Cut-and-paste dup noticed by Junio. It's not even harmless, since a
match also causes that match to be invalidated, so this made it
impossible to update an existing branch by name.
I'd only tested the case of "ref doesn't exist at all on the other end",
which worked fine.
The protocol always supported it, but send-pack didn't actually know how
to tell the other side about a new branch/tag.
NOTE! You'll have to name it explicitly on the command line: if you
don't name any branches, git-send-pack will default to the branches that
already exist.
"git_path()" returns a static pathname pointer into the git directory
using a printf-like format specifier.
"head_ref()" works like "for_each_ref()", except for just the HEAD.
This makes the receiver always send a full list of valid refs, which
will allow us to do better packs, as well as handle creation of new
refs. Eventually. Right now we just moved the matching and enabled it.
So now you can do
git-send-pack host:path branch1 branch2
to only send branches "branch1" and "branch2".
This concludes this lesson. I've actually successfully sent an update
using the git-send-pack command.
Probably tons of work still to do, and nasty debugging, but it's now
actually potentially useful.
