mercurial/extensions.py

--- a/mercurial/extensions.py	Thu Aug 09 01:04:27 2007 +0200
+++ b/mercurial/extensions.py	Wed Aug 08 18:04:06 2007 -0700
@@ -24,6 +24,7 @@
 def load(ui, name, path):
     if name in _extensions:
         return
+    _extensions[shortname] = None
     if path:
         # the module will be loaded in sys.modules
         # choose an unique name so that it doesn't