_addset: add a __len__ method
Back in the time where repo.revs(...) returned a list, calling `len(...)` on the
result was quite common. We reinstall this on _addset.
There is absolutely no easy way to test this from the command line. The commands
using this in the evolve extension will eventually land into core.
--- a/mercurial/revset.py Wed Mar 19 17:53:45 2014 -0700
+++ b/mercurial/revset.py Thu Mar 20 18:55:28 2014 -0700
@@ -2464,6 +2464,9 @@
self._ascending = ascending
self._genlist = None
+ def __len__(self):
+ return len(self._list)
+
@util.propertycache
def _list(self):
if not self._genlist: