# HG changeset patch
# User Pulkit Goyal <pulkit@yandex-team.ru>
# Date 1553711584 -10800
# Node ID f0fa0fc4900ac6c62b39d88dbd65867d0e6a82cb
# Parent  3a7efcbdf288efd790ab0356152394ab441585dd
branchmap: dynamically resolve type of branchcache class

This is required to support subclassing.
Thanks to Yuya for suggesting this in D6151.

Differential Revision: https://phab.mercurial-scm.org/D6204

diff -r 3a7efcbdf288 -r f0fa0fc4900a mercurial/branchmap.py
--- a/mercurial/branchmap.py	Fri Apr 12 09:41:08 2019 -0700
+++ b/mercurial/branchmap.py	Wed Mar 27 21:33:04 2019 +0300
@@ -305,7 +305,7 @@
 
     def copy(self):
         """return an deep copy of the branchcache object"""
-        return branchcache(
+        return type(self)(
             self._entries, self.tipnode, self.tiprev, self.filteredhash,
             self._closednodes)