Plan.unanswered: def of bolt@1.27.0.0
Import: import bolt@1.27.0.0/src/lint/plan.bend as Plan
Lines 321-328 of bolt@1.27.0.0/src/lint/plan.bend: https://jend.leeeet.dev/read.txt?path=bolt@1.27.0.0/src/lint/plan.bend&start_line=321&end_line=328

import Base
import bolt@1.27.0.0/src/lint/world.bend as W

# the questions a World does not answer yet
def unanswered(asks: List<&2, W.Ask>, +world: W.World) -> List<&2, W.Ask>:
  match asks:
    case Nil{}:
      Nil{}
    case Con{+a, rest}:
      +more = unanswered(rest, world)
      Bool.pick(List<&2, W.Ask>, W.answered(world, a), more, a <> more)

Uses (5):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool.pick
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  https://jend.leeeet.dev/definition.txt?path=bolt@1.27.0.0/src/lint/world.bend&name=Ask
  https://jend.leeeet.dev/definition.txt?path=bolt@1.27.0.0/src/lint/world.bend&name=World
  https://jend.leeeet.dev/definition.txt?path=bolt@1.27.0.0/src/lint/world.bend&name=answered