view .hg-format-source @ 5862:5056fb0c919e stable

evolve: use nullrev for an empty cache key

Pairing nullid with nullrev (-1) seems more logical than pairing it with 0.

This also means we don't false-detect strips out of nowhere. That used to
happen because newkey (-1, nullid) != self._cachekey (0, nullid).

{"pattern": "glob:hgext3rd/**/*.py", "tool": "byteify-strings"}