f.Add([]byte(`${FOO}`))
	f.Add([]byte(`\${FOO}`))
	f.Add([]byte(`$(/bin/false)`))
	f.Add([]byte(`\$(/bin/false)`))
	f.Add([]byte(`$((0))`))
	f.Add([]byte(`\$((0))`))
	f.Add([]byte(`unescaped space`))
	f.Add([]byte(`escaped\ space`))
	f.Add([]byte(`"unterminated quote`))
	f.Add([]byte(`'unterminated quote`))
	f.Add([]byte(`unterminated escape\`))
	f.Add([]byte(`"quote with unterminated escape\`))

import (
	"internal/goarch"
	"unsafe"
)

// RegArgs is a struct that has space for each argument
// and return value register on the current architecture.
//
// Assembly code knows the layout of the first two fields
// of RegArgs.
//
// RegArgs also contains additional space to hold pointers
// when it may not be safe to keep them only in the integer
// register space otherwise.
type RegArgs struct {

	t := *s
	for n := 0; n < max; n++ {
		if t.spaces > 0 {
			t.spaces--
			continue
		}
		if t.i >= len(t.text) && eolOK {
			continue
		}
		if t.i < len(t.text) {
			switch t.text[t.i] {
			case '\t':
				t.spaces = 4 - (t.i-t.tab)&3 - 1
				t.i++
				t.tab = t.i
				continue
			case ' ':
				t.i++
				continue
			}
		}
		if n >= min {
			break
		}

func ExampleRawMessage_unmarshal() {
	type Color struct {
		Space string
		Point json.RawMessage // delay parsing until we know the color space
	}
	type RGB struct {
		R uint8
		G uint8
		B uint8
	}
	type YCbCr struct {
		Y  uint8
		Cb int8
		Cr int8
	}

	var j = []byte(`[
	{"Space": "YCbCr", "Point": {"Y": 255, "Cb": 0, "Cr": -10}},
	{"Space": "RGB",   "Point": {"R": 98, "G": 218, "B": 255}}
]`)

		var tooBig uint64 = math.MaxUint64
		mustPanic(func() { _ = unsafe.Slice(new(byte), tooBig) })

		// size overflows address space
		mustPanic(func() { _ = unsafe.Slice(new(uint64), maxUintptr/8) })
		mustPanic(func() { _ = unsafe.Slice(new(uint64), maxUintptr/8+1) })

		// sliced memory overflows address space
		last := (*byte)(unsafe.Pointer(^uintptr(0)))
		_ = unsafe.Slice(last, 1)
		mustPanic(func() { _ = unsafe.Slice(last, 2) })
	}

				Port:    9411,
			},
			valid: true,
		},
		{
			name: "zipkin service with invalid namespace",
			config: &meshconfig.MeshConfig_ExtensionProvider_ZipkinTracingProvider{
				Service: "name/space/zipkin.istio-system",
				Port:    9411,
			},
			valid: false,
		},
		{
			name: "zipkin service with port",
			config: &meshconfig.MeshConfig_ExtensionProvider_ZipkinTracingProvider{

	if bytes.ContainsAny(s, "#?") {
		c.urlPart = urlPartQueryOrFrag
	} else if len(s) != eatWhiteSpace(s, 0) && c.urlPart == urlPartNone {
		// HTML5 uses "Valid URL potentially surrounded by spaces" for
		// attrs: https://www.w3.org/TR/html5/index.html#attributes-1
		c.urlPart = urlPartPreQuery
	}
	return c, len(s)
}

// tJS is the context transition function for the JS state.

			expr:        `format.datetime().validate("2021-01-01T00:00:00Z")`,
			expectValue: types.OptionalNone,
		},
		{
			name:        "dns1123Label",
			expr:        `format.dns1123Label().validate("contains a space")`,

	`[:lower:]`:   {+1, code11},
	`[:^lower:]`:  {-1, code11},
	`[:print:]`:   {+1, code12},
	`[:^print:]`:  {-1, code12},
	`[:punct:]`:   {+1, code13},
	`[:^punct:]`:  {-1, code13},
	`[:space:]`:   {+1, code14},
	`[:^space:]`:  {-1, code14},
	`[:upper:]`:   {+1, code15},
	`[:^upper:]`:  {-1, code15},
	`[:word:]`:    {+1, code16},
	`[:^word:]`:   {-1, code16},
	`[:xdigit:]`:  {+1, code17},
	`[:^xdigit:]`: {-1, code17},

	// the call and return paths of a Go function.
	call, ret abiSeq

	// These fields describe the stack space allocated
	// for the call. stackCallArgsSize is the amount of space
	// reserved for arguments but not return values. retOffset
	// is the offset at which return values begin, and
	// spill is the size in bytes of additional space reserved
	// to spill argument registers into in case of preemption in
	// reflectcall's stack frame.