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Re: About tests 37-41 (headers) *wkey

From: Vicente Luque Centeno <vlc@it.uc3m.es>
Date: Fri, 5 May 2006 12:23:41 +0200 (CEST)
To: Johannes Koch <koch@w3development.de>
Cc: w3c-wai-gl@w3.org
Message-ID: <Pine.LNX.4.61.0605051215001.8796@violin.it.uc3m.es>

Schematron or XSLT/XQuery rules can be applied to HTML documents if a HTML 
parser (instead of a XML parser) is being used. For instance, my 
XSLT-based Web Accessibility evaluator [1] can be applied to HTML pages 
that are not XHTML (see the extended interface).

So, my question is: wouldn't be nice to provide formalized expressions 
(based on Schematron or XSLT templates) in the WCAG 2.0 HTML Techniques 
draft? Web developers would have objective and formalized tests instead of 
just subjective prose. Examples are good, but not enough.

[1] http://www.it.uc3m.es/vlc/waex.html

Vicente Luque Centeno
Dep. Ingeniería Telemática
Universidad Carlos III de Madrid

On Fri, 5 May 2006, Johannes Koch wrote:

> Vicente Luque Centeno wrote:
>> What about Schematron rules? Or (even more expressive) XSLT templates like 
>> the ones at [1]?
> I think Christophe and the others were talking about H74 (opening and closing 
> tags according to specification). You cannot check this with either 
> Schematron or XSLT/XQuery. They build on top of parsing. But if proper 
> parsing is impossible ...
>> I am afraid that DTDs and Schemas are not very powerful and many 
>> checkpoints are not expressible in a DTD. However, many of them can be 
>> expressed with XSLT/XPath expressions.
> Of course there are test that can be expressed using the above-mentioned 
> technologies.
> -- 
> Johannes Koch
> In te domine speravi; non confundar in aeternum.
>                            (Te Deum, 4th cent.)
Received on Friday, 5 May 2006 10:23:50 UTC

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