Re: [PATCH v0 2/4] git-gui - remove obsolete Cygwin specific code

> On Sat, Jun 24, 2023 at 5:35 PM Mark Levedahl <mlevedahl@gmail.com> wrote:
>> In the current git release, git-gui runs on Cygwin without enabling any
>> of git-gui's Cygwin specific code.  This happens as the Cygwin specific
>> code in git-gui was (mostly) written in 2007-2008 to work with Cygwin's
>> then supplied Tcl/Tk which was an incompletely ported variant of the
>> 8.4.1 Windows Tcl/Tk code.  In March, 2012, that 8.4.1 package was
>> replaced with a full port based upon the upstream unix/X11 code,
>> since maintained up to date. The two Tcl/Tk packages are completely
>> incompatible, and have different sygnatures.
> Given the context, an understandable typo perhaps: s/sygnatures/signatures/
>
>> When Cygwin's Tcl/Tk signature changed in 2012, git-gui no longer
>> detected Cygwin, so did not enable Cygwin specific code, and the POSIX
>> environment provided by Cygwin since 2012 supported git-gui as a generic
>> unix. Thus, no-one apparently noticed the existence of incompatible
>> Cygwin specific code.
>>
>> However, since commit c5766eae6f2b002396b6cd4f85b62317b707174e in
>> upstream git-gui, the is_Cygwin funcion does detect current Cygwin.  The
>> Cygwin specific code is enabled, causing use of Windows rather than unix
>> pathnames, and enabling incorrect warnings about environment variables
>> that are not relevant for the fully functional unix/X11 Tcl/Tk. The end
>> result is that git-gui is now incommpatible with Cygwin.
> s/incommpatible/incompatible/
>
>> So, delete all Cygwin specific code (code protected by "if is_Cygwin"),
>> thus restoring the post-2012 behaviour. Note that Cygwin specific code
>> is required to enable file browsing and shortcut creation (supported
>> before 2012), but is not addressed in this patch.
>>
>> Signed-off-by: Mark Levedahl <mlevedahl@gmail.com>