在 git 别名中使用变量

Question

I'm trying to create an alias for checking out the master branch and merging the branch I was on before switching. Right now, my alias looks like this: med = ";f() { git checkout master; git merge ${1}; git branch -d ${1}; }; f"

It means that every time I want to use it, I have to call it using the current branch's name: git med topic . What I want is avoid it, calling git med without arguments.

I know that I can get the current branch's name like this: git rev-parse --abbrev-ref HEAD , but after I have switched to master, I can no longer use it. So, I need to save it in a variable before switching to master.

How do I work with variables in git alias?

I'm on Windows, using posh-git.

Answer 1

This is a combination of my comment and @torek 's:

med = "!f() {BRANCH=`git symbolic-ref --short HEAD`; git checkout master; git merge $BRANCH; git branch -d $BRANCH; }; f"

which seems to work. (And bails out early, rather than late, if you're in a detached HEAD state)

Answer 2

I found in bash (debian) that wrapping the alias in double quotes didn't work.

I had to use single quotes:

'!f() { BRANCH=`git symbolic-ref --short HEAD`; git checkout master; git merge $BRANCH; git branch -d $BRANCH; }; f'`