--- a/tests/test-revset.t	Wed Oct 22 15:47:27 2014 -0500
+++ b/tests/test-revset.t	Sun Oct 19 16:48:33 2014 +0900
@@ -437,6 +437,18 @@
   4
   8
   9
+
+Test explicit numeric revision
+  $ log 'rev(-1)'
+  $ log 'rev(0)'
+  0
+  $ log 'rev(9)'
+  9
+  $ log 'rev(10)'
+  $ log 'rev(tip)'
+  hg: parse error: rev expects a number
+  [255]
+
   $ log 'outgoing()'
   8
   9