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Re: XHTML validation (was: texi to epub)

From: Per Bothner
Subject: Re: XHTML validation (was: texi to epub)
Date: Mon, 20 Dec 2021 11:37:38 -0800
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.3.0

Patrice Dumas wrote:
However it looks like HTML5 cannot be validated...

In the sense of validating using an old-style DTD validator.
However, that has limited usefulness regardless.
HTML5 is defined in terms of a very specific parsing algorithm, meant
to avoid the incompatible extensions and work-around of the old HTML4 browsers.

The W3C Markup Validator (https://github.com/w3c/markup-validator/) makes use of
and suggests the NU Validator (https://github.com/validator/validator/) for 

On 12/20/21 05:40, Kurt Hornik wrote:
You mean with with the W3C validator?  This indeed seems to be the case,
perhaps a result of the W3C and WHATWG conflict re HTML5 ...

There may be a little bit of a turf tension (I actually don't know),
but W3C does publish an HTML5 spec (https://dev.w3.org/html5/spec-LC/),
and it is kept in sync with the WHATWG specification:

    The latest stable version of the editor's draft of this specification is 
always available on the W3C CVS server and in the WHATWG Subversion repository. 
The latest editor's working copy (which may contain unfinished text in the 
process of being prepared) contains the latest draft text of this specification 
(amongst others). For more details, please see the WHATWG FAQ.

    Work on this specification is also done at the WHATWG. The W3C HTML working 
group actively pursues convergence with the WHATWG, as required by the W3C HTML 
working group charter.
        --Per Bothner
per@bothner.com   http://per.bothner.com/

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