Cannot get indexFormat to do anything

[simoncn]

When indexFormat is used for Artist, the Artist.indexFormat string is used to produce a single composite formatted value for all Artist values (single or multiple) tagged on each item. This composite value is used to find the indexArtwork image for the Artist index entry.

When indexFormat is not used for Artist, the tagged Artist values (single or multiple) for each item are used to create one or more entries in the Artist index. For each of these Artist index entries, the tagged Artist value is used to find the indexArtwork image for the Artist index entry.

In both the above cases, the tagged Artist values (single or multiple) for each item are used to create one or more entries in the All Artists index. For each of these All Artists index entries, the tagged Artist value is used to find the indexArtwork image for the All Artists index entry.

This means you can use Artist.indexFormat to change what appears in the Artist index and you can use the All Artists index to find the indexArtwork image(s) for the original unformatted artist name(s).

The Artist index is treated specially because it is a synthetic index containing a combination of Artist and AlbumArtist information. This makes it possible to remove the restriction on indexFormat for this index only.