Re: generation numbers

Jeff King [off-list ref] writes:

You could "cheat" and instead of storing the sha1 of a blob object in
the notes tree, use the lower 32 bits to store an actual value. I don't
think that currently breaks any assumptions in the notes code, but it
definitely is against the intent of it.

I highly suspect that it would break fsck rather badly.  You may not even
be able to repack a repository with such a notes tree.

For a local lookup cache, I would use a fixed-size binary integer just
to keep the lookup data structure simple (then you know the width of
each record ahead of time). For a generation commit header, obviously we
would go with the ascii representation as we do for other headers.

Yes.