# HG changeset patch
# User Augie Fackler <augie@google.com>
# Date 2017-07-24 15:19:45
# Node ID 5ae35a1347fdf0ceee9417239c0236e8d61e62fe
# Parent  da7c285ec6da1cd2be0485ddb4b83b3c21c79b02

bundle2: look for __next__ as well as next to identify iterators

In Python 3, next is called __next__ and this was failing to catch
some iterators.

diff --git a/mercurial/bundle2.py b/mercurial/bundle2.py
--- a/mercurial/bundle2.py
+++ b/mercurial/bundle2.py
@@ -1070,7 +1070,8 @@ class bundlepart(object):
         Exists to handle the different methods to provide data to a part."""
         # we only support fixed size data now.
         # This will be improved in the future.
-        if util.safehasattr(self.data, 'next'):
+        if (util.safehasattr(self.data, 'next')
+            or util.safehasattr(self.data, '__next__')):
             buff = util.chunkbuffer(self.data)
             chunk = buff.read(preferedchunksize)
             while chunk: