Parse.head.start: def of yaml-for-bend@0.1.1.0
Import: import yaml-for-bend@0.1.1.0/parse.bend as Parse
Lines 356-361 of yaml-for-bend@0.1.1.0/parse.bend: https://jend.leeeet.dev/read.txt?path=yaml-for-bend@0.1.1.0/parse.bend&start_line=356&end_line=361

import Base
import yaml-for-bend@0.1.1.0/token.bend as T

def head.start(ts: List<&2, T.Token>) -> T.Mark:
  match ts:
    case Nil{}:
      T.Mark{0n, 0n, 0n}
    case Con{t, rest}:
      tok.start(t)

Uses (4):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  https://jend.leeeet.dev/definition.txt?path=yaml-for-bend@0.1.1.0/parse.bend&name=tok.start
  https://jend.leeeet.dev/definition.txt?path=yaml-for-bend@0.1.1.0/token.bend&name=Mark
  https://jend.leeeet.dev/definition.txt?path=yaml-for-bend@0.1.1.0/token.bend&name=Token