sO leftArrowVerbose(LASClassLoader lasClassLoader, S script) {
  new GazelleV_LeftArrowScriptParser parser;
  parser.lasClassLoader(lasClassLoader);
  ret leftArrowVerbose(parser, script);
}

sO leftArrowVerbose(GazelleV_LeftArrowScriptParser parser default new, S script) {
  if (parser.lasClassLoader() != null)
    parser.lasClassLoader().rememberClassBytes(true);

  enableScaffolding(parser);
  parser.allowTheWorld();
  var parsedScript = parser.parse(script);
  parser.printFunctionDefs(parsedScript);
  print(parsedScript);
  print("leftArrowVerbose:\n" + GazelleV_LeftArrowScript.indentedScriptStruct(parsedScript));
  new FlexibleVarContext ctx;
  var result = parsedScript.get(ctx);
  ctx.printMe();
  ret result;
}

Began life as a copy of #1033990