# HG changeset patch
# User Pierre-Yves David <pierre-yves.david@fb.com>
# Date 2014-09-17 17:58:39
# Node ID 5b65429721d5baf51f57d7c681eb3b4e00c7aebf
# Parent  0cf46b8298feff1531b788bfbcdc323372cd604d

revset: use `subset &` in `divergent`

This takes advantage of the `fullreposet` smartness.

revset #0: divergent()
0) wall 0.002047 comb 0.000000 user 0.000000 sys 0.000000 (best of 813)
1) wall 0.000052 comb 0.000000 user 0.000000 sys 0.000000 (best of 22757)

diff --git a/mercurial/revset.py b/mercurial/revset.py
--- a/mercurial/revset.py
+++ b/mercurial/revset.py
@@ -734,7 +734,7 @@ def divergent(repo, subset, x):
     # i18n: "divergent" is a keyword
     getargs(x, 0, 0, _("divergent takes no arguments"))
     divergent = obsmod.getrevs(repo, 'divergent')
-    return subset.filter(divergent.__contains__)
+    return subset & divergent
 
 def draft(repo, subset, x):
     """``draft()``