anchor.diff: -library markdown.tool.common_mark_stats;
  -
   import 'dart:collection';
   import 'dart:convert';
   import 'dart:io';
  
positive.code:   return true;
  }
  
  Map<String, List<CommonMarkTestCase>> loadCommonMarkSections() {
    var testFile = new File(p.join(_currentDir, _commonMarkTests));
    var testsJson = testFile.readAsStringSync();
  
  
negative.code:   var raw = options['raw'];
    var verbose = options['verbose'];
  
    var sections = _loadCommonMarkSections();
  
    var scores = new SplayTreeMap<String, SplayTreeMap<int, bool>>(
        compareAsciiLowerCaseNatural);
  