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Subject: Re: PATHEXT is fundamental to Windows and Should be recognised by CYGWIN
From: Warren Young <wyml AT etr-usa DOT com>
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Date: Tue, 9 Aug 2016 16:24:21 -0600
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On Aug 8, 2016, at 8:00 AM, Erik Soderquist <ErikSoderquist AT gmail DOT com> wrote:
> 
> On Mon, Aug 8, 2016 at 9:52 AM, Erik Soderquist wrote:
>> On Sun, Aug 7, 2016 at 4:11 AM, Herbert Stocker wrote:
>>>> 
>>>> code required to handle .exe and .lnk extensions you don't *want*
>>>> PATHEXT support anymore.
>>> 
>>> Moreso, this code has recently broken my C++ code in Cygwin.
>>> It tried to see if a directory  /dir/subdir/something  existed,
>>> and Cygwin said yes because it found a /dir/subdir/something.exe .
>>> So my program failed.
>> 
>> Were you testing for the existence of a *directory* (
>> /dir/subdir/something/. ) or for anything named *something* in
>> /dir/subdir/ ?

[snip]

> $ touch /tmp/foo.exe
> 
> $ if [ -e /tmp/foo ] ; then echo yes ; else echo no ; fi
> yes

Yes, but:

   $ if [ -d /tmp/foo ] ; then echo yes ; else echo no ; fi
   no

The existence check is because foo == foo.exe == foo.lnk under Cygwin, but the original complaint came from someone checking for a directory.  So, the lesson is, fix the stat(2)/test(1) call, don’t change Cygwin to cope with a bad test.
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