Quote:
Originally Posted by DiapDealer
Because an epub HAS to have an id. There's a big difference between automatically providing something that didn't exist (and must), and automatically changing something that already did. The former can do no harm. The latter could cause issues. Think of someone converting a book (their book. one that they're going to upload and sell) that already had an isbn number for an id. Would they even notice that their registered isbn had been wiped out in favor of a uuid?
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Quote:
Originally Posted by DNSB
AFAIR, unless you de-obfuscate the fonts before changing the identifier, you can also run into issues with font obfuscation which uses the dc:identifier.
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Ha okay, yes I see what you (both) mean now. Thanks for explaining. I do think it would be good to include the option (even if it's opt-in rather than opt-out) because I also think there is a case to made that a uuid should not stay the same if significant changes have been made to the file.