git-svn: read the dcommit url from the config file on a per remote basis

The commit url for dcommit is determined in the following order:
commandline option --commit-url
svn.commiturl
svn-remote.<name>.commiturl
svn-remote.<name>.url

Signed-off-by: Peter Oberndorfer <kumbayo84@arcor.de>
Acked-by: Eric Wong <normalperson@yhbt.net>

Documentation/git-svn.txt

@@ -169,6 +169,10 @@ and have no uncommitted changes.
 	reused if a user is later given access to an alternate transport
 	method (e.g. `svn+ssh://` or `https://`) for commit.
 
+config key: svn-remote.<name>.commiturl
+
+config key: svn.commiturl (overwrites all svn-remote.<name>.commiturl options)
+
 	Using this option for any other purpose (don't ask)
 	is very strongly discouraged.
 --

git-svn.perl

@@ -438,7 +438,17 @@ sub cmd_dcommit {
 		die "Unable to determine upstream SVN information from ",
 		    "$head history.\nPerhaps the repository is empty.";
 	}
-	$url = defined $_commit_url ? $_commit_url : $gs->full_url;
+
+	if (defined $_commit_url) {
+		$url = $_commit_url;
+	} else {
+		$url = eval { command_oneline('config', '--get',
+			      "svn-remote.$gs->{repo_id}.commiturl") };
+		if (!$url) {
+			$url = $gs->full_url
+		}
+	}
+
 	my $last_rev = $_revision if defined $_revision;
 	if ($url) {
 		print "Committing to $url ...\n";