How can I change extended latin characters to their unaccented ASCII equivalents?

Question

I need a generic transliteration or substitution regex that will map extended latin characters to similar looking ASCII characters, and all other extended characters to \'\'

Answer 1

Use Unicode::Normalize to get the NFD($str). In this form all the characters with diacritics will be turned into a base character followed by a combining diacritic character. Then simply remove all the non-ASCII characters.