- status_active or status_stopped - depending on torrent state
- status_seeding - if the torrent download is complete and it's on seed
- group: xxx - transmission's torrent group name (if any)
- comment: xxx - comment data from torrent
Currently spotlight comments are not set on directories, also there's no way to enable/disable this feature.
PS: forum attachments don't seem to like gz, txt and patch extensions, so here's link to patch on gist.