prompt $ rak --help
.....
Option format:
--foo Option "foo" is True
--/foo Option "foo" is False
--no-foo Option "foo" is False
--foo=bar Option "foo" is "bar"
Use of uninitialized value element of type Any in string context.
Methods .^name, .raku, .gist, or .say can be used to stringify it to something meaningful.
in block at /home/demanuel/.rakubrew/versions/moar-master/install/share/perl6/site/sources/B83F4237373A0EFC08A9177A5593B0E12D0FDB31 (CLI::Help) line 14
Unknown help category:
prompt $
I'm just doing: