mercurial/unionrepo.py

--- a/mercurial/unionrepo.py	Fri Feb 06 01:44:24 2015 +0000
+++ b/mercurial/unionrepo.py	Fri Jan 23 17:01:39 2015 -0500
@@ -160,6 +160,12 @@
     def baserevdiff(self, rev1, rev2):
         return filelog.filelog.revdiff(self, rev1, rev2)
 
+    def iscensored(self, rev):
+        """Check if a revision is censored."""
+        if rev <= self.repotiprev:
+            return filelog.filelog.iscensored(self, rev)
+        return self.revlog2.iscensored(rev)
+
 class unionpeer(localrepo.localpeer):
     def canpush(self):
         return False