diff -r 35ba170c0f82 -r 407209261f63 mercurial/commands.py
--- a/mercurial/commands.py	Mon Nov 12 19:27:03 2012 +0200
+++ b/mercurial/commands.py	Thu Nov 15 11:27:30 2012 -0600
@@ -2935,7 +2935,7 @@
     def matchlines(body):
         begin = 0
         linenum = 0
-        while True and begin < len(body):
+        while begin < len(body):
             match = regexp.search(body, begin)
             if not match:
                 break