// The MatchString finds best matches for such strings:
//
//	handler(w http.ResponseWriter, r *http.Request) {
//	    lang, _ := r.Cookie("lang")
//	    accept := r.Header.Get("Accept-Language")
//	    tag, _ := language.MatchStrings(matcher, lang.String(), accept)
//
//	    // tag should now be used for the initialization of any
//	    // locale-specific service.
//	}
//
// The Matcher's Match method can be used to match Tags directly.
//

// Making it a concrete type allows MatchStrings to be a method, which will
// improve its discoverability.

// MatchStrings parses and matches the given strings until one of them matches
// the language in the Matcher. A string may be an Accept-Language header as
// handled by ParseAcceptLanguage. The default language is returned if no
// other language matched.
func MatchStrings(m Matcher, lang ...string) (tag Tag, index int) {