zsh prompt with git branch

gistfile1.txt

##############################################################################
## Zsh prompt
##############################################################################

# See http://kriener.org/articles/2009/06/04/zsh-prompt-magic
# and http://briancarper.net/blog/570/git-info-in-your-zsh-prompt for more
#autoload -Uz vcs_info
#zstyle ':vcs_info:*:prompt:*' check-for-changes false

cur_git_branch() {
  git branch --no-color 2>/dev/null|awk '/^\* (.*)/ {b=$2} END {if (b) {print "[" b "]"}}'
}

setopt PROMPT_SUBST
case $TERM in
    xterm*|rxvt*|screen|Apple_Terminal)
        PROMPT=$(echo '%{\e]0;%n@%m: %~\a\e[%(?.32.31)m%}%# %{\e[m%}')
        #RPROMPT=$(echo '${vcs_info_msg_0_} %{\e[32m%}%3~ %{\e[m%}%U%T%u')
        RPROMPT=$(echo '$(cur_git_branch) %{\e[32m%}%3~ %{\e[m%}%U%T%u')

        #precmd () {
        #  vcs_info 'prompt'
        #}

        # Echo current process name in the xterm title bar
        preexec () {
	  set_proxies
          print -Pn "\e]0;$1\a"
        }
        ;;
    *)
        PROMPT="[%n@%m] %# "
        ;;
esac