[PATCH] git-svn: un-break "git svn rebase" when log.abbrevCommit=true

["Ævar Arnfjörð Bjarmason" <avarab@gmail.com>]

Change git-svn to parse --no-abbrev-commit --no-decorate to git-log
since it's trying to parse the log output, and the parsing will fail
completely if log.abbrevCommit is set to true in the configuration,
also set --no-decorate so we won't fail if we're processing a commit
that has a tag pointing to it.

Without this patch the code will fail to parse a SHA1, and then just
spew a bunch of "Use of uninitialized value $hash in string eq"
warnings at "if ($c && $c eq $hash) { ..." and never do anything
useful.

A real fix would be to make git-svn not use any porcelain utilities,
but just work around it for now.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
---
 git-svn.perl |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/git-svn.perl b/git-svn.perl
index eeb83d3..570fe9c 100755
--- a/git-svn.perl
+++ b/git-svn.perl
@@ -1879,7 +1879,8 @@ sub cmt_sha2rev_batch {
 sub working_head_info {
 	my ($head, $refs) = @_;
 	my @args = qw/log --no-color --no-decorate --first-parent
-	              --pretty=medium/;
+	              --pretty=medium --no-abbrev-commit --no-decorate/;
+
 	my ($fh, $ctx) = command_output_pipe(@args, $head);
 	my $hash;
 	my %max;
-- 
1.7.8.3