--- a/mercurial/pure/parsers.py	Wed Aug 15 22:38:42 2012 +0200
+++ b/mercurial/pure/parsers.py	Wed Aug 15 22:39:18 2012 +0200
@@ -70,7 +70,7 @@
 
 def parse_dirstate(dmap, copymap, st):
     parents = [st[:20], st[20: 40]]
-    # deref fields so they will be local in loop
+    # dereference fields so they will be local in loop
     format = ">cllll"
     e_size = struct.calcsize(format)
     pos1 = 40