Re: [PATCH 8/9 v12] difftool: teach difftool to handle directory diffs

[David Aguilar <davvid@xxxxxxxxx>]

On Thu, Apr 12, 2012 at 12:31 PM, Junio C Hamano <gitster@xxxxxxxxx> wrote:
> Tim Henigan <tim.henigan@xxxxxxxxx> writes:
>
>> Would the following change be better?
>>
>> -     my $cmd = "git diff --raw --no-abbrev -z " . join(" ", @ARGV);
>> +     my $cmd = "git diff --raw --no-abbrev -z @ARGV";
>
> They look exactly the same to me.

The issue is that this does not properly handle shell characters, IFS, etc.

I think a simple solution would be to use git diff --exit-code --quiet here.

e.g.

    my $rc = system('git', 'diff', '--exit-code', '--quiet', @ARGV);

That avoids the shell and properly handles shell meta-characters, IFS, etc.
-- 
David
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