func bytes.LastIndexByte

3 uses

	bytes (current package)
		bytes.go#L110: 		return LastIndexByte(s, sep[0])
		bytes.go#L141: func LastIndexByte(s []byte, c byte) int {

	mime/multipart
		multipart.go#L247: 	i := bytes.LastIndexByte(buf, nlDashBoundary[0])