Matt Garrish

You should be able to change the severity level of messages using the -c option and a custom message file. That would let you push errors down to usage messages,...

> but doesn't error level changing clear all levels of that category? Depends on what you mean by category. Some message codes are catch-alls, in which case you would change...

Ya, I don't think it's helpful for epubcheck to enforce what properties are allowed in the a11y vocabulary. It's not like the package document vocabularies in the core spec that...

> However unlikely this occurrence would be, it would violate the letter of our charter.😒 Ya, it's just the unlikelihood that these prefixes have ever been, or will ever be,...

The prefixes are now in the deprecated features section, as discussed in the last call, so merging this now.

This sounds like the EPUB author problem all over again. We used author for the producer of the ebook and all it caused was grief. Perhaps there's a more neutral...