code: def makeOfficialGlyphOrder(font, glyphOrder=None):
      if glyphOrder is None:
          glyphOrder = getattr(font, "glyphOrder", ())
      names = set(font.keys())
      order = []
      if ".notdef" in names:
          names.remove(".notdef")
          order.append(".notdef")
      for name in glyphOrder:
          if name not in names:
              continue
          names.remove(name)
          order.append(name)
      order.extend(sorted(names))
      return order