public static String helpImplodePathname(String filename) {
    { String extension = Stella.fileExtension(filename);

      if (extension == null) {
        return (Stella.maybeTruncateFilename(filename));
      }
      else {
        return (Stella.maybeTruncateFilename(Stella.fileBaseName(filename)) + extension);
      }
    }
  }