Ronnie Sahlberg wrote:
[...]
> +++ b/builtin/commit.c
> @@ -1541,11 +1541,12 @@ int cmd_commit(int argc, const char **argv, const
> char *prefix)
[...]
> @@ -1667,16 +1668,6 @@ int cmd_commit(int argc, const char **argv, const char
> *prefix)
> strbuf_release(&author_ident);
> free_commit_extra_headers(extra);
>
> - ref_lock = lock_any_ref_for_update("HEAD",
> - !current_head
> - ? NULL
> - : current_head->object.sha1,
> - 0, NULL);
> - if (!ref_lock) {
> - rollback_index_files();
> - die(_("cannot lock HEAD ref"));
> - }
> -
> nl = strchr(sb.buf, '\n');
> if (nl)
> strbuf_setlen(&sb, nl + 1 - sb.buf);
> else
> strbuf_addch(&sb, '\n');
> strbuf_insert(&sb, 0, reflog_msg, strlen(reflog_msg));
> strbuf_insert(&sb, strlen(reflog_msg), ": ", 2);
>
> - if (write_ref_sha1(ref_lock, sha1, sb.buf) < 0) {
> + transaction = ref_transaction_begin();
> + if (!transaction ||
> + ref_transaction_update(transaction, "HEAD", sha1,
> + current_head ?
> + current_head->object.sha1 : NULL,
> + 0, !!current_head) ||
> + ref_transaction_commit(transaction, sb.buf, &err)) {
> rollback_index_files();
> - die(_("cannot update HEAD ref"));
> + die(_("HEAD: cannot update ref: %s"), err.buf);
Same question about !transaction (it also applies to later patches but I
won't mention it any more).
The error message changed from
fatal: cannot lock HEAD ref
to
fatal: HEAD: cannot update ref: Cannot lock the ref 'HEAD'.
Does the message from ref_transaction_commit always say what ref
was being updated when it failed? If so, it's tempting to just use
the message as-is:
fatal: Cannot lock the ref 'HEAD'
If the caller should add to the message, it could say something about
the context --- e.g.,
fatal: cannot update HEAD with new commit: cannot lock the ref 'HEAD'
Looking at that,
die("%s", err.buf)
seems simplest since even if "git commit" was being called in a loop,
it's already clear that git was trying to lock HEAD to advance it.
Thanks,
Jonathan
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