# HG changeset patch
# User Augie Fackler <raf@durin42.com>
# Date 1495994534 14400
# Node ID 9f56d462634cdee54abb93783505325600d3a60d
# Parent  47ce079b1afa026b36478c98166608f5070cf354
cmdutil: use sorted(dict) instead of x = dict.keys(); x.sort()

The former both does less work and has the virtue of working on Python 3.

diff --git a/mercurial/cmdutil.py b/mercurial/cmdutil.py
--- a/mercurial/cmdutil.py
+++ b/mercurial/cmdutil.py
@@ -449,8 +449,7 @@
         return choice[cmd]
 
     if len(choice) > 1:
-        clist = choice.keys()
-        clist.sort()
+        clist = sorted(choice)
         raise error.AmbiguousCommand(cmd, clist)
 
     if choice: