py3: return False early while checking whether None is a key in lazymanifest
In this patch we returns False early if we are trying to check whether None is a
key in lazymanifest. The reason I added a diff is that on Python 3, it goes into
the lazy manifest code an returns a TypeError. I checked with Durham that
whether None can be a possible key in lazymanifest and he said "no". So it's
safe to have this if statement.
This fixes `hg merge` on Python 3.
Differential Revision: https://phab.mercurial-scm.org/D852
--- a/mercurial/manifest.py Fri Sep 29 14:49:05 2017 -0700
+++ b/mercurial/manifest.py Sat Sep 30 05:22:22 2017 +0530
@@ -442,6 +442,8 @@
self._lm[key] = node, self.flags(key, '')
def __contains__(self, key):
+ if key is None:
+ return False
return key in self._lm
def __delitem__(self, key):