--- a/tests/test-update-branches.t	Wed Oct 14 15:11:53 2015 -0400
+++ b/tests/test-update-branches.t	Thu Oct 15 01:35:44 2015 +0100
@@ -260,3 +260,8 @@
   $ hg debugobsolete bd10386d478cd5a9faf2e604114c8e6da62d3889
   $ hg up
   0 files updated, 0 files merged, 0 files removed, 0 files unresolved
+
+Test experimental revset support
+
+  $ hg log -r '_destupdate()'
+  2:bd10386d478c 2 (no-eol)