revset: add a `__nonzero__` to baseset
We are about to add a base class for `baseset` with an abstract `__nonzero__`
method. So we need this method to be explicitly defined to avoid issues. The
built-in list object apparently does not have a `__nonzero__` and relies on
`__len__` for this purpose?
--- a/mercurial/revset.py Wed Oct 01 15:50:54 2014 -0500
+++ b/mercurial/revset.py Wed Oct 01 15:03:16 2014 -0500
@@ -2238,6 +2238,9 @@
def __contains__(self):
return self.set().__contains__
+ def __nonzero__(self):
+ return bool(len(self))
+
def __sub__(self, other):
"""Returns a new object with the substraction of the two collections.