templater: remove a mutable default argument
Mutable default arguments are know to the state of California to cause bugs.
--- a/mercurial/templater.py Thu Sep 24 01:05:21 2015 -0700
+++ b/mercurial/templater.py Thu Sep 24 01:06:10 2015 -0700
@@ -833,12 +833,14 @@
class templater(object):
- def __init__(self, mapfile, filters={}, defaults={}, cache={},
+ def __init__(self, mapfile, filters=None, defaults={}, cache={},
minchunk=1024, maxchunk=65536):
'''set up template engine.
mapfile is name of file to read map definitions from.
filters is dict of functions. each transforms a value into another.
defaults is dict of default map definitions.'''
+ if filters is None:
+ filters = {}
self.mapfile = mapfile or 'template'
self.cache = cache.copy()
self.map = {}