Quote:
Originally Posted by un_pogaz
What I reproach Sigil for is the unilateral decision to delete non-indexed files, without warning or consultation of the user, because the risk of completely breaking an ePub is important.
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If the files in the archive don't match up to the files in content.opf, the epub is already completely broken so it's a bit late to talk about the risk of completely breaking an epub. Very rarely—if ever—does Garbage In produce Gospel Out.
A couple of quotes:
From the epub3 standard:
All Publication Resources must be referenced from the manifest, regardless of whether they are included in the EPUB Container or made available remotely.
and from Mukli Krisztián's epub boilerplate:
The content.opf file is the most important part of the EPUB package, because it defines the structure of the eBook and the metadata.
Manifest Section – This section is a list of all the content files, media, fonts, and stylesheets used in the eBook. The files can be listed in any order. However, you should not include a file in the Manifest Section that is not in the EPUB package. Also, you should not have undeclared files in the EPUB package that have not been declared in the Manifest Section.
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