> Oops, my oversight - what's passed to cmp is not the same that's compared to None in that if :) I have even less confidence on this now. And `workingfilectx.cmp(self, fctx)` flips `self` and `fctx` as it knows `self._filenode` is None, and the other's wouldn't be None. I don't like it, but that's how fctx.cmp() is working.