const unicode.MaxASCII

6 uses

	unicode (current package)
		letter.go#L12: 	MaxASCII        = '\u007F'     // maximum ASCII value.
		letter.go#L251: 	if r <= MaxASCII {
		letter.go#L262: 	if r <= MaxASCII {
		letter.go#L273: 	if r <= MaxASCII {
		tables.go#L7510: var asciiFold = [MaxASCII + 1]uint16{

	crypto/x509
		x509.go#L1681: 		if r > unicode.MaxASCII {