anchor.diff:    // - - - - - - - - - - - - - - - - - - - - - - - -
   
     const isTrueFile = (diff) => {
  -    const filename = diff.filename;
  +    const filename = diffFilename(diff);
       return !['stdout','stderr','status'].includes(filename);
     };
   
  
positive.code:   const sortedDiffs = (diffs) => {
      let filenames = [];
      $.each(diffs, (_, diff) => {
        filenames.push(diff.filename);
      });
      // ensure filenames appear in the same order as kata/edit page
      const sorted = cd.sortedFilenames(filenames);
      const diffFor = (filename) => {
        for (let i = 0; i !== diffs.length; i++) {
          if (diffs[i].filename === filename) {
            return diffs[i];
          }
        }
  
negative.code:     if (!inDiffMode()) { return '&nbsp;'; }
      const div = $('<div>', {
        'class': `diff-${cssName}-line-count`,
        'data-filename': diffFilename(diff)
      });
      const lineCount = diff[`${cssName}_line_count`];
      div.append(nonZero(lineCount));
  