--- a/mercurial/util.py Thu Jun 23 18:18:33 2016 +0100
+++ b/mercurial/util.py Thu Jun 23 18:20:58 2016 +0100
@@ -1483,6 +1483,7 @@
self._checkambig = checkambig
# delegated methods
+ self.read = self._fp.read
self.write = self._fp.write
self.seek = self._fp.seek
self.tell = self._fp.tell