--- a/mercurial/revlog.py Mon Aug 22 20:30:37 2016 -0700 +++ b/mercurial/revlog.py Mon Aug 22 20:17:36 2016 -0700 @@ -1446,7 +1446,6 @@ curr = len(self) prev = curr - 1 - base = chainbase = curr offset = self.end(prev) delta = None if self._basecache is None: