}
	defer RemoveAll(startPath)

	err = Chdir(startPath)
	if err != nil {
		t.Fatalf("Could not chdir %s: %s", startPath, err)
	}

	// Removing paths with over 4096 chars commonly fails
	for i := 0; i < 41; i++ {
		name := strings.Repeat("a", 100)

		err = Mkdir(name, 0755)
		if err != nil {
			t.Fatalf("Could not mkdir %s: %s", name, err)
		}

		err = Chdir(name)

	0x2f800,
	0x2fa1d,
}

var notletterTest = []rune{
	0x20,
	0x35,
	0x375,
	0x619,
	0x700,
	0x1885,
	0xfffe,
	0x1ffff,
	0x10ffff,
}

// Contains all the special cased Latin-1 chars.
var spaceTest = []rune{
	0x09,
	0x0a,
	0x0b,
	0x0c,
	0x0d,
	0x20,
	0x85,
	0xA0,
	0x2000,
	0x3000,
}

type caseT struct {
	cas     int
	in, out rune
}

		}
	}
	return -1
}

func TestIndexRandom(t *testing.T) {
	const chars = "abcdefghijklmnopqrstuvwxyz0123456789"
	for times := 0; times < 10; times++ {
		for strLen := 5 + rand.Intn(5); strLen < 140; strLen += 10 { // Arbitrary
			s1 := make([]byte, strLen)
			for i := range s1 {
				s1[i] = chars[rand.Intn(len(chars))]
			}
			s := string(s1)
			for i := 0; i < 50; i++ {
				begin := rand.Intn(len(s) + 1)

		if err != nil {
			return err
		}
		defer c.Close()

		b := []byte(data)
		n, err := c.Write(b)
		if err != nil {
			return err
		}
		if n != len(b) {
			return fmt.Errorf(`Only %d chars of string "%s" sent`, n, data)
		}
		return nil
	}

	if envaddr := os.Getenv("GOTEST_DIAL_ADDR"); envaddr != "" {
		// In child process.
		c, err := Dial("tcp", envaddr)
		if err != nil {
			t.Fatal(err)

	if s == "" {
		return false
	}
	for _, c := range s {
		switch {
		case strings.ContainsRune("!#$%&()*+-./:;<=>?@[]^_{|}~ ", c):
			// Backslash and quote chars are reserved, but
			// otherwise any punctuation chars are allowed
			// in a tag name.
		case !unicode.IsLetter(c) && !unicode.IsDigit(c):
			return false
		}
	}
	return true
}

// unicode width of the text.
func (b *Writer) endEscape() {
	switch b.endChar {
	case Escape:
		b.updateWidth()
		if b.flags&StripEscape == 0 {
			b.cell.width -= 2 // don't count the Escape chars
		}
	case '>': // tag of zero width
	case ';':
		b.cell.width++ // entity, count as one rune
	}
	b.pos = len(b.buf)
	b.endChar = 0
}

// of an input buffer of length n.
func (enc *Encoding) EncodedLen(n int) int {
	if enc.padChar == NoPadding {
		return n/3*4 + (n%3*8+5)/6 // minimum # chars at 6 bits per char
	}
	return (n + 2) / 3 * 4 // minimum # 4-char quanta, 3 bytes each
}

/*
 * Decoder
 */

type CorruptInputError int64

func (e CorruptInputError) Error() string {

	// Re-using some addrParser methods which support obsolete text, i.e. non-printable ASCII
	p := addrParser{date, nil}
	p.skipSpace()

	// RFC 5322: zone = (FWS ( "+" / "-" ) 4DIGIT) / obs-zone
	// zone length is always 5 chars unless obsolete (obs-zone)
	if ind := strings.IndexAny(p.s, "+-"); ind != -1 && len(p.s) >= ind+5 {
		date = p.s[:ind+5]
		p.s = p.s[ind+5:]
	} else {
		ind := strings.Index(p.s, "T")
		if ind == 0 {

			if id.Name == name {
				return id
			}
		}
	}
	return nil
}

var (
	noteMarker    = `([A-Z][A-Z]+)\(([^)]+)\):?`                // MARKER(uid), MARKER at least 2 chars, uid at least 1 char
	noteMarkerRx  = lazyregexp.New(`^[ \t]*` + noteMarker)      // MARKER(uid) at text start
	noteCommentRx = lazyregexp.New(`^/[/*][ \t]*` + noteMarker) // MARKER(uid) at comment start
)

		},
		// Invalid ASCII in date.
		{
			"Fri, 21 Nov 1997 ù 09:55:06 -0600    \r\n (thisisa(valid)cfws)   \t ",
			time.Date(1997, 11, 21, 9, 55, 6, 0, time.FixedZone("", -6*60*60)),
			false,
		},
		// CFWS chars () in date.
		{
			"Fri, 21 Nov () 1997 09:55:06 -0600    \r\n (thisisa(valid)cfws)   \t ",
			time.Date(1997, 11, 21, 9, 55, 6, 0, time.FixedZone("", -6*60*60)),
			false,
		},