diff -r 660b0c1b6196 -r 1f46be4689ed mercurial/extensions.py
--- a/mercurial/extensions.py	Fri May 13 11:04:51 2011 -0500
+++ b/mercurial/extensions.py	Fri May 13 12:57:27 2011 -0500
@@ -248,7 +248,7 @@
     except IOError:
         return
     else:
-        doc = moduledoc(file)
+        doc = _moduledoc(file)
         file.close()
 
     if doc: # extracting localized synopsis