l() {
	r=`(echo ../; ls -F) | lst`
	key=`printf '%s\n' "$r" | head -1`
	path=`printf '%s\n' "$r" | tail -1`
	case $key in
	13) cd "$path" ;;
	101) vi "$path" ;; # e
	32) cd "$path" && l ;; # space
	esac
}