--- a/tests/test-bookmarks.t Wed May 02 14:37:44 2012 -0700
+++ b/tests/test-bookmarks.t Thu May 03 16:03:08 2012 -0500
@@ -371,3 +371,8 @@
* Z 3:125c9a1d6df6
x y 2:db815d6d32e6
+test missing revisions
+
+ $ echo "925d80f479bc z" > .hg/bookmarks
+ $ hg book
+ no bookmarks set