# HG changeset patch
# User Shun-ichi Goto <shunichi.goto@gmail.com>
# Date 1142704285 28800
# Node ID 6e1a8ea5d7172c7b3105784027f6d3cfafedab40
# Parent  0d54675cd56669794bdc519de3e71839f56bddf1
Duplicate cache when creating templater.


diff --git a/mercurial/templater.py b/mercurial/templater.py
--- a/mercurial/templater.py
+++ b/mercurial/templater.py
@@ -65,7 +65,7 @@ class templater(object):
         filters is dict of functions. each transforms a value into another.
         defaults is dict of default map definitions.'''
         self.mapfile = mapfile or 'template'
-        self.cache = cache
+        self.cache = cache.copy()
         self.map = {}
         self.base = (mapfile and os.path.dirname(mapfile)) or ''
         self.filters = filters