[PATCH 7/9 v6] difftool: replace system call with Git::command_noisy

[Tim Henigan <tim.henigan@gmail.com>]

The Git.pm module includes functions intended to standardize working
with Git repositories in Perl scripts. This commit teaches difftool
to use Git::command_noisy rather than a system call to run the diff
command.

Signed-off-by: Tim Henigan <tim.henigan@gmail.com>
---
 git-difftool.perl |   10 +---------
 1 file changed, 1 insertion(+), 9 deletions(-)

diff --git a/git-difftool.perl b/git-difftool.perl
index d4fe998..7366bf5 100755
--- a/git-difftool.perl
+++ b/git-difftool.perl
@@ -75,12 +75,4 @@ if (defined($prompt)) {
 
 $ENV{GIT_PAGER} = '';
 $ENV{GIT_EXTERNAL_DIFF} = 'git-difftool--helper';
-my @command = ('git', 'diff', @ARGV);
-
-# ActiveState Perl for Win32 does not implement POSIX semantics of
-# exec* system call. It just spawns the given executable and finishes
-# the starting program, exiting with code 0.
-# system will at least catch the errors returned by git diff,
-# allowing the caller of git difftool better handling of failures.
-my $rc = system(@command);
-exit($rc | ($rc >> 8));
+git_cmd_try { Git::command_noisy(('diff', @ARGV)) } 'exit code %d';
-- 
1.7.10.rc1.36.g15e879