anchor.diff:    } else {
       _packageRoot = _workingDirectoryUri.resolveUri(new Uri.file(packageRoot));
     }
  -  _logResolution('# Package root: $packageRoot -> $_packageRoot');
  +  if (_logBuiltin) {
  +    _print('# Package root: $packageRoot -> $_packageRoot');
  +  }
   }
   
   
  
positive.code:     // resolve it against the working directory.
      _entryPointScript = _workingDirectoryUri.resolve(scriptName);
    }
    _logResolution('# Resolved entry point to: $_entryPointScript');
    return _entryPointScript.toString();
  }
  
  const _DART_EXT = 'dart-ext:';
  
  String _resolveUri(String base, String userString) {
    _logResolution('# Resolving: $userString from $base');
    var baseUri = Uri.parse(base);
    if (userString.startsWith(_DART_EXT)) {
      var uri = userString.substring(_DART_EXT.length);
  
negative.code:   cwd = _sanitizeWindowsPath(cwd);
    cwd = _enforceTrailingSlash(cwd);
    _workingDirectoryUri = new Uri(scheme: 'file', path: cwd);
    if (_logBuiltin) {
      _print('# Working Directory: $cwd');
    }
  }
  
  
  