# HG changeset patch
# User Alecs King <alecsk@gmail.com>
# Date 2010-08-11 12:28:39
# Node ID 5094e6b2f64099cfcd602d783140828e78ff4cf6
# Parent  df52ff0980fee8803fe57cbcafd1031764b733f7

ui: differentiate empty configlist from None

diff --git a/mercurial/ui.py b/mercurial/ui.py
--- a/mercurial/ui.py
+++ b/mercurial/ui.py
@@ -218,7 +218,7 @@ class ui(object):
         def _configlist(s):
             s = s.rstrip(' ,')
             if not s:
-                return None
+                return []
             parser, parts, offset = _parse_plain, [''], 0
             while parser:
                 parser, parts, offset = parser(parts, s, offset)