Quote:
Originally Posted by KevinH
For epub3, the full identifier is actually a combination of the book identifier plus the modification date and time. Sigil automatically updates this with every save.
From the epub3 spec ...
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Thanks, also good to know, very useful to have such an elegant way to differentiate between versions in the frequent case of revisions.
I do notice they explicitly refer to "minor" changes; so it really does come back to the question of what to do when significant changes are being made. If the new file includes major changes to the version, the meta-data, the css, the internal file-structure, removing some text and adding other text, it seems to me that it would make no sense to continue to refer to the new file as merely an iteration of the original file.
Would it be possible to add the option to generate a new ID when updating the file? This would also resolve the issue of "invalid" IDs which are not accepted in their original format in epub3.