# HG changeset patch
# User Pierre-Yves David <pierre-yves.david@fb.com>
# Date 2015-09-24 07:59:26
# Node ID cce8ebd3140773c0a95fedb4b3835be55385dbc3
# Parent  4a8e21578e1426757ff5bc71ac383d840e6251de

match: remove a mutable default argument

Mutable default arguments are know to the state of California to cause bugs.

diff --git a/mercurial/scmutil.py b/mercurial/scmutil.py
--- a/mercurial/scmutil.py
+++ b/mercurial/scmutil.py
@@ -753,7 +753,7 @@ def expandpats(pats):
         ret.append(kindpat)
     return ret
 
-def matchandpats(ctx, pats=[], opts={}, globbed=False, default='relpath',
+def matchandpats(ctx, pats=(), opts={}, globbed=False, default='relpath',
                  badfn=None):
     '''Return a matcher and the patterns that were used.
     The matcher will warn about bad matches, unless an alternate badfn callback