Reserved general punctuation

[Mark Davis]

I agree with Ken and John, after listening to this discussion. There is no
really functional difference (as I said before), and I think the
conceptually simpler option should take the field.

Mark

On Fri, May 2, 2008 at 12:11 PM, John C Klensin <klensin at jck.com> wrote:

>
>
> --On Friday, 02 May, 2008 11:22 -0700 Kenneth Whistler
> <kenw at sybase.com> wrote:
>
> > Frank Ellermann said:
> >
> >> That is the definition at the moment.  I see UNASSIGNED
> >> as an invitation to abuse where it is about code points
> >> that will be never allowed.
> >>
> >> I hope to get cases like u+2705 into the DISALLOWED set,
> >> where they can't attract abuse attempts.
> >
> > Can you provide a clear example of what kind of abuse
> > you envision?
> >
> > As I see it, U+2705, under the rules proposed here,
> > cannot be in an IDN in 2008, or in 2018, or even if
> > encoded as some kind of symbol dingbat in a distant
> > version of Unicode in 2028, in an IDN in 2028.
> >
> > I just don't see the marginal value here of trying
> > to take some specific ranges of unassigned code points
> > in Unicode and explicitly designating them in IDNA 2008
> > as more toxic than ordinary unassigned code points. It
> > just seems to invite confusion about the status of
> > code points in the table -- and I view confusion as
> > the more likely cause of attracting abuse, rather than
> > anything specific about U+2705.
> >...
>
> FWIW, I agree with Ken.  We should keep unassigned code points
> as UNASSIGNED (regardless of whatever else we might think we
> know about them) and maintain the position that only code points
> that have actually been bound to characters can be DISALLOWED
> (or anything other than UNASSIGNED).  That keeps things simple
> and easy to understand, and avoids all sorts of "opportunities"
> with edge cases that no one has really argued that we need.
>
>    john
>
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-- 
Mark
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