rb.Reset()
	n, err = rb.Write([]byte(strings.Repeat("abcd", 20)))
	if err == nil {
		t.Fatalf("expect ErrTooManyDataToWrite but got nil")
	}
	if n != 64 {
		t.Fatalf("expect write 64 bytes but got %d", n)
	}
	if rb.Length() != 64 {
		t.Fatalf("expect len 64 bytes but got %d. r.w=%d, r.r=%d", rb.Length(), rb.w, rb.r)
	}
	if rb.Free() != 0 {
		t.Fatalf("expect free 0 bytes but got %d. r.w=%d, r.r=%d", rb.Free(), rb.w, rb.r)

[files]
extend-exclude = [".git/", "docs/", "CREDITS", "go.mod", "go.sum"]
ignore-hidden = false

[default]
extend-ignore-re = [
    "Patrick Collison",
    "Copyright 2014 Unknwon",
    "[0-9A-Za-z/+=]{64}",
    "ZXJuZXQxDjAMBgNVBA-some-junk-Q4wDAYDVQQLEwVNaW5pbzEOMAwGA1UEAxMF",
    "eyJmb28iOiJiYXIifQ",
    "eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiJ9.*",
    "MIIDBTCCAe2gAwIBAgIQWHw7h.*",
    'http\.Header\{"X-Amz-Server-Side-Encryptio":',

Thus <code>3&amp;1&lt;&lt;2</code> is 4, not 0—it parses as <code>(3&amp;1)&lt;&lt;2</code>
not <code>3&amp;(1&lt;&lt;2)</code>.
Also, constants are always evaluated as 64-bit unsigned integers.
Thus <code>-2</code> is not the integer value minus two,
but the unsigned 64-bit integer with the same bit pattern.
The distinction rarely matters but
to avoid ambiguity, division or right shift where the right operand's
high bit is set is rejected.

	var b bytes.Buffer
	b.Grow(64)
	bb := b.Bytes()
	b.Write([]byte("64 bytes or fewer"))
	fmt.Printf("%q", bb[:b.Len()])
	// Output: "64 bytes or fewer"
}

func ExampleBuffer_Len() {
	var b bytes.Buffer
	b.Grow(64)
	b.Write([]byte("abcde"))
	fmt.Printf("%d", b.Len())
	// Output: 5
}

func ExampleBuffer_Next() {
	var b bytes.Buffer
	b.Grow(64)
	b.Write([]byte("abcde"))

// byte arrays sized based on width.
func NewBytePoolCap(maxSize uint64, width int, capwidth int) (bp *BytePoolCap) {
	if capwidth <= 0 {
		panic("total buffer capacity must be provided")
	}
	if capwidth < 64 {
		panic("buffer capped with smaller than 64 bytes is not supported")
	}
	if width > capwidth {
		panic("minimum buffer length cannot be > capacity of the buffer")
	}
	return &BytePoolCap{
		c:    make(chan []byte, maxSize),
		w:    width,

			crypto.MetaKeyID:             "kms-key",
			crypto.MetaDataEncryptionKey: "m-key",
		},
		encryptionType: encrypt.S3,
		err:            nil,
	}, // 4
	{
		headers:    http.Header{},
		copySource: true,
		metadata: map[string]string{
			crypto.MetaSealedKeyS3:       base64.StdEncoding.EncodeToString(make([]byte, 64)),
			crypto.MetaKeyID:             "kms-key",

$16, R16; \ MOVD $32, R17; \ MOVD $48, R18; \ MOVD $64, R19; \ LXVD2X (blk_key)(R0), VS0; \ LXVD2X (blk_key)(R16), VS1; \ LXVD2X (blk_key)(R17), VS2; \ LXVD2X (blk_key)(R18), VS3; \ LXVD2X (blk_key)(R19), VS4; \ ADD $64, R16; \ ADD $64, R17; \ ADD $64, R18; \ ADD $64, R19; \ LXVD2X (blk_key)(R16), VS5; \ LXVD2X (blk_key)(R17), VS6; \ LXVD2X (blk_key)(R18), VS7; \ LXVD2X (blk_key)(R19), VS8; \ ADD $64, R16; \ ADD $64, R17; \ ADD $64, R18; \ ADD $64, R19; \ LXVD2X (blk_key)(R16), VS9; \ LXVD2X (blk_key)(R17),...

		{"a", 'ӆ', -1},
		{"  ӆ", 'ӆ', 2},
		{"  a", 'ӆ', -1},
		{strings.Repeat("ц", 64) + "ӆ", 'ӆ', 128}, // test cutover
		{strings.Repeat("ц", 64), 'ӆ', -1},

		// 3 bytes
		{"Ꚁ", 'Ꚁ', 0},
		{"a", 'Ꚁ', -1},
		{"  Ꚁ", 'Ꚁ', 2},
		{"  a", 'Ꚁ', -1},
		{strings.Repeat("Ꙁ", 64) + "Ꚁ", 'Ꚁ', 192}, // test cutover
		{strings.Repeat("Ꙁ", 64) + "Ꚁ", '䚀', -1},  // 'Ꚁ' and '䚀' share the same last two bytes

		// 4 bytes

		return x, nil
	case int64:
		return float64(x), nil
	case string:
		f, err := strconv.ParseFloat(strings.TrimSpace(x), 64)
		if err != nil {
			return 0, errCastFailure("could not parse as float")
		}
		return f, nil
	case []byte:
		f, err := strconv.ParseFloat(strings.TrimSpace(string(x)), 64)
		if err != nil {
			return 0, errCastFailure("could not parse as float")
		}
		return f, nil
	default:

var ObjectsHistogramIntervals = [dataUsageBucketLen]objectHistogramInterval{
	{"LESS_THAN_1024_B", 0, humanize.KiByte - 1},
	{"BETWEEN_1024_B_AND_64_KB", humanize.KiByte, 64*humanize.KiByte - 1},         // not exported, for support use only
	{"BETWEEN_64_KB_AND_256_KB", 64 * humanize.KiByte, 256*humanize.KiByte - 1},   // not exported, for support use only