Jeff King <peff@xxxxxxxx> writes:
> This comes originally from Junio's 84679d470. I cannot see how naming
> the new branch HEAD would make any difference to the test, but perhaps I
> am missing something.
Nah, I think it was just a random string that came to mind and the
topic being "ah we blindly dereference something when showing %(HEAD)"
it was plausible I thought of "H E A D" as that random string before
I used my usual other random strings like frotz ;-)
> I noticed this while digging on a nearby issue around "git branch -m @".
> This does happen to be the only test that checks that we can make a
> branch called refs/heads/HEAD, and I found it because it triggers if you
> try to disallow "git branch -m HEAD". :)
About that "nearby" one, does it even make sense to do the interpret
thing on the <new> name? I can understand "please rename the branch
I was previously on to this new name" wanting to say @{-1} when the
user does not recall the exact spelling of a long name, but I do not
quite see how "to this new name" part benefits by the "interpret
branch name" magic in the first place.
> If we care about that, though, I think we should make an explicit test
> for "git branch HEAD". But I'm not sure we _do_ care about that. Making
> a branch called HEAD is moderately insane, and I don't think it would be
> unreasonable for us to outlaw it at some point.
Yeah, at that point we would have "test_must_fail git branch HEAD".
> t/t6300-for-each-ref.sh | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/t/t6300-for-each-ref.sh b/t/t6300-for-each-ref.sh
> index aea1dfc71..a468041c5 100755
> --- a/t/t6300-for-each-ref.sh
> +++ b/t/t6300-for-each-ref.sh
> @@ -558,7 +558,7 @@ test_expect_success 'do not dereference NULL upon %(HEAD) on unborn branch' '
> test_when_finished "git checkout master" &&
> git for-each-ref --format="%(HEAD) %(refname:short)" refs/heads/ >actual &&
> sed -e "s/^\* / /" actual >expect &&
> - git checkout --orphan HEAD &&
> + git checkout --orphan orphaned-branch &&
> git for-each-ref --format="%(HEAD) %(refname:short)" refs/heads/ >actual &&
> test_cmp expect actual
> '