// MatchLanguage reports the matched tag obtained from language.MatchStrings for // the Matcher of the DefaultCatalog. func MatchLanguage(preferred ...string) language.Tag { … } var DefaultCatalog … var defaultCatalog … // SetString calls SetString on the initial default Catalog. func SetString(tag language.Tag, key string, msg string) error { … } // Set calls Set on the initial default Catalog. func Set(tag language.Tag, key string, msg ...catalog.Message) error { … }