Replace genre with entire canonical branch using lastgrenre

[shooftie]

I use lastgenre but mainly for organising existing genre tags. I therefore have two questions/feature requests:

1. Prevent lastgrenre from even making a call to Last.fm for a genre at all i.e. only work on existing tags

It might be a little odd for a plugin who's raison d'etre is to seek out missing genres, but hey-ho. The reason is that I would like to speed up the process and also to prevent any unwanted Last.fm genres from nuking what I already have; genres are extremely subjective.

I appreciate that this is likely a feature request.

2. replace a genre with the entire canonical branch for said genre

A typical genre might look something like: Electronic; Techno; Acid Techno.

My canonical tree might look like:

- Electronic:
  - Techno:
    - Acid Techno 

Some tracks might only have Acid Techno as a genre, in which case I would like lastgenre to replace it with Electronic; Techno; Acid Techno.

Likewise, if a track only has Techno then I would like it to be replaced with Electronic; Techno;

This might already be possible, although I have everything I can think of without success.

[faevourite]

For the second request, it should already work if you use lowercase names in your tree file. i.e.

- electronic:
    - techno:
        - acid techno

Then you can combine that with title_case: yes (default) to have the genre title-cased before writing.

[shooftie]

Thank you for responding. Apologies for the delayed reply; my current workflow has moved to GitLab and I am not logging in to Github all that often.

it should already work if you use lowercase names in your tree file

Is it literally just the case that is causing the issues!? I'm going to take what you've said and have another go at creating a minimal reproduction from which I can gather some results/logs.

Thanks again!

[shooftie]

OK, I thought I was going crazy but this feature was implemented a week or so after I started this thread. The key to it all was cleanup_existing!

Minimal setup

config.yml

lastgenre:
    auto: yes
    count: 5 # exceeds max depth of canonical lists
    force: no # `cleanup_existing` won't work without this set to no
    keep_existing: yes # ensure that existing are not nuked
    whitelist: '/config/whitelist.txt'
    canonical: '/config/canonical.txt'
    title_case: true
    cleanup_existing: true

whitelist.txt

electronic
techno
acid techno

canonical.txt

- electronic
    - techno
        - acid techno

Thanks again @faevourite !