Show Git branch in zsh (insert it into ~/.zshrc on Mac)

.zshrc

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

COLOR_DEF=$'\e[0m'
COLOR_DIR=$'\e[38;5;197m'
COLOR_GIT=$'\e[38;5;39m'

# 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='${COLOR_DIR}%~ ${COLOR_GIT}${vcs_info_msg_0_} ${COLOR_DEF}$ '