Plan.clean: def of ezx@1.11.0.0
Import: import ezx@1.11.0.0/src/lock/plan.bend as Plan
Lines 327-334 of ezx@1.11.0.0/src/lock/plan.bend: https://jend.leeeet.dev/read.txt?path=ezx@1.11.0.0/src/lock/plan.bend&start_line=327&end_line=334

import Base

# whether a key or value can be written as it is
def clean(text: String) -> Bool:
  match text:
    case SNil{}:
      True{}
    case SCon{+h, t}:
      +rest = clean(t)
      Bool.and(Bool.not(char.bad(h)), rest)

Uses (5):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool.and
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool.not
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=String
  https://jend.leeeet.dev/definition.txt?path=ezx@1.11.0.0/src/lock/plan.bend&name=char.bad