Quote:
Originally Posted by anthony.burton4
I couldn't make it clearer that I am trying to apply multiple meta-data changes concurrently to a book or books.
You are answering about applying a SINGLE change to multiple books - which I am well aware of how to do.
And yes - you can edit multiple fields using the batch update tabs 1 & 2, but all of the changes I am referring to are 3rd tab changes - I use a lot of regular expression edits, and these seem to only be able to apply one at a time.
I am aware that there are various mechanisms that do not make it to the UI that can be used with calibre, so I am hoping one of these can provide a way.
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You will need to use the CLI. (see the Help pages)
for that, you will probably need the book Id(s) to control what books get applied.
Sorry, I am having problems wrapping my head around why you would need to do this

so many times, that the various features can't be used.
In the Tags browser, there is 'Manage...' which allows renaming, deletion of tags,publishers,series that affects the whole library. (IMHO very useful for
normalizing your data)