Git Feature Request - show current branch

Git Feature Request - show current branch

[mdconf]

Hello,

To start with, I did not find an official way to submit feature request so hopefully this is the right way to do so - if not then my apologize & appreciate if somebody could re-submit to the proper place.

I'd like to request adding a parameter to 'git branch' that would only show the current branch (w/o the star) - i.e. the outcome should only be the name of the branch that is normally marked with the star when I do 'git branch' command. This may be very helpful in some external scripts that just simply need to know the name of the current branch. I know there are multiple ways to do this today (some described here: http://stackoverflow.com/questions/6245570/how-to-get-current-branch-name-in-git) but I really think that adding simple argument to 'git branch' would be very useful instead of forcing people to use 'workarounds'.

My suggestion is is to name the parameter '--current' or '--show-current'.
Example:

Command: git branch
Outcome:
 branchA
 branchB
* master

Command: git branch --current
Outcome:
master

Thank you,
Martin

RE: Git Feature Request - show current branch

[Randall S. Becker]

Hi Martin,

I use:

git symbolic-ref --short HEAD

in scripts. Not sure it's the best way, but it works 100% for me.

Regards,
Randall

-----Original Message-----
From: git-owner@vger.kernel.org [mailto:git-owner@vger.kernel.org] On Behalf Of mdconf@seznam.cz
Sent: February 19, 2015 8:15 AM
To: git@vger.kernel.org
Subject: Git Feature Request - show current branch

Hello,

To start with, I did not find an official way to submit feature request so hopefully this is the right way to do so - if not then my apologize & appreciate if somebody could re-submit to the proper place.

I'd like to request adding a parameter to 'git branch' that would only show the current branch (w/o the star) - i.e. the outcome should only be the name of the branch that is normally marked with the star when I do 'git branch' command. This may be very helpful in some external scripts that just simply need to know the name of the current branch. I know there are multiple ways to do this today (some described here: http://stackoverflow.com/questions/6245570/how-to-get-current-branch-name-in-git) but I really think that adding simple argument to 'git branch' would be very useful instead of forcing people to use 'workarounds'.

My suggestion is is to name the parameter '--current' or '--show-current'.
Example:

Command: git branch
Outcome:
 branchA
 branchB
* master

Command: git branch --current
Outcome:
master

Thank you,
Martin
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Re: Git Feature Request - show current branch

[Michael J Gruber]

Randall S. Becker venit, vidit, dixit 19.02.2015 14:32:
> git symbolic-ref --short HEAD

That errors out when HEAD is detached.

git rev-parse --symbolic-full-name [--abbrev-ref] HEAD

returns the branch name or HEAD. Though it's a bit difficult to discover.

I guess git 3.0 will have "git branch" and "git branches" :)

Michael

Re: Git Feature Request - show current branch

[Junio C Hamano]

Michael J Gruber <git@drmicha.warpmail.net> 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?

Re: Git Feature Request - show current branch

[Michael J Gruber]

Junio C Hamano venit, vidit, dixit 19.02.2015 19:10:
> Michael J Gruber <git@drmicha.warpmail.net> 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?
> 

If you want to be defenive, don't use --abbrev-ref, just git rev-parse
--symbolic-full-name  HEAD

The original request was for a one-liner, I think.

Michael