def head.start
import yaml-for-bend@0.1.1.0/parse.bend as Parseimport Base
import yaml-for-bend@0.1.1.0/token.bend as T
356def head.start(ts: List<&2, T.Token>) -> T.Mark:
357 match ts:
358 case Nil{}:
359 T.Mark{0n, 0n, 0n}
360 case Con{t, rest}:
361 tok.start(t)