From mboxrd@z Thu Jan  1 00:00:00 1970
From: Alex Riesen <raa.lkml@gmail.com>
Subject: Re: cygwin: t3200-branch.sh fails with "List form of pipe open not implemented at -e line 22."
Date: Mon, 17 Oct 2005 10:40:30 +0200
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To: Junio C Hamano <junkio@cox.net>
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On 10/16/05, Junio C Hamano <junkio@cox.net> wrote:
> Alex Riesen <raa.lkml@gmail.com> writes:
>
> >> >The message comes from one of the hooks, which are executed even
> >> >though they never meant to, because cygwin apparently uses file
> >> >content or name to detect executability (on FAT).
>
> Is this one of the hooks we ship as examples?  If so, that
> means worse brokenness than just test failing.  It means that
> the hook is not usable in your environment.
>
> I presume it is this line in pre-commit sample hook:
>
>     open $fh, "-|", qw(git-diff-index -p -M --cached HEAD);
>
> Is Perl on Cygwin incapable of handle this in general, or is it
> just what is on your machine being behind?

ActiveState's Windows port of Perl 5.8.6.

$ perl -e 'open $fh, "-|", qw(git-diff-index -p -M --cached HEAD)'
List form of pipe open not implemented at -e line 1.

I think it is not implemented because of Win32 lacking fork(2).