// own keys and assigning certain semantic meaning to the associated values.
	// For example, sparse file support in PAX is implemented using keys
	// defined by the GNU manual (e.g., "GNU.sparse.map").
	//
	// Reference:
	//	http://pubs.opengroup.org/onlinepubs/009695399/utilities/pax.html
	FormatPAX

	// FormatGNU represents the GNU header format.
	//

pkg expvar, method (*Int) String() string
pkg expvar, method (*Map) Add(string, int64)
pkg expvar, method (*Map) AddFloat(string, float64)
pkg expvar, method (*Map) Do(func(KeyValue))
pkg expvar, method (*Map) Get(string) Var
pkg expvar, method (*Map) Init() *Map
pkg expvar, method (*Map) Set(string, Var)
pkg expvar, method (*Map) String() string
pkg expvar, method (*String) Set(string)

pkg syscall (freebsd-riscv64), const MAP_ALIGNMENT_SHIFT ideal-int #53466
pkg syscall (freebsd-riscv64), const MAP_ANON = 4096 #53466
pkg syscall (freebsd-riscv64), const MAP_ANON ideal-int #53466
pkg syscall (freebsd-riscv64), const MAP_ANONYMOUS = 4096 #53466
pkg syscall (freebsd-riscv64), const MAP_ANONYMOUS ideal-int #53466
pkg syscall (freebsd-riscv64), const MAP_COPY = 2 #53466

	// 1.  Grow. This triggers two reallocations in Map.
	maxRune := func(r rune) rune { return unicode.MaxRune }
	m := Map(maxRune, []byte(a))
	expect := tenRunes(unicode.MaxRune)
	if string(m) != expect {
		t.Errorf("growing: expected %q got %q", expect, m)
	}

	// 2. Shrink
	minRune := func(r rune) rune { return 'a' }
	m = Map(minRune, []byte(tenRunes(unicode.MaxRune)))
	expect = a

pkg go/types, type ArgumentError struct, Index int
pkg go/types, type Config struct, Context *Context
pkg go/types, type Config struct, GoVersion string
pkg go/types, type Context struct
pkg go/types, type Info struct, Instances map[*ast.Ident]Instance
pkg go/types, type Instance struct
pkg go/types, type Instance struct, Type Type
pkg go/types, type Instance struct, TypeArgs *TypeList
pkg go/types, type Term struct
pkg go/types, type TypeList struct

pkg net/http, const StatusUnavailableForLegalReasons ideal-int
pkg net/http, type Transport struct, ExpectContinueTimeout time.Duration
pkg net/http, type Transport struct, TLSNextProto map[string]func(string, *tls.Conn) RoundTripper
pkg net/http, var ErrSkipAltProtocol error
pkg net/http/httptest, method (*ResponseRecorder) WriteString(string) (int, error)
pkg net/http/httputil, type BufferPool interface { Get, Put }

	input         []lex.Token
	inputPos      int
	pendingLabels []string // Labels to attach to next instruction.
	labels        map[string]*obj.Prog
	toPatch       []Patch
	addr          []obj.Addr
	arch          *arch.Arch
	ctxt          *obj.Link
	firstProg     *obj.Prog
	lastProg      *obj.Prog
	dataAddr      map[string]int64 // Most recent address for DATA for this symbol.
	isJump        bool             // Instruction being assembled is a jump.

pkg syscall (darwin-386), const MAP_ANON = 4096
pkg syscall (darwin-386), const MAP_COPY = 2
pkg syscall (darwin-386), const MAP_FILE = 0
pkg syscall (darwin-386), const MAP_FIXED = 16
pkg syscall (darwin-386), const MAP_HASSEMAPHORE = 512
pkg syscall (darwin-386), const MAP_JIT = 2048
pkg syscall (darwin-386), const MAP_NOCACHE = 1024
pkg syscall (darwin-386), const MAP_NOEXTEND = 256

	rot13 := func(r rune) rune {
		switch {
		case r >= 'A' && r <= 'Z':
			return 'A' + (r-'A'+13)%26
		case r >= 'a' && r <= 'z':
			return 'a' + (r-'a'+13)%26
		}
		return r
	}
	fmt.Printf("%s\n", bytes.Map(rot13, []byte("'Twas brillig and the slithy gopher...")))
	// Output:
	// 'Gjnf oevyyvt naq gur fyvgul tbcure...
}

func ExampleReader_Len() {
	fmt.Println(bytes.NewReader([]byte("Hi!")).Len())

	}, {
		header:  &Header{Xattrs: map[string]string{"foo": "bar"}},
		paxHdrs: map[string]string{paxSchilyXattr + "foo": "bar"},
		formats: FormatPAX,
	}, {
		header:  &Header{Xattrs: map[string]string{"foo": "bar"}, Format: FormatGNU},
		paxHdrs: map[string]string{paxSchilyXattr + "foo": "bar"},
		formats: FormatUnknown,
	}, {
		header:  &Header{Xattrs: map[string]string{"用戶名": "\x00hello"}},