func unicode/utf8.ValidRune

6 uses

	unicode/utf8 (current package)
		utf8.go#L575: func ValidRune(r rune) bool {

	bytes
		bytes.go#L173: 	case !utf8.ValidRune(r):

	strconv
		quote.go#L60: 	if !utf8.ValidRune(r) {
		quote.go#L106: 		case !utf8.ValidRune(r):
		quote.go#L331: 		if !utf8.ValidRune(v) {

	strings
		strings.go#L136: 	case !utf8.ValidRune(r):