diff -r f4930b533d55 -r bd19587a3347 tests/test-revert.t
--- a/tests/test-revert.t	Fri May 03 09:44:50 2013 -0700
+++ b/tests/test-revert.t	Fri May 03 12:40:17 2013 -0700
@@ -275,4 +275,28 @@
   $ hg revert --no-backup ignored removed
   $ hg st -mardi
 
+someone set up us the copies
+
+  $ rm .hgignore
+  $ hg update -C
+  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
+  $ hg mv ignored allyour
+  $ hg copy removed base
+  $ hg commit -m rename
+
+copies and renames, you have no chance to survive make your time (issue3920)
+
+  $ hg update '.^'
+  1 files updated, 0 files merged, 2 files removed, 0 files unresolved
+  $ hg revert -rtip -a
+  adding allyour
+  adding base
+  removing ignored
+  $ hg status -C
+  A allyour
+    ignored
+  A base
+    removed
+  R ignored
+
   $ cd ..