Re: [idn] Re: Back to work (Nameprep) (was: Re: Just send UTF-8 with nameprep (was: RE: [idn] Reality Check))

[Keith Moore <moore@cs.utk.edu>]

> Now, let's think about another case of   all-Greek "oo.com" and all-Latin
> "oo.com":
> Either of the two consists of scripts from only single character sets.
> But the two still look very similiar. Do you have any good idea about this ?

first, how likely is this in practice that a label of all Greek letters
will accidentally collide with a label of all Latin letters?   (as opposed
to a deliberate collision)

for second-level domains at least, and for some third-level domains,
it would make sense for the registry to disallow labels whose appearances
collide with all-ASCII labels.   there are already some such rules in place
even for ASCII, these would just be extended.