RE: [idn] Renaming "AMC-Z"

[Yves Arrouye <yves@realnames.com>]

> I agree. ACE should stand for the UCS into ASCII A-Za-z0-9- encoding.
> No length restrictions, no nameprep. Though the UCS must be normalised
> so that it is well defined.
> That is, ACE should stands for:
> - UCS normalised into Unicode form C
> - then encoded into the characters A-Za-z0-9-

I wouldn't mix normalization with this. First, in the case of IDN, the
normalization is KC, and it follows some character mappings, and also
precedes some other code point validation (forbidden code points).

In addition to that, ACE drafts do not require the normalization. The RACE
one doesn't even mention it, and the AMC-ACE-Z simply acknowledges the fact
that this particular ACE, used in the context of IDNA, is applied on strings
that went through Nameprep first.

I am for keeping the separation between the two processes. Though I see why
one would want to mix them, since people typically refer (improperly I
believe) to the ACE-encoded IDN and not to the ACE-endoded Nameprepped-IDN,
while meaning the latter. Maybe it should be the IDNA-encoded IDN?

YA