How to identify, rip and flag forced subs from BD

[Chetwood]

Although MKV is my container of choice when it comes to backing up my BDs, including forced subs can be tricky sometimes. That's not only because of the way flags are done in MKVs (see here, here and here) which also can be ignored by standalones but because identifying and ripping can be difficult due to the various ways forced subs can be authored on BDs:

1. a general track that has several items which are flagged as forced (e.g. Avatar)
   
   
2. a separate track that only has forced subs which are flagged as forced (e.g. Olympus Has Fallen)
   
   
3. a separate track that has only forced subs none of which are flagged as forced (e.g. Kill Bill Vol. 1)
   
   
4. a general track where some items are flagged as forced by navigational commands (e.g. Van Helsing)
   
   
5. ?

To make sure none of the flagged items which might be anywhere inside a stream are missed, the entire movie has to be parsed. Still, in some cases this is not enough as the forced subs are turned on by navigational commands (from the index.bdmv?) which most ripping tools seem to ignore.

Is there any tool/way to identify 100% of forced subs?