Plan.open.of: def of ezx@1.11.0.0
Import: import ezx@1.11.0.0/src/tool/plan.bend as Plan
Lines 376-382 of ezx@1.11.0.0/src/tool/plan.bend: https://jend.leeeet.dev/read.txt?path=ezx@1.11.0.0/src/tool/plan.bend&start_line=376&end_line=382

import Base
import ezx@1.11.0.0/src/tool/world.bend as TW

# whether a question is still open
def open.of(got: TW.Heard) -> Bool:
  match got:
    case TW.Open{}:
      True{}
    case TW.Heard{_a}:
      False{}

Uses (2):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=ezx@1.11.0.0/src/tool/world.bend&name=Heard