Re: [idn] (bias) summary of reordering discussion<011701c15be0$4473db90$dd00a8c0@jamessonyvaio>

[Martin Duerst <duerst@w3.org>]

Hello Patrick,

Just some clarifications below:

At 19:41 01/10/23 +0200, Patrik F$BgM(Btstr$B‹N(B wrote:

>o Nameprep mappings is defined by UTC, not IETF.
>   -> I am nervous when we in IETF talk about these things

The main mappings used by nameprep (casemapping and normalization)
are defined by the UTC. But it is IETF that chooses which mappings
to select (e.g. NFC vs. NFKC), it is IETF that may request other
mappings to be created (NFC was created based on a request by W3C,
an additional file was added to help IETF with case mapping,
a (tentative, implicit) request for TC/SC mappings was turned down).

Also, nameprep contains a few additional mappings and prohibitions
that are motivated by the specific situation of domain names,
without taking these from anywhere.


Regards,   Martin.