const unicode/utf8.rune1Max

4 uses

	unicode/utf8 (current package)
		utf8.go#L41: 	rune1Max = 1<<7 - 1
		utf8.go#L331: 	case r <= rune1Max:
		utf8.go#L350: 	if uint32(r) <= rune1Max {
		utf8.go#L392: 	if uint32(r) <= rune1Max {