anchor.diff:  import 'dart:convert';
   import 'dart:io';
   
  +import 'package:analyzer/src/util/glob.dart';
   import 'package:path/path.dart' as path;
   
   /**
  
positive.code:   CommitDelta getCommitDiff(String srcCommit, String dstCommit) {
      // Consider --find-renames instead of --no-renames if rename information is
      // desired.
      ProcessResult result = _run(['diff', '--raw', '--no-abbrev', '--no-renames',
          '-z', srcCommit, dstCommit]);
      return new CommitDelta._(this, result.stdout);
    }
  
  
negative.code: }
  
  /**
   * Representation of a single diff hunk.
   */
  class DiffHunk {
  