const golang.org/x/text/language.No

10 uses

	golang.org/x/text/language (current package)
		language.go#L213: 	No    Confidence = iota // full confidence that there was no match
		language.go#L258: 	return Base{0}, No
		language.go#L280: 	sc, c := language.Script(_Zzzz), No
		language.go#L317: 	return Region{_ZZ}, No // TODO: return world instead of undetermined?
		match.go#L39: 		if tag, index, conf := m.Match(desired...); conf != No {
		match.go#L362: 	return No
		match.go#L514: 	if best.conf <= No {
		match.go#L516: 			return nil, want[0].tag(), No
		match.go#L518: 		return nil, language.Tag{}, No

	golang.org/x/text/internal
		match.go#L66: 	return language.Und, 0, language.No