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Re: Requesting IESG Approval for the Media Type application/xslt+xml, application/xquery+xml, and application/xquery

From: Martin J. Dürst <duerst@it.aoyama.ac.jp>
Date: Fri, 02 Oct 2009 17:02:19 +0900
Message-ID: <4AC5B38B.90802@it.aoyama.ac.jp>
To: Liam Quin <liam@w3.org>
CC: Alexey Melnikov <alexey.melnikov@isode.com>, Philippe Le Hegaret <plh@w3.org>, public-ietf-w3c@w3.org, Dan Connolly <connolly@w3.org>, iesg@ietf.org, Carine Bournez <carine@w3.org>


On 2009/10/02 10:30, Liam Quin wrote:
> On Thu, Oct 01, 2009 at 10:14:57PM +0100, Alexey Melnikov wrote:
>> <http://www.w3.org/TR/2009/PER-xquery-20090421/#id-registration-of-mime-type>

>> 2).
>>> The syntax of XQuery is expressed in Unicode but may be written with
>>> any Unicode-compatible character encoding, including UTF-8 or UTF-16,
>>> or transported as US-ASCII or Latin-1 with Unicode characters outside
>>> the range of the given encoding represented using an XML-style&#xddd;
>>> syntax.
>> Is there any good reason for allowing Latin-1? IETF pretty much settled
>> on only using US-ASCII, UTF-8 (and rarely UTF-16).
>
> To the best of my memory it was for in response to a comment regarding
> HTTP cpmpatibility, but, there is also no good reason to forbid it at
> this point, with over 50 XQuery implementations in the field.
>
> For XQuery 1.1 we could possibly disallow Latin-1, but I don't think
> we'd gain anything now.  If we were still in 2005, we'd be in a
> position to change such things, and I think do a better job.
> Removing it could only hurt interop now I think.

I think
http://www.w3.org/TR/2009/PER-xquery-20090421/#dt-encoding-declaration
makes it clear that XQuery documents can be in very much any encoding. 
So the mention of Latin-1 in the Mime type registration is just an 
example. As such, it can stay in the registration template or be removed 
without any effect on interoperability.

[charset expert reviewer hat on]
However, there is no 'charset' "Latin-1" registered at 
http://www.iana.org/assignments/character-sets. So I strongly suggest to 
replace it with ISO-8859-1, or leave it out.
[hat off]

Regards,    Martin.

-- 
#-# Martin J. Dürst, Professor, Aoyama Gakuin University
#-# http://www.sw.it.aoyama.ac.jp   mailto:duerst@it.aoyama.ac.jp
Received on Friday, 2 October 2009 08:03:29 GMT

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