[JimmXinu]

Originally Posted by Courge

I gather the "category" metadata in a custom column and I would like to simplify the metadata while avoiding multiple identical values.

For example, some fanfics are tagged as:

• The Silmarillion and other histories of Middle-Earth - J. R. R. Tolkien
• The Lord of the Rings - All Media Types
• The Hobbit - All Media Types
• TOLKIEN J. R. R. - Works & Related Fandoms

I set the personal.ini file to:

add_to_replace_metadata:
 category=>The Silmarillion and other histories of Middle-Earth - J. R. R. Tolkien=>Tolkien
 category=>The Lord of the Rings - All Media Types=>Tolkien
 category=>The Hobbit - All Media Types=>Tolkien
 category=>TOLKIEN J. R. R. - Works \& Related Fandoms=>Tolkien

Which gives me in the "Category" custom column: "Tolkien, Tolkien, Tolkien, Tolkien".

Is it possible to either pick up (and replace) only the first tag in "category" or remove identical replacements?

Both FFF and Calibre should be de-duping (and ordering)--assuming you are using a 'Like Tags' type column.

If you have keep_in_order_category:true that will disable both de-duping and ordering in FFF.