diff -r 42b1344656f7 -r 3efe3c2609e0 mercurial/revset.py
--- a/mercurial/revset.py	Mon Aug 11 13:10:00 2014 -0500
+++ b/mercurial/revset.py	Mon Aug 11 23:45:08 2014 -0400
@@ -449,7 +449,7 @@
                        _('the argument to bookmark must be a string'))
         kind, pattern, matcher = _stringmatcher(bm)
         if kind == 'literal':
-            bmrev = repo._bookmarks.get(bm, None)
+            bmrev = repo._bookmarks.get(pattern, None)
             if not bmrev:
                 raise util.Abort(_("bookmark '%s' does not exist") % bm)
             bmrev = repo[bmrev].rev()