> But I would conclude that the textbox should only use capital letters That would make sense, sure. > Minuscules are not different letters, they are variant

> But I would conclude that the textbox should only use capital letters That would make sense, sure. > Minuscules are not different letters, they are variant forms Just like U and V, J and I in some varieties of Latin. (The fact that Unicode encodes them differently doesn't mean anything: Unicode also encodes A and Ａ, fi and fi differently.)