Quote:
Originally Posted by Mechatherium
Perhaps if I know what "string matching the regular expression "[^\s]+" meant. Does it mean the ids must begin with a space?
|
It literally means that ids mustn't contain spaces. IIRC, this is a generic EPUBCheck error message that is also displayed if there are other problems with the id, for example, if the id contains non-ASCII characters other than hyphens, underscores, colons or periods.
What kind of id values did you use?