--- a/mercurial/subrepo.py	Tue Oct 26 14:41:58 2010 +0300
+++ b/mercurial/subrepo.py	Wed Oct 27 00:28:40 2010 +0200
@@ -187,6 +187,8 @@
             else: # plain file system path
                 return posixpath.normpath(os.path.join(parent, repo._subsource))
     else: # recursion reached top repo
+        if hasattr(repo, '_subtoppath'):
+            return repo._subtoppath
         if push and repo.ui.config('paths', 'default-push'):
             return repo.ui.config('paths', 'default-push')
         if repo.ui.config('paths', 'default'):