Instead of using a white list and an ignore list, i’d rather have one config option for both:
Strict matching:
+rock
-disco
Wildcards:
+*jazz*
-*
In this case, it would accept any genre containing jazz, ignore anything else.
Or:
-*jazz*
+*
Which would be equivalent to:
-*jazz*
Meaning: allow everything, but ignore genres containing jazz.
It could even support regexps:
+/^jazz/
-/^.*disco$/
Not sure whether it should be a separate file or just a normal option stored in usual config ini (perhaps with possibility to import/export to text file).
If the idea is to filter out tags/genres that are embedded into files, it has to allow whatever user wants, and cover as much cases as possible.
The current option ignore_genres, in this regard, was badly designed.
@ZoeB: please create a ticket for this if none exists already and link it here.