How do I take multiple filenames from the Raku command line?

Question

This Raku program works as I expect:

sub MAIN($name) { say "Got $name" }

I can pass a single name on the command line:

$ raku m1.raku foo
Got foo

The obvious extension, however,

sub MAIN(@names) { say "Got $_" for @names }

doesn't work:

$ raku mm.raku foo
Usage:
  mm.raku <names>
$ raku mm.raku foo bar
Usage:
  mm.raku <names>

What am I doing wrong?

Answer 1

What @cjm said.

However, you can go a little further than that, checking whether the names you specified, are actually files. And produce an error message if they are not. The trick is to use multi-dispatch:

subset File of Str where *.IO.f;

multi sub MAIN(*@files where @files.all ~~ File) {
    say "These are all files: @files.join(",")";
}
multi sub MAIN(*@files) {
    say "These are *NOT* files: @files.grep(* !~~ File).join(",")";
}

The first candidate will be run if all the names specified on the command line are in fact files. The second candidate will be run if the first didn't fire, implying that not all names specified are in fact files.