在 zsh shell 提示时显示当前分支

Question

I am trying to display the git branch on prompt on Big Sur. So I have created a script file to run for each new session .zshrc

# Git branch in prompt.
parse_git_branch() {
  git branch 2> /dev/null | sed -e '/^[^*]/d' -e 's/* \(.*\)/ [\1]/'
}
export PS1="\u@\h \W\[\033[01;33m\]\$(parse_git_branch)\[\033[00m\] $ "

The above doesn't work it actually displays the string not its outpupt.

\u@\h \W\[\033[01;33m\]$(parse_git_branch)\[\033[00m\] $

How can I show current branch in prompt on zsh shell?

Answer 1

Bash PS1 is not ZSH PS1, they differ. The \u \h etc. sequences are substituted by bash, they do not work in ZSH. Research both shells and how they differ.

Answer 2

I am assuming you want to display something like this [username@computername directory](branch)

The code below should do it for Zsh which is a little more involved than accomplishing the same task in bash . There are multiple solutions to this, and you can find more information here if you are interested.

# Load version control information
autoload -Uz vcs_info
precmd() { vcs_info }

# Format the vcs_info_msg_0_ variable
zstyle ':vcs_info:git:*' formats '%b'

# Set up the prompt (with git branch name)
setopt PROMPT_SUBST

PROMPT='[%n@%m %1~]%F{green}(${vcs_info_msg_0_})%F{white}$ '

It would be beneficial to read up on the differences between bash and zsh as you cannot use solutions found online interchangeably.