const unicode/utf8.MaxRune

15 uses

	unicode/utf8 (current package)
		utf8.go#L18: 	MaxRune   = '\U0010FFFF' // Maximum valid Unicode code point.
		utf8.go#L333: 	case r <= MaxRune:
		utf8.go#L353: 	case i > MaxRune, surrogateMin <= i && i <= surrogateMax:
		utf8.go#L548: 	case surrogateMax < r && r <= MaxRune:

	fmt
		format.go#L155: 	if f.sharp && u <= utf8.MaxRune && strconv.IsPrint(rune(u)) {
		format.go#L465: 	if c > utf8.MaxRune {
		format.go#L477: 	if c > utf8.MaxRune {

	github.com/evanw/esbuild/internal/js_lexer
		js_lexer.go#L2254: 						if value > utf8.MaxRune {
		js_lexer.go#L2713: 	case i > utf8.MaxRune:

	github.com/golang/protobuf/proto
		text_decode.go#L765: 		if i > utf8.MaxRune {

	golang.org/x/net/idna
		punycode.go#L85: 		if n > utf8.MaxRune || len(output) >= 1024 {

	google.golang.org/protobuf/internal/encoding/text
		decode_string.go#L122: 				if utf8.MaxRune < v || err != nil {

	strconv
		quote.go#L102: 		case r > utf8.MaxRune:
		quote.go#L321: 		if v > utf8.MaxRune {

	vendor/golang.org/x/net/idna
		punycode.go#L85: 		if n > utf8.MaxRune || len(output) >= 1024 {