Changing the xn-- prefix

[YAO Jiankang]

----- Original Message ----- 
From: "Patrik Fältström" <patrik at frobbit.se>
To: "Shawn Steele" <Shawn.Steele at microsoft.com>
Cc: <idna-update at alvestrand.no>; "John C Klensin" <klensin at jck.com>; "Mark Davis" <mark.davis at icu-project.org>
Sent: Tuesday, March 25, 2008 10:23 AM
Subject: Re: Changing the xn-- prefix


> On 25 mar 2008, at 00.13, Shawn Steele wrote:
> 
>> I reread your original mail, and in particular I don't want to get  
>> bogged down in the debate of details while trying to set the  
>> guidelines, but I'd like to try for "A prefix change MUST be  
>> avoided" (removing the condition).  If that's going to cause too  
>> much randomization, then I'd back down, but the repercussions of  
>> changing the prefix are huge.
> 
> I am personally in favor of text in the charter that say "The prefix  
> xn-- MUST NOT be changed." where MUST NOT is defined according to the  
> IETF definition in RFC 2119 (http://www.ietf.org/rfc/rfc2119.txt).  

+1


> This put a constrain on the changes the wg is allowed to do to  
> IDNA200X (not large so that the prefix has to change) -- at least not  
> without rechartering.
> 
>    Patrik
> 
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