--- a/mercurial/cmdutil.py	Tue Jan 03 17:13:03 2012 -0600
+++ b/mercurial/cmdutil.py	Wed Jan 04 15:48:02 2012 -0600
@@ -1201,7 +1201,7 @@
 def duplicatecopies(repo, rev, p1, p2):
     "Reproduce copies found in the source revision in the dirstate for grafts"
     # Here we simulate the copies and renames in the source changeset
-    cop, diver = copies.copies(repo, repo[rev], repo[p1], repo[p2], True)
+    cop, diver = copies.mergecopies(repo, repo[rev], repo[p1], repo[p2])
     m1 = repo[rev].manifest()
     m2 = repo[p1].manifest()
     for k, v in cop.iteritems():

--- a/mercurial/commands.py	Tue Jan 03 17:13:03 2012 -0600
+++ b/mercurial/commands.py	Wed Jan 04 15:48:02 2012 -0600
@@ -5206,14 +5206,13 @@
     changestates = zip(states, 'MAR!?IC', stat)
 
     if (opts.get('all') or opts.get('copies')) and not opts.get('no_status'):
-        ctxn = repo[nullid]
         ctx1 = repo[node1]
         ctx2 = repo[node2]
         added = stat[1]
         if node2 is None:
             added = stat[0] + stat[1] # merged?
 
-        for k, v in copies.copies(repo, ctx1, ctx2, ctxn)[0].iteritems():
+        for k, v in copies.pathcopies(ctx1, ctx2).iteritems():
             if k in added:
                 copy[k] = v
             elif v in added:

--- a/mercurial/copies.py	Tue Jan 03 17:13:03 2012 -0600
+++ b/mercurial/copies.py	Wed Jan 04 15:48:02 2012 -0600
@@ -84,7 +84,10 @@
         return None
     return limit
 
-def copies(repo, c1, c2, ca, checkdirs=False):
+def pathcopies(c1, c2):
+    return mergecopies(c1._repo, c1, c2, c1._repo["null"], False)[0]
+
+def mergecopies(repo, c1, c2, ca, checkdirs=True):
     """
     Find moves and copies between context c1 and c2
     """

--- a/mercurial/merge.py	Tue Jan 03 17:13:03 2012 -0600
+++ b/mercurial/merge.py	Wed Jan 04 15:48:02 2012 -0600
@@ -183,7 +183,7 @@
         pa = p1.p1()
     elif pa and repo.ui.configbool("merge", "followcopies", True):
         dirs = repo.ui.configbool("merge", "followdirs", True)
-        copy, diverge = copies.copies(repo, p1, p2, pa, dirs)
+        copy, diverge = copies.mergecopies(repo, p1, p2, pa, dirs)
         for of, fl in diverge.iteritems():
             act("divergent renames", "dr", of, fl)
 

--- a/mercurial/patch.py	Tue Jan 03 17:13:03 2012 -0600
+++ b/mercurial/patch.py	Wed Jan 04 15:48:02 2012 -0600
@@ -1600,7 +1600,7 @@
 
     copy = {}
     if opts.git or opts.upgrade:
-        copy = copies.copies(repo, ctx1, ctx2, repo[nullid])[0]
+        copy = copies.pathcopies(ctx1, ctx2)
 
     difffn = lambda opts, losedata: trydiff(repo, revs, ctx1, ctx2,
                  modified, added, removed, copy, getfilectx, opts, losedata, prefix)