diff -r 0c2f0048125d -r b35e3364f94a mercurial/patch.py
--- a/mercurial/patch.py	Sun Dec 09 23:33:16 2012 +0100
+++ b/mercurial/patch.py	Sun Dec 09 23:33:16 2012 +0100
@@ -1007,7 +1007,7 @@
 
             bot = min(fuzz, bot)
             top = min(fuzz, top)
-            return old[top:len(old)-bot], new[top:len(new)-bot], top
+            return old[top:len(old) - bot], new[top:len(new) - bot], top
         return old, new, 0
 
     def fuzzit(self, fuzz, toponly):