func strings.LastIndexByte

4 uses

	strings (current package)
		strings.go#L285: func LastIndexByte(s string, c byte) int {

	crypto/x509
		verify.go#L405: 		if i := strings.LastIndexByte(domain, '.'); i == -1 {

	net/url
		url.go#L1059: 			index := strings.LastIndexByte(str, '/')
		url.go#L1202: 	colon := strings.LastIndexByte(host, ':')