Re: texi to epub

[Per Bothner]

On 12/18/21 14:20, Patrice Dumas wrote:
> I tried that with the https://validator.w3.org/, also using .xhtml as
> extension as it seems that it is what makes the w3c validator consider
> that it is XML, with and without <?xml?>, and I get:
>      Schema Error: XML document with no namespace; cannot determine any schema 
> to use for validation.
>
> ...
>
> Also, what could I use for offline validation?  The w3c-markup-validator
> package does not seem to handle HTML5, and the vnu 
> https://validator.github.io/validator/
> validator does not seem to be packages in debian.

I don't know if people even use old-style XML/HTML validators these days,
or if there are good free validators that match modern html.  Anything
that uses a DTD would seem to have limited usefulness.

The W3C Markup Validator (https://github.com/w3c/markup-validator/)
suggests the NU Validator (https://github.com/validator/validator/) for HTML5.
Maybe try the online version first: https://validator.w3.org/nu/
If it seems helpful you can download and build a local version.
--
        --Per Bothner
per@bothner.com   http://per.bothner.com/