I did a bit of research on this and you're right, legacy encodings are one problem. More seriously there seems to be no established way to manage multilingual t

I did a bit of research on this and you're right, legacy encodings are one problem. More seriously there seems to be no established way to manage multilingual text which includes homoglyphs (say by using colour coding) so you would really be replacing one problem with another. It does seem like this Turkish I problem is the most conspicuous situation, maybe unique, where changing locale changes the behaviour of toupper/tolower. Unicode, on the other hand, has many homoglyphs and duplicate characters which all need to be dealt with. http://en.m.wikipedia.org/wiki/Homoglyph http://en.m.wikipedia.org/wiki/Homoglyph http://en.m.wikipedia.org/wiki/Duplicate_characters_in_Unicode http://en.m.wikipedia.org/wiki/Duplicate_characters_in_Unico...