On Wed, Mar 12, 2014 at 3:36 AM, Jeff King <p...@peff.net> wrote:
> If the client is limited to setting a few flags, then something like
> http can get away with:
>   GET 
> foo.git/info/refs?service=git-upload-pack&advertise-symrefs&refspec=refs/heads/*
> And it does not need to worry about upload-pack2 at all. Either the
> server recognizes and acts on them, or it ignores them.
> But given that we do not have such a magic out-of-band method for
> passing values over ssh and git, maybe it is not worth worrying about.

git could go the same if we lift the restriction in 73bb33a (daemon:
Strictly parse the "extra arg" part of the command - 2009-06-04). It's
been five years. Old daemons hopefully have all died out by now. For
ssh, I suppose upload-pack and receive-pack can take an extra argument
like "advertise-symrefs&refspec=refs/heads/*" (daemon would use it too
to pass the advertiment to upload-pack and receive-pack).

That would make all three not need to change the underlying protocol
for capability advertisement. Old git-daemon, upload-pack and
receive-pack will fail hard on the new advertisement though, unlike
http. But that's no worse than upload-pack2.

> Http can move to upload-pack2 along with the rest.

Or maybe http may lead the rest to another way.
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