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[bug#49252] [PATCH] Channels defaulting to HEAD instead of ‘master’
From: |
Kyle Meyer |
Subject: |
[bug#49252] [PATCH] Channels defaulting to HEAD instead of ‘master’ |
Date: |
Tue, 10 Aug 2021 20:34:58 -0400 |
Ludovic Courtès writes:
> Right. We can add the missing procedures in Guile-Git, but in the
> meantime, maybe we could create .git/refs/origin/HEAD “by hand”?
Yep, for the default branch $NAME, "ref: refs/remotes/origin/$NAME\n"
can be written to .git/refs/origin/HEAD.
With respect to getting the default branch, I said in my last message
that I thought it'd be possible to glean the target from the remote-ls
output. To flesh that out a bit:
--8<---------------cut here---------------start------------->8---
(use-modules
(git)
(system foreign))
(define origin (remote-lookup (repository-open ".") "origin"))
(remote-connect origin)
(define head (car (remote-ls origin)))
(define target-pt
(make-pointer
((record-accessor (record-type-descriptor head) 'symref-target)
head)))
(if (not (null-pointer? target-pt))
(display (pointer->string target-pt))) ;; => refs/heads/master
--8<---------------cut here---------------end--------------->8---
And that looks like it matches what libgit2's
git_remote_default_branch() does for the non-guessing case (see below),
so stopping there may be sufficient for a compatibility kludge.
--8<---------------cut here---------------start------------->8---
if ((error = git_remote_ls(&heads, &heads_len, remote)) < 0)
goto done;
if (heads_len == 0 || strcmp(heads[0]->name, GIT_HEAD_FILE)) {
error = GIT_ENOTFOUND;
goto done;
}
if ((error = git_buf_sanitize(out)) < 0)
return error;
/* the first one must be HEAD so if that has the symref info, we're
done */
if (heads[0]->symref_target) {
error = git_buf_puts(out, heads[0]->symref_target);
goto done;
}
/*
* If there's no symref information, we have to look over them
* and guess. We return the first match unless the default
* branch is a candidate. Then we return the default branch.
*/--8<---------------cut here---------------end--------------->8---