Re: Submodule "git branch" says (HEAD detached at <incorrect-commit>)

From: Julius Smith <jos@ccrma.stanford.edu>
Date: Jul 3, 2019, 19:00 UTC
Message-ID: <CAMPRpjULRpzG+Xf8Ezc2+-4cVB7phGs9h+7nxhx-GP44__mfeg@mail.gmail.com>
In-Reply-To: <xmqq7e8z0ypm.fsf@gitster-ct.c.googlers.com>

Thanks for the explanation. So then to find out the current commit of the submodule, I should cd into the submodule directory and say "git rev-parse HEAD" or "git log -n1", etc.

Suggestion: for a moved HEAD, it would be nice to show "(detached from
<original-commit> now at <current-commit>)".

Thanks for considering, and thanks for a truly great software tool.

- Julius

On Wed, Jul 3, 2019 at 11:17 AM Junio C Hamano <gitster@pobox.com> wrote:

Show 30 quoted lines

>
> Julius Smith <jos@ccrma.stanford.edu> writes:
>
> > "git branch" in the the submodule directory says "(detached from
> > <commit-for-D>)" but this seems to be wrong.  I did "git diff
> > <commit>" in the submodule directory to show that it was the C-commit
> > and not the D-commit as it appeared.  Could "git branch" in the
> > submodule directory be referring to the commit at the time it was
> > first detached and not updating after a "git submodule update --init"
> > in the parent?
>
> There are "detached from" and "detached at" messages.  Their use was
> somewhat inconsistent in the older version of Git, but at least
> since 2.4.0 (quoting from Documentation/RelNotes/2.4.0.txt):
>
>  * The phrasing "git branch" uses to describe a detached HEAD has been
>    updated to agree with the phrasing used by "git status":
>
>     - When HEAD is at the same commit as when it was originally
>       detached, they now both show "detached at <commit object name>".
>
>     - When HEAD has moved since it was originally detached, they now
>       both show "detached from <commit object name>".
>
>    Previously, "git branch" always used "from".
>
> "git branch" and "git status" should be using the same language to
> describe the situation.
>
>

-- 
Julius O. Smith III <jos@ccrma.stanford.edu>
Professor of Music and, by courtesy, Electrical Engineering
CCRMA, Stanford University
http://ccrma.stanford.edu/~jos/