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Re: tclsh does not export changes to env to child process


Interestingly, if environment variable FILENAME was exported when
tclsh called, the test passes. Tclsh falis to export only new env
variable. Compare two results:

$ env FILENAME=gaga tclsh test_env_export1.tcl
filename_val
filename_val
vim
vim
$ env -u FILENAME tclsh test_env_export1.tcl
filename_val

vim
vim


On Tue, Jun 30, 2015 at 9:39 AM, Stas Maximov <stas.maximov@gmail.com> wrote:
> Yakov,
>
> Thanks for the reply.
>
> Apologies for confusion. 8.5 was version of tcl as reported by
> tcl_version. Please find below more information. Note that
> "filename_val" is printed only once -- by tclsh, but the child (bash)
> does not see environment variable FILENAME.
>
> Any specific information that you might want to see?
>
> Stas.
>
>
> $ which tclsh
> /usr/bin/tclsh
>
> $ cygcheck.exe -c tcl cygwin
> Cygwin Package Information
> Package              Version        Status
> cygwin               2.0.4-1        OK
> tcl                  8.5.18-1       OK
>
> $ cat test_env_export1.tcl
> set env(FILENAME) filename_val
> puts $env(FILENAME)
> puts [exec /bin/bash -c {echo $FILENAME}]
> puts $env(EDITOR)
> puts [exec /bin/bash -c {echo $EDITOR}]
>
> $ tclsh test_env_export1.tcl
> filename_val
>
> vim
> vim
>
>
> On Mon, Jun 29, 2015 at 2:45 PM, Stas Maximov <stas.maximov@gmail.com> wrote:
>> 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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