Re: [idn] Re: IDNA: is the specification proper, adequate, and complete?

["James Seng" <jseng@pobox.org.sg>]

Whether DF should be decompose to "SS" or otherwise is defined in NFKC.
Therefore, this question should be appropriately address in Unicode
Consortium.

-James Seng

> While there is not doubt about the above, I am not sure that
> the nameprep specification that 00DF (small letter sharp s) should
> be matted to "ss". I am not sure how Germans handle this character.
> Do they always replace double s with it? Or only on some special words?
> If they do not generally do this, the mapping should not be done.
> It is somewhat like the fact that the Greek version of latin A is
> not mapped to the Roman version of latin A. Even though their origin
> is the same latin A and look alike.
> While "small letter sharp s" looks like "small letter beta", there are
> no similarities between double s and "small letter sharp s". So why not
> let "small letter sharp s" remain that and be a distinctive character
> in a domain name. I assume Germans use it to write German words. Not
> to replace double s in non-German names.
>
>    Dan
>
>