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Date:	Mon, 29 Jun 2015 14:45:35 -0700
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Subject:	tclsh does not export changes to env to child process
From:	Stas Maximov <stas DOT maximov AT gmail DOT com>
To:	cygwin AT cygwin DOT com

Hi,

Tcl shell does not export changes to array variable env:
  http://wiki.tcl.tk/env

Test script: test_env_export1:
--------- begin ----------
set env(FILENAME) filename_val
puts $env(PATH)
puts [exec /bin/bash -c {echo $PATH}]
puts $env(FILENAME)
puts [exec /bin/bash -c {echo $FILENAME}]
--------- end ----------

Expect two lines of output "filename_val", receive only one. The bug
affects 'guitool' feature of git-gui.

cygwin 2.0.4-1
tclsh 8.5


Thanks,
Stas.

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