# HG changeset patch
# User Lucas Moscovicz <lmoscovicz@fb.com>
# Date 2014-03-13 18:36:11
# Node ID d4f2f2d7421049d5f3ea39c8f47a3eec3e04ffdd
# Parent  c3e49b127de05e1f48ba464e40a3f82cb4d7541b

revset: changed spanset to extend _orderedsetmixin

Now spanset can use the lazy min and max methods implementation.

diff --git a/mercurial/revset.py b/mercurial/revset.py
--- a/mercurial/revset.py
+++ b/mercurial/revset.py
@@ -2692,7 +2692,7 @@ class _descgeneratorset(_generatorset):
         self._cache[x] = False
         return False
 
-class spanset(object):
+class spanset(_orderedsetmixin):
     """Duck type for baseset class which represents a range of revisions and
     can work lazily and without having all the range in memory