--- a/mercurial/cmdutil.py Thu May 16 16:20:10 2013 -0500
+++ b/mercurial/cmdutil.py Tue May 14 11:23:15 2013 -0700
@@ -2082,3 +2082,6 @@
return decorator
return cmd
+
+# a list of (ui, repo) functions called by commands.summary
+summaryhooks = util.hooks()