Scan.key.put: def of yaml-for-bend@0.1.1.0
Import: import yaml-for-bend@0.1.1.0/scan.bend as Scan
Lines 503-507 of yaml-for-bend@0.1.1.0/scan.bend: https://jend.leeeet.dev/read.txt?path=yaml-for-bend@0.1.1.0/scan.bend&start_line=503&end_line=507

import Base

def key.put(st: Sc, required: Bool) -> Sc:
  match st:
    case Sc{+cur, ind, inds, flow, allowed, +tab, keys, out, +n, max}:
      +rest = List.drop(&2, SKey, keys, 1n)
      Sc{cur, ind, inds, flow, allowed, tab, SKey{True{}, required, n, cur.at(cur), tab, low.with(low.of(rest), True{}, cur.at(cur))} <> rest, out, n, max}

Uses (8):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List.drop
  https://jend.leeeet.dev/definition.txt?path=yaml-for-bend@0.1.1.0/scan.bend&name=SKey
  https://jend.leeeet.dev/definition.txt?path=yaml-for-bend@0.1.1.0/scan.bend&name=Sc
  https://jend.leeeet.dev/definition.txt?path=yaml-for-bend@0.1.1.0/scan.bend&name=cur.at
  https://jend.leeeet.dev/definition.txt?path=yaml-for-bend@0.1.1.0/scan.bend&name=low.of
  https://jend.leeeet.dev/definition.txt?path=yaml-for-bend@0.1.1.0/scan.bend&name=low.with