--- a/mercurial/localrepo.py	Sun Jul 20 19:08:59 2008 +0200
+++ b/mercurial/localrepo.py	Fri Jul 18 12:31:40 2008 +0200
@@ -953,7 +953,7 @@
 
         def mfmatches(ctx):
             mf = ctx.manifest().copy()
-            for fn in mf:
+            for fn in mf.keys():
                 if not match(fn):
                     del mf[fn]
             return mf