chpwd() {
    [[ -t 1 ]] || return
    case $TERM in
      sun-cmd) print -Pn "\e]l%# - %~\e\\"
        ;;
      *xterm*|rxvt|(dt|k|E)term) print -Pn "\e]2;%# - %~\a"
        ;;
    esac
  }
  cd .