git-svn: dcommit should diff against the current HEAD after committing

This is a followup to dd31da2fdc199132c9fd42023aea5b33672d73cc.
Regardless of whether we commit an alternate head, we always
diff-tree based on the current HEAD, and rebase against our
remote reference as necessary.

Signed-off-by: Eric Wong <normalperson@yhbt.net>
Signed-off-by: Junio C Hamano <junkio@cox.net>

diff --git a/git-svn.perl b/git-svn.perl
index 4288a05..c2cdceb 100755 (executable)
--- a/git-svn.perl
+++ b/git-svn.perl
@@ -512,15 +512,15 @@ sub dcommit {
        }
        return if $_dry_run;
        fetch();
-       my @diff = command('diff-tree', $head, $gs, '--');
+       my @diff = command('diff-tree', 'HEAD', $gs, '--');
        my @finish;
        if (@diff) {
                @finish = qw/rebase/;
                push @finish, qw/--merge/ if $_merge;
                push @finish, "--strategy=$_strategy" if $_strategy;
-               print STDERR "W: $head and $gs differ, using @finish:\n", @diff;
+               print STDERR "W: HEAD and $gs differ, using @finish:\n", @diff;
        } else {
-               print "No changes between current $head and $gs\n",
+               print "No changes between current HEAD and $gs\n",
                      "Resetting to the latest $gs\n";
                @finish = qw/reset --mixed/;
        }