Michael J Gruber <git@xxxxxxxxxxxxxxxxxxxx> writes:
> Randall S. Becker venit, vidit, dixit 19.02.2015 14:32:
>> git symbolic-ref --short HEAD
>
> That errors out when HEAD is detached.
Isn't that what you would want to happen anyway?
if current=$(that command)
then
you know $current is checked out
else
you know HEAD is detached
fi
If you used another command that gives either the name of the
current branch or 4-letter H-E-A-D without any other indication, you
cannot tell if you checked out the "HEAD" branch aka refs/heads/HEAD
or you are not on any branch. The former would happen after doing
this:
$ git update-ref refs/heads/HEAD HEAD
$ git checkout HEAD
Of course, this is not a recommended practice, and "git branch"
these days refuses to create refs/heads/HEAD to discourage you from
doing so by mistake, but there is no guarantee that the repository
whatever script you are writing to work in was created and used by
sane people ;-) so you would want to be defensive, no?
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