Font.ttf.walk: def of gralha-truetype@0.1.0.1
Import: import gralha-truetype@0.1.0.1/font.bend as Font
Lines 443-452 of gralha-truetype@0.1.0.1/font.bend: https://jend.leeeet.dev/read.txt?path=gralha-truetype@0.1.0.1/font.bend&start_line=443&end_line=452

import Base
import gralha-text-scan@0.1.0.1/scan.bend as U

def ttf.walk(pts: List<&2, TTPoint>, +pending: Maybe<&2, TTPoint>, +start: TTPoint) -> String:
  match pts:
    case Nil{}: ttf.walk.close(pending, start)
    case Con{TTPoint{x, y, on}, rest}:
      +px = x
      +py = y
      +r = rest
      U.branch(String, on,
        _ => ttf.walk.on(TTPoint{px, py, True{}}, pending) ++ ttf.walk(r, None{}, start),
        _ => ttf.walk.off(TTPoint{px, py, False{}}, pending) ++ ttf.walk(r, Some{TTPoint{px, py, False{}}}, start))

Uses (10):
  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=Maybe
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=String
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=String.append
  https://jend.leeeet.dev/definition.txt?path=gralha-text-scan@0.1.0.1/scan.bend&name=branch
  https://jend.leeeet.dev/definition.txt?path=gralha-truetype@0.1.0.1/font.bend&name=TTPoint
  https://jend.leeeet.dev/definition.txt?path=gralha-truetype@0.1.0.1/font.bend&name=ttf.walk.close
  https://jend.leeeet.dev/definition.txt?path=gralha-truetype@0.1.0.1/font.bend&name=ttf.walk.off
  https://jend.leeeet.dev/definition.txt?path=gralha-truetype@0.1.0.1/font.bend&name=ttf.walk.on