Can you help me how this function does what it does, like step by step?
function! GitBranch()
return system("git rev-parse --abbrev-ref HEAD 2>/dev/null | tr -d '\n'")
endfunction
I previously used a plugin. Now I came across this function but can't understand it. Can anyone help me?
The function calls Vim's system() function. This passes its argument (a pipeline containing a git command) on to the shell and returns its output. See help system().
I'm afraid explaining the way any given shell pipeline works isn't within the scope of this site. I'd recommend reading man git-rev-parse and man tr in your shell, or perhaps you could ask on Stack Overflow.
To be honest, you don't really need to know in detail how the git command works. It returns your current branch: that's all you need to know!
