Hi Petr.
I believe (and excuse me if I'm wrong) there is a confusion between the two items...
*) XBMC (and other software) support multi-episodes
TV files. XBMC can tell if a file is multi-episode in two ways:
1) If the episode is named appropriately... As an example: "showname - S01E01E02 - blah.avi"
2) If the nfo file associated with that video file has multiple <episodedetails> sections as noted in ticket 382 which is refered to in the link you noted.
*) XBMC supports Collections for
movies as well
1) I believe the new Eden (v11) release has heuristics which identify upon adding files in a library if the movie being imported a part of a movie series
2) If the nfo file associated with the movie has a "<SET>" element, then it will be considered a part of the "Movie Collection/Set" of all movies with that same value in the <SET> element.
Both these are important functions which I wish Serviio supported. As it stands:
----> Multi-part TV shows result in the 'visual appearance' to the user that episodes are missing.
----> Movie Sets allow for simpler tree navigation, and less clutter. They greatly reduce clutter (e.g. think 1 entery for "Rocky" instead of 13 [or whatever the series is up to).