diff -r b89f7e3a414d -r 7b123e5639f4 mercurial/revset.py
--- a/mercurial/revset.py	Thu Oct 02 18:02:17 2014 -0500
+++ b/mercurial/revset.py	Thu Oct 02 17:53:55 2014 -0500
@@ -2895,10 +2895,8 @@
         return iter(iterrange)
 
     def __contains__(self, rev):
-        start = self._start
-        end = self._end
         hidden = self._hiddenrevs
-        return (((end < rev <= start) or (start <= rev and rev < end))
+        return ((self._start <= rev < self._end)
                 and not (hidden and rev in hidden))
 
     def __nonzero__(self):