Scan.emit.span: def of yaml-for-bend@0.1.1.0
Import: import yaml-for-bend@0.1.1.0/scan.bend as Scan
Lines 390-394 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=390&end_line=394

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

# A token from +start+ to +end+.
def emit.span(st: Sc, tok: T.Tok, start: T.Mark, end: T.Mark) -> Sc:
  match st:
    case Sc{cur, ind, inds, flow, allowed, tab, keys, out, n, max}:
      Sc{cur, ind, inds, flow, allowed, tab, keys, T.Token{tok, start, end} <> out, 1n+n, max}

Uses (6):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat
  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/token.bend&name=Mark
  https://jend.leeeet.dev/definition.txt?path=yaml-for-bend@0.1.1.0/token.bend&name=Tok
  https://jend.leeeet.dev/definition.txt?path=yaml-for-bend@0.1.1.0/token.bend&name=Token