def opens
import ezx@1.11.0.0/src/tool/plan.bend as Planimport Base
import ezx@1.11.0.0/src/tool/world.bend as TW
396# the questions of these still open
397def opens(+world: TW.World, asks: List<&2, TW.Ask>) -> List<&2, TW.Ask>:
398 match asks:
399 case []:
400 []
401 case +h <> t:
402 opens.step(open(world, h), h, opens(world, t))