def open
import ezx@1.11.0.0/src/doctor/plan.bend as Planimport Base
import ezx@1.11.0.0/src/doctor/world.bend as DW
912# the questions of a list that have no answer yet
913def open(asks: List<&2, DW.Ask>, +rs: List<&2, DW.Reply>) -> List<&2, DW.Ask>:
914 match asks:
915 case []:
916 []
917 case +h <> t:
918 open.put(DW.heard(rs, h), h, open(t, rs))