32 files changed, 1137 insertions, 925 deletions
diff --git a/win/Makefile.in b/win/Makefile.in
index 392bd7a..fd80010 100644
--- a/win/Makefile.in
+++ b/win/Makefile.in
@@ -82,6 +82,11 @@ CFLAGS_OPTIMIZE	= @CFLAGS_OPTIMIZE@
 #CFLAGS = 		$(CFLAGS_DEBUG) $(CFLAGS_OPTIMIZE)
 CFLAGS = 		@CFLAGS@ @CFLAGS_DEFAULT@ -DUNICODE -D_UNICODE
 
+# To compile without backward compatibility and deprecated code uncomment the
+# following
+NO_DEPRECATED_FLAGS	=
+#NO_DEPRECATED_FLAGS	= -DTCL_NO_DEPRECATED
+
 # To enable compilation debugging reverse the comment characters on one of the
 # following lines.
 COMPILE_DEBUG_FLAGS =
@@ -90,7 +95,7 @@ COMPILE_DEBUG_FLAGS =
 
 SRC_DIR			= @srcdir@
 ROOT_DIR		= @srcdir@/..
-TOP_DIR			= $(shell cd @srcdir@/..; pwd)
+TOP_DIR			= $(shell cd @srcdir@/..; pwd -P)
 GENERIC_DIR		= $(TOP_DIR)/generic
 TOMMATH_DIR		= $(TOP_DIR)/libtommath
 WIN_DIR			= $(TOP_DIR)/win
@@ -112,7 +117,7 @@ ROOT_DIR_NATIVE		= $(shell $(CYGPATH) '$(ROOT_DIR)' | sed 's!\\!/!g')
 
 # Fully qualify library path so that `make test`
 # does not depend on the current directory.
-LIBRARY_DIR1		= $(shell cd '$(ROOT_DIR_NATIVE)/library' ; pwd)
+LIBRARY_DIR1		= $(shell cd '$(ROOT_DIR_NATIVE)/library' ; pwd -P)
 LIBRARY_DIR             = $(shell $(CYGPATH) '$(LIBRARY_DIR1)' | sed 's!\\!/!g')
 DLLSUFFIX		= @DLLSUFFIX@
 LIBSUFFIX		= @LIBSUFFIX@
@@ -187,7 +192,7 @@ COPY		= cp
 CC_SWITCHES = ${CFLAGS} ${CFLAGS_WARNING} ${TCL_SHLIB_CFLAGS} -I"${ZLIB_DIR}" \
 -I"${GENERIC_DIR_NATIVE}" -DTCL_TOMMATH -DMP_PREC=4 -I"${TOMMATH_DIR_NATIVE}" \
 -I"${WIN_DIR_NATIVE}" ${AC_FLAGS} \
-${COMPILE_DEBUG_FLAGS}
+${COMPILE_DEBUG_FLAGS} ${NO_DEPRECATED_FLAGS}
 
 CC_OBJNAME = @CC_OBJNAME@
 CC_EXENAME = @CC_EXENAME@
@@ -220,6 +225,7 @@ GENERIC_OBJS = \
 	tclCmdIL.$(OBJEXT) \
 	tclCmdMZ.$(OBJEXT) \
 	tclCompCmds.$(OBJEXT) \
+	tclCompCmdsGR.$(OBJEXT) \
 	tclCompCmdsSZ.$(OBJEXT) \
 	tclCompExpr.$(OBJEXT) \
 	tclCompile.$(OBJEXT) \
@@ -261,6 +267,7 @@ GENERIC_OBJS = \
 	tclOOMethod.$(OBJEXT) \
 	tclOOStubInit.$(OBJEXT) \
 	tclObj.$(OBJEXT) \
+	tclOptimize.$(OBJEXT) \
 	tclPanic.$(OBJEXT) \
 	tclParse.$(OBJEXT) \
 	tclPathObj.$(OBJEXT) \
@@ -426,7 +433,7 @@ $(CAT32): cat32.$(OBJEXT)
 
 ${TCL_STUB_LIB_FILE}: ${STUB_OBJS}
 	@$(RM) ${TCL_STUB_LIB_FILE}
-	@MAKE_LIB@ ${STUB_OBJS}
+	@MAKE_STUB_LIB@ ${STUB_OBJS}
 	@POST_MAKE_LIB@
 
 ${TCL_DLL_FILE}: ${TCL_OBJS} tcl.$(RES) @ZLIB_DLL_FILE@
@@ -439,25 +446,19 @@ ${TCL_LIB_FILE}: ${TCL_OBJS} ${DDE_OBJS} ${REG_OBJS}
 	@MAKE_LIB@ ${TCL_OBJS} ${DDE_OBJS} ${REG_OBJS}
 	@POST_MAKE_LIB@
 
-# assume GNU make
-
-# To enable concurrent parallel make of tcl<x>.dll and tcl<x>.lib, the tcl<x>.dll
-# targets have to depend on tcl<x>.lib, this ensures that linking of tcl<x>.dll
-# does not execute concurrently with the renaming and recompiling of tcl<x>.lib
-
-${DDE_DLL_FILE}: ${DDE_OBJS} ${TCL_STUB_LIB_FILE}
+${DDE_DLL_FILE}: ${TCL_STUB_LIB_FILE} ${DDE_OBJS}
 	@MAKE_DLL@ ${DDE_OBJS} $(TCL_STUB_LIB_FILE) $(SHLIB_LD_LIBS)
 
-${REG_DLL_FILE}: ${REG_OBJS} ${TCL_STUB_LIB_FILE}
+${REG_DLL_FILE}: ${TCL_STUB_LIB_FILE} ${REG_OBJS}
 	@MAKE_DLL@ ${REG_OBJS} $(TCL_STUB_LIB_FILE) $(SHLIB_LD_LIBS)
 
-${TEST_DLL_FILE}: ${TCLTEST_OBJS} ${TCL_STUB_LIB_FILE}
+${TEST_DLL_FILE}: ${TCL_STUB_LIB_FILE} ${TCLTEST_OBJS}
 	@$(RM) ${TEST_DLL_FILE} ${TEST_LIB_FILE}
 	@MAKE_DLL@ ${TCLTEST_OBJS} $(TCL_STUB_LIB_FILE) $(SHLIB_LD_LIBS)
 
 # use pre-built zlib1.dll
 ${ZLIB_DLL_FILE}: ${TCL_STUB_LIB_FILE}
-	@if test "@ZLIB_LIBS@set" == "${ZLIB_DIR}/win64/zdll.libset" ; then \
+	@if test "@ZLIB_LIBS@set" != "${ZLIB_DIR}/win32/zdll.libset" ; then \
 		$(COPY) $(ZLIB_DIR)/win64/${ZLIB_DLL_FILE} ${ZLIB_DLL_FILE}; \
 	else \
 		$(COPY) $(ZLIB_DIR)/win32/${ZLIB_DLL_FILE} ${ZLIB_DLL_FILE}; \
@@ -544,9 +545,9 @@ gendate:
 # run (and the results checked) after updating to a new release of libtommath.
 
 gentommath_h:
-	$(TCL_EXE) "$(ROOT_DIR_NATIVE)\tools\fix_tommath_h.tcl" \
-		"$(TOMMATH_DIR_NATIVE)\tommath.h" \
-		> "$(GENERIC_DIR_NATIVE)\tclTomMath.h"
+	$(TCL_EXE) "$(ROOT_DIR_NATIVE)/tools/fix_tommath_h.tcl" \
+		"$(TOMMATH_DIR_NATIVE)/tommath.h" \
+		> "$(GENERIC_DIR_NATIVE)/tclTomMath.h"
 
 install: all install-binaries install-libraries install-doc install-packages
 
@@ -583,23 +584,23 @@ install-binaries: binaries
 	    fi; \
 	    done
 	@if [ -f $(DDE_DLL_FILE) ]; then \
-	    echo installing $(DDE_DLL_FILE); \
+	    echo Installing $(DDE_DLL_FILE); \
 	    $(COPY) $(DDE_DLL_FILE) $(LIB_INSTALL_DIR)/dde${DDEDOTVER}; \
 	    $(COPY) $(ROOT_DIR)/library/dde/pkgIndex.tcl \
 		$(LIB_INSTALL_DIR)/dde${DDEDOTVER}; \
 	    fi
 	@if [ -f $(DDE_LIB_FILE) ]; then \
-	    echo installing $(DDE_LIB_FILE); \
+	    echo Installing $(DDE_LIB_FILE); \
 	    $(COPY) $(DDE_LIB_FILE) $(LIB_INSTALL_DIR)/dde${DDEDOTVER}; \
 	    fi
 	@if [ -f $(REG_DLL_FILE) ]; then \
-	    echo installing $(REG_DLL_FILE); \
+	    echo Installing $(REG_DLL_FILE); \
 	    $(COPY) $(REG_DLL_FILE) $(LIB_INSTALL_DIR)/reg${REGDOTVER}; \
 	    $(COPY) $(ROOT_DIR)/library/reg/pkgIndex.tcl \
 		$(LIB_INSTALL_DIR)/reg${REGDOTVER}; \
 	    fi
 	@if [ -f $(REG_LIB_FILE) ]; then \
-	    echo installing $(REG_LIB_FILE); \
+	    echo Installing $(REG_LIB_FILE); \
 	    $(COPY) $(REG_LIB_FILE) $(LIB_INSTALL_DIR)/reg${REGDOTVER}; \
 	    fi
 
@@ -640,19 +641,19 @@ install-libraries: libraries install-tzdata install-msgs
 	    do \
 	    $(COPY) "$$j" "$(SCRIPT_INSTALL_DIR)/http1.0"; \
 	    done;
-	@echo "Installing package http 2.8.4 as a Tcl Module";
-	@$(COPY) $(ROOT_DIR)/library/http/http.tcl $(SCRIPT_INSTALL_DIR)/../tcl8/8.6/http-2.8.4.tm;
+	@echo "Installing package http 2.8.8 as a Tcl Module";
+	@$(COPY) $(ROOT_DIR)/library/http/http.tcl $(SCRIPT_INSTALL_DIR)/../tcl8/8.6/http-2.8.8.tm;
 	@echo "Installing library opt0.4 directory";
 	@for j in $(ROOT_DIR)/library/opt/*.tcl; \
 	    do \
 	    $(COPY) "$$j" "$(SCRIPT_INSTALL_DIR)/opt0.4"; \
 	    done;
-	@echo "Installing package msgcat 1.4.5 as a Tcl Module";
-	@$(COPY) $(ROOT_DIR)/library/msgcat/msgcat.tcl $(SCRIPT_INSTALL_DIR)/../tcl8/8.5/msgcat-1.4.5.tm;
-	@echo "Installing package tcltest 2.3.4 as a Tcl Module";
-	@$(COPY) $(ROOT_DIR)/library/tcltest/tcltest.tcl $(SCRIPT_INSTALL_DIR)/../tcl8/8.5/tcltest-2.3.4.tm;
-	@echo "Installing package platform 1.0.10 as a Tcl Module";
-	@$(COPY) $(ROOT_DIR)/library/platform/platform.tcl $(SCRIPT_INSTALL_DIR)/../tcl8/8.4/platform-1.0.10.tm;
+	@echo "Installing package msgcat 1.5.2 as a Tcl Module";
+	@$(COPY) $(ROOT_DIR)/library/msgcat/msgcat.tcl $(SCRIPT_INSTALL_DIR)/../tcl8/8.5/msgcat-1.5.2.tm;
+	@echo "Installing package tcltest 2.3.7 as a Tcl Module";
+	@$(COPY) $(ROOT_DIR)/library/tcltest/tcltest.tcl $(SCRIPT_INSTALL_DIR)/../tcl8/8.5/tcltest-2.3.7.tm;
+	@echo "Installing package platform 1.0.12 as a Tcl Module";
+	@$(COPY) $(ROOT_DIR)/library/platform/platform.tcl $(SCRIPT_INSTALL_DIR)/../tcl8/8.4/platform-1.0.12.tm;
 	@echo "Installing package platform::shell 1.1.4 as a Tcl Module";
 	@$(COPY) $(ROOT_DIR)/library/platform/shell.tcl $(SCRIPT_INSTALL_DIR)/../tcl8/8.4/platform/shell-1.1.4.tm;
 	@echo "Installing encodings";
@@ -701,14 +702,14 @@ test-tcl: binaries $(TCLSH) $(CAT32) $(TEST_DLL_FILE)
 	TCL_LIBRARY="$(LIBRARY_DIR)"; export TCL_LIBRARY; \
 	./$(TCLSH) "$(ROOT_DIR_NATIVE)/tests/all.tcl" $(TESTFLAGS) \
 	-load "package ifneeded Tcltest ${VERSION}@TCL_PATCH_LEVEL@ [list load [file normalize ${TEST_DLL_FILE}] Tcltest]; \
-	package ifneeded dde 1.4.0b1 [list load [file normalize ${DDE_DLL_FILE}] dde]; \
+	package ifneeded dde 1.4.0 [list load [file normalize ${DDE_DLL_FILE}] dde]; \
 	package ifneeded registry 1.3.0 [list load [file normalize ${REG_DLL_FILE}] registry]" | ./$(CAT32)
 
 # Useful target to launch a built tclsh with the proper path,...
 runtest: binaries $(TCLSH) $(TEST_DLL_FILE)
 	@TCL_LIBRARY="$(LIBRARY_DIR)"; export TCL_LIBRARY; \
 	./$(TCLSH) $(TESTFLAGS) -load "package ifneeded Tcltest ${VERSION}@TCL_PATCH_LEVEL@ [list load [file normalize ${TEST_DLL_FILE}] Tcltest]; \
-	package ifneeded dde 1.4.0b1 [list load [file normalize ${DDE_DLL_FILE}] dde]; \
+	package ifneeded dde 1.4.0 [list load [file normalize ${DDE_DLL_FILE}] dde]; \
 	package ifneeded registry 1.3.0 [list load [file normalize ${REG_DLL_FILE}] registry]" $(SCRIPT)
 
 # This target can be used to run tclsh from the build directory via
@@ -748,7 +749,7 @@ PKG_CFG_ARGS		= @PKG_CFG_ARGS@
 PKG_DIR			= ./pkgs
 
 packages:
-	@builddir=`pwd`; \
+	@builddir=`pwd -P`; \
 	for i in $(PKGS_DIR)/*; do \
 	  if [ -d $$i ] ; then \
 	    if [ -x $$i/configure ] ; then \
@@ -756,8 +757,8 @@ packages:
 	      mkdir -p $(PKG_DIR)/$$pkg; \
 	      if [ ! -f $(PKG_DIR)/$$pkg/Makefile ]; then \
 	        ( cd $(PKG_DIR)/$$pkg; \
-	          echo "Configuring package '$$i' wd = `pwd`"; \
-	          $$i/configure --with-tcl=$(PWD) --with-tclinclude=$(GENERIC_DIR) $(PKG_CFG_ARGS) --enable-shared --enable-threads; ) \
+	          echo "Configuring package '$$i' wd = `pwd -P`"; \
+	          $$i/configure --with-tcl=$$builddir --with-tclinclude=$(GENERIC_DIR) $(PKG_CFG_ARGS) --enable-shared --enable-threads; ) \
 	      fi ; \
 	      echo "Building package '$$pkg'"; \
 	      ( cd $(PKG_DIR)/$$pkg; $(MAKE); ) \
@@ -767,7 +768,7 @@ packages:
 	cd $$builddir
 
 install-packages: packages
-	@builddir=`pwd`; \
+	@builddir=`pwd -P`; \
 	for i in $(PKGS_DIR)/*; do \
 	  if [ -d $$i ]; then \
 	    pkg=`basename $$i`; \
@@ -780,20 +781,20 @@ install-packages: packages
 	cd $$builddir
 
 test-packages: tcltest packages
-	@builddir=`pwd`; \
+	@builddir=`pwd -P`; \
 	for i in $(PKGS_DIR)/*; do \
 	  if [ -d $$i ]; then \
 	    pkg=`basename $$i`; \
 	    if [ -f $(PKG_DIR)/$$pkg/Makefile ]; then \
 	        echo "Testing package '$$pkg'"; \
-	        ( cd $(PKG_DIR)/$$pkg; $(MAKE) "LD_LIBRARY_PATH=$$builddir:${LD_LIBRARY_PATH}" "TCL_LIBRARY=${TCL_BUILDTIME_LIBRARY}" "TCLLIBPATH=$$builddir/pkgs" test "TCLSH_PROG=$$builddir/tcltest"; ) \
+	        ( cd $(PKG_DIR)/$$pkg; $(MAKE) "LD_LIBRARY_PATH=$$builddir:${LD_LIBRARY_PATH}" "TCL_LIBRARY=${TCL_BUILDTIME_LIBRARY}" "TCLLIBPATH=$$builddir/pkgs" test "TCLSH_PROG=$$builddir/${TCLSH}"; ) \
 	    fi; \
 	  fi; \
 	done; \
 	cd $$builddir
 
 clean-packages:
-	@builddir=`pwd`; \
+	@builddir=`pwd -P`; \
 	for i in $(PKGS_DIR)/*; do \
 	  if [ -d $$i ]; then \
 	    pkg=`basename $$i`; \
@@ -805,7 +806,7 @@ clean-packages:
 	cd $$builddir
 
 distclean-packages:
-	@builddir=`pwd`; \
+	@builddir=`pwd -P`; \
 	for i in $(PKGS_DIR)/*; do \
 	  if [ -d $$i ]; then \
 	    pkg=`basename $$i`; \
diff --git a/win/README b/win/README
index 8b257b1..1a2d501 100644
--- a/win/README
+++ b/win/README
@@ -91,9 +91,9 @@ Note: Tcl no longer provides support for Win32s.
 This distribution contains an extensive test suite for Tcl.  Some of the
 tests are timing dependent and will fail from time to time.  If a test is
 failing consistently, please send us a bug report with as much detail as
-you can manage.  Please use the online database at
+you can manage to our tracker:
 
-	http://tcl.sourceforge.net/
+	http://core.tcl.tk/tcl/reportlist
 
 In order to run the test suite, you build the "test" target using the
 appropriate makefile for your compiler.
diff --git a/win/buildall.vc.bat b/win/buildall.vc.bat
index e4f0a30..e4f0a30 100755..100644
--- a/win/buildall.vc.bat
+++ b/win/buildall.vc.bat
diff --git a/win/configure b/win/configure
index 5cf1513..2affd38 100755
--- a/win/configure
+++ b/win/configure
@@ -309,7 +309,7 @@ ac_includes_default="\
 # include <unistd.h>
 #endif"
 
-ac_subst_vars='SHELL PATH_SEPARATOR PACKAGE_NAME PACKAGE_TARNAME PACKAGE_VERSION PACKAGE_STRING PACKAGE_BUGREPORT exec_prefix prefix program_transform_name bindir sbindir libexecdir datadir sysconfdir sharedstatedir localstatedir libdir includedir oldincludedir infodir mandir build_alias host_alias target_alias DEFS ECHO_C ECHO_N ECHO_T LIBS CC CFLAGS LDFLAGS CPPFLAGS ac_ct_CC EXEEXT OBJEXT CPP EGREP AR ac_ct_AR RANLIB ac_ct_RANLIB RC ac_ct_RC SET_MAKE TCL_THREADS CYGPATH CELIB_DIR DL_LIBS CFLAGS_DEBUG CFLAGS_OPTIMIZE CFLAGS_WARNING ZLIB_DLL_FILE ZLIB_LIBS ZLIB_OBJS CFLAGS_DEFAULT LDFLAGS_DEFAULT VC_MANIFEST_EMBED_DLL VC_MANIFEST_EMBED_EXE TCL_VERSION TCL_MAJOR_VERSION TCL_MINOR_VERSION TCL_PATCH_LEVEL PKG_CFG_ARGS TCL_EXE TCL_LIB_FILE TCL_LIB_FLAG TCL_STATIC_LIB_FILE TCL_STATIC_LIB_FLAG TCL_IMPORT_LIB_FILE TCL_IMPORT_LIB_FLAG TCL_LIB_SPEC TCL_STUB_LIB_FILE TCL_STUB_LIB_FLAG TCL_STUB_LIB_SPEC TCL_STUB_LIB_PATH TCL_INCLUDE_SPEC TCL_BUILD_STUB_LIB_SPEC TCL_BUILD_STUB_LIB_PATH TCL_DLL_FILE TCL_SRC_DIR TCL_BIN_DIR TCL_DBGX CFG_TCL_SHARED_LIB_SUFFIX CFG_TCL_UNSHARED_LIB_SUFFIX CFG_TCL_EXPORT_FILE_SUFFIX EXTRA_CFLAGS DEPARG CC_OBJNAME CC_EXENAME LDFLAGS_DEBUG LDFLAGS_OPTIMIZE LDFLAGS_CONSOLE LDFLAGS_WINDOW STLIB_LD SHLIB_LD SHLIB_LD_LIBS SHLIB_CFLAGS SHLIB_SUFFIX TCL_SHARED_BUILD LIBS_GUI DLLSUFFIX LIBPREFIX LIBSUFFIX EXESUFFIX LIBRARIES MAKE_LIB POST_MAKE_LIB MAKE_DLL MAKE_EXE TCL_BUILD_LIB_SPEC TCL_LD_SEARCH_FLAGS TCL_NEEDS_EXP_FILE TCL_BUILD_EXP_FILE TCL_EXP_FILE TCL_LIB_VERSIONS_OK TCL_PACKAGE_PATH TCL_DDE_VERSION TCL_DDE_MAJOR_VERSION TCL_DDE_MINOR_VERSION TCL_REG_VERSION TCL_REG_MAJOR_VERSION TCL_REG_MINOR_VERSION RC_OUT RC_TYPE RC_INCLUDE RC_DEFINE RC_DEFINES RES LIBOBJS LTLIBOBJS'
+ac_subst_vars='SHELL PATH_SEPARATOR PACKAGE_NAME PACKAGE_TARNAME PACKAGE_VERSION PACKAGE_STRING PACKAGE_BUGREPORT exec_prefix prefix program_transform_name bindir sbindir libexecdir datadir sysconfdir sharedstatedir localstatedir libdir includedir oldincludedir infodir mandir build_alias host_alias target_alias DEFS ECHO_C ECHO_N ECHO_T LIBS CC CFLAGS LDFLAGS CPPFLAGS ac_ct_CC EXEEXT OBJEXT CPP EGREP AR ac_ct_AR RANLIB ac_ct_RANLIB RC ac_ct_RC SET_MAKE TCL_THREADS CYGPATH CELIB_DIR DL_LIBS CFLAGS_DEBUG CFLAGS_OPTIMIZE CFLAGS_WARNING ZLIB_DLL_FILE ZLIB_LIBS ZLIB_OBJS CFLAGS_DEFAULT LDFLAGS_DEFAULT VC_MANIFEST_EMBED_DLL VC_MANIFEST_EMBED_EXE TCL_WIN_VERSION MACHINE TCL_VERSION TCL_MAJOR_VERSION TCL_MINOR_VERSION TCL_PATCH_LEVEL PKG_CFG_ARGS TCL_EXE TCL_LIB_FILE TCL_LIB_FLAG TCL_STATIC_LIB_FILE TCL_STATIC_LIB_FLAG TCL_IMPORT_LIB_FILE TCL_IMPORT_LIB_FLAG TCL_LIB_SPEC TCL_STUB_LIB_FILE TCL_STUB_LIB_FLAG TCL_STUB_LIB_SPEC TCL_STUB_LIB_PATH TCL_INCLUDE_SPEC TCL_BUILD_STUB_LIB_SPEC TCL_BUILD_STUB_LIB_PATH TCL_DLL_FILE TCL_SRC_DIR TCL_BIN_DIR TCL_DBGX CFG_TCL_SHARED_LIB_SUFFIX CFG_TCL_UNSHARED_LIB_SUFFIX CFG_TCL_EXPORT_FILE_SUFFIX EXTRA_CFLAGS DEPARG CC_OBJNAME CC_EXENAME LDFLAGS_DEBUG LDFLAGS_OPTIMIZE LDFLAGS_CONSOLE LDFLAGS_WINDOW STLIB_LD SHLIB_LD SHLIB_LD_LIBS SHLIB_CFLAGS SHLIB_SUFFIX TCL_SHARED_BUILD LIBS_GUI DLLSUFFIX LIBPREFIX LIBSUFFIX EXESUFFIX LIBRARIES MAKE_LIB MAKE_STUB_LIB POST_MAKE_LIB MAKE_DLL MAKE_EXE TCL_BUILD_LIB_SPEC TCL_LD_SEARCH_FLAGS TCL_NEEDS_EXP_FILE TCL_BUILD_EXP_FILE TCL_EXP_FILE TCL_LIB_VERSIONS_OK TCL_PACKAGE_PATH TCL_DDE_VERSION TCL_DDE_MAJOR_VERSION TCL_DDE_MINOR_VERSION TCL_REG_VERSION TCL_REG_MAJOR_VERSION TCL_REG_MINOR_VERSION RC_OUT RC_TYPE RC_INCLUDE RC_DEFINE RC_DEFINES RES LIBOBJS LTLIBOBJS'
 ac_subst_files=''
 
 # Initialize some variables set by options.
@@ -1311,7 +1311,7 @@ SHELL=/bin/sh
 TCL_VERSION=8.6
 TCL_MAJOR_VERSION=8
 TCL_MINOR_VERSION=6
-TCL_PATCH_LEVEL="b2"
+TCL_PATCH_LEVEL=".1"
 VER=$TCL_MAJOR_VERSION$TCL_MINOR_VERSION
 
 TCL_DDE_VERSION=1.4
@@ -3146,7 +3146,8 @@ echo "${ECHO_T}shared" >&6
 	echo "$as_me:$LINENO: result: static" >&5
 echo "${ECHO_T}static" >&6
 	SHARED_BUILD=0
-	cat >>confdefs.h <<\_ACEOF
+
+cat >>confdefs.h <<\_ACEOF
 #define STATIC_BUILD 1
 _ACEOF
 
@@ -3339,7 +3340,7 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 
-	    #ifndef __WIN32__
+	    #ifndef _WIN32
 		#error cross-compiler
 	    #endif
 
@@ -3448,6 +3449,8 @@ echo "${ECHO_T}yes" >&6
     # set various compiler flags depending on whether we are using gcc or cl
 
     if test "${GCC}" = "yes" ; then
+	extra_cflags="-pipe"
+	extra_ldflags="-pipe -static-libgcc"
 	echo "$as_me:$LINENO: checking for mingw32 version of gcc" >&5
 echo $ECHO_N "checking for mingw32 version of gcc... $ECHO_C" >&6
 if test "${ac_cv_win32+set}" = set; then
@@ -3460,7 +3463,7 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 
-		#ifdef __WIN32__
+		#ifdef _WIN32
 		    #error win32
 		#endif
 
@@ -3594,13 +3597,11 @@ echo $ECHO_N "checking compiler flags... $ECHO_C" >&6
 	RC_DEFINE=--define
 	RES=res.o
 	MAKE_LIB="\${STLIB_LD} \$@"
+	MAKE_STUB_LIB="\${STLIB_LD} \$@"
 	POST_MAKE_LIB="\${RANLIB} \$@"
 	MAKE_EXE="\${CC} -o \$@"
 	LIBPREFIX="lib"
 
-	extra_cflags="$extra_cflags -pipe"
-	extra_ldflags="$extra_ldflags -pipe"
-
 	if test "${SHARED_BUILD}" = "0" ; then
 	    # static
             echo "$as_me:$LINENO: result: using static flags" >&5
@@ -3629,9 +3630,8 @@ echo "$as_me: error: ${CC} does not support the -shared option.
 	    LIBRARIES="\${SHARED_LIBRARIES}"
 	fi
 	# Link with gcc since ld does not link to default libs like
-	# -luser32 and -lmsvcrt by default. Make sure CFLAGS is
-	# included so -mno-cygwin passed the correct libs to the linker.
-	SHLIB_LD='${CC} -shared ${CFLAGS}'
+	# -luser32 and -lmsvcrt by default.
+	SHLIB_LD='${CC} -shared'
 	SHLIB_LD_LIBS='${LIBS}'
 	MAKE_DLL="\${SHLIB_LD} \$(LDFLAGS) -o \$@ ${extra_ldflags} \
 	    -Wl,--out-implib,\$(patsubst %.dll,lib%.a,\$@)"
@@ -4003,6 +4003,7 @@ _ACEOF
 	RC_DEFINE=-d
 	RES=res
 	MAKE_LIB="\${STLIB_LD} -out:\$@"
+	MAKE_STUB_LIB="\${STLIB_LD} -nodefaultlib -out:\$@"
 	POST_MAKE_LIB=
 	MAKE_EXE="\${CC} -Fe\$@"
 	LIBPREFIX=""
@@ -4344,12 +4345,6 @@ esac
 #	as we just assume that the platform hasn't got a usable z.lib
 #------------------------------------------------------------------------
 
-if test "$do64bit" = "yes" && test "$GCC" != "yes"; then
-
-  tcl_ok=no
-
-else
-
 if test "${enable_shared+set}" = "set"; then
 
   enableval="$enable_shared"
@@ -4361,16 +4356,23 @@ else
 
 fi
 
-
-fi
-
 if test "$tcl_ok" = "yes"; then
 
   ZLIB_DLL_FILE=\${ZLIB_DLL_FILE}
 
   if test "$do64bit" = "yes"; then
 
-    ZLIB_LIBS=\${ZLIB_DIR}/win64/zdll.lib
+    if test "$GCC" == "yes"; then
+
+      ZLIB_LIBS=\${ZLIB_DIR}/win64/libz.dll.a
+
+
+else
+
+      ZLIB_LIBS=\${ZLIB_DIR}/win64/zdll.lib
+
+
+fi
 
 
 else
@@ -4385,10 +4387,6 @@ else
 
   ZLIB_OBJS=\${ZLIB_OBJS}
 
-  cat >>confdefs.h <<_ACEOF
-#define NO_VIZ 1
-_ACEOF
-
 
 fi
 
@@ -5170,6 +5168,19 @@ else
     TCL_PACKAGE_PATH="${prefix}/lib"
 fi
 
+# The tclsh.exe.manifest requires these
+# TCL_WIN_VERSION is the 4 dotted pair Windows version format which needs
+# the release level, and must account for interim release versioning
+case "$TCL_PATCH_LEVEL" in
+     *a*) TCL_RELEASE_LEVEL=0 ;;
+     *b*) TCL_RELEASE_LEVEL=1 ;;
+     *)   TCL_RELEASE_LEVEL=2 ;;
+esac
+TCL_WIN_VERSION="$TCL_VERSION.$TCL_RELEASE_LEVEL.`echo $TCL_PATCH_LEVEL | tr -d ab.`"
+
+# X86|AMD64|IA64 for manifest
+
+
 
 
 
@@ -5237,6 +5248,7 @@ fi
 
 
 
+
 # empty on win, but needs sub'ing
 
 
@@ -5263,7 +5275,7 @@ fi
 
 
 
-                              ac_config_files="$ac_config_files Makefile tclConfig.sh tcl.hpj"
+                                        ac_config_files="$ac_config_files Makefile tclConfig.sh tcl.hpj tclsh.exe.manifest"
 cat >confcache <<\_ACEOF
 # This file is a shell script that caches the results of configure
 # tests run on this system so they can be shared between configure
@@ -5817,6 +5829,7 @@ do
   "Makefile" ) CONFIG_FILES="$CONFIG_FILES Makefile" ;;
   "tclConfig.sh" ) CONFIG_FILES="$CONFIG_FILES tclConfig.sh" ;;
   "tcl.hpj" ) CONFIG_FILES="$CONFIG_FILES tcl.hpj" ;;
+  "tclsh.exe.manifest" ) CONFIG_FILES="$CONFIG_FILES tclsh.exe.manifest" ;;
   *) { { echo "$as_me:$LINENO: error: invalid argument: $ac_config_target" >&5
 echo "$as_me: error: invalid argument: $ac_config_target" >&2;}
    { (exit 1); exit 1; }; };;
@@ -5930,6 +5943,8 @@ s,@CFLAGS_DEFAULT@,$CFLAGS_DEFAULT,;t t
 s,@LDFLAGS_DEFAULT@,$LDFLAGS_DEFAULT,;t t
 s,@VC_MANIFEST_EMBED_DLL@,$VC_MANIFEST_EMBED_DLL,;t t
 s,@VC_MANIFEST_EMBED_EXE@,$VC_MANIFEST_EMBED_EXE,;t t
+s,@TCL_WIN_VERSION@,$TCL_WIN_VERSION,;t t
+s,@MACHINE@,$MACHINE,;t t
 s,@TCL_VERSION@,$TCL_VERSION,;t t
 s,@TCL_MAJOR_VERSION@,$TCL_MAJOR_VERSION,;t t
 s,@TCL_MINOR_VERSION@,$TCL_MINOR_VERSION,;t t
@@ -5978,6 +5993,7 @@ s,@LIBSUFFIX@,$LIBSUFFIX,;t t
 s,@EXESUFFIX@,$EXESUFFIX,;t t
 s,@LIBRARIES@,$LIBRARIES,;t t
 s,@MAKE_LIB@,$MAKE_LIB,;t t
+s,@MAKE_STUB_LIB@,$MAKE_STUB_LIB,;t t
 s,@POST_MAKE_LIB@,$POST_MAKE_LIB,;t t
 s,@MAKE_DLL@,$MAKE_DLL,;t t
 s,@MAKE_EXE@,$MAKE_EXE,;t t
diff --git a/win/configure.in b/win/configure.in
index de56bf7..77e0327 100644
--- a/win/configure.in
+++ b/win/configure.in
@@ -14,7 +14,7 @@ SHELL=/bin/sh
 TCL_VERSION=8.6
 TCL_MAJOR_VERSION=8
 TCL_MINOR_VERSION=6
-TCL_PATCH_LEVEL="b2"
+TCL_PATCH_LEVEL=".1"
 VER=$TCL_MAJOR_VERSION$TCL_MINOR_VERSION
 
 TCL_DDE_VERSION=1.4
@@ -120,26 +120,25 @@ esac
 #	as we just assume that the platform hasn't got a usable z.lib
 #------------------------------------------------------------------------
 
-AS_IF([test "$do64bit" = "yes" && test "$GCC" != "yes"], [
-  tcl_ok=no
-], [
 AS_IF([test "${enable_shared+set}" = "set"], [
   enableval="$enable_shared"
   tcl_ok=$enableval
 ], [
   tcl_ok=yes
 ])
-])
 AS_IF([test "$tcl_ok" = "yes"], [
   AC_SUBST(ZLIB_DLL_FILE,[\${ZLIB_DLL_FILE}])
   AS_IF([test "$do64bit" = "yes"], [
-    AC_SUBST(ZLIB_LIBS,[\${ZLIB_DIR}/win64/zdll.lib])
+    AS_IF([test "$GCC" == "yes"],[
+      AC_SUBST(ZLIB_LIBS,[\${ZLIB_DIR}/win64/libz.dll.a])
+    ], [
+      AC_SUBST(ZLIB_LIBS,[\${ZLIB_DIR}/win64/zdll.lib])
+    ])
   ], [
     AC_SUBST(ZLIB_LIBS,[\${ZLIB_DIR}/win32/zdll.lib])
   ])
 ], [
   AC_SUBST(ZLIB_OBJS,[\${ZLIB_OBJS}])
-  AC_DEFINE_UNQUOTED(NO_VIZ, 1)
 ])
 AC_DEFINE(HAVE_ZLIB, 1, [Is there an installed zlib?])
 
@@ -351,6 +350,19 @@ else
     TCL_PACKAGE_PATH="${prefix}/lib"
 fi
 
+# The tclsh.exe.manifest requires these
+# TCL_WIN_VERSION is the 4 dotted pair Windows version format which needs
+# the release level, and must account for interim release versioning
+case "$TCL_PATCH_LEVEL" in
+     *a*) TCL_RELEASE_LEVEL=0 ;;
+     *b*) TCL_RELEASE_LEVEL=1 ;;
+     *)   TCL_RELEASE_LEVEL=2 ;;
+esac
+TCL_WIN_VERSION="$TCL_VERSION.$TCL_RELEASE_LEVEL.`echo $TCL_PATCH_LEVEL | tr -d ab.`"
+AC_SUBST(TCL_WIN_VERSION)
+# X86|AMD64|IA64 for manifest
+AC_SUBST(MACHINE)
+
 AC_SUBST(TCL_VERSION)
 AC_SUBST(TCL_MAJOR_VERSION)
 AC_SUBST(TCL_MINOR_VERSION)
@@ -414,6 +426,7 @@ AC_SUBST(LIBSUFFIX)
 AC_SUBST(EXESUFFIX)
 AC_SUBST(LIBRARIES)
 AC_SUBST(MAKE_LIB)
+AC_SUBST(MAKE_STUB_LIB)
 AC_SUBST(POST_MAKE_LIB)
 AC_SUBST(MAKE_DLL)
 AC_SUBST(MAKE_EXE)
@@ -444,7 +457,7 @@ AC_SUBST(RC_DEFINE)
 AC_SUBST(RC_DEFINES)
 AC_SUBST(RES)
 
-AC_OUTPUT(Makefile tclConfig.sh tcl.hpj)
+AC_OUTPUT(Makefile tclConfig.sh tcl.hpj tclsh.exe.manifest)
 
 dnl Local Variables:
 dnl mode: autoconf;
diff --git a/win/makefile.bc b/win/makefile.bc
index d17c624..a962bc6 100644
--- a/win/makefile.bc
+++ b/win/makefile.bc
@@ -200,6 +200,7 @@ TCLOBJS	= \
 	$(TMPDIR)\tclCmdIL.obj \
 	$(TMPDIR)\tclCmdMZ.obj \
 	$(TMPDIR)\tclCompCmds.obj \
+	$(TMPDIR)\tclCompCmdsGR.obj \
 	$(TMPDIR)\tclCompCmdsSZ.obj \
 	$(TMPDIR)\tclCompExpr.obj \
 	$(TMPDIR)\tclCompile.obj \
@@ -238,6 +239,7 @@ TCLOBJS	= \
 	$(TMPDIR)\tclOOMethod.obj \
 	$(TMPDIR)\tclOOStubInit.obj \
 	$(TMPDIR)\tclObj.obj \
+	$(TMPDIR)\tclOptimize.obj \
 	$(TMPDIR)\tclPanic.obj \
 	$(TMPDIR)\tclParse.obj \
 	$(TMPDIR)\tclPipe.obj \
@@ -407,57 +409,57 @@ $(CAT32): $(WINDIR)\cat.c
 install-binaries: $(TCLSH)
 	$(MKDIR) "$(BIN_INSTALL_DIR)"
 	$(MKDIR) "$(LIB_INSTALL_DIR)"
-	@echo installing $(TCLDLLNAME)
+	@echo Installing $(TCLDLLNAME)
 	@copy "$(TCLDLL)" "$(BIN_INSTALL_DIR)"
 	@copy "$(TCLLIB)" "$(LIB_INSTALL_DIR)"
-	@echo installing "$(TCLSH)"
+	@echo Installing "$(TCLSH)"
 	@copy "$(TCLSH)" "$(BIN_INSTALL_DIR)"
-	@echo installing $(TCLSTUBLIBNAME)
+	@echo Installing $(TCLSTUBLIBNAME)
 	@copy "$(TCLSTUBLIB)" "$(LIB_INSTALL_DIR)"
-	@echo installing $(WINDIR)\tclooConfig.sh
+	@echo Installing $(WINDIR)\tclooConfig.sh
 	@copy "$(WINDIR)\tclooConfig.sh" "$(LIB_INSTALL_DIR)"
 
 install-libraries:
 	-@$(MKDIR) "$(LIB_INSTALL_DIR)"
 	-@$(MKDIR) "$(INCLUDE_INSTALL_DIR)"
 	-@$(MKDIR) "$(SCRIPT_INSTALL_DIR)"
-	@echo installing http1.0
+	@echo Installing http1.0
 	-@$(MKDIR) "$(SCRIPT_INSTALL_DIR)\http1.0"
 	-@copy "$(ROOT)\library\http1.0\http.tcl"     "$(SCRIPT_INSTALL_DIR)\http1.0"
 	-@copy "$(ROOT)\library\http1.0\pkgIndex.tcl" "$(SCRIPT_INSTALL_DIR)\http1.0"
-	@echo installing http2.8
+	@echo Installing http2.8
 	-@$(MKDIR) "$(SCRIPT_INSTALL_DIR)\http2.8"
 	-@copy "$(ROOT)\library\http\http.tcl"     "$(SCRIPT_INSTALL_DIR)\http2.8"
 	-@copy "$(ROOT)\library\http\pkgIndex.tcl" "$(SCRIPT_INSTALL_DIR)\http2.8"
-	@echo installing opt0.4
+	@echo Installing opt0.4
 	-@$(MKDIR) "$(SCRIPT_INSTALL_DIR)\opt0.4"
 	-@copy "$(ROOT)\library\opt\optparse.tcl" "$(SCRIPT_INSTALL_DIR)\opt0.4"
 	-@copy "$(ROOT)\library\opt\pkgIndex.tcl" "$(SCRIPT_INSTALL_DIR)\opt0.4"
-	@echo installing msgcat1.4
-	-@$(MKDIR) "$(SCRIPT_INSTALL_DIR)\msgcat1.4"
-	-@copy "$(ROOT)\library\msgcat\msgcat.tcl"   "$(SCRIPT_INSTALL_DIR)\msgcat1.4"
-	-@copy "$(ROOT)\library\msgcat\pkgIndex.tcl" "$(SCRIPT_INSTALL_DIR)\msgcat1.4"
-	@echo installing tcltest2.3
+	@echo Installing msgcat1.5
+	-@$(MKDIR) "$(SCRIPT_INSTALL_DIR)\msgcat1.5"
+	-@copy "$(ROOT)\library\msgcat\msgcat.tcl"   "$(SCRIPT_INSTALL_DIR)\msgcat1.5"
+	-@copy "$(ROOT)\library\msgcat\pkgIndex.tcl" "$(SCRIPT_INSTALL_DIR)\msgcat1.5"
+	@echo Installing tcltest2.3
 	-@$(MKDIR) "$(SCRIPT_INSTALL_DIR)\tcltest2.3"
 	-@copy "$(ROOT)\library\tcltest\tcltest.tcl"   "$(SCRIPT_INSTALL_DIR)\tcltest2.3"
 	-@copy "$(ROOT)\library\tcltest\pkgIndex.tcl" "$(SCRIPT_INSTALL_DIR)\tcltest2.3"
-	@echo installing platform1.0
+	@echo Installing platform1.0
 	-@$(MKDIR) "$(SCRIPT_INSTALL_DIR)\platform1.0"
 	-@copy "$(ROOT)\library\platform\platform.tcl" "$(SCRIPT_INSTALL_DIR)\platform1.0"
 	-@copy "$(ROOT)\library\platform\shell.tcl"    "$(SCRIPT_INSTALL_DIR)\platform1.0"
 	-@copy "$(ROOT)\library\platform\pkgIndex.tcl" "$(SCRIPT_INSTALL_DIR)\platform1.0"
-	@echo installing $(TCLDDEDLLNAME)
+	@echo Installing $(TCLDDEDLLNAME)
 	-@$(MKDIR) "$(SCRIPT_INSTALL_DIR)\dde1.3"
 	-@copy "$(TCLDDEDLL)" "$(SCRIPT_INSTALL_DIR)\dde1.3"
 	-@copy "$(ROOT)\library\dde\pkgIndex.tcl" "$(SCRIPT_INSTALL_DIR)\dde1.3"
-	@echo installing $(TCLREGDLLNAME)
+	@echo Installing $(TCLREGDLLNAME)
 	-@$(MKDIR) "$(SCRIPT_INSTALL_DIR)\reg1.2"
 	-@copy "$(TCLREGDLL)" "$(SCRIPT_INSTALL_DIR)\reg1.3"
 	-@copy "$(ROOT)\library\reg\pkgIndex.tcl" "$(SCRIPT_INSTALL_DIR)\reg1.2"
-	@echo installing encoding files
+	@echo Installing encoding files
 	-@$(MKDIR) "$(SCRIPT_INSTALL_DIR)\encoding"
 	-@copy "$(ROOT)\library\encoding\*.enc" "$(SCRIPT_INSTALL_DIR)\encoding"
-	@echo installing library files
+	@echo Installing library files
 	-@copy "$(GENERICDIR)\tcl.h"         "$(INCLUDE_INSTALL_DIR)"
 	-@copy "$(GENERICDIR)\tclDecls.h"    "$(INCLUDE_INSTALL_DIR)"
 	-@copy "$(GENERICDIR)\tclOO.h"       "$(INCLUDE_INSTALL_DIR)"
diff --git a/win/makefile.vc b/win/makefile.vc
index ba5b710..e5f6c9b 100644
--- a/win/makefile.vc
+++ b/win/makefile.vc
@@ -274,6 +274,7 @@ COREOBJS = \
 	$(TMP_DIR)\tclCmdIL.obj \
 	$(TMP_DIR)\tclCmdMZ.obj \
 	$(TMP_DIR)\tclCompCmds.obj \
+	$(TMP_DIR)\tclCompCmdsGR.obj \
 	$(TMP_DIR)\tclCompCmdsSZ.obj \
 	$(TMP_DIR)\tclCompExpr.obj \
 	$(TMP_DIR)\tclCompile.obj \
@@ -315,6 +316,7 @@ COREOBJS = \
 	$(TMP_DIR)\tclOOMethod.obj \
 	$(TMP_DIR)\tclOOStubInit.obj \
 	$(TMP_DIR)\tclObj.obj \
+	$(TMP_DIR)\tclOptimize.obj \
 	$(TMP_DIR)\tclPanic.obj \
 	$(TMP_DIR)\tclParse.obj \
 	$(TMP_DIR)\tclPathObj.obj \
@@ -578,13 +580,13 @@ test-core: setup $(TCLTEST) dlls $(CAT32)
 	set TCL_LIBRARY=$(ROOT:\=/)/library
 !if "$(OS)" == "Windows_NT"  || "$(MSVCDIR)" == "IDE"
 	$(DEBUGGER) $(TCLTEST) "$(ROOT:\=/)/tests/all.tcl" $(TESTFLAGS) -loadfile <<
-		package ifneeded dde 1.4.0b1 [list load "$(TCLDDELIB:\=/)" dde]
+		package ifneeded dde 1.4.0 [list load "$(TCLDDELIB:\=/)" dde]
 		package ifneeded registry 1.3.0 [list load "$(TCLREGLIB:\=/)" registry]
 <<
 !else
 	@echo Please wait while the tests are collected...
 	$(TCLTEST) "$(ROOT:\=/)/tests/all.tcl" $(TESTFLAGS) -loadfile << > tests.log
-		package ifneeded dde 1.4.0b1 "$(TCLDDELIB:\=/)" dde]
+		package ifneeded dde 1.4.0 "$(TCLDDELIB:\=/)" dde]
 		package ifneeded registry 1.3.0 "$(TCLREGLIB:\=/)" registry]
 <<
 	type tests.log | more
@@ -620,7 +622,7 @@ $**
 !endif
 
 $(TCLSTUBLIB): $(TCLSTUBOBJS)
-	$(lib32) -nologo $(LINKERFLAGS) -out:$@ $(TCLSTUBOBJS)
+	$(lib32) -nologo $(LINKERFLAGS) -nodefaultlib -out:$@ $(TCLSTUBOBJS)
 
 $(TCLSH): $(TCLSHOBJS) $(TCLSTUBLIB) $(TCLIMPLIB)
 	$(link32) $(conlflags) -stack:2300000 -out:$@ $(baselibs) $**
@@ -983,6 +985,12 @@ $(TMP_DIR)\tclTomMathStubLib.obj: $(GENERICDIR)\tclTomMathStubLib.c
 $(TMP_DIR)\tclOOStubLib.obj: $(GENERICDIR)\tclOOStubLib.c
 	$(cc32) $(STUB_CFLAGS) -Zl -DSTATIC_BUILD $(TCL_INCLUDES) -Fo$@ $?
 
+$(TMP_DIR)\tclsh.exe.manifest: $(WINDIR)\tclsh.exe.manifest.in
+	@nmakehlp -s << $** >$@
+@MACHINE@	  $(MACHINE:IX86=X86)
+@TCL_WIN_VERSION@  $(DOTVERSION).0.0
+<<
+
 #---------------------------------------------------------------------
 # Generate the source dependencies.  Having dependency rules will
 # improve incremental build accuracy without having to resort to a
@@ -1049,12 +1057,14 @@ $<
 <<
 
 {$(WINDIR)}.rc{$(TMP_DIR)}.res:
-	$(rc32) -fo $@ -r -i "$(GENERICDIR)" \
+	$(rc32) -fo $@ -r -i "$(GENERICDIR)" -i "$(TMP_DIR)" \
 	    -d DEBUG=$(DEBUG) -d UNCHECKED=$(UNCHECKED) \
 	    -d TCL_THREADS=$(TCL_THREADS) \
 	    -d STATIC_BUILD=$(STATIC_BUILD) \
 	    $<
 
+$(TMP_DIR)\tclsh.res: $(TMP_DIR)\tclsh.exe.manifest
+
 .SUFFIXES:
 .SUFFIXES:.c .rc
 
diff --git a/win/nmakehlp.c b/win/nmakehlp.c
index 2868857..b1a1517 100644
--- a/win/nmakehlp.c
+++ b/win/nmakehlp.c
@@ -47,7 +47,7 @@ static int CheckForLinkerFeature(const char *option);
 static int IsIn(const char *string, const char *substring);
 static int SubstituteFile(const char *substs, const char *filename);
 static int QualifyPath(const char *path);
-static const char *GetVersionFromFile(const char *filename, const char *match);
+static const char *GetVersionFromFile(const char *filename, const char *match, int numdots);
 static DWORD WINAPI ReadFromPipe(LPVOID args);
 
 /* globals */
@@ -153,7 +153,7 @@ main(
 		    &dwWritten, NULL);
 		return 0;
 	    }
-	    printf("%s\n", GetVersionFromFile(argv[2], argv[3]));
+	    printf("%s\n", GetVersionFromFile(argv[2], argv[3], *(argv[1]+2) - '0'));
 	    return 0;
 	case 'Q':
 	    if (argc != 3) {
@@ -479,7 +479,8 @@ IsIn(
 static const char *
 GetVersionFromFile(
     const char *filename,
-    const char *match)
+    const char *match,
+    int numdots)
 {
     size_t cbBuffer = 100;
     static char szBuffer[100];
@@ -497,9 +498,10 @@ GetVersionFromFile(
 	    p = strstr(szBuffer, match);
 	    if (p != NULL) {
 		/*
-		 * Skip to first digit.
+		 * Skip to first digit after the match.
 		 */
 
+		p += strlen(match);
 		while (*p && !isdigit(*p)) {
 		    ++p;
 		}
@@ -509,7 +511,8 @@ GetVersionFromFile(
 		 */
 
 		q = p;
-		while (*q && (isalnum(*q) || *q == '.')) {
+		while (*q && (strchr("0123456789.ab", *q)) && ((!strchr(".ab", *q)
+			    && (!strchr("ab", q[-1])) || --numdots))) {
 		    ++q;
 		}
 
@@ -628,11 +631,11 @@ SubstituteFile(
 	    }
 	}
 #endif
-	
+
 	/*
 	 * Run the substitutions over each line of the input
 	 */
-	
+
 	while (fgets(szBuffer, cbBuffer, fp) != NULL) {
 	    list_item_t *p = NULL;
 	    for (p = substPtr; p != NULL; p = p->nextPtr) {
@@ -652,7 +655,7 @@ SubstituteFile(
 	    }
 	    printf(szBuffer);
 	}
-	
+
 	list_free(&substPtr);
     }
     fclose(fp);
diff --git a/win/tcl.m4 b/win/tcl.m4
index 5e8e135..d12ae10 100644
--- a/win/tcl.m4
+++ b/win/tcl.m4
@@ -3,50 +3,124 @@
 #
 #	Locate the tclConfig.sh file and perform a sanity check on
 #	the Tcl compile flags
-#	Currently a no-op for Windows
 #
 # Arguments:
-#	PATCH_LEVEL	The patch level for Tcl if any.
+#	none
 #
 # Results:
 #
 #	Adds the following arguments to configure:
 #		--with-tcl=...
 #
-#	Sets the following vars:
-#		TCL_BIN_DIR	Full path to the tclConfig.sh file
+#	Defines the following vars:
+#		TCL_BIN_DIR	Full path to the directory containing
+#				the tclConfig.sh file
 #------------------------------------------------------------------------
 
 AC_DEFUN([SC_PATH_TCLCONFIG], [
-    AC_MSG_CHECKING([the location of tclConfig.sh])
+    #
+    # Ok, lets find the tcl configuration
+    # First, look for one uninstalled.
+    # the alternative search directory is invoked by --with-tcl
+    #
 
-    if test -d ../../tcl8.6$1/win;  then
-	TCL_BIN_DIR_DEFAULT=../../tcl8.6$1/win
-    elif test -d ../../tcl8.6/win;  then
-	TCL_BIN_DIR_DEFAULT=../../tcl8.6/win
-    else
-	TCL_BIN_DIR_DEFAULT=../../tcl/win
-    fi
+    if test x"${no_tcl}" = x ; then
+	# we reset no_tcl in case something fails here
+	no_tcl=true
+	AC_ARG_WITH(tcl,
+	    AC_HELP_STRING([--with-tcl],
+		[directory containing tcl configuration (tclConfig.sh)]),
+	    with_tclconfig="${withval}")
+	AC_MSG_CHECKING([for Tcl configuration])
+	AC_CACHE_VAL(ac_cv_c_tclconfig,[
+
+	    # First check to see if --with-tcl was specified.
+	    if test x"${with_tclconfig}" != x ; then
+		case "${with_tclconfig}" in
+		    */tclConfig.sh )
+			if test -f "${with_tclconfig}"; then
+			    AC_MSG_WARN([--with-tcl argument should refer to directory containing tclConfig.sh, not to tclConfig.sh itself])
+			    with_tclconfig="`echo "${with_tclconfig}" | sed 's!/tclConfig\.sh$!!'`"
+			fi ;;
+		esac
+		if test -f "${with_tclconfig}/tclConfig.sh" ; then
+		    ac_cv_c_tclconfig="`(cd "${with_tclconfig}"; pwd)`"
+		else
+		    AC_MSG_ERROR([${with_tclconfig} directory doesn't contain tclConfig.sh])
+		fi
+	    fi
 
-    AC_ARG_WITH(tcl, [  --with-tcl=DIR          use Tcl 8.6 binaries from DIR],
-	    TCL_BIN_DIR=$withval, TCL_BIN_DIR=`cd $TCL_BIN_DIR_DEFAULT; pwd`)
-    if test ! -d $TCL_BIN_DIR; then
-	AC_MSG_ERROR(Tcl directory $TCL_BIN_DIR does not exist)
-    fi
-    if test ! -f $TCL_BIN_DIR/tclConfig.sh; then
-	if test ! -f $TCL_BIN_DIR/../unix/tclConfig.sh; then
-	    AC_MSG_ERROR(There is no tclConfig.sh in $TCL_BIN_DIR:  perhaps you did not specify the Tcl *build* directory (not the toplevel Tcl directory) or you forgot to configure Tcl?)
+	    # then check for a private Tcl installation
+	    if test x"${ac_cv_c_tclconfig}" = x ; then
+		for i in \
+			../tcl \
+			`ls -dr ../tcl[[8-9]].[[0-9]].[[0-9]]* 2>/dev/null` \
+			`ls -dr ../tcl[[8-9]].[[0-9]] 2>/dev/null` \
+			`ls -dr ../tcl[[8-9]].[[0-9]]* 2>/dev/null` \
+			../../tcl \
+			`ls -dr ../../tcl[[8-9]].[[0-9]].[[0-9]]* 2>/dev/null` \
+			`ls -dr ../../tcl[[8-9]].[[0-9]] 2>/dev/null` \
+			`ls -dr ../../tcl[[8-9]].[[0-9]]* 2>/dev/null` \
+			../../../tcl \
+			`ls -dr ../../../tcl[[8-9]].[[0-9]].[[0-9]]* 2>/dev/null` \
+			`ls -dr ../../../tcl[[8-9]].[[0-9]] 2>/dev/null` \
+			`ls -dr ../../../tcl[[8-9]].[[0-9]]* 2>/dev/null` ; do
+		    if test -f "$i/win/tclConfig.sh" ; then
+			ac_cv_c_tclconfig="`(cd $i/win; pwd)`"
+			break
+		    fi
+		done
+	    fi
+
+	    # check in a few common install locations
+	    if test x"${ac_cv_c_tclconfig}" = x ; then
+		for i in `ls -d ${libdir} 2>/dev/null` \
+			`ls -d ${exec_prefix}/lib 2>/dev/null` \
+			`ls -d ${prefix}/lib 2>/dev/null` \
+			`ls -d /cygdrive/c/Tcl/lib 2>/dev/null` \
+			`ls -d /cygdrive/c/Progra~1/Tcl/lib 2>/dev/null` \
+			`ls -d /c/Tcl/lib 2>/dev/null` \
+			`ls -d /c/Progra~1/Tcl/lib 2>/dev/null` \
+			`ls -d C:/Tcl/lib 2>/dev/null` \
+			`ls -d C:/Progra~1/Tcl/lib 2>/dev/null` \
+			; do
+		    if test -f "$i/tclConfig.sh" ; then
+			ac_cv_c_tclconfig="`(cd $i; pwd)`"
+			break
+		    fi
+		done
+	    fi
+
+	    # check in a few other private locations
+	    if test x"${ac_cv_c_tclconfig}" = x ; then
+		for i in \
+			${srcdir}/../tcl \
+			`ls -dr ${srcdir}/../tcl[[8-9]].[[0-9]].[[0-9]]* 2>/dev/null` \
+			`ls -dr ${srcdir}/../tcl[[8-9]].[[0-9]] 2>/dev/null` \
+			`ls -dr ${srcdir}/../tcl[[8-9]].[[0-9]]* 2>/dev/null` ; do
+		    if test -f "$i/win/tclConfig.sh" ; then
+		    ac_cv_c_tclconfig="`(cd $i/win; pwd)`"
+		    break
+		fi
+		done
+	    fi
+	])
+
+	if test x"${ac_cv_c_tclconfig}" = x ; then
+	    TCL_BIN_DIR="# no Tcl configs found"
+	    AC_MSG_ERROR([Can't find Tcl configuration definitions. Use --with-tcl to specify a directory containing tclConfig.sh])
+	else
+	    no_tcl=
+	    TCL_BIN_DIR="${ac_cv_c_tclconfig}"
+	    AC_MSG_RESULT([found ${TCL_BIN_DIR}/tclConfig.sh])
 	fi
-	TCL_BIN_DIR=`cd ${TCL_BIN_DIR}/../unix; pwd`
     fi
-    AC_MSG_RESULT($TCL_BIN_DIR/tclConfig.sh)
 ])
 
 #------------------------------------------------------------------------
 # SC_PATH_TKCONFIG --
 #
 #	Locate the tkConfig.sh file
-#	Currently a no-op for Windows
 #
 # Arguments:
 #	none
@@ -56,31 +130,109 @@ AC_DEFUN([SC_PATH_TCLCONFIG], [
 #	Adds the following arguments to configure:
 #		--with-tk=...
 #
-#	Sets the following vars:
-#		TK_BIN_DIR	Full path to the tkConfig.sh file
+#	Defines the following vars:
+#		TK_BIN_DIR	Full path to the directory containing
+#				the tkConfig.sh file
 #------------------------------------------------------------------------
 
 AC_DEFUN([SC_PATH_TKCONFIG], [
-    AC_MSG_CHECKING([the location of tkConfig.sh])
+    #
+    # Ok, lets find the tk configuration
+    # First, look for one uninstalled.
+    # the alternative search directory is invoked by --with-tk
+    #
 
-    if test -d ../../tk8.6$1/win;  then
-	TK_BIN_DIR_DEFAULT=../../tk8.6$1/win
-    elif test -d ../../tk8.6/win;  then
-	TK_BIN_DIR_DEFAULT=../../tk8.6/win
-    else
-	TK_BIN_DIR_DEFAULT=../../tk/win
-    fi
+    if test x"${no_tk}" = x ; then
+	# we reset no_tk in case something fails here
+	no_tk=true
+	AC_ARG_WITH(tk,
+	    AC_HELP_STRING([--with-tk],
+		[directory containing tk configuration (tkConfig.sh)]),
+	    with_tkconfig="${withval}")
+	AC_MSG_CHECKING([for Tk configuration])
+	AC_CACHE_VAL(ac_cv_c_tkconfig,[
+
+	    # First check to see if --with-tkconfig was specified.
+	    if test x"${with_tkconfig}" != x ; then
+		case "${with_tkconfig}" in
+		    */tkConfig.sh )
+			if test -f "${with_tkconfig}"; then
+			    AC_MSG_WARN([--with-tk argument should refer to directory containing tkConfig.sh, not to tkConfig.sh itself])
+			    with_tkconfig="`echo "${with_tkconfig}" | sed 's!/tkConfig\.sh$!!'`"
+			fi ;;
+		esac
+		if test -f "${with_tkconfig}/tkConfig.sh" ; then
+		    ac_cv_c_tkconfig="`(cd "${with_tkconfig}"; pwd)`"
+		else
+		    AC_MSG_ERROR([${with_tkconfig} directory doesn't contain tkConfig.sh])
+		fi
+	    fi
 
-    AC_ARG_WITH(tk, [  --with-tk=DIR          use Tk 8.6 binaries from DIR],
-	    TK_BIN_DIR=$withval, TK_BIN_DIR=`cd $TK_BIN_DIR_DEFAULT; pwd`)
-    if test ! -d $TK_BIN_DIR; then
-	AC_MSG_ERROR(Tk directory $TK_BIN_DIR does not exist)
-    fi
-    if test ! -f $TK_BIN_DIR/tkConfig.sh; then
-	AC_MSG_ERROR(There is no tkConfig.sh in $TK_BIN_DIR:  perhaps you did not specify the Tk *build* directory (not the toplevel Tk directory) or you forgot to configure Tk?)
-    fi
+	    # then check for a private Tk library
+	    if test x"${ac_cv_c_tkconfig}" = x ; then
+		for i in \
+			../tk \
+			`ls -dr ../tk[[8-9]].[[0-9]].[[0-9]]* 2>/dev/null` \
+			`ls -dr ../tk[[8-9]].[[0-9]] 2>/dev/null` \
+			`ls -dr ../tk[[8-9]].[[0-9]]* 2>/dev/null` \
+			../../tk \
+			`ls -dr ../../tk[[8-9]].[[0-9]].[[0-9]]* 2>/dev/null` \
+			`ls -dr ../../tk[[8-9]].[[0-9]] 2>/dev/null` \
+			`ls -dr ../../tk[[8-9]].[[0-9]]* 2>/dev/null` \
+			../../../tk \
+			`ls -dr ../../../tk[[8-9]].[[0-9]].[[0-9]]* 2>/dev/null` \
+			`ls -dr ../../../tk[[8-9]].[[0-9]] 2>/dev/null` \
+			`ls -dr ../../../tk[[8-9]].[[0-9]]* 2>/dev/null` ; do
+		    if test -f "$i/win/tkConfig.sh" ; then
+			ac_cv_c_tkconfig="`(cd $i/win; pwd)`"
+			break
+		    fi
+		done
+	    fi
 
-    AC_MSG_RESULT([$TK_BIN_DIR/tkConfig.sh])
+	    # check in a few common install locations
+	    if test x"${ac_cv_c_tkconfig}" = x ; then
+		for i in `ls -d ${libdir} 2>/dev/null` \
+			`ls -d ${exec_prefix}/lib 2>/dev/null` \
+			`ls -d ${prefix}/lib 2>/dev/null` \
+			`ls -d /cygdrive/c/Tcl/lib 2>/dev/null` \
+			`ls -d /cygdrive/c/Progra~1/Tcl/lib 2>/dev/null` \
+			`ls -d /c/Tcl/lib 2>/dev/null` \
+			`ls -d /c/Progra~1/Tcl/lib 2>/dev/null` \
+			`ls -d C:/Tcl/lib 2>/dev/null` \
+			`ls -d C:/Progra~1/Tcl/lib 2>/dev/null` \
+			; do
+		    if test -f "$i/tkConfig.sh" ; then
+			ac_cv_c_tkconfig="`(cd $i; pwd)`"
+			break
+		    fi
+		done
+	    fi
+
+	    # check in a few other private locations
+	    if test x"${ac_cv_c_tkconfig}" = x ; then
+		for i in \
+			${srcdir}/../tk \
+			`ls -dr ${srcdir}/../tk[[8-9]].[[0-9]].[[0-9]]* 2>/dev/null` \
+			`ls -dr ${srcdir}/../tk[[8-9]].[[0-9]] 2>/dev/null` \
+			`ls -dr ${srcdir}/../tk[[8-9]].[[0-9]]* 2>/dev/null` ; do
+		    if test -f "$i/win/tkConfig.sh" ; then
+			ac_cv_c_tkconfig="`(cd $i/win; pwd)`"
+			break
+		    fi
+		done
+	    fi
+	])
+
+	if test x"${ac_cv_c_tkconfig}" = x ; then
+	    TK_BIN_DIR="# no Tk configs found"
+	    AC_MSG_ERROR([Can't find Tk configuration definitions. Use --with-tk to specify a directory containing tkConfig.sh])
+	else
+	    no_tk=
+	    TK_BIN_DIR="${ac_cv_c_tkconfig}"
+	    AC_MSG_RESULT([found ${TK_BIN_DIR}/tkConfig.sh])
+	fi
+    fi
 ])
 
 #------------------------------------------------------------------------
@@ -95,7 +247,7 @@ AC_DEFUN([SC_PATH_TKCONFIG], [
 #
 # Results:
 #
-#	Subst the following vars:
+#	Substitutes the following vars:
 #		TCL_BIN_DIR
 #		TCL_SRC_DIR
 #		TCL_LIB_FILE
@@ -103,13 +255,13 @@ AC_DEFUN([SC_PATH_TKCONFIG], [
 #------------------------------------------------------------------------
 
 AC_DEFUN([SC_LOAD_TCLCONFIG], [
-    AC_MSG_CHECKING([for existence of $TCL_BIN_DIR/tclConfig.sh])
+    AC_MSG_CHECKING([for existence of ${TCL_BIN_DIR}/tclConfig.sh])
 
-    if test -f "$TCL_BIN_DIR/tclConfig.sh" ; then
+    if test -f "${TCL_BIN_DIR}/tclConfig.sh" ; then
         AC_MSG_RESULT([loading])
-	. $TCL_BIN_DIR/tclConfig.sh
+	. "${TCL_BIN_DIR}/tclConfig.sh"
     else
-        AC_MSG_RESULT([file not found])
+        AC_MSG_RESULT([could not find ${TCL_BIN_DIR}/tclConfig.sh])
     fi
 
     #
@@ -158,7 +310,6 @@ AC_DEFUN([SC_LOAD_TCLCONFIG], [
 # SC_LOAD_TKCONFIG --
 #
 #	Load the tkConfig.sh file
-#	Currently a no-op for Windows
 #
 # Arguments:
 #
@@ -172,13 +323,13 @@ AC_DEFUN([SC_LOAD_TCLCONFIG], [
 #------------------------------------------------------------------------
 
 AC_DEFUN([SC_LOAD_TKCONFIG], [
-    AC_MSG_CHECKING([for existence of $TK_BIN_DIR/tkConfig.sh])
+    AC_MSG_CHECKING([for existence of ${TK_BIN_DIR}/tkConfig.sh])
 
-    if test -f "$TK_BIN_DIR/tkConfig.sh" ; then
+    if test -f "${TK_BIN_DIR}/tkConfig.sh" ; then
         AC_MSG_RESULT([loading])
-	. $TK_BIN_DIR/tkConfig.sh
+	. "${TK_BIN_DIR}/tkConfig.sh"
     else
-        AC_MSG_RESULT([could not find $TK_BIN_DIR/tkConfig.sh])
+        AC_MSG_RESULT([could not find ${TK_BIN_DIR}/tkConfig.sh])
     fi
 
 
@@ -212,7 +363,7 @@ AC_DEFUN([SC_ENABLE_SHARED], [
     AC_MSG_CHECKING([how to build libraries])
     AC_ARG_ENABLE(shared,
 	[  --enable-shared         build and link with shared libraries (default: on)],
-    [tcl_ok=$enableval], [tcl_ok=yes])
+	[tcl_ok=$enableval], [tcl_ok=yes])
 
     if test "${enable_shared+set}" = set; then
 	enableval="$enable_shared"
@@ -227,7 +378,7 @@ AC_DEFUN([SC_ENABLE_SHARED], [
     else
 	AC_MSG_RESULT([static])
 	SHARED_BUILD=0
-	AC_DEFINE(STATIC_BUILD)
+	AC_DEFINE(STATIC_BUILD, 1, [Is this a static build?])
     fi
 ])
 
@@ -270,7 +421,7 @@ AC_DEFUN([SC_ENABLE_THREADS], [
 #------------------------------------------------------------------------
 # SC_ENABLE_SYMBOLS --
 #
-#	Specify if debugging symbols should be used
+#	Specify if debugging symbols should be used.
 #	Memory (TCL_MEM_DEBUG) and compile (TCL_COMPILE_DEBUG) debugging
 #	can also be enabled.
 #
@@ -372,6 +523,7 @@ AC_DEFUN([SC_ENABLE_SYMBOLS], [
 #		RES
 #
 #		MAKE_LIB
+#		MAKE_STUB_LIB
 #		MAKE_EXE
 #		MAKE_DLL
 #
@@ -420,7 +572,7 @@ AC_DEFUN([SC_CONFIG_CFLAGS], [
       AC_CACHE_CHECK(for cross-compile version of gcc,
 	ac_cv_cross,
 	AC_TRY_COMPILE([
-	    #ifndef __WIN32__
+	    #ifndef _WIN32
 		#error cross-compiler
 	    #endif
 	], [],
@@ -482,10 +634,12 @@ AC_DEFUN([SC_CONFIG_CFLAGS], [
     # set various compiler flags depending on whether we are using gcc or cl
 
     if test "${GCC}" = "yes" ; then
+	extra_cflags="-pipe"
+	extra_ldflags="-pipe -static-libgcc"
 	AC_CACHE_CHECK(for mingw32 version of gcc,
 	    ac_cv_win32,
 	    AC_TRY_COMPILE([
-		#ifdef __WIN32__
+		#ifdef _WIN32
 		    #error win32
 		#endif
 	    ], [],
@@ -529,13 +683,11 @@ AC_DEFUN([SC_CONFIG_CFLAGS], [
 	RC_DEFINE=--define
 	RES=res.o
 	MAKE_LIB="\${STLIB_LD} \[$]@"
+	MAKE_STUB_LIB="\${STLIB_LD} \[$]@"
 	POST_MAKE_LIB="\${RANLIB} \[$]@"
 	MAKE_EXE="\${CC} -o \[$]@"
 	LIBPREFIX="lib"
 
-	extra_cflags="$extra_cflags -pipe"
-	extra_ldflags="$extra_ldflags -pipe"
-
 	if test "${SHARED_BUILD}" = "0" ; then
 	    # static
             AC_MSG_RESULT([using static flags])
@@ -559,9 +711,8 @@ AC_DEFUN([SC_CONFIG_CFLAGS], [
 	    LIBRARIES="\${SHARED_LIBRARIES}"
 	fi
 	# Link with gcc since ld does not link to default libs like
-	# -luser32 and -lmsvcrt by default. Make sure CFLAGS is
-	# included so -mno-cygwin passed the correct libs to the linker.
-	SHLIB_LD='${CC} -shared ${CFLAGS}'
+	# -luser32 and -lmsvcrt by default.
+	SHLIB_LD='${CC} -shared'
 	SHLIB_LD_LIBS='${LIBS}'
 	MAKE_DLL="\${SHLIB_LD} \$(LDFLAGS) -o \[$]@ ${extra_ldflags} \
 	    -Wl,--out-implib,\$(patsubst %.dll,lib%.a,\[$]@)"
@@ -810,6 +961,7 @@ AC_DEFUN([SC_CONFIG_CFLAGS], [
 	RC_DEFINE=-d
 	RES=res
 	MAKE_LIB="\${STLIB_LD} -out:\[$]@"
+	MAKE_STUB_LIB="\${STLIB_LD} -nodefaultlib -out:\[$]@"
 	POST_MAKE_LIB=
 	MAKE_EXE="\${CC} -Fe\[$]@"
 	LIBPREFIX=""
diff --git a/win/tclAppInit.c b/win/tclAppInit.c
index d6da500..a6c1a67 100644
--- a/win/tclAppInit.c
+++ b/win/tclAppInit.c
@@ -3,7 +3,8 @@
  *
  *	Provides a default version of the main program and Tcl_AppInit
  *	procedure for tclsh and other Tcl-based applications (without Tk).
- *	Note that this program must be built in Win32 console mode to work properly.
+ *	Note that this program must be built in Win32 console mode to work
+ *	properly.
  *
  * Copyright (c) 1993 The Regents of the University of California.
  * Copyright (c) 1994-1997 Sun Microsystems, Inc.
@@ -33,19 +34,23 @@ extern Tcl_PackageInitProc Dde_SafeInit;
 #endif
 
 #ifdef TCL_BROKEN_MAINARGS
+int _CRT_glob = 0;
 static void setargv(int *argcPtr, TCHAR ***argvPtr);
-#endif
+#endif /* TCL_BROKEN_MAINARGS */
 
 /*
  * The following #if block allows you to change the AppInit function by using
  * a #define of TCL_LOCAL_APPINIT instead of rewriting this entire file. The
- * #if checks for that #define and uses Tcl_AppInit if it doesn't exist.
+ * #if checks for that #define and uses Tcl_AppInit if it does not exist.
  */
 
 #ifndef TCL_LOCAL_APPINIT
 #define TCL_LOCAL_APPINIT Tcl_AppInit
 #endif
-extern int TCL_LOCAL_APPINIT(Tcl_Interp *interp);
+#ifndef MODULE_SCOPE
+#   define MODULE_SCOPE extern
+#endif
+MODULE_SCOPE int TCL_LOCAL_APPINIT(Tcl_Interp *);
 
 /*
  * The following #if block allows you to change how Tcl finds the startup
@@ -54,7 +59,7 @@ extern int TCL_LOCAL_APPINIT(Tcl_Interp *interp);
  */
 
 #ifdef TCL_LOCAL_MAIN_HOOK
-extern int TCL_LOCAL_MAIN_HOOK(int *argc, TCHAR ***argv);
+MODULE_SCOPE int TCL_LOCAL_MAIN_HOOK(int *argc, TCHAR ***argv);
 #endif
 
 /*
@@ -77,15 +82,15 @@ extern int TCL_LOCAL_MAIN_HOOK(int *argc, TCHAR ***argv);
 #ifdef TCL_BROKEN_MAINARGS
 int
 main(
-    int argc,
-    char *dummy[])
+    int argc,			/* Number of command-line arguments. */
+    char *dummy[])		/* Not used. */
 {
     TCHAR **argv;
 #else
 int
 _tmain(
-    int argc,
-    TCHAR *argv[])
+    int argc,			/* Number of command-line arguments. */
+    TCHAR *argv[])		/* Values of command-line arguments. */
 {
 #endif
     TCHAR *p;
@@ -99,7 +104,7 @@ _tmain(
 
 #ifdef TCL_BROKEN_MAINARGS
     /*
-     * Get our args from the c-runtime. Ignore lpszCmdLine.
+     * Get our args from the c-runtime. Ignore command line.
      */
 
     setargv(&argc, &argv);
@@ -109,9 +114,9 @@ _tmain(
      * Forward slashes substituted for backslashes.
      */
 
-    for (p = argv[0]; *p != TEXT('\0'); p++) {
-	if (*p == TEXT('\\')) {
-	    *p = TEXT('/');
+    for (p = argv[0]; *p != '\0'; p++) {
+	if (*p == '\\') {
+	    *p = '/';
 	}
     }
 
@@ -189,11 +194,12 @@ Tcl_AppInit(
     /*
      * Specify a user-specific startup file to invoke if the application is
      * run interactively. Typically the startup file is "~/.apprc" where "app"
-     * is the name of the application. If this line is deleted then no user-
-     * specific startup file will be run under any conditions.
+     * is the name of the application. If this line is deleted then no
+     * user-specific startup file will be run under any conditions.
      */
 
-    (Tcl_SetVar)(interp, "tcl_rcFileName", "~/tclshrc.tcl", TCL_GLOBAL_ONLY);
+    (Tcl_ObjSetVar2)(interp, Tcl_NewStringObj("tcl_rcFileName", -1), NULL,
+	    Tcl_NewStringObj("~/tclshrc.tcl", -1), TCL_GLOBAL_ONLY);
     return TCL_OK;
 }
 
@@ -242,13 +248,13 @@ setargv(
      */
 
     size = 2;
-    for (p = cmdLine; *p != TEXT('\0'); p++) {
-	if ((*p == TEXT(' ')) || (*p == TEXT('\t'))) {	/* INTL: ISO space. */
+    for (p = cmdLine; *p != '\0'; p++) {
+	if ((*p == ' ') || (*p == '\t')) {	/* INTL: ISO space. */
 	    size++;
-	    while ((*p == TEXT(' ')) || (*p == TEXT('\t'))) { /* INTL: ISO space. */
+	    while ((*p == ' ') || (*p == '\t')) { /* INTL: ISO space. */
 		p++;
 	    }
-	    if (*p == TEXT('\0')) {
+	    if (*p == '\0') {
 		break;
 	    }
 	}
@@ -267,10 +273,10 @@ setargv(
     p = cmdLine;
     for (argc = 0; argc < size; argc++) {
 	argv[argc] = arg = argSpace;
-	while ((*p == TEXT(' ')) || (*p == TEXT('\t'))) {	/* INTL: ISO space. */
+	while ((*p == ' ') || (*p == '\t')) {	/* INTL: ISO space. */
 	    p++;
 	}
-	if (*p == TEXT('\0')) {
+	if (*p == '\0') {
 	    break;
 	}
 
@@ -278,14 +284,14 @@ setargv(
 	slashes = 0;
 	while (1) {
 	    copy = 1;
-	    while (*p == TEXT('\\')) {
+	    while (*p == '\\') {
 		slashes++;
 		p++;
 	    }
-	    if (*p == TEXT('"')) {
+	    if (*p == '"') {
 		if ((slashes & 1) == 0) {
 		    copy = 0;
-		    if ((inquote) && (p[1] == TEXT('"'))) {
+		    if ((inquote) && (p[1] == '"')) {
 			p++;
 			copy = 1;
 		    } else {
@@ -296,13 +302,13 @@ setargv(
 	    }
 
 	    while (slashes) {
-		*arg = TEXT('\\');
+		*arg = '\\';
 		arg++;
 		slashes--;
 	    }
 
-	    if ((*p == TEXT('\0')) || (!inquote &&
-		    ((*p == TEXT(' ')) || (*p == TEXT('\t'))))) {	/* INTL: ISO space. */
+	    if ((*p == '\0') || (!inquote &&
+		    ((*p == ' ') || (*p == '\t')))) {	/* INTL: ISO space. */
 		break;
 	    }
 	    if (copy != 0) {
diff --git a/win/tclConfig.sh.in b/win/tclConfig.sh.in
index 65bc5c5..00a8790 100644
--- a/win/tclConfig.sh.in
+++ b/win/tclConfig.sh.in
@@ -175,6 +175,6 @@ TCL_BUILD_STUB_LIB_PATH='@TCL_BUILD_STUB_LIB_PATH@'
 # Path to the Tcl stub library in the install directory.
 TCL_STUB_LIB_PATH='@TCL_STUB_LIB_PATH@'
 
-# Flag, 1: we built Tcl with threads enables, 0 we didn't
+# Flag, 1: we built Tcl with threads enabled, 0 we didn't
 TCL_THREADS=@TCL_THREADS@
 
diff --git a/win/tclWin32Dll.c b/win/tclWin32Dll.c
index 019d76f..688fa8d 100644
--- a/win/tclWin32Dll.c
+++ b/win/tclWin32Dll.c
@@ -25,23 +25,6 @@
 static HINSTANCE hInstance;	/* HINSTANCE of this DLL. */
 static int platformId;		/* Running under NT, or 95/98? */
 
-#ifdef HAVE_NO_SEH
-/*
- * Unlike Borland and Microsoft, we don't register exception handlers by
- * pushing registration records onto the runtime stack. Instead, we register
- * them by creating an EXCEPTION_REGISTRATION within the activation record.
- */
-
-typedef struct EXCEPTION_REGISTRATION {
-    struct EXCEPTION_REGISTRATION *link;
-    EXCEPTION_DISPOSITION (*handler)(
-	    struct _EXCEPTION_RECORD*, void*, struct _CONTEXT*, void*);
-    void *ebp;
-    void *esp;
-    int status;
-} EXCEPTION_REGISTRATION;
-#endif
-
 /*
  * VC++ 5.x has no 'cpuid' assembler instruction, so we must emulate it
  */
@@ -86,7 +69,7 @@ TCL_DECLARE_MUTEX(mountPointMap)
  * We will need this below.
  */
 
-#ifdef __WIN32__
+#ifdef _WIN32
 #ifndef STATIC_BUILD
 
 /*
@@ -154,7 +137,7 @@ DllMain(
     return TRUE;
 }
 #endif /* !STATIC_BUILD */
-#endif /* __WIN32__ */
+#endif /* _WIN32 */
 
 /*
  *----------------------------------------------------------------------
@@ -198,11 +181,11 @@ void
 TclWinInit(
     HINSTANCE hInst)		/* Library instance handle. */
 {
-    OSVERSIONINFO os;
+    OSVERSIONINFOW os;
 
     hInstance = hInst;
-    os.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
-    GetVersionEx(&os);
+    os.dwOSVersionInfoSize = sizeof(OSVERSIONINFOW);
+    GetVersionExW(&os);
     platformId = os.dwPlatformId;
 
     /*
@@ -281,16 +264,9 @@ TclWinNoBackslash(
 /*
  *---------------------------------------------------------------------------
  *
- * TclWinSetInterfaces --
+ * TclpSetInterfaces --
  *
- *	A helper proc that allows the test library to change the tclWinProcs
- *	structure to dispatch to either the wide-character or multi-byte
- *	versions of the operating system calls, depending on whether Unicode
- *	is the system encoding.
- *
- *	As well as this, we can also try to load in some additional procs
- *	which may/may not be present depending on the current Windows version
- *	(e.g. Win95 will not have the procs below).
+ *	A helper proc that initializes winTCharEncoding.
  *
  * Results:
  *	None.
@@ -302,15 +278,10 @@ TclWinNoBackslash(
  */
 
 void
-TclWinSetInterfaces(
-    int wide)			/* Non-zero to use wide interfaces, 0
-				 * otherwise. */
+TclpSetInterfaces(void)
 {
-	TclWinResetInterfaces();
-
-    if (wide) {
-	winTCharEncoding = Tcl_GetEncoding(NULL, "unicode");
-    }
+    TclWinResetInterfaces();
+    winTCharEncoding = Tcl_GetEncoding(NULL, "unicode");
 }
 
 /*
@@ -318,9 +289,7 @@ TclWinSetInterfaces(
  *
  * TclWinEncodingsCleanup --
  *
- *	Called during finalization to free up any encodings we use. The
- *	tclWinProcs-> look up table is still ok to use after this call,
- *	provided no encoding conversion is required.
+ *	Called during finalization to free up any encodings we use.
  *
  *	We also clean up any memory allocated in our mount point map which is
  *	used to follow certain kinds of symlinks. That code should never be
@@ -363,8 +332,6 @@ TclWinEncodingsCleanup(void)
  * TclWinResetInterfaces --
  *
  *	Called during finalization to reset us to a safe state for reuse.
- *	After this call, it is best not to use the tclWinProcs-> look up table
- *	since it is likely to be different to what is expected.
  *
  * Results:
  *	None.
@@ -678,7 +645,7 @@ TclWinCPUID(
 
 #   else
 
-    EXCEPTION_REGISTRATION registration;
+    TCLEXCEPTION_REGISTRATION registration;
 
     /*
      * Execute the CPUID instruction with the given index, and store results
@@ -687,7 +654,7 @@ TclWinCPUID(
 
     __asm__ __volatile__(
 	/*
-	 * Construct an EXCEPTION_REGISTRATION to protect the CPUID
+	 * Construct an TCLEXCEPTION_REGISTRATION to protect the CPUID
 	 * instruction (early 486's don't have CPUID)
 	 */
 
@@ -701,7 +668,7 @@ TclWinCPUID(
 	"movl	%[error],	0x10(%%edx)"	"\n\t" /* status */
 
 	/*
-	 * Link the EXCEPTION_REGISTRATION on the chain
+	 * Link the TCLEXCEPTION_REGISTRATION on the chain
 	 */
 
 	"movl	%%edx,		%%fs:0"		"\n\t"
@@ -720,7 +687,7 @@ TclWinCPUID(
 	"movl	%%edx,		0xc(%%edi)"	"\n\t"
 
 	/*
-	 * Come here on a normal exit. Recover the EXCEPTION_REGISTRATION and
+	 * Come here on a normal exit. Recover the TCLEXCEPTION_REGISTRATION and
 	 * store a TCL_OK status.
 	 */
 
@@ -730,7 +697,7 @@ TclWinCPUID(
 	"jmp	2f"				"\n"
 
 	/*
-	 * Come here on an exception. Get the EXCEPTION_REGISTRATION that we
+	 * Come here on an exception. Get the TCLEXCEPTION_REGISTRATION that we
 	 * previously put on the chain.
 	 */
 
@@ -740,7 +707,7 @@ TclWinCPUID(
 
 	/*
 	 * Come here however we exited. Restore context from the
-	 * EXCEPTION_REGISTRATION in case the stack is unbalanced.
+	 * TCLEXCEPTION_REGISTRATION in case the stack is unbalanced.
 	 */
 
 	"2:"					"\t"
diff --git a/win/tclWinChan.c b/win/tclWinChan.c
index 52b9e32..48acacb 100644
--- a/win/tclWinChan.c
+++ b/win/tclWinChan.c
@@ -95,7 +95,7 @@ static void		FileThreadActionProc(ClientData instanceData,
 static int		FileTruncateProc(ClientData instanceData,
 			    Tcl_WideInt length);
 static DWORD		FileGetType(HANDLE handle);
-
+static int		NativeIsComPort(CONST TCHAR *nativeName);
 /*
  * This structure describes the channel type structure for file based IO.
  */
@@ -119,23 +119,6 @@ static const Tcl_ChannelType fileChannelType = {
     FileThreadActionProc,	/* Thread action proc. */
     FileTruncateProc		/* Truncate proc. */
 };
-
-#ifdef HAVE_NO_SEH
-/*
- * Unlike Borland and Microsoft, we don't register exception handlers by
- * pushing registration records onto the runtime stack. Instead, we register
- * them by creating an EXCEPTION_REGISTRATION within the activation record.
- */
-
-typedef struct EXCEPTION_REGISTRATION {
-    struct EXCEPTION_REGISTRATION *link;
-    EXCEPTION_DISPOSITION (*handler)(
-	    struct _EXCEPTION_RECORD*, void*, struct _CONTEXT*, void*);
-    void *ebp;
-    void *esp;
-    int status;
-} EXCEPTION_REGISTRATION;
-#endif
 
 /*
  *----------------------------------------------------------------------
@@ -679,6 +662,10 @@ FileInputProc(
     *errorCode = 0;
 
     /*
+     * TODO: This comment appears to be out of date.  We *do* have a
+     * console driver, over in tclWinConsole.c.  After some Windows
+     * developer confirms, this comment should be revised.
+     *
      * Note that we will block on reads from a console buffer until a full
      * line has been entered. The only way I know of to get around this is to
      * write a console driver. We should probably do this at some point, but
@@ -902,6 +889,33 @@ TclpOpenFileChannel(
     }
 
     /*
+     * [2413550] Avoid double-open of serial ports on Windows
+     * Special handling for Windows serial ports by a "name-hint"
+     * to directly open it with the OVERLAPPED flag set.
+     */
+
+    if( NativeIsComPort(nativeName) ) {
+
+	handle = TclWinSerialOpen(INVALID_HANDLE_VALUE, nativeName, accessMode);
+	if (handle == INVALID_HANDLE_VALUE) {
+	    TclWinConvertError(GetLastError());
+	    if (interp != (Tcl_Interp *) NULL) {
+		Tcl_AppendResult(interp, "couldn't open serial \"",
+			TclGetString(pathPtr), "\": ",
+			Tcl_PosixError(interp), NULL);
+	    }
+	    return NULL;
+	}
+
+	/*
+	* For natively named Windows serial ports we are done.
+	*/
+	channel = TclWinOpenSerialChannel(handle, channelName,
+		channelPermissions);
+
+	return channel;
+    }
+    /*
      * If the file is being created, get the file attributes from the
      * permissions argument, else use the existing file attributes.
      */
@@ -952,11 +966,15 @@ TclpOpenFileChannel(
     switch (FileGetType(handle)) {
     case FILE_TYPE_SERIAL:
 	/*
+	 * Natively named serial ports "com1-9", "\\\\.\\comXX" are 
+	 * already done with the code above.
+	 * Here we handle all other serial port names.
+	 *
 	 * Reopen channel for OVERLAPPED operation. Normally this shouldn't
 	 * fail, because the channel exists.
 	 */
 
-	handle = TclWinSerialReopen(handle, nativeName, accessMode);
+	handle = TclWinSerialOpen(handle, nativeName, accessMode);
 	if (handle == INVALID_HANDLE_VALUE) {
 	    TclWinConvertError(GetLastError());
 	    if (interp != (Tcl_Interp *) NULL) {
@@ -1030,7 +1048,7 @@ Tcl_MakeFileChannel(
 				 * TCL_WRITABLE to indicate file mode. */
 {
 #if defined(HAVE_NO_SEH) && !defined(_WIN64)
-    EXCEPTION_REGISTRATION registration;
+    TCLEXCEPTION_REGISTRATION registration;
 #endif
     char channelName[16 + TCL_INTEGER_SPACE];
     Tcl_Channel channel = NULL;
@@ -1111,7 +1129,7 @@ Tcl_MakeFileChannel(
 	    "movl       %[dupedHandle], %%ebx"          "\n\t"
 
 	    /*
-	     * Construct an EXCEPTION_REGISTRATION to protect the call to
+	     * Construct an TCLEXCEPTION_REGISTRATION to protect the call to
 	     * CloseHandle.
 	     */
 
@@ -1125,7 +1143,7 @@ Tcl_MakeFileChannel(
 	    "movl       $0,             0x10(%%edx)"    "\n\t" /* status */
 
 	    /*
-	     * Link the EXCEPTION_REGISTRATION on the chain.
+	     * Link the TCLEXCEPTION_REGISTRATION on the chain.
 	     */
 
 	    "movl       %%edx,          %%fs:0"         "\n\t"
@@ -1138,7 +1156,7 @@ Tcl_MakeFileChannel(
 	    "call       _CloseHandle@4"                 "\n\t"
 
 	    /*
-	     * Come here on normal exit. Recover the EXCEPTION_REGISTRATION
+	     * Come here on normal exit. Recover the TCLEXCEPTION_REGISTRATION
 	     * and put a TRUE status return into it.
 	     */
 
@@ -1148,7 +1166,7 @@ Tcl_MakeFileChannel(
 	    "jmp        2f"                             "\n"
 
 	    /*
-	     * Come here on an exception. Recover the EXCEPTION_REGISTRATION
+	     * Come here on an exception. Recover the TCLEXCEPTION_REGISTRATION
 	     */
 
 	    "1:"                                        "\t"
@@ -1157,7 +1175,7 @@ Tcl_MakeFileChannel(
 
 	    /*
 	     * Come here however we exited. Restore context from the
-	     * EXCEPTION_REGISTRATION in case the stack is unbalanced.
+	     * TCLEXCEPTION_REGISTRATION in case the stack is unbalanced.
 	     */
 
 	    "2:"                                        "\t"
@@ -1496,6 +1514,74 @@ FileGetType(
     return type;
 }
 
+ /*
+ *----------------------------------------------------------------------
+ *
+ * NativeIsComPort --
+ *
+ *	Determines if a path refers to a Windows serial port.
+ *	A simple and efficient solution is to use a "name hint" to detect 
+ *      COM ports by their filename instead of resorting to a syscall 
+ *	to detect serialness after the fact.
+ *	The following patterns cover common serial port names:
+ *	    COM[1-9]:?
+ *	    //./COM[0-9]+
+ *	    \\.\COM[0-9]+
+ *
+ * Results:
+ *	1 = serial port, 0 = not.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+NativeIsComPort(
+    const TCHAR *nativePath)	/* Path of file to access, native encoding. */
+{
+    const WCHAR *p = (const WCHAR *) nativePath;
+    int i, len = wcslen(p);
+
+    /*
+     * 1. Look for com[1-9]:?
+     */
+
+    if ( (len >= 4) && (len <= 5) 
+	    && (_wcsnicmp(p, L"com", 3) == 0) ) {
+	/*
+	* The 4th character must be a digit 1..9 optionally followed by a ":"
+	*/
+	
+	if ( (p[3] < L'1') || (p[3] > L'9') ) {
+	    return 0;
+	}
+	if ( (len == 5) && (p[4] != L':') ) {
+	    return 0;
+	}
+	return 1;
+    }
+    
+    /*
+     * 2. Look for //./com[0-9]+ or \\.\com[0-9]+
+     */
+    
+    if ( (len >= 8) && ( 
+	       (_wcsnicmp(p, L"//./com", 7) == 0)
+	    || (_wcsnicmp(p, L"\\\\.\\com", 7) == 0) ) )
+    {
+	/*
+	* Charaters 8..end must be a digits 0..9
+	*/
+    
+	for ( i=7; i<len; i++ ) {
+	    if ( (p[i] < '0') || (p[i] > '9') ) {
+		return 0;
+	    }
+	}
+	return 1;
+    }
+    return 0;
+}
+
 /*
  * Local Variables:
  * mode: c
diff --git a/win/tclWinConsole.c b/win/tclWinConsole.c
index 5aab255..6630083 100644
--- a/win/tclWinConsole.c
+++ b/win/tclWinConsole.c
@@ -11,7 +11,6 @@
  */
 
 #include "tclWinInt.h"
-#include <sys/stat.h>
 
 /*
  * The following variable is used to tell whether this module has been
@@ -757,6 +756,13 @@ ConsoleInputProc(
 
     if (ReadConsoleBytes(infoPtr->handle, (LPVOID) buf, (DWORD) bufSize,
 	    &count) == TRUE) {
+	/*
+	 * TODO: This potentially writes beyond the limits specified
+	 * by the caller.  In practice this is harmless, since all writes
+	 * are into ChannelBuffers, and those have padding, but still
+	 * ought to remove this, unless some Windows wizard can give
+	 * a reason not to.  
+	 */
 	buf[count] = '\0';
 	return count;
     }
@@ -801,7 +807,7 @@ ConsoleOutputProc(
 	 * the channel is in non-blocking mode.
 	 */
 
-	errno = EAGAIN;
+	errno = EWOULDBLOCK;
 	goto error;
     }
 
@@ -1080,7 +1086,7 @@ WaitForRead(
 	     * is in non-blocking mode.
 	     */
 
-	    errno = EAGAIN;
+	    errno = EWOULDBLOCK;
 	    return -1;
 	}
 
diff --git a/win/tclWinDde.c b/win/tclWinDde.c
index 23b3a8e..ce0b413 100644
--- a/win/tclWinDde.c
+++ b/win/tclWinDde.c
@@ -11,19 +11,14 @@
  */
 
 #undef STATIC_BUILD
-#undef USE_TCL_STUBS
-#define USE_TCL_STUBS
+#ifndef USE_TCL_STUBS
+#   define USE_TCL_STUBS
+#endif
 #include "tclInt.h"
 #include <dde.h>
 #include <ddeml.h>
 
-#ifdef UNICODE
-#   if !defined(NDEBUG)
-	/* test POKE server Implemented for UNICODE in debug mode only */
-#	undef CBF_FAIL_POKES
-#	define CBF_FAIL_POKES 0
-#   endif
-#else
+#ifndef UNICODE
 #   undef CP_WINUNICODE
 #   define CP_WINUNICODE CP_WINANSI
 #   undef Tcl_WinTCharToUtf
@@ -32,6 +27,12 @@
 #   define Tcl_WinUtfToTChar(a,b,c) Tcl_UtfToExternalDString(NULL,a,b,c)
 #endif
 
+#if !defined(NDEBUG)
+    /* test POKE server Implemented for debug mode only */
+#   undef CBF_FAIL_POKES
+#   define CBF_FAIL_POKES 0
+#endif
+
 /*
  * TCL_STORAGE_CLASS is set unconditionally to DLLEXPORT because the Dde_Init
  * declaration is in the source file itself, which is only accessed when we
@@ -96,7 +97,7 @@ static DWORD ddeInstance;	/* The application instance handle given to us
 				 * by DdeInitialize. */
 static int ddeIsServer = 0;
 
-#define TCL_DDE_VERSION		"1.4.0b1"
+#define TCL_DDE_VERSION		"1.4.0"
 #define TCL_DDE_PACKAGE_NAME	"dde"
 #define TCL_DDE_SERVICE_NAME	TEXT("TclEval")
 #define TCL_DDE_EXECUTE_RESULT	TEXT("$TCLEVAL$EXECUTE$RESULT")
@@ -385,7 +386,8 @@ DdeSetServerName(
 		    Tcl_DStringSetLength(&dString, offset + sizeof(TCHAR) * TCL_INTEGER_SPACE);
 		    actualName = (TCHAR *) Tcl_DStringValue(&dString);
 		}
-		_stprintf((TCHAR *) (Tcl_DStringValue(&dString) + offset), TEXT("%d"), suffix);
+		_sntprintf((TCHAR *) (Tcl_DStringValue(&dString) + offset),
+			TCL_INTEGER_SPACE, TEXT("%d"), suffix);
 	    }
 
 	    /*
@@ -756,7 +758,7 @@ DdeServerProc(
 		} else {
 		    returnString = (char *)
 			    Tcl_GetUnicodeFromObj(convPtr->returnPackagePtr, &len);
-		    len = 2 * len + 1;
+		    len = sizeof(TCHAR) * len + 1;
 		}
 		ddeReturn = DdeCreateDataHandle(ddeInstance, (BYTE *)returnString,
 			(DWORD) len+1, 0, ddeItem, uFmt, 0);
@@ -777,7 +779,7 @@ DdeServerProc(
 			} else {
 			    returnString = (char *) Tcl_GetUnicodeFromObj(
 				    variableObjPtr, &len);
-			    len = 2 * len + 1;
+			    len = sizeof(TCHAR) * len + 1;
 			}
 			ddeReturn = DdeCreateDataHandle(ddeInstance,
 				(BYTE *)returnString, (DWORD) len+1, 0, ddeItem,
@@ -1494,15 +1496,15 @@ DdeObjCmd(
 
     case DDE_EXECUTE: {
 	int dataLength;
-	const char *dataString;
+	const Tcl_UniChar *dataString;
 
 	if (flags & DDE_FLAG_BINARY) {
-	    dataString = (const char *)
+	    dataString = (const Tcl_UniChar *)
 		    Tcl_GetByteArrayFromObj(objv[firstArg + 2], &dataLength);
 	} else {
 	    dataString =
-		    Tcl_GetStringFromObj(objv[firstArg + 2], &dataLength);
-	    dataLength += 1;
+		    Tcl_GetUnicodeFromObj(objv[firstArg + 2], &dataLength);
+	    dataLength = (dataLength + 1) * sizeof(Tcl_UniChar);
 	}
 
 	if (dataLength <= 0) {
@@ -1523,15 +1525,15 @@ DdeObjCmd(
 	}
 
 	ddeData = DdeCreateDataHandle(ddeInstance, (BYTE *) dataString,
-		(DWORD) dataLength, 0, 0, CF_TEXT, 0);
+		(DWORD) dataLength, 0, 0, (flags & DDE_FLAG_BINARY) ? CF_TEXT : CF_UNICODETEXT, 0);
 	if (ddeData != NULL) {
 	    if (flags & DDE_FLAG_ASYNC) {
 		DdeClientTransaction((LPBYTE) ddeData, 0xFFFFFFFF, hConv, 0,
-			CF_TEXT, XTYP_EXECUTE, TIMEOUT_ASYNC, &ddeResult);
+			(flags & DDE_FLAG_BINARY) ? CF_TEXT : CF_UNICODETEXT, XTYP_EXECUTE, TIMEOUT_ASYNC, &ddeResult);
 		DdeAbandonTransaction(ddeInstance, hConv, ddeResult);
 	    } else {
 		ddeReturn = DdeClientTransaction((LPBYTE) ddeData, 0xFFFFFFFF,
-			hConv, 0, CF_TEXT, XTYP_EXECUTE, 30000, NULL);
+			hConv, 0, (flags & DDE_FLAG_BINARY) ? CF_TEXT : CF_UNICODETEXT, XTYP_EXECUTE, 30000, NULL);
 		if (ddeReturn == 0) {
 		    SetDdeError(interp);
 		    result = TCL_ERROR;
@@ -1573,22 +1575,23 @@ DdeObjCmd(
 		    CP_WINUNICODE);
 	    if (ddeItem != NULL) {
 		ddeData = DdeClientTransaction(NULL, 0, hConv, ddeItem,
-			CF_TEXT, XTYP_REQUEST, 5000, NULL);
+			(flags & DDE_FLAG_BINARY) ? CF_TEXT : CF_UNICODETEXT, XTYP_REQUEST, 5000, NULL);
 		if (ddeData == NULL) {
 		    SetDdeError(interp);
 		    result = TCL_ERROR;
 		} else {
 		    DWORD tmp;
-		    const char *dataString = (const char *) DdeAccessData(ddeData, &tmp);
+		    const Tcl_UniChar *dataString = (const Tcl_UniChar *) DdeAccessData(ddeData, &tmp);
 
 		    if (flags & DDE_FLAG_BINARY) {
 			returnObjPtr =
 				Tcl_NewByteArrayObj((BYTE *) dataString, (int) tmp);
 		    } else {
-			if (tmp && !dataString[tmp-1]) {
+			tmp >>= 1;
+			if (tmp && !dataString[(tmp-1)]) {
 			    --tmp;
 			}
-			returnObjPtr = Tcl_NewStringObj(dataString,
+			returnObjPtr = Tcl_NewUnicodeObj(dataString,
 				(int) tmp);
 		    }
 		    DdeUnaccessData(ddeData);
@@ -1625,8 +1628,8 @@ DdeObjCmd(
 		    Tcl_GetByteArrayFromObj(objv[firstArg + 3], &length);
 	} else {
 	    dataString = (BYTE *)
-		    Tcl_GetStringFromObj(objv[firstArg + 3], &length);
-	    length += 1;
+		    Tcl_GetUnicodeFromObj(objv[firstArg + 3], &length);
+	    length = 2 * length + 1;
 	}
 
 	hConv = DdeConnect(ddeInstance, ddeService, ddeTopic, NULL);
@@ -1641,7 +1644,7 @@ DdeObjCmd(
 		    CP_WINUNICODE);
 	    if (ddeItem != NULL) {
 		ddeData = DdeClientTransaction(dataString, (DWORD) length,
-			hConv, ddeItem, CF_TEXT, XTYP_POKE, 5000, NULL);
+			hConv, ddeItem, (flags & DDE_FLAG_BINARY) ? CF_TEXT : CF_UNICODETEXT, XTYP_POKE, 5000, NULL);
 		if (ddeData == NULL) {
 		    SetDdeError(interp);
 		    result = TCL_ERROR;
@@ -1784,24 +1787,24 @@ DdeObjCmd(
 	    }
 
 	    objPtr = Tcl_ConcatObj(objc, objv);
-	    string = Tcl_GetStringFromObj(objPtr, &length);
+	    string = (const char *) Tcl_GetUnicodeFromObj(objPtr, &length);
 	    ddeItemData = DdeCreateDataHandle(ddeInstance,
-		    (BYTE *) string, (DWORD) length+1, 0, 0, CF_TEXT, 0);
+		    (BYTE *) string, (DWORD) 2*length+2, 0, 0, CF_UNICODETEXT, 0);
 
 	    if (flags & DDE_FLAG_ASYNC) {
 		ddeData = DdeClientTransaction((LPBYTE) ddeItemData,
 			0xFFFFFFFF, hConv, 0,
-			CF_TEXT, XTYP_EXECUTE, TIMEOUT_ASYNC, &ddeResult);
+			CF_UNICODETEXT, XTYP_EXECUTE, TIMEOUT_ASYNC, &ddeResult);
 		DdeAbandonTransaction(ddeInstance, hConv, ddeResult);
 	    } else {
 		ddeData = DdeClientTransaction((LPBYTE) ddeItemData,
 			0xFFFFFFFF, hConv, 0,
-			CF_TEXT, XTYP_EXECUTE, 30000, NULL);
+			CF_UNICODETEXT, XTYP_EXECUTE, 30000, NULL);
 		if (ddeData != 0) {
 		    ddeCookie = DdeCreateStringHandle(ddeInstance,
 			    TCL_DDE_EXECUTE_RESULT, CP_WINUNICODE);
 		    ddeData = DdeClientTransaction(NULL, 0, hConv, ddeCookie,
-			    CF_TEXT, XTYP_REQUEST, 30000, NULL);
+			    CF_UNICODETEXT, XTYP_REQUEST, 30000, NULL);
 		}
 	    }
 
@@ -1815,6 +1818,7 @@ DdeObjCmd(
 
 	    if (!(flags & DDE_FLAG_ASYNC)) {
 		Tcl_Obj *resultPtr;
+		Tcl_UniChar *ddeDataString;
 
 		/*
 		 * The return handle has a two or four element list in it. The
@@ -1827,10 +1831,11 @@ DdeObjCmd(
 
 		resultPtr = Tcl_NewObj();
 		length = DdeGetData(ddeData, NULL, 0, 0);
-		Tcl_SetObjLength(resultPtr, (length + 1) * sizeof(TCHAR) - 1);
-		string = Tcl_GetString(resultPtr);
-		DdeGetData(ddeData, (BYTE *) string, (DWORD) length, 0);
-		Tcl_SetObjLength(resultPtr, (int) strlen(string));
+		ddeDataString = ckalloc(length);
+		DdeGetData(ddeData, (BYTE *) ddeDataString, (DWORD) length, 0);
+		length = (length >> 1) - 1;
+		resultPtr = Tcl_NewUnicodeObj(ddeDataString, length);
+		ckfree(ddeDataString);
 
 		if (Tcl_ListObjIndex(NULL, resultPtr, 0, &objPtr) != TCL_OK) {
 		    Tcl_DecrRefCount(resultPtr);
diff --git a/win/tclWinError.c b/win/tclWinError.c
index 49eeed3..4d3250d 100644
--- a/win/tclWinError.c
+++ b/win/tclWinError.c
@@ -292,7 +292,7 @@ static const unsigned char errorTable[] = {
  */
 
 static const unsigned char wsaErrorTable[] = {
-    EAGAIN,		/* WSAEWOULDBLOCK */
+    EWOULDBLOCK,	/* WSAEWOULDBLOCK */
     EINPROGRESS,	/* WSAEINPROGRESS */
     EALREADY,		/* WSAEALREADY */
     ENOTSOCK,		/* WSAENOTSOCK */
diff --git a/win/tclWinFCmd.c b/win/tclWinFCmd.c
index 80fad3e..52ea8c6 100644
--- a/win/tclWinFCmd.c
+++ b/win/tclWinFCmd.c
@@ -67,25 +67,6 @@ const TclFileAttrProcs tclpFileAttrProcs[] = {
 	{GetWinFileShortName, CannotSetAttribute},
 	{GetWinFileAttributes, SetWinFileAttributes}};
 
-#ifdef HAVE_NO_SEH
-
-/*
- * Unlike Borland and Microsoft, we don't register exception handlers by
- * pushing registration records onto the runtime stack. Instead, we register
- * them by creating an EXCEPTION_REGISTRATION within the activation record.
- */
-
-typedef struct EXCEPTION_REGISTRATION {
-    struct EXCEPTION_REGISTRATION *link;
-    EXCEPTION_DISPOSITION (*handler)(
-	    struct _EXCEPTION_RECORD *, void *, struct _CONTEXT *, void *);
-    void *ebp;
-    void *esp;
-    int status;
-} EXCEPTION_REGISTRATION;
-
-#endif
-
 /*
  * Prototype for the TraverseWinTree callback function.
  */
@@ -176,7 +157,7 @@ DoRenameFile(
 				 * (native). */
 {
 #if defined(HAVE_NO_SEH) && !defined(_WIN64)
-    EXCEPTION_REGISTRATION registration;
+    TCLEXCEPTION_REGISTRATION registration;
 #endif
     DWORD srcAttr, dstAttr;
     int retval = -1;
@@ -213,7 +194,7 @@ DoRenameFile(
 	"movl	    %[nativeSrc],   %%ecx"	    "\n\t"
 
 	/*
-	 * Construct an EXCEPTION_REGISTRATION to protect the call to
+	 * Construct an TCLEXCEPTION_REGISTRATION to protect the call to
 	 * MoveFile.
 	 */
 
@@ -227,7 +208,7 @@ DoRenameFile(
 	"movl	    $0,		    0x10(%%edx)"    "\n\t" /* status */
 
 	/*
-	 * Link the EXCEPTION_REGISTRATION on the chain.
+	 * Link the TCLEXCEPTION_REGISTRATION on the chain.
 	 */
 
 	"movl	    %%edx,	    %%fs:0"	    "\n\t"
@@ -242,7 +223,7 @@ DoRenameFile(
 	"call	    *%%eax"			    "\n\t"
 
 	/*
-	 * Come here on normal exit. Recover the EXCEPTION_REGISTRATION and
+	 * Come here on normal exit. Recover the TCLEXCEPTION_REGISTRATION and
 	 * put the status return from MoveFile into it.
 	 */
 
@@ -251,7 +232,7 @@ DoRenameFile(
 	"jmp	    2f"				    "\n"
 
 	/*
-	 * Come here on an exception. Recover the EXCEPTION_REGISTRATION
+	 * Come here on an exception. Recover the TCLEXCEPTION_REGISTRATION
 	 */
 
 	"1:"					    "\t"
@@ -260,7 +241,7 @@ DoRenameFile(
 
 	/*
 	 * Come here however we exited. Restore context from the
-	 * EXCEPTION_REGISTRATION in case the stack is unbalanced.
+	 * TCLEXCEPTION_REGISTRATION in case the stack is unbalanced.
 	 */
 
 	"2:"					    "\t"
@@ -563,7 +544,7 @@ DoCopyFile(
     const TCHAR *nativeDst)	/* Pathname of file to copy to (native). */
 {
 #if defined(HAVE_NO_SEH) && !defined(_WIN64)
-    EXCEPTION_REGISTRATION registration;
+    TCLEXCEPTION_REGISTRATION registration;
 #endif
     int retval = -1;
 
@@ -600,7 +581,7 @@ DoCopyFile(
 	"movl	    %[nativeSrc],   %%ecx"	    "\n\t"
 
 	/*
-	 * Construct an EXCEPTION_REGISTRATION to protect the call to
+	 * Construct an TCLEXCEPTION_REGISTRATION to protect the call to
 	 * CopyFile.
 	 */
 
@@ -614,7 +595,7 @@ DoCopyFile(
 	"movl	    $0,		    0x10(%%edx)"    "\n\t" /* status */
 
 	/*
-	 * Link the EXCEPTION_REGISTRATION on the chain.
+	 * Link the TCLEXCEPTION_REGISTRATION on the chain.
 	 */
 
 	"movl	    %%edx,	    %%fs:0"	    "\n\t"
@@ -630,7 +611,7 @@ DoCopyFile(
 	"call	    *%%eax"			    "\n\t"
 
 	/*
-	 * Come here on normal exit. Recover the EXCEPTION_REGISTRATION and
+	 * Come here on normal exit. Recover the TCLEXCEPTION_REGISTRATION and
 	 * put the status return from CopyFile into it.
 	 */
 
@@ -639,7 +620,7 @@ DoCopyFile(
 	"jmp	    2f"				    "\n"
 
 	/*
-	 * Come here on an exception. Recover the EXCEPTION_REGISTRATION
+	 * Come here on an exception. Recover the TCLEXCEPTION_REGISTRATION
 	 */
 
 	"1:"					    "\t"
@@ -648,7 +629,7 @@ DoCopyFile(
 
 	/*
 	 * Come here however we exited. Restore context from the
-	 * EXCEPTION_REGISTRATION in case the stack is unbalanced.
+	 * TCLEXCEPTION_REGISTRATION in case the stack is unbalanced.
 	 */
 
 	"2:"					    "\t"
@@ -1105,49 +1086,6 @@ DoRemoveJustDirectory(
 		SetFileAttributes(nativePath,
 			attr | FILE_ATTRIBUTE_READONLY);
 	    }
-
-	    /*
-	     * Windows 95 reports removing a non-empty directory as
-	     * EACCES, not EEXIST. If the directory is not empty, change errno
-	     * so caller knows what's going on.
-	     */
-
-	    if (TclWinGetPlatformId() == VER_PLATFORM_WIN32_WINDOWS) {
-		const char *path, *find;
-		HANDLE handle;
-		WIN32_FIND_DATAA data;
-		Tcl_DString buffer;
-		int len;
-
-		path = (const char *) nativePath;
-
-		Tcl_DStringInit(&buffer);
-		len = strlen(path);
-		find = Tcl_DStringAppend(&buffer, path, len);
-		if ((len > 0) && (find[len - 1] != '\\')) {
-		    TclDStringAppendLiteral(&buffer, "\\");
-		}
-		find = TclDStringAppendLiteral(&buffer, "*.*");
-		handle = FindFirstFileA(find, &data);
-		if (handle != INVALID_HANDLE_VALUE) {
-		    while (1) {
-			if ((strcmp(data.cFileName, ".") != 0)
-				&& (strcmp(data.cFileName, "..") != 0)) {
-			    /*
-			     * Found something in this directory.
-			     */
-
-			    Tcl_SetErrno(EEXIST);
-			    break;
-			}
-			if (FindNextFileA(handle, &data) == FALSE) {
-			    break;
-			}
-		    }
-		    FindClose(handle);
-		}
-		Tcl_DStringFree(&buffer);
-	    }
 	}
     }
 
@@ -1170,7 +1108,12 @@ DoRemoveJustDirectory(
 
   end:
     if (errorPtr != NULL) {
+	char *p;
 	Tcl_WinTCharToUtf(nativePath, -1, errorPtr);
+	p = Tcl_DStringValue(errorPtr);
+	for (; *p; ++p) {
+	    if (*p == '\\') *p = '/';
+	}
     }
     return TCL_ERROR;
 
@@ -1738,11 +1681,11 @@ ConvertFileNameFormat(
 	    }
 	    nativeName = data.cAlternateFileName;
 	    if (longShort) {
-		if (data.cFileName[0] != TEXT('\0')) {
+		if (data.cFileName[0] != '\0') {
 		    nativeName = data.cFileName;
 		}
 	    } else {
-		if (data.cAlternateFileName[0] == TEXT('\0')) {
+		if (data.cAlternateFileName[0] == '\0') {
 		    nativeName = (TCHAR *) data.cFileName;
 		}
 	    }
@@ -1887,12 +1830,12 @@ SetWinFileAttributes(
     Tcl_Obj *fileName,		/* The name of the file. */
     Tcl_Obj *attributePtr)	/* The new value of the attribute. */
 {
-    DWORD fileAttributes;
+    DWORD fileAttributes, old;
     int yesNo, result;
     const TCHAR *nativeName;
 
     nativeName = Tcl_FSGetNativePath(fileName);
-    fileAttributes = GetFileAttributes(nativeName);
+    fileAttributes = old = GetFileAttributes(nativeName);
 
     if (fileAttributes == 0xffffffff) {
 	StatError(interp, fileName);
@@ -1910,7 +1853,8 @@ SetWinFileAttributes(
 	fileAttributes &= ~(attributeArray[objIndex]);
     }
 
-    if (!SetFileAttributes(nativeName, fileAttributes)) {
+    if ((fileAttributes != old)
+	    && !SetFileAttributes(nativeName, fileAttributes)) {
 	StatError(interp, fileName);
 	return TCL_ERROR;
     }
diff --git a/win/tclWinFile.c b/win/tclWinFile.c
index a44a257..5761eeb 100644
--- a/win/tclWinFile.c
+++ b/win/tclWinFile.c
@@ -15,7 +15,6 @@
 #include "tclWinInt.h"
 #include "tclFileSystem.h"
 #include <winioctl.h>
-#include <sys/stat.h>
 #include <shlobj.h>
 #include <lm.h>		/* For TclpGetUserHome(). */
 
@@ -160,7 +159,7 @@ static unsigned short	NativeStatMode(DWORD attr, int checkLinks,
 			    int isExec);
 static int		NativeIsExec(const TCHAR *path);
 static int		NativeReadReparse(const TCHAR *LinkDirectory,
-			    REPARSE_DATA_BUFFER *buffer);
+			    REPARSE_DATA_BUFFER *buffer, DWORD desiredAccess);
 static int		NativeWriteReparse(const TCHAR *LinkDirectory,
 			    REPARSE_DATA_BUFFER *buffer);
 static int		NativeMatchType(int isDrive, DWORD attr,
@@ -444,7 +443,7 @@ TclWinSymLinkCopyDirectory(
     DUMMY_REPARSE_BUFFER dummy;
     REPARSE_DATA_BUFFER *reparseBuffer = (REPARSE_DATA_BUFFER *) &dummy;
 
-    if (NativeReadReparse(linkOrigPath, reparseBuffer)) {
+    if (NativeReadReparse(linkOrigPath, reparseBuffer, GENERIC_READ)) {
 	return -1;
     }
     return NativeWriteReparse(linkCopyPath, reparseBuffer);
@@ -542,7 +541,7 @@ WinReadLinkDirectory(
     if (!(attr & FILE_ATTRIBUTE_REPARSE_POINT)) {
 	goto invalidError;
     }
-    if (NativeReadReparse(linkDirPath, reparseBuffer)) {
+    if (NativeReadReparse(linkDirPath, reparseBuffer, 0)) {
 	return NULL;
     }
 
@@ -663,12 +662,13 @@ WinReadLinkDirectory(
 static int
 NativeReadReparse(
     const TCHAR *linkDirPath,	/* The junction to read */
-    REPARSE_DATA_BUFFER *buffer)/* Pointer to buffer. Cannot be NULL */
+    REPARSE_DATA_BUFFER *buffer,/* Pointer to buffer. Cannot be NULL */
+    DWORD desiredAccess)
 {
     HANDLE hFile;
     DWORD returnedLength;
 
-    hFile = CreateFile(linkDirPath, GENERIC_READ, 0, NULL, OPEN_EXISTING,
+    hFile = CreateFile(linkDirPath, desiredAccess, 0, NULL, OPEN_EXISTING,
 	    FILE_FLAG_OPEN_REPARSE_POINT | FILE_FLAG_BACKUP_SEMANTICS, NULL);
 
     if (hFile == INVALID_HANDLE_VALUE) {
@@ -799,7 +799,7 @@ tclWinDebugPanic(
     WCHAR msgString[TCL_MAX_WARN_LEN];
 
     va_start(argList, format);
-    _vsnprintf(buf, sizeof(buf), format, argList);
+    vsnprintf(buf, sizeof(buf), format, argList);
 
     msgString[TCL_MAX_WARN_LEN-1] = L'\0';
     MultiByteToWideChar(CP_UTF8, 0, buf, -1, msgString, TCL_MAX_WARN_LEN);
@@ -1537,14 +1537,9 @@ NativeAccess(
 	 * File might not exist.
 	 */
 
-	WIN32_FIND_DATA ffd;
-	HANDLE hFind;
-	hFind = FindFirstFile(nativePath, &ffd);
-	if (hFind != INVALID_HANDLE_VALUE) {
-	    attr = ffd.dwFileAttributes;
-	    FindClose(hFind);
-	} else {
-	    TclWinConvertError(GetLastError());
+	DWORD lasterror = GetLastError();
+	if (lasterror != ERROR_SHARING_VIOLATION) {
+	    TclWinConvertError(lasterror);
 	    return -1;
 	}
     }
@@ -1784,7 +1779,7 @@ NativeIsExec(
 	return 0;
     }
 
-    if (path[len-4] != TEXT('.')) {
+    if (path[len-4] != '.') {
 	return 0;
     }
 
@@ -1821,6 +1816,9 @@ TclpObjChdir(
 
     nativePath = Tcl_FSGetNativePath(pathPtr);
 
+    if (!nativePath) {
+	return -1;
+    }
     result = SetCurrentDirectory(nativePath);
 
     if (result == 0) {
@@ -2002,15 +2000,17 @@ NativeStat(
 
 	if (GetFileAttributesEx(nativePath,
 		GetFileExInfoStandard, &data) != TRUE) {
-	    /*
-	     * We might have just been denied access
-	     */
-
+	    HANDLE hFind;
 	    WIN32_FIND_DATA ffd;
-	    HANDLE hFind = FindFirstFile(nativePath, &ffd);
+	    DWORD lasterror = GetLastError();
 
+	    if (lasterror != ERROR_SHARING_VIOLATION) {
+		TclWinConvertError(lasterror);
+		return -1;
+		}
+	    hFind = FindFirstFile(nativePath, &ffd);
 	    if (hFind == INVALID_HANDLE_VALUE) {
-		Tcl_SetErrno(ENOENT);
+		TclWinConvertError(GetLastError());
 		return -1;
 	    }
 	    memcpy(&data, &ffd, sizeof(data));
@@ -2418,361 +2418,213 @@ TclpObjNormalizePath(
     Tcl_DStringInit(&dsNorm);
     path = Tcl_GetString(pathPtr);
 
-    if (TclWinGetPlatformId() == VER_PLATFORM_WIN32_WINDOWS) {
-	/*
-	 * We're on Win95, 98 or ME. There are two assumptions in this block
-	 * of code. First that the native (NULL) encoding is basically ascii,
-	 * and second that symbolic links are not possible. Both of these
-	 * assumptions appear to be true of these operating systems.
-	 *
-	 * FIXME: This code branch may be derelict as those are not supported
-	 * platforms any more.
-	 */
-
-	currentPathEndPosition = path + nextCheckpoint;
-	if (*currentPathEndPosition == '/') {
-	    currentPathEndPosition++;
-	}
-
-	while (1) {
-	    char cur = *currentPathEndPosition;
+    currentPathEndPosition = path + nextCheckpoint;
+    if (*currentPathEndPosition == '/') {
+	currentPathEndPosition++;
+    }
+    while (1) {
+	char cur = *currentPathEndPosition;
 
-	    if ((cur=='/' || cur==0) && (path != currentPathEndPosition)) {
-		/*
-		 * Reached directory separator, or end of string.
-		 */
+	if ((cur=='/' || cur==0) && (path != currentPathEndPosition)) {
+	    /*
+	     * Reached directory separator, or end of string.
+	     */
 
-		const char *nativePath = Tcl_UtfToExternalDString(NULL, path,
-			currentPathEndPosition - path, &ds);
+	    WIN32_FILE_ATTRIBUTE_DATA data;
+	    const TCHAR *nativePath = Tcl_WinUtfToTChar(path,
+		    currentPathEndPosition - path, &ds);
 
+	    if (GetFileAttributesEx(nativePath,
+		    GetFileExInfoStandard, &data) != TRUE) {
 		/*
-		 * Now we convert the tail of the current path to its 'long
-		 * form', and append it to 'dsNorm' which holds the current
-		 * normalized path, if the file exists.
+		 * File doesn't exist.
 		 */
 
 		if (isDrive) {
-		    if (GetFileAttributesA(nativePath)
-			    == INVALID_FILE_ATTRIBUTES) {
-			/*
-			 * File doesn't exist.
-			 */
-
-			if (isDrive) {
-			    int len = WinIsReserved(path);
-
-			    if (len > 0) {
-				/*
-				 * Actually it does exist - COM1, etc.
-				 */
-
-				int i;
-
-				for (i=0 ; i<len ; i++) {
-				    if (nativePath[i] >= 'a') {
-					((char *) nativePath)[i] -= ('a'-'A');
-				    }
-				}
-				Tcl_DStringAppend(&dsNorm, nativePath, len);
-				lastValidPathEnd = currentPathEndPosition;
-			    }
-			}
-			Tcl_DStringFree(&ds);
-			break;
-		    }
-		    if (nativePath[0] >= 'a') {
-			((char *) nativePath)[0] -= ('a' - 'A');
-		    }
-		    Tcl_DStringAppend(&dsNorm, nativePath,
-			    Tcl_DStringLength(&ds));
-		} else {
-		    char *checkDots = NULL;
-
-		    if (lastValidPathEnd[1] == '.') {
-			checkDots = lastValidPathEnd + 1;
-			while (checkDots < currentPathEndPosition) {
-			    if (*checkDots != '.') {
-				checkDots = NULL;
-				break;
-			    }
-			    checkDots++;
-			}
-		    }
-		    if (checkDots != NULL) {
-			int dotLen = currentPathEndPosition-lastValidPathEnd;
+		    int len = WinIsReserved(path);
 
+		    if (len > 0) {
 			/*
-			 * Path is just dots. We shouldn't really ever see a
-			 * path like that. However, to be nice we at least
-			 * don't mangle the path - we just add the dots as a
-			 * path segment and continue
-			 */
-
-			Tcl_DStringAppend(&dsNorm, (const char *)
-				(nativePath + Tcl_DStringLength(&ds)-dotLen),
-				dotLen);
-		    } else {
-			/*
-			 * Normal path.
+			 * Actually it does exist - COM1, etc.
 			 */
 
-			WIN32_FIND_DATAA fData;
-			HANDLE handle;
+			int i;
 
-			handle = FindFirstFileA(nativePath, &fData);
-			if (handle == INVALID_HANDLE_VALUE) {
-			    if (GetFileAttributesA(nativePath)
-				    == INVALID_FILE_ATTRIBUTES) {
-				/*
-				 * File doesn't exist.
-				 */
-
-				Tcl_DStringFree(&ds);
-				break;
-			    }
-
-			    /*
-			     * This is usually the '/' in 'c:/' at end of
-			     * string.
-			     */
-
-			    TclDStringAppendLiteral(&dsNorm, "/");
-			} else {
-			    char *nativeName;
+			for (i=0 ; i<len ; i++) {
+			    WCHAR wc = ((WCHAR *) nativePath)[i];
 
-			    if (fData.cFileName[0] != '\0') {
-				nativeName = fData.cFileName;
-			    } else {
-				nativeName = fData.cAlternateFileName;
+			    if (wc >= L'a') {
+				wc -= (L'a' - L'A');
+				((WCHAR *) nativePath)[i] = wc;
 			    }
-			    FindClose(handle);
-			    TclDStringAppendLiteral(&dsNorm, "/");
-			    Tcl_DStringAppend(&dsNorm, nativeName, -1);
 			}
+			Tcl_DStringAppend(&dsNorm,
+				(const char *)nativePath,
+				(int)(sizeof(WCHAR) * len));
+			lastValidPathEnd = currentPathEndPosition;
+		    } else if (nextCheckpoint == 0) {
+			/* Path starts with a drive designation
+			 * that's not actually on the system.
+			 * We still must normalize up past the
+			 * first separator.  [Bug 3603434] */
+			currentPathEndPosition++;
 		    }
 		}
 		Tcl_DStringFree(&ds);
-		lastValidPathEnd = currentPathEndPosition;
-		if (cur == 0) {
-		    break;
-		}
-
-		/*
-		 * If we get here, we've got past one directory delimiter, so
-		 * we know it is no longer a drive.
-		 */
-
-		isDrive = 0;
+		break;
 	    }
-	    currentPathEndPosition++;
-	}
-    } else {
-	/*
-	 * We're on WinNT (or 2000 or XP; something with an NT core).
-	 */
 
-	currentPathEndPosition = path + nextCheckpoint;
-	if (*currentPathEndPosition == '/') {
-	    currentPathEndPosition++;
-	}
-	while (1) {
-	    char cur = *currentPathEndPosition;
+	    /*
+	     * File 'nativePath' does exist if we get here. We now want to
+	     * check if it is a symlink and otherwise continue with the
+	     * rest of the path.
+	     */
 
-	    if ((cur=='/' || cur==0) && (path != currentPathEndPosition)) {
-		/*
-		 * Reached directory separator, or end of string.
-		 */
+	    /*
+	     * Check for symlinks, except at last component of path (we
+	     * don't follow final symlinks). Also a drive (C:/) for
+	     * example, may sometimes have the reparse flag set for some
+	     * reason I don't understand. We therefore don't perform this
+	     * check for drives.
+	     */
 
-		WIN32_FILE_ATTRIBUTE_DATA data;
-		const TCHAR *nativePath = Tcl_WinUtfToTChar(path,
-			currentPathEndPosition - path, &ds);
+	    if (cur != 0 && !isDrive &&
+		    data.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT){
+		Tcl_Obj *to = WinReadLinkDirectory(nativePath);
 
-		if (GetFileAttributesEx(nativePath,
-			GetFileExInfoStandard, &data) != TRUE) {
+		if (to != NULL) {
 		    /*
-		     * File doesn't exist.
+		     * Read the reparse point ok. Now, reparse points need
+		     * not be normalized, otherwise we could use:
+		     *
+		     * Tcl_GetStringFromObj(to, &pathLen);
+		     * nextCheckpoint = pathLen;
+		     *
+		     * So, instead we have to start from the beginning.
 		     */
 
-		    if (isDrive) {
-			int len = WinIsReserved(path);
-
-			if (len > 0) {
-			    /*
-			     * Actually it does exist - COM1, etc.
-			     */
+		    nextCheckpoint = 0;
+		    Tcl_AppendToObj(to, currentPathEndPosition, -1);
 
-			    int i;
-
-			    for (i=0 ; i<len ; i++) {
-				WCHAR wc = ((WCHAR *) nativePath)[i];
+		    /*
+		     * Convert link to forward slashes.
+		     */
 
-				if (wc >= L'a') {
-				    wc -= (L'a' - L'A');
-				    ((WCHAR *) nativePath)[i] = wc;
-				}
-			    }
-			    Tcl_DStringAppend(&dsNorm,
-				    (const char *)nativePath,
-				    (int)(sizeof(WCHAR) * len));
-			    lastValidPathEnd = currentPathEndPosition;
+		    for (path = Tcl_GetString(to); *path != 0; path++) {
+			if (*path == '\\') {
+			    *path = '/';
 			}
 		    }
-		    Tcl_DStringFree(&ds);
-		    break;
-		}
-
-		/*
-		 * File 'nativePath' does exist if we get here. We now want to
-		 * check if it is a symlink and otherwise continue with the
-		 * rest of the path.
-		 */
-
-		/*
-		 * Check for symlinks, except at last component of path (we
-		 * don't follow final symlinks). Also a drive (C:/) for
-		 * example, may sometimes have the reparse flag set for some
-		 * reason I don't understand. We therefore don't perform this
-		 * check for drives.
-		 */
+		    path = Tcl_GetString(to);
+		    currentPathEndPosition = path + nextCheckpoint;
+		    if (temp != NULL) {
+			Tcl_DecrRefCount(temp);
+		    }
+		    temp = to;
 
-		if (cur != 0 && !isDrive &&
-			data.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT){
-		    Tcl_Obj *to = WinReadLinkDirectory(nativePath);
+		    /*
+		     * Reset variables so we can restart normalization.
+		     */
 
-		    if (to != NULL) {
-			/*
-			 * Read the reparse point ok. Now, reparse points need
-			 * not be normalized, otherwise we could use:
-			 *
-			 * Tcl_GetStringFromObj(to, &pathLen);
-			 * nextCheckpoint = pathLen;
-			 *
-			 * So, instead we have to start from the beginning.
-			 */
+		    isDrive = 1;
+		    Tcl_DStringFree(&dsNorm);
+		    Tcl_DStringFree(&ds);
+		    continue;
+		}
+	    }
 
-			nextCheckpoint = 0;
-			Tcl_AppendToObj(to, currentPathEndPosition, -1);
+#ifndef TclNORM_LONG_PATH
+	    /*
+	     * Now we convert the tail of the current path to its 'long
+	     * form', and append it to 'dsNorm' which holds the current
+	     * normalized path
+	     */
 
-			/*
-			 * Convert link to forward slashes.
-			 */
+	    if (isDrive) {
+		WCHAR drive = ((WCHAR *) nativePath)[0];
 
-			for (path = Tcl_GetString(to); *path != 0; path++) {
-			    if (*path == '\\') {
-				*path = '/';
-			    }
-			}
-			path = Tcl_GetString(to);
-			currentPathEndPosition = path + nextCheckpoint;
-			if (temp != NULL) {
-			    Tcl_DecrRefCount(temp);
+		if (drive >= L'a') {
+		    drive -= (L'a' - L'A');
+		    ((WCHAR *) nativePath)[0] = drive;
+		}
+		Tcl_DStringAppend(&dsNorm, (const char *)nativePath,
+			Tcl_DStringLength(&ds));
+	    } else {
+		char *checkDots = NULL;
+
+		if (lastValidPathEnd[1] == '.') {
+		    checkDots = lastValidPathEnd + 1;
+		    while (checkDots < currentPathEndPosition) {
+			if (*checkDots != '.') {
+			    checkDots = NULL;
+			    break;
 			}
-			temp = to;
-
-			/*
-			 * Reset variables so we can restart normalization.
-			 */
-
-			isDrive = 1;
-			Tcl_DStringFree(&dsNorm);
-			Tcl_DStringFree(&ds);
-			continue;
+			checkDots++;
 		    }
 		}
+		if (checkDots != NULL) {
+		    int dotLen = currentPathEndPosition-lastValidPathEnd;
 
-#ifndef TclNORM_LONG_PATH
-		/*
-		 * Now we convert the tail of the current path to its 'long
-		 * form', and append it to 'dsNorm' which holds the current
-		 * normalized path
-		 */
-
-		if (isDrive) {
-		    WCHAR drive = ((WCHAR *) nativePath)[0];
+		    /*
+		     * Path is just dots. We shouldn't really ever see a
+		     * path like that. However, to be nice we at least
+		     * don't mangle the path - we just add the dots as a
+		     * path segment and continue.
+		     */
 
-		    if (drive >= L'a') {
-			drive -= (L'a' - L'A');
-			((WCHAR *) nativePath)[0] = drive;
-		    }
-		    Tcl_DStringAppend(&dsNorm, (const char *)nativePath,
-			    Tcl_DStringLength(&ds));
+		    Tcl_DStringAppend(&dsNorm, ((const char *)nativePath)
+			    + Tcl_DStringLength(&ds)
+			    - (dotLen * sizeof(TCHAR)),
+			    (int)(dotLen * sizeof(TCHAR)));
 		} else {
-		    char *checkDots = NULL;
-
-		    if (lastValidPathEnd[1] == '.') {
-			checkDots = lastValidPathEnd + 1;
-			while (checkDots < currentPathEndPosition) {
-			    if (*checkDots != '.') {
-				checkDots = NULL;
-				break;
-			    }
-			    checkDots++;
-			}
-		    }
-		    if (checkDots != NULL) {
-			int dotLen = currentPathEndPosition-lastValidPathEnd;
+		    /*
+		     * Normal path.
+		     */
 
-			/*
-			 * Path is just dots. We shouldn't really ever see a
-			 * path like that. However, to be nice we at least
-			 * don't mangle the path - we just add the dots as a
-			 * path segment and continue.
-			 */
+		    WIN32_FIND_DATAW fData;
+		    HANDLE handle;
 
-			Tcl_DStringAppend(&dsNorm, ((const char *)nativePath)
-				+ Tcl_DStringLength(&ds)
-				- (dotLen * sizeof(TCHAR)),
-				(int)(dotLen * sizeof(TCHAR)));
-		    } else {
+		    handle = FindFirstFileW((WCHAR *) nativePath, &fData);
+		    if (handle == INVALID_HANDLE_VALUE) {
 			/*
-			 * Normal path.
+			 * This is usually the '/' in 'c:/' at end of
+			 * string.
 			 */
 
-			WIN32_FIND_DATAW fData;
-			HANDLE handle;
-
-			handle = FindFirstFileW((WCHAR *) nativePath, &fData);
-			if (handle == INVALID_HANDLE_VALUE) {
-			    /*
-			     * This is usually the '/' in 'c:/' at end of
-			     * string.
-			     */
+			Tcl_DStringAppend(&dsNorm, (const char *) L"/",
+				sizeof(WCHAR));
+		    } else {
+			WCHAR *nativeName;
 
-			    Tcl_DStringAppend(&dsNorm, (const char *) L"/",
-				    sizeof(WCHAR));
+			if (fData.cFileName[0] != '\0') {
+			    nativeName = fData.cFileName;
 			} else {
-			    WCHAR *nativeName;
-
-			    if (fData.cFileName[0] != '\0') {
-				nativeName = fData.cFileName;
-			    } else {
-				nativeName = fData.cAlternateFileName;
-			    }
-			    FindClose(handle);
-			    Tcl_DStringAppend(&dsNorm, (const char *) L"/",
-				    sizeof(WCHAR));
-			    Tcl_DStringAppend(&dsNorm,
-				    (const char *) nativeName,
-				    (int) (wcslen(nativeName)*sizeof(WCHAR)));
+			    nativeName = fData.cAlternateFileName;
 			}
+			FindClose(handle);
+			Tcl_DStringAppend(&dsNorm, (const char *) L"/",
+				sizeof(WCHAR));
+			Tcl_DStringAppend(&dsNorm,
+				(const char *) nativeName,
+				(int) (wcslen(nativeName)*sizeof(WCHAR)));
 		    }
 		}
+	    }
 #endif /* !TclNORM_LONG_PATH */
-		Tcl_DStringFree(&ds);
-		lastValidPathEnd = currentPathEndPosition;
-		if (cur == 0) {
-		    break;
-		}
+	    Tcl_DStringFree(&ds);
+	    lastValidPathEnd = currentPathEndPosition;
+	    if (cur == 0) {
+		break;
+	    }
 
-		/*
-		 * If we get here, we've got past one directory delimiter, so
-		 * we know it is no longer a drive.
-		 */
+	    /*
+	     * If we get here, we've got past one directory delimiter, so
+	     * we know it is no longer a drive.
+	     */
 
-		isDrive = 0;
-	    }
-	    currentPathEndPosition++;
+	    isDrive = 0;
 	}
+	currentPathEndPosition++;
 
 #ifdef TclNORM_LONG_PATH
 	/*
@@ -3045,10 +2897,11 @@ ClientData
 TclNativeCreateNativeRep(
     Tcl_Obj *pathPtr)
 {
-    char *nativePathPtr, *str;
-    Tcl_DString ds;
+    WCHAR *nativePathPtr;
+    const char *str;
     Tcl_Obj *validPathPtr;
     int len;
+    WCHAR *wp;
 
     if (TclFSCwdIsNative()) {
 	/*
@@ -3074,22 +2927,72 @@ TclNativeCreateNativeRep(
     }
 
     str = Tcl_GetStringFromObj(validPathPtr, &len);
-    if (str[0] == '/' && str[1] == '/' && str[2] == '?' && str[3] == '/') {
-	char *p;
 
-	for (p = str; p && *p; ++p) {
-	    if (*p == '/') {
-		*p = '\\';
-	    }
+    if (strlen(str)!=len) {
+	/* String contains NUL-bytes. This is invalid. */
+	return 0;
+    }
+    /* Let MultiByteToWideChar check for other invalid sequences, like
+     * 0xC0 0x80 (== overlong NUL). See bug [3118489]: NUL in filenames */
+    len = MultiByteToWideChar(CP_UTF8, MB_ERR_INVALID_CHARS, str, -1, 0, 0);
+    if (len==0) {
+	return 0;
+    }
+    /* Overallocate 6 chars, making some room for extended paths */
+    wp = nativePathPtr = ckalloc( (len+6) * sizeof(WCHAR) );
+    if (nativePathPtr==0) {
+      return 0;
+    }
+    MultiByteToWideChar(CP_UTF8, MB_ERR_INVALID_CHARS, str, -1, nativePathPtr, len);
+    /*
+    ** If path starts with "//?/" or "\\?\" (extended path), translate
+    ** any slashes to backslashes but leave the '?' intact
+    */
+    if ((str[0]=='\\' || str[0]=='/') && (str[1]=='\\' || str[1]=='/')
+	    && str[2]=='?' && (str[3]=='\\' || str[3]=='/')) {
+	wp[0] = wp[1] = wp[3] = '\\';
+	str += 4;
+	wp += 4;
+    }
+    /*
+    ** If there is no "\\?\" prefix but there is a drive or UNC
+    ** path prefix and the path is larger than MAX_PATH chars,
+    ** no Win32 API function can handle that unless it is
+    ** prefixed with the extended path prefix. See:
+    ** <http://msdn.microsoft.com/en-us/library/aa365247(VS.85).aspx#maxpath>
+    **/
+    if (((str[0]>='A'&&str[0]<='Z') || (str[0]>='a'&&str[0]<='z'))
+	    && str[1]==':' && (str[2]=='\\' || str[2]=='/')) {
+	if (wp==nativePathPtr && len>MAX_PATH) {
+	    memmove(wp+4, wp, len*sizeof(WCHAR));
+	    memcpy(wp, L"\\\\?\\", 4*sizeof(WCHAR));
+	    wp += 4;
 	}
+	/*
+	 ** If (remainder of) path starts with "<drive>:/" or "<drive>:\",
+	 ** leave the ':' intact but translate the backslash to a slash.
+	 */
+	wp[2] = '\\';
+	wp += 3;
+    } else if (wp==nativePathPtr && len>MAX_PATH
+	    && (str[0]=='\\' || str[0]=='/')
+	    && (str[1]=='\\' || str[1]=='/') && str[2]!='?') {
+	memmove(wp+6, wp, len*sizeof(WCHAR));
+	memcpy(wp, L"\\\\?\\UNC", 7*sizeof(WCHAR));
+	wp += 7;
+    }
+    /*
+    ** In the remainder of the path, translate invalid characters to
+    ** characters in the Unicode private use area.
+    */
+    while (*wp != '\0') {
+	if ((*wp < ' ') || wcschr(L"\"*:<>?|", *wp)) {
+	    *wp |= 0xF000;
+	} else if (*wp == '/') {
+	    *wp = '\\';
+	}
+	++wp;
     }
-    Tcl_WinUtfToTChar(str, len, &ds);
-    len = Tcl_DStringLength(&ds) + sizeof(WCHAR);
-    Tcl_DecrRefCount(validPathPtr);
-    nativePathPtr = ckalloc(len);
-    memcpy(nativePathPtr, Tcl_DStringValue(&ds), (size_t) len);
-
-    Tcl_DStringFree(&ds);
     return nativePathPtr;
 }
 
diff --git a/win/tclWinInit.c b/win/tclWinInit.c
index d89c98e..8b600f6 100644
--- a/win/tclWinInit.c
+++ b/win/tclWinInit.c
@@ -101,6 +101,10 @@ static TclInitProcessGlobalValueProc	InitializeDefaultLibraryDir;
 static ProcessGlobalValue defaultLibraryDir =
 	{0, 0, NULL, NULL, InitializeDefaultLibraryDir, NULL, NULL};
 
+static TclInitProcessGlobalValueProc	InitializeSourceLibraryDir;
+static ProcessGlobalValue sourceLibraryDir =
+	{0, 0, NULL, NULL, InitializeSourceLibraryDir, NULL, NULL};
+
 static void		AppendEnvironment(Tcl_Obj *listPtr, const char *lib);
 static int		ToUtf(const WCHAR *wSrc, char *dst);
 
@@ -109,8 +113,8 @@ static int		ToUtf(const WCHAR *wSrc, char *dst);
  *
  * TclpInitPlatform --
  *
- *	Initialize all the platform-dependant things like signals and
- *	floating-point error handling.
+ *	Initialize all the platform-dependant things like signals,
+ *	floating-point error handling and sockets.
  *
  *	Called at process initialization time.
  *
@@ -126,20 +130,16 @@ static int		ToUtf(const WCHAR *wSrc, char *dst);
 void
 TclpInitPlatform(void)
 {
+    WSADATA wsaData;
+    WORD wVersionRequested = MAKEWORD(2, 2);
+
     tclPlatform = TCL_PLATFORM_WINDOWS;
 
     /*
-     * The following code stops Windows 3.X and Windows NT 3.51 from
-     * automatically putting up Sharing Violation dialogs, e.g, when someone
-     * tries to access a file that is locked or a drive with no disk in it.
-     * Tcl already returns the appropriate error to the caller, and they can
-     * decide to put up their own dialog in response to that failure.
-     *
-     * Under 95 and NT 4.0, this is a NOOP because the system doesn't
-     * automatically put up dialogs when the above operations fail.
+     * Initialize the winsock library. On Windows XP and higher this
+     * can never fail.
      */
-
-    SetErrorMode(SetErrorMode(0) | SEM_FAILCRITICALERRORS);
+    WSAStartup(wVersionRequested, &wsaData);
 
 #ifdef STATIC_BUILD
     /*
@@ -175,7 +175,7 @@ TclpInitLibraryPath(
     int *lengthPtr,
     Tcl_Encoding *encodingPtr)
 {
-#define LIBRARY_SIZE	    32
+#define LIBRARY_SIZE	    64
     Tcl_Obj *pathPtr;
     char installLib[LIBRARY_SIZE];
     const char *bytes;
@@ -206,6 +206,13 @@ TclpInitLibraryPath(
     Tcl_ListObjAppendElement(NULL, pathPtr,
 	    TclGetProcessGlobalValue(&defaultLibraryDir));
 
+    /*
+     * Look for the library in its source checkout location.
+     */
+
+    Tcl_ListObjAppendElement(NULL, pathPtr,
+	    TclGetProcessGlobalValue(&sourceLibraryDir));
+
     *encodingPtr = NULL;
     bytes = Tcl_GetStringFromObj(pathPtr, lengthPtr);
     *valuePtr = ckalloc((*lengthPtr) + 1);
@@ -360,6 +367,57 @@ InitializeDefaultLibraryDir(
 /*
  *---------------------------------------------------------------------------
  *
+ * InitializeSourceLibraryDir --
+ *
+ *	Locate the Tcl script library default location relative to the
+ *	location of the Tcl DLL as it exists in the build output directory
+ *	associated with the source checkout.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	None.
+ *
+ *---------------------------------------------------------------------------
+ */
+
+static void
+InitializeSourceLibraryDir(
+    char **valuePtr,
+    int *lengthPtr,
+    Tcl_Encoding *encodingPtr)
+{
+    HMODULE hModule = TclWinGetTclInstance();
+    WCHAR wName[MAX_PATH + LIBRARY_SIZE];
+    char name[(MAX_PATH + LIBRARY_SIZE) * TCL_UTF_MAX];
+    char *end, *p;
+
+    if (GetModuleFileNameW(hModule, wName, MAX_PATH) == 0) {
+	GetModuleFileNameA(hModule, name, MAX_PATH);
+    } else {
+	ToUtf(wName, name);
+    }
+
+    end = strrchr(name, '\\');
+    *end = '\0';
+    p = strrchr(name, '\\');
+    if (p != NULL) {
+	end = p;
+    }
+    *end = '\\';
+
+    TclWinNoBackslash(name);
+    sprintf(end + 1, "../library");
+    *lengthPtr = strlen(name);
+    *valuePtr = ckalloc(*lengthPtr + 1);
+    *encodingPtr = NULL;
+    memcpy(*valuePtr, name, (size_t) *lengthPtr + 1);
+}
+
+/*
+ *---------------------------------------------------------------------------
+ *
  * ToUtf --
  *
  *	Convert a char string to a UTF string.
@@ -424,13 +482,10 @@ TclpSetInitialEncodings(void)
     Tcl_DStringFree(&encodingName);
 }
 
-void
-TclpSetInterfaces(void)
+void TclWinSetInterfaces(
+    int dummy)			/* Not used. */
 {
-    int useWide;
-
-    useWide = (TclWinGetPlatformId() != VER_PLATFORM_WIN32_WINDOWS);
-    TclWinSetInterfaces(useWide);
+    TclpSetInterfaces();
 }
 
 const char *
@@ -471,7 +526,8 @@ TclpSetVariables(
 	SYSTEM_INFO info;
 	OemId oemId;
     } sys;
-    OSVERSIONINFOA osInfo;
+    static OSVERSIONINFOW osInfo;
+    static int osInfoInitialized = 0;
     Tcl_DString ds;
     TCHAR szUserName[UNLEN+1];
     DWORD cchUserNameLen = UNLEN;
@@ -479,9 +535,19 @@ TclpSetVariables(
     Tcl_SetVar2Ex(interp, "tclDefaultLibrary", NULL,
 	    TclGetProcessGlobalValue(&defaultLibraryDir), TCL_GLOBAL_ONLY);
 
-    osInfo.dwOSVersionInfoSize = sizeof(OSVERSIONINFOA);
-    GetVersionExA(&osInfo);
-
+    if (!osInfoInitialized) {
+	HANDLE handle = LoadLibraryW(L"NTDLL");
+	int(__stdcall *getversion)(void *) =
+		(int(__stdcall *)(void *)) GetProcAddress(handle, "RtlGetVersion");
+	osInfo.dwOSVersionInfoSize = sizeof(OSVERSIONINFOW);
+	if (!getversion || getversion(&osInfo)) {
+	    GetVersionExW(&osInfo);
+	}
+	if (handle) {
+		FreeLibrary(handle);
+	}
+	osInfoInitialized = 1;
+    }
     GetSystemInfo(&sys.info);
 
     /*
diff --git a/win/tclWinInt.h b/win/tclWinInt.h
index 22ad8e9..9df424f 100644
--- a/win/tclWinInt.h
+++ b/win/tclWinInt.h
@@ -14,6 +14,23 @@
 
 #include "tclInt.h"
 
+#ifdef HAVE_NO_SEH
+/*
+ * Unlike Borland and Microsoft, we don't register exception handlers by
+ * pushing registration records onto the runtime stack. Instead, we register
+ * them by creating an TCLEXCEPTION_REGISTRATION within the activation record.
+ */
+
+typedef struct TCLEXCEPTION_REGISTRATION {
+    struct TCLEXCEPTION_REGISTRATION *link;
+    EXCEPTION_DISPOSITION (*handler)(
+	    struct _EXCEPTION_RECORD*, void*, struct _CONTEXT*, void*);
+    void *ebp;
+    void *esp;
+    int status;
+} TCLEXCEPTION_REGISTRATION;
+#endif
+
 /*
  * Some versions of Borland C have a define for the OSVERSIONINFO for
  * Win32s and for NT, but not for Windows 95.
@@ -33,12 +50,6 @@
 #         define TCL_I_MODIFIER        ""
 #endif
 
-#ifdef _WIN64
-#         define TCL_I_MODIFIER        "I"
-#else
-#         define TCL_I_MODIFIER        ""
-#endif
-
 /*
  * Declarations of functions that are not accessible by way of the
  * stubs table.
@@ -55,7 +66,7 @@ MODULE_SCOPE Tcl_Channel TclWinOpenFileChannel(HANDLE handle, char *channelName,
 			    int permissions, int appendMode);
 MODULE_SCOPE Tcl_Channel TclWinOpenSerialChannel(HANDLE handle,
 			    char *channelName, int permissions);
-MODULE_SCOPE HANDLE	TclWinSerialReopen(HANDLE handle, const TCHAR *name,
+MODULE_SCOPE HANDLE	TclWinSerialOpen(HANDLE handle, const TCHAR *name,
 			    DWORD access);
 MODULE_SCOPE int	TclWinSymLinkCopyDirectory(const TCHAR *LinkOriginal,
 			    const TCHAR *LinkCopy);
diff --git a/win/tclWinLoad.c b/win/tclWinLoad.c
index 6294086..3e11224 100644
--- a/win/tclWinLoad.c
+++ b/win/tclWinLoad.c
@@ -57,10 +57,11 @@ TclpDlopen(
     Tcl_LoadHandle *loadHandle,	/* Filled with token for dynamically loaded
 				 * file which will be passed back to
 				 * (*unloadProcPtr)() to unload the file. */
-    Tcl_FSUnloadFileProc **unloadProcPtr)
+    Tcl_FSUnloadFileProc **unloadProcPtr,
 				/* Filled with address of Tcl_FSUnloadFileProc
 				 * function which should be used for this
 				 * file. */
+    int flags)
 {
     HINSTANCE hInstance;
     const TCHAR *nativeName;
diff --git a/win/tclWinPipe.c b/win/tclWinPipe.c
index 36ae58a..a9eec6d 100644
--- a/win/tclWinPipe.c
+++ b/win/tclWinPipe.c
@@ -12,8 +12,6 @@
 
 #include "tclWinInt.h"
 
-#include <sys/stat.h>
-
 /*
  * The following variable is used to tell whether this module has been
  * initialized.
@@ -84,6 +82,12 @@ static ProcInfo *procList;
 #define PIPE_EXTRABYTE	(1<<3)	/* The reader thread has consumed one byte. */
 
 /*
+ * TODO: It appears the whole EXTRABYTE machinery is in place to support
+ * outdated Win 95 systems.  If this can be confirmed, much code can be
+ * deleted.
+ */
+
+/*
  * This structure describes per-instance data for a pipe based channel.
  */
 
@@ -1051,15 +1055,8 @@ TclpCreateProcess(
 	 * sink.
 	 */
 
-	if ((TclWinGetPlatformId() == VER_PLATFORM_WIN32_WINDOWS)
-		&& (applType == APPL_DOS)) {
-	    if (CreatePipe(&h, &startInfo.hStdOutput, &secAtts, 0) != FALSE) {
-		CloseHandle(h);
-	    }
-	} else {
-	    startInfo.hStdOutput = CreateFileA("NUL:", GENERIC_WRITE, 0,
-		    &secAtts, OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
-	}
+	startInfo.hStdOutput = CreateFile(TEXT("NUL:"), GENERIC_WRITE, 0,
+		&secAtts, OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
     } else {
 	DuplicateHandle(hProcess, outputHandle, hProcess,
 		&startInfo.hStdOutput, 0, TRUE, DUPLICATE_SAME_ACCESS);
@@ -1078,7 +1075,7 @@ TclpCreateProcess(
 	 * sink.
 	 */
 
-	startInfo.hStdError = CreateFileA("NUL:", GENERIC_WRITE, 0,
+	startInfo.hStdError = CreateFile(TEXT("NUL:"), GENERIC_WRITE, 0,
 		&secAtts, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
     } else {
 	DuplicateHandle(hProcess, errorHandle, hProcess, &startInfo.hStdError,
@@ -1893,7 +1890,7 @@ PipeClose2Proc(
 		SetEvent(pipePtr->stopWriter);
 
 		if (WaitForSingleObject(pipePtr->writable, 0) == WAIT_TIMEOUT) {
-		    return EAGAIN;
+		    return EWOULDBLOCK;
 		}
 
 	    } else {
@@ -2170,7 +2167,7 @@ PipeOutputProc(
 	 * the channel is in non-blocking mode.
 	 */
 
-	errno = EAGAIN;
+	errno = EWOULDBLOCK;
 	goto error;
     }
 
@@ -2721,7 +2718,7 @@ WaitForRead(
 	     * is in non-blocking mode.
 	     */
 
-	    errno = EAGAIN;
+	    errno = EWOULDBLOCK;
 	    return -1;
 	}
 
diff --git a/win/tclWinPort.h b/win/tclWinPort.h
index c6ac2b7..652cd06 100644
--- a/win/tclWinPort.h
+++ b/win/tclWinPort.h
@@ -82,6 +82,7 @@ typedef DWORD_PTR * PDWORD_PTR;
  *---------------------------------------------------------------------------
  */
 
+#include <time.h>
 #include <wchar.h>
 #include <io.h>
 #include <errno.h>
@@ -92,11 +93,9 @@ typedef DWORD_PTR * PDWORD_PTR;
 #include <signal.h>
 #include <limits.h>
 
-#ifndef strncasecmp
-#   define strncasecmp strnicmp
-#endif
-#ifndef strcasecmp
-#   define strcasecmp stricmp
+#ifndef __GNUC__
+#    define strncasecmp _strnicmp
+#    define strcasecmp _stricmp
 #endif
 
 /*
@@ -114,8 +113,6 @@ typedef DWORD_PTR * PDWORD_PTR;
 #   endif /* __BORLANDC__ */
 #endif /* __MWERKS__ */
 
-#include <time.h>
-
 /*
  * The following defines redefine the Windows Socket errors as
  * BSD errors so Tcl_PosixError can do the right thing.
@@ -469,11 +466,12 @@ typedef DWORD_PTR * PDWORD_PTR;
  * including the *printf family and others. Tell it to shut up.
  * (_MSC_VER is 1200 for VC6, 1300 or 1310 for vc7.net, 1400 for 8.0)
  */
-#if _MSC_VER >= 1400
-#pragma warning(disable:4996)
+#if defined(_MSC_VER) && (_MSC_VER >= 1400)
+#   pragma warning(disable:4244)
+#   pragma warning(disable:4267)
+#   pragma warning(disable:4996)
 #endif
 
-
 /*
  *---------------------------------------------------------------------------
  * The following macros and declarations represent the interface between
@@ -530,16 +528,6 @@ typedef DWORD_PTR * PDWORD_PTR;
 #define TclpSysRealloc(ptr, size)	((void*)HeapReAlloc(GetProcessHeap(), \
 					    (DWORD)0, (LPVOID)ptr, (DWORD)size))
 
-/*
- * The following defines map from standard socket names to our internal
- * wrappers that redirect through the winSock function table (see the
- * file tclWinSock.c).
- */
-
-#define getservbyname	TclWinGetServByName
-#define getsockopt	TclWinGetSockOpt
-#define ntohs		TclWinNToHS
-#define setsockopt	TclWinSetSockOpt
 /* This type is not defined in the Windows headers */
 #define socklen_t       int
 
diff --git a/win/tclWinReg.c b/win/tclWinReg.c
index 6ac5caf..327e4a3 100644
--- a/win/tclWinReg.c
+++ b/win/tclWinReg.c
@@ -13,9 +13,9 @@
  */
 
 #undef STATIC_BUILD
-#undef USE_TCL_STUBS
-#define USE_TCL_STUBS
-
+#ifndef USE_TCL_STUBS
+#   define USE_TCL_STUBS
+#endif
 #include "tclInt.h"
 #ifdef _MSC_VER
 #   pragma comment (lib, "advapi32.lib")
diff --git a/win/tclWinSerial.c b/win/tclWinSerial.c
index 9e9d1af..6487fe4 100644
--- a/win/tclWinSerial.c
+++ b/win/tclWinSerial.c
@@ -14,8 +14,6 @@
 
 #include "tclWinInt.h"
 
-#include <sys/stat.h>
-
 /*
  * The following variable is used to tell whether this module has been
  * initialized.
@@ -376,7 +374,7 @@ SerialGetMilliseconds(void)
 {
     Tcl_Time time;
 
-    TclpGetTime(&time);
+    Tcl_GetTime(&time);
 
     return (time.sec * 1000 + time.usec / 1000);
 }
@@ -934,7 +932,7 @@ SerialInputProc(
 		    bufSize = cStat.cbInQue;
 		}
 	    } else {
-		errno = *errorCode = EAGAIN;
+		errno = *errorCode = EWOULDBLOCK;
 		return -1;
 	    }
 	} else {
@@ -1036,7 +1034,7 @@ SerialOutputProc(
 	 * the channel is in non-blocking mode.
 	 */
 
-	errno = EAGAIN;
+	errno = EWOULDBLOCK;
 	goto error1;
     }
 
@@ -1412,23 +1410,22 @@ SerialWriterThread(
 /*
  *----------------------------------------------------------------------
  *
- * TclWinSerialReopen --
+ * TclWinSerialOpen --
  *
- *	Reopens the serial port with the OVERLAPPED FLAG set
+ *	Opens or Reopens the serial port with the OVERLAPPED FLAG set
  *
  * Results:
- *	Returns the new handle, or INVALID_HANDLE_VALUE. Normally there
- *	shouldn't be any error, because the same channel has previously been
- *	succeesfully opened.
+ *	Returns the new handle, or INVALID_HANDLE_VALUE. 
+ *	If an existing channel is specified it is closed and reopened.
  *
  * Side effects:
- *	May close the original handle
+ *	May close/reopen the original handle
  *
  *----------------------------------------------------------------------
  */
 
 HANDLE
-TclWinSerialReopen(
+TclWinSerialOpen(
     HANDLE handle,
     const TCHAR *name,
     DWORD access)
@@ -1436,16 +1433,22 @@ TclWinSerialReopen(
     SerialInit();
 
     /*
+     * If an open channel is specified, close it
+     */
+
+    if ( handle != INVALID_HANDLE_VALUE && CloseHandle(handle) == FALSE) {
+	return INVALID_HANDLE_VALUE;
+    }
+
+    /*
      * Multithreaded I/O needs the overlapped flag set otherwise
      * ClearCommError blocks under Windows NT/2000 until serial output is
      * finished
      */
 
-    if (CloseHandle(handle) == FALSE) {
-	return INVALID_HANDLE_VALUE;
-    }
     handle = CreateFile(name, access, 0, 0, OPEN_EXISTING,
 	    FILE_FLAG_OVERLAPPED, 0);
+
     return handle;
 }
 
diff --git a/win/tclWinSock.c b/win/tclWinSock.c
index 9f7caee..3990111 100644
--- a/win/tclWinSock.c
+++ b/win/tclWinSock.c
@@ -47,13 +47,6 @@
 
 #include "tclWinInt.h"
 
-/*
- * Which version of the winsock API do we want?
- */
-
-#define WSA_VERSION_MAJOR	1
-#define WSA_VERSION_MINOR	1
-
 #ifdef _MSC_VER
 #   pragma comment (lib, "ws2_32")
 #endif
@@ -72,7 +65,6 @@
 
 #undef getservbyname
 #undef getsockopt
-#undef ntohs
 #undef setsockopt
 
 /*
@@ -163,7 +155,7 @@ struct SocketInfo {
  * socket event occurs.
  */
 
-typedef struct SocketEvent {
+typedef struct {
     Tcl_Event header;		/* Information that is standard for all
 				 * events. */
     SOCKET socket;		/* Socket descriptor that is ready. Used to
@@ -191,7 +183,7 @@ typedef struct SocketEvent {
 #define SOCKET_PENDING		(1<<3)	/* A message has been sent for this
 					 * socket */
 
-typedef struct ThreadSpecificData {
+typedef struct {
     HWND hwnd;			/* Handle to window for socket messages. */
     HANDLE socketThread;	/* Thread handling the window */
     Tcl_ThreadId threadId;	/* Parent thread. */
@@ -288,8 +280,7 @@ static const Tcl_ChannelType tcpChannelType = {
 static void
 InitSockets(void)
 {
-    DWORD id, err;
-    WSADATA wsaData;
+    DWORD id;
     ThreadSpecificData *tsdPtr = TclThreadDataKeyGet(&dataKey);
 
     if (!initialized) {
@@ -318,32 +309,6 @@ InitSockets(void)
 	    TclWinConvertError(GetLastError());
 	    goto initFailure;
 	}
-
-	/*
-	 * Initialize the winsock library and check the interface version
-	 * actually loaded. We only ask for the 1.1 interface and do require
-	 * that it not be less than 1.1.
-	 */
-
-	err = WSAStartup((WORD) MAKEWORD(WSA_VERSION_MAJOR,WSA_VERSION_MINOR),
-		&wsaData);
-	if (err != 0) {
-	    TclWinConvertError(err);
-	    goto initFailure;
-	}
-
-	/*
-	 * Note the byte positions ae swapped for the comparison, so that
-	 * 0x0002 (2.0, MAKEWORD(2,0)) doesn't look less than 0x0101 (1.1). We
-	 * want the comparison to be 0x0200 < 0x0101.
-	 */
-
-	if (MAKEWORD(HIBYTE(wsaData.wVersion), LOBYTE(wsaData.wVersion))
-		< MAKEWORD(WSA_VERSION_MINOR, WSA_VERSION_MAJOR)) {
-	    TclWinConvertError(WSAVERNOTSUPPORTED);
-	    WSACleanup();
-	    goto initFailure;
-	}
     }
 
     /*
@@ -460,7 +425,6 @@ SocketExitHandler(
 
     TclpFinalizeSockets();
     UnregisterClass(classname, TclWinGetTclInstance());
-    WSACleanup();
     initialized = 0;
     Tcl_MutexUnlock(&socketMutex);
 }
@@ -1317,8 +1281,9 @@ CreateSocket(
 
 		if (connect(sock, addrPtr->ai_addr, addrPtr->ai_addrlen)
 			== SOCKET_ERROR) {
-		    TclWinConvertError((DWORD) WSAGetLastError());
-		    if (Tcl_GetErrno() != EAGAIN) {
+		    DWORD error = (DWORD) WSAGetLastError();
+		    if (error != WSAEWOULDBLOCK) {
+			TclWinConvertError(error);
 			goto looperror;
 		    }
 
@@ -1359,10 +1324,10 @@ CreateSocket(
     }
 
   error:
-    if (addrlist == NULL) {
+    if (addrlist != NULL) {
 	freeaddrinfo(addrlist);
     }
-    if (myaddrlist == NULL) {
+    if (myaddrlist != NULL) {
 	freeaddrinfo(myaddrlist);
     }
 
@@ -1441,7 +1406,7 @@ WaitForSocketEvent(
 	} else if (infoPtr->readyEvents & events) {
 	    break;
 	} else if (infoPtr->flags & SOCKET_ASYNC) {
-	    *errorCodePtr = EAGAIN;
+	    *errorCodePtr = EWOULDBLOCK;
 	    result = 0;
 	    break;
 	}
@@ -1926,7 +1891,7 @@ TcpOutputProc(
 	if (error == WSAEWOULDBLOCK) {
 	    infoPtr->readyEvents &= ~(FD_WRITE);
 	    if (infoPtr->flags & SOCKET_ASYNC) {
-		*errorCodePtr = EAGAIN;
+		*errorCodePtr = EWOULDBLOCK;
 		bytesWritten = -1;
 		break;
 	    }
@@ -2449,7 +2414,7 @@ SocketThread(
  *
  * Side effects:
  *	The flags for the given socket are updated to reflect the event that
- *	occured.
+ *	occurred.
  *
  *----------------------------------------------------------------------
  */
@@ -2694,6 +2659,7 @@ InitializeHostName(
  *----------------------------------------------------------------------
  */
 
+#undef TclWinGetSockOpt
 int
 TclWinGetSockOpt(
     SOCKET s,
@@ -2702,19 +2668,10 @@ TclWinGetSockOpt(
     char *optval,
     int *optlen)
 {
-    /*
-     * Check that WinSock is initialized; do not call it if not, to prevent
-     * system crashes. This can happen at exit time if the exit handler for
-     * WinSock ran before other exit handlers that want to use sockets.
-     */
-
-    if (!SocketsEnabled()) {
-	return SOCKET_ERROR;
-    }
-
     return getsockopt(s, level, optname, optval, optlen);
 }
 
+#undef TclWinSetSockOpt
 int
 TclWinSetSockOpt(
     SOCKET s,
@@ -2723,68 +2680,23 @@ TclWinSetSockOpt(
     const char *optval,
     int optlen)
 {
-    /*
-     * Check that WinSock is initialized; do not call it if not, to prevent
-     * system crashes. This can happen at exit time if the exit handler for
-     * WinSock ran before other exit handlers that want to use sockets.
-     */
-
-    if (!SocketsEnabled()) {
-	return SOCKET_ERROR;
-    }
-
     return setsockopt(s, level, optname, optval, optlen);
 }
 
-unsigned short
-TclWinNToHS(
-    unsigned short netshort)
-{
-    /*
-     * Check that WinSock is initialized; do not call it if not, to prevent
-     * system crashes. This can happen at exit time if the exit handler for
-     * WinSock ran before other exit handlers that want to use sockets.
-     */
-
-    if (!SocketsEnabled()) {
-	return (unsigned short) -1;
-    }
-
-    return ntohs(netshort);
-}
-
+#undef TclpInetNtoa
 char *
 TclpInetNtoa(
     struct in_addr addr)
 {
-    /*
-     * Check that WinSock is initialized; do not call it if not, to prevent
-     * system crashes. This can happen at exit time if the exit handler for
-     * WinSock ran before other exit handlers that want to use sockets.
-     */
-
-    if (!SocketsEnabled()) {
-        return NULL;
-    }
-
     return inet_ntoa(addr);
 }
 
+#undef TclWinGetServByName
 struct servent *
 TclWinGetServByName(
     const char *name,
     const char *proto)
 {
-    /*
-     * Check that WinSock is initialized; do not call it if not, to prevent
-     * system crashes. This can happen at exit time if the exit handler for
-     * WinSock ran before other exit handlers that want to use sockets.
-     */
-
-    if (!SocketsEnabled()) {
-	return NULL;
-    }
-
     return getservbyname(name, proto);
 }
 
diff --git a/win/tclWinTest.c b/win/tclWinTest.c
index 136c4db..6027e32 100644
--- a/win/tclWinTest.c
+++ b/win/tclWinTest.c
@@ -17,7 +17,7 @@
 /*
  * For TestplatformChmod on Windows
  */
-#ifdef __WIN32__
+#ifdef _WIN32
 #include <aclapi.h>
 #endif
 
@@ -211,7 +211,7 @@ TestvolumetypeCmd(
 	TclWinConvertError(GetLastError());
 	return TCL_ERROR;
     }
-    Tcl_SetResult(interp, volType, TCL_VOLATILE);
+    Tcl_AppendResult(interp, volType, NULL);
     return TCL_OK;
 #undef VOL_BUF_SIZE
 }
diff --git a/win/tclWinThrd.c b/win/tclWinThrd.c
index 102fd40..1c9d483 100644
--- a/win/tclWinThrd.c
+++ b/win/tclWinThrd.c
@@ -13,7 +13,15 @@
 
 #include "tclWinInt.h"
 
-#include <sys/stat.h>
+#include <float.h>
+
+/* Workaround for mingw versions which don't provide this in float.h */
+#ifndef _MCW_EM
+#   define	_MCW_EM		0x0008001F	/* Error masks */
+#   define	_MCW_RC		0x00000300	/* Rounding */
+#   define	_MCW_PC		0x00030000	/* Precision */
+_CRTIMP unsigned int __cdecl _controlfp (unsigned int unNew, unsigned int unMask);
+#endif
 
 /*
  * This is the master lock used to serialize access to other serialization
@@ -124,6 +132,66 @@ typedef struct allocMutex {
 #endif /* USE_THREAD_ALLOC */
 
 /*
+ * The per thread data passed from TclpThreadCreate
+ * to TclWinThreadStart.
+ */
+
+typedef struct WinThread {
+  LPTHREAD_START_ROUTINE lpStartAddress; /* Original startup routine */
+  LPVOID lpParameter;		/* Original startup data */
+  unsigned int fpControl;	/* Floating point control word from the
+				 * main thread */
+} WinThread;
+
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclWinThreadStart --
+ *
+ *	This procedure is the entry point for all new threads created
+ *	by Tcl on Windows.
+ *
+ * Results:
+ *	Various, depending on the result of the wrapped thread start
+ *	routine.
+ *
+ * Side effects:
+ *	Arbitrary, since user code is executed.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static DWORD WINAPI
+TclWinThreadStart(
+    LPVOID lpParameter)		/* The WinThread structure pointer passed
+				 * from TclpThreadCreate */
+{
+    WinThread *winThreadPtr = (WinThread *) lpParameter;
+    unsigned int fpmask;
+    LPTHREAD_START_ROUTINE lpOrigStartAddress;
+    LPVOID lpOrigParameter;
+
+    if (!winThreadPtr) {
+	return TCL_ERROR;
+    }
+
+    fpmask = _MCW_EM | _MCW_RC | _MCW_PC;
+
+#if defined(_MSC_VER) && _MSC_VER >= 1200
+    fpmask |= _MCW_DN;
+#endif
+
+    _controlfp(winThreadPtr->fpControl, fpmask);
+
+    lpOrigStartAddress = winThreadPtr->lpStartAddress;
+    lpOrigParameter = winThreadPtr->lpParameter;
+
+    ckfree((char *)winThreadPtr);
+    return lpOrigStartAddress(lpOrigParameter);
+}
+
+/*
  *----------------------------------------------------------------------
  *
  * TclpThreadCreate --
@@ -149,8 +217,14 @@ TclpThreadCreate(
     int flags)			/* Flags controlling behaviour of the new
 				 * thread. */
 {
+    WinThread *winThreadPtr;		/* Per-thread startup info */
     HANDLE tHandle;
 
+    winThreadPtr = (WinThread *)ckalloc(sizeof(WinThread));
+    winThreadPtr->lpStartAddress = (LPTHREAD_START_ROUTINE) proc;
+    winThreadPtr->lpParameter = clientData;
+    winThreadPtr->fpControl = _controlfp(0, 0);
+
     EnterCriticalSection(&joinLock);
 
     *idPtr = 0; /* must initialize as Tcl_Thread is a pointer and
@@ -158,12 +232,12 @@ TclpThreadCreate(
 		 */
 
 #if defined(_MSC_VER) || defined(__MSVCRT__) || defined(__BORLANDC__)
-    tHandle = (HANDLE) _beginthreadex(NULL, (unsigned) stackSize, proc,
-	    clientData, 0, (unsigned *)idPtr);
+    tHandle = (HANDLE) _beginthreadex(NULL, (unsigned) stackSize,
+	    (Tcl_ThreadCreateProc*) TclWinThreadStart, winThreadPtr,
+	    0, (unsigned *)idPtr);
 #else
     tHandle = CreateThread(NULL, (DWORD) stackSize,
-	    (LPTHREAD_START_ROUTINE) proc, (LPVOID) clientData,
-	    (DWORD) 0, (LPDWORD)idPtr);
+	    TclWinThreadStart, winThreadPtr, 0, (LPDWORD)idPtr);
 #endif
 
     if (tHandle == NULL) {
diff --git a/win/tclWinTime.c b/win/tclWinTime.c
index daa229d..7045c72 100644
--- a/win/tclWinTime.c
+++ b/win/tclWinTime.c
@@ -280,7 +280,7 @@ NativeGetTime(
     Tcl_Time *timePtr,
     ClientData clientData)
 {
-    struct timeb t;
+    struct _timeb t;
     int useFtime = 1;		/* Flag == TRUE if we need to fall back on
 				 * ftime rather than using the perf counter. */
 
@@ -446,7 +446,7 @@ NativeGetTime(
 	 * High resolution timer is not available. Just use ftime.
 	 */
 
-	ftime(&t);
+	_ftime(&t);
 	timePtr->sec = (long)t.time;
 	timePtr->usec = t.millitm * 1000;
     }
diff --git a/win/tclooConfig.sh b/win/tclooConfig.sh
index 68de106..08cc4c5 100644
--- a/win/tclooConfig.sh
+++ b/win/tclooConfig.sh
@@ -15,5 +15,5 @@ TCLOO_LIB_SPEC=""
 TCLOO_STUB_LIB_SPEC=""
 TCLOO_INCLUDE_SPEC=""
 TCLOO_PRIVATE_INCLUDE_SPEC=""
-TCLOO_CFLAGS=-DUSE_TCLOO_STUBS
-TCLOO_VERSION=0.6.3
+TCLOO_CFLAGS=""
+TCLOO_VERSION=1.0.1
diff --git a/win/tclsh.exe.manifest.in b/win/tclsh.exe.manifest.in
new file mode 100644
index 0000000..aaa34e1
--- /dev/null
+++ b/win/tclsh.exe.manifest.in
@@ -0,0 +1,33 @@
+<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
+<assembly xmlns="urn:schemas-microsoft-com:asm.v1" manifestVersion="1.0"
+	xmlns:asmv3="urn:schemas-microsoft-com:asm.v3">
+    <assemblyIdentity
+	    version="@TCL_WIN_VERSION@"
+	    processorArchitecture="@MACHINE@"
+	    name="Tcl.tclsh"
+	    type="win32"
+	/>
+    <description>Tcl command line shell (tclsh)</description>
+    <trustInfo xmlns="urn:schemas-microsoft-com:asm.v3">
+	<security>
+	    <requestedPrivileges>
+		<requestedExecutionLevel
+			level="asInvoker"
+			uiAccess="false"
+		    />
+	    </requestedPrivileges>
+	</security>
+    </trustInfo>
+    <compatibility xmlns="urn:schemas-microsoft-com:compatibility.v1">
+	<application>
+	    <!-- Windows 8.1 -->
+	    <supportedOS Id="{1f676c76-80e1-4239-95bb-83d0f6d0da78}"/>
+	    <!-- Windows 8 -->
+	    <supportedOS Id="{4a2f28e3-53b9-4441-ba9c-d69d4a4a6e38}"/>
+	    <!-- Windows 7 -->
+	    <supportedOS Id="{35138b9a-5d96-4fbd-8e2d-a2440225f93a}"/>
+	    <!-- Windows Vista -->
+	    <supportedOS Id="{e2011457-1546-43c5-a5fe-008deee3d3f0}"/>
+	</application>
+    </compatibility>
+</assembly>
diff --git a/win/tclsh.rc b/win/tclsh.rc
index 16eaf83..161da50 100644
--- a/win/tclsh.rc
+++ b/win/tclsh.rc
@@ -1,3 +1,4 @@
+//
 // Version Resource Script
 //
 
@@ -67,3 +68,15 @@ END
 //
 
 tclsh                      ICON    DISCARDABLE     "tclsh.ico"
+
+//
+// This is needed for Windows 8.1 onwards.
+//
+
+#ifndef RT_MANIFEST
+#define RT_MANIFEST     24
+#endif
+#ifndef CREATEPROCESS_MANIFEST_RESOURCE_ID
+#define CREATEPROCESS_MANIFEST_RESOURCE_ID 1
+#endif
+CREATEPROCESS_MANIFEST_RESOURCE_ID RT_MANIFEST "tclsh.exe.manifest"