Quote:
Originally Posted by ChooChoo
If there is an isbn in the metadata already does this plugin override just the isbn or the whole field or nothing?
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{identifiers} is the destination
in Calibre. It can only have 1 of any single type. It does not modify the book (directly).
So if your Library has no ISBN for that book, it gains one.
If it does, it will replace. You can configure it
to Prompt before a change.
My personal opinion is to only run many plugins against books that NEED the data.

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Code:
identifiers:isbn:false
BTW The
Quality Check Plugin has a metadata ISBN check that finds malformed (fails check digit) ISBN