// Authorization = "AWS" + " " + AWSAccessKeyId + ":" + Signature
	authFields := strings.Split(r.Header.Get(xhttp.Authorization), " ")
	if len(authFields) != 2 {
		return auth.Credentials{}, false, ErrMissingFields
	}

	// Then will be splitting on ":", this will separate `AWSAccessKeyId` and `Signature` string.
	keySignFields := strings.Split(strings.TrimSpace(authFields[1]), ":")
	if len(keySignFields) != 2 {

	if !leadingPercent {
		res = strings.TrimPrefix(text, pat)
		if len(text) == len(res) {
			return "", false
		}
	} else {
		parts := strings.SplitN(text, pat, 2)
		if len(parts) == 1 {
			return "", false
		}
		res = parts[1]
	}
	return res, true
}

func dropRune(text string) (res string, ok bool) {
	r := []rune(text)
	if len(r) == 0 {

	creds := strings.SplitN(strings.TrimSpace(credElement), "=", 2)
	if len(creds) != 2 {
		return ch, ErrMissingFields
	}
	if creds[0] != "Credential" {
		return ch, ErrMissingCredTag
	}
	credElements := strings.Split(strings.TrimRight(strings.TrimSpace(creds[1]), SlashSeparator), SlashSeparator)
	if len(credElements) < 5 {

	buf := debug.Stack()
	// runtime stack of go routines will be listed with 2 blank spaces between each of them, so split on "\n\n" .
	for g := range strings.SplitSeq(string(buf), "\n\n") {
		// Again split on a new line, the first line of the second half contains the info about the go routine.
		sl := strings.SplitN(g, "\n", 2)
		if len(sl) != 2 {
			continue
		}
		stack := strings.TrimSpace(sl[1])

		port          int
		publicIP      string
		portRange     string
		tlsPrivateKey string
		tlsPublicCert string
		forceTLS      bool
	)

	var err error
	for _, arg := range args {
		tokens := strings.SplitN(arg, "=", 2)
		if len(tokens) != 2 {
			logger.Fatal(fmt.Errorf("invalid arguments passed to --ftp=%s", arg), "unable to start FTP server")
		}
		switch tokens[0] {
		case "address":

	// the ARN would not match any configured ARNs in the server.
	if ps[4] != "" {
		err = errors.New("invalid ARN - unsupported account-id field")
		return arn, err
	}

	res := strings.SplitN(ps[5], "/", 2)
	if len(res) != 2 {
		err = errors.New("invalid ARN - resource does not contain a \"/\"")
		return arn, err
	}

	if res[0] != string(arnResourceTypeRole) {

	return genSplit(s, sep, len(sep), n)
}

// Split slices s into all subslices separated by sep and returns a slice of
// the subslices between those separators.
// If sep is empty, Split splits after each UTF-8 sequence.
// It is equivalent to SplitN with a count of -1.
//
// To split around the first instance of a separator, see [Cut].
func Split(s, sep []byte) [][]byte { return genSplit(s, sep, 0, -1) }

	// U+0068 'h'
	// U+0065 'e'
	// U+0072 'r'
}

func ExampleSplit() {
	fmt.Printf("%q\n", bytes.Split([]byte("a,b,c"), []byte(",")))
	fmt.Printf("%q\n", bytes.Split([]byte("a man a plan a canal panama"), []byte("a ")))
	fmt.Printf("%q\n", bytes.Split([]byte(" xyz "), []byte("")))
	fmt.Printf("%q\n", bytes.Split([]byte(""), []byte("Bernardo O'Higgins")))
	// Output:
	// ["a" "b" "c"]
	// ["" "man " "plan " "canal panama"]

)

// ParseSecretKey parses s as <key-id>:<base64> and returns a
// KMS that uses s as builtin single key as KMS implementation.
func ParseSecretKey(s string) (*KMS, error) {
	v := strings.SplitN(s, ":", 2)
	if len(v) != 2 {
		return nil, errors.New("kms: invalid secret key format")
	}

	keyID, b64Key := v[0], v[1]
	key, err := base64.StdEncoding.DecodeString(b64Key)
	if err != nil {
		return nil, err

	tgt = Default
	if len(s) == 0 {
		return subSys, inputs, tgt, Errorf("input arguments cannot be empty")
	}
	inputs = strings.SplitN(s, KvSpaceSeparator, 2)

	subSystemValue := strings.SplitN(inputs[0], SubSystemSeparator, 2)
	subSys = subSystemValue[0]
	if !SubSystems.Contains(subSys) {
		return subSys, inputs, tgt, Errorf("unknown sub-system %s", s)
	}