manifest: disallow setting the node id of an entry to None
manifest.diff() uses None as a special value to denote the absence of
a file, so setting a file node to None means you then can't trust
manifest.diff().
This should also make future manifest work slightly easier.
--- a/mercurial/manifest.py Fri Dec 12 15:29:54 2014 -0500
+++ b/mercurial/manifest.py Fri Dec 12 13:40:44 2014 -0500
@@ -17,6 +17,9 @@
flags = {}
dict.__init__(self, mapping)
self._flags = flags
+ def __setitem__(self, k, v):
+ assert v is not None
+ dict.__setitem__(self, k, v)
def flags(self, f):
return self._flags.get(f, "")
def withflags(self):