Kaartic Sivaraam <kaartic.sivaraam@xxxxxxxxx> writes:
>> Stepping back a bit, the mild suspicion above says
>>
>> $ git checkout HEAD^0
>> ... do things ...
>> $ git checkout -b temp
>> ... do more things ...
>> $ git checkout -B @{-1}
>>
>> that creates a new branch whose name is 40-hex of a commit that
>> happens to be where we started the whole dance *is* a bug. No sane
>> user expects that to happen, and the last step "checkout -B @{-1}"
>> should result in an error instead [*1*].
>>
>> I was wondering if "git check-ref-format --branch @{-1}", when used
>> in place of "checkout -B @{-1}" in the above sequence,
>
> I guess you mean '... "git checkout -B $(git check-ref-format --branch
> @{-1}", when used in place of "git checkout -B @{-1}" ...' ?
No you guessed wrong. I was (and am) wondering if the last step in
the following sequence should fail.
>> $ git checkout HEAD^0
>> ... do things ...
>> $ git checkout -b temp
>> ... do more things ...
>> $ git check-ref-format --branch @{-1}
And I am leaning towards saying that it is a bug that it does not
fail; @{-1} is a detached HEAD and not a concrete branch name in
this case, so "check-ref-format --branch" should at least notice
and say that it is a request that may lead to a nonsense next step
(which is to create a branch with that 40-hex name).
