Thank you for trying!
FWIW, there's nothing special about Perl 6 source code: when you run a script foo.pl, it's basically"foo.pl".IO.slurp.EVAL
or if you're more procedurally inclinedEVAL slurp "foo.pl"
So the source code is handled exactly the same as any other source of text: assumed to be encoded in UTF-8 (by default) and thus normalized using synthetic graphemes if necessary. Also note that CRLF is such a synthetic graphemesay "\r\n".chars; # 1