noncharacters and unassigned

[John C Klensin]

--On Friday, February 08, 2008 9:32 AM -0800 Erik van der Poel 
<erikv at google.com> wrote:

> The Unicode "private use" characters are already DISALLOWED in
> IDNA200X. And that's good.
>
> I was referring to the Unicode "noncharacters", some of which
> are UNASSIGNED in IDNA200X, others missing all together.
>
> Noncharacters should be DISALLOWED in IDNA200X, since they are
> not reserved. They have designated functions.

Agreed, fwiw.
   john