anchor.diff:        | listMarkerTest(4)
         | atxHeader
         | openFence
  -      | rawHtml
  +      | rawHtmlParagraphStopTest
         | (skipNonindentChars > (
           char('>')
           | (oneOf('+-*') > whitespaceChar)
  
positive.code:     }
  
      Match match = rawHtmlTest67.matchAsPrefix(lineRes.value);
      if (match != null /* && _allowedTags.contains(match.group(1).toLowerCase())*/) {
        content += lineRes.value + '\n';
        var position = lineRes.position;
        do {
  
negative.code:     }
  
      return fail.run(s, pos);
    });
  
  
  