# HG changeset patch
# User Brendan Cully <brendan@kublai.com>
# Date 1159579049 25200
# Node ID 1749987b29e39be405f8259a301febe5ed87cd45
# Parent  367a009c2acb29b8f110a1f658418d9336063280
Templater expects an iterable copies variable (fixes notify).

diff --git a/mercurial/templater.py b/mercurial/templater.py
--- a/mercurial/templater.py
+++ b/mercurial/templater.py
@@ -356,7 +356,7 @@ class changeset_templater(object):
         self.write(thing, header=True)
 
     def show(self, rev=0, changenode=None, brinfo=None, changes=None,
-             copies=None, **props):
+             copies=[], **props):
         '''show a single changeset or file revision'''
         log = self.repo.changelog
         if changenode is None: