MURATA Makoto
Have any publishers complained? If no publishers complain, I do not want to fix EPUB3.
This is a very old and annoying issue to me. The original XML people tried to solve it, but it still bites us. Allowing [external DTD subsets](https://www.w3.org/TR/2008/REC-xml-20081126/#dt-doctype) might open a...
> SMIL also uses DTD-s with entities. Do we allow explicit SMIL files in an EPUB? Media Overlay uses SMIL documents. But MO defines a very small subset of SMIL,...
@iherman > It is exactly the same problem as with mine with SVG which started this thread :-( But this problem is theoretical, since nobody would like to create SMIL...
Should this issue be addressed by publishing errata to EPUB 3.2 or by the next version of EPUB 3 (by the upcoming WG)?
@iherman You are not the only person confused by the definition of DTDs. A DTD is a pair of an external DTD subset and an internal DTD subset. Laurent's example...
@iherman I agree with your first point. Do not understand your second.
Does the simple type xsd:language address this problem?
It would be nice if meaningless tags such as en-US-POSIX are detected. But if some programming (as oppose to schema hacking) is required, I am not sure if this is...
I think that SVG validation should not be lifted, since maintenance of EPUB assets containing invalid SVG fragments is likely to be annoying.