Re: How to use @{-1} with push?

Robert Dailey [off-list ref] writes:

So the push works with the fully-qualified ref, but not git branch:

I thought these are clear from their documentation.  "push" works on
refnames, "branch" works on branch names.  "push" takes an branch
name as a short-hand and adds refs/heads/ when it makes sense, but
because it does not make any sense for "git branch" to create a
"branch" in a random place in refs/ (e.g. "refs/tags/foo" is not a
branch), it takes "foo" (i.e. the name of the branch, whose
underlying ref is "refs/heads/foo").

So

	ref=$(git rev-parse --symbolic-full-name "$2") &&
        case "$ref" in
        '') echo >&2 "No such thing $2"; exit 1 ;;
        refs/heads/*) ref=${ref#refs/heads/} ;;
        *) echo >&2 "That's not a branch $2"; exit 2 ;;
	esac &&
	git push "$1" "refs/heads/$ref" &&
        git branch -D "$ref"

or something?

$ git rev-parse --symbolic-full-name foo
refs/heads/foo

$ git branch -d refs/heads/foo
error: branch 'refs/heads/foo' not found.

Any reason for this? I'm using git 2.7.4 on windows

On Fri, Mar 25, 2016 at 1:58 PM, Junio C Hamano [off-list ref] wrote:

I thought these are clear from their documentation.  "push" works on
refnames, "branch" works on branch names.  "push" takes an branch
name as a short-hand and adds refs/heads/ when it makes sense, but
because it does not make any sense for "git branch" to create a
"branch" in a random place in refs/ (e.g. "refs/tags/foo" is not a
branch), it takes "foo" (i.e. the name of the branch, whose
underlying ref is "refs/heads/foo").

So

        ref=$(git rev-parse --symbolic-full-name "$2") &&
        case "$ref" in
        '') echo >&2 "No such thing $2"; exit 1 ;;
        refs/heads/*) ref=${ref#refs/heads/} ;;
        *) echo >&2 "That's not a branch $2"; exit 2 ;;
        esac &&
        git push "$1" "refs/heads/$ref" &&
        git branch -D "$ref"

or something?

Reading the git documentation feels a lot like reading the C++
standard. Not the best place to go to learn something. Some of the
terminology is very detail-oriented. For example, until you explained
the differences between push & branch, I always thought "ref" and
"branch" were interchangeable. But now it's clear to me that a branch
is just a type of ref, but refs are not branches. Also as a Windows
developer, I am not as well-versed in bash scripting as I'd like to
be.

So thanks for your explanation, it is clear now.