langSet.add(normalizeLang);
                        }
                    }
                }
            }
            if (langSet.size() > 1 && langSet.contains(Constants.ALL_LANGUAGES)) {
                return new String[] { Constants.ALL_LANGUAGES };
            }
            langSet.remove(Constants.ALL_LANGUAGES);
            return langSet.toArray(new String[langSet.size()]);
        }

	}
	return i, nil
}

func searchUint(imap []uint16, key uint16) int {
	return sort.Search(len(imap), func(i int) bool {
		return imap[i] >= key
	})
}

type Language uint16

// getLangID returns the langID of s if s is a canonical subtag
// or langUnknown if s is not a canonical subtag.
func getLangID(s []byte) (Language, error) {
	if len(s) == 2 {
		return getLangISO2(s)
	}
	return getLangISO3(s)
}