Re: t7800-difftool.sh failure on pu

[Junio C Hamano <gitster@xxxxxxxxx>]

Ramsay Jones <ramsay@xxxxxxxxxxxxxxxxxxx> writes:

> Hi Tim,
>
> With the current pu branch, I have t7800.3 (difftool ignores bad --tool values)
> failing on Linux (I haven't tried cygwin or mingw yet). The failure is caused
> by the test for the value of the exit code; for me the exit code is 9 not 1.
>
> I have investigated, briefly, and found *two* alternatives for a fix. ;-)
>
> The first option is to (effectively) revert commit 0440ed72 ("difftool: replace
> system call with Git::command_noisy", 22-03-2012), like so:
>
> -- >8 --
> diff --git a/git-difftool.perl b/git-difftool.perl
> index e1754ff..49613b1 100755
> --- a/git-difftool.perl
> +++ b/git-difftool.perl
> @@ -237,5 +237,7 @@ if (defined($dirdiff)) {
>  
>  	$ENV{GIT_PAGER} = '';
>  	$ENV{GIT_EXTERNAL_DIFF} = 'git-difftool--helper';
> -	git_cmd_try { Git::command_noisy(('diff', @ARGV)) } 'exit code %d';
> +	my @command = ('git', 'diff', @ARGV);
> +	my $rc = system(@command);
> +	exit($rc | ($rc >> 8));
>  }
> -- 8< --

I would prefer this, regardless of the issue.

I actually recall asking Tim about the exit status when I reviewed this
change.
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