mercurial/revset.py

--- a/mercurial/revset.py	Wed Oct 08 02:51:54 2014 -0700
+++ b/mercurial/revset.py	Wed Oct 08 02:52:10 2014 -0700
@@ -1675,7 +1675,7 @@
         return baseset()
     cl = repo.changelog
     ls = [cl.rev(node.bin(r)) for r in s.split('\0')]
-    s = subset.set()
+    s = subset
     return baseset([r for r in ls if r in s])
 
 symbols = {