LyXHTML doc doesn't pass validation

[Lorenzo Bertini]

Il 23/03/22 19:03, Thibaut Cuvelier ha scritto:
> On Wed, 23 Mar 2022 at 18:43, Lorenzo Bertini 
> <lorenzobertini97 at gmail.com <mailto:lorenzobertini97 at gmail.com>> wrote:
> 
>     Running a very simple LyXHTML doc (a section with a few paragraphs)
>     against this validator https://validator.w3.org/check
>     <https://validator.w3.org/check> reports some
>     errors, I don't really know if we care or not:
> 
>     1. value of attribute "dir" cannot be "auto"; must be one of "ltr",
>     "rtl"
>     2. element "section" undefined
> 
>     Is this a problem? I just wanted to check if I could use the <figure>
>     tag but its not part of the specification.
> 
> 
> What version of HTML are you checking against? There are some glimpses 
> of HTML5 in the current output. For instance, dir="auto" and section are 
> perfectly legal in HTML5 
> (https://developer.mozilla.org/en-US/docs/Web/HTML/Global_attributes/dir 
> <https://developer.mozilla.org/en-US/docs/Web/HTML/Global_attributes/dir> and 
> https://developer.mozilla.org/en-US/docs/Web/HTML/Element/section 
> <https://developer.mozilla.org/en-US/docs/Web/HTML/Element/section>)

I checked XHTML 1.0, as it should be what LyX outputs. I was about to 
check up some of the xhtml_output code to maybe add `figure` 
environments, but since its XHTML there's very little allowed.