# HG changeset patch
# User Gregory Szorc <gregory.szorc@gmail.com>
# Date 1456643165 28800
# Node ID 4ef967661751d3c1e56d9fa75e76a116af465b66
# Parent  dc6032a1d888816365bacba24c6ae3f51543630e
changegroup: use changelog.readfiles

We have a dedicated function to get just the list of files in
a changelog entry. Use it.

This will presumably speed up changegroup application since we're
no longer decoding the entire changelog entry. But I didn't measure
the impact.

diff -r dc6032a1d888 -r 4ef967661751 mercurial/changegroup.py
--- a/mercurial/changegroup.py	Sat Feb 27 18:02:12 2016 +0100
+++ b/mercurial/changegroup.py	Sat Feb 27 23:06:05 2016 -0800
@@ -363,7 +363,7 @@
 
                 efiles = set()
                 def onchangelog(cl, node):
-                    efiles.update(cl.read(node)[3])
+                    efiles.update(cl.readfiles(node))
 
                 self.changelogheader()
                 srccontent = cl.addgroup(self, csmap, trp,