escapeHTML bool
}

type encoderFunc func(e *encodeState, v reflect.Value, opts encOpts)

var encoderCache sync.Map // map[reflect.Type]encoderFunc

func valueEncoder(v reflect.Value) encoderFunc {
	if !v.IsValid() {
		return invalidValueEncoder
	}
	return typeEncoder(v.Type())
}

func typeEncoder(t reflect.Type) encoderFunc {
	if fi, ok := encoderCache.Load(t); ok {

		if c := in[i]; c < utf8.RuneSelf {
			if 'a' <= c && c <= 'z' {
				c -= 'a' - 'A'
			}
			out = append(out, c)
			i++
			continue
		}
		// Handle multi-byte Unicode.
		r, n := utf8.DecodeRune(in[i:])
		out = utf8.AppendRune(out, foldRune(r))
		i += n
	}
	return out
}

// foldRune is returns the smallest rune for all runes in the same fold set.
func foldRune(r rune) rune {
	for {

	a[3] = 0xe6
	a[4] = 0x97
	a[5] = 0xa5
	a[6] = 0xe6
	a[7] = 0x9c
	a[8] = 0xac
	a[9] = 0xe8
	a[10] = 0xaa
	a[11] = 0x9e
	for w, i, j := 0, 0, 0; i < L; i += w {
		var r rune
		r, w = utf8.DecodeRune(a[i:L])
		if w == 0 {
			panic("zero width in bytes")
		}
		if r != chars[j] {
			panic("wrong value from bytes")
		}
		j++
	}

	if in.bytes == nil {
		if !isHangulString(in.str[p:]) {
			return 0
		}
		r, size = utf8.DecodeRuneInString(in.str[p:])
	} else {
		if !isHangul(in.bytes[p:]) {
			return 0
		}
		r, size = utf8.DecodeRune(in.bytes[p:])
	}
	if size != hangulUTF8Size {
		return 0
	}
	return r

	if in.bytes == nil {
		if !isHangulString(in.str[p:]) {
			return 0
		}
		r, size = utf8.DecodeRuneInString(in.str[p:])
	} else {
		if !isHangul(in.bytes[p:]) {
			return 0
		}
		r, size = utf8.DecodeRune(in.bytes[p:])
	}
	if size != hangulUTF8Size {
		return 0
	}
	return r

		case r < surr1, surr3 <= r:
			// normal rune
			ar = rune(r)
		case surr1 <= r && r < surr2 && i+1 < len(s) &&
			surr2 <= s[i+1] && s[i+1] < surr3:
			// valid surrogate sequence
			ar = utf16.DecodeRune(rune(r), rune(s[i+1]))
			i++
		default:
			// WTF-8 fallback.
			// This only handles the 3-byte case of utf8.AppendRune,
			// as surrogates always fall in that case.
			ar = rune(r)
			if ar > utf8.MaxRune {

func (e *watchEncoder) Encode(event watch.Event) error {
	encodeFunc := func(obj runtime.Object, w io.Writer) error {
		return e.doEncode(obj, event, w)
	}
	if co, ok := event.Object.(runtime.CacheableObject); ok {
		return co.CacheEncode(e.identifier(event.Type), encodeFunc, e.framer)
	}
	return encodeFunc(event.Object, e.framer)
}

	return msg, nil
}

// isValidRecordText reports whether text is syntactically valid record text.
func isValidRecordText(text []byte) bool {
	var last rune
	for i := 0; i < len(text); {
		r, size := utf8.DecodeRune(text[i:])
		if r < 0x20 && r != '\n' || r == utf8.RuneError && size == 1 || last == '\n' && r == '\n' {
			return false
		}
		i += size
		last = r
	}
	if last != '\n' {
		return false
	}

			},
			input:    []any{"zzzzz"},
			expected: []any{"00000"},
		},
		{
			name: "string_with_letter",
			fn: func(e CorpusEntry) error {
				b := e.Values[0].(string)
				r, _ := utf8.DecodeRune([]byte(b))
				if unicode.IsLetter(r) {
					return fmt.Errorf("bad %v", e.Values[0])
				}
				return nil
			},
			input:    []any{"ZZZZZ"},
			expected: []any{"A"},
		},
	}

		{"Decode", Func, 0},
		{"DecodeRune", Func, 0},
		{"Encode", Func, 0},
		{"EncodeRune", Func, 0},
		{"IsSurrogate", Func, 0},
	},
	"unicode/utf8": {
		{"AppendRune", Func, 18},
		{"DecodeLastRune", Func, 0},
		{"DecodeLastRuneInString", Func, 0},
		{"DecodeRune", Func, 0},
		{"DecodeRuneInString", Func, 0},
		{"EncodeRune", Func, 0},
		{"FullRune", Func, 0},