# HG changeset patch
# User Yuya Nishihara <yuya@tcha.org>
# Date 2018-10-13 08:58:06
# Node ID d99a588d8515ee07a5e2ddb9e715fb8c6cc45b38
# Parent  58d785679e158dcf460df8cffc32b7be4b36ea83

py3: pass in system string to vars(branchmap).__contains__()

diff --git a/mercurial/branchmap.py b/mercurial/branchmap.py
--- a/mercurial/branchmap.py
+++ b/mercurial/branchmap.py
@@ -480,7 +480,7 @@ class revbranchcache(object):
         #   self.branchinfo = self._branchinfo
         #
         # Since we now have data in the cache, we need to drop this bypassing.
-        if 'branchinfo' in vars(self):
+        if r'branchinfo' in vars(self):
             del self.branchinfo
 
     def _setcachedata(self, rev, node, branchidx):