Re: [idn] proposed i18n naming rules

[Erik Nordmark <Erik.Nordmark@eng.sun.com>]

> > Looking for clue. Why aren't IDNs normalized through nameprep just
> > like IHNs? What are the benefits of this?
> 
> There are no benefits per se, but penalties which are avoided. Nameprep
> forbids characters which are commonly used in labels that are not valid in
> hostnames (including "_" for SRV, and chars valid for LHS of email
> addresses in SOA/RP), so running all IDNs through nameprep would prohibit
> IDNs which are not IHIs.

OK, so clearly all of nameprep doesn't make sense.

But the unicode normalization and presumably other parts of nameprep
would make sense for IDNs as well as IHNs. Perhaps it is only section 5.1
and 5.10 in nameprep that need to be different for IDNs.

> I'm putting together a summary of the issues and will post it soon.

Good.

  Erik