find-keyword

(find-keyword x) / (find-keyword ns nm)

clojure.core/find-keyword: the keyword for a keyword, a symbol's spelling or a string, nil for anything else; with two arguments the keyword ns/nm (a nil namespace drops; a nil name or a non-string part signals). Keywords are not interned here, so a spelling no keyword ever used answers its keyword where the oracle answers nil. As a value one or two arguments.