http://www.perlmonks.org?node_id=1043473

McA has asked for the wisdom of the Perl Monks concerning the following question:

Hi all,

there is much stuff out there for utf8::is_utf8. My question: Is this a valid/accepted/reliable function to introspect a perl string? Is it valid to rely on the upgrading semantics when I concatenate a utf8 flagged string with an unflagged one?

Best regards
McA