--- a/mercurial/copies.py	Fri Jun 27 14:53:30 2008 -0500
+++ b/mercurial/copies.py	Fri Jun 27 18:28:45 2008 -0500
@@ -11,9 +11,7 @@
 
 def _nonoverlap(d1, d2, d3):
     "Return list of elements in d1 not in d2 or d3"
-    l = [d for d in d1 if d not in d3 and d not in d2]
-    l.sort()
-    return l
+    return util.sort([d for d in d1 if d not in d3 and d not in d2])
 
 def _dirname(f):
     s = f.rfind("/")
@@ -49,9 +47,7 @@
         visit += [(p, depth - 1) for p in fc.parents()]
 
     # return old names sorted by depth
-    old = old.values()
-    old.sort()
-    return [o[1] for o in old]
+    return [o[1] for o in util.sort(old.values())]
 
 def _findlimit(repo, a, b):
     "find the earliest revision that's an ancestor of a or b but not both"