Re: [idn] IRIs ought to use internationalized *host* names

[Keld Jørn Simonsen <keld@dkuug.dk>]

On Wed, Mar 27, 2002 at 03:30:59AM +0000, Adam M. Costello wrote:
> James Seng/Personal <jseng@pobox.org.sg> wrote:
> 
> Which characters should be allowed in internationalized host labels?
> This is an interesting question in its own right, and it's possible that
> the IESG will demand an answer.

That is indeed a good question. The same question has been put forward
for programming languages that can use full ISO 10646 (Unicode) in
their variable names, and ISO has developed a list of characters 
that then are recommended for use in identifiers. This generally
consist of letters, digits and characters that can be used in
normal words in any language of the world. The specification is
available in annex A of ISO/IEC TR 10176. Leading Unicode people
participated in creating this list, which is freely available.
Get it via http://www.dkuug.dk/jtc1/sc22/wg20

Kind regards
Keld