[PATCH 2/3 (amend)] gitweb: Use --no-commit-id in git_commit and git_commitdiff

[Jakub Narebski <jnareb@gmail.com>]

Use --no-commit-id option to git diff-tree command in git_commit and
git_commitdiff to filter out commit ID output that git-diff-tree adds
when called with only one <tree-ish> (not only for --stdin).

This option is in git since at least v1.0.0, so make use of it.

Signed-off-by: Jakub Narebski <jnareb@gmail.com>
---
This is "amend" patch. It adds --no-commit-id option to git-diff-tree
invocation instead of removing commit IDs (tree-ish IDs to be more exact)
from git-diff-tree output.

Still, I'm not sure why git-diff-tree outputs tree-ish before diff
when called with only one tree-ish. Bugwards compatibility?

 gitweb/gitweb.perl |   4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)

diff --git a/gitweb/gitweb.perl b/gitweb/gitweb.perl
index 8ac60be..345e336 100755
--- a/gitweb/gitweb.perl
+++ b/gitweb/gitweb.perl
@@ -3004,7 +3004,8 @@ sub git_commit {
 	if (!defined $parent) {
 		$parent = "--root";
 	}
-	open my $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts, $parent, $hash
+	open my $fd, "-|", git_cmd(), "diff-tree", '-r', "--no-commit-id",
+		@diff_opts, $parent, $hash
 		or die_error(undef, "Open git-diff-tree failed");
 	my @difftree = map { chomp; $_ } <$fd>;
 	close $fd or die_error(undef, "Reading git-diff-tree failed");
@@ -3321,6 +3322,7 @@ sub git_commitdiff {
 	my @difftree;
 	if ($format eq 'html') {
 		open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
+			"--no-commit-id",
 			"--patch-with-raw", "--full-index", $hash_parent, $hash
 			or die_error(undef, "Open git-diff-tree failed");
 
-- 
1.4.2.1