# -*- tcl -*-
# Functionality covered: operation of all IO commands, and all procedures
# defined in generic/tclIO.c.
#
# This file contains a collection of tests for one or more of the Tcl built-in
# commands. Sourcing this file into Tcl runs the tests and generates output
# for errors. No output means no errors were found.
#
# Copyright (c) 1991-1994 The Regents of the University of California.
# Copyright (c) 1994-1997 Sun Microsystems, Inc.
# Copyright (c) 1998-1999 by Scriptics Corporation.
#
# See the file "license.terms" for information on usage and redistribution of
# this file, and for a DISCLAIMER OF ALL WARRANTIES.

if {[lsearch [namespace children] ::tcltest] == -1} {
    package require tcltest 2
    namespace import -force ::tcltest::*
}

::tcltest::loadTestedCommands
catch [list package require -exact Tcltest [info patchlevel]]

testConstraint testbytestring [llength [info commands testbytestring]]

namespace eval ::tcl::test::io {
    namespace import ::tcltest::*

    variable umaskValue
    variable path
    variable f
    variable i
    variable n
    variable v
    variable msg
    variable expected

    ::tcltest::loadTestedCommands
    catch [list package require -exact Tcltest [info patchlevel]]
    
    testConstraint testchannel      [llength [info commands testchannel]]
    testConstraint exec             [llength [info commands exec]]
    testConstraint openpipe         1
    testConstraint fileevent        [llength [info commands fileevent]]
    testConstraint fcopy            [llength [info commands fcopy]]
    testConstraint testfevent       [llength [info commands testfevent]]
    testConstraint testchannelevent [llength [info commands testchannelevent]]
    testConstraint testmainthread   [llength [info commands testmainthread]]
    testConstraint thread [expr {0 == [catch {package require Thread 2.7-}]}]

    # You need a *very* special environment to do some tests.  In particular,
    # many file systems do not support large-files...
    testConstraint largefileSupport [expr {$::tcl_platform(os) ne "Darwin"}]

    # some tests can only be run is umask is 2 if "umask" cannot be run, the
    # tests will be skipped.
    set umaskValue 0
    testConstraint umask [expr {![catch {set umaskValue [scan [exec /bin/sh -c umask] %o]}]}]

    testConstraint makeFileInHome [expr {![file exists ~/_test_] && [file writable ~]}]

    # set up a long data file for some of the following tests

    set path(longfile) [makeFile {} longfile]
    set f [open $path(longfile) w]
    chan configure $f -eofchar {} -translation lf
    for { set i 0 } { $i < 100 } { incr i} {
	chan puts $f "#123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef
\#123456789abcdef01
\#"
    }
    chan close $f

    set path(cat) [makeFile {
	set f stdin
	if {$argv != ""} {
	    set f [open [lindex $argv 0]]
	}
	chan configure $f -encoding binary -translation lf -blocking 0 -eofchar \x1a
	chan configure stdout -encoding binary -translation lf -buffering none
	chan event $f readable "foo $f"
	proc foo {f} {
	    set x [chan read $f]
	    catch {chan puts -nonewline $x}
	    if {[chan eof $f]} {
		chan close $f
		exit 0
	    }
	}
	vwait forever
    } cat]

    set thisScript [file join [pwd] [info script]]

    proc contents {file} {
	set f [open $file]
	chan configure $f -translation binary
	set a [chan read $f]
	chan close $f
	return $a
    }

    # Wrapper round butt-ugly pipe syntax
    proc openpipe {{mode r+} args} {
	open "|[list [interpreter] {*}$args]" $mode
    }

test chan-io-1.5 {Tcl_WriteChars: CheckChannelErrors} {emptyTest} {
    # no test, need to cause an async error.
} {}
set path(test1) [makeFile {} test1]
test chan-io-1.6 {Tcl_WriteChars: WriteBytes} {
    set f [open $path(test1) w]
    chan configure $f -encoding binary
    chan puts -nonewline $f "a\u4e4d\0"
    chan close $f
    contents $path(test1)
} "a\x4d\x00"
test chan-io-1.7 {Tcl_WriteChars: WriteChars} {
    set f [open $path(test1) w]
    chan configure $f -encoding shiftjis
    chan puts -nonewline $f "a\u4e4d\0"
    chan close $f
    contents $path(test1)
} "a\x93\xe1\x00"
set path(test2) [makeFile {} test2]
test chan-io-1.8 {Tcl_WriteChars: WriteChars} {
    # This test written for SF bug #506297.
    #
    # Executing this test without the fix for the referenced bug applied to
    # tcl will cause tcl, more specifically WriteChars, to go into an infinite
    # loop.
    set f [open $path(test2) w] 
    chan configure      $f -encoding iso2022-jp 
    chan puts -nonewline $f [format %s%c [string repeat " " 4] 12399] 
    chan close           $f 
    contents $path(test2)
} "    \x1b\$B\$O\x1b(B"
test chan-io-1.9 {Tcl_WriteChars: WriteChars} {
    # When closing a channel with an encoding that appends escape bytes, check
    # for the case where the escape bytes overflow the current IO buffer. The
    # bytes should be moved into a new buffer.
    set data "1234567890 [format %c 12399]"
    set sizes [list]
    # With default buffer size
    set f [open $path(test2) w]
    chan configure      $f -encoding iso2022-jp
    chan puts -nonewline $f $data
    chan close           $f
    lappend sizes [file size $path(test2)]
    # With buffer size equal to the length of the data, the escape bytes would
    # go into the next buffer.
    set f [open $path(test2) w]
    chan configure      $f -encoding iso2022-jp -buffersize 16
    chan puts -nonewline $f $data
    chan close           $f
    lappend sizes [file size $path(test2)]
    # With buffer size that is large enough to hold 1 byte of escaped data,
    # but not all 3. This should not write the escape bytes to the first
    # buffer and then again to the second buffer.
    set f [open $path(test2) w]
    chan configure      $f -encoding iso2022-jp -buffersize 17
    chan puts -nonewline $f $data
    chan close           $f
    lappend sizes [file size $path(test2)]
    # With buffer size that can hold 2 out of 3 bytes of escaped data.
    set f [open $path(test2) w]
    chan configure      $f -encoding iso2022-jp -buffersize 18
    chan puts -nonewline $f $data
    chan close           $f
    lappend sizes [file size $path(test2)]
    # With buffer size that can hold all the data and escape bytes.
    set f [open $path(test2) w]
    chan configure      $f -encoding iso2022-jp -buffersize 19
    chan puts -nonewline $f $data
    chan close           $f
    lappend sizes [file size $path(test2)]
} {19 19 19 19 19}

test chan-io-2.1 {WriteBytes} {
    # loop until all bytes are written
    set f [open $path(test1) w]
    chan configure $f  -encoding binary -buffersize 16 -translation crlf
    chan puts $f "abcdefghijklmnopqrstuvwxyz"
    chan close $f
    contents $path(test1)
} "abcdefghijklmnopqrstuvwxyz\r\n"
test chan-io-2.2 {WriteBytes: savedLF > 0} {
    # After flushing buffer, there was a \n left over from the last
    # \n -> \r\n expansion.  It gets stuck at beginning of this buffer.
    set f [open $path(test1) w]
    chan configure $f -encoding binary -buffersize 16 -translation crlf
    chan puts -nonewline $f "123456789012345\n12"
    set x [list [contents $path(test1)]]
    chan close $f
    lappend x [contents $path(test1)]
} [list "123456789012345\r" "123456789012345\r\n12"]
test chan-io-2.3 {WriteBytes: flush on line} -body {
    # Tcl "line" buffering has weird behavior: if current buffer contains a
    # \n, entire buffer gets flushed.  Logical behavior would be to flush only
    # up to the \n.
    set f [open $path(test1) w]
    chan configure $f -encoding binary -buffering line -translation crlf
    chan puts -nonewline $f "\n12"
    contents $path(test1)
} -cleanup {
    chan close $f
} -result "\r\n12"
test chan-io-2.4 {WriteBytes: reset sawLF after each buffer} {
    set f [open $path(test1) w]
     chan configure $f -encoding binary -buffering line -translation lf \
	     -buffersize 16
    chan puts -nonewline $f "abcdefg\nhijklmnopqrstuvwxyz"
    set x [list [contents $path(test1)]]
    chan close $f
    lappend x [contents $path(test1)]
} [list "abcdefg\nhijklmno" "abcdefg\nhijklmnopqrstuvwxyz"]

test chan-io-3.1 {WriteChars: compatibility with WriteBytes} {
    # loop until all bytes are written
    set f [open $path(test1) w]
    chan configure $f -encoding ascii -buffersize 16 -translation crlf
    chan puts $f "abcdefghijklmnopqrstuvwxyz"
    chan close $f
    contents $path(test1)
} "abcdefghijklmnopqrstuvwxyz\r\n"
test chan-io-3.2 {WriteChars: compatibility with WriteBytes: savedLF > 0} {
    # After flushing buffer, there was a \n left over from the last
    # \n -> \r\n expansion.  It gets stuck at beginning of this buffer.
    set f [open $path(test1) w]
    chan configure $f -encoding ascii -buffersize 16 -translation crlf
    chan puts -nonewline $f "123456789012345\n12"
    set x [list [contents $path(test1)]]
    chan close $f
    lappend x [contents $path(test1)]
} [list "123456789012345\r" "123456789012345\r\n12"]
test chan-io-3.3 {WriteChars: compatibility with WriteBytes: flush on line} -body {
    # Tcl "line" buffering has weird behavior: if current buffer contains a
    # \n, entire buffer gets flushed.  Logical behavior would be to flush only
    # up to the \n.
    set f [open $path(test1) w]
    chan configure $f -encoding ascii -buffering line -translation crlf
    chan puts -nonewline $f "\n12"
    contents $path(test1)
} -cleanup {
    chan close $f
} -result "\r\n12"
test chan-io-3.4 {WriteChars: loop over stage buffer} {
    # stage buffer maps to more than can be queued at once.
    set f [open $path(test1) w]
    chan configure $f -encoding jis0208 -buffersize 16 
    chan puts -nonewline $f "\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\"
    set x [list [contents $path(test1)]]
    chan close $f
    lappend x [contents $path(test1)]
} [list "!)!)!)!)!)!)!)!)" "!)!)!)!)!)!)!)!)!)!)!)!)!)!)!)"]
test chan-io-3.5 {WriteChars: saved != 0} {
    # Bytes produced by UtfToExternal from end of last channel buffer had to
    # be moved to beginning of next channel buffer to preserve requested
    # buffersize.
    set f [open $path(test1) w]
    chan configure $f -encoding jis0208 -buffersize 17 
    chan puts -nonewline $f "\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\"
    set x [list [contents $path(test1)]]
    chan close $f
    lappend x [contents $path(test1)]
} [list "!)!)!)!)!)!)!)!)!" "!)!)!)!)!)!)!)!)!)!)!)!)!)!)!)"]
test chan-io-3.6 {WriteChars: (stageRead + dstWrote == 0)} {
    # One incomplete UTF-8 character at end of staging buffer. Backup in src
    # to the beginning of that UTF-8 character and try again.
    #
    # Translate the first 16 bytes, produce 14 bytes of output, 2 left over
    # (first two bytes of \uff21 in UTF-8). Given those two bytes try
    # translating them again, find that no bytes are read produced, and break
    # to outer loop where those two bytes will have the remaining 4 bytes (the
    # last byte of \uff21 plus the all of \uff22) appended.
    set f [open $path(test1) w]
    chan configure $f -encoding shiftjis -buffersize 16
    chan puts -nonewline $f "12345678901234\uff21\uff22"
    set x [list [contents $path(test1)]]
    chan close $f
    lappend x [contents $path(test1)]
} [list "12345678901234\x82\x60" "12345678901234\x82\x60\x82\x61"]
test chan-io-3.7 {WriteChars: (bufPtr->nextAdded > bufPtr->length)} {
    # When translating UTF-8 to external, the produced bytes went past end of
    # the channel buffer. This is done on purpose - we then truncate the bytes
    # at the end of the partial character to preserve the requested blocksize
    # on flush. The truncated bytes are moved to the beginning of the next
    # channel buffer.
    set f [open $path(test1) w]
    chan configure $f -encoding jis0208 -buffersize 17 
    chan puts -nonewline $f "\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\"
    set x [list [contents $path(test1)]]
    chan close $f
    lappend x [contents $path(test1)]
} [list "!)!)!)!)!)!)!)!)!" "!)!)!)!)!)!)!)!)!)!)!)!)!)!)!)"]
test chan-io-3.8 {WriteChars: reset sawLF after each buffer} {
    set f [open $path(test1) w]
    chan configure $f -encoding ascii -buffering line -translation lf \
	     -buffersize 16
    chan puts -nonewline $f "abcdefg\nhijklmnopqrstuvwxyz"
    set x [list [contents $path(test1)]]
    chan close $f
    lappend x [contents $path(test1)]
} [list "abcdefg\nhijklmno" "abcdefg\nhijklmnopqrstuvwxyz"]

test chan-io-4.1 {TranslateOutputEOL: lf} {
    # search for \n
    set f [open $path(test1) w]
    chan configure $f -buffering line -translation lf
    chan puts $f "abcde"
    set x [list [contents $path(test1)]]
    chan close $f
    lappend x [contents $path(test1)]
} [list "abcde\n" "abcde\n"]
test chan-io-4.2 {TranslateOutputEOL: cr} {
    # search for \n, replace with \r
    set f [open $path(test1) w]
    chan configure $f -buffering line -translation cr
    chan puts $f "abcde"
    set x [list [contents $path(test1)]]
    chan close $f
    lappend x [contents $path(test1)]
} [list "abcde\r" "abcde\r"]
test chan-io-4.3 {TranslateOutputEOL: crlf} {
    # simple case: search for \n, replace with \r
    set f [open $path(test1) w]
    chan configure $f -buffering line -translation crlf
    chan puts $f "abcde"
    set x [list [contents $path(test1)]]
    chan close $f
    lappend x [contents $path(test1)]
} [list "abcde\r\n" "abcde\r\n"]
test chan-io-4.4 {TranslateOutputEOL: crlf} {
    # Keep storing more bytes in output buffer until output buffer is full. We
    # have 13 bytes initially that would turn into 18 bytes. Fill dest buffer
    # while (dstEnd < dstMax).
    set f [open $path(test1) w]
    chan configure $f -translation crlf -buffersize 16
    chan puts -nonewline $f "1234567\n\n\n\n\nA"
    set x [list [contents $path(test1)]]
    chan close $f
    lappend x [contents $path(test1)]
} [list "1234567\r\n\r\n\r\n\r\n\r" "1234567\r\n\r\n\r\n\r\n\r\nA"]
test chan-io-4.5 {TranslateOutputEOL: crlf} {
    # Check for overflow of the destination buffer
    set f [open $path(test1) w]
    chan configure $f -translation crlf -buffersize 12
    chan puts -nonewline $f "12345678901\n456789012345678901234"
    chan close $f
    set x [contents $path(test1)]
} "12345678901\r\n456789012345678901234"

test chan-io-5.1 {CheckFlush: not full} {
    set f [open $path(test1) w]
    chan configure $f 
    chan puts -nonewline $f "12345678901234567890"
    set x [list [contents $path(test1)]]
    chan close $f
    lappend x [contents $path(test1)]
} [list "" "12345678901234567890"]
test chan-io-5.2 {CheckFlush: full} {
    set f [open $path(test1) w]
    chan configure $f -buffersize 16
    chan puts -nonewline $f "12345678901234567890"
    set x [list [contents $path(test1)]]
    chan close $f
    lappend x [contents $path(test1)]
} [list "1234567890123456" "12345678901234567890"]
test chan-io-5.3 {CheckFlush: not line} {
    set f [open $path(test1) w]
    chan configure $f -buffering line
    chan puts -nonewline $f "12345678901234567890"
    set x [list [contents $path(test1)]]
    chan close $f
    lappend x [contents $path(test1)]
} [list "" "12345678901234567890"]
test chan-io-5.4 {CheckFlush: line} {
    set f [open $path(test1) w]
    chan configure $f -buffering line -translation lf -encoding ascii
    chan puts -nonewline $f "1234567890\n1234567890"
    set x [list [contents $path(test1)]]
    chan close $f
    lappend x [contents $path(test1)]
} [list "1234567890\n1234567890" "1234567890\n1234567890"]
test chan-io-5.5 {CheckFlush: none} {
    set f [open $path(test1) w]
    chan configure $f -buffering none
    chan puts -nonewline $f "1234567890"
    set x [list [contents $path(test1)]]
    chan close $f
    lappend x [contents $path(test1)]
} [list "1234567890" "1234567890"]

test chan-io-6.1 {Tcl_GetsObj: working} -body {
    set f [open $path(test1) w]
    chan puts $f "foo\nboo"
    chan close $f
    set f [open $path(test1)]
    chan gets $f
} -cleanup {
    chan close $f
} -result {foo}
test chan-io-6.2 {Tcl_GetsObj: CheckChannelErrors() != 0} emptyTest {
    # no test, need to cause an async error.
} {}
test chan-io-6.3 {Tcl_GetsObj: how many have we used?} -body {
    # if (bufPtr != NULL) {oldRemoved = bufPtr->nextRemoved}
    set f [open $path(test1) w]
    chan configure $f -translation crlf
    chan puts $f "abc\ndefg"
    chan close $f
    set f [open $path(test1)]
    list [chan tell $f] [chan gets $f line] [chan tell $f] [chan gets $f line] $line
} -cleanup {
    chan close $f
} -result {0 3 5 4 defg}
test chan-io-6.4 {Tcl_GetsObj: encoding == NULL} -body {
    set f [open $path(test1) w]
    chan configure $f -translation binary
    chan puts $f "\x81\u1234\0"
    chan close $f
    set f [open $path(test1)]
    chan configure $f -translation binary
    list [chan gets $f line] $line
} -cleanup {
    chan close $f
} -result [list 3 "\x81\x34\x00"]
test chan-io-6.5 {Tcl_GetsObj: encoding != NULL} -body {
    set f [open $path(test1) w]
    chan configure $f -translation binary
    chan puts $f "\x88\xea\x92\x9a"
    chan close $f
    set f [open $path(test1)]
    chan configure $f -encoding shiftjis
    list [chan gets $f line] $line
} -cleanup {
    chan close $f
} -result [list 2 "\u4e00\u4e01"]
set a "bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb"
append a $a
append a $a
test chan-io-6.6 {Tcl_GetsObj: loop test} -body {
    # if (dst >= dstEnd) 
    set f [open $path(test1) w]
    chan puts $f $a
    chan puts $f hi
    chan close $f
    set f [open $path(test1)]
    list [chan gets $f line] $line
} -cleanup {
    chan close $f
} -result [list 256 $a]
test chan-io-6.7 {Tcl_GetsObj: error in input} -constraints {stdio openpipe} -body {
    # if (FilterInputBytes(chanPtr, &gs) != 0)
    set f [openpipe w+ $path(cat)]
    chan puts -nonewline $f "hi\nwould"
    chan flush $f
    chan gets $f
    chan configure $f -blocking 0
    chan gets $f line
} -cleanup {
    chan close $f
} -result {-1}
test chan-io-6.8 {Tcl_GetsObj: remember if EOF is seen} -body {
    set f [open $path(test1) w]
    chan puts $f "abcdef\x1aghijk\nwombat"
    chan close $f
    set f [open $path(test1)]
    chan configure $f -eofchar \x1a
    list [chan gets $f line] $line [chan gets $f line] $line
} -cleanup {
    chan close $f
} -result {6 abcdef -1 {}}
test chan-io-6.9 {Tcl_GetsObj: remember if EOF is seen} -body {
    set f [open $path(test1) w]
    chan puts $f "abcdefghijk\nwom\u001abat"
    chan close $f
    set f [open $path(test1)]
    chan configure $f -eofchar \x1a
    list [chan gets $f line] $line [chan gets $f line] $line
} -cleanup {
    chan close $f
} -result {11 abcdefghijk 3 wom}
# Comprehensive tests
test chan-io-6.10 {Tcl_GetsObj: lf mode: no chars} -body {
    set f [open $path(test1) w]
    chan close $f
    set f [open $path(test1)]
    chan configure $f -translation lf
    list [chan gets $f line] $line
} -cleanup {
    chan close $f
} -result {-1 {}}
test chan-io-6.11 {Tcl_GetsObj: lf mode: lone \n} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf
    chan puts -nonewline $f "\n"
    chan close $f
    set f [open $path(test1)]
    chan configure $f -translation lf
    list [chan gets $f line] $line [chan gets $f line] $line
} -cleanup {
    chan close $f
} -result {0 {} -1 {}}
test chan-io-6.12 {Tcl_GetsObj: lf mode: lone \r} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf
    chan puts -nonewline $f "\r"
    chan close $f
    set f [open $path(test1)]
    chan configure $f -translation lf
    set x [list [chan gets $f line] $line [chan gets $f line] $line]
} -cleanup {
    chan close $f
} -result [list 1 "\r" -1 ""]
test chan-io-6.13 {Tcl_GetsObj: lf mode: 1 char} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf
    chan puts -nonewline $f a
    chan close $f
    set f [open $path(test1)]
    chan configure $f -translation lf
    list [chan gets $f line] $line [chan gets $f line] $line
} -cleanup {
    chan close $f
} -result {1 a -1 {}}
test chan-io-6.14 {Tcl_GetsObj: lf mode: 1 char followed by EOL} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf
    chan puts -nonewline $f "a\n"
    chan close $f
    set f [open $path(test1)]
    chan configure $f -translation lf
    list [chan gets $f line] $line [chan gets $f line] $line
} -cleanup {
    chan close $f
} -result {1 a -1 {}}
test chan-io-6.15 {Tcl_GetsObj: lf mode: several chars} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf
    chan puts -nonewline $f "abcd\nefgh\rijkl\r\nmnop"
    chan close $f
    set f [open $path(test1)]
    chan configure $f -translation lf
    list [chan gets $f line] $line [chan gets $f line] $line \
	[chan gets $f line] $line [chan gets $f line] $line
} -cleanup {
    chan close $f
} -result [list 4 "abcd" 10 "efgh\rijkl\r" 4 "mnop" -1 ""]
test chan-io-6.16 {Tcl_GetsObj: cr mode: no chars} -body {
    set f [open $path(test1) w]
    chan close $f
    set f [open $path(test1)]
    chan configure $f -translation cr
    list [chan gets $f line] $line
} -cleanup {
    chan close $f
} -result {-1 {}}
test chan-io-6.17 {Tcl_GetsObj: cr mode: lone \n} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf
    chan puts -nonewline $f "\n"
    chan close $f
    set f [open $path(test1)]
    chan configure $f -translation cr
    list [chan gets $f line] $line [chan gets $f line] $line
} -cleanup {
    chan close $f
} -result [list 1 "\n" -1 ""]
test chan-io-6.18 {Tcl_GetsObj: cr mode: lone \r} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf
    chan puts -nonewline $f "\r"
    chan close $f
    set f [open $path(test1)]
    chan configure $f -translation cr
    list [chan gets $f line] $line [chan gets $f line] $line
} -cleanup {
    chan close $f
} -result {0 {} -1 {}}
test chan-io-6.19 {Tcl_GetsObj: cr mode: 1 char} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf
    chan puts -nonewline $f a
    chan close $f
    set f [open $path(test1)]
    chan configure $f -translation cr
    list [chan gets $f line] $line [chan gets $f line] $line
} -cleanup {
    chan close $f
} -result {1 a -1 {}}
test chan-io-6.20 {Tcl_GetsObj: cr mode: 1 char followed by EOL} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf
    chan puts -nonewline $f "a\r"
    chan close $f
    set f [open $path(test1)]
    chan configure $f -translation cr
    list [chan gets $f line] $line [chan gets $f line] $line
} -cleanup {
    chan close $f
} -result {1 a -1 {}}
test chan-io-6.21 {Tcl_GetsObj: cr mode: several chars} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf
    chan puts -nonewline $f "abcd\nefgh\rijkl\r\nmnop"
    chan close $f
    set f [open $path(test1)]
    chan configure $f -translation cr
    list [chan gets $f line] $line [chan gets $f line] $line [chan gets $f line] $line [chan gets $f line] $line
} -cleanup {
    chan close $f
} -result [list 9 "abcd\nefgh" 4 "ijkl" 5 "\nmnop" -1 ""]
test chan-io-6.22 {Tcl_GetsObj: crlf mode: no chars} -body {
    set f [open $path(test1) w]
    chan close $f
    set f [open $path(test1)]
    chan configure $f -translation crlf
    list [chan gets $f line] $line
} -cleanup {
    chan close $f
} -result {-1 {}}
test chan-io-6.23 {Tcl_GetsObj: crlf mode: lone \n} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf
    chan puts -nonewline $f "\n"
    chan close $f
    set f [open $path(test1)]
    chan configure $f -translation crlf
    list [chan gets $f line] $line [chan gets $f line] $line
} -cleanup {
    chan close $f
} -result [list 1 "\n" -1 ""]
test chan-io-6.24 {Tcl_GetsObj: crlf mode: lone \r} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf
    chan puts -nonewline $f "\r"
    chan close $f
    set f [open $path(test1)]
    chan configure $f -translation crlf
    list [chan gets $f line] $line [chan gets $f line] $line
} -cleanup {
    chan close $f
} -result [list 1 "\r" -1 ""]
test chan-io-6.25 {Tcl_GetsObj: crlf mode: \r\r} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf
    chan puts -nonewline $f "\r\r"
    chan close $f
    set f [open $path(test1)]
    chan configure $f -translation crlf
    list [chan gets $f line] $line [chan gets $f line] $line
} -cleanup {
    chan close $f
} -result [list 2 "\r\r" -1 ""]
test chan-io-6.26 {Tcl_GetsObj: crlf mode: \r\n} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf
    chan puts -nonewline $f "\r\n"
    chan close $f
    set f [open $path(test1)]
    chan configure $f -translation crlf
    list [chan gets $f line] $line [chan gets $f line] $line
} -cleanup {
    chan close $f
} -result {0 {} -1 {}}
test chan-io-6.27 {Tcl_GetsObj: crlf mode: 1 char} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf
    chan puts -nonewline $f a
    chan close $f
    set f [open $path(test1)]
    chan configure $f -translation crlf
    list [chan gets $f line] $line [chan gets $f line] $line
} -cleanup {
    chan close $f
} -result {1 a -1 {}}
test chan-io-6.28 {Tcl_GetsObj: crlf mode: 1 char followed by EOL} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf
    chan puts -nonewline $f "a\r\n"
    chan close $f
    set f [open $path(test1)]
    chan configure $f -translation crlf
    list [chan gets $f line] $line [chan gets $f line] $line
} -cleanup {
    chan close $f
} -result {1 a -1 {}}
test chan-io-6.29 {Tcl_GetsObj: crlf mode: several chars} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf
    chan puts -nonewline $f "abcd\nefgh\rijkl\r\nmnop"
    chan close $f
    set f [open $path(test1)]
    chan configure $f -translation crlf
    list [chan gets $f line] $line [chan gets $f line] $line [chan gets $f line] $line
} -cleanup {
    chan close $f
} -result [list 14 "abcd\nefgh\rijkl" 4 "mnop" -1 ""]
test chan-io-6.30 {Tcl_GetsObj: crlf mode: buffer exhausted} -constraints {testchannel} -body {
    # if (eol >= dstEnd)
    set f [open $path(test1) w]
    chan configure $f -translation lf
    chan puts -nonewline $f "123456789012345\r\nabcdefghijklmnoprstuvwxyz"
    chan close $f
    set f [open $path(test1)]
    chan configure $f -translation crlf -buffersize 16
    list [chan gets $f line] $line [testchannel inputbuffered $f]
} -cleanup {
    chan close $f
} -result [list 15 "123456789012345" 15]
test chan-io-6.31 {Tcl_GetsObj: crlf mode: buffer exhausted, blocked} -setup {
    set x ""
} -constraints {stdio testchannel openpipe fileevent} -body {
    # (FilterInputBytes() != 0)
    set f [openpipe w+ $path(cat)]
    chan configure $f -translation {crlf lf} -buffering none
    chan puts -nonewline $f "bbbbbbbbbbbbbb\r\n123456789012345\r"
    chan configure $f -buffersize 16
    lappend x [chan gets $f]
    chan configure $f -blocking 0
    lappend x [chan gets $f line] $line [chan blocked $f] \
	[testchannel inputbuffered $f]
} -cleanup {
    chan close $f
} -result {bbbbbbbbbbbbbb -1 {} 1 16}
test chan-io-6.32 {Tcl_GetsObj: crlf mode: buffer exhausted, more data} -constraints {testchannel} -body {
    # not (FilterInputBytes() != 0)
    set f [open $path(test1) w]
    chan configure $f -translation lf
    chan puts -nonewline $f "123456789012345\r\n123"
    chan close $f
    set f [open $path(test1)]
    chan configure $f -translation crlf -buffersize 16
    list [chan gets $f line] $line [chan tell $f] [testchannel inputbuffered $f]
} -cleanup {
    chan close $f
} -result {15 123456789012345 17 3}
test chan-io-6.33 {Tcl_GetsObj: crlf mode: buffer exhausted, at eof} -body {
    # eol still equals dstEnd
    set f [open $path(test1) w]
    chan configure $f -translation lf
    chan puts -nonewline $f "123456789012345\r"
    chan close $f
    set f [open $path(test1)]
    chan configure $f -translation crlf -buffersize 16
    list [chan gets $f line] $line [chan eof $f]
} -cleanup {
    chan close $f
} -result [list 16 "123456789012345\r" 1]
test chan-io-6.34 {Tcl_GetsObj: crlf mode: buffer exhausted, not followed by \n} -body {
    # not (*eol == '\n') 
    set f [open $path(test1) w]
    chan configure $f -translation lf
    chan puts -nonewline $f "123456789012345\rabcd\r\nefg"
    chan close $f
    set f [open $path(test1)]
    chan configure $f -translation crlf -buffersize 16
    list [chan gets $f line] $line [chan tell $f]
} -cleanup {
    chan close $f
} -result [list 20 "123456789012345\rabcd" 22]
test chan-io-6.35 {Tcl_GetsObj: auto mode: no chars} -body {
    set f [open $path(test1) w]
    chan close $f
    set f [open $path(test1)]
    chan configure $f -translation auto
    list [chan gets $f line] $line
} -cleanup {
    chan close $f
} -result {-1 {}}
test chan-io-6.36 {Tcl_GetsObj: auto mode: lone \n} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf
    chan puts -nonewline $f "\n"
    chan close $f
    set f [open $path(test1)]
    chan configure $f -translation auto
    list [chan gets $f line] $line [chan gets $f line] $line
} -cleanup {
    chan close $f
} -result {0 {} -1 {}}
test chan-io-6.37 {Tcl_GetsObj: auto mode: lone \r} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf
    chan puts -nonewline $f "\r"
    chan close $f
    set f [open $path(test1)]
    chan configure $f -translation auto
    list [chan gets $f line] $line [chan gets $f line] $line
} -cleanup {
    chan close $f
} -result {0 {} -1 {}}
test chan-io-6.38 {Tcl_GetsObj: auto mode: \r\r} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf
    chan puts -nonewline $f "\r\r"
    chan close $f
    set f [open $path(test1)]
    chan configure $f -translation auto
    list [chan gets $f line] $line [chan gets $f line] $line [chan gets $f line] $line
} -cleanup {
    chan close $f
} -result {0 {} 0 {} -1 {}}
test chan-io-6.39 {Tcl_GetsObj: auto mode: \r\n} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf
    chan puts -nonewline $f "\r\n"
    chan close $f
    set f [open $path(test1)]
    chan configure $f -translation auto
    list [chan gets $f line] $line [chan gets $f line] $line
} -cleanup {
    chan close $f
} -result {0 {} -1 {}}
test chan-io-6.40 {Tcl_GetsObj: auto mode: 1 char} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf
    chan puts -nonewline $f a
    chan close $f
    set f [open $path(test1)]
    chan configure $f -translation auto
    list [chan gets $f line] $line [chan gets $f line] $line
} -cleanup {
    chan close $f
} -result {1 a -1 {}}
test chan-io-6.41 {Tcl_GetsObj: auto mode: 1 char followed by EOL} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf
    chan puts -nonewline $f "a\r\n"
    chan close $f
    set f [open $path(test1)]
    chan configure $f -translation auto
    list [chan gets $f line] $line [chan gets $f line] $line
} -cleanup {
    chan close $f
} -result {1 a -1 {}}
test chan-io-6.42 {Tcl_GetsObj: auto mode: several chars} -setup {
    set x ""
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf
    chan puts -nonewline $f "abcd\nefgh\rijkl\r\nmnop"
    chan close $f
    set f [open $path(test1)]
    chan configure $f -translation auto
    lappend x [chan gets $f line] $line [chan gets $f line] $line
    lappend x [chan gets $f line] $line [chan gets $f line] $line [chan gets $f line] $line
} -cleanup {
    chan close $f
} -result {4 abcd 4 efgh 4 ijkl 4 mnop -1 {}}
test chan-io-6.43 {Tcl_GetsObj: input saw cr} -setup {
    set x ""
} -constraints {stdio testchannel openpipe fileevent} -body {
    # if (chanPtr->flags & INPUT_SAW_CR)
    set f [openpipe w+ $path(cat)]
    chan configure $f -translation {auto lf} -buffering none
    chan puts -nonewline $f "bbbbbbbbbbbbbbb\n123456789abcdef\r"
    chan configure $f -buffersize 16
    lappend x [chan gets $f]
    chan configure $f -blocking 0
    lappend x [chan gets $f line] $line [testchannel queuedcr $f] 
    chan configure $f -blocking 1
    chan puts -nonewline $f "\nabcd\refg\x1a"
    lappend x [chan gets $f line] $line [testchannel queuedcr $f]
    lappend x [chan gets $f line] $line
} -cleanup {
    chan close $f
} -result {bbbbbbbbbbbbbbb 15 123456789abcdef 1 4 abcd 0 3 efg}
test chan-io-6.44 {Tcl_GetsObj: input saw cr, not followed by cr} -setup {
    set x ""
} -constraints {stdio testchannel openpipe fileevent} -body {
    # not (*eol == '\n') 
    set f [openpipe w+ $path(cat)]
    chan configure $f -translation {auto lf} -buffering none
    chan puts -nonewline $f "bbbbbbbbbbbbbbb\n123456789abcdef\r"
    chan configure $f -buffersize 16
    lappend x [chan gets $f]
    chan configure $f -blocking 0
    lappend x [chan gets $f line] $line [testchannel queuedcr $f] 
    chan configure $f -blocking 1
    chan puts -nonewline $f "abcd\refg\x1a"
    lappend x [chan gets $f line] $line [testchannel queuedcr $f]
    lappend x [chan gets $f line] $line
} -cleanup {
    chan close $f
} -result {bbbbbbbbbbbbbbb 15 123456789abcdef 1 4 abcd 0 3 efg}
test chan-io-6.45 {Tcl_GetsObj: input saw cr, skip right number of bytes} -setup {
    set x ""
} -constraints {stdio testchannel openpipe fileevent} -body {
    # Tcl_ExternalToUtf()
    set f [openpipe w+ $path(cat)]
    chan configure $f -translation {auto lf} -buffering none
    chan configure $f -encoding unicode
    chan puts -nonewline $f "bbbbbbbbbbbbbbb\n123456789abcdef\r"
    chan configure $f -buffersize 16
    chan gets $f
    chan configure $f -blocking 0
    lappend x [chan gets $f line] $line [testchannel queuedcr $f]
    chan configure $f -blocking 1
    chan puts -nonewline $f "\nabcd\refg"
    lappend x [chan gets $f line] $line [testchannel queuedcr $f]
} -cleanup {
    chan close $f
} -result {15 123456789abcdef 1 4 abcd 0}
test chan-io-6.46 {Tcl_GetsObj: input saw cr, followed by just \n should give eof} -setup {
    set x ""
} -constraints {stdio testchannel openpipe fileevent} -body {
    # memmove()
    set f [openpipe w+ $path(cat)]
    chan configure $f -translation {auto lf} -buffering none
    chan puts -nonewline $f "bbbbbbbbbbbbbbb\n123456789abcdef\r"
    chan configure $f -buffersize 16
    chan gets $f
    chan configure $f -blocking 0
    lappend x [chan gets $f line] $line [testchannel queuedcr $f]
    chan configure $f -blocking 1
    chan puts -nonewline $f "\n\x1a"
    lappend x [chan gets $f line] $line [testchannel queuedcr $f]
} -cleanup {
    chan close $f
} -result {15 123456789abcdef 1 -1 {} 0}
test chan-io-6.47 {Tcl_GetsObj: auto mode: \r at end of buffer, peek for \n} -constraints {testchannel} -body {
    # (eol == dstEnd)
    set f [open $path(test1) w]
    chan configure $f -translation lf
    chan puts -nonewline $f "123456789012345\r\nabcdefghijklmnopq"
    chan close $f
    set f [open $path(test1)]
    chan configure $f -translation auto -buffersize 16
    list [chan gets $f] [testchannel inputbuffered $f]
} -cleanup {
    chan close $f
} -result {123456789012345 15}
test chan-io-6.48 {Tcl_GetsObj: auto mode: \r at end of buffer, no more avail} -constraints {testchannel} -body {
    # PeekAhead() did not get any, so (eol >= dstEnd)
    set f [open $path(test1) w]
    chan configure $f -translation lf
    chan puts -nonewline $f "123456789012345\r"
    chan close $f
    set f [open $path(test1)]
    chan configure $f -translation auto -buffersize 16
    list [chan gets $f] [testchannel queuedcr $f]
} -cleanup {
    chan close $f
} -result {123456789012345 1}
test chan-io-6.49 {Tcl_GetsObj: auto mode: \r followed by \n} -constraints {testchannel} -body {
    # if (*eol == '\n') {skip++}
    set f [open $path(test1) w]
    chan configure $f -translation lf
    chan puts -nonewline $f "123456\r\n78901"
    chan close $f
    set f [open $path(test1)]
    list [chan gets $f] [testchannel queuedcr $f] [chan tell $f] [chan gets $f]
} -cleanup {
    chan close $f
} -result {123456 0 8 78901}
test chan-io-6.50 {Tcl_GetsObj: auto mode: \r not followed by \n} -constraints {testchannel} -body {
    # not (*eol == '\n') 
    set f [open $path(test1) w]
    chan configure $f -translation lf
    chan puts -nonewline $f "123456\r78901"
    chan close $f
    set f [open $path(test1)]
    list [chan gets $f] [testchannel queuedcr $f] [chan tell $f] [chan gets $f]
} -cleanup {
    chan close $f
} -result {123456 0 7 78901}
test chan-io-6.51 {Tcl_GetsObj: auto mode: \n} -body {
    # else if (*eol == '\n') {goto gotoeol;}
    set f [open $path(test1) w]
    chan configure $f -translation lf
    chan puts -nonewline $f "123456\n78901"
    chan close $f
    set f [open $path(test1)]
    list [chan gets $f] [chan tell $f] [chan gets $f]
} -cleanup {
    chan close $f
} -result {123456 7 78901}
test chan-io-6.52 {Tcl_GetsObj: saw EOF character} -constraints {testchannel} -body {
    # if (eof != NULL)
    set f [open $path(test1) w]
    chan configure $f -translation lf
    chan puts -nonewline $f "123456\x1ak9012345\r"
    chan close $f
    set f [open $path(test1)]
    chan configure $f -eofchar \x1a
    list [chan gets $f] [testchannel queuedcr $f] [chan tell $f] [chan gets $f]
} -cleanup {
    chan close $f
} -result {123456 0 6 {}}
test chan-io-6.53 {Tcl_GetsObj: device EOF} -body {
    # didn't produce any bytes
    set f [open $path(test1) w]
    chan close $f
    set f [open $path(test1)]
    list [chan gets $f line] $line [chan eof $f]
} -cleanup {
    chan close $f
} -result {-1 {} 1}
test chan-io-6.54 {Tcl_GetsObj: device EOF} -body {
    # got some bytes before EOF.
    set f [open $path(test1) w]
    chan puts -nonewline $f abc
    chan close $f
    set f [open $path(test1)]
    list [chan gets $f line] $line [chan eof $f]
} -cleanup {
    chan close $f
} -result {3 abc 1}
test chan-io-6.55 {Tcl_GetsObj: overconverted} -body {
    # Tcl_ExternalToUtf(), make sure state updated
    set f [open $path(test1) w]
    chan configure $f -encoding iso2022-jp
    chan puts $f "there\u4e00ok\n\u4e01more bytes\nhere"
    chan close $f
    set f [open $path(test1)]
    chan configure $f -encoding iso2022-jp
    list [chan gets $f line] $line [chan gets $f line] $line [chan gets $f line] $line
} -cleanup {
    chan close $f
} -result [list 8 "there\u4e00ok" 11 "\u4e01more bytes" 4 "here"]
test chan-io-6.56 {Tcl_GetsObj: incomplete lines should disable file events} -setup {
    update
    variable x {}
} -constraints {stdio openpipe fileevent} -body {
    set f [openpipe w+ $path(cat)]
    chan configure $f -buffering none
    chan puts -nonewline $f "foobar"
    chan configure $f -blocking 0
    after 500 [namespace code {
	lappend x timeout
    }]
    chan event $f readable [namespace code {
	lappend x [chan gets $f]
    }]
    vwait [namespace which -variable x]
    vwait [namespace which -variable x]
    chan configure $f -blocking 1
    chan puts -nonewline $f "baz\n"
    after 500 [namespace code {
	lappend x timeout
    }]
    chan configure $f -blocking 0
    vwait [namespace which -variable x]
    vwait [namespace which -variable x]
    return $x
} -cleanup {
    chan close $f
} -result {{} timeout foobarbaz timeout}

test chan-io-7.1 {FilterInputBytes: split up character at end of buffer} -body {
    # (result == TCL_CONVERT_MULTIBYTE)
    set f [open $path(test1) w]
    chan configure $f -encoding shiftjis
    chan puts $f "1234567890123\uff10\uff11\uff12\uff13\uff14\nend"
    chan close $f
    set f [open $path(test1)]
    chan configure $f -encoding shiftjis -buffersize 16
    chan gets $f
} -cleanup {
    chan close $f
} -result "1234567890123\uff10\uff11\uff12\uff13\uff14"
test chan-io-7.2 {FilterInputBytes: split up character in middle of buffer} -body {
    # (bufPtr->nextAdded < bufPtr->bufLength)
    set f [open $path(test1) w]
    chan configure $f -encoding binary
    chan puts -nonewline $f "1234567890\n123\x82\x4f\x82\x50\x82"
    chan close $f
    set f [open $path(test1)]
    chan configure $f -encoding shiftjis
    list [chan gets $f line] $line [chan eof $f]
} -cleanup {
    chan close $f
} -result {10 1234567890 0}
test chan-io-7.3 {FilterInputBytes: split up character at EOF} -setup {
    set x ""
} -constraints {testchannel} -body {
    set f [open $path(test1) w]
    chan configure $f -encoding binary
    chan puts -nonewline $f "1234567890123\x82\x4f\x82\x50\x82"
    chan close $f
    set f [open $path(test1)]
    chan configure $f -encoding shiftjis
    lappend x [chan gets $f line] $line
    lappend x [chan tell $f] [testchannel inputbuffered $f] [chan eof $f]
    lappend x [chan gets $f line] $line
} -cleanup {
    chan close $f
} -result [list 15 "1234567890123\uff10\uff11" 18 0 1 -1 ""]
test chan-io-7.4 {FilterInputBytes: recover from split up character} -setup {
    variable x ""
} -constraints {stdio openpipe fileevent} -body {
    set f [openpipe w+ $path(cat)]
    chan configure $f -encoding binary -buffering none
    chan puts -nonewline $f "1234567890123\x82\x4f\x82\x50\x82"
    chan configure $f -encoding shiftjis -blocking 0
    chan event $f read [namespace code {
	lappend x [chan gets $f line] $line [chan blocked $f]
    }]
    vwait [namespace which -variable x]
    chan configure $f -encoding binary -blocking 1
    chan puts $f "\x51\x82\x52"
    chan configure $f -encoding shiftjis
    vwait [namespace which -variable x]
    return $x
} -cleanup {
    chan close $f
} -result [list -1 "" 1 17 "1234567890123\uff10\uff11\uff12\uff13" 0]

test chan-io-8.1 {PeekAhead: only go to device if no more cached data} -constraints {testchannel} -body {
    # (bufPtr->nextPtr == NULL)
    set f [open $path(test1) w]
    chan configure $f -encoding ascii -translation lf
    chan puts -nonewline $f "123456789012345\r\n2345678"
    chan close $f
    set f [open $path(test1)]
    chan configure $f -encoding ascii -translation auto -buffersize 16
    # here
    chan gets $f
    testchannel inputbuffered $f
} -cleanup {
    chan close $f
} -result 7
test chan-io-8.2 {PeekAhead: only go to device if no more cached data} -setup {
    variable x {}
} -constraints {stdio testchannel openpipe fileevent} -body {
    # not (bufPtr->nextPtr == NULL)
    set f [openpipe w+ $path(cat)]
    chan configure $f -translation lf -encoding ascii -buffering none
    chan puts -nonewline $f "123456789012345\r\nbcdefghijklmnopqrstuvwxyz"
    chan event $f read [namespace code {
	lappend x [chan gets $f line] $line [testchannel inputbuffered $f]
    }]
    chan configure $f -encoding unicode -buffersize 16 -blocking 0
    vwait [namespace which -variable x]
    chan configure $f -translation auto -encoding ascii -blocking 1
    # here
    vwait [namespace which -variable x]
    return $x
} -cleanup {
    chan close $f
} -result {-1 {} 42 15 123456789012345 25}
test chan-io-8.3 {PeekAhead: no cached data available} -constraints {stdio testchannel openpipe fileevent} -body {
    # (bytesLeft == 0)
    set f [openpipe w+ $path(cat)]
    chan configure $f -translation {auto binary}
    chan puts -nonewline $f "abcdefghijklmno\r"
    chan flush $f
    list [chan gets $f line] $line [testchannel queuedcr $f]
} -cleanup {
    chan close $f
} -result {15 abcdefghijklmno 1}
set a "123456789012345678901234567890"
append a "123456789012345678901234567890"
append a "1234567890123456789012345678901"
test chan-io-8.4 {PeekAhead: cached data available in this buffer} -body {
    # not (bytesLeft == 0)
    set f [open $path(test1) w+]
    chan configure $f -translation binary
    chan puts $f "${a}\r\nabcdef"
    chan close $f
    set f [open $path(test1)]
    chan configure $f -encoding binary -translation auto
    # "${a}\r" was converted in one operation (because ENCODING_LINESIZE is
    # 30). To check if "\n" follows, calls PeekAhead and determines that
    # cached data is available in buffer w/o having to call driver.
    chan gets $f
} -cleanup {
    chan close $f
} -result $a
unset a
test chan-io-8.5 {PeekAhead: don't peek if last read was short} -constraints {stdio testchannel openpipe fileevent} -body {
    # (bufPtr->nextAdded < bufPtr->length)
    set f [openpipe w+ $path(cat)]
    chan configure $f -translation {auto binary}
    chan puts -nonewline $f "abcdefghijklmno\r"
    chan flush $f
    # here
    list [chan gets $f line] $line [testchannel queuedcr $f]
} -cleanup {
    chan close $f
} -result {15 abcdefghijklmno 1}
test chan-io-8.6 {PeekAhead: change to non-blocking mode} -constraints {stdio testchannel openpipe fileevent} -body {
    # ((chanPtr->flags & CHANNEL_NONBLOCKING) == 0) 
    set f [openpipe w+ $path(cat)]
    chan configure $f -translation {auto binary} -buffersize 16
    chan puts -nonewline $f "abcdefghijklmno\r"
    chan flush $f
    # here
    list [chan gets $f line] $line [testchannel queuedcr $f]
} -cleanup {
    chan close $f
} -result {15 abcdefghijklmno 1}
test chan-io-8.7 {PeekAhead: cleanup} -setup {
    set x ""
} -constraints {stdio testchannel openpipe fileevent} -body {
    # Make sure bytes are removed from buffer.
    set f [openpipe w+ $path(cat)]
    chan configure $f -translation {auto binary} -buffering none
    chan puts -nonewline $f "abcdefghijklmno\r"
    # here
    lappend x [chan gets $f line] $line [testchannel queuedcr $f]
    chan puts -nonewline $f "\x1a"
    lappend x [chan gets $f line] $line
} -cleanup {
    chan close $f
} -result {15 abcdefghijklmno 1 -1 {}}

test chan-io-9.1 {CommonGetsCleanup} emptyTest {
} {}

test chan-io-10.1 {Tcl_ReadChars: CheckChannelErrors} emptyTest {
    # no test, need to cause an async error.
} {}
test chan-io-10.2 {Tcl_ReadChars: loop until enough copied} -body {
    # one time
    # for (copied = 0; (unsigned) toRead > 0; )
    set f [open $path(test1) w]
    chan puts $f abcdefghijklmnop
    chan close $f
    set f [open $path(test1)]
    chan read $f 5
} -cleanup {
    chan close $f
} -result {abcde}
test chan-io-10.3 {Tcl_ReadChars: loop until enough copied} -body {
    # multiple times
    # for (copied = 0; (unsigned) toRead > 0; )
    set f [open $path(test1) w]
    chan puts $f abcdefghijklmnopqrstuvwxyz
    chan close $f
    set f [open $path(test1)]
    chan configure $f -buffersize 16
    # here
    chan read $f 19
} -cleanup {
    chan close $f
} -result {abcdefghijklmnopqrs}
test chan-io-10.4 {Tcl_ReadChars: no more in channel buffer} -body {
    # (copiedNow < 0)
    set f [open $path(test1) w]
    chan puts -nonewline $f abcdefghijkl
    chan close $f
    set f [open $path(test1)]
    # here
    chan read $f 1000
} -cleanup {
    chan close $f
} -result {abcdefghijkl}
test chan-io-10.5 {Tcl_ReadChars: stop on EOF} -body {
    # (chanPtr->flags & CHANNEL_EOF)
    set f [open $path(test1) w]
    chan puts -nonewline $f abcdefghijkl
    chan close $f
    set f [open $path(test1)]
    # here
    chan read $f 1000
} -cleanup {
    chan close $f
} -result {abcdefghijkl}

test chan-io-11.1 {ReadBytes: want to read a lot} -body {
    # ((unsigned) toRead > (unsigned) srcLen)
    set f [open $path(test1) w]
    chan puts -nonewline $f abcdefghijkl
    chan close $f
    set f [open $path(test1)]
    chan configure $f -encoding binary
    # here
    chan read $f 1000
} -cleanup {
    chan close $f
} -result {abcdefghijkl}
test chan-io-11.2 {ReadBytes: want to read all} -body {
    # ((unsigned) toRead > (unsigned) srcLen)
    set f [open $path(test1) w]
    chan puts -nonewline $f abcdefghijkl
    chan close $f
    set f [open $path(test1)]
    chan configure $f -encoding binary
    # here
    chan read $f
} -cleanup {
    chan close $f
} -result {abcdefghijkl}
test chan-io-11.3 {ReadBytes: allocate more space} -body {
    # (toRead > length - offset - 1)
    set f [open $path(test1) w]
    chan puts -nonewline $f abcdefghijklmnopqrstuvwxyz
    chan close $f
    set f [open $path(test1)]
    chan configure $f -buffersize 16 -encoding binary
    # here
    chan read $f
} -cleanup {
    chan close $f
} -result {abcdefghijklmnopqrstuvwxyz}
test chan-io-11.4 {ReadBytes: EOF char found} -body {
    # (TranslateInputEOL() != 0)
    set f [open $path(test1) w]
    chan puts $f abcdefghijklmnopqrstuvwxyz
    chan close $f
    set f [open $path(test1)]
    chan configure $f -eofchar m -encoding binary
    # here
    list [chan read $f] [chan eof $f] [chan read $f] [chan eof $f]
} -cleanup {
    chan close $f
} -result {abcdefghijkl 1 {} 1}

test chan-io-12.1 {ReadChars: want to read a lot} -body {
    # ((unsigned) toRead > (unsigned) srcLen)
    set f [open $path(test1) w]
    chan puts -nonewline $f abcdefghijkl
    chan close $f
    set f [open $path(test1)]
    # here
    chan read $f 1000
} -cleanup {
    chan close $f
} -result {abcdefghijkl}
test chan-io-12.2 {ReadChars: want to read all} -body {
    # ((unsigned) toRead > (unsigned) srcLen)
    set f [open $path(test1) w]
    chan puts -nonewline $f abcdefghijkl
    chan close $f
    set f [open $path(test1)]
    # here
    chan read $f
} -cleanup {
    chan close $f
} -result {abcdefghijkl}
test chan-io-12.3 {ReadChars: allocate more space} -body {
    # (toRead > length - offset - 1)
    set f [open $path(test1) w]
    chan puts -nonewline $f abcdefghijklmnopqrstuvwxyz
    chan close $f
    set f [open $path(test1)]
    chan configure $f -buffersize 16
    # here
    chan read $f
} -cleanup {
    chan close $f
} -result {abcdefghijklmnopqrstuvwxyz}
test chan-io-12.4 {ReadChars: split-up char} -setup {
    variable x {}
} -constraints {stdio testchannel openpipe fileevent} -body {
    # (srcRead == 0)
    set f [openpipe w+ $path(cat)]
    chan configure $f -encoding binary -buffering none -buffersize 16
    chan puts -nonewline $f "123456789012345\x96"
    chan configure $f -encoding shiftjis -blocking 0
    chan event $f read [namespace code {
	lappend x [chan read $f] [testchannel inputbuffered $f]
    }]
    chan configure $f -encoding shiftjis
    vwait [namespace which -variable x]
    chan configure $f -encoding binary -blocking 1
    chan puts -nonewline $f "\x7b"
    after 500			;# Give the cat process time to catch up
    chan configure $f -encoding shiftjis -blocking 0
    vwait [namespace which -variable x]
    return $x
} -cleanup {
    chan close $f
} -result [list "123456789012345" 1 "\u672c" 0]
test chan-io-12.5 {ReadChars: chan events on partial characters} -setup {
    variable x {}
} -constraints {stdio openpipe fileevent} -body {
    set path(test1) [makeFile {
	chan configure stdout -encoding binary -buffering none
	chan gets stdin; chan puts -nonewline "\xe7"
	chan gets stdin; chan puts -nonewline "\x89"
	chan gets stdin; chan puts -nonewline "\xa6"
    } test1]
    set f [openpipe r+ $path(test1)]
    chan event $f readable [namespace code {
	lappend x [chan read $f]
	if {[chan eof $f]} {
	    lappend x eof
	}
    }]
    chan puts $f "go1"
    chan flush $f
    chan configure $f -blocking 0 -encoding utf-8
    vwait [namespace which -variable x]
    after 500 [namespace code { lappend x timeout }]
    vwait [namespace which -variable x]
    chan puts $f "go2"
    chan flush $f
    vwait [namespace which -variable x]
    after 500 [namespace code { lappend x timeout }]
    vwait [namespace which -variable x]
    chan puts $f "go3"
    chan flush $f
    vwait [namespace which -variable x]
    vwait [namespace which -variable x]
    lappend x [catch {chan close $f} msg] $msg
} -result "{} timeout {} timeout \u7266 {} eof 0 {}"

test chan-io-13.1 {TranslateInputEOL: cr mode} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf
    chan puts -nonewline $f "abcd\rdef\r"
    chan close $f
    set f [open $path(test1)]
    chan configure $f -translation cr
    chan read $f
} -cleanup {
    chan close $f
} -result "abcd\ndef\n"
test chan-io-13.2 {TranslateInputEOL: crlf mode} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf
    chan puts -nonewline $f "abcd\r\ndef\r\n"
    chan close $f
    set f [open $path(test1)]
    chan configure $f -translation crlf
    chan read $f
} -cleanup {
    chan close $f
} -result "abcd\ndef\n"
test chan-io-13.3 {TranslateInputEOL: crlf mode: naked cr} -body {
    # (src >= srcMax) 
    set f [open $path(test1) w]
    chan configure $f -translation lf
    chan puts -nonewline $f "abcd\r\ndef\r"
    chan close $f
    set f [open $path(test1)]
    chan configure $f -translation crlf
    chan read $f
} -cleanup {
    chan close $f
} -result "abcd\ndef\r"
test chan-io-13.4 {TranslateInputEOL: crlf mode: cr followed by not \n} -body {
    # (src >= srcMax) 
    set f [open $path(test1) w]
    chan configure $f -translation lf
    chan puts -nonewline $f "abcd\r\ndef\rfgh"
    chan close $f
    set f [open $path(test1)]
    chan configure $f -translation crlf
    chan read $f
} -cleanup {
    chan close $f
} -result "abcd\ndef\rfgh"
test chan-io-13.5 {TranslateInputEOL: crlf mode: naked lf} -body {
    # (src >= srcMax) 
    set f [open $path(test1) w]
    chan configure $f -translation lf
    chan puts -nonewline $f "abcd\r\ndef\nfgh"
    chan close $f
    set f [open $path(test1)]
    chan configure $f -translation crlf
    chan read $f
} -cleanup {
    chan close $f
} -result "abcd\ndef\nfgh"
test chan-io-13.6 {TranslateInputEOL: auto mode: saw cr in last segment} -setup {
    variable x {}
    variable y {}
} -constraints {stdio testchannel openpipe fileevent} -body {
    # (chanPtr->flags & INPUT_SAW_CR)
    # This test may fail on slower machines.
    set f [openpipe w+ $path(cat)]
    chan configure $f -blocking 0 -buffering none -translation {auto lf}
    chan event $f read [namespace code {
	lappend x [chan read $f] [testchannel queuedcr $f]
    }]
    chan puts -nonewline $f "abcdefghj\r"
    after 500 [namespace code {set y ok}]
    vwait [namespace which -variable y]
    chan puts -nonewline $f "\n01234"
    after 500 [namespace code {set y ok}]
    vwait [namespace which -variable y]
    return $x
} -cleanup {
    chan close $f
} -result [list "abcdefghj\n" 1 "01234" 0]
test chan-io-13.7 {TranslateInputEOL: auto mode: naked \r} -constraints {testchannel openpipe} -body {
    # (src >= srcMax)
    set f [open $path(test1) w]
    chan configure $f -translation lf
    chan puts -nonewline $f "abcd\r"
    chan close $f
    set f [open $path(test1)]
    chan configure $f -translation auto
    list [chan read $f] [testchannel queuedcr $f]
} -cleanup {
    chan close $f
} -result [list "abcd\n" 1]
test chan-io-13.8 {TranslateInputEOL: auto mode: \r\n} -body {
    # (*src == '\n')
    set f [open $path(test1) w]
    chan configure $f -translation lf
    chan puts -nonewline $f "abcd\r\ndef"
    chan close $f
    set f [open $path(test1)]
    chan configure $f -translation auto
    chan read $f
} -cleanup {
    chan close $f
} -result "abcd\ndef"
test chan-io-13.9 {TranslateInputEOL: auto mode: \r followed by not \n} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf
    chan puts -nonewline $f "abcd\rdef"
    chan close $f
    set f [open $path(test1)]
    chan configure $f -translation auto
    chan read $f
} -cleanup {
    chan close $f
} -result "abcd\ndef"
test chan-io-13.10 {TranslateInputEOL: auto mode: \n} -body {
    # not (*src == '\r') 
    set f [open $path(test1) w]
    chan configure $f -translation lf
    chan puts -nonewline $f "abcd\ndef"
    chan close $f
    set f [open $path(test1)]
    chan configure $f -translation auto
    chan read $f
} -cleanup {
    chan close $f
} -result "abcd\ndef"
test chan-io-13.11 {TranslateInputEOL: EOF char} -body {
    # (*chanPtr->inEofChar != '\0')
    set f [open $path(test1) w]
    chan configure $f -translation lf
    chan puts -nonewline $f "abcd\ndefgh"
    chan close $f
    set f [open $path(test1)]
    chan configure $f -translation auto -eofchar e
    chan read $f
} -cleanup {
    chan close $f
} -result "abcd\nd"
test chan-io-13.12 {TranslateInputEOL: find EOF char in src} -body {
    # (*chanPtr->inEofChar != '\0')
    set f [open $path(test1) w]
    chan configure $f -translation lf
    chan puts -nonewline $f "\r\n\r\n\r\nab\r\n\r\ndef\r\n\r\n\r\n"
    chan close $f
    set f [open $path(test1)]
    chan configure $f -translation auto -eofchar e
    chan read $f
} -cleanup {
    chan close $f
} -result "\n\n\nab\n\nd"

# Test standard handle management. The functions tested are Tcl_SetStdChannel
# and Tcl_GetStdChannel. Incidentally we are also testing channel table
# management.

if {[testConstraint testchannel]} {
    set consoleFileNames [lsort [testchannel open]]
} else {
    # just to avoid an error
    set consoleFileNames [list]
}

test chan-io-14.1 {Tcl_SetStdChannel and Tcl_GetStdChannel} {testchannel} {
    set result ""
    lappend result [chan configure stdin -buffering]
    lappend result [chan configure stdout -buffering]
    lappend result [chan configure stderr -buffering]
    lappend result [lsort [testchannel open]]
} [list line line none $consoleFileNames]
test chan-io-14.2 {Tcl_SetStdChannel and Tcl_GetStdChannel} -setup {
    interp create x
    set result ""
} -body {
    lappend result [x eval {chan configure stdin -buffering}]
    lappend result [x eval {chan configure stdout -buffering}]
    lappend result [x eval {chan configure stderr -buffering}]
} -cleanup {
    interp delete x
} -result {line line none}
set path(test3) [makeFile {} test3]
test chan-io-14.3 {Tcl_SetStdChannel & Tcl_GetStdChannel} -constraints {exec openpipe} -body {
    set f [open $path(test1) w]
    chan puts -nonewline $f {
	chan close stdin
	chan close stdout
	chan close stderr
	set f  [}
    chan puts $f [list open $path(test1) r]]
    chan puts $f "set f2 \[[list open $path(test2) w]]"
    chan puts $f "set f3 \[[list open $path(test3) w]]"
    chan puts $f {	chan puts stdout [chan gets stdin]
	chan puts stdout out
	chan puts stderr err
	chan close $f
	chan close $f2
	chan close $f3
    }
    chan close $f
    set result [exec [interpreter] $path(test1)]
    set f  [open $path(test2) r]
    set f2 [open $path(test3) r]
    lappend result [chan read $f] [chan read $f2]
} -cleanup {
    chan close $f
    chan close $f2
} -result {{
out
} {err
}}
# This test relies on the fact that stdout is used before stderr.
test chan-io-14.4 {Tcl_SetStdChannel & Tcl_GetStdChannel} -constraints {exec} -body {
    set f [open $path(test1) w]
    chan puts -nonewline $f { chan close stdin
	chan close stdout
	chan close stderr
	set f  [}
    chan puts $f [list open $path(test1) r]]
    chan puts $f "set f2 \[[list open $path(test2) w]]"
    chan puts $f "set f3 \[[list open $path(test3) w]]"
    chan puts $f {
	chan puts stdout [chan gets stdin]
	chan puts stdout $f2
	chan puts stderr $f3
	chan close $f
	chan close $f2
	chan close $f3
    }
    chan close $f
    set result [exec [interpreter] $path(test1)]
    set f  [open $path(test2) r]
    set f2 [open $path(test3) r]
    lappend result [chan read $f] [chan read $f2]
} -cleanup {
    chan close $f
    chan close $f2
} -result {{ chan close stdin
stdout
} {stderr
}}
catch {interp delete z}
test chan-io-14.5 {Tcl_GetChannel: stdio name translation} -setup {
    interp create z
} -body {
    chan eof stdin
    catch {z eval chan flush stdin} msg1
    catch {z eval chan close stdin} msg2
    catch {z eval chan flush stdin} msg3
    list $msg1 $msg2 $msg3
} -cleanup {
    interp delete z
} -result {{channel "stdin" wasn't opened for writing} {} {can not find channel named "stdin"}}
test chan-io-14.6 {Tcl_GetChannel: stdio name translation} -setup {
    interp create z
} -body {
    chan eof stdout
    catch {z eval chan flush stdout} msg1
    catch {z eval chan close stdout} msg2
    catch {z eval chan flush stdout} msg3
    list $msg1 $msg2 $msg3
} -cleanup {
    interp delete z
} -result {{} {} {can not find channel named "stdout"}}
test chan-io-14.7 {Tcl_GetChannel: stdio name translation} -setup {
    interp create z
} -body {
    chan eof stderr
    catch {z eval chan flush stderr} msg1
    catch {z eval chan close stderr} msg2
    catch {z eval chan flush stderr} msg3
    list $msg1 $msg2 $msg3
} -cleanup {
    interp delete z
} -result {{} {} {can not find channel named "stderr"}}
set path(script) [makeFile {} script]
test chan-io-14.8 {reuse of stdio special channels} -setup {
    file delete $path(script)
    file delete $path(test1)
} -constraints {stdio openpipe} -body {
    set f [open $path(script) w]
    chan puts -nonewline $f {
	chan close stderr
	set f [}
    chan puts $f [list open $path(test1) w]]
    chan puts -nonewline $f {
	chan puts stderr hello
	chan close $f
	set f [}
    chan puts $f [list open $path(test1) r]]
    chan puts $f {
	chan puts [chan gets $f]
    }
    chan close $f
    set f [openpipe r $path(script)]
    chan gets $f
} -cleanup {
    chan close $f
} -result hello
test chan-io-14.9 {reuse of stdio special channels} -setup {
    file delete $path(script)
    file delete $path(test1)
} -constraints {stdio openpipe fileevent} -body {
    set f [open $path(script) w]
    chan puts $f {
        array set path [lindex $argv 0]
	set f [open $path(test1) w]
	chan puts $f hello
	chan close $f
	chan close stderr
	set f [open "|[list [info nameofexecutable] $path(cat) $path(test1)]" r]
	chan puts [chan gets $f]
    }
    chan close $f
    set f [openpipe r $path(script) [array get path]]
    chan gets $f
} -cleanup {
    chan close $f
    # Added delay to give Windows time to stop the spawned process and clean
    # up its grip on the file test1. Added delete as proper test cleanup.
    # The failing tests were 18.1 and 18.2 as first re-users of file "test1".
    after [expr {[testConstraint win] ? 10000 : 500}]
    file delete $path(script)
    file delete $path(test1)
} -result hello

test chan-io-15.1 {Tcl_CreateChan CloseHandler} emptyTest {
} {}

test chan-io-16.1 {Tcl_DeleteChan CloseHandler} emptyTest {
} {}

# Test channel table management. The functions tested are GetChannelTable,
# DeleteChannelTable, Tcl_RegisterChannel, Tcl_UnregisterChannel,
# Tcl_GetChannel and Tcl_CreateChannel.
#
# These functions use "eof stdin" to ensure that the standard channels are
# added to the channel table of the interpreter.

test chan-io-17.1 {GetChannelTable, DeleteChannelTable on std handles} -setup {
    set l ""
} -constraints {testchannel} -body {
    set l1 [testchannel refcount stdin]
    chan eof stdin
    interp create x
    lappend l [expr {[testchannel refcount stdin] - $l1}]
    x eval {chan eof stdin}
    lappend l [expr {[testchannel refcount stdin] - $l1}]
    interp delete x
    lappend l [expr {[testchannel refcount stdin] - $l1}]
} -result {0 1 0}
test chan-io-17.2 {GetChannelTable, DeleteChannelTable on std handles} -setup  {
    set l ""
} -constraints {testchannel} -body {
    set l1 [testchannel refcount stdout]
    chan eof stdin
    interp create x
    lappend l [expr {[testchannel refcount stdout] - $l1}]
    x eval {chan eof stdout}
    lappend l [expr {[testchannel refcount stdout] - $l1}]
    interp delete x
    lappend l [expr {[testchannel refcount stdout] - $l1}]
} -result {0 1 0}
test chan-io-17.3 {GetChannelTable, DeleteChannelTable on std handles} -setup {
    set l ""
} -constraints {testchannel} -body {
    set l1 [testchannel refcount stderr]
    chan eof stdin
    interp create x
    lappend l [expr {[testchannel refcount stderr] - $l1}]
    x eval {chan eof stderr}
    lappend l [expr {[testchannel refcount stderr] - $l1}]
    interp delete x
    lappend l [expr {[testchannel refcount stderr] - $l1}]
} -result {0 1 0}

test chan-io-18.1 {Tcl_RegisterChannel, Tcl_UnregisterChannel} -setup {
    file delete -force $path(test1)
    set l ""
} -constraints {testchannel} -body {
    set f [open $path(test1) w]
    lappend l [lindex [testchannel info $f] 15]
    chan close $f
    if {[catch {lindex [testchannel info $f] 15} msg]} {
	lappend l $msg
    } else {
	lappend l "very broken: $f found after being chan closed"
    }
    string equal $l [list 1 "can not find channel named \"$f\""]
} -result 1
test chan-io-18.2 {Tcl_RegisterChannel, Tcl_UnregisterChannel} -setup {
    file delete -force $path(test1)
    set l ""
} -constraints {testchannel} -body {
    set f [open $path(test1) w]
    lappend l [lindex [testchannel info $f] 15]
    interp create x
    interp share "" $f x
    lappend l [lindex [testchannel info $f] 15]
    x eval chan close $f
    lappend l [lindex [testchannel info $f] 15]
    interp delete x
    lappend l [lindex [testchannel info $f] 15]
    chan close $f
    if {[catch {lindex [testchannel info $f] 15} msg]} {
	lappend l $msg
    } else {
	lappend l "very broken: $f found after being chan closed"
    }
    string equal $l [list 1 2 1 1 "can not find channel named \"$f\""]
} -result 1
test chan-io-18.3 {Tcl_RegisterChannel, Tcl_UnregisterChannel} -setup {
    file delete $path(test1)
    set l ""
} -constraints {testchannel} -body {
    set f [open $path(test1) w]
    lappend l [lindex [testchannel info $f] 15]
    interp create x
    interp share "" $f x
    lappend l [lindex [testchannel info $f] 15]
    interp delete x
    lappend l [lindex [testchannel info $f] 15]
    chan close $f
    if {[catch {lindex [testchannel info $f] 15} msg]} {
	lappend l $msg
    } else {
	lappend l "very broken: $f found after being chan closed"
    }
    string equal $l [list 1 2 1 "can not find channel named \"$f\""]
} -result 1

test chan-io-19.1 {Tcl_GetChannel->Tcl_GetStdChannel, standard handles} {
    chan eof stdin
} 0
test chan-io-19.2 {testing Tcl_GetChannel, user opened handle} -setup {
    file delete $path(test1)
} -body {
    set f [open $path(test1) w]
    chan eof $f
} -cleanup {
    chan close $f
} -result 0
test chan-io-19.3 {Tcl_GetChannel, channel not found} -body {
    chan eof file34
} -returnCodes error -result {can not find channel named "file34"}
test chan-io-19.4 {Tcl_CreateChannel, insertion into channel table} -setup {
    file delete $path(test1)
    set l ""
} -constraints {testchannel} -body {
    set f [open $path(test1) w]
    lappend l [chan eof $f]
    chan close $f
    if {[catch {lindex [testchannel info $f] 15} msg]} {
	lappend l $msg
    } else {
	lappend l "very broken: $f found after being chan closed"
    }
    string equal $l [list 0 "can not find channel named \"$f\""]
} -result 1

test chan-io-20.1 {Tcl_CreateChannel: initial settings} -setup {
    set old [encoding system]
} -body {
    set a [open $path(test2) w]
    encoding system ascii
    set f [open $path(test1) w]
    chan configure $f -encoding
} -cleanup {
    encoding system $old
    chan close $f
    chan close $a
} -result {ascii}
test chan-io-20.2 {Tcl_CreateChannel: initial settings} -constraints {win} -body {
    set f [open $path(test1) w+]
    list [chan configure $f -eofchar] [chan configure $f -translation]
} -cleanup {
    chan close $f
} -result [list [list \x1a ""] {auto crlf}]
test chan-io-20.3 {Tcl_CreateChannel: initial settings} -constraints {unix} -body {
    set f [open $path(test1) w+]
    list [chan configure $f -eofchar] [chan configure $f -translation]
} -cleanup {
    chan close $f
} -result {{{} {}} {auto lf}}
test chan-io-20.5 {Tcl_CreateChannel: install channel in empty slot} -setup {
    set path(stdout) [makeFile {} stdout]
} -constraints {stdio openpipe} -body {
    set f [open $path(script) w]
    chan puts -nonewline $f {
	chan close stdout
	set f1 [}
    chan puts $f [list open $path(stdout) w]]
    chan puts $f {
	chan configure $f1 -buffersize 777
	chan puts stderr [chan configure stdout -buffersize]
    }
    chan close $f
    set f [openpipe r $path(script)]
    chan close $f
} -cleanup {
    removeFile $path(stdout)
} -returnCodes error -result {777}

test chan-io-21.1 {Chan CloseChannelsOnExit} emptyTest {
} {}

# Test management of attributes associated with a channel, such as its default
# translation, its name and type, etc. The functions tested in this group are
# Tcl_GetChannelName, Tcl_GetChannelType and Tcl_GetChannelFile.
# Tcl_GetChannelInstanceData not tested because files do not use the instance
# data.

test chan-io-22.1 {Tcl_GetChannelMode} emptyTest {
    # Not used anywhere in Tcl.
} {}

test chan-io-23.1 {Tcl_GetChannelName} -constraints {testchannel} -setup {
    file delete $path(test1)
} -body {
    set f [open $path(test1) w]
    set n [testchannel name $f]
    expr {$n eq $f ? "ok" : "$n != $f"}
} -cleanup {
    chan close $f
} -result ok

test chan-io-24.1 {Tcl_GetChannelType} -constraints {testchannel} -setup {
    file delete $path(test1)
} -body {
    set f [open $path(test1) w]
    testchannel type $f
} -cleanup {
    chan close $f
} -result "file"

test chan-io-25.1 {Tcl_GetChannelHandle, input} -setup {
    set l ""
} -constraints {testchannel} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf -eofchar {}
    chan puts $f "1234567890\n098765432"
    chan close $f
    set f [open $path(test1) r]
    chan gets $f
    lappend l [testchannel inputbuffered $f]
    lappend l [chan tell $f]
} -cleanup {
    chan close $f
} -result {10 11}
test chan-io-25.2 {Tcl_GetChannelHandle, output} -setup {
    file delete $path(test1)
    set l ""
} -constraints {testchannel} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf
    chan puts $f hello
    lappend l [testchannel outputbuffered $f]
    lappend l [chan tell $f]
    chan flush $f
    lappend l [testchannel outputbuffered $f]
    lappend l [chan tell $f]
} -cleanup {
    chan close $f
    file delete $path(test1)
} -result {6 6 0 6}

test chan-io-26.1 {Tcl_GetChannelInstanceData} -body {
    # "pid" command uses Tcl_GetChannelInstanceData
    # Don't care what pid is (but must be a number), just want to exercise it.
    set f [openpipe r << exit]
    pid $f
} -constraints {stdio openpipe} -cleanup {
    chan close $f
} -match regexp -result {^\d+$}

# Test flushing. The functions tested here are FlushChannel.

test chan-io-27.1 {FlushChannel, no output buffered} -setup {
    file delete $path(test1)
} -body {
    set f [open $path(test1) w]
    chan flush $f
    file size $path(test1)
} -cleanup {
    chan close $f
} -result 0
test chan-io-27.2 {FlushChannel, some output buffered} -setup {
    file delete $path(test1)
    set l ""
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf -eofchar {}
    chan puts $f hello
    lappend l [file size $path(test1)]
    chan flush $f
    lappend l [file size $path(test1)]
    chan close $f
    lappend l [file size $path(test1)]
} -result {0 6 6}
test chan-io-27.3 {FlushChannel, implicit flush on chan close} -setup {
    file delete $path(test1)
    set l ""
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf -eofchar {}
    chan puts $f hello
    lappend l [file size $path(test1)]
    chan close $f
    lappend l [file size $path(test1)]
} -result {0 6}
test chan-io-27.4 {FlushChannel, implicit flush when buffer fills} -setup {
    file delete $path(test1)
    set l ""
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf -eofchar {}
    chan configure $f -buffersize 60
    lappend l [file size $path(test1)]
    for {set i 0} {$i < 12} {incr i} {
	chan puts $f hello
    }
    lappend l [file size $path(test1)]
    chan flush $f
    lappend l [file size $path(test1)]
} -cleanup {
    chan close $f
} -result {0 60 72}
test chan-io-27.5 {FlushChannel, implicit flush when buffer fills and on chan close} -setup {
    file delete $path(test1)
    set l ""
} -constraints {unixOrPc} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf -buffersize 60 -eofchar {}
    lappend l [file size $path(test1)]
    for {set i 0} {$i < 12} {incr i} {
	chan puts $f hello
    }
    lappend l [file size $path(test1)]
    chan close $f
    lappend l [file size $path(test1)]
} -result {0 60 72}
set path(pipe)   [makeFile {} pipe]
set path(output) [makeFile {} output]
test chan-io-27.6 {FlushChannel, async flushing, async chan close} -setup {
    file delete $path(pipe)
    file delete $path(output)
} -constraints {stdio asyncPipeChan Close openpipe} -body {
    set f [open $path(pipe) w]
    chan puts $f "set f \[[list open $path(output) w]]"
    chan puts $f {
	chan configure $f -translation lf -buffering none -eofchar {}
	while {![chan eof stdin]} {
	    after 20
	    chan puts -nonewline $f [chan read stdin 1024]
	}
	chan close $f
    }
    chan close $f
    set x 01234567890123456789012345678901
    for {set i 0} {$i < 11} {incr i} {
        set x "$x$x"
    }
    set f [open $path(output) w]
    chan close $f
    set f [openpipe w $path(pipe)]
    chan configure $f -blocking off
    chan puts -nonewline $f $x
    chan close $f
    set counter 0
    while {([file size $path(output)] < 65536) && ($counter < 1000)} {
	after 20 [list incr [namespace which -variable counter]]
	vwait [namespace which -variable counter]
    }
    if {$counter == 1000} {
        set result "file size only [file size $path(output)]"
    } else {
        set result ok
    }
} -result ok

# Tests closing a channel. The functions tested are Chan CloseChannel and
# Tcl_Chan Close.

test chan-io-28.1 {Chan CloseChannel called when all references are dropped} -setup {
    file delete $path(test1)
    set l ""
} -constraints {testchannel} -body {
    set f [open $path(test1) w]
    interp create x
    interp share "" $f x
    lappend l [testchannel refcount $f]
    x eval chan close $f
    interp delete x
    lappend l [testchannel refcount $f]
} -cleanup {
    chan close $f
} -result {2 1}
test chan-io-28.2 {Chan CloseChannel called when all references are dropped} -setup {
    file delete $path(test1)
} -body {
    set f [open $path(test1) w]
    interp create x
    interp share "" $f x
    chan puts -nonewline $f abc
    chan close $f
    x eval chan puts $f def
    x eval chan close $f
    interp delete x
    set f [open $path(test1) r]
    chan gets $f
} -cleanup {
    chan close $f
} -result abcdef
test chan-io-28.3 {Chan CloseChannel, not called before output queue is empty} -setup {
    file delete $path(pipe)
    file delete $path(output)
} -constraints {stdio asyncPipeChan Close nonPortable openpipe} -body {
    set f [open $path(pipe) w]
    chan puts $f {
	# Need to not have eof char appended on chan close, because the other
	# side of the pipe already chan closed, so that writing would cause an
	# error "invalid file".
	chan configure stdout -eofchar {}
	chan configure stderr -eofchar {}
	set f [open $path(output) w]
	chan configure $f -translation lf -buffering none
	for {set x 0} {$x < 20} {incr x} {
	    after 20
	    chan puts -nonewline $f [chan read stdin 1024]
	}
	chan close $f
    }
    chan close $f
    set x 01234567890123456789012345678901
    for {set i 0} {$i < 11} {incr i} {
        set x "$x$x"
    }
    set f [open $path(output) w]
    chan close $f
    set f [openpipe r+ $path(pipe)]
    chan configure $f -blocking off -eofchar {}
    chan puts -nonewline $f $x
    chan close $f
    set counter 0
    while {([file size $path(output)] < 20480) && ($counter < 1000)} {
	after 20 [list incr [namespace which -variable counter]]
	vwait [namespace which -variable counter]
    }
    if {$counter == 1000} {
        set result probably_broken
    } else {
        set result ok
    }
} -result ok
test chan-io-28.4 {Tcl_Chan Close} -constraints {testchannel} -setup {
    file delete $path(test1)
    set l ""
} -body {
    lappend l [lsort [testchannel open]]
    set f [open $path(test1) w]
    lappend l [lsort [testchannel open]]
    chan close $f
    lappend l [lsort [testchannel open]]
    set x [list $consoleFileNames \
		[lsort [list {*}$consoleFileNames $f]] \
		$consoleFileNames]
    expr {$l eq $x ? "ok" : "{$l} != {$x}"}
} -result ok
test chan-io-28.5 {Tcl_Chan Close vs standard handles} -setup {
    file delete $path(script)
} -constraints {stdio unix testchannel openpipe} -body {
    set f [open $path(script) w]
    chan puts $f {
	chan close stdin
	chan puts [testchannel open]
    }
    chan close $f
    set f [openpipe r $path(script)]
    set l [chan gets $f]
    chan close $f
    lsort $l
} -result {file1 file2}
test chan-io-28.6 {Tcl_CloseEx (half-close) pipe} -setup {
    set cat [makeFile {
	fconfigure stdout -buffering line
	while {[gets stdin line] >= 0} {puts $line}
	puts DONE
	exit 0
    } cat.tcl]
    variable done
} -body {
    set ff [openpipe r+ $cat]
    puts $ff Hey
    close $ff w
    set timer [after 1000 [namespace code {set done Failed}]]
    set acc {}
    fileevent $ff readable [namespace code {
	if {[gets $ff line] < 0} {
	    set done Succeeded
	} else {
	    lappend acc $line
	}
    }]
    vwait [namespace which -variable done]
    after cancel $timer
    close $ff r
    list $done $acc
} -cleanup {
    removeFile cat.tcl
} -result {Succeeded {Hey DONE}}
test chan-io-28.7 {Tcl_CloseEx (half-close) socket} -setup {
    set echo [makeFile {
	proc accept {s args} {set ::sok $s}
	set s [socket -server accept 0]
	puts [lindex [fconfigure $s -sockname] 2]
	flush stdout
	vwait ::sok
	fconfigure $sok -buffering line
	while {[gets $sok line]>=0} {puts $sok $line}
	puts $sok DONE
	exit 0
    } echo.tcl]
    variable done
    unset -nocomplain done
    set done ""
    set timer ""
    set ff [openpipe r $echo]
    gets $ff port
} -body {
    set s [socket 127.0.0.1 $port]
    puts $s Hey
    close $s w
    set timer [after 1000 [namespace code {set done Failed}]]
    set acc {}
    fileevent $s readable [namespace code {
	if {[gets $s line]<0} {
	    set done Succeeded
	} else {
	    lappend acc $line
	}
    }]
    vwait [namespace which -variable done]
    list $done $acc
} -cleanup {
    catch {close $s}
    close $ff
    after cancel $timer
    removeFile echo.tcl
} -result {Succeeded {Hey DONE}}

test chan-io-29.1 {Tcl_WriteChars, channel not writable} -body {
    chan puts stdin hello
} -returnCodes error -result {channel "stdin" wasn't opened for writing}
test chan-io-29.2 {Tcl_WriteChars, empty string} -setup {
    file delete $path(test1)
} -body {
    set f [open $path(test1) w]
    chan configure $f -eofchar {}
    chan puts -nonewline $f ""
    chan close $f
    file size $path(test1)
} -result 0
test chan-io-29.3 {Tcl_WriteChars, nonempty string} -setup {
    file delete $path(test1)
} -body {
    set f [open $path(test1) w]
    chan configure $f -eofchar {}
    chan puts -nonewline $f hello
    chan close $f
    file size $path(test1)
} -result 5
test chan-io-29.4 {Tcl_WriteChars, buffering in full buffering mode} -setup {
    file delete $path(test1)
    set l ""
} -constraints {testchannel} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf -buffering full -eofchar {}
    chan puts $f hello
    lappend l [testchannel outputbuffered $f]
    lappend l [file size $path(test1)]
    chan flush $f
    lappend l [testchannel outputbuffered $f]
    lappend l [file size $path(test1)]
} -cleanup {
    chan close $f
} -result {6 0 0 6}
test chan-io-29.5 {Tcl_WriteChars, buffering in line buffering mode} -setup {
    file delete $path(test1)
    set l ""
} -constraints {testchannel} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf -buffering line -eofchar {}
    chan puts -nonewline $f hello
    lappend l [testchannel outputbuffered $f]
    lappend l [file size $path(test1)]
    chan puts $f hello
    lappend l [testchannel outputbuffered $f]
    lappend l [file size $path(test1)]
} -cleanup {
    chan close $f
} -result {5 0 0 11}
test chan-io-29.6 {Tcl_WriteChars, buffering in no buffering mode} -setup {
    file delete $path(test1)
    set l ""
} -constraints {testchannel} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf -buffering none -eofchar {}
    chan puts -nonewline $f hello
    lappend l [testchannel outputbuffered $f]
    lappend l [file size $path(test1)]
    chan puts $f hello
    lappend l [testchannel outputbuffered $f]
    lappend l [file size $path(test1)]
} -cleanup {
    chan close $f
} -result {0 5 0 11}
test chan-io-29.7 {Tcl_Flush, full buffering} -setup {
    file delete $path(test1)
    set l ""
} -constraints {testchannel} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf -buffering full -eofchar {}
    chan puts -nonewline $f hello
    lappend l [testchannel outputbuffered $f]
    lappend l [file size $path(test1)]
    chan puts $f hello
    lappend l [testchannel outputbuffered $f]
    lappend l [file size $path(test1)]
    chan flush $f
    lappend l [testchannel outputbuffered $f]
    lappend l [file size $path(test1)]
} -cleanup {
    chan close $f
} -result {5 0 11 0 0 11}
test chan-io-29.8 {Tcl_Flush, full buffering} -setup {
    file delete $path(test1)
    set l ""
} -constraints {testchannel} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf -buffering line
    chan puts -nonewline $f hello
    lappend l [testchannel outputbuffered $f]
    lappend l [file size $path(test1)]
    chan flush $f
    lappend l [testchannel outputbuffered $f]
    lappend l [file size $path(test1)]
    chan puts $f hello
    lappend l [testchannel outputbuffered $f]
    lappend l [file size $path(test1)]
    chan flush $f
    lappend l [testchannel outputbuffered $f]
    lappend l [file size $path(test1)]
} -cleanup {
    chan close $f
} -result {5 0 0 5 0 11 0 11}
test chan-io-29.9 {Tcl_Flush, channel not writable} -body {
    chan flush stdin
} -returnCodes error -result {channel "stdin" wasn't opened for writing}
test chan-io-29.10 {Tcl_WriteChars, looping and buffering} -setup {
    file delete $path(test1)
} -body {
    set f1 [open $path(test1) w]
    chan configure $f1 -translation lf -eofchar {}
    set f2 [open $path(longfile) r]
    for {set x 0} {$x < 10} {incr x} {
	chan puts $f1 [chan gets $f2]
    }
    chan close $f2
    chan close $f1
    file size $path(test1)
} -result 387
test chan-io-29.11 {Tcl_WriteChars, no newline, implicit flush} -setup {
    file delete $path(test1)
} -body {
    set f1 [open $path(test1) w]
    chan configure $f1 -eofchar {}
    set f2 [open $path(longfile) r]
    for {set x 0} {$x < 10} {incr x} {
	chan puts -nonewline $f1 [chan gets $f2]
    }
    chan close $f1
    chan close $f2
    file size $path(test1)
} -result 377
test chan-io-29.12 {Tcl_WriteChars on a pipe} -setup {
    file delete $path(test1)
    file delete $path(pipe)
} -constraints {stdio openpipe} -body {
    set f1 [open $path(pipe) w]
    chan puts $f1 "set f1 \[[list open $path(longfile) r]]"
    chan puts $f1 {
	for {set x 0} {$x < 10} {incr x} {
	    chan puts [chan gets $f1]
	}
    }
    chan close $f1
    set f1 [openpipe r $path(pipe)]
    set f2 [open $path(longfile) r]
    set y ok
    for {set x 0} {$x < 10} {incr x} {
	set l1 [chan gets $f1]
	set l2 [chan gets $f2]
	if {$l1 ne $l2} {
	    set y broken:$x
	}
    }
    return $y
} -cleanup {
    chan close $f1
    chan close $f2
} -result ok
test chan-io-29.13 {Tcl_WriteChars to a pipe, line buffered} -setup {
    file delete $path(test1)
    file delete $path(pipe)
} -constraints {stdio openpipe} -body {
    set f1 [open $path(pipe) w]
    chan puts $f1 {
	chan puts [chan gets stdin]
	chan puts [chan gets stdin]
    }
    chan close $f1
    set y ok
    set f1 [openpipe r+ $path(pipe)]
    chan configure $f1 -buffering line
    set f2 [open $path(longfile) r]
    set line [chan gets $f2]
    chan puts $f1 $line
    set backline [chan gets $f1]
    if {$line ne $backline} {
	set y broken1
    }
    set line [chan gets $f2]
    chan puts $f1 $line
    set backline [chan gets $f1]
    if {$line ne $backline} {
	set y broken2
    }
    return $y
} -cleanup {
    chan close $f1
    chan close $f2
} -result ok
test chan-io-29.14 {Tcl_WriteChars, buffering and implicit flush at chan close} -setup {
    file delete $path(test3)
} -body {
    set f [open $path(test3) w]
    chan puts -nonewline $f "Text1"
    chan puts -nonewline $f " Text 2"
    chan puts $f " Text 3"
    chan close $f
    set f [open $path(test3) r]
    chan gets $f
} -cleanup {
    chan close $f
} -result {Text1 Text 2 Text 3}
test chan-io-29.15 {Tcl_Flush, channel not open for writing} -setup {
    file delete $path(test1)
    set fd [open $path(test1) w]
    chan close $fd
} -body {
    set fd [open $path(test1) r]
    chan flush $fd
} -returnCodes error -cleanup {
    catch {chan close $fd}
} -match glob -result {channel "*" wasn't opened for writing}
test chan-io-29.16 {Tcl_Flush on pipe opened only for reading} -setup {
    set fd [openpipe r cat longfile]
} -constraints {stdio openpipe} -body {
    chan flush $fd
} -returnCodes error -cleanup {
    catch {chan close $fd}
} -match glob -result {channel "*" wasn't opened for writing}
test chan-io-29.17 {Tcl_WriteChars buffers, then Tcl_Flush flushes} -setup {
    file delete $path(test1)
} -body {
    set f1 [open $path(test1) w]
    chan configure $f1 -translation lf
    chan puts $f1 hello
    chan puts $f1 hello
    chan puts $f1 hello
    chan flush $f1
    file size $path(test1)
} -cleanup {
    chan close $f1
} -result 18
test chan-io-29.18 {Tcl_WriteChars and Tcl_Flush intermixed} -setup {
    file delete $path(test1)
    set x ""
    set f1 [open $path(test1) w]
} -body {
    chan configure $f1 -translation lf
    chan puts $f1 hello
    chan puts $f1 hello
    chan puts $f1 hello
    chan flush $f1
    lappend x [file size $path(test1)]
    chan puts $f1 hello
    chan flush $f1
    lappend x [file size $path(test1)]
    chan puts $f1 hello
    chan flush $f1
    lappend x [file size $path(test1)]
} -cleanup {
    chan close $f1
} -result {18 24 30}
test chan-io-29.19 {Explicit and implicit flushes} -setup {
    file delete $path(test1)
} -body {
    set f1 [open $path(test1) w]
    chan configure $f1 -translation lf -eofchar {}
    set x ""
    chan puts $f1 hello
    chan puts $f1 hello
    chan puts $f1 hello
    chan flush $f1
    lappend x [file size $path(test1)]
    chan puts $f1 hello
    chan flush $f1
    lappend x [file size $path(test1)]
    chan puts $f1 hello
    chan close $f1
    lappend x [file size $path(test1)]
} -result {18 24 30}
test chan-io-29.20 {Implicit flush when buffer is full} -setup {
    file delete $path(test1)
} -body {
    set f1 [open $path(test1) w]
    chan configure $f1 -translation lf -eofchar {}
    set line "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
    for {set x 0} {$x < 100} {incr x} {
      chan puts $f1 $line
    }
    set z ""
    lappend z [file size $path(test1)]
    for {set x 0} {$x < 100} {incr x} {
	chan puts $f1 $line
    }
    lappend z [file size $path(test1)]
    chan close $f1
    lappend z [file size $path(test1)]
} -result {4096 12288 12600}
test chan-io-29.21 {Tcl_Flush to pipe} -setup {
    file delete $path(pipe)
} -constraints {stdio openpipe} -body {
    set f1 [open $path(pipe) w]
    chan puts $f1 {set x [chan read stdin 6]}
    chan puts $f1 {set cnt [string length $x]}
    chan puts $f1 {chan puts "read $cnt characters"}
    chan close $f1
    set f1 [openpipe r+ $path(pipe)]
    chan puts $f1 hello
    chan flush $f1
    chan gets $f1
} -cleanup {
    catch {chan close $f1}
} -result "read 6 characters"
test chan-io-29.22 {Tcl_Flush called at other end of pipe} -setup {
    file delete $path(pipe)
} -constraints {stdio openpipe} -body {
    set f1 [open $path(pipe) w]
    chan puts $f1 {
	chan configure stdout -buffering full
	chan puts hello
	chan puts hello
	chan flush stdout
	chan gets stdin
	chan puts bye
	chan flush stdout
    }
    chan close $f1
    set f1 [openpipe r+ $path(pipe)]
    set x ""
    lappend x [chan gets $f1]
    lappend x [chan gets $f1]
    chan puts $f1 hello
    chan flush $f1
    lappend x [chan gets $f1]
} -cleanup {
    chan close $f1
} -result {hello hello bye}
test chan-io-29.23 {Tcl_Flush and line buffering at end of pipe} -setup {
    file delete $path(pipe)
} -constraints {stdio openpipe} -body {
    set f1 [open $path(pipe) w]
    chan puts $f1 {
	chan puts hello
	chan puts hello
	chan gets stdin
	chan puts bye
    }
    chan close $f1
    set f1 [openpipe r+ $path(pipe)]
    set x ""
    lappend x [chan gets $f1]
    lappend x [chan gets $f1]
    chan puts $f1 hello
    chan flush $f1
    lappend x [chan gets $f1]
} -cleanup {
    chan close $f1
} -result {hello hello bye}
test chan-io-29.24 {Tcl_WriteChars and Tcl_Flush move end of file} -setup {
    variable x {}
} -body {
    set f [open $path(test3) w]
    chan puts $f "Line 1"
    chan puts $f "Line 2"
    set f2 [open $path(test3)]
    lappend x [chan read -nonewline $f2]
    chan close $f2
    chan flush $f
    set f2 [open $path(test3)]
    lappend x [chan read -nonewline $f2]
} -cleanup {
    chan close $f2
    chan close $f
} -result "{} {Line 1\nLine 2}"
test chan-io-29.25 {Implicit flush with Tcl_Flush to command pipelines} -setup {
    file delete $path(test3)
} -constraints {stdio openpipe fileevent} -body {
    set f [openpipe w $path(cat) | [interpreter] $path(cat) > $path(test3)]
    chan puts $f "Line 1"
    chan puts $f "Line 2"
    chan close $f
    after 100
    set f [open $path(test3) r]
    chan read $f
} -cleanup {
    chan close $f
} -result "Line 1\nLine 2\n"
test chan-io-29.26 {Tcl_Flush, Tcl_Write on bidirectional pipelines} -constraints {stdio unixExecs openpipe} -body {
    set f [open "|[list cat -u]" r+]
    chan puts $f "Line1"
    chan flush $f
    chan gets $f
} -cleanup {
    chan close $f
} -result {Line1}
test chan-io-29.27 {Tcl_Flush on chan closed pipeline} -setup {
    file delete $path(pipe)
    set f [open $path(pipe) w]
    chan puts $f {exit}
    chan close $f
} -constraints {stdio openpipe} -body {
    set f [openpipe r+ $path(pipe)]
    chan gets $f
    chan puts $f output
    after 50
    #
    # The flush below will get a SIGPIPE. This is an expected part of the test
    # and indicates that the test operates correctly. If you run this test
    # under a debugger, the signal will by intercepted unless you disable the
    # debugger's signal interception.
    #
    if {[catch {chan flush $f} msg]} {
	set x [list 1 $msg $::errorCode]
	catch {chan close $f}
    } elseif {[catch {chan close $f} msg]} {
	set x [list 1 $msg $::errorCode]
    } else {
	set x {this was supposed to fail and did not}
    }
    string tolower $x
} -match glob -result {1 {error flushing "*": broken pipe} {posix epipe {broken pipe}}}
test chan-io-29.28 {Tcl_WriteChars, lf mode} -setup {
    file delete $path(test1)
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf -eofchar {}
    chan puts $f hello\nthere\nand\nhere
    chan flush $f
    file size $path(test1)
} -cleanup {
    chan close $f
} -result 21
test chan-io-29.29 {Tcl_WriteChars, cr mode} -setup {
    file delete $path(test1)
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation cr -eofchar {}
    chan puts $f hello\nthere\nand\nhere
    chan close $f
    file size $path(test1)
} -result 21
test chan-io-29.30 {Tcl_WriteChars, crlf mode} -setup {
    file delete $path(test1)
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation crlf -eofchar {}
    chan puts $f hello\nthere\nand\nhere
    chan close $f
    file size $path(test1)
} -result 25
test chan-io-29.31 {Tcl_WriteChars, background flush} -setup {
    file delete $path(pipe)
    file delete $path(output)
} -constraints {stdio openpipe} -body {
    set f [open $path(pipe) w]
    chan puts $f "set f \[[list open $path(output)  w]]"
    chan puts $f {chan configure $f -translation lf}
    set x [list while {![chan eof stdin]}]
    set x "$x {"
    chan puts $f $x
    chan puts $f {  chan puts -nonewline $f [chan read stdin 4096]}
    chan puts $f {  chan flush $f}
    chan puts $f "}"
    chan puts $f {chan close $f}
    chan close $f
    set x 01234567890123456789012345678901
    for {set i 0} {$i < 11} {incr i} {
	set x "$x$x"
    }
    set f [open $path(output) w]
    chan close $f
    set f [openpipe r+ $path(pipe)]
    chan configure $f -blocking off
    chan puts -nonewline $f $x
    chan close $f
    set counter 0
    while {([file size $path(output)] < 65536) && ($counter < 1000)} {
	after 10 [list incr [namespace which -variable counter]]
	vwait [namespace which -variable counter]
    }
    if {$counter == 1000} {
	set result "file size only [file size $path(output)]"
    } else {
	set result ok
    }
    # allow a little time for the background process to chan close.
    # otherwise, the following test fails on the [file delete $path(output)
    # on Windows because a process still has the file open.
    after 100 set v 1; vwait v
    return $result
} -result ok
test chan-io-29.32 {Tcl_WriteChars, background flush to slow reader} -setup {
    file delete $path(pipe)
    file delete $path(output)
} -constraints {stdio asyncPipeChan Close openpipe} -body {
    set f [open $path(pipe) w]
    chan puts $f "set f \[[list open $path(output) w]]"
    chan puts $f {chan configure $f -translation lf}
    set x [list while {![chan eof stdin]}]
    set x "$x \{"
    chan puts $f $x
    chan puts $f {  after 20}
    chan puts $f {  chan puts -nonewline $f [chan read stdin 1024]}
    chan puts $f {  chan flush $f}
    chan puts $f "\}"
    chan puts $f {chan close $f}
    chan close $f
    set x 01234567890123456789012345678901
    for {set i 0} {$i < 11} {incr i} {
	set x "$x$x"
    }
    set f [open $path(output) w]
    chan close $f
    set f [openpipe r+ $path(pipe)]
    chan configure $f -blocking off
    chan puts -nonewline $f $x
    chan close $f
    set counter 0
    while {([file size $path(output)] < 65536) && ($counter < 1000)} {
	after 20 [list incr [namespace which -variable counter]]
	vwait [namespace which -variable counter]
    }
    if {$counter == 1000} {
	set result "file size only [file size $path(output)]"
    } else {
	set result ok
    }
} -result ok
test chan-io-29.33 {Tcl_Flush, implicit flush on exit} -setup {
    set f [open $path(script) w]
    chan puts $f "set f \[[list open $path(test1) w]]"
    chan puts $f {chan configure $f -translation lf
	chan puts $f hello
	chan puts $f bye
	chan puts $f strange
    }
    chan close $f
} -constraints exec -body {
    exec [interpreter] $path(script)
    set f [open $path(test1) r]
    chan read $f
} -cleanup {
    chan close $f
} -result "hello\nbye\nstrange\n"
test chan-io-29.34 {Tcl_Chan Close, async flush on chan close, using sockets} -setup {
    variable c 0
    variable x running
    set l abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz
    proc writelots {s l} {
	for {set i 0} {$i < 2000} {incr i} {
	    chan puts $s $l
	}
    }
} -constraints {socket tempNotMac fileevent} -body {
    proc accept {s a p} {
	variable x
	chan event $s readable [namespace code [list readit $s]]
	chan configure $s -blocking off
	set x accepted
    }
    proc readit {s} {
	variable c
	variable x
	set l [chan gets $s]
	if {[chan eof $s]} {
	    chan close $s
	    set x done
	} elseif {([string length $l] > 0) || ![chan blocked $s]} {
	    incr c
	}
    }
    set ss [socket -server [namespace code accept] -myaddr 127.0.0.1 0]
    set cs [socket 127.0.0.1 [lindex [chan configure $ss -sockname] 2]]
    vwait [namespace which -variable x]
    chan configure $cs -blocking off
    writelots $cs $l
    chan close $cs
    chan close $ss
    vwait [namespace which -variable x]
    return $c
} -result 2000
test chan-io-29.35 {Tcl_Chan Close vs chan event vs multiple interpreters} -setup {
    catch {interp delete x}
    catch {interp delete y}
} -constraints {socket tempNotMac fileevent} -body {
    # On Mac, this test screws up sockets such that subsequent tests using
    # port 2828 either cause errors or panic().
    interp create x
    interp create y
    set s [socket -server [namespace code accept] -myaddr 127.0.0.1 0]
    proc accept {s a p} {
	chan puts $s hello
	chan close $s
    }
    set c [socket 127.0.0.1 [lindex [chan configure $s -sockname] 2]]
    interp share {} $c x
    interp share {} $c y
    chan close $c
    x eval {
	proc readit {s} {
	    chan gets $s
	    if {[chan eof $s]} {
		chan close $s
	    }
	}
    }
    y eval {
	proc readit {s} {
	    chan gets $s
	    if {[chan eof $s]} {
		chan close $s
	    }
	}
    }
    x eval "chan event $c readable \{readit $c\}"
    y eval "chan event $c readable \{readit $c\}"
    y eval [list chan close $c]
    update
} -cleanup {
    chan close $s
    interp delete x
    interp delete y
} -result ""

# Test end of line translations. Procedures tested are Tcl_Write, Tcl_Read.

test chan-io-30.1 {Tcl_Write lf, Tcl_Read lf} -setup {
    file delete $path(test1)
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf
    chan puts $f hello\nthere\nand\nhere
    chan close $f
    set f [open $path(test1) r]
    chan configure $f -translation lf
    chan read $f
} -cleanup {
    chan close $f
} -result "hello\nthere\nand\nhere\n"
test chan-io-30.2 {Tcl_Write lf, Tcl_Read cr} -setup {
    file delete $path(test1)
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf
    chan puts $f hello\nthere\nand\nhere
    chan close $f
    set f [open $path(test1) r]
    chan configure $f -translation cr
    chan read $f
} -cleanup {
    chan close $f
} -result "hello\nthere\nand\nhere\n"
test chan-io-30.3 {Tcl_Write lf, Tcl_Read crlf} -setup {
    file delete $path(test1)
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf
    chan puts $f hello\nthere\nand\nhere
    chan close $f
    set f [open $path(test1) r]
    chan configure $f -translation crlf
    chan read $f
} -cleanup {
    chan close $f
} -result "hello\nthere\nand\nhere\n"
test chan-io-30.4 {Tcl_Write cr, Tcl_Read cr} -setup {
    file delete $path(test1)
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation cr
    chan puts $f hello\nthere\nand\nhere
    chan close $f
    set f [open $path(test1) r]
    chan configure $f -translation cr
    chan read $f
} -cleanup {
    chan close $f
} -result "hello\nthere\nand\nhere\n"
test chan-io-30.5 {Tcl_Write cr, Tcl_Read lf} -setup {
    file delete $path(test1)
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation cr
    chan puts $f hello\nthere\nand\nhere
    chan close $f
    set f [open $path(test1) r]
    chan configure $f -translation lf
    chan read $f
} -cleanup {
    chan close $f
} -result "hello\rthere\rand\rhere\r"
test chan-io-30.6 {Tcl_Write cr, Tcl_Read crlf} -setup {
    file delete $path(test1)
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation cr
    chan puts $f hello\nthere\nand\nhere
    chan close $f
    set f [open $path(test1) r]
    chan configure $f -translation crlf
    chan read $f
} -cleanup {
    chan close $f
} -result "hello\rthere\rand\rhere\r"
test chan-io-30.7 {Tcl_Write crlf, Tcl_Read crlf} -setup {
    file delete $path(test1)
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation crlf
    chan puts $f hello\nthere\nand\nhere
    chan close $f
    set f [open $path(test1) r]
    chan configure $f -translation crlf
    chan read $f
} -cleanup {
    chan close $f
} -result "hello\nthere\nand\nhere\n"
test chan-io-30.8 {Tcl_Write crlf, Tcl_Read lf} -setup {
    file delete $path(test1)
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation crlf
    chan puts $f hello\nthere\nand\nhere
    chan close $f
    set f [open $path(test1) r]
    chan configure $f -translation lf
    chan read $f
} -cleanup {
    chan close $f
} -result "hello\r\nthere\r\nand\r\nhere\r\n"
test chan-io-30.9 {Tcl_Write crlf, Tcl_Read cr} -setup {
    file delete $path(test1)
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation crlf
    chan puts $f hello\nthere\nand\nhere
    chan close $f
    set f [open $path(test1) r]
    chan configure $f -translation cr
    chan read $f
} -cleanup {
    chan close $f
} -result "hello\n\nthere\n\nand\n\nhere\n\n"
test chan-io-30.10 {Tcl_Write lf, Tcl_Read auto} -setup {
    file delete $path(test1)
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf
    chan puts $f hello\nthere\nand\nhere
    chan close $f
    set f [open $path(test1) r]
    list [chan read $f] [chan configure $f -translation]
} -cleanup {
    chan close $f
} -result {{hello
there
and
here
} auto}
test chan-io-30.11 {Tcl_Write cr, Tcl_Read auto} -setup {
    file delete $path(test1)
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation cr
    chan puts $f hello\nthere\nand\nhere
    chan close $f
    set f [open $path(test1) r]
    list [chan read $f] [chan configure $f -translation]
} -cleanup {
    chan close $f
} -result {{hello
there
and
here
} auto}
test chan-io-30.12 {Tcl_Write crlf, Tcl_Read auto} -setup {
    file delete $path(test1)
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation crlf
    chan puts $f hello\nthere\nand\nhere
    chan close $f
    set f [open $path(test1) r]
    list [chan read $f] [chan configure $f -translation]
} -cleanup {
    chan close $f
} -result {{hello
there
and
here
} auto}
test chan-io-30.13 {Tcl_Write crlf on block boundary, Tcl_Read auto} -setup {
    file delete $path(test1)
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation crlf
    set line "123456789ABCDE"	;# 14 char plus crlf
    chan puts -nonewline $f x	;# shift crlf across block boundary
    for {set i 0} {$i < 700} {incr i} {
	chan puts $f $line
    }
    chan close $f
    set f [open $path(test1) r]
    chan configure $f -translation auto
    string length [chan read $f]
} -cleanup {
    chan close $f
} -result [expr 700*15+1]
test chan-io-30.14 {Tcl_Write crlf on block boundary, Tcl_Read crlf} -setup {
    file delete $path(test1)
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation crlf
    set line "123456789ABCDE"	;# 14 char plus crlf
    chan puts -nonewline $f x	;# shift crlf across block boundary
    for {set i 0} {$i < 700} {incr i} {
	chan puts $f $line
    }
    chan close $f
    set f [open $path(test1) r]
    chan configure $f -translation crlf
    string length [chan read $f]
} -cleanup {
    chan close $f
} -result [expr 700*15+1]
test chan-io-30.15 {Tcl_Write mixed, Tcl_Read auto} -setup {
    file delete $path(test1)
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf
    chan puts $f hello\nthere\nand\rhere
    chan close $f
    set f [open $path(test1) r]
    chan configure $f -translation auto
    chan read $f
} -cleanup {
    chan close $f
} -result {hello
there
and
here
}
test chan-io-30.16 {Tcl_Write ^Z at end, Tcl_Read auto} -setup {
    file delete $path(test1)
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf
    chan puts -nonewline $f hello\nthere\nand\rhere\n\x1a
    chan close $f
    set f [open $path(test1) r]
    chan configure $f -eofchar \x1a -translation auto
    chan read $f
} -cleanup {
    chan close $f
} -result {hello
there
and
here
}
test chan-io-30.17 {Tcl_Write, implicit ^Z at end, Tcl_Read auto} -setup {
    file delete $path(test1)
} -constraints {win} -body {
    set f [open $path(test1) w]
    chan configure $f -eofchar \x1a -translation lf
    chan puts $f hello\nthere\nand\rhere
    chan close $f
    set f [open $path(test1) r]
    chan configure $f -eofchar \x1a -translation auto
    chan read $f
} -cleanup {
    chan close $f
} -result {hello
there
and
here
}
test chan-io-30.18 {Tcl_Write, ^Z in middle, Tcl_Read auto} -setup {
    file delete $path(test1)
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf
    set s [format "abc\ndef\n%cghi\nqrs" 26]
    chan puts $f $s
    chan close $f
    set f [open $path(test1) r]
    chan configure $f -eofchar \x1a -translation auto
    set l ""
    lappend l [chan gets $f]
    lappend l [chan gets $f]
    lappend l [chan eof $f]
    lappend l [chan gets $f]
    lappend l [chan eof $f]
    lappend l [chan gets $f]
    lappend l [chan eof $f]
} -cleanup {
    chan close $f
} -result {abc def 0 {} 1 {} 1}
test chan-io-30.19 {Tcl_Write, ^Z no newline in middle, Tcl_Read auto} -setup {
    file delete $path(test1)
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf
    set s [format "abc\ndef\n%cghi\nqrs" 26]
    chan puts $f $s
    chan close $f
    set f [open $path(test1) r]
    chan configure $f -eofchar \x1a -translation auto
    set l ""
    lappend l [chan gets $f]
    lappend l [chan gets $f]
    lappend l [chan eof $f]
    lappend l [chan gets $f]
    lappend l [chan eof $f]
    lappend l [chan gets $f]
    lappend l [chan eof $f]
} -cleanup {
    chan close $f
} -result {abc def 0 {} 1 {} 1}
test chan-io-30.20 {Tcl_Write, ^Z in middle ignored, Tcl_Read lf} -setup {
    file delete $path(test1)
    set l ""
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf -eofchar {}
    chan puts $f [format "abc\ndef\n%cghi\nqrs" 26]
    chan close $f
    set f [open $path(test1) r]
    chan configure $f -translation lf -eofchar {}
    lappend l [chan gets $f]
    lappend l [chan gets $f]
    lappend l [chan eof $f]
    lappend l [chan gets $f]
    lappend l [chan eof $f]
    lappend l [chan gets $f]
    lappend l [chan eof $f]
    lappend l [chan gets $f]
    lappend l [chan eof $f]
} -cleanup {
    chan close $f
} -result "abc def 0 \x1aghi 0 qrs 0 {} 1"
test chan-io-30.21 {Tcl_Write, ^Z in middle ignored, Tcl_Read cr} -setup {
    file delete $path(test1)
    set l ""
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf -eofchar {}
    chan puts $f [format "abc\ndef\n%cghi\nqrs" 26]
    chan close $f
    set f [open $path(test1) r]
    chan configure $f -translation cr -eofchar {}
    set x [chan gets $f]
    lappend l [string equal $x "abc\ndef\n\x1aghi\nqrs\n"]
    lappend l [chan eof $f]
    lappend l [chan gets $f]
    lappend l [chan eof $f]
} -cleanup {
    chan close $f
} -result {1 1 {} 1}
test chan-io-30.22 {Tcl_Write, ^Z in middle ignored, Tcl_Read crlf} -setup {
    file delete $path(test1)
    set l ""
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf -eofchar {}
    chan puts $f [format "abc\ndef\n%cghi\nqrs" 26]
    chan close $f
    set f [open $path(test1) r]
    chan configure $f -translation crlf -eofchar {}
    set x [chan gets $f]
    lappend l [string equal $x "abc\ndef\n\x1aghi\nqrs\n"]
    lappend l [chan eof $f]
    lappend l [chan gets $f]
    lappend l [chan eof $f]
} -cleanup {
    chan close $f
} -result {1 1 {} 1}
test chan-io-30.23 {Tcl_Write lf, ^Z in middle, Tcl_Read auto} -setup {
    file delete $path(test1)
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf
    chan puts $f [format abc\ndef\n%cqrs\ntuv 26]
    chan close $f
    set f [open $path(test1) r]
    chan configure $f -translation auto -eofchar \x1a
    list [string length [chan read $f]] [chan eof $f]
} -cleanup {
    chan close $f
} -result {8 1}
test chan-io-30.24 {Tcl_Write lf, ^Z in middle, Tcl_Read lf} -setup {
    file delete $path(test1)
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf
    set c [format abc\ndef\n%cqrs\ntuv 26]
    chan puts $f $c
    chan close $f
    set f [open $path(test1) r]
    chan configure $f -translation lf -eofchar \x1a
    list [string length [chan read $f]] [chan eof $f]
} -cleanup {
    chan close $f
} -result {8 1}
test chan-io-30.25 {Tcl_Write cr, ^Z in middle, Tcl_Read auto} -setup {
    file delete $path(test1)
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation cr
    set c [format abc\ndef\n%cqrs\ntuv 26]
    chan puts $f $c
    chan close $f
    set f [open $path(test1) r]
    chan configure $f -translation auto -eofchar \x1a
    list [string length [chan read $f]] [chan eof $f]
} -cleanup {
    chan close $f
} -result {8 1}
test chan-io-30.26 {Tcl_Write cr, ^Z in middle, Tcl_Read cr} -setup {
    file delete $path(test1)
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation cr
    set c [format abc\ndef\n%cqrs\ntuv 26]
    chan puts $f $c
    chan close $f
    set f [open $path(test1) r]
    chan configure $f -translation cr -eofchar \x1a
    list [string length [chan read $f]] [chan eof $f]
} -cleanup {
    chan close $f
} -result {8 1}
test chan-io-30.27 {Tcl_Write crlf, ^Z in middle, Tcl_Read auto} -setup {
    file delete $path(test1)
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation crlf
    set c [format abc\ndef\n%cqrs\ntuv 26]
    chan puts $f $c
    chan close $f
    set f [open $path(test1) r]
    chan configure $f -translation auto -eofchar \x1a
    list [string length [chan read $f]] [chan eof $f]
} -cleanup {
    chan close $f
} -result {8 1}
test chan-io-30.28 {Tcl_Write crlf, ^Z in middle, Tcl_Read crlf} -setup {
    file delete $path(test1)
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation crlf
    set c [format abc\ndef\n%cqrs\ntuv 26]
    chan puts $f $c
    chan close $f
    set f [open $path(test1) r]
    chan configure $f -translation crlf -eofchar \x1a
    list [string length [chan read $f]] [chan eof $f]
} -cleanup {
    chan close $f
} -result {8 1}

# Test end of line translations. Functions tested are Tcl_Write and
# Tcl_Gets.

test chan-io-31.1 {Tcl_Write lf, Tcl_Gets auto} -setup {
    file delete $path(test1)
    set l ""
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf
    chan puts $f hello\nthere\nand\nhere
    chan close $f
    set f [open $path(test1) r]
    lappend l [chan gets $f]
    lappend l [chan tell $f]
    lappend l [chan configure $f -translation]
    lappend l [chan gets $f]
    lappend l [chan tell $f]
    lappend l [chan configure $f -translation]
} -cleanup {
    chan close $f
} -result {hello 6 auto there 12 auto}
test chan-io-31.2 {Tcl_Write cr, Tcl_Gets auto} -setup {
    file delete $path(test1)
    set l ""
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation cr
    chan puts $f hello\nthere\nand\nhere
    chan close $f
    set f [open $path(test1) r]
    lappend l [chan gets $f]
    lappend l [chan tell $f]
    lappend l [chan configure $f -translation]
    lappend l [chan gets $f]
    lappend l [chan tell $f]
    lappend l [chan configure $f -translation]
} -cleanup {
    chan close $f
} -result {hello 6 auto there 12 auto}
test chan-io-31.3 {Tcl_Write crlf, Tcl_Gets auto} -setup {
    file delete $path(test1)
    set l ""
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation crlf
    chan puts $f hello\nthere\nand\nhere
    chan close $f
    set f [open $path(test1) r]
    lappend l [chan gets $f]
    lappend l [chan tell $f]
    lappend l [chan configure $f -translation]
    lappend l [chan gets $f]
    lappend l [chan tell $f]
    lappend l [chan configure $f -translation]
} -cleanup {
    chan close $f
} -result {hello 7 auto there 14 auto}
test chan-io-31.4 {Tcl_Write lf, Tcl_Gets lf} -setup {
    file delete $path(test1)
    set l ""
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf
    chan puts $f hello\nthere\nand\nhere
    chan close $f
    set f [open $path(test1) r]
    chan configure $f -translation lf
    lappend l [chan gets $f]
    lappend l [chan tell $f]
    lappend l [chan configure $f -translation]
    lappend l [chan gets $f]
    lappend l [chan tell $f]
    lappend l [chan configure $f -translation]
} -cleanup {
    chan close $f
} -result {hello 6 lf there 12 lf}
test chan-io-31.5 {Tcl_Write lf, Tcl_Gets cr} -setup {
    file delete $path(test1)
    set l ""
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf
    chan puts $f hello\nthere\nand\nhere
    chan close $f
    set f [open $path(test1) r]
    chan configure $f -translation cr
    lappend l [string length [chan gets $f]]
    lappend l [chan tell $f]
    lappend l [chan configure $f -translation]
    lappend l [chan eof $f]
    lappend l [chan gets $f]
    lappend l [chan tell $f]
    lappend l [chan configure $f -translation]
    lappend l [chan eof $f]
} -cleanup {
    chan close $f
} -result {21 21 cr 1 {} 21 cr 1}
test chan-io-31.6 {Tcl_Write lf, Tcl_Gets crlf} -setup {
    file delete $path(test1)
    set l ""
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf
    chan puts $f hello\nthere\nand\nhere
    chan close $f
    set f [open $path(test1) r]
    chan configure $f -translation crlf
    lappend l [string length [chan gets $f]]
    lappend l [chan tell $f]
    lappend l [chan configure $f -translation]
    lappend l [chan eof $f]
    lappend l [chan gets $f]
    lappend l [chan tell $f]
    lappend l [chan configure $f -translation]
    lappend l [chan eof $f]
} -cleanup {
    chan close $f
} -result {21 21 crlf 1 {} 21 crlf 1}
test chan-io-31.7 {Tcl_Write cr, Tcl_Gets cr} -setup {
    file delete $path(test1)
    set l ""
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation cr
    chan puts $f hello\nthere\nand\nhere
    chan close $f
    set f [open $path(test1) r]
    chan configure $f -translation cr
    lappend l [chan gets $f]
    lappend l [chan tell $f]
    lappend l [chan configure $f -translation]
    lappend l [chan eof $f]
    lappend l [chan gets $f]
    lappend l [chan tell $f]
    lappend l [chan configure $f -translation]
    lappend l [chan eof $f]
} -cleanup {
    chan close $f
} -result {hello 6 cr 0 there 12 cr 0}
test chan-io-31.8 {Tcl_Write cr, Tcl_Gets lf} -setup {
    file delete $path(test1)
    set l ""
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation cr
    chan puts $f hello\nthere\nand\nhere
    chan close $f
    set f [open $path(test1) r]
    chan configure $f -translation lf
    lappend l [string length [chan gets $f]]
    lappend l [chan tell $f]
    lappend l [chan configure $f -translation]
    lappend l [chan eof $f]
    lappend l [chan gets $f]
    lappend l [chan tell $f]
    lappend l [chan configure $f -translation]
    lappend l [chan eof $f]
} -cleanup {
    chan close $f
} -result {21 21 lf 1 {} 21 lf 1}
test chan-io-31.9 {Tcl_Write cr, Tcl_Gets crlf} -setup {
    file delete $path(test1)
    set l ""
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation cr
    chan puts $f hello\nthere\nand\nhere
    chan close $f
    set f [open $path(test1) r]
    chan configure $f -translation crlf
    lappend l [string length [chan gets $f]]
    lappend l [chan tell $f]
    lappend l [chan configure $f -translation]
    lappend l [chan eof $f]
    lappend l [chan gets $f]
    lappend l [chan tell $f]
    lappend l [chan configure $f -translation]
    lappend l [chan eof $f]
} -cleanup {
    chan close $f
} -result {21 21 crlf 1 {} 21 crlf 1}
test chan-io-31.10 {Tcl_Write crlf, Tcl_Gets crlf} -setup {
    file delete $path(test1)
    set l ""
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation crlf
    chan puts $f hello\nthere\nand\nhere
    chan close $f
    set f [open $path(test1) r]
    chan configure $f -translation crlf
    lappend l [chan gets $f]
    lappend l [chan tell $f]
    lappend l [chan configure $f -translation]
    lappend l [chan eof $f]
    lappend l [chan gets $f]
    lappend l [chan tell $f]
    lappend l [chan configure $f -translation]
    lappend l [chan eof $f]
} -cleanup {
    chan close $f
} -result {hello 7 crlf 0 there 14 crlf 0}
test chan-io-31.11 {Tcl_Write crlf, Tcl_Gets cr} -setup {
    file delete $path(test1)
    set l ""
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation crlf
    chan puts $f hello\nthere\nand\nhere
    chan close $f
    set f [open $path(test1) r]
    chan configure $f -translation cr
    lappend l [chan gets $f]
    lappend l [chan tell $f]
    lappend l [chan configure $f -translation]
    lappend l [chan eof $f]
    lappend l [string length [chan gets $f]]
    lappend l [chan tell $f]
    lappend l [chan configure $f -translation]
    lappend l [chan eof $f]
} -cleanup {
    chan close $f
} -result {hello 6 cr 0 6 13 cr 0}
test chan-io-31.12 {Tcl_Write crlf, Tcl_Gets lf} -setup {
    file delete $path(test1)
    set l ""
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation crlf
    chan puts $f hello\nthere\nand\nhere
    chan close $f
    set f [open $path(test1) r]
    chan configure $f -translation lf
    lappend l [string length [chan gets $f]]
    lappend l [chan tell $f]
    lappend l [chan configure $f -translation]
    lappend l [chan eof $f]
    lappend l [string length [chan gets $f]]
    lappend l [chan tell $f]
    lappend l [chan configure $f -translation]
    lappend l [chan eof $f]
} -cleanup {
    chan close $f
} -result {6 7 lf 0 6 14 lf 0}
test chan-io-31.13 {binary mode is synonym of lf mode} -setup {
    file delete $path(test1)
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation binary
    chan configure $f -translation
} -cleanup {
    chan close $f
} -result lf
#
# Test chan-io-9.14 has been removed because "auto" output translation mode is
# not supoprted.
#
test chan-io-31.14 {Tcl_Write mixed, Tcl_Gets auto} -setup {
    file delete $path(test1)
    set l ""
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf
    chan puts $f hello\nthere\rand\r\nhere
    chan close $f
    set f [open $path(test1) r]
    chan configure $f -translation auto
    lappend l [chan gets $f]
    lappend l [chan gets $f]
    lappend l [chan gets $f]
    lappend l [chan gets $f]
    lappend l [chan eof $f]
    lappend l [chan gets $f]
    lappend l [chan eof $f]
} -cleanup {
    chan close $f
} -result {hello there and here 0 {} 1}
test chan-io-31.15 {Tcl_Write mixed, Tcl_Gets auto} -setup {
    file delete $path(test1)
    set l ""
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf
    chan puts -nonewline $f hello\nthere\rand\r\nhere\r
    chan close $f
    set f [open $path(test1) r]
    chan configure $f -translation auto
    lappend l [chan gets $f]
    lappend l [chan gets $f]
    lappend l [chan gets $f]
    lappend l [chan gets $f]
    lappend l [chan eof $f]
    lappend l [chan gets $f]
    lappend l [chan eof $f]
} -cleanup {
    chan close $f
} -result {hello there and here 0 {} 1}
test chan-io-31.16 {Tcl_Write mixed, Tcl_Gets auto} -setup {
    file delete $path(test1)
    set l ""
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf
    chan puts -nonewline $f hello\nthere\rand\r\nhere\n
    chan close $f
    set f [open $path(test1) r]
    lappend l [chan gets $f]
    lappend l [chan gets $f]
    lappend l [chan gets $f]
    lappend l [chan gets $f]
    lappend l [chan eof $f]
    lappend l [chan gets $f]
    lappend l [chan eof $f]
} -cleanup {
    chan close $f
} -result {hello there and here 0 {} 1}
test chan-io-31.17 {Tcl_Write mixed, Tcl_Gets auto} -setup {
    file delete $path(test1)
    set l ""
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf
    chan puts -nonewline $f hello\nthere\rand\r\nhere\r\n
    chan close $f
    set f [open $path(test1) r]
    chan configure $f -translation auto
    lappend l [chan gets $f]
    lappend l [chan gets $f]
    lappend l [chan gets $f]
    lappend l [chan gets $f]
    lappend l [chan eof $f]
    lappend l [chan gets $f]
    lappend l [chan eof $f]
} -cleanup {
    chan close $f
} -result {hello there and here 0 {} 1}
test chan-io-31.18 {Tcl_Write ^Z at end, Tcl_Gets auto} -setup {
    file delete $path(test1)
    set l ""
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf
    chan puts $f [format "hello\nthere\nand\rhere\n\%c" 26]
    chan close $f
    set f [open $path(test1) r]
    chan configure $f -eofchar \x1a -translation auto
    lappend l [chan gets $f]
    lappend l [chan gets $f]
    lappend l [chan gets $f]
    lappend l [chan gets $f]
    lappend l [chan eof $f]
    lappend l [chan gets $f]
    lappend l [chan eof $f]
} -cleanup {
    chan close $f
} -result {hello there and here 0 {} 1}
test chan-io-31.19 {Tcl_Write, implicit ^Z at end, Tcl_Gets auto} -setup {
    file delete $path(test1)
    set l ""
} -body {
    set f [open $path(test1) w]
    chan configure $f -eofchar \x1a -translation lf
    chan puts $f hello\nthere\nand\rhere
    chan close $f
    set f [open $path(test1) r]
    chan configure $f -eofchar \x1a -translation auto
    lappend l [chan gets $f]
    lappend l [chan gets $f]
    lappend l [chan gets $f]
    lappend l [chan gets $f]
    lappend l [chan eof $f]
    lappend l [chan gets $f]
    lappend l [chan eof $f]
} -cleanup {
    chan close $f
} -result {hello there and here 0 {} 1}
test chan-io-31.20 {Tcl_Write, ^Z in middle, Tcl_Gets auto, eofChar} -setup {
    file delete $path(test1)
    set l ""
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf
    chan puts $f [format "abc\ndef\n%cqrs\ntuv" 26]
    chan close $f
    set f [open $path(test1) r]
    chan configure $f -eofchar \x1a
    chan configure $f -translation auto
    lappend l [chan gets $f]
    lappend l [chan gets $f]
    lappend l [chan eof $f]
    lappend l [chan gets $f]
    lappend l [chan eof $f]
} -cleanup {
    chan close $f
} -result {abc def 0 {} 1}
test chan-io-31.21 {Tcl_Write, no newline ^Z in middle, Tcl_Gets auto, eofChar} -setup {
    file delete $path(test1)
    set l ""
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf
    chan puts $f [format "abc\ndef\n%cqrs\ntuv" 26]
    chan close $f
    set f [open $path(test1) r]
    chan configure $f -eofchar \x1a -translation auto
    lappend l [chan gets $f]
    lappend l [chan gets $f]
    lappend l [chan eof $f]
    lappend l [chan gets $f]
    lappend l [chan eof $f]
} -cleanup {
    chan close $f
} -result {abc def 0 {} 1}
test chan-io-31.22 {Tcl_Write, ^Z in middle ignored, Tcl_Gets lf} -setup {
    file delete $path(test1)
    set l ""
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf -eofchar {}
    chan puts $f [format "abc\ndef\n%cqrs\ntuv" 26]
    chan close $f
    set f [open $path(test1) r]
    chan configure $f -translation lf -eofchar {}
    lappend l [chan gets $f]
    lappend l [chan gets $f]
    lappend l [chan eof $f]
    lappend l [chan gets $f]
    lappend l [chan eof $f]
    lappend l [chan gets $f]
    lappend l [chan eof $f]
    lappend l [chan gets $f]
    lappend l [chan eof $f]
} -cleanup {
    chan close $f
} -result "abc def 0 \x1aqrs 0 tuv 0 {} 1"
test chan-io-31.23 {Tcl_Write, ^Z in middle ignored, Tcl_Gets cr} -setup {
    file delete $path(test1)
    set l ""
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation cr -eofchar {}
    chan puts $f [format "abc\ndef\n%cqrs\ntuv" 26]
    chan close $f
    set f [open $path(test1) r]
    chan configure $f -translation cr -eofchar {}
    lappend l [chan gets $f]
    lappend l [chan gets $f]
    lappend l [chan eof $f]
    lappend l [chan gets $f]
    lappend l [chan eof $f]
    lappend l [chan gets $f]
    lappend l [chan eof $f]
    lappend l [chan gets $f]
    lappend l [chan eof $f]
} -cleanup {
    chan close $f
} -result "abc def 0 \x1aqrs 0 tuv 0 {} 1"
test chan-io-31.24 {Tcl_Write, ^Z in middle ignored, Tcl_Gets crlf} -setup {
    file delete $path(test1)
    set l ""
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation crlf -eofchar {}
    chan puts $f [format "abc\ndef\n%cqrs\ntuv" 26]
    chan close $f
    set f [open $path(test1) r]
    chan configure $f -translation crlf -eofchar {}
    lappend l [chan gets $f]
    lappend l [chan gets $f]
    lappend l [chan eof $f]
    lappend l [chan gets $f]
    lappend l [chan eof $f]
    lappend l [chan gets $f]
    lappend l [chan eof $f]
    lappend l [chan gets $f]
    lappend l [chan eof $f]
} -cleanup {
    chan close $f
} -result "abc def 0 \x1aqrs 0 tuv 0 {} 1"
test chan-io-31.25 {Tcl_Write lf, ^Z in middle, Tcl_Gets auto} -setup {
    file delete $path(test1)
    set l ""
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf
    chan puts $f [format "abc\ndef\n%cqrs\ntuv" 26]
    chan close $f
    set f [open $path(test1) r]
    chan configure $f -translation auto -eofchar \x1a
    lappend l [chan gets $f]
    lappend l [chan gets $f]
    lappend l [chan eof $f]
    lappend l [chan gets $f]
    lappend l [chan eof $f]
} -cleanup {
    chan close $f
} -result {abc def 0 {} 1}
test chan-io-31.26 {Tcl_Write lf, ^Z in middle, Tcl_Gets lf} -setup {
    file delete $path(test1)
    set l ""
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf
    chan puts $f [format "abc\ndef\n%cqrs\ntuv" 26]
    chan close $f
    set f [open $path(test1) r]
    chan configure $f -translation lf -eofchar \x1a
    lappend l [chan gets $f]
    lappend l [chan gets $f]
    lappend l [chan eof $f]
    lappend l [chan gets $f]
    lappend l [chan eof $f]
} -cleanup {
    chan close $f
} -result {abc def 0 {} 1}
test chan-io-31.27 {Tcl_Write cr, ^Z in middle, Tcl_Gets auto} -setup {
    file delete $path(test1)
    set l ""
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation cr -eofchar {}
    chan puts $f [format "abc\ndef\n%cqrs\ntuv" 26]
    chan close $f
    set f [open $path(test1) r]
    chan configure $f -translation auto -eofchar \x1a
    lappend l [chan gets $f]
    lappend l [chan gets $f]
    lappend l [chan eof $f]
    lappend l [chan gets $f]
    lappend l [chan eof $f]
} -cleanup {
    chan close $f
} -result {abc def 0 {} 1}
test chan-io-31.28 {Tcl_Write cr, ^Z in middle, Tcl_Gets cr} -setup {
    file delete $path(test1)
    set l ""
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation cr -eofchar {}
    chan puts $f [format "abc\ndef\n%cqrs\ntuv" 26]
    chan close $f
    set f [open $path(test1) r]
    chan configure $f -translation cr -eofchar \x1a
    lappend l [chan gets $f]
    lappend l [chan gets $f]
    lappend l [chan eof $f]
    lappend l [chan gets $f]
    lappend l [chan eof $f]
} -cleanup {
    chan close $f
} -result {abc def 0 {} 1}
test chan-io-31.29 {Tcl_Write crlf, ^Z in middle, Tcl_Gets auto} -setup {
    file delete $path(test1)
    set l ""
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation crlf -eofchar {}
    chan puts $f [format "abc\ndef\n%cqrs\ntuv" 26]
    chan close $f
    set f [open $path(test1) r]
    chan configure $f -translation auto -eofchar \x1a
    lappend l [chan gets $f]
    lappend l [chan gets $f]
    lappend l [chan eof $f]
    lappend l [chan gets $f]
    lappend l [chan eof $f]
} -cleanup {
    chan close $f
} -result {abc def 0 {} 1}
test chan-io-31.30 {Tcl_Write crlf, ^Z in middle, Tcl_Gets crlf} -setup {
    file delete $path(test1)
    set l ""
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation crlf -eofchar {}
    chan puts $f [format "abc\ndef\n%cqrs\ntuv" 26]
    chan close $f
    set f [open $path(test1) r]
    chan configure $f -translation crlf -eofchar \x1a
    lappend l [chan gets $f]
    lappend l [chan gets $f]
    lappend l [chan eof $f]
    lappend l [chan gets $f]
    lappend l [chan eof $f]
} -cleanup {
    chan close $f
} -result {abc def 0 {} 1}
test chan-io-31.31 {Tcl_Write crlf on block boundary, Tcl_Gets crlf} -setup {
    file delete $path(test1)
    set c ""
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation crlf
    set line "123456789ABCDE"	;# 14 char plus crlf
    chan puts -nonewline $f x	;# shift crlf across block boundary
    for {set i 0} {$i < 700} {incr i} {
	chan puts $f $line
    }
    chan close $f
    set f [open $path(test1) r]
    chan configure $f -translation crlf 
    while {[chan gets $f line] >= 0} {
	append c $line\n
    }
    chan close $f
    string length $c
} -result [expr 700*15+1]
test chan-io-31.32 {Tcl_Write crlf on block boundary, Tcl_Gets auto} -setup {
    file delete $path(test1)
    set c ""
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation crlf
    set line "123456789ABCDE"	;# 14 char plus crlf
    chan puts -nonewline $f x	;# shift crlf across block boundary
    for {set i 0} {$i < 700} {incr i} {
	chan puts $f $line
    }
    chan close $f
    set f [open $path(test1) r]
    chan configure $f -translation auto
    while {[chan gets $f line] >= 0} {
	append c $line\n
    }
    chan close $f
    string length $c
} -result [expr 700*15+1]

# Test Tcl_Read and buffering.

test chan-io-32.1 {Tcl_Read, channel not readable} -body {
    read stdout
} -returnCodes error -result {channel "stdout" wasn't opened for reading}
test chan-io-32.2 {Tcl_Read, zero byte count} {
    chan read stdin 0
} ""
test chan-io-32.3 {Tcl_Read, negative byte count} -setup {
    set f [open $path(longfile) r]
} -body {
    chan read $f -1
} -returnCodes error -cleanup {
    chan close $f
} -result {expected non-negative integer but got "-1"}
test chan-io-32.4 {Tcl_Read, positive byte count} -body {
    set f [open $path(longfile) r]
    string length [chan read $f 1024]
} -cleanup {
    chan close $f
} -result 1024
test chan-io-32.5 {Tcl_Read, multiple buffers} -body {
    set f [open $path(longfile) r]
    chan configure $f -buffersize 100
    string length [chan read $f 1024]
} -cleanup {
    chan close $f
} -result 1024
test chan-io-32.6 {Tcl_Read, very large read} {
    set f1 [open $path(longfile) r]
    set z [chan read $f1 1000000]
    chan close $f1
    set l [string length $z]
    set x ok
    set z [file size $path(longfile)]
    if {$z != $l} {
	set x "$z != $l"
    }
    set x
} ok
test chan-io-32.7 {Tcl_Read, nonblocking, file} {nonBlockFiles} {
    set f1 [open $path(longfile) r]
    chan configure $f1 -blocking off
    set z [chan read $f1 20]
    chan close $f1
    set l [string length $z]
    set x ok
    if {$l != 20} {
	set x "$l != 20"
    }
    set x
} ok
test chan-io-32.8 {Tcl_Read, nonblocking, file} {nonBlockFiles} {
    set f1 [open $path(longfile) r]
    chan configure $f1 -blocking off
    set z [chan read $f1 1000000]
    chan close $f1
    set x ok
    set l [string length $z]
    set z [file size $path(longfile)]
    if {$z != $l} {
	set x "$z != $l"
    }
    set x
} ok
test chan-io-32.9 {Tcl_Read, read to end of file} {
    set f1 [open $path(longfile) r]
    set z [chan read $f1]
    chan close $f1
    set l [string length $z]
    set x ok
    set z [file size $path(longfile)]
    if {$z != $l} {
	set x "$z != $l"
    }
    set x
} ok
test chan-io-32.10 {Tcl_Read from a pipe} -setup {
    file delete $path(pipe)
} -constraints {stdio openpipe} -body {
    set f1 [open $path(pipe) w]
    chan puts $f1 {chan puts [chan gets stdin]}
    chan close $f1
    set f1 [openpipe r+ $path(pipe)]
    chan puts $f1 hello
    chan flush $f1
    chan read $f1
} -cleanup {
    chan close $f1
} -result "hello\n"
test chan-io-32.11 {Tcl_Read from a pipe} -setup {
    file delete $path(pipe)
    set x ""
} -constraints {stdio openpipe} -body {
    set f1 [open $path(pipe) w]
    chan puts $f1 {chan puts [chan gets stdin]}
    chan puts $f1 {chan puts [chan gets stdin]}
    chan close $f1
    set f1 [openpipe r+ $path(pipe)]
    chan puts $f1 hello
    chan flush $f1
    lappend x [chan read $f1 6]
    chan puts $f1 hello
    chan flush $f1
    lappend x [chan read $f1]
} -cleanup {
    chan close $f1
} -result {{hello
} {hello
}}
test chan-io-32.12 {Tcl_Read, -nonewline} -setup {
    file delete $path(test1)
} -body {
    set f1 [open $path(test1) w]
    chan puts $f1 hello
    chan puts $f1 bye
    chan close $f1
    set f1 [open $path(test1) r]
    chan read -nonewline $f1
} -cleanup {
    chan close $f1
} -result {hello
bye}
test chan-io-32.13 {Tcl_Read, -nonewline} -setup {
    file delete $path(test1)
} -body {
    set f1 [open $path(test1) w]
    chan puts $f1 hello
    chan puts $f1 bye
    chan close $f1
    set f1 [open $path(test1) r]
    set c [chan read -nonewline $f1]
    list [string length $c] $c
} -cleanup {
    chan close $f1
} -result {9 {hello
bye}}
test chan-io-32.14 {Tcl_Read, reading in small chunks} -setup {
    file delete $path(test1)
} -body {
    set f [open $path(test1) w]
    chan puts $f "Two lines: this one"
    chan puts $f "and this one"
    chan close $f
    set f [open $path(test1)]
    list [chan read $f 1] [chan read $f 2] [chan read $f]
} -cleanup {
    chan close $f
} -result {T wo { lines: this one
and this one
}}
test chan-io-32.15 {Tcl_Read, asking for more input than available} -setup {
    file delete $path(test1)
} -body {
    set f [open $path(test1) w]
    chan puts $f "Two lines: this one"
    chan puts $f "and this one"
    chan close $f
    set f [open $path(test1)]
    chan read $f 100
} -cleanup {
    chan close $f
} -result {Two lines: this one
and this one
}
test chan-io-32.16 {Tcl_Read, read to end of file with -nonewline} -setup {
    file delete $path(test1)
} -body {
    set f [open $path(test1) w]
    chan puts $f "Two lines: this one"
    chan puts $f "and this one"
    chan close $f
    set f [open $path(test1)]
    chan read -nonewline $f
} -cleanup {
    chan close $f
} -result {Two lines: this one
and this one}

# Test Tcl_Gets.

test chan-io-33.1 {Tcl_Gets, reading what was written} -setup {
    file delete $path(test1)
} -body {
    set f1 [open $path(test1) w]
    chan puts $f1 "first line"
    chan close $f1
    set f1 [open $path(test1) r]
    chan gets $f1
} -cleanup {
    chan close $f1
} -result {first line}
test chan-io-33.2 {Tcl_Gets into variable} {
    set f1 [open $path(longfile) r]
    set c [chan gets $f1 x]
    set l [string length x]
    set z ok
    if {$l != $l} {
	set z broken
    }
    chan close $f1
    set z
} ok
test chan-io-33.3 {Tcl_Gets from pipe} -setup {
    file delete $path(pipe)
} -constraints {stdio openpipe} -body {
    set f1 [open $path(pipe) w]
    chan puts $f1 {chan puts [chan gets stdin]}
    chan close $f1
    set f1 [openpipe r+ $path(pipe)]
    chan puts $f1 hello
    chan flush $f1
    chan gets $f1
} -cleanup {
    chan close $f1
} -result hello
test chan-io-33.4 {Tcl_Gets with long line} -setup {
    file delete $path(test3)
} -body {
    set f [open $path(test3) w]
    chan puts -nonewline $f "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
    chan puts -nonewline $f "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
    chan puts -nonewline $f "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
    chan puts -nonewline $f "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
    chan puts $f "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
    chan close $f
    set f [open $path(test3)]
    chan gets $f
} -cleanup {
    chan close $f
} -result {abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ}
test chan-io-33.5 {Tcl_Gets with long line} -setup {
    set f [open $path(test3) w]
    puts -nonewline $f "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
    puts -nonewline $f "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
    puts -nonewline $f "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
    puts -nonewline $f "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
    puts $f "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
    close $f
} -body {
    set f [open $path(test3)]
    set x [chan gets $f y]
    chan close $f
    list $x $y
} -result {260 abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ}
test chan-io-33.6 {Tcl_Gets and end of file} -setup {
    file delete $path(test3)
    set x {}
} -body {
    set f [open $path(test3) w]
    chan puts -nonewline $f "Test1\nTest2"
    chan close $f
    set f [open $path(test3)]
    set y {}
    lappend x [chan gets $f y] $y
    set y {}
    lappend x [chan gets $f y] $y
    set y {}
    lappend x [chan gets $f y] $y
} -cleanup {
    chan close $f
} -result {5 Test1 5 Test2 -1 {}}
test chan-io-33.7 {Tcl_Gets and bad variable} -setup {
    set f [open $path(test3) w]
    chan puts $f "Line 1"
    chan puts $f "Line 2"
    chan close $f
    catch {unset x}
    set f [open $path(test3) r]
} -body {
    set x 24
    chan gets $f x(0)
} -returnCodes error -cleanup {
    chan close $f
} -result {can't set "x(0)": variable isn't array}
test chan-io-33.8 {Tcl_Gets, exercising double buffering} {
    set f [open $path(test3) w]
    chan configure $f -translation lf -eofchar {}
    set x ""
    for {set y 0} {$y < 99} {incr y} {set x "a$x"}
    for {set y 0} {$y < 100} {incr y} {chan puts $f $x}
    chan close $f
    set f [open $path(test3) r]
    chan configure $f -translation lf
    for {set y 0} {$y < 100} {incr y} {chan gets $f}
    chan close $f
    set y
} 100
test chan-io-33.9 {Tcl_Gets, exercising double buffering} {
    set f [open $path(test3) w]
    chan configure $f -translation lf -eofchar {}
    set x ""
    for {set y 0} {$y < 99} {incr y} {set x "a$x"}
    for {set y 0} {$y < 200} {incr y} {chan puts $f $x}
    chan close $f
    set f [open $path(test3) r]
    chan configure $f -translation lf
    for {set y 0} {$y < 200} {incr y} {chan gets $f}
    chan close $f
    set y
} 200
test chan-io-33.10 {Tcl_Gets, exercising double buffering} {
    set f [open $path(test3) w]
    chan configure $f -translation lf -eofchar {}
    set x ""
    for {set y 0} {$y < 99} {incr y} {set x "a$x"}
    for {set y 0} {$y < 300} {incr y} {chan puts $f $x}
    chan close $f
    set f [open $path(test3) r]
    chan configure $f -translation lf
    for {set y 0} {$y < 300} {incr y} {chan gets $f}
    chan close $f
    set y
} 300

# Test Tcl_Seek and Tcl_Tell.

test chan-io-34.1 {Tcl_Seek to current position at start of file} -body {
    set f1 [open $path(longfile) r]
    chan seek $f1 0 current
    chan tell $f1
} -cleanup {
    chan close $f1
} -result 0
test chan-io-34.2 {Tcl_Seek to offset from start} -setup {
    file delete $path(test1)
} -body {
    set f1 [open $path(test1) w]
    chan configure $f1 -translation lf -eofchar {}
    chan puts $f1 "abcdefghijklmnopqrstuvwxyz"
    chan puts $f1 "abcdefghijklmnopqrstuvwxyz"
    chan close $f1
    set f1 [open $path(test1) r]
    chan seek $f1 10 start
    chan tell $f1
} -cleanup {
    chan close $f1
} -result 10
test chan-io-34.3 {Tcl_Seek to end of file} -setup {
    file delete $path(test1)
} -body {
    set f1 [open $path(test1) w]
    chan configure $f1 -translation lf -eofchar {}
    chan puts $f1 "abcdefghijklmnopqrstuvwxyz"
    chan puts $f1 "abcdefghijklmnopqrstuvwxyz"
    chan close $f1
    set f1 [open $path(test1) r]
    chan seek $f1 0 end
    chan tell $f1
} -cleanup {
    chan close $f1
} -result 54
test chan-io-34.4 {Tcl_Seek to offset from end of file} -setup {
    file delete $path(test1)
} -body {
    set f1 [open $path(test1) w]
    chan configure $f1 -translation lf -eofchar {}
    chan puts $f1 "abcdefghijklmnopqrstuvwxyz"
    chan puts $f1 "abcdefghijklmnopqrstuvwxyz"
    chan close $f1
    set f1 [open $path(test1) r]
    chan seek $f1 -10 end
    chan tell $f1
} -cleanup {
    chan close $f1
} -result 44
test chan-io-34.5 {Tcl_Seek to offset from current position} -setup {
    file delete $path(test1)
} -body {
    set f1 [open $path(test1) w]
    chan configure $f1 -translation lf -eofchar {}
    chan puts $f1 "abcdefghijklmnopqrstuvwxyz"
    chan puts $f1 "abcdefghijklmnopqrstuvwxyz"
    chan close $f1
    set f1 [open $path(test1) r]
    chan seek $f1 10 current
    chan seek $f1 10 current
    chan tell $f1
} -cleanup {
    chan close $f1
} -result 20
test chan-io-34.6 {Tcl_Seek to offset from end of file} -setup {
    file delete $path(test1)
} -body {
    set f1 [open $path(test1) w]
    chan configure $f1 -translation lf -eofchar {}
    chan puts $f1 "abcdefghijklmnopqrstuvwxyz"
    chan puts $f1 "abcdefghijklmnopqrstuvwxyz"
    chan close $f1
    set f1 [open $path(test1) r]
    chan seek $f1 -10 end
    list [chan tell $f1] [chan read $f1]
} -cleanup {
    chan close $f1
} -result {44 {rstuvwxyz
}}
test chan-io-34.7 {Tcl_Seek to offset from end of file, then to current position} -setup {
    file delete $path(test1)
} -body {
    set f1 [open $path(test1) w]
    chan configure $f1 -translation lf -eofchar {}
    chan puts $f1 "abcdefghijklmnopqrstuvwxyz"
    chan puts $f1 "abcdefghijklmnopqrstuvwxyz"
    chan close $f1
    set f1 [open $path(test1) r]
    chan seek $f1 -10 end
    set c1 [chan tell $f1]
    set r1 [chan read $f1 5]
    chan seek $f1 0 current
    list $c1 $r1 [chan tell $f1]
} -cleanup {
    chan close $f1
} -result {44 rstuv 49}
test chan-io-34.8 {Tcl_Seek on pipes: not supported} -setup {
    set pipe [openpipe]
} -constraints {stdio openpipe} -body {
    chan seek $pipe 0 current
} -returnCodes error -cleanup {
    chan close $pipe
} -match glob -result {error during seek on "*": invalid argument}
test chan-io-34.9 {Tcl_Seek, testing buffered input flushing} -setup {
    file delete $path(test3)
} -body {
    set f [open $path(test3) w]
    chan configure $f -eofchar {}
    chan puts -nonewline $f "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
    chan close $f
    set f [open $path(test3) RDWR]
    set x [chan read $f 1]
    chan seek $f 3
    lappend x [chan read $f 1]
    chan seek $f 0 start
    lappend x [chan read $f 1]
    chan seek $f 10 current
    lappend x [chan read $f 1]
    chan seek $f -2 end
    lappend x [chan read $f 1]
    chan seek $f 50 end
    lappend x [chan read $f 1]
    chan seek $f 1
    lappend x [chan read $f 1]
} -cleanup {
    chan close $f
} -result {a d a l Y {} b}
set path(test3) [makeFile {} test3]
test chan-io-34.10 {Tcl_Seek testing flushing of buffered input} {
    set f [open $path(test3) w]
    chan configure $f -translation lf
    chan puts $f xyz\n123
    chan close $f
    set f [open $path(test3) r+]
    chan configure $f -translation lf
    set x [chan gets $f]
    chan seek $f 0 current
    chan puts $f 456
    chan close $f
    list $x [viewFile test3]
} "xyz {xyz
456}"
test chan-io-34.11 {Tcl_Seek testing flushing of buffered output} {
    set f [open $path(test3) w]
    chan puts $f xyz\n123
    chan close $f
    set f [open $path(test3) w+]
    chan puts $f xyzzy
    chan seek $f 2
    set x [chan gets $f]
    chan close $f
    list $x [viewFile test3]
} "zzy xyzzy"
test chan-io-34.12 {Tcl_Seek testing combination of write, seek back and read} {
    set f [open $path(test3) w]
    chan configure $f -translation lf -eofchar {}
    chan puts $f xyz\n123
    chan close $f
    set f [open $path(test3) a+]
    chan configure $f -translation lf -eofchar {}
    chan puts $f xyzzy
    chan flush $f
    set x [chan tell $f]
    chan seek $f -4 cur
    set y [chan gets $f]
    chan close $f
    list $x [viewFile test3] $y
} {14 {xyz
123
xyzzy} zzy}
test chan-io-34.13 {Tcl_Tell at start of file} -setup {
    file delete $path(test1)
} -body {
    set f1 [open $path(test1) w]
    chan tell $f1
} -cleanup {
    chan close $f1
} -result 0
test chan-io-34.14 {Tcl_Tell after seek to end of file} -setup {
    file delete $path(test1)
} -body {
    set f1 [open $path(test1) w]
    chan configure $f1 -translation lf -eofchar {}
    chan puts $f1 "abcdefghijklmnopqrstuvwxyz"
    chan puts $f1 "abcdefghijklmnopqrstuvwxyz"
    chan close $f1
    set f1 [open $path(test1) r]
    chan seek $f1 0 end
    chan tell $f1
} -cleanup {
    chan close $f1
} -result 54
test chan-io-34.15 {Tcl_Tell combined with seeking} -setup {
    file delete $path(test1)
} -body {
    set f1 [open $path(test1) w]
    chan configure $f1 -translation lf -eofchar {}
    chan puts $f1 "abcdefghijklmnopqrstuvwxyz"
    chan puts $f1 "abcdefghijklmnopqrstuvwxyz"
    chan close $f1
    set f1 [open $path(test1) r]
    chan seek $f1 10 start
    set c1 [chan tell $f1]
    chan seek $f1 10 current
    list $c1 [chan tell $f1]
} -cleanup {
    chan close $f1
} -result {10 20}
test chan-io-34.16 {Tcl_Tell on pipe: always -1} -constraints {stdio openpipe} -body {
    set f1 [openpipe]
    chan tell $f1
} -cleanup {
    chan close $f1
} -result -1
test chan-io-34.17 {Tcl_Tell on pipe: always -1} {stdio openpipe} {
    set f1 [openpipe]
    chan puts $f1 {chan puts hello}
    chan flush $f1
    set c [chan tell $f1]
    chan gets $f1
    chan close $f1
    set c
} -1
test chan-io-34.18 {Tcl_Tell combined with seeking and reading} -setup {
    file delete $path(test2)
} -body {
    set f [open $path(test2) w]
    chan configure $f -translation lf -eofchar {}
    chan puts -nonewline $f "line1\nline2\nline3\nline4\nline5\n"
    chan close $f
    set f [open $path(test2)]
    chan configure $f -translation lf
    set x [chan tell $f]
    chan read $f 3
    lappend x [chan tell $f]
    chan seek $f 2
    lappend x [chan tell $f]
    chan seek $f 10 current
    lappend x [chan tell $f]
    chan seek $f 0 end
    lappend x [chan tell $f]
} -cleanup {
    chan close $f
} -result {0 3 2 12 30}
test chan-io-34.19 {Tcl_Tell combined with opening in append mode} -body {
    set f [open $path(test3) w]
    chan configure $f -translation lf -eofchar {}
    chan puts $f "abcdefghijklmnopqrstuvwxyz"
    chan puts $f "abcdefghijklmnopqrstuvwxyz"
    chan close $f
    set f [open $path(test3) a]
    chan tell $f
} -cleanup {
    chan close $f
} -result 54
test chan-io-34.20 {Tcl_Tell combined with writing} -setup {
    set l ""
} -body {
    set f [open $path(test3) w]
    chan seek $f 29 start
    lappend l [chan tell $f]
    chan puts -nonewline $f a
    chan seek $f 39 start
    lappend l [chan tell $f]
    chan puts -nonewline $f a
    lappend l [chan tell $f]
    chan seek $f 407 end
    lappend l [chan tell $f]
} -cleanup {
    chan close $f
} -result {29 39 40 447}
test chan-io-34.21 {Tcl_Seek and Tcl_Tell on large files} -setup {
    file delete $path(test3)
    set l ""
} -constraints {largefileSupport} -body {
    set f [open $path(test3) w]
    chan configure $f -encoding binary
    lappend l [chan tell $f]
    chan puts -nonewline $f abcdef
    lappend l [chan tell $f]
    chan flush $f
    lappend l [chan tell $f]
    # 4GB offset!
    chan seek $f 0x100000000
    lappend l [chan tell $f]
    chan puts -nonewline $f abcdef
    lappend l [chan tell $f]
    chan close $f
    lappend l [file size $path(test3)]
    # truncate...
    chan close [open $path(test3) w]
    lappend l [file size $path(test3)]
} -result {0 6 6 4294967296 4294967302 4294967302 0}

# Test Tcl_Eof

test chan-io-35.1 {Tcl_Eof} -setup {
    file delete $path(test1)
} -body {
    set f [open $path(test1) w]
    chan puts $f hello
    chan puts $f hello
    chan close $f
    set f [open $path(test1)]
    set x [chan eof $f]
    lappend x [chan eof $f]
    chan gets $f
    lappend x [chan eof $f]
    chan gets $f
    lappend x [chan eof $f]
    chan gets $f
    lappend x [chan eof $f]
    lappend x [chan eof $f]
} -cleanup {
    chan close $f
} -result {0 0 0 0 1 1}
test chan-io-35.2 {Tcl_Eof with pipe} -constraints {stdio openpipe} -setup {
    file delete $path(pipe)
} -body {
    set f1 [open $path(pipe) w]
    chan puts $f1 {chan gets stdin}
    chan puts $f1 {chan puts hello}
    chan close $f1
    set f1 [openpipe r+ $path(pipe)]
    chan puts $f1 hello
    set x [chan eof $f1]
    chan flush $f1
    lappend x [chan eof $f1]
    chan gets $f1
    lappend x [chan eof $f1]
    chan gets $f1
    lappend x [chan eof $f1]
} -cleanup {
    chan close $f1
} -result {0 0 0 1}
test chan-io-35.3 {Tcl_Eof with pipe} -constraints {stdio openpipe} -setup {
    file delete $path(pipe)
} -body {
    set f1 [open $path(pipe) w]
    chan puts $f1 {chan gets stdin}
    chan puts $f1 {chan puts hello}
    chan close $f1
    set f1 [openpipe r+ $path(pipe)]
    chan puts $f1 hello
    set x [chan eof $f1]
    chan flush $f1
    lappend x [chan eof $f1]
    chan gets $f1
    lappend x [chan eof $f1]
    chan gets $f1
    lappend x [chan eof $f1]
    chan gets $f1
    lappend x [chan eof $f1]
    chan gets $f1
    lappend x [chan eof $f1]
} -cleanup {
    chan close $f1
} -result {0 0 0 1 1 1}
test chan-io-35.4 {Tcl_Eof, eof detection on nonblocking file} -setup {
    file delete $path(test1)
    set l ""
} -constraints {nonBlockFiles} -body {
    chan close [open $path(test1) w]
    set f [open $path(test1) r]
    chan configure $f -blocking off
    lappend l [chan gets $f]
    lappend l [chan eof $f]
} -cleanup {
    chan close $f
} -result {{} 1}
test chan-io-35.5 {Tcl_Eof, eof detection on nonblocking pipe} -setup {
    file delete $path(pipe)
    set l ""
} -constraints {stdio openpipe} -body {
    set f [open $path(pipe) w]
    chan puts $f {
	exit
    }
    chan close $f
    set f [openpipe r $path(pipe)]
    lappend l [chan gets $f]
    lappend l [chan eof $f]
} -cleanup {
    chan close $f
} -result {{} 1}
test chan-io-35.6 {Tcl_Eof, eof char, lf write, auto read} -setup {
    file delete $path(test1)
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf -eofchar \x1a
    chan puts $f abc\ndef
    chan close $f
    set s [file size $path(test1)]
    set f [open $path(test1) r]
    chan configure $f -translation auto -eofchar \x1a
    list $s [string length [chan read $f]] [chan eof $f]
} -cleanup {
    chan close $f
} -result {9 8 1}
test chan-io-35.7 {Tcl_Eof, eof char, lf write, lf read} -setup {
    file delete $path(test1)
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf -eofchar \x1a
    chan puts $f abc\ndef
    chan close $f
    set s [file size $path(test1)]
    set f [open $path(test1) r]
    chan configure $f -translation lf -eofchar \x1a
    list $s [string length [chan read $f]] [chan eof $f]
} -cleanup {
    chan close $f
} -result {9 8 1}
test chan-io-35.8 {Tcl_Eof, eof char, cr write, auto read} -setup {
    file delete $path(test1)
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation cr -eofchar \x1a
    chan puts $f abc\ndef
    chan close $f
    set s [file size $path(test1)]
    set f [open $path(test1) r]
    chan configure $f -translation auto -eofchar \x1a
    list $s [string length [chan read $f]] [chan eof $f]
} -cleanup {
    chan close $f
} -result {9 8 1}
test chan-io-35.9 {Tcl_Eof, eof char, cr write, cr read} -setup {
    file delete $path(test1)
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation cr -eofchar \x1a
    chan puts $f abc\ndef
    chan close $f
    set s [file size $path(test1)]
    set f [open $path(test1) r]
    chan configure $f -translation cr -eofchar \x1a
    list $s [string length [chan read $f]] [chan eof $f]
} -cleanup {
    chan close $f
} -result {9 8 1}
test chan-io-35.10 {Tcl_Eof, eof char, crlf write, auto read} -setup {
    file delete $path(test1)
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation crlf -eofchar \x1a
    chan puts $f abc\ndef
    chan close $f
    set s [file size $path(test1)]
    set f [open $path(test1) r]
    chan configure $f -translation auto -eofchar \x1a
    list $s [string length [chan read $f]] [chan eof $f]
} -cleanup {
    chan close $f
} -result {11 8 1}
test chan-io-35.11 {Tcl_Eof, eof char, crlf write, crlf read} -setup {
    file delete $path(test1)
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation crlf -eofchar \x1a
    chan puts $f abc\ndef
    chan close $f
    set s [file size $path(test1)]
    set f [open $path(test1) r]
    chan configure $f -translation crlf -eofchar \x1a
    list $s [string length [chan read $f]] [chan eof $f]
} -cleanup {
    chan close $f
} -result {11 8 1}
test chan-io-35.12 {Tcl_Eof, eof char in middle, lf write, auto read} -setup {
    file delete $path(test1)
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf -eofchar {}
    chan puts $f [format abc\ndef\n%cqrs\nuvw 26]
    chan close $f
    set c [file size $path(test1)]
    set f [open $path(test1) r]
    chan configure $f -translation auto -eofchar \x1a
    list $c [string length [chan read $f]] [chan eof $f]
} -cleanup {
    chan close $f
} -result {17 8 1}
test chan-io-35.13 {Tcl_Eof, eof char in middle, lf write, lf read} -setup {
    file delete $path(test1)
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf -eofchar {}
    chan puts $f [format abc\ndef\n%cqrs\nuvw 26]
    chan close $f
    set c [file size $path(test1)]
    set f [open $path(test1) r]
    chan configure $f -translation lf -eofchar \x1a
    list $c [string length [chan read $f]] [chan eof $f]
} -cleanup {
    chan close $f
} -result {17 8 1}
test chan-io-35.14 {Tcl_Eof, eof char in middle, cr write, auto read} -setup {
    file delete $path(test1)
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation cr -eofchar {}
    chan puts $f [format abc\ndef\n%cqrs\nuvw 26]
    chan close $f
    set c [file size $path(test1)]
    set f [open $path(test1) r]
    chan configure $f -translation auto -eofchar \x1a
    list $c [string length [chan read $f]] [chan eof $f]
} -cleanup {
    chan close $f
} -result {17 8 1}
test chan-io-35.15 {Tcl_Eof, eof char in middle, cr write, cr read} -setup {
    file delete $path(test1)
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation cr -eofchar {}
    chan puts $f [format abc\ndef\n%cqrs\nuvw 26]
    chan close $f
    set c [file size $path(test1)]
    set f [open $path(test1) r]
    chan configure $f -translation cr -eofchar \x1a
    list $c [string length [chan read $f]] [chan eof $f]
} -cleanup {
    chan close $f
} -result {17 8 1}
test chan-io-35.16 {Tcl_Eof, eof char in middle, crlf write, auto read} -setup {
    file delete $path(test1)
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation crlf -eofchar {}
    chan puts $f [format abc\ndef\n%cqrs\nuvw 26]
    chan close $f
    set c [file size $path(test1)]
    set f [open $path(test1) r]
    chan configure $f -translation auto -eofchar \x1a
    list $c [string length [chan read $f]] [chan eof $f]
} -cleanup {
    chan close $f
} -result {21 8 1}
test chan-io-35.17 {Tcl_Eof, eof char in middle, crlf write, crlf read} -setup {
    file delete $path(test1)
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation crlf -eofchar {}
    chan puts $f [format abc\ndef\n%cqrs\nuvw 26]
    chan close $f
    set c [file size $path(test1)]
    set f [open $path(test1) r]
    chan configure $f -translation crlf -eofchar \x1a
    list $c [string length [chan read $f]] [chan eof $f]
} -cleanup {
    chan close $f
} -result {21 8 1}

# Test Tcl_InputBlocked

test chan-io-36.1 {Tcl_InputBlocked on nonblocking pipe} -setup {
    set x ""
} -constraints {stdio openpipe} -body {
    set f1 [openpipe]
    chan puts $f1 {chan puts hello_from_pipe}
    chan flush $f1
    chan gets $f1
    chan configure $f1 -blocking off -buffering full
    chan puts $f1 {chan puts hello}
    lappend x [chan gets $f1]
    lappend x [chan blocked $f1]
    chan flush $f1
    after 200
    lappend x [chan gets $f1]
    lappend x [chan blocked $f1]
    lappend x [chan gets $f1]
    lappend x [chan blocked $f1]
} -cleanup {
    chan close $f1
} -result {{} 1 hello 0 {} 1}
test chan-io-36.2 {Tcl_InputBlocked on blocking pipe} -setup {
    set x ""
} -constraints {stdio openpipe} -body {
    set f1 [openpipe]
    chan configure $f1 -buffering line
    chan puts $f1 {chan puts hello_from_pipe}
    lappend x [chan gets $f1]
    lappend x [chan blocked $f1]
    chan puts $f1 {exit}
    lappend x [chan gets $f1]
    lappend x [chan blocked $f1]
    lappend x [chan eof $f1]
} -cleanup {
    chan close $f1
} -result {hello_from_pipe 0 {} 0 1}
test chan-io-36.3 {Tcl_InputBlocked vs files, short read} -setup {
    file delete $path(test1)
    set l ""
} -body {
    set f [open $path(test1) w]
    chan puts $f abcdefghijklmnop
    chan close $f
    set f [open $path(test1) r]
    lappend l [chan blocked $f]
    lappend l [chan read $f 3]
    lappend l [chan blocked $f]
    lappend l [chan read -nonewline $f]
    lappend l [chan blocked $f]
    lappend l [chan eof $f]
} -cleanup {
    chan close $f
} -result {0 abc 0 defghijklmnop 0 1}
test chan-io-36.4 {Tcl_InputBlocked vs files, event driven read} -setup {
    file delete $path(test1)
    set l ""
    variable x
} -constraints {fileevent} -body {
    set f [open $path(test1) w]
    chan puts $f abcdefghijklmnop
    chan close $f
    set f [open $path(test1) r]
    chan event $f readable [namespace code {
	lappend l [chan read $f 3]
	if {[chan eof $f]} {lappend l eof; chan close $f; set x done}
    }]
    vwait [namespace which -variable x]
    return $l
} -result {abc def ghi jkl mno {p
} eof}
test chan-io-36.5 {Tcl_InputBlocked vs files, short read, nonblocking} -setup {
    file delete $path(test1)
    set l ""
} -constraints {nonBlockFiles} -body {
    set f [open $path(test1) w]
    chan puts $f abcdefghijklmnop
    chan close $f
    set f [open $path(test1) r]
    chan configure $f -blocking off
    lappend l [chan blocked $f]
    lappend l [chan read $f 3]
    lappend l [chan blocked $f]
    lappend l [chan read -nonewline $f]
    lappend l [chan blocked $f]
    lappend l [chan eof $f]
} -cleanup {
    chan close $f
} -result {0 abc 0 defghijklmnop 0 1}
test chan-io-36.6 {Tcl_InputBlocked vs files, event driven read} -setup {
    file delete $path(test1)
    set l ""
    variable x
} -constraints {nonBlockFiles fileevent} -body {
    set f [open $path(test1) w]
    chan puts $f abcdefghijklmnop
    chan close $f
    set f [open $path(test1) r]
    chan configure $f -blocking off
    chan event $f readable [namespace code {
	lappend l [chan read $f 3]
	if {[chan eof $f]} {lappend l eof; chan close $f; set x done}
    }]
    vwait [namespace which -variable x]
    return $l
} -result {abc def ghi jkl mno {p
} eof}

# Test Tcl_InputBuffered

test chan-io-37.1 {Tcl_InputBuffered} -setup {
    set l ""
} -constraints {testchannel} -body {
    set f [open $path(longfile) r]
    chan configure $f -buffersize 4096
    chan read $f 3
    lappend l [testchannel inputbuffered $f]
    lappend l [chan tell $f]
} -cleanup {
    chan close $f
} -result {4093 3}
test chan-io-37.2 {Tcl_InputBuffered, test input flushing on seek} -setup {
    set l ""
} -constraints {testchannel} -body {
    set f [open $path(longfile) r]
    chan configure $f -buffersize 4096
    chan read $f 3
    lappend l [testchannel inputbuffered $f]
    lappend l [chan tell $f]
    chan seek $f 0 current
    lappend l [testchannel inputbuffered $f]
    lappend l [chan tell $f]
} -cleanup {
    chan close $f
} -result {4093 3 0 3}

# Test Tcl_SetChannelBufferSize, Tcl_GetChannelBufferSize

test chan-io-38.1 {Tcl_GetChannelBufferSize, default buffer size} -body {
    set f [open $path(longfile) r]
    chan configure $f -buffersize
} -cleanup {
    chan close $f
} -result 4096
test chan-io-38.2 {Tcl_SetChannelBufferSize, Tcl_GetChannelBufferSize} -setup {
    set l ""
} -body {
    set f [open $path(longfile) r]
    lappend l [chan configure $f -buffersize]
    chan configure $f -buffersize 10000
    lappend l [chan configure $f -buffersize]
    chan configure $f -buffersize 1
    lappend l [chan configure $f -buffersize]
    chan configure $f -buffersize -1
    lappend l [chan configure $f -buffersize]
    chan configure $f -buffersize 0
    lappend l [chan configure $f -buffersize]
    chan configure $f -buffersize 100000
    lappend l [chan configure $f -buffersize]
    chan configure $f -buffersize 10000000
    lappend l [chan configure $f -buffersize]
} -cleanup {
    chan close $f
} -result {4096 10000 1 1 1 100000 1048576}
test chan-io-38.3 {Tcl_SetChannelBufferSize, changing buffersize between reads} {
    # This test crashes the interp if Bug #427196 is not fixed
    set chan [open [info script] r]
    chan configure $chan -buffersize 10
    set var [chan read $chan 2]
    chan configure $chan -buffersize 32
    append var [chan read $chan]
    chan close $chan
} {}

# Test Tcl_SetChannelOption, Tcl_GetChannelOption

test chan-io-39.1 {Tcl_GetChannelOption} -setup {
    file delete $path(test1)
} -body {
    set f1 [open $path(test1) w]
    chan configure $f1 -blocking
} -cleanup {
    chan close $f1
} -result 1
#
# Test 17.2 was removed.
#
test chan-io-39.2 {Tcl_GetChannelOption} -setup {
    file delete $path(test1)
} -body {
    set f1 [open $path(test1) w]
    chan configure $f1 -buffering
} -cleanup {
    chan close $f1
} -result full
test chan-io-39.3 {Tcl_GetChannelOption} -setup {
    file delete $path(test1)
} -body {
    set f1 [open $path(test1) w]
    chan configure $f1 -buffering line
    chan configure $f1 -buffering
} -cleanup {
    chan close $f1
} -result line
test chan-io-39.4 {Tcl_GetChannelOption, Tcl_SetChannelOption} -setup {
    file delete $path(test1)
    set l ""
} -body {
    set f1 [open $path(test1) w]
    lappend l [chan configure $f1 -buffering]
    chan configure $f1 -buffering line
    lappend l [chan configure $f1 -buffering]
    chan configure $f1 -buffering none
    lappend l [chan configure $f1 -buffering]
    chan configure $f1 -buffering line
    lappend l [chan configure $f1 -buffering]
    chan configure $f1 -buffering full
    lappend l [chan configure $f1 -buffering]
} -cleanup {
    chan close $f1
} -result {full line none line full}
test chan-io-39.5 {Tcl_GetChannelOption, invariance} -setup {
    file delete $path(test1)
    set l ""
} -body {
    set f1 [open $path(test1) w]
    lappend l [chan configure $f1 -buffering]
    lappend l [list [catch {chan configure $f1 -buffering green} msg] $msg]
    lappend l [chan configure $f1 -buffering]
} -cleanup {
    chan close $f1
} -result {full {1 {bad value for -buffering: must be one of full, line, or none}} full}
test chan-io-39.6 {Tcl_SetChannelOption, multiple options} -setup {
    file delete $path(test1)
} -body {
    set f1 [open $path(test1) w]
    chan configure $f1 -translation lf -buffering line
    chan puts $f1 hello
    chan puts $f1 bye
    file size $path(test1)
} -cleanup {
    chan close $f1
} -result 10
test chan-io-39.7 {Tcl_SetChannelOption, buffering, translation} -setup {
    file delete $path(test1)
    set x ""
} -body {
    set f1 [open $path(test1) w]
    chan configure $f1 -translation lf
    chan puts $f1 hello
    chan puts $f1 bye
    chan configure $f1 -buffering line
    lappend x [file size $path(test1)]
    chan puts $f1 really_bye
    lappend x [file size $path(test1)]
} -cleanup {
    chan close $f1
} -result {0 21}
test chan-io-39.8 {Tcl_SetChannelOption, different buffering options} -setup {
    file delete $path(test1)
    set l ""
} -body {
    set f1 [open $path(test1) w]
    chan configure $f1 -translation lf -buffering none -eofchar {}
    chan puts -nonewline $f1 hello
    lappend l [file size $path(test1)]
    chan puts -nonewline $f1 hello
    lappend l [file size $path(test1)]
    chan configure $f1 -buffering full
    chan puts -nonewline $f1 hello
    lappend l [file size $path(test1)]
    chan configure $f1 -buffering none
    lappend l [file size $path(test1)]
    chan puts -nonewline $f1 hello
    lappend l [file size $path(test1)]
    chan close $f1
    lappend l [file size $path(test1)]
} -result {5 10 10 10 20 20}
test chan-io-39.9 {Tcl_SetChannelOption, blocking mode} -setup {
    file delete $path(test1)
    set x ""
} -constraints {nonBlockFiles} -body {
    set f1 [open $path(test1) w]
    chan close $f1
    set f1 [open $path(test1) r]
    lappend x [chan configure $f1 -blocking]
    chan configure $f1 -blocking off
    lappend x [chan configure $f1 -blocking]
    lappend x [chan gets $f1]
    lappend x [chan read $f1 1000]
    lappend x [chan blocked $f1]
    lappend x [chan eof $f1]
} -cleanup {
    chan close $f1
} -result {1 0 {} {} 0 1}
test chan-io-39.10 {Tcl_SetChannelOption, blocking mode} -setup {
    file delete $path(pipe)
    set x ""
} -constraints {stdio openpipe} -body {
    set f1 [open $path(pipe) w]
    chan puts $f1 {
	chan gets stdin
	after 100
	chan puts hi
	chan gets stdin
    }
    chan close $f1
    set f1 [openpipe r+ $path(pipe)]
    chan configure $f1 -blocking off -buffering line
    lappend x [chan configure $f1 -blocking]
    lappend x [chan gets $f1]
    lappend x [chan blocked $f1]
    chan configure $f1 -blocking on
    chan puts $f1 hello
    chan configure $f1 -blocking off
    lappend x [chan gets $f1]
    lappend x [chan blocked $f1]
    chan configure $f1 -blocking on
    chan puts $f1 bye
    chan configure $f1 -blocking off
    lappend x [chan gets $f1]
    lappend x [chan blocked $f1]
    chan configure $f1 -blocking on
    lappend x [chan configure $f1 -blocking]
    lappend x [chan gets $f1]
    lappend x [chan blocked $f1]
    lappend x [chan eof $f1]
    lappend x [chan gets $f1]
    lappend x [chan eof $f1]
} -cleanup {
    chan close $f1
} -result {0 {} 1 {} 1 {} 1 1 hi 0 0 {} 1}
test chan-io-39.11 {Tcl_SetChannelOption, Tcl_GetChannelOption, buffer size clipped to lower bound} -setup {
    file delete $path(test1)
} -body {
    set f [open $path(test1) w]
    chan configure $f -buffersize -10
    chan configure $f -buffersize
} -cleanup {
    chan close $f
} -result 1
test chan-io-39.12 {Tcl_SetChannelOption, Tcl_GetChannelOption buffer size clipped to upper bound} -setup {
    file delete $path(test1)
} -body {
    set f [open $path(test1) w]
    chan configure $f -buffersize 10000000
    chan configure $f -buffersize
} -cleanup {
    chan close $f
} -result 1048576
test chan-io-39.13 {Tcl_SetChannelOption, Tcl_GetChannelOption, buffer size} -setup {
    file delete $path(test1)
} -body {
    set f [open $path(test1) w]
    chan configure $f -buffersize 40000
    chan configure $f -buffersize
} -cleanup {
    chan close $f
} -result 40000
test chan-io-39.14 {Tcl_SetChannelOption: -encoding, binary & utf-8} -setup {
    file delete $path(test1)
} -body {
    set f [open $path(test1) w]
    chan configure $f -encoding {} 
    chan puts -nonewline $f \xe7\x89\xa6
    chan close $f
    set f [open $path(test1) r]
    chan configure $f -encoding utf-8
    chan read $f
} -cleanup {
    chan close $f
} -result \u7266
test chan-io-39.15 {Tcl_SetChannelOption: -encoding, binary & utf-8} -setup {
    file delete $path(test1)
} -body {
    set f [open $path(test1) w]
    chan configure $f -encoding binary
    chan puts -nonewline $f \xe7\x89\xa6
    chan close $f
    set f [open $path(test1) r]
    chan configure $f -encoding utf-8
    chan read $f
} -cleanup {
    chan close $f
} -result \u7266
test chan-io-39.16 {Tcl_SetChannelOption: -encoding, errors} -setup {
    file delete $path(test1)
    set f [open $path(test1) w]
} -body {
    chan configure $f -encoding foobar
} -returnCodes error -cleanup {
    chan close $f
} -result {unknown encoding "foobar"}
test chan-io-39.17 {Tcl_SetChannelOption: -encoding, clearing CHANNEL_NEED_MORE_DATA} -setup {
    variable x {}
} -constraints {stdio openpipe fileevent} -body {
    set f [openpipe r+ $path(cat)]
    chan configure $f -encoding binary
    chan puts -nonewline $f "\xe7"
    chan flush $f
    chan configure $f -encoding utf-8 -blocking 0
    chan event $f readable [namespace code { lappend x [chan read $f] }]
    vwait [namespace which -variable x]
    after 300 [namespace code { lappend x timeout }]
    vwait [namespace which -variable x]
    chan configure $f -encoding utf-8
    vwait [namespace which -variable x]
    after 300 [namespace code { lappend x timeout }]
    vwait [namespace which -variable x]
    chan configure $f -encoding binary
    vwait [namespace which -variable x]
    after 300 [namespace code { lappend x timeout }]
    vwait [namespace which -variable x]
    return $x
} -cleanup {
    chan close $f
} -result "{} timeout {} timeout \xe7 timeout"
test chan-io-39.18 {Tcl_SetChannelOption, setting read mode independently} \
	-constraints {socket} -body {
    proc accept {s a p} {chan close $s}
    set s1 [socket -server [namespace code accept] -myaddr 127.0.0.1 0]
    set port [lindex [chan configure $s1 -sockname] 2]
    set s2 [socket 127.0.0.1 $port]
    update
    chan configure $s2 -translation {auto lf}
    chan configure $s2 -translation
} -cleanup {
    chan close $s1
    chan close $s2
} -result {auto lf}
test chan-io-39.19 {Tcl_SetChannelOption, setting read mode independently} \
	-constraints {socket} -body {
    proc accept {s a p} {chan close $s}
    set s1 [socket -server [namespace code accept] -myaddr 127.0.0.1 0]
    set port [lindex [chan configure $s1 -sockname] 2]
    set s2 [socket 127.0.0.1 $port]
    update
    chan configure $s2 -translation {auto crlf}
    chan configure $s2 -translation
} -cleanup {
    chan close $s1
    chan close $s2
} -result {auto crlf}
test chan-io-39.20 {Tcl_SetChannelOption, setting read mode independently} \
	-constraints {socket} -body {
    proc accept {s a p} {chan close $s}
    set s1 [socket -server [namespace code accept] -myaddr 127.0.0.1 0]
    set port [lindex [chan configure $s1 -sockname] 2]
    set s2 [socket 127.0.0.1 $port]
    update
    chan configure $s2 -translation {auto cr}
    chan configure $s2 -translation
} -cleanup {
    chan close $s1
    chan close $s2
} -result {auto cr}
test chan-io-39.21 {Tcl_SetChannelOption, setting read mode independently} \
	-constraints {socket} -body {
    proc accept {s a p} {chan close $s}
    set s1 [socket -server [namespace code accept] -myaddr 127.0.0.1 0]
    set port [lindex [chan configure $s1 -sockname] 2]
    set s2 [socket 127.0.0.1 $port]
    update
    chan configure $s2 -translation {auto auto}
    chan configure $s2 -translation
} -cleanup {
    chan close $s1
    chan close $s2
} -result {auto crlf}
test chan-io-39.22 {Tcl_SetChannelOption, invariance} -setup {
    file delete $path(test1)
    set l ""
} -constraints {unix} -body {
    set f1 [open $path(test1) w+]
    lappend l [chan configure $f1 -eofchar]
    chan configure $f1 -eofchar {ON GO}
    lappend l [chan configure $f1 -eofchar]
    chan configure $f1 -eofchar D
    lappend l [chan configure $f1 -eofchar]
} -cleanup {
    chan close $f1
} -result {{{} {}} {O G} {D D}}
test chan-io-39.22a {Tcl_SetChannelOption, invariance} -setup {
    file delete $path(test1)
    set l [list]
} -body {
    set f1 [open $path(test1) w+]
    chan configure $f1 -eofchar {ON GO}
    lappend l [chan configure $f1 -eofchar]
    chan configure $f1 -eofchar D
    lappend l [chan configure $f1 -eofchar]
    lappend l [list [catch {chan configure $f1 -eofchar {1 2 3}} msg] $msg]
} -cleanup {
    chan close $f1
} -result {{O G} {D D} {1 {bad value for -eofchar: should be a list of zero, one, or two elements}}}
test chan-io-39.23 {Tcl_GetChannelOption, server socket is not readable or\
        writeable, it should still have valid -eofchar and -translation options} -setup {
    set l [list]
} -body {
    set sock [socket -server [namespace code accept] -myaddr 127.0.0.1 0]
    lappend l [chan configure $sock -eofchar] \
	[chan configure $sock -translation]
} -cleanup {
    chan close $sock
} -result {{{}} auto}
test chan-io-39.24 {Tcl_SetChannelOption, server socket is not readable or\
        writable so we can't change -eofchar or -translation} -setup {
    set l [list]
} -body { 
    set sock [socket -server [namespace code accept] -myaddr 127.0.0.1 0]
    chan configure $sock -eofchar D -translation lf
    lappend l [chan configure $sock -eofchar] \
	[chan configure $sock -translation]
} -cleanup {
    chan close $sock
} -result {{{}} auto}

test chan-io-40.1 {POSIX open access modes: RDWR} -setup {
    file delete $path(test3)
} -body {
    set f [open $path(test3) w]
    chan puts $f xyzzy
    chan close $f
    set f [open $path(test3) RDWR]
    chan puts -nonewline $f "ab"
    chan seek $f 0 current
    set x [chan gets $f]
    chan close $f
    set f [open $path(test3) r]
    lappend x [chan gets $f]
} -cleanup {
    chan close $f
} -result {zzy abzzy}
test chan-io-40.2 {POSIX open access modes: CREAT} -setup {
    file delete $path(test3)
} -constraints {unix} -body {
    set f [open $path(test3) {WRONLY CREAT} 0600]
    file stat $path(test3) stats
    set x [format "0%o" [expr $stats(mode)&0o777]]
    chan puts $f "line 1"
    chan close $f
    set f [open $path(test3) r]
    lappend x [chan gets $f]
} -cleanup {
    chan close $f
} -result {0600 {line 1}}
test chan-io-40.3 {POSIX open access modes: CREAT} -setup {
    file delete $path(test3)
} -constraints {unix umask} -body {
    # This test only works if your umask is 2, like ouster's.
    chan close [open $path(test3) {WRONLY CREAT}]
    file stat $path(test3) stats
    format "0%o" [expr $stats(mode)&0o777]
} -result [format %04o [expr {0o666 & ~ $umaskValue}]]
test chan-io-40.4 {POSIX open access modes: CREAT} -setup {
    file delete $path(test3)
} -body {
    set f [open $path(test3) w]
    chan configure $f -eofchar {}
    chan puts $f xyzzy
    chan close $f
    set f [open $path(test3) {WRONLY CREAT}]
    chan configure $f -eofchar {}
    chan puts -nonewline $f "ab"
    chan close $f
    set f [open $path(test3) r]
    chan gets $f
} -cleanup {
    chan close $f
} -result abzzy
test chan-io-40.5 {POSIX open access modes: APPEND} -setup {
    file delete $path(test3)
    set x ""
} -body {
    set f [open $path(test3) w]
    chan configure $f -translation lf -eofchar {}
    chan puts $f xyzzy
    chan close $f
    set f [open $path(test3) {WRONLY APPEND}]
    chan configure $f -translation lf
    chan puts $f "new line"
    chan seek $f 0
    chan puts $f "abc"
    chan close $f
    set f [open $path(test3) r]
    chan configure $f -translation lf
    chan seek $f 6 current
    lappend x [chan gets $f]
    lappend x [chan gets $f]
} -cleanup {
    chan close $f
} -result {{new line} abc}
test chan-io-40.6 {POSIX open access modes: EXCL} -match regexp -setup {
    file delete $path(test3)
} -body {
    set f [open $path(test3) w]
    chan puts $f xyzzy
    chan close $f
    open $path(test3) {WRONLY CREAT EXCL}
} -returnCodes error -result {(?i)couldn't open ".*test3": file (already )?exists}
test chan-io-40.7 {POSIX open access modes: EXCL} -setup {
    file delete $path(test3)
} -body {
    set f [open $path(test3) {WRONLY CREAT EXCL}]
    chan configure $f -eofchar {}
    chan puts $f "A test line"
    chan close $f
    viewFile test3
} -result {A test line}
test chan-io-40.8 {POSIX open access modes: TRUNC} -setup {
    file delete $path(test3)
} -body {
    set f [open $path(test3) w]
    chan puts $f xyzzy
    chan close $f
    set f [open $path(test3) {WRONLY TRUNC}]
    chan puts $f abc
    chan close $f
    set f [open $path(test3) r]
    chan gets $f
} -cleanup {
    chan close $f
} -result abc
test chan-io-40.9 {POSIX open access modes: NONBLOCK} -setup {
    file delete $path(test3)
} -constraints {nonPortable unix} -body {
    set f [open $path(test3) {WRONLY NONBLOCK CREAT}]
    chan puts $f "NONBLOCK test"
    chan close $f
    set f [open $path(test3) r]
    chan gets $f
} -cleanup {
    chan close $f
} -result {NONBLOCK test}
test chan-io-40.10 {POSIX open access modes: RDONLY} -body {
    set f [open $path(test1) w]
    chan puts $f "two lines: this one"
    chan puts $f "and this"
    chan close $f
    set f [open $path(test1) RDONLY]
    list [chan gets $f] [catch {chan puts $f Test} msg] $msg
} -cleanup {
    chan close $f
} -match glob -result {{two lines: this one} 1 {channel "*" wasn't opened for writing}}
test chan-io-40.11 {POSIX open access modes: RDONLY} -match regexp -body {
    file delete $path(test3)
    open $path(test3) RDONLY
} -returnCodes error -result {(?i)couldn't open ".*test3": no such file or directory}
test chan-io-40.12 {POSIX open access modes: WRONLY} -match regexp -body {
    file delete $path(test3)
    open $path(test3) WRONLY
} -returnCodes error -result {(?i)couldn't open ".*test3": no such file or directory}
test chan-io-40.13 {POSIX open access modes: WRONLY} -body {
    makeFile xyzzy test3
    set f [open $path(test3) WRONLY]
    chan configure $f -eofchar {}
    chan puts -nonewline $f "ab"
    chan seek $f 0 current
    set x [list [catch {chan gets $f} msg] $msg]
    chan close $f
    lappend x [viewFile test3]
} -match glob -result {1 {channel "*" wasn't opened for reading} abzzy} 
test chan-io-40.14 {POSIX open access modes: RDWR} -match regexp -body {
    file delete $path(test3)
    open $path(test3) RDWR
} -returnCodes error -result {(?i)couldn't open ".*test3": no such file or directory}
test chan-io-40.15 {POSIX open access modes: RDWR} {
    makeFile xyzzy test3
    set f [open $path(test3) RDWR]
    chan puts -nonewline $f "ab"
    chan seek $f 0 current
    set x [chan gets $f]
    chan close $f
    lappend x [viewFile test3]
} {zzy abzzy}
test chan-io-40.16 {tilde substitution in open} -constraints makeFileInHome -setup {
    makeFile {Some text} _test_ ~
} -body {
    file exists [file join $::env(HOME) _test_]
} -cleanup {
    removeFile _test_ ~
} -result 1
test chan-io-40.17 {tilde substitution in open} -setup {
    set home $::env(HOME)
} -body {
    unset ::env(HOME)
    open ~/foo
} -returnCodes error -cleanup {
    set ::env(HOME) $home
} -result {couldn't find HOME environment variable to expand path}

test chan-io-41.1 {Tcl_FileeventCmd: errors} -constraints fileevent -body {
    chan event foo
} -returnCodes error -result {wrong # args: should be "chan event channelId event ?script?"}
test chan-io-41.2 {Tcl_FileeventCmd: errors} -constraints fileevent -body {
    chan event foo bar baz q
} -returnCodes error -result {wrong # args: should be "chan event channelId event ?script?"}
test chan-io-41.3 {Tcl_FileeventCmd: errors} -constraints fileevent -body {
    chan event gorp readable
} -returnCodes error -result {can not find channel named "gorp"}
test chan-io-41.4 {Tcl_FileeventCmd: errors} -constraints fileevent -body {
    chan event gorp writable
} -returnCodes error -result {can not find channel named "gorp"}
test chan-io-41.5 {Tcl_FileeventCmd: errors} -constraints fileevent -body {
    chan event gorp who-knows
} -returnCodes error -result {bad event name "who-knows": must be readable or writable}

#
# Test chan event on a file
#

set path(foo) [makeFile {} foo]
set f [open $path(foo) w+]

test chan-io-42.1 {Tcl_FileeventCmd: creating, deleting, querying} {fileevent} {
    list [chan event $f readable] [chan event $f writable]
} {{} {}}
test chan-io-42.2 {Tcl_FileeventCmd: replacing} {fileevent} {
    set result {}
    chan event $f r "first script"
    lappend result [chan event $f readable]
    chan event $f r "new script"
    lappend result [chan event $f readable]
    chan event $f r "yet another"
    lappend result [chan event $f readable]
    chan event $f r ""
    lappend result [chan event $f readable]
} {{first script} {new script} {yet another} {}}
test chan-io-42.3 {Tcl_FileeventCmd: replacing, with NULL chars in script} {fileevent} {
    set result {}
    chan event $f r "first scr\0ipt"
    lappend result [string length [chan event $f readable]]
    chan event $f r "new scr\0ipt"
    lappend result [string length [chan event $f readable]]
    chan event $f r "yet ano\0ther"
    lappend result [string length [chan event $f readable]]
    chan event $f r ""
    lappend result [chan event $f readable]
} {13 11 12 {}}

test chan-io-43.1 {Tcl_FileeventCmd: creating, deleting, querying} {stdio unixExecs fileevent} {
    set result {}
    chan event $f readable "script 1"
    lappend result [chan event $f readable] [chan event $f writable]
    chan event $f writable "write script"
    lappend result [chan event $f readable] [chan event $f writable]
    chan event $f readable {}
    lappend result [chan event $f readable] [chan event $f writable]
    chan event $f writable {}
    lappend result [chan event $f readable] [chan event $f writable]
} {{script 1} {} {script 1} {write script} {} {write script} {} {}}
test chan-io-43.2 {Tcl_FileeventCmd: deleting when many present} -setup {
    set f2 [open "|[list cat -u]" r+]
    set f3 [open "|[list cat -u]" r+]
    set result {}
} -constraints {stdio unixExecs fileevent openpipe} -body {
    lappend result [chan event $f r] [chan event $f2 r] [chan event $f3 r]
    chan event $f r "chan read f"
    chan event $f2 r "chan read f2"
    chan event $f3 r "chan read f3"
    lappend result [chan event $f r] [chan event $f2 r] [chan event $f3 r]
    chan event $f2 r {}
    lappend result [chan event $f r] [chan event $f2 r] [chan event $f3 r]
    chan event $f3 r {}
    lappend result [chan event $f r] [chan event $f2 r] [chan event $f3 r]
    chan event $f r {}
    lappend result [chan event $f r] [chan event $f2 r] [chan event $f3 r]
} -cleanup {
    catch {chan close $f2}
    catch {chan close $f3}
} -result {{} {} {} {chan read f} {chan read f2} {chan read f3} {chan read f} {} {chan read f3} {chan read f} {} {} {} {} {}}

test chan-io-44.1 {FileEventProc procedure: normal read event} -setup {
    set f2 [open "|[list cat -u]" r+]
    set f3 [open "|[list cat -u]" r+]
} -constraints {stdio unixExecs fileevent openpipe} -body {
    chan event $f2 readable [namespace code {
	set x [chan gets $f2]; chan event $f2 readable {}
    }]
    chan puts $f2 text; chan flush $f2
    variable x initial
    vwait [namespace which -variable x]
    return $x
} -cleanup {
    catch {chan close $f2}
    catch {chan close $f3}
} -result {text}
test chan-io-44.2 {FileEventProc procedure: error in read event} -setup {
    set f2 [open "|[list cat -u]" r+]
    set f3 [open "|[list cat -u]" r+]
    proc myHandler {msg options} {
	variable x $msg
    }
    set handler [interp bgerror {}]
    interp bgerror {} [namespace which myHandler]
} -constraints {stdio unixExecs fileevent openpipe} -body {
    chan event $f2 readable {error bogus}
    chan puts $f2 text; chan flush $f2
    variable x initial
    vwait [namespace which -variable x]
    list $x [chan event $f2 readable]
} -cleanup {
    interp bgerror {} $handler
    catch {chan close $f2}
    catch {chan close $f3}
} -result {bogus {}}
test chan-io-44.3 {FileEventProc procedure: normal write event} -setup {
    set f2 [open "|[list cat -u]" r+]
    set f3 [open "|[list cat -u]" r+]
} -constraints {stdio unixExecs fileevent openpipe} -body {
    chan event $f2 writable [namespace code {
	lappend x "triggered"
	incr count -1
	if {$count <= 0} {
	    chan event $f2 writable {}
	}
    }]
    variable x initial
    set count 3
    vwait [namespace which -variable x]
    vwait [namespace which -variable x]
    vwait [namespace which -variable x]
    return $x
} -cleanup {
    catch {chan close $f2}
    catch {chan close $f3}
} -result {initial triggered triggered triggered}
test chan-io-44.4 {FileEventProc procedure: eror in write event} -setup {
    set f2 [open "|[list cat -u]" r+]
    set f3 [open "|[list cat -u]" r+]
    proc myHandler {msg options} {
	variable x $msg
    }
    set handler [interp bgerror {}]
    interp bgerror {} [namespace which myHandler]
} -constraints {stdio unixExecs fileevent openpipe} -body {
    chan event $f2 writable {error bad-write}
    variable x initial
    vwait [namespace which -variable x]
    list $x [chan event $f2 writable]
} -cleanup {
    interp bgerror {} $handler
    catch {chan close $f2}
    catch {chan close $f3}
} -result {bad-write {}}
test chan-io-44.5 {FileEventProc procedure: end of file} {stdio unixExecs openpipe fileevent} {
    set f4 [openpipe r $path(cat) << foo]
    chan event $f4 readable [namespace code {
	if {[chan gets $f4 line] < 0} {
	    lappend x eof
	    chan event $f4 readable {}
	} else {
	    lappend x $line
	}
    }]
    variable x initial
    vwait [namespace which -variable x]
    vwait [namespace which -variable x]
    chan close $f4
    set x
} {initial foo eof}

chan close $f
makeFile "foo bar" foo

test chan-io-45.1 {DeleteFileEvent, cleanup on chan close} {fileevent} {
    set f [open $path(foo) r]
    chan event $f readable [namespace code {
	lappend x "binding triggered: \"[chan gets $f]\""
	chan event $f readable {}
    }]
    chan close $f
    set x initial
    after 100 [namespace code {
	set y done
    }]
    variable y
    vwait [namespace which -variable y]
    set x
} {initial}
test chan-io-45.2 {DeleteFileEvent, cleanup on chan close} {fileevent} {
    set f  [open $path(foo) r]
    set f2 [open $path(foo) r]
    chan event $f readable [namespace code {
	lappend x "f triggered: \"[chan gets $f]\""
	chan event $f readable {}
    }]
    chan event $f2 readable [namespace code {
	lappend x "f2 triggered: \"[chan gets $f2]\""
	chan event $f2 readable {}
    }]
    chan close $f
    variable x initial
    vwait [namespace which -variable x]
    chan close $f2
    set x
} {initial {f2 triggered: "foo bar"}}
test chan-io-45.3 {DeleteFileEvent, cleanup on chan close} {fileevent} {
    set f  [open $path(foo) r]
    set f2 [open $path(foo) r]
    set f3 [open $path(foo) r]
    chan event $f readable {f script}
    chan event $f2 readable {f2 script}
    chan event $f3 readable {f3 script}
    set x {}
    chan close $f2
    lappend x [catch {chan event $f readable} msg] $msg \
	    [catch {chan event $f2 readable}] \
	    [catch {chan event $f3 readable} msg] $msg
    chan close $f3
    lappend x [catch {chan event $f readable} msg] $msg \
	    [catch {chan event $f2 readable}] \
	    [catch {chan event $f3 readable}]
    chan close $f
    lappend x [catch {chan event $f readable}] \
	    [catch {chan event $f2 readable}] \
	    [catch {chan event $f3 readable}]
} {0 {f script} 1 0 {f3 script} 0 {f script} 1 1 1 1 1}

# Execute these tests only if the "testfevent" command is present.

test chan-io-46.1 {Tcl event loop vs multiple interpreters} {testfevent fileevent} {
    testfevent create
    set script "set f \[[list open $path(foo) r]]\n"
    append script {
	set x "no event"
	chan event $f readable [namespace code {
	    set x "f triggered: [chan gets $f]"
	    chan event $f readable {}
	}]
    }
    testfevent cmd $script
    after 1	;# We must delay because Windows takes a little time to notice
    update
    testfevent cmd {chan close $f}
    list [testfevent cmd {set x}] [testfevent cmd {info commands after}]
} {{f triggered: foo bar} after}
test chan-io-46.2 {Tcl event loop vs multiple interpreters} testfevent {
    testfevent create
    testfevent cmd {
        variable x 0
        after 100 {set x triggered}
        vwait [namespace which -variable x]
        set x
    }
} {triggered}
test chan-io-46.3 {Tcl event loop vs multiple interpreters} testfevent {
    testfevent create
    testfevent cmd {
        set x 0
        after 10 {lappend x timer}
        after 30
        set result $x
        update idletasks
        lappend result $x
        update
        lappend result $x
    }
} {0 0 {0 timer}}

test chan-io-47.1 {chan event vs multiple interpreters} -setup {
    set f  [open $path(foo) r]
    set f2 [open $path(foo) r]
    set f3 [open $path(foo) r]
    set x {}
} -constraints {testfevent fileevent} -body {
    chan event $f readable {script 1}
    testfevent create
    testfevent share $f2
    testfevent cmd "chan event $f2 readable {script 2}"
    chan event $f3 readable {sript 3}
    lappend x [chan event $f2 readable]
    testfevent delete
    lappend x [chan event $f readable] [chan event $f2 readable] \
        [chan event $f3 readable]
} -cleanup {
    chan close $f
    chan close $f2
    chan close $f3
} -result {{} {script 1} {} {sript 3}}
test chan-io-47.2 {deleting chan event on interpreter delete} -setup {
    set f  [open $path(foo) r]
    set f2 [open $path(foo) r]
    set f3 [open $path(foo) r]
    set f4 [open $path(foo) r]
} -constraints {testfevent fileevent} -body {
    chan event $f readable {script 1}
    testfevent create
    testfevent share $f2
    testfevent share $f3
    testfevent cmd "chan event $f2 readable {script 2}
        chan event $f3 readable {script 3}"
    chan event $f4 readable {script 4}
    testfevent delete
    list [chan event $f readable] [chan event $f2 readable] \
	[chan event $f3 readable] [chan event $f4 readable]
} -cleanup {
    chan close $f
    chan close $f2
    chan close $f3
    chan close $f4
} -result {{script 1} {} {} {script 4}}
test chan-io-47.3 {deleting chan event on interpreter delete} -setup {
    set f  [open $path(foo) r]
    set f2 [open $path(foo) r]
    set f3 [open $path(foo) r]
    set f4 [open $path(foo) r]
} -constraints {testfevent fileevent} -body {
    testfevent create
    testfevent share $f3
    testfevent share $f4
    chan event $f readable {script 1}
    chan event $f2 readable {script 2}
    testfevent cmd "chan event $f3 readable {script 3}
      chan event $f4 readable {script 4}"
    testfevent delete
    list [chan event $f readable] [chan event $f2 readable] \
	[chan event $f3 readable] [chan event $f4 readable]
} -cleanup {
    chan close $f
    chan close $f2
    chan close $f3
    chan close $f4
} -result {{script 1} {script 2} {} {}}
test chan-io-47.4 {file events on shared files and multiple interpreters} -setup {
    set f  [open $path(foo) r]
    set f2 [open $path(foo) r]
} -constraints {testfevent fileevent} -body {
    testfevent create
    testfevent share $f
    testfevent cmd "chan event $f readable {script 1}"
    chan event $f readable {script 2}
    chan event $f2 readable {script 3}
    list [chan event $f2 readable] [testfevent cmd "chan event $f readable"] \
	[chan event $f readable]
} -cleanup {
    testfevent delete
    chan close $f
    chan close $f2
} -result {{script 3} {script 1} {script 2}}
test chan-io-47.5 {file events on shared files, deleting file events} -setup {
    set f [open $path(foo) r]
} -body {
    testfevent create
    testfevent share $f
    testfevent cmd "chan event $f readable {script 1}"
    chan event $f readable {script 2}
    testfevent cmd "chan event $f readable {}"
    list [testfevent cmd "chan event $f readable"] [chan event $f readable]
} -constraints {testfevent fileevent} -cleanup {
    testfevent delete
    chan close $f
} -result {{} {script 2}}
test chan-io-47.6 {file events on shared files, deleting file events} -setup {
    set f [open $path(foo) r]
} -body {
    testfevent create
    testfevent share $f
    testfevent cmd "chan event $f readable {script 1}"
    chan event $f readable {script 2}
    chan event $f readable {}
    list [testfevent cmd "chan event $f readable"] [chan event $f readable]
} -constraints {testfevent fileevent} -cleanup {
    testfevent delete
    chan close $f
} -result {{script 1} {}}

set path(bar) [makeFile {} bar]

test chan-io-48.1 {testing readability conditions} {fileevent} {
    set f [open $path(bar) w]
    chan puts $f abcdefg
    chan puts $f abcdefg
    chan puts $f abcdefg
    chan puts $f abcdefg
    chan puts $f abcdefg
    chan close $f
    set f [open $path(bar) r]
    chan event $f readable [namespace code {
	lappend l called
	if {[chan eof $f]} {
	    chan close $f
	    set x done
	} else {
	    chan gets $f
	}
    }]
    set l ""
    variable x not_done
    vwait [namespace which -variable x]
    list $x $l
} {done {called called called called called called called}}
test chan-io-48.2 {testing readability conditions} {nonBlockFiles fileevent} {
    set f [open $path(bar) w]
    chan puts $f abcdefg
    chan puts $f abcdefg
    chan puts $f abcdefg
    chan puts $f abcdefg
    chan puts $f abcdefg
    chan close $f
    set f [open $path(bar) r]
    chan event $f readable [namespace code {
	lappend l called
	if {[chan eof $f]} {
	    chan close $f
	    set x done
	} else {
	    chan gets $f
	}
    }]
    chan configure $f -blocking off
    set l ""
    variable x not_done
    vwait [namespace which -variable x]
    list $x $l
} {done {called called called called called called called}}
set path(my_script) [makeFile {} my_script]
test chan-io-48.3 {testing readability conditions} -setup {
    set l ""
} -constraints {stdio unix nonBlockFiles openpipe fileevent} -body {
    set f [open $path(bar) w]
    chan puts $f abcdefg
    chan puts $f abcdefg
    chan puts $f abcdefg
    chan puts $f abcdefg
    chan puts $f abcdefg
    chan close $f
    set f [open $path(my_script) w]
    chan puts $f {
	proc copy_slowly {f} {
	    while {![chan eof $f]} {
		chan puts [chan gets $f]
		after 200
	    }
	    chan close $f
	}
    }
    chan close $f
    set f [openpipe]
    chan event $f readable [namespace code {
	if {[chan eof $f]} {
	    set x done
	} else {
	    chan gets $f
	    lappend l [chan blocked $f]
	    chan gets $f
	    lappend l [chan blocked $f]
	}
    }]
    chan configure $f -buffering line
    chan configure $f -blocking off
    variable x not_done
    chan puts $f [list source $path(my_script)]
    chan puts $f "set f \[[list open $path(bar) r]]"
    chan puts $f {copy_slowly $f}
    chan puts $f {exit}
    vwait [namespace which -variable x]
    list $x $l
} -cleanup {
    chan close $f
} -result {done {0 1 0 1 0 1 0 1 0 1 0 1 0 0}}
test chan-io-48.4 {lf write, testing readability, ^Z termination, auto read mode} -setup {
    file delete $path(test1)
    set c 0
    set l ""
} -constraints {fileevent} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf
    chan puts -nonewline $f [format "abc\ndef\n%c" 26]
    chan close $f
    set f [open $path(test1) r]
    chan configure $f -translation auto -eofchar \x1a
    chan event $f readable [namespace code {
	if {[chan eof $f]} {
	   set x done
	   chan close $f
	} else {
	   lappend l [chan gets $f]
	   incr c
	}
    }]
    variable x
    vwait [namespace which -variable x]
    list $c $l
} -result {3 {abc def {}}}
test chan-io-48.5 {lf write, testing readability, ^Z in middle, auto read mode} -setup {
    file delete $path(test1)
    set c 0
    set l ""
} -constraints {fileevent} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf
    chan puts -nonewline $f [format "abc\ndef\n%cfoo\nbar\n" 26]
    chan close $f
    set f [open $path(test1) r]
    chan configure $f -eofchar \x1a -translation auto
    chan event $f readable [namespace code {
	if {[chan eof $f]} {
	   set x done
	   chan close $f
	} else {
	   lappend l [chan gets $f]
	   incr c
	}
    }]
    variable x
    vwait [namespace which -variable x]
    list $c $l
} -result {3 {abc def {}}}
test chan-io-48.6 {cr write, testing readability, ^Z termination, auto read mode} -setup {
    file delete $path(test1)
    set c 0
    set l ""
} -constraints {fileevent} -body {
    set f [open $path(test1) w]
    chan configure $f -translation cr
    chan puts -nonewline $f [format "abc\ndef\n%c" 26]
    chan close $f
    set f [open $path(test1) r]
    chan configure $f -translation auto -eofchar \x1a
    chan event $f readable [namespace code {
	if {[chan eof $f]} {
	   set x done
	   chan close $f
	} else {
	   lappend l [chan gets $f]
	   incr c
	}
    }]
    variable x
    vwait [namespace which -variable x]
    list $c $l
} -result {3 {abc def {}}}
test chan-io-48.7 {cr write, testing readability, ^Z in middle, auto read mode} -setup {
    file delete $path(test1)
    set c 0
    set l ""
} -constraints {fileevent} -body {
    set f [open $path(test1) w]
    chan configure $f -translation cr
    chan puts -nonewline $f [format "abc\ndef\n%cfoo\nbar\n" 26]
    chan close $f
    set f [open $path(test1) r]
    chan configure $f -eofchar \x1a -translation auto
    chan event $f readable [namespace code {
	if {[chan eof $f]} {
	   set x done
	   chan close $f
	} else {
	   lappend l [chan gets $f]
	   incr c
	}
    }]
    variable x
    vwait [namespace which -variable x]
    list $c $l
} -result {3 {abc def {}}}
test chan-io-48.8 {crlf write, testing readability, ^Z termination, auto read mode} -setup {
    file delete $path(test1)
    set c 0
    set l ""
} -constraints {fileevent} -body {
    set f [open $path(test1) w]
    chan configure $f -translation crlf
    chan puts -nonewline $f [format "abc\ndef\n%c" 26]
    chan close $f
    set f [open $path(test1) r]
    chan configure $f -translation auto -eofchar \x1a
    chan event $f readable [namespace code {
	if {[chan eof $f]} {
	   set x done
	   chan close $f
	} else {
	   lappend l [chan gets $f]
	   incr c
	}
    }]
    variable x
    vwait [namespace which -variable x]
    list $c $l
} -result {3 {abc def {}}}
test chan-io-48.9 {crlf write, testing readability, ^Z in middle, auto read mode} -setup {
    file delete $path(test1)
    set c 0
    set l ""
} -constraints {fileevent} -body {
    set f [open $path(test1) w]
    chan configure $f -translation crlf
    chan puts -nonewline $f [format "abc\ndef\n%cfoo\nbar\n" 26]
    chan close $f
    set f [open $path(test1) r]
    chan configure $f -eofchar \x1a -translation auto
    chan event $f readable [namespace code {
	if {[chan eof $f]} {
	   set x done
	   chan close $f
	} else {
	   lappend l [chan gets $f]
	   incr c
	}
    }]
    variable x
    vwait [namespace which -variable x]
    list $c $l
} -result {3 {abc def {}}}
test chan-io-48.10 {lf write, testing readability, ^Z in middle, lf read mode} -setup {
    file delete $path(test1)
    set c 0
    set l ""
} -constraints {fileevent} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf
    chan puts -nonewline $f [format "abc\ndef\n%cfoo\nbar\n" 26]
    chan close $f
    set f [open $path(test1) r]
    chan configure $f -eofchar \x1a -translation lf
    chan event $f readable [namespace code {
	if {[chan eof $f]} {
	   set x done
	   chan close $f
	} else {
	   lappend l [chan gets $f]
	   incr c
	}
    }]
    variable x
    vwait [namespace which -variable x]
    list $c $l
} -result {3 {abc def {}}}
test chan-io-48.11 {lf write, testing readability, ^Z termination, lf read mode} -setup {
    file delete $path(test1)
    set c 0
    set l ""
} -constraints {fileevent} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf
    chan puts -nonewline $f [format "abc\ndef\n%c" 26]
    chan close $f
    set f [open $path(test1) r]
    chan configure $f -translation lf -eofchar \x1a
    chan event $f readable [namespace code {
	if {[chan eof $f]} {
	   set x done
	   chan close $f
	} else {
	   lappend l [chan gets $f]
	   incr c
	}
    }]
    variable x
    vwait [namespace which -variable x]
    list $c $l
} -result {3 {abc def {}}}
test chan-io-48.12 {cr write, testing readability, ^Z in middle, cr read mode} -setup {
    file delete $path(test1)
    set c 0
    set l ""
} -constraints {fileevent} -body {
    set f [open $path(test1) w]
    chan configure $f -translation cr
    chan puts -nonewline $f [format "abc\ndef\n%cfoo\nbar\n" 26]
    chan close $f
    set f [open $path(test1) r]
    chan configure $f -eofchar \x1a -translation cr
    chan event $f readable [namespace code {
	if {[chan eof $f]} {
	   set x done
	   chan close $f
	} else {
	   lappend l [chan gets $f]
	   incr c
	}
    }]
    variable x
    vwait [namespace which -variable x]
    list $c $l
} -result {3 {abc def {}}}
test chan-io-48.13 {cr write, testing readability, ^Z termination, cr read mode} -setup {
    file delete $path(test1)
    set c 0
    set l ""
} -constraints {fileevent} -body {
    set f [open $path(test1) w]
    chan configure $f -translation cr
    chan puts -nonewline $f [format "abc\ndef\n%c" 26]
    chan close $f
    set f [open $path(test1) r]
    chan configure $f -translation cr -eofchar \x1a
    chan event $f readable [namespace code {
	if {[chan eof $f]} {
	   set x done
	   chan close $f
	} else {
	   lappend l [chan gets $f]
	   incr c
	}
    }]
    variable x
    vwait [namespace which -variable x]
    list $c $l
} -result {3 {abc def {}}}
test chan-io-48.14 {crlf write, testing readability, ^Z in middle, crlf read mode} -setup {
    file delete $path(test1)
    set c 0
    set l ""
} -constraints {fileevent} -body {
    set f [open $path(test1) w]
    chan configure $f -translation crlf
    chan puts -nonewline $f [format "abc\ndef\n%cfoo\nbar\n" 26]
    chan close $f
    set f [open $path(test1) r]
    chan configure $f -eofchar \x1a -translation crlf
    chan event $f readable [namespace code {
	if {[chan eof $f]} {
	   set x done
	   chan close $f
	} else {
	   lappend l [chan gets $f]
	   incr c
	}
    }]
    variable x
    vwait [namespace which -variable x]
    list $c $l
} -result {3 {abc def {}}}
test chan-io-48.15 {crlf write, testing readability, ^Z termi, crlf read mode} -setup {
    file delete $path(test1)
    set c 0
    set l ""
} -constraints {fileevent} -body {
    set f [open $path(test1) w]
    chan configure $f -translation crlf
    chan puts -nonewline $f [format "abc\ndef\n%c" 26]
    chan close $f
    set f [open $path(test1) r]
    chan configure $f -translation crlf -eofchar \x1a
    chan event $f readable [namespace code {
	if {[chan eof $f]} {
	   set x done
	   chan close $f
	} else {
	   lappend l [chan gets $f]
	   incr c
	}
    }]
    variable x
    vwait [namespace which -variable x]
    list $c $l
} -result {3 {abc def {}}}

test chan-io-49.1 {testing crlf reading, leftover cr disgorgment} -setup {
    file delete $path(test1)
    set l ""
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf
    chan puts -nonewline $f "a\rb\rc\r\n"
    chan close $f
    set f [open $path(test1) r]
    lappend l [file size $path(test1)]
    chan configure $f -translation crlf
    lappend l [chan read $f 1]
    lappend l [chan tell $f]
    lappend l [chan read $f 1]
    lappend l [chan tell $f]
    lappend l [chan read $f 1]
    lappend l [chan tell $f]
    lappend l [chan read $f 1]
    lappend l [chan tell $f]
    lappend l [chan read $f 1]
    lappend l [chan tell $f]
    lappend l [chan read $f 1]
    lappend l [chan tell $f]
    lappend l [chan eof $f]
    lappend l [chan read $f 1]
    lappend l [chan eof $f]
} -cleanup {
    chan close $f
} -result "7 a 1 [list \r] 2 b 3 [list \r] 4 c 5 {
} 7 0 {} 1"
test chan-io-49.2 {testing crlf reading, leftover cr disgorgment} -setup {
    file delete $path(test1)
    set l ""
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf
    chan puts -nonewline $f "a\rb\rc\r\n"
    chan close $f
    set f [open $path(test1) r]
    lappend l [file size $path(test1)]
    chan configure $f -translation crlf
    lappend l [chan read $f 2]
    lappend l [chan tell $f]
    lappend l [chan read $f 2]
    lappend l [chan tell $f]
    lappend l [chan read $f 2]
    lappend l [chan tell $f]
    lappend l [chan eof $f]
    lappend l [chan read $f 2]
    lappend l [chan tell $f]
    lappend l [chan eof $f]
} -cleanup {
    chan close $f
} -result "7 [list a\r] 2 [list b\r] 4 [list c\n] 7 0 {} 7 1"
test chan-io-49.3 {testing crlf reading, leftover cr disgorgment} -setup {
    file delete $path(test1)
    set l ""
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf
    chan puts -nonewline $f "a\rb\rc\r\n"
    chan close $f
    set f [open $path(test1) r]
    lappend l [file size $path(test1)]
    chan configure $f -translation crlf
    lappend l [chan read $f 3]
    lappend l [chan tell $f]
    lappend l [chan read $f 3]
    lappend l [chan tell $f]
    lappend l [chan eof $f]
    lappend l [chan read $f 3]
    lappend l [chan tell $f]
    lappend l [chan eof $f]
} -cleanup {
    chan close $f
} -result "7 [list a\rb] 3 [list \rc\n] 7 0 {} 7 1"
test chan-io-49.4 {testing crlf reading, leftover cr disgorgment} -setup {
    file delete $path(test1)
    set l ""
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf
    chan puts -nonewline $f "a\rb\rc\r\n"
    chan close $f
    set f [open $path(test1) r]
    lappend l [file size $path(test1)]
    chan configure $f -translation crlf
    lappend l [chan read $f 3]
    lappend l [chan tell $f]
    lappend l [chan gets $f]
    lappend l [chan tell $f]
    lappend l [chan eof $f]
    lappend l [chan gets $f]
    lappend l [chan tell $f]
    lappend l [chan eof $f]
} -cleanup {
    chan close $f
} -result "7 [list a\rb] 3 [list \rc] 7 0 {} 7 1"
test chan-io-49.5 {testing crlf reading, leftover cr disgorgment} -setup {
    file delete $path(test1)
    set l ""
} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf
    chan puts -nonewline $f "a\rb\rc\r\n"
    chan close $f
    set f [open $path(test1) r]
    lappend l [file size $path(test1)]
    chan configure $f -translation crlf
    lappend l [set x [chan gets $f]]
    lappend l [chan tell $f]
    lappend l [chan gets $f]
    lappend l [chan tell $f]
    lappend l [chan eof $f]
} -cleanup {
    chan close $f
} -result [list 7 a\rb\rc 7 {} 7 1]

test chan-io-50.1 {testing handler deletion} -setup {
    file delete $path(test1)
} -constraints {testchannelevent} -body {
    set f [open $path(test1) w]
    chan close $f
    set f [open $path(test1) r]
    testchannelevent $f add readable [namespace code {
	variable z called
	testchannelevent $f delete 0
    }]
    variable z not_called
    update
    return $z
} -cleanup {
    chan close $f
} -result called
test chan-io-50.2 {testing handler deletion with multiple handlers} -setup {
    file delete $path(test1)
    chan close [open $path(test1) w]
    set z ""
} -constraints {testchannelevent} -body {
    set f [open $path(test1) r]
    testchannelevent $f add readable [namespace code [list delhandler $f 1]]
    testchannelevent $f add readable [namespace code [list delhandler $f 0]]
    proc delhandler {f i} {
	variable z
	lappend z "called delhandler $f $i"
	testchannelevent $f delete 0
    }
    update
    string equal $z \
	[list [list called delhandler $f 0] [list called delhandler $f 1]]
} -cleanup {
    chan close $f
} -result 1
test chan-io-50.3 {testing handler deletion with multiple handlers} -setup {
    file delete $path(test1)
    chan close [open $path(test1) w]
    set z ""
} -constraints {testchannelevent} -body {
    set f [open $path(test1) r]
    testchannelevent $f add readable [namespace code [list notcalled $f 1]]
    testchannelevent $f add readable [namespace code [list delhandler $f 0]]
    proc notcalled {f i} {
	variable z
	lappend z "notcalled was called!! $f $i"
    }
    proc delhandler {f i} {
	variable z
	testchannelevent $f delete 1
	lappend z "delhandler $f $i called"
	testchannelevent $f delete 0
	lappend z "delhandler $f $i deleted myself"
    }
    update
    string equal $z \
	[list [list delhandler $f 0 called] \
	      [list delhandler $f 0 deleted myself]]
} -cleanup {
    chan close $f
} -result 1
test chan-io-50.4 {testing handler deletion vs reentrant calls} -setup {
    file delete $path(test1)
    set f [open $path(test1) w]
    chan close $f
} -constraints {testchannelevent} -body {
    set f [open $path(test1) r]
    testchannelevent $f add readable [namespace code {
	if {$u eq "recursive"} {
	    testchannelevent $f delete 0
	    lappend z "delrecursive deleting recursive"
	} else {
	    lappend z "delrecursive calling recursive"
	    set u recursive
	    update
	}
    }]
    variable u toplevel
    variable z ""
    update
    return $z
} -cleanup {
    chan close $f
} -result {{delrecursive calling recursive} {delrecursive deleting recursive}}
test chan-io-50.5 {testing handler deletion vs reentrant calls} -setup {
    file delete $path(test1)
    set f [open $path(test1) w]
    chan close $f
} -constraints {testchannelevent} -body {
    set f [open $path(test1) r]
    testchannelevent $f add readable [namespace code [list notcalled $f]]
    testchannelevent $f add readable [namespace code [list del $f]]
    proc notcalled {f} {
	variable z
	lappend z "notcalled was called!! $f"
    }
    proc del {f} {
	variable u
	variable z
	if {$u eq "recursive"} {
	    testchannelevent $f delete 1
	    testchannelevent $f delete 0
	    lappend z "del deleted notcalled"
	    lappend z "del deleted myself"
	} else {
	    set u recursive
	    lappend z "del calling recursive"
	    update
	    lappend z "del after update"
	}
    }
    set z ""
    set u toplevel
    update
    return $z
} -cleanup {
    chan close $f
} -result [list {del calling recursive} {del deleted notcalled} \
	       {del deleted myself} {del after update}]
test chan-io-50.6 {testing handler deletion vs reentrant calls} -setup {
    file delete $path(test1)
    set f [open $path(test1) w]
    chan close $f
} -constraints {testchannelevent} -body {
    set f [open $path(test1) r]
    testchannelevent $f add readable [namespace code [list second $f]]
    testchannelevent $f add readable [namespace code [list first $f]]
    proc first {f} {
	variable u
	variable z
	if {$u eq "toplevel"} {
	    lappend z "first called"
	    set u first
	    update
	    lappend z "first after update"
	} else {
	    lappend z "first called not toplevel"
	}
    }
    proc second {f} {
	variable u
	variable z
	if {$u eq "first"} {
	    lappend z "second called, first time"
	    set u second
	    testchannelevent $f delete 0
	} elseif {$u eq "second"} {
	    lappend z "second called, second time"
	    testchannelevent $f delete 0
	} else {
	    lappend z "second called, cannot happen!"
	    testchannelevent $f removeall
	}
    }
    set z ""
    set u toplevel
    update
    return $z
} -cleanup {
    chan close $f
} -result [list {first called} {first called not toplevel} \
	       {second called, first time} {second called, second time} \
	       {first after update}]

test chan-io-51.1 {Test old socket deletion on Macintosh} -setup {
    set x 0
    set result ""
    variable wait ""
} -constraints {socket} -body {
    proc accept {s a p} {
	variable x
	chan configure $s -blocking off
	chan puts $s "sock[incr x]"
	chan close $s
	variable wait done
    }
    set ss [socket -server [namespace code accept] -myaddr 127.0.0.1 0]
    set port [lindex [chan configure $ss -sockname] 2]
    set cs [socket 127.0.0.1 $port]
    vwait [namespace which -variable wait]
    lappend result [chan gets $cs]
    chan close $cs
    set cs [socket 127.0.0.1 $port]
    vwait [namespace which -variable wait]
    lappend result [chan gets $cs]
    chan close $cs
    set cs [socket 127.0.0.1 $port]
    vwait [namespace which -variable wait]
    lappend result [chan gets $cs]
    chan close $cs
    set cs [socket 127.0.0.1 $port]
    vwait [namespace which -variable wait]
    lappend result [chan gets $cs]
} -cleanup {
    chan close $cs
    chan close $ss
} -result {sock1 sock2 sock3 sock4}

test chan-io-52.1 {TclCopyChannel} -constraints {fcopy} -setup {
    file delete $path(test1)
} -body {
    set f1 [open $thisScript]
    set f2 [open $path(test1) w]
    chan copy $f1 $f2 -command " # "
    chan copy $f1 $f2
} -returnCodes error -cleanup {
    chan close $f1
    chan close $f2
} -match glob -result {channel "*" is busy}
test chan-io-52.2 {TclCopyChannel} -constraints {fcopy} -setup {
    file delete $path(test1)
} -body {
    set f1 [open $thisScript]
    set f2 [open $path(test1) w]
    set f3 [open $thisScript]
    chan copy $f1 $f2 -command " # "
    chan copy $f3 $f2
} -returnCodes error -cleanup {
    chan close $f1
    chan close $f2
    chan close $f3
} -match glob -result {channel "*" is busy}
test chan-io-52.3 {TclCopyChannel} -constraints {fcopy} -setup {
    file delete $path(test1)
} -body {
    set f1 [open $thisScript]
    set f2 [open $path(test1) w]
    chan configure $f1 -translation lf -blocking 0
    chan configure $f2 -translation cr -blocking 0
    set s0 [chan copy $f1 $f2]
    set result [list [chan configure $f1 -blocking] [chan configure $f2 -blocking]]
    chan close $f1
    chan close $f2
    set s1 [file size $thisScript]
    set s2 [file size $path(test1)]
    if {($s1 == $s2) && ($s0 == $s1)} {
        lappend result ok
    }
    return $result
} -result {0 0 ok}
test chan-io-52.4 {TclCopyChannel} -constraints {fcopy} -setup {
    file delete $path(test1)
} -body {
    set f1 [open $thisScript]
    set f2 [open $path(test1) w]
    chan configure $f1 -translation lf -blocking 0
    chan configure $f2 -translation cr -blocking 0
    chan copy $f1 $f2 -size 40
    set result [list [chan configure $f1 -blocking] [chan configure $f2 -blocking]]
    chan close $f1
    chan close $f2
    lappend result [file size $path(test1)]
} -result {0 0 40}
test chan-io-52.5 {TclCopyChannel, all} -constraints {fcopy} -setup {
    file delete $path(test1)
} -body {
    set f1 [open $thisScript]
    set f2 [open $path(test1) w]
    chan configure $f1 -translation lf -blocking 0
    chan configure $f2 -translation lf -blocking 0
    chan copy $f1 $f2 -size -1 ;# -1 means 'copy all', same as if no -size specified.
    set result [list [chan configure $f1 -blocking] [chan configure $f2 -blocking]]
    chan close $f1
    chan close $f2
    if {[file size $thisScript] == [file size $path(test1)]} {
        lappend result ok
    }
    return $result
} -result {0 0 ok}
test chan-io-52.5a {TclCopyChannel, all, other negative value} -setup {
    file delete $path(test1)
} -constraints {fcopy} -body {
    set f1 [open $thisScript]
    set f2 [open $path(test1) w]
    chan configure $f1 -translation lf -blocking 0
    chan configure $f2 -translation lf -blocking 0
    chan copy $f1 $f2 -size -2 ;# < 0 behaves like -1, copy all
    set result [list [chan configure $f1 -blocking] [chan configure $f2 -blocking]]
    chan close $f1
    chan close $f2
    if {[file size $thisScript] == [file size $path(test1)]} {
        lappend result ok
    }
    return $result
} -result {0 0 ok}
test chan-io-52.5b {TclCopyChannel, all, wrap to negative value} -setup {
    file delete $path(test1)
} -constraints {fcopy} -body {
    set f1 [open $thisScript]
    set f2 [open $path(test1) w]
    chan configure $f1 -translation lf -blocking 0
    chan configure $f2 -translation lf -blocking 0
    chan copy $f1 $f2 -size 3221176172 ;# Wrapped to < 0, behaves like -1, copy all
    set result [list [chan configure $f1 -blocking] [chan configure $f2 -blocking]]
    chan close $f1
    chan close $f2
    if {[file size $thisScript] ==  [file size $path(test1)]} {
        lappend result ok
    }
    return $result
} -result {0 0 ok}
test chan-io-52.6 {TclCopyChannel} -setup {
    file delete $path(test1)
} -constraints {fcopy} -body {
    set f1 [open $thisScript]
    set f2 [open $path(test1) w]
    chan configure $f1 -translation lf -blocking 0
    chan configure $f2 -translation lf -blocking 0
    set s0 [chan copy $f1 $f2 -size [expr [file size $thisScript] + 5]]
    set result [list [chan configure $f1 -blocking] [chan configure $f2 -blocking]]
    chan close $f1
    chan close $f2
    set s1 [file size $thisScript]
    set s2 [file size $path(test1)]
    if {($s1 == $s2) && ($s0 == $s1)} {
        lappend result ok
    }
    return $result
} -result {0 0 ok}
test chan-io-52.7 {TclCopyChannel} -constraints {fcopy} -setup {
    file delete $path(test1)
} -body {
    set f1 [open $thisScript]
    set f2 [open $path(test1) w]
    chan configure $f1 -translation lf -blocking 0
    chan configure $f2 -translation lf -blocking 0
    chan copy $f1 $f2
    set result [list [chan configure $f1 -blocking] [chan configure $f2 -blocking]]
    if {[file size $thisScript] == [file size $path(test1)]} {
        lappend result ok
    }
    return $result
} -cleanup {
    chan close $f1
    chan close $f2
} -result {0 0 ok}
test chan-io-52.8 {TclCopyChannel} -setup {
    file delete $path(test1)
    file delete $path(pipe)
} -constraints {stdio openpipe fcopy} -body {
    set f1 [open $path(pipe) w]
    chan configure $f1 -translation lf
    chan puts $f1 "
	chan puts ready
	chan gets stdin
	set f1 \[open [list $thisScript] r\]
	chan configure \$f1 -translation lf
	chan puts \[chan read \$f1 100\]
	chan close \$f1
    "
    chan close $f1
    set f1 [openpipe r+ $path(pipe)]
    chan configure $f1 -translation lf
    chan gets $f1
    chan puts $f1 ready
    chan flush $f1
    set f2 [open $path(test1) w]
    chan configure $f2 -translation lf
    set s0 [chan copy $f1 $f2 -size 40]
    catch {chan close $f1}
    chan close $f2
    list $s0 [file size $path(test1)]
} -result {40 40}
# Empty files, to register them with the test facility
set path(kyrillic.txt)   [makeFile {} kyrillic.txt]
set path(utf8-fcopy.txt) [makeFile {} utf8-fcopy.txt]
set path(utf8-rp.txt)    [makeFile {} utf8-rp.txt]
# Create kyrillic file, use lf translation to avoid os eol issues
set out [open $path(kyrillic.txt) w]
chan configure $out -encoding koi8-r -translation lf
chan puts       $out "\u0410\u0410"
chan close      $out
test chan-io-52.9 {TclCopyChannel & encodings} {fcopy} {
    # Copy kyrillic to UTF-8, using chan copy.
    set in  [open $path(kyrillic.txt) r]
    set out [open $path(utf8-fcopy.txt) w]
    chan configure $in  -encoding koi8-r -translation lf
    chan configure $out -encoding utf-8 -translation lf
    chan copy $in $out
    chan close $in
    chan close $out
    # Do the same again, but differently (read/chan puts).
    set in  [open $path(kyrillic.txt) r]
    set out [open $path(utf8-rp.txt) w]
    chan configure $in  -encoding koi8-r -translation lf
    chan configure $out -encoding utf-8 -translation lf
    chan puts -nonewline $out [chan read $in]
    chan close $in
    chan close $out
    list [file size $path(kyrillic.txt)] \
	    [file size $path(utf8-fcopy.txt)] \
	    [file size $path(utf8-rp.txt)]
} {3 5 5}
test chan-io-52.10 {TclCopyChannel & encodings} {fcopy} {
    # encoding to binary (=> implies that the internal utf-8 is written)
    set in  [open $path(kyrillic.txt) r]
    set out [open $path(utf8-fcopy.txt) w]
    chan configure $in  -encoding koi8-r -translation lf
    # -translation binary is also -encoding binary
    chan configure $out -translation binary
    chan copy $in $out
    chan close $in
    chan close $out
    file size $path(utf8-fcopy.txt)
} 5
test chan-io-52.11 {TclCopyChannel & encodings} -setup {
    set f [open $path(utf8-fcopy.txt) w]
    fconfigure $f -encoding utf-8 -translation lf
    puts $f "\u0410\u0410"
    close $f
} -constraints {fcopy} -body {
    # binary to encoding => the input has to be in utf-8 to make sense to the
    # encoder
    set in  [open $path(utf8-fcopy.txt) r]
    set out [open $path(kyrillic.txt) w]
    # -translation binary is also -encoding binary
    chan configure $in  -translation binary
    chan configure $out -encoding koi8-r -translation lf
    chan copy $in $out
    chan close $in
    chan close $out
    file size $path(kyrillic.txt)
} -result 3

test chan-io-53.1 {CopyData} -setup {
    file delete $path(test1)
} -constraints {fcopy} -body {
    set f1 [open $thisScript]
    set f2 [open $path(test1) w]
    chan configure $f1 -translation lf -blocking 0
    chan configure $f2 -translation cr -blocking 0
    chan copy $f1 $f2 -size 0
    set result [list [chan configure $f1 -blocking] [chan configure $f2 -blocking]]
    chan close $f1
    chan close $f2
    lappend result [file size $path(test1)]
} -result {0 0 0}
test chan-io-53.2 {CopyData} -setup {
    file delete $path(test1)
} -constraints {fcopy} -body {
    set f1 [open $thisScript]
    set f2 [open $path(test1) w]
    chan configure $f1 -translation lf -blocking 0
    chan configure $f2 -translation cr -blocking 0
    chan copy $f1 $f2 -command [namespace code {set s0}]
    set result [list [chan configure $f1 -blocking] [chan configure $f2 -blocking]]
    variable s0
    vwait [namespace which -variable s0]
    chan close $f1
    chan close $f2
    set s1 [file size $thisScript]
    set s2 [file size $path(test1)]
    if {($s1 == $s2) && ($s0 == $s1)} {
        lappend result ok
    }
    return $result
} -result {0 0 ok}
test chan-io-53.3 {CopyData: background read underflow} -setup {
    file delete $path(test1)
    file delete $path(pipe)
} -constraints {stdio unix openpipe fcopy} -body {
    set f1 [open $path(pipe) w]
    chan puts -nonewline $f1 {
	chan puts ready
	chan flush stdout			;# Don't assume line buffered!
	chan copy stdin stdout -command { set x }
	vwait x
	set f [}
    chan puts $f1 [list open $path(test1) w]]
    chan puts $f1 {
	chan configure $f -translation lf
	chan puts $f "done"
	chan close $f
    }
    chan close $f1
    set f1 [openpipe r+ $path(pipe)]
    set result [chan gets $f1]
    chan puts $f1 line1
    chan flush $f1
    lappend result [chan gets $f1]
    chan puts $f1 line2
    chan flush $f1
    lappend result [chan gets $f1]
    chan close $f1
    after 500
    set f [open $path(test1)]
    lappend result [chan read $f]
} -cleanup {
    chan close $f
} -result "ready line1 line2 {done\n}"
test chan-io-53.4 {CopyData: background write overflow} -setup {
    set big bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n
    variable x
    for {set x 0} {$x < 12} {incr x} {
	append big $big
    }
    file delete $path(test1)
    file delete $path(pipe)
} -constraints {stdio unix openpipe fileevent fcopy} -body {
    set f1 [open $path(pipe) w]
    chan puts $f1 {
	chan puts ready
	chan copy stdin stdout -command { set x }
	vwait x
	set f [open $path(test1) w]
	chan configure $f -translation lf
	chan puts $f "done"
	chan close $f
    }
    chan close $f1
    set f1 [openpipe r+ $path(pipe)]
    set result [chan gets $f1]
    chan configure $f1 -blocking 0
    chan puts $f1 $big
    chan flush $f1
    after 500
    set result ""
    chan event $f1 read [namespace code {
	append result [chan read $f1 1024]
	if {[string length $result] >= [string length $big]} {
	    set x done
	}
    }]
    vwait [namespace which -variable x]
    return $x
} -cleanup {
    set big {}
    chan close $f1
} -result done
set result {}
proc FcopyTestAccept {sock args} {
    after 1000 "chan close $sock"
}
proc FcopyTestDone {bytes {error {}}} {
    variable fcopyTestDone
    if {[string length $error]} {
	set fcopyTestDone 1
    } else {
	set fcopyTestDone 0
    }
}
test chan-io-53.5 {CopyData: error during chan copy} {socket fcopy} {
    variable fcopyTestDone
    set listen [socket -server [namespace code FcopyTestAccept] -myaddr 127.0.0.1 0]
    set in [open $thisScript]	;# 126 K
    set out [socket 127.0.0.1 [lindex [chan configure $listen -sockname] 2]]
    catch {unset fcopyTestDone}
    chan close $listen	;# This means the socket open never really succeeds
    chan copy $in $out -command [namespace code FcopyTestDone]
    variable fcopyTestDone
    if ![info exists fcopyTestDone] {
	vwait [namespace which -variable fcopyTestDone]		;# The error occurs here in the b.g.
    }
    chan close $in
    chan close $out
    set fcopyTestDone	;# 1 for error condition
} 1
test chan-io-53.6 {CopyData: error during chan copy} -setup {
    variable fcopyTestDone
    file delete $path(pipe)
    file delete $path(test1)
    catch {unset fcopyTestDone}
} -constraints {stdio openpipe fcopy} -body {
    set f1 [open $path(pipe) w]
    chan puts $f1 "exit 1"
    chan close $f1
    set in [openpipe r+ $path(pipe)]
    set out [open $path(test1) w]
    chan copy $in $out -command [namespace code FcopyTestDone]
    variable fcopyTestDone
    if ![info exists fcopyTestDone] {
	vwait [namespace which -variable fcopyTestDone]
    }
    return $fcopyTestDone	;# 0 for plain end of file
} -cleanup {
    catch {chan close $in}
    chan close $out
} -result 0
proc doFcopy {in out {bytes 0} {error {}}} {
    variable fcopyTestDone
    variable fcopyTestCount
    incr fcopyTestCount $bytes
    if {[string length $error]} {
	set fcopyTestDone 1
    } elseif {[chan eof $in]} {
	set fcopyTestDone 0
    } else {
        # Delay next chan copy to wait for size>0 input bytes
        after 100 [list chan copy $in $out -size 1000 \
		-command [namespace code [list doFcopy $in $out]]]
    }
}
test chan-io-53.7 {CopyData: Flooding chan copy from pipe} -setup {
    variable fcopyTestDone
    file delete $path(pipe)
    catch {unset fcopyTestDone}
} -constraints {stdio openpipe fcopy} -body {
    set fcopyTestCount 0
    set f1 [open $path(pipe) w]
    chan puts $f1 {
	# Write  10 bytes / 10 msec
	proc Write {count} {
	    chan puts -nonewline "1234567890"
	    if {[incr count -1]} {
	        after 10 [list Write $count]
	    } else {
	        set ::ready 1
	    }
	}
	chan configure stdout -buffering none
	Write 345 ;# 3450 bytes ~3.45 sec
	vwait ready
	exit 0
    }
    chan close $f1
    set in [openpipe r+ $path(pipe) &]
    set out [open $path(test1) w]
    doFcopy $in $out
    variable fcopyTestDone
    if {![info exists fcopyTestDone]} {
	vwait [namespace which -variable fcopyTestDone]
    }
    # -1=error 0=script error N=number of bytes
    expr ($fcopyTestDone == 0) ? $fcopyTestCount : -1
} -cleanup {
    catch {chan close $in}
    chan close $out
} -result {3450}
test chan-io-53.8 {CopyData: async callback and error handling, Bug 1932639} -setup {
    # copy progress callback. errors out intentionally
    proc cmd args {
	lappend ::RES "CMD $args"
	error !STOP
    }
    # capture callback error here
    proc ::bgerror args {
	lappend ::RES "bgerror/OK $args"
	set ::forever has-been-reached
	return
    }
    # Files we use for our channels
    set foo [makeFile ashgdfashdgfasdhgfasdhgf foo]
    set bar [makeFile {} bar]
    # Channels to copy between
    set f [open $foo r] ; fconfigure $f -translation binary
    set g [open $bar w] ; fconfigure $g -translation binary -buffering none
} -constraints {stdio openpipe fcopy} -body {
    # Record input size, so that result is always defined
    lappend ::RES [file size $bar]
    # Run the copy. Should not invoke -command now.
    chan copy $f $g -size 2 -command [namespace code cmd]
    # Check that -command was not called synchronously
    set sbs [file size $bar]
    lappend ::RES [expr {($sbs > 0) ? "sync/FAIL" : "sync/OK"}] $sbs
    # Now let the async part happen. Should capture the error in cmd via
    # bgerror. If not break the event loop via timer.
    set token [after 1000 {
	lappend ::RES {bgerror/FAIL timeout}
	set ::forever has-been-reached
    }]
    vwait ::forever
    catch {after cancel $token}
    # Report
    return $::RES
} -cleanup {
    chan close $f
    chan close $g
    catch {unset ::RES}
    catch {unset ::forever}
    rename ::bgerror {}
    removeFile foo
    removeFile bar
} -result {0 sync/OK 0 {CMD 2} {bgerror/OK !STOP}}
test chan-io-53.8a {CopyData: async callback and error handling, Bug 1932639, at eof} -setup {
    # copy progress callback.
    proc cmd args {
	lappend ::RES "CMD $args"
	set ::forever has-been-reached
	return
    }
    # Files we use for our channels
    set foo [makeFile ashgdfashdgfasdhgfasdhgf foo]
    set bar [makeFile {} bar]
    # Channels to copy between
    set f [open $foo r] ; chan configure $f -translation binary
    set g [open $bar w] ; chan configure $g -translation binary -buffering none
} -constraints {stdio openpipe fcopy} -body {
    # Initialize and force eof on the input.
    chan seek $f 0 end ; chan read $f 1
    set ::RES [chan eof $f]
    # Run the copy. Should not invoke -command now.
    chan copy $f $g -size 2 -command [namespace code cmd]
    # Check that -command was not called synchronously
    lappend ::RES [expr {([llength $::RES] > 1) ? "sync/FAIL" : "sync/OK"}]
    # Now let the async part happen. Should capture the eof in cmd
    # If not break the event loop via timer.
    set token [after 1000 {
	lappend ::RES {cmd/FAIL timeout}
	set ::forever has-been-reached
    }]
    vwait ::forever
    catch {after cancel $token}
    # Report
    return $::RES
} -cleanup {
    chan close $f
    chan close $g
    catch {unset ::RES}
    catch {unset ::forever}
    removeFile foo
    removeFile bar
} -result {1 sync/OK {CMD 0}}
test chan-io-53.9 {CopyData: -size and event interaction, Bug 780533} -setup {
    set out [makeFile {} out]
    set err [makeFile {} err]
    set pipe [open "|[list [info nameofexecutable] 2> $err]" r+]
    chan configure $pipe -translation binary -buffering line
    chan puts $pipe {
	chan configure stdout -translation binary -buffering line
	chan puts stderr Waiting...
	after 1000
	foreach x {a b c} {
	    chan puts stderr Looping...
	    chan puts $x
	    after 500
	}
	proc bye args {
	    if {[chan gets stdin line]<0} {
		chan puts stderr "CHILD: EOF detected, exiting"
		exit
	    } else {
		chan puts stderr "CHILD: ignoring line: $line"
	    }
	}
	chan puts stderr Now-sleeping-forever
	chan event stdin readable bye
	vwait forever
    }
    proc ::done args {
	set ::forever OK
	return
    }
    set ::forever {}
    set out [open $out w]
} -constraints {stdio openpipe fcopy} -body {
    chan copy $pipe $out -size 6 -command ::done
    set token [after 5000 {
	set ::forever {fcopy hangs}
    }]
    vwait ::forever
    catch {after cancel $token}
    set ::forever
} -cleanup {
    chan close $pipe
    rename ::done {}
    if {[testConstraint win]} {
	after 1000;		# Allow Windows time to figure out that the
                                # process is gone
    }
    catch {close $out}
    catch {removeFile out}
    catch {removeFile err}
    catch {unset ::forever}
} -result OK
test chan-io-53.10 {Bug 1350564, multi-directional fcopy} -setup {
    set err [makeFile {} err]
    set pipe [open "|[list [info nameofexecutable] 2> $err]" r+]
    chan configure $pipe -translation binary -buffering line
    chan puts $pipe {
	chan configure stderr -buffering line
	# Kill server when pipe closed by invoker.
	proc bye args {
	    if {![chan eof stdin]} { chan gets stdin ; return }
	    chan puts stderr BYE
	    exit
	}
	# Server code. Bi-directional copy between 2 sockets.
	proc geof {sok} {
	    chan puts stderr DONE/$sok
	    chan close $sok
	}
	proc new {sok args} {
	    chan puts stderr NEW/$sok
	    global l srv
	    chan configure $sok -translation binary -buffering none
	    lappend l $sok
	    if {[llength $l] == 2} {
		chan close $srv
		foreach {a b} $l break
		chan copy $a $b -command [list geof $a]
		chan copy $b $a -command [list geof $b]
		chan puts stderr 2COPY
	    }
	    chan puts stderr ...
	}
	chan puts stderr SRV
	set l {}
	set srv [socket -server new 9999]
	chan puts stderr WAITING
	chan event stdin readable bye
	chan puts OK
	vwait forever
    }
    # wait for OK from server.
    chan gets $pipe
    # Now the two clients.
    proc done {sock} {
	if {[chan eof $sock]} { chan close $sock ; return }
	lappend ::forever [chan gets $sock]
	return
    }
    set a [socket 127.0.0.1 9999]
    set b [socket 127.0.0.1 9999]
    chan configure $a -translation binary -buffering none
    chan configure $b -translation binary -buffering none
    chan event  $a readable [namespace code "done $a"]
    chan event  $b readable [namespace code "done $b"]
} -constraints {stdio openpipe fcopy} -body {
    # Now pass data through the server in both directions.
    set ::forever {}
    chan puts $a AB
    vwait ::forever
    chan puts $b BA
    vwait ::forever
    set ::forever
} -cleanup {
    catch {chan close $a}
    catch {chan close $b}
    chan close $pipe
    if {[testConstraint win]} {
	after 1000		;# Give Windows time to kill the process
    }
    removeFile err
    catch {unset ::forever}
} -result {AB BA}

test chan-io-54.1 {Recursive channel events} {socket fileevent} {
    # This test checks to see if file events are delivered during recursive
    # event loops when there is buffered data on the channel.
    proc accept {s a p} {
	variable as
	chan configure $s -translation lf
	chan puts $s "line 1\nline2\nline3"
	chan flush $s
	set as $s
    }
    proc readit {s next} {
	variable x
	variable result
	lappend result $next
	if {$next == 1} {
	    chan event $s readable [namespace code [list readit $s 2]]
	    vwait [namespace which -variable x]
	}
	incr x
    }
    set ss [socket -server [namespace code accept] -myaddr 127.0.0.1 0]
    # We need to delay on some systems until the creation of the server socket
    # completes.
    set done 0
    for {set i 0} {$i < 10} {incr i} {
	if {![catch {
	    set cs [socket 127.0.0.1 [lindex [chan configure $ss -sockname] 2]]
	}]} then {
	    set done 1
	    break
	}
	after 100
    }
    if {$done == 0} {
	chan close $ss
	error "failed to connect to server"
    }
    variable result {}
    variable x 0
    variable as
    vwait [namespace which -variable as]
    chan configure $cs -translation lf
    lappend result [chan gets $cs]
    chan configure $cs -blocking off
    chan event $cs readable [namespace code [list readit $cs 1]]
    set a [after 2000 [namespace code { set x failure }]]
    vwait [namespace which -variable x]
    after cancel $a
    chan close $as
    chan close $ss
    chan close $cs
    list $result $x
} {{{line 1} 1 2} 2}
test chan-io-54.2 {Testing for busy-wait in recursive channel events} -setup {
    set accept {}
    set after {}
    variable done 0
} -constraints {socket fileevent} -body {
    variable s [socket -server [namespace code accept] -myaddr 127.0.0.1 0]
    proc accept {s a p} {
	variable counter 0
	variable accept $s
	chan configure $s -blocking off -buffering line -translation lf
	chan event $s readable [namespace code "doit $s"]
    }
    proc doit {s} {
	variable counter
	variable after
	incr counter
	if {[chan gets $s] eq ""} {
	    chan event $s readable [namespace code "doit1 $s"]
	    set after [after 1000 [namespace code {
		chan puts $writer hello
		chan flush $writer
		set done 1
	    }]]
	}
    }
    proc doit1 {s} {
	variable counter
	variable accept
	incr counter
	chan gets $s
	chan close $s
	set accept {}
    }
    proc producer {} {
	variable s
	variable writer
	set writer [socket 127.0.0.1 [lindex [chan configure $s -sockname] 2]]
	chan configure $writer -buffering line
	chan puts -nonewline $writer hello
	chan flush $writer
    }
    producer
    vwait [namespace which -variable done]
    chan close $writer
    chan close $s
    after cancel $after
    return $counter
} -cleanup {
    if {$accept ne {}} {chan close $accept}
} -result 1

set path(fooBar) [makeFile {} fooBar]

test chan-io-55.1 {ChannelEventScriptInvoker: deletion} -constraints {
    fileevent
} -setup {
    variable x
    proc eventScript {fd} {
	variable x
	chan close $fd
	error "planned error"
	set x whoops
    }
    proc myHandler args {
	variable x got_error
    }
    set handler [interp bgerror {}]
    interp bgerror {} [namespace which myHandler]
} -body {
    set f [open $path(fooBar) w]
    chan event $f writable [namespace code [list eventScript $f]]
    variable x not_done
    vwait [namespace which -variable x]
    return $x
} -cleanup {
    interp bgerror {} $handler
} -result {got_error}

test chan-io-56.1 {ChannelTimerProc} {testchannelevent} {
    set f [open $path(fooBar) w]
    chan puts $f "this is a test"
    chan close $f
    set f [open $path(fooBar) r]
    testchannelevent $f add readable [namespace code {
	chan read $f 1
	incr x
    }]
    variable x 0
    vwait [namespace which -variable x]
    vwait [namespace which -variable x]
    set result $x
    testchannelevent $f set 0 none
    after idle [namespace code {set y done}]
    variable y
    vwait [namespace which -variable y]
    chan close $f
    lappend result $y
} {2 done}

test chan-io-57.1 {buffered data and file events, gets} -setup {
    variable s2
} -constraints {fileevent} -body {
    proc accept {sock args} {
	variable s2
	set s2 $sock
    }
    set server [socket -server [namespace code accept] -myaddr 127.0.0.1 0]
    set s [socket 127.0.0.1 [lindex [chan configure $server -sockname] 2]]
    vwait [namespace which -variable s2]
    update
    chan event $s2 readable [namespace code {lappend result readable}]
    chan puts $s "12\n34567890"
    chan flush $s
    variable result [chan gets $s2]
    after 1000 [namespace code {lappend result timer}]
    vwait [namespace which -variable result]
    lappend result [chan gets $s2]
    vwait [namespace which -variable result]
    return $result
} -cleanup {
    chan close $s
    chan close $s2
    chan close $server
} -result {12 readable 34567890 timer}
test chan-io-57.2 {buffered data and file events, read} -setup {
    variable s2
} -constraints {fileevent} -body {
    proc accept {sock args} {
	variable s2
	set s2 $sock
    }
    set server [socket -server [namespace code accept] -myaddr 127.0.0.1 0]
    set s [socket 127.0.0.1 [lindex [chan configure $server -sockname] 2]]
    vwait [namespace which -variable s2]
    update
    chan event $s2 readable [namespace code {lappend result readable}]
    chan puts -nonewline $s "1234567890"
    chan flush $s
    variable result [chan read $s2 1]
    after 1000 [namespace code {lappend result timer}]
    vwait [namespace which -variable result]
    lappend result [chan read $s2 9]
    vwait [namespace which -variable result]
    return $result
} -cleanup {
    chan close $s
    chan close $s2
    chan close $server
} -result {1 readable 234567890 timer}

test chan-io-58.1 {Tcl_NotifyChannel and error when closing} {stdio unixOrPc openpipe fileevent} {
    set out [open $path(script) w]
    chan puts $out {
	chan puts "normal message from pipe"
	chan puts stderr "error message from pipe"
	exit 1
    }
    proc readit {pipe} {
	variable x
	variable result
	if {[chan eof $pipe]} {
	    set x [catch {chan close $pipe} line]
	    lappend result catch $line
	} else {
	    chan gets $pipe line
	    lappend result chan gets $line
	}
    }
    chan close $out
    set pipe [openpipe r $path(script)]
    chan event $pipe readable [namespace code [list readit $pipe]]
    variable x ""
    set result ""
    vwait [namespace which -variable x]
    list $x $result
} {1 {chan gets {normal message from pipe} chan gets {} catch {error message from pipe}}}

test chan-io-59.1 {Thread reference of channels} {testmainthread testchannel} {
    # TIP #10
    # More complicated tests (like that the reference changes as a channel is
    # moved from thread to thread) can be done only in the extension which
    # fully implements the moving of channels between threads, i.e. 'Threads'.
    set f [open $path(longfile) r]
    set result [testchannel mthread $f]
    chan close $f
    string equal $result [testmainthread]
} {1}

test chan-io-60.1 {writing illegal utf sequences} {openpipe fileevent testbytestring} {
    # This test will hang in older revisions of the core.
    set out [open $path(script) w]
    chan puts $out {
	chan puts [testbytestring \xe2]
	exit 1
    }
    proc readit {pipe} {
	variable x
	variable result
	if {[chan eof $pipe]} {
	    set x [catch {chan close $pipe} line]
	    lappend result catch $line
	} else {
	    chan gets $pipe line
	    lappend result gets $line
	}
    }
    chan close $out
    set pipe [openpipe r $path(script)]
    chan event $pipe readable [namespace code [list readit $pipe]]
    variable x ""
    set result ""
    vwait [namespace which -variable x]
    # cut of the remainder of the error stack, especially the filename
    set result [lreplace $result 3 3 [lindex [split [lindex $result 3] \n] 0]]
    list $x $result
} {1 {gets {} catch {error writing "stdout": invalid argument}}}

test chan-io-61.1 {Reset eof state after changing the eof char} -setup {
    set datafile [makeFile {} eofchar]
    set f [open $datafile w]
    chan configure $f -translation binary
    chan puts -nonewline $f [string repeat "Ho hum\n" 11]
    chan puts $f =
    set line [string repeat "Ge gla " 4]
    chan puts -nonewline $f [string repeat [string trimright $line]\n 834]
    chan close $f
} -body {
    set f [open $datafile r]
    chan configure $f -eofchar =
    set res {}
    lappend res [chan read $f; chan tell $f]
    chan configure $f -eofchar {}
    lappend res [chan read $f 1]
    lappend res [chan read $f; chan tell $f]
    # Any seek zaps the internals into a good state.
    #chan seek $f 0 start
    #chan seek $f 0 current
    #lappend res [chan read $f; chan tell $f]
} -cleanup {
    chan close $f
    removeFile eofchar
} -result {77 = 23431}

# Test the cutting and splicing of channels, this is incidentially the
# attach/detach facility of package Thread, but __without any safeguards__. It
# can also be used to emulate transfer of channels between threads, and is
# used for that here.

test chan-io-70.0 {Cutting & Splicing channels} -setup {
    set f [makeFile {... dummy ...} cutsplice]
    set res {}
} -constraints {testchannel} -body {
    set c [open $f r]
    lappend res [catch {chan seek $c 0 start}]
    testchannel cut $c
    lappend res [catch {chan seek $c 0 start}]
    testchannel splice $c
    lappend res [catch {chan seek $c 0 start}]
} -cleanup {
    chan close $c
    removeFile cutsplice
} -result {0 1 0}

test chan-io-70.1 {Transfer channel} -setup {
    set f [makeFile {... dummy ...} cutsplice]
    set res {}
} -constraints {testchannel thread} -body {
    set c [open $f r]
    lappend res [catch {chan seek $c 0 start}]
    testchannel cut $c
    lappend res [catch {chan seek $c 0 start}]
    set tid [thread::create -preserved]
    thread::send $tid [list set c $c]
    thread::send $tid {load {} Tcltest}
    lappend res [thread::send $tid {
	testchannel splice $c
	set res [catch {chan seek $c 0 start}]
	chan close $c
	set res
    }]
} -cleanup {
    thread::release $tid
    removeFile cutsplice
} -result {0 1 0}

# ### ### ### ######### ######### #########

foreach {n msg expected} {
     0 {}                                 {}
     1 {{message only}}                   {{message only}}
     2 {-options x}                       {-options x}
     3 {-options {x y} {the message}}     {-options {x y} {the message}}

     4 {-code 1     -level 0 -f ba snarf} {-code 1     -level 0 -f ba snarf}
     5 {-code 0     -level 0 -f ba snarf} {-code 1     -level 0 -f ba snarf}
     6 {-code 1     -level 5 -f ba snarf} {-code 1     -level 0 -f ba snarf}
     7 {-code 0     -level 5 -f ba snarf} {-code 1     -level 0 -f ba snarf}
     8 {-code error -level 0 -f ba snarf} {-code error -level 0 -f ba snarf}
     9 {-code ok    -level 0 -f ba snarf} {-code 1     -level 0 -f ba snarf}
    10 {-code error -level 5 -f ba snarf} {-code error -level 0 -f ba snarf}
    11 {-code ok    -level 5 -f ba snarf} {-code 1     -level 0 -f ba snarf}
    12 {-code boss  -level 0 -f ba snarf} {-code 1     -level 0 -f ba snarf}
    13 {-code boss  -level 5 -f ba snarf} {-code 1     -level 0 -f ba snarf}
    14 {-code 1     -level 0 -f ba}       {-code 1     -level 0 -f ba}
    15 {-code 0     -level 0 -f ba}       {-code 1     -level 0 -f ba}
    16 {-code 1     -level 5 -f ba}       {-code 1     -level 0 -f ba}
    17 {-code 0     -level 5 -f ba}       {-code 1     -level 0 -f ba}
    18 {-code error -level 0 -f ba}       {-code error -level 0 -f ba}
    19 {-code ok    -level 0 -f ba}       {-code 1     -level 0 -f ba}
    20 {-code error -level 5 -f ba}       {-code error -level 0 -f ba}
    21 {-code ok    -level 5 -f ba}       {-code 1     -level 0 -f ba}
    22 {-code boss  -level 0 -f ba}       {-code 1     -level 0 -f ba}
    23 {-code boss  -level 5 -f ba}       {-code 1     -level 0 -f ba}
    24 {-code 1     -level X -f ba snarf} {-code 1     -level 0 -f ba snarf}
    25 {-code 0     -level X -f ba snarf} {-code 1     -level 0 -f ba snarf}
    26 {-code error -level X -f ba snarf} {-code error -level 0 -f ba snarf}
    27 {-code ok    -level X -f ba snarf} {-code 1     -level 0 -f ba snarf}
    28 {-code boss  -level X -f ba snarf} {-code 1     -level 0 -f ba snarf}
    29 {-code 1     -level X -f ba}       {-code 1     -level 0 -f ba}
    30 {-code 0     -level X -f ba}       {-code 1     -level 0 -f ba}
    31 {-code error -level X -f ba}       {-code error -level 0 -f ba}
    32 {-code ok    -level X -f ba}       {-code 1     -level 0 -f ba}
    33 {-code boss  -level X -f ba}       {-code 1     -level 0 -f ba}

    34 {-code 1 -code 1     -level 0 -f ba snarf} {-code 1 -code 1     -level 0 -f ba snarf}
    35 {-code 1 -code 0     -level 0 -f ba snarf} {-code 1             -level 0 -f ba snarf}
    36 {-code 1 -code 1     -level 5 -f ba snarf} {-code 1 -code 1     -level 0 -f ba snarf}
    37 {-code 1 -code 0     -level 5 -f ba snarf} {-code 1             -level 0 -f ba snarf}
    38 {-code 1 -code error -level 0 -f ba snarf} {-code 1 -code error -level 0 -f ba snarf}
    39 {-code 1 -code ok    -level 0 -f ba snarf} {-code 1             -level 0 -f ba snarf}
    40 {-code 1 -code error -level 5 -f ba snarf} {-code 1 -code error -level 0 -f ba snarf}
    41 {-code 1 -code ok    -level 5 -f ba snarf} {-code 1             -level 0 -f ba snarf}
    42 {-code 1 -code boss  -level 0 -f ba snarf} {-code 1             -level 0 -f ba snarf}
    43 {-code 1 -code boss  -level 5 -f ba snarf} {-code 1             -level 0 -f ba snarf}
    44 {-code 1 -code 1     -level 0 -f ba}       {-code 1 -code 1     -level 0 -f ba}
    45 {-code 1 -code 0     -level 0 -f ba}       {-code 1             -level 0 -f ba}
    46 {-code 1 -code 1     -level 5 -f ba}       {-code 1 -code 1     -level 0 -f ba}
    47 {-code 1 -code 0     -level 5 -f ba}       {-code 1             -level 0 -f ba}
    48 {-code 1 -code error -level 0 -f ba}       {-code 1 -code error -level 0 -f ba}
    49 {-code 1 -code ok    -level 0 -f ba}       {-code 1             -level 0 -f ba}
    50 {-code 1 -code error -level 5 -f ba}       {-code 1 -code error -level 0 -f ba}
    51 {-code 1 -code ok    -level 5 -f ba}       {-code 1             -level 0 -f ba}
    52 {-code 1 -code boss  -level 0 -f ba}       {-code 1             -level 0 -f ba}
    53 {-code 1 -code boss  -level 5 -f ba}       {-code 1             -level 0 -f ba}
    54 {-code 1 -code 1     -level X -f ba snarf} {-code 1 -code 1     -level 0 -f ba snarf}
    55 {-code 1 -code 0     -level X -f ba snarf} {-code 1             -level 0 -f ba snarf}
    56 {-code 1 -code error -level X -f ba snarf} {-code 1 -code error -level 0 -f ba snarf}
    57 {-code 1 -code ok    -level X -f ba snarf} {-code 1             -level 0 -f ba snarf}
    58 {-code 1 -code boss  -level X -f ba snarf} {-code 1             -level 0 -f ba snarf}
    59 {-code 1 -code 1     -level X -f ba}       {-code 1 -code 1     -level 0 -f ba}
    60 {-code 1 -code 0     -level X -f ba}       {-code 1             -level 0 -f ba}
    61 {-code 1 -code error -level X -f ba}       {-code 1 -code error -level 0 -f ba}
    62 {-code 1 -code ok    -level X -f ba}       {-code 1             -level 0 -f ba}
    63 {-code 1 -code boss  -level X -f ba}       {-code 1             -level 0 -f ba}

    64 {-code 0 -code 1     -level 0 -f ba snarf} {-code 1 -level 0 -f ba snarf}
    65 {-code 0 -code 0     -level 0 -f ba snarf} {-code 1 -level 0 -f ba snarf}
    66 {-code 0 -code 1     -level 5 -f ba snarf} {-code 1 -level 0 -f ba snarf}
    67 {-code 0 -code 0     -level 5 -f ba snarf} {-code 1 -level 0 -f ba snarf}
    68 {-code 0 -code error -level 0 -f ba snarf} {-code 1 -level 0 -f ba snarf}
    69 {-code 0 -code ok    -level 0 -f ba snarf} {-code 1 -level 0 -f ba snarf}
    70 {-code 0 -code error -level 5 -f ba snarf} {-code 1 -level 0 -f ba snarf}
    71 {-code 0 -code ok    -level 5 -f ba snarf} {-code 1 -level 0 -f ba snarf}
    72 {-code 0 -code boss  -level 0 -f ba snarf} {-code 1 -level 0 -f ba snarf}
    73 {-code 0 -code boss  -level 5 -f ba snarf} {-code 1 -level 0 -f ba snarf}
    74 {-code 0 -code 1     -level 0 -f ba}       {-code 1 -level 0 -f ba}
    75 {-code 0 -code 0     -level 0 -f ba}       {-code 1 -level 0 -f ba}
    76 {-code 0 -code 1     -level 5 -f ba}       {-code 1 -level 0 -f ba}
    77 {-code 0 -code 0     -level 5 -f ba}       {-code 1 -level 0 -f ba}
    78 {-code 0 -code error -level 0 -f ba}       {-code 1 -level 0 -f ba}
    79 {-code 0 -code ok    -level 0 -f ba}       {-code 1 -level 0 -f ba}
    80 {-code 0 -code error -level 5 -f ba}       {-code 1 -level 0 -f ba}
    81 {-code 0 -code ok    -level 5 -f ba}       {-code 1 -level 0 -f ba}
    82 {-code 0 -code boss  -level 0 -f ba}       {-code 1 -level 0 -f ba}
    83 {-code 0 -code boss  -level 5 -f ba}       {-code 1 -level 0 -f ba}
    84 {-code 0 -code 1     -level X -f ba snarf} {-code 1 -level 0 -f ba snarf}
    85 {-code 0 -code 0     -level X -f ba snarf} {-code 1 -level 0 -f ba snarf}
    86 {-code 0 -code error -level X -f ba snarf} {-code 1 -level 0 -f ba snarf}
    87 {-code 0 -code ok    -level X -f ba snarf} {-code 1 -level 0 -f ba snarf}
    88 {-code 0 -code boss  -level X -f ba snarf} {-code 1 -level 0 -f ba snarf}
    89 {-code 0 -code 1     -level X -f ba}       {-code 1 -level 0 -f ba}
    90 {-code 0 -code 0     -level X -f ba}       {-code 1 -level 0 -f ba}
    91 {-code 0 -code error -level X -f ba}       {-code 1 -level 0 -f ba}
    92 {-code 0 -code ok    -level X -f ba}       {-code 1 -level 0 -f ba}
    93 {-code 0 -code boss  -level X -f ba}       {-code 1 -level 0 -f ba}

    94 {-code 1     -code 1 -level 0 -f ba snarf} {-code 1 -code 1     -level 0 -f ba snarf}
    95 {-code 0     -code 1 -level 0 -f ba snarf} {-code 1             -level 0 -f ba snarf}
    96 {-code 1     -code 1 -level 5 -f ba snarf} {-code 1 -code 1     -level 0 -f ba snarf}
    97 {-code 0     -code 1 -level 5 -f ba snarf} {-code 1             -level 0 -f ba snarf}
    98 {-code error -code 1 -level 0 -f ba snarf} {-code error -code 1 -level 0 -f ba snarf}
    99 {-code ok    -code 1 -level 0 -f ba snarf} {-code 1             -level 0 -f ba snarf}
    a0 {-code error -code 1 -level 5 -f ba snarf} {-code error -code 1 -level 0 -f ba snarf}
    a1 {-code ok    -code 1 -level 5 -f ba snarf} {-code 1             -level 0 -f ba snarf}
    a2 {-code boss  -code 1 -level 0 -f ba snarf} {-code 1             -level 0 -f ba snarf}
    a3 {-code boss  -code 1 -level 5 -f ba snarf} {-code 1             -level 0 -f ba snarf}
    a4 {-code 1     -code 1 -level 0 -f ba}       {-code 1 -code 1     -level 0 -f ba}
    a5 {-code 0     -code 1 -level 0 -f ba}       {-code 1             -level 0 -f ba}
    a6 {-code 1     -code 1 -level 5 -f ba}       {-code 1 -code 1     -level 0 -f ba}
    a7 {-code 0     -code 1 -level 5 -f ba}       {-code 1             -level 0 -f ba}
    a8 {-code error -code 1 -level 0 -f ba}       {-code error -code 1 -level 0 -f ba}
    a9 {-code ok    -code 1 -level 0 -f ba}       {-code 1             -level 0 -f ba}
    b0 {-code error -code 1 -level 5 -f ba}       {-code error -code 1 -level 0 -f ba}
    b1 {-code ok    -code 1 -level 5 -f ba}       {-code 1             -level 0 -f ba}
    b2 {-code boss  -code 1 -level 0 -f ba}       {-code 1             -level 0 -f ba}
    b3 {-code boss  -code 1 -level 5 -f ba}       {-code 1             -level 0 -f ba}
    b4 {-code 1     -code 1 -level X -f ba snarf} {-code 1 -code 1     -level 0 -f ba snarf}
    b5 {-code 0     -code 1 -level X -f ba snarf} {-code 1             -level 0 -f ba snarf}
    b6 {-code error -code 1 -level X -f ba snarf} {-code error -code 1 -level 0 -f ba snarf}
    b7 {-code ok    -code 1 -level X -f ba snarf} {-code 1             -level 0 -f ba snarf}
    b8 {-code boss  -code 1 -level X -f ba snarf} {-code 1             -level 0 -f ba snarf}
    b9 {-code 1     -code 1 -level X -f ba}       {-code 1 -code 1     -level 0 -f ba}
    c0 {-code 0     -code 1 -level X -f ba}       {-code 1             -level 0 -f ba}
    c1 {-code error -code 1 -level X -f ba}       {-code error -code 1 -level 0 -f ba}
    c2 {-code ok    -code 1 -level X -f ba}       {-code 1             -level 0 -f ba}
    c3 {-code boss  -code 1 -level X -f ba}       {-code 1             -level 0 -f ba}

    c4 {-code 1     -code 0 -level 0 -f ba snarf} {-code 1 -level 0 -f ba snarf}
    c5 {-code 0     -code 0 -level 0 -f ba snarf} {-code 1 -level 0 -f ba snarf}
    c6 {-code 1     -code 0 -level 5 -f ba snarf} {-code 1 -level 0 -f ba snarf}
    c7 {-code 0     -code 0 -level 5 -f ba snarf} {-code 1 -level 0 -f ba snarf}
    c8 {-code error -code 0 -level 0 -f ba snarf} {-code 1 -level 0 -f ba snarf}
    c9 {-code ok    -code 0 -level 0 -f ba snarf} {-code 1 -level 0 -f ba snarf}
    d0 {-code error -code 0 -level 5 -f ba snarf} {-code 1 -level 0 -f ba snarf}
    d1 {-code ok    -code 0 -level 5 -f ba snarf} {-code 1 -level 0 -f ba snarf}
    d2 {-code boss  -code 0 -level 0 -f ba snarf} {-code 1 -level 0 -f ba snarf}
    d3 {-code boss  -code 0 -level 5 -f ba snarf} {-code 1 -level 0 -f ba snarf}
    d4 {-code 1     -code 0 -level 0 -f ba}       {-code 1 -level 0 -f ba}
    d5 {-code 0     -code 0 -level 0 -f ba}       {-code 1 -level 0 -f ba}
    d6 {-code 1     -code 0 -level 5 -f ba}       {-code 1 -level 0 -f ba}
    d7 {-code 0     -code 0 -level 5 -f ba}       {-code 1 -level 0 -f ba}
    d8 {-code error -code 0 -level 0 -f ba}       {-code 1 -level 0 -f ba}
    d9 {-code ok    -code 0 -level 0 -f ba}       {-code 1 -level 0 -f ba}
    e0 {-code error -code 0 -level 5 -f ba}       {-code 1 -level 0 -f ba}
    e1 {-code ok    -code 0 -level 5 -f ba}       {-code 1 -level 0 -f ba}
    e2 {-code boss  -code 0 -level 0 -f ba}       {-code 1 -level 0 -f ba}
    e3 {-code boss  -code 0 -level 5 -f ba}       {-code 1 -level 0 -f ba}
    e4 {-code 1     -code 0 -level X -f ba snarf} {-code 1 -level 0 -f ba snarf}
    e5 {-code 0     -code 0 -level X -f ba snarf} {-code 1 -level 0 -f ba snarf}
    e6 {-code error -code 0 -level X -f ba snarf} {-code 1 -level 0 -f ba snarf}
    e7 {-code ok    -code 0 -level X -f ba snarf} {-code 1 -level 0 -f ba snarf}
    e8 {-code boss  -code 0 -level X -f ba snarf} {-code 1 -level 0 -f ba snarf}
    e9 {-code 1     -code 0 -level X -f ba}       {-code 1 -level 0 -f ba}
    f0 {-code 0     -code 0 -level X -f ba}       {-code 1 -level 0 -f ba}
    f1 {-code error -code 0 -level X -f ba}       {-code 1 -level 0 -f ba}
    f2 {-code ok    -code 0 -level X -f ba}       {-code 1 -level 0 -f ba}
    f3 {-code boss  -code 0 -level X -f ba}       {-code 1 -level 0 -f ba}
} {
    test chan-io-71.$n {Tcl_SetChannelError} -setup {
	set f [makeFile {... dummy ...} cutsplice]
    } -constraints {testchannel} -body {
	set c [open $f r]
	testchannel setchannelerror $c [lrange $msg 0 end]
    } -cleanup {
	chan close $c
	removeFile cutsplice
    } -result [lrange $expected 0 end]
    test chan-io-72.$n {Tcl_SetChannelErrorInterp} -setup {
	set f [makeFile {... dummy ...} cutsplice]
    } -constraints {testchannel} -body {
	set c [open $f r]
	testchannel setchannelerrorinterp $c [lrange $msg 0 end]
    } -cleanup {
	chan close $c
	removeFile cutsplice
    } -result [lrange $expected 0 end]
}

test chan-io-73.1 {channel Tcl_Obj SetChannelFromAny} -body {
    # Test for Bug 1847044 - don't spoil type unless we have a valid channel
    chan close [lreplace [list a] 0 end]
} -returnCodes error -match glob -result *

# ### ### ### ######### ######### #########

# cleanup
foreach file [list fooBar longfile script output test1 pipe my_script \
	test2 test3 cat kyrillic.txt utf8-fcopy.txt utf8-rp.txt] {
    removeFile $file
}
cleanupTests
}
namespace delete ::tcl::test::io