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 > >
