def key_word
import cli@0.2.0.0/cli.bend as Cliimport Base
4820def key_word(found: Maybe<&2, Maybe<&2, String>>,
4821 children: List<&2, Item>) -> KeyStep:
4822 match found:
4823 case None{}: KeyMiss{}
4824 case Some{rest}: key_user(has_builtin(children), rest)