--- a/mercurial/smartset.py Wed Jan 17 21:46:09 2018 -0500
+++ b/mercurial/smartset.py Wed Jan 17 21:46:29 2018 -0500
@@ -306,7 +306,7 @@
self._istopo = False
def __len__(self):
- if '_list' in self.__dict__:
+ if r'_list' in self.__dict__:
return len(self._list)
else:
return len(self._set)