--- a/mercurial/revset.py	Thu Apr 14 10:00:15 2011 +0200
+++ b/mercurial/revset.py	Fri Apr 15 20:07:44 2011 +0300
@@ -123,7 +123,7 @@
     x = repo[x].rev()
     if x == -1 and len(subset) == len(repo):
         return [-1]
-    if x in subset:
+    if len(subset) == len(repo) or x in subset:
         return [x]
     return []