Add a documentat on how to revert a faulty merge

diff --git a/git-svn.perl b/git-svn.perl
index 914c707a90e5755879574b2717c064fd9364d054..ad01e182df8abbeac7efa3db0d84d55ab1563e40 100755 (executable)
--- a/git-svn.perl
+++ b/git-svn.perl
@@ -558,7 +558,7 @@ sub cmd_branch {
 
        my ($src, $rev, undef, $gs) = working_head_info($head);
 
-       my $remote = Git::SVN::read_all_remotes()->{svn};
+       my $remote = Git::SVN::read_all_remotes()->{$gs->{repo_id}};
        my $glob = $remote->{ $_tag ? 'tags' : 'branches' };
        my ($lft, $rgt) = @{ $glob->{path} }{qw/left right/};
        my $dst = join '/', $remote->{url}, $lft, $branch_name, ($rgt || ());
@@ -2403,12 +2403,20 @@ sub find_parent_branch {
                $gs = Git::SVN->init($u, $p, $repo_id, $ref_id, 1);
        }
        my ($r0, $parent) = $gs->find_rev_before($r, 1);
-       if (!defined $r0 || !defined $parent) {
-               my ($base, $head) = parse_revision_argument(0, $r);
-               if ($base <= $r) {
+       {
+               my ($base, $head);
+               if (!defined $r0 || !defined $parent) {
+                       ($base, $head) = parse_revision_argument(0, $r);
+               } else {
+                       if ($r0 < $r) {
+                               $gs->ra->get_log([$gs->{path}], $r0 + 1, $r, 1,
+                                       0, 1, sub { $base = $_[1] - 1 });
+                       }
+               }
+               if (defined $base && $base <= $r) {
                        $gs->fetch($base, $r);
                }
-               ($r0, $parent) = $gs->last_rev_commit;
+               ($r0, $parent) = $gs->find_rev_before($r, 1);
        }
        if (defined $r0 && defined $parent) {
                print STDERR "Found branch parent: ($self->{ref_id}) $parent\n";
@@ -5007,8 +5015,7 @@ sub minimize_connections {
                }
        }
        if (@emptied) {
-               my $file = $ENV{GIT_CONFIG} || $ENV{GIT_CONFIG_LOCAL} ||
-                          "$ENV{GIT_DIR}/config";
+               my $file = $ENV{GIT_CONFIG} || "$ENV{GIT_DIR}/config";
                print STDERR <<EOF;
 The following [svn-remote] sections in your config file ($file) are empty
 and can be safely removed: