thats right. the spec states that if destination is non-nil then format returns nil. otherwise a string http://www.lispworks.com/documentation/lw50/CLHS/Body/f

thats right. the spec states that if destination is non-nil then format returns nil. otherwise a string http://www.lispworks.com/documentation/lw50/CLHS/Body/f_format.htm#:~:text=Description%3A,kind%20of%20formatting%20is%20desired http://www.lispworks.com/documentation/lw50/CLHS/Body/f_form....