(defknown %more-arg-context (t t) (values t index) (flushable))
(defknown %more-arg (t index) t)
(defknown %more-arg-values (t index index) * (flushable))
(defknown %more-arg-context (t t) (values t index) (flushable))
(defknown %more-arg (t index) t)
(defknown %more-arg-values (t index index) * (flushable))