# HG changeset patch
# User Laurent Charignon <lcharignon@fb.com>
# Date 1452182377 28800
# Node ID 4f8b1f202c902606837513071e78125fc7a5eba1
# Parent  388511fe46be95f37cc209812c09d9f661aaeb8e
compat: fix use of repo.parents() to repo[None].parents()

While using hgsubversion with the latest tip of core mercurial I saw this
warning:
(compatibility will be dropped after Mercurial-3.7, update your code.) at:
/usr/lib/python2.6/site-packages/hgsubversion/wrappers.py:219 (push)
searching for changes
This patch fixes the issue and replaced the use of repo.parents() by
repo[None].parents().

diff --git a/hgsubversion/wrappers.py b/hgsubversion/wrappers.py
--- a/hgsubversion/wrappers.py
+++ b/hgsubversion/wrappers.py
@@ -215,7 +215,7 @@ def push(repo, dest, force, revs):
         if len(repo.parents()) != 1:
             ui.status('Cowardly refusing to push branch merge\n')
             return 0 # results in nonzero exit status, see hg's commands.py
-        workingrev = repo.parents()[0]
+        workingrev = repo[None].parents()[0]
         workingbranch = workingrev.branch()
         ui.status('searching for changes\n')
         hashes = meta.revmap.hashes()