Eszett

[Vint Cerf]

Mark,

this working group accepted the risks of making eszett pvalid. can we  
please stop re-opening the debate?

vint


On Jul 17, 2009, at 9:18 PM, Mark Davis ⌛ wrote:

> If we were starting with a blank slate, it would be feasible to have  
> ß/ẞ kept separate from ss/SS (although note that the German  
> national standards body doesn't: the uppercase of ß is SS, which is  
> why they got connected in the first place in Unicode).
>
> But we are not starting with a clean slate: we are facing with  
> changes to an existing widely-deployed standard, over 6 years old,  
> which is a long time in terms of the web. We have two options.
> A. Maintain compatibility with IDNA2008:
>
> URL	 Result
> When
> http://ÖBB.at	http://xn--bb-eka.at	always
> http://öbb.at
>
> B. Try to separate them, leaving users with a de-facto indeterminant  
> mapping.
>
> URL	 Result
> When
> http://ÖBB.at 	http://xn--bb-nha.at 	sometimes
> http://ÖBB.at	http://xn--bb-eka.at	sometimes
> http://öbb.at	http://xn--bb-eka.at	always
>
> Why would this happen? Well, for some indeterminant time, both  
> idna2003 and idna2008 clients will exist. So you send an email with  
> your favorite bank to friends, and the site they go to is a spoof  
> site. Moreover, in an effort to maintain compatibility for clients,  
> some client-software will do a dual lookup; first try one then the  
> other. If someone comes in with an intervening registration, for a  
> spoof site, then a URL that used to work for you now fails.
>
> Now perhaps the NICs for de, at, and ch will address this by  
> bundling or blocking. But bundling or blocking defeats the purpose  
> of separating them, and there is little reason to think  
> that .com, .biz, .whatever will all do the same; and that is not to  
> speak of the many, many more registries below the top level.
>
>
> Mark
>
>
> On Sun, Jul 12, 2009 at 03:13, Cary Karp <ck at nic.museum> wrote:
> > I just hope that ß/ẞ are left alone and not conflated with esses  
> at
> > least not by us; a registrar may wish to do so.
>
> That's what I feel, as well.
>
> /Cary
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