From: Eric Wong <normalperson@yhbt.net>
Date: Sat, 8 Sep 2007 23:33:08 +0000 (-0700)
Subject: git-svn: understand grafts when doing dcommit
X-Git-Tag: v1.5.3.2~35
X-Git-Url: https://git.tokkee.org/?a=commitdiff_plain;h=7b02b85a66fee6b357e02f9e70dd0baa0fd24308;p=git.git

git-svn: understand grafts when doing dcommit

Use the rev-list --parents functionality to read the parents
of the commit.  cat-file only shows the raw object with the
original parents and doesn't take into account grafts; so
we'll rely on rev-list machinery for the smarts here.

Signed-off-by: Eric Wong <normalperson@yhbt.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
---

diff --git a/git-svn.perl b/git-svn.perl
index fbd4691bc..f8181609f 100755
--- a/git-svn.perl
+++ b/git-svn.perl
@@ -841,14 +841,9 @@ sub working_head_info {
 
 sub read_commit_parents {
 	my ($parents, $c) = @_;
-	my ($fh, $ctx) = command_output_pipe(qw/cat-file commit/, $c);
-	while (<$fh>) {
-		chomp;
-		last if '';
-		/^parent ($sha1)/ or next;
-		push @{$parents->{$c}}, $1;
-	}
-	close $fh; # break the pipe
+	chomp(my $p = command_oneline(qw/rev-list --parents -1/, $c));
+	$p =~ s/^($c)\s*// or die "rev-list --parents -1 $c failed!\n";
+	@{$parents->{$c}} = split(/ /, $p);
 }
 
 sub linearize_history {