writer.print("\"\"");
            } else if (needsQuoting(str)) {
                writer.print('\"');
                writer.print(str);
                writer.print('\"');
            } else {
                writer.print(str);
            }
        }
        writer.println();
        return this;
    }

    private boolean needsQuoting(String str) {
        return quotablePattern.matcher(str).find();

	}{
		{"", true},
		{"ab", false},
		{"a=b", true},
		{`"ab"`, true},
		{"\a\b", true},
		{"a\tb", true},
		{"µåπ", false},
		{"a b", true},
		{"badutf8\xF6", true},
	} {
		got := needsQuoting(test.in)
		if got != test.want {
			t.Errorf("%q: got %t, want %t", test.in, got, test.want)
		}
	}

	t := reflect.TypeOf(a)
	if t != nil && t.Kind() == reflect.Slice && t.Elem().Kind() == reflect.Uint8 {
		return reflect.ValueOf(a).Bytes(), true
	}
	return nil, false
}

func needsQuoting(s string) bool {
	if len(s) == 0 {
		return true
	}
	for i := 0; i < len(s); {
		b := s[i]
		if b < utf8.RuneSelf {
			// Quote anything except a backslash that would need quoting in a

}

func (s *handleState) appendString(str string) {
	if s.h.json {
		s.buf.WriteByte('"')
		*s.buf = appendEscapedJSONString(*s.buf, str)
		s.buf.WriteByte('"')
	} else {
		// text
		if needsQuoting(str) {
			*s.buf = strconv.AppendQuote(*s.buf, str)
		} else {
			s.buf.WriteString(str)
		}
	}
}

func (s *handleState) appendValue(v Value) {
	defer func() {
		if r := recover(); r != nil {