const unicode/utf8.rune3Max

4 uses

	unicode/utf8 (current package)
		utf8.go#L43: 	rune3Max = 1<<16 - 1
		utf8.go#L331: 	case r <= rune3Max:
		utf8.go#L356: 	case i <= rune3Max:
		utf8.go#L391: 	case i <= rune3Max: