If we're going to make this change (which appears to be compatible with other Unicode-handling modern regexen such as Python and PCRE), we should at least provide a way out for the user who wants true Unicode support without having to jump through lots of hoops. Python, for example, does this with (?u). Since Perl 5 uses (?letter) to map to the modifier letters, it seems obvious to make this a modifier :u, which should probably be turned on by default with "use locale".

Doing that gives the expected behavior for POSIX-friendly uses and yet avoids snubbing users of P5 regexes who routinely match text from other languages/regions.

naïveté (n) - Assuming your experiences map cleanly to the set of all experiences....

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