--- a/mercurial/ui.py	Tue Jun 08 11:58:09 2010 -0500
+++ b/mercurial/ui.py	Tue Jun 08 21:09:41 2010 +0200
@@ -228,7 +228,7 @@
         if result is None:
             result = default or []
         if isinstance(result, basestring):
-            result = _configlist(result)
+            result = _configlist(result.lstrip(' ,\n'))
             if result is None:
                 result = default or []
         return result