> >But they *are* allowed because the Server S uses Nameprep-08! > > I'm misunderstanding your scenario then. You said in nameprep-08, > character U+XXXX has a "deleting mapping". I understood that as > "character U+XXXX is now assigned but is prohibited". If that's not > what you meant, please help me.
I meant that Nameprep-08 maps the codepoint out (to reuse the language in Nameprep). Let's say because this codepoint is a new variant selector, another zero-width thingamagic, whatever. > >No this one is a specific critic of IDN breaking the existing DNS > "matching > >must be case insensitive rule." If it is not must (MUST) then maybe it's > not > >an issue. > > There is no such rule: there is a strong attempt. The Turkish dotless > I is an example of where the attempt will inherently fail in one case > or the other. OK. Forget the case argument then. (Man, I am glad I won't be at the end of customer support for IDN. And that's not a reflection on the IDN work, just the complexity of the issue and the user expectations.) YA
