view mercurial/templates/__init__.py @ 51527:fa9e3976a5a0

branchcache: rework the `filteredhash` logic to be more generic

We now have a more flexible `key_hashes` tuple. We duplicated various logic in
the V2 and V3 version of the cache as the goal is to start changing the logic
for V3 in the next few changesets.