anchor.diff: -// @dart = 2.9
   /// This file contains code to generate scanner and parser message
   /// based on the information in pkg/front_end/messages.yaml.
   ///
  
positive.code:     Token token = scanString(parserSource).tokens;
      while (!token.isEof) {
        if (token.isIdentifier) {
          String fastaErrorCode;
          String lexeme = token.lexeme;
          if (lexeme.length > 7) {
            if (lexeme.startsWith('message')) {
  
negative.code:   }
  
    void generateFastaAnalyzerErrorCodeList() {
      final sorted = List<Map?>.filled(translatedEntries.length, null);
      for (var entry in translatedEntries) {
        var index = entry['index'];
        if (index is int && index >= 1 && index <= sorted.length) {
  