zsh Git branch in your prompt

.zshrc_prompt

# zsh Git branch in your prompt, etc.

function precmd() {
# define colors
local RED="%{%}"
local LIGHT_RED="%{%}"
local CYAN="%{%}"
local LIGHT_CYAN="%{%}"
local BLUE="%{%}"
local LIGHT_BLUE="%{%}"
local GREEN="%{%}"
local LIGHT_GREEN="%{%}"
local MAGENTA="%{%}"
local LIGHT_MAGENTA="%{%}"
local YELLOW="%{%}"
local LIGHT_YELLOW="%{%}"
local GRAY="%{%}"
local LIGHT_GRAY="%{%}"
local ORANGE="%{%}"
local WHITE="%{%}"
local NO_COLOUR="%{%}"

git_prompt_info() {
  ref=$(git-symbolic-ref HEAD 2> /dev/null) || return
  echo "${ref#refs/heads/}"
}

# set the prompt (login cwd git-branch)
PS1="$GRAY%n@%m$NO_COLOUR $LIGHT_YELLOW%~$NO_COLOUR $GREEN$(git_prompt_info)$NO_COLOUR
$ "
}