--- a/mercurial/match.py	Fri May 03 14:39:28 2013 -0700
+++ b/mercurial/match.py	Fri May 03 14:41:58 2013 -0700
@@ -119,10 +119,8 @@
         found/accessed, with an error message
         '''
         pass
-    def explicitdir(self, f):
-        pass
-    def traversedir(self, f):
-        pass
+    explicitdir = None
+    traversedir = None
     def missing(self, f):
         pass
     def exact(self, f):