diff -r 0cb996ee8c6d -r 9de689d20230 doc/hgmanpage.py
--- a/doc/hgmanpage.py	Mon Jul 01 20:48:55 2013 +0200
+++ b/doc/hgmanpage.py	Mon Jul 01 20:48:56 2013 +0200
@@ -981,7 +981,6 @@
         #    Level is too low to display:
         #    raise nodes.SkipNode
         attr = {}
-        backref_text = ''
         if node.hasattr('id'):
             attr['name'] = node['id']
         if node.hasattr('line'):