utf-8 and lower to upper

Agri <[email protected]>
Newsgroups gmane.comp.php.internationalization
Message-ID <[email protected]>
i use utf8 for internal encoding of strings
i want to use ucfirst for cyrillic chars... but it doesn't work
i tried to setlocale (LC_ALL, ru_RU.utf8) -- nothing was changed
is it a bug? how to make ucfirst works in this case?

Agri

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