// for a k-rune slice.
func ReplaceAll(s, old, new []byte) []byte {
	return Replace(s, old, new, -1)
}

// EqualFold reports whether s and t, interpreted as UTF-8 strings,
// are equal under simple Unicode case-folding, which is a more general
// form of case-insensitivity.
func EqualFold(s, t []byte) bool {
	// ASCII fast path
	i := 0
	for n := min(len(s), len(t)); i < n; i++ {
		sr := s[i]
		tr := t[i]

		reader    io.Reader = r.Body
		s3Err     APIErrorCode
		putObject = objectAPI.PutObject
	)

	var opts untarOptions
	opts.ignoreDirs = strings.EqualFold(r.Header.Get(xhttp.MinIOSnowballIgnoreDirs), "true")
	opts.ignoreErrs = strings.EqualFold(r.Header.Get(xhttp.MinIOSnowballIgnoreErrors), "true")
	opts.prefixAll = r.Header.Get(xhttp.MinIOSnowballPrefix)
	if opts.prefixAll != "" {

		return toObjectErr(errMethodNotAllowed, bucket, object)
	}
	// verify that the object queued for transition is identical to that on disk.
	if !opts.MTime.Equal(fi.ModTime) || !strings.EqualFold(opts.Transition.ETag, extractETag(fi.Metadata)) {
		return toObjectErr(errFileNotFound, bucket, object)
	}
	// if object already transitioned, return
	if fi.TransitionStatus == lifecycle.TransitionComplete {