switch x {
	case "a":
		return 1
	case "bb":
		return 2
	case "ccc":
		return 3
	case "dddd":
		return 4
	case "eeeee":
		return 5
	case "ffffff":
		return 6
	case "ggggggg":
		return 7
	case "hhhhhhhh":
		return 8
	default:
		return len(x)
	}
}

// Use single-byte ordered comparisons for binary searching strings.
// See issue 53333.
func mimetype(ext string) string {

	// check that existing items are truncated, and order preserved
	if e, a := []string{`299 - "aaaaa"`, `299 - "bb"`, `299 - "ccc"`, `299 - "Iñtër"`, `299 - "e"`, `299 - "fffff"`, `299 - "ggggg"`}, responseRecorder.Header()["Warning"]; !reflect.DeepEqual(e, a) {
		t.Errorf("expected\n%#v\ngot\n%#v", e, a)
	}