[gnso-rn-wg] Re: [gnso-idn-wg] Re: Banning CCHH anywhere in a label

[Avri Doria <avri@xxxxxxx>]

Hi,

On 9 mar 2007, at 15.18, Tan, William wrote:

> Exception to this is permissible for languages with established  
> orthographies and conventions that require the commingled use of  
> multiple scripts. In such cases, visually confusable characters  
> from different scripts will not be allowed to co-exist in a single  
> set of permissible codepoints unless a corresponding policy and  
> character table is clearly defined. (d) All registry policies based  
> on these considerations will be documented and publicly available,  
> including a character table for each permissible set of code  
> points, before the registration of any IDN associated with such an  
> aggregate may be accepted.

Thanks for reminding me of this.  I had read that but fixated on the  
first part that prohibited commingling of scripts.  And in the  
context of talking about prohibiting the comingling of multi-labels  
names, had just assumed the strong case against commingling within a  
single label.
It seems that this needs to be discussed in the context of the  
discussions we are currently having and we need to confirm whether  
this will even remain possible in the new IDNA that is currently  
being envisioned. (Section 5 of draft-klensin-idnabis-issues-01.txt)  
- _not_ that i am arguing that policy should be subject to future  
protocol development plans, but we should certainly be aware of any  
possible conflicts between assumptions.
In this discussion we need to separate two arguments:

- would it be possible to resolve existing labels that have this  
characteristic (i think the answer is probably, but i am not positive)
- would it be possible to register new labels with this  
characteristic (i think the answer is probably not, but i am not  
positive)

a.