diff mercurial/ancestor.py @ 31476:413b44003462

py3: add __bool__ to every class defining __nonzero__

__nonzero__ was renamed to __bool__ in Python 3. This patch simply
aliases __bool__ to __nonzero__ for every class implementing
__nonzero__.

--- a/mercurial/ancestor.py	Mon Mar 13 21:58:43 2017 -0700
+++ b/mercurial/ancestor.py	Mon Mar 13 12:40:14 2017 -0700
@@ -296,6 +296,8 @@
         except StopIteration:
             return False
 
+    __bool__ = __nonzero__
+
     def __iter__(self):
         """Generate the ancestors of _initrevs in reverse topological order.