Thanks for the clarification.
I also understand "phantom colon", because in most cases this is the id that starts with a number.
However ... Where do I get the "proper reasons for any id failure"?
In IDErrorCheck Log are only records regarding changes made (in the example epub file it is the toc.xhtml file)
Why in log has no records about the start.xhtml file and incorrect IDs?
Information about the changes made is valuable, but the file still remains with incorrect identifiers.
EpubCheck gives even more results, because not only does it provide:
Code:
Error while parsing file 'value of attribute" id "is invalid; must be an XML name without colons'.
additionally, there is an incompatibility of references to id with "x" and original id (without "x"):
Code:
Fragment of identifier is not defined.