# HG changeset patch
# User Pierre-Yves David <pierre-yves.david@fb.com>
# Date 2014-09-17 17:58:50
# Node ID 6261b9c549a24a84c00c608d7732fa1d9ea676de
# Parent  5b65429721d5baf51f57d7c681eb3b4e00c7aebf

revset: use `subset &` in `filelog`

This takes advantage of the `fullreposet` smartness.

revset #0: file(COPYING)
0) wall 3.179066 comb 3.180000 user 3.140000 sys 0.040000 (best of 3)
1) wall 2.723699 comb 2.730000 user 2.690000 sys 0.040000 (best of 4)

diff --git a/mercurial/revset.py b/mercurial/revset.py
--- a/mercurial/revset.py
+++ b/mercurial/revset.py
@@ -811,7 +811,7 @@ def filelog(repo, subset, x):
                 for fr in fl:
                     s.add(fl.linkrev(fr))
 
-    return subset.filter(s.__contains__)
+    return subset & s
 
 def first(repo, subset, x):
     """``first(set, [n])``