Romain Deltour

the canonical URL of the site is https://www.w3.org/publishing/epubcheck/. That's why the links use `/publishing/epubcheck/` as a prefix. But due to technical limitations, redirection from the `github.io` to `w3.org` domain cannot...

I'm not sure I fully understand the above. * If a script dynamically adds an `audio` element referring to remote audio, is that allowed? * an alternative non-core media type...

Also, I'm not familiar with the state of custom elements in EPUB, so this may not be so relevant, but these restrictions disallow any remote audio/video referenced from custom elements...

EPUBCheck uses its own bespoke CSS parsing code. I'll look into how it can be changed to accept that syntax. It's definitely a bug (false-positive).

This PR needs to be rebased, reviewed, and tests ported to the new test framework. Assigning it to me for v4.2.6 (tentatively).

Yes it makes sense. Thanks for the PR! 👍 I'll try to review shortly.

I updated the schemas in #1211, to be released in v4.2.5. Note that a missing `alt` attribute is usually an error on `img` elements, except in [some very specific cases](https://html.spec.whatwg.org/multipage/images.html#guidance-for-conformance-checkers)....

Thanks for the report. I'll try to look into this for the next milestone.

_From [[email protected]](https://code.google.com/u/116904555323702666006/) on October 11, 2012 14:06:19_ The schema for SVG 1.1 referenced by the EPUB 3 spec and used by EPUBCheck is known to be incomplete. It is correct...

Not sure this is still an issue. The `External DTD entities are not allowed` sound legit in EPUB 3. Needs further review of the original issue.