panic(r)
		}
		break
	}
}

func (slist *Slist) PrintOne(doparen bool) string {
	if slist == nil {
		return ""
	}
	var r string
	if slist.isatom {
		if slist.isstring {
			r = slist.String()
		} else {
			r = fmt.Sprintf("%v", slist.Integer())
		}
	} else {
		if doparen {
			r += "("
		}
		r += slist.Car().PrintOne(true)
		if slist.Cdr() != nil {
			r += " "