Rule option SUB:N tells a rule which sub-reading it should operate on and which it should test as target. (..) Positive numbers refer to sub-readings starting from the primary and going deeper, while negative numbers start from the last sub-reading and go towards the primary. (...)
Context option /N tests the N'th sub-reading of the currently active reading, where N follows the same rules as for SUB:N above. The /N must be last in the context position. If N is * then the test will search the main reading and all sub-readings.
Thia looks great. But I am not able to make it work.
REMOVE:SgPar Pl + Par IF (-1 Num + Sg)(0 Sg + Par); # (a)
REMOVE:SgParSub Pl + Par IF (-1/1 Num + Sg)(0 Sg + Par); # (b)
but no. (a) works for "kahta minuuttai" (without subreading) but (b) is ignored by the input.
I have tried both -1/*, -1/-1. Admittedly, using subreadings when referring to *context* is not covered in the documentation (not in the chapter Rule Option SUB:N anyway), but I thought exchanging "0/" with any position number seemed a natural extension. And we do want to refer to subreadings also in the context.
So: What do I miss?