--- a/tests/test-touch.t	Fri Feb 08 22:09:42 2013 +0000
+++ b/tests/test-touch.t	Fri Feb 08 22:12:46 2013 +0000
@@ -48,3 +48,12 @@
   
   $ hg prune 3
   1 changesets pruned
+
+Duplicate
+
+  $ hg touch --duplicate .
+  $ hg log -G
+  @  5:[0-9a-f]{12} a (re)
+  
+  o  4:[0-9a-f]{12} a (re)
+