wantCT: "text/html; charset=utf-8",
		},
		{
			name:   "text",
			body:   strings.Repeat("gopher", 86),
			wantCT: "text/plain; charset=utf-8",
		},
		{
			name:   "jpg",
			body:   "\xFF\xD8\xFF" + strings.Repeat("B", 1024),
			wantCT: "image/jpeg",
		},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			expectedMap := map[string]string{"_body": tt.body}

	var c03 uint8 = '\377'
	assert(c00 == 0, "c00")
	assert(c01 == 7, "c01")
	assert(c02 == 127, "c02")
	assert(c03 == 255, "c03")

	var cx0 uint8 = '\x00'
	var cx1 uint8 = '\x0f'
	var cx2 uint8 = '\xff'
	assert(cx0 == 0, "cx0")
	assert(cx1 == 15, "cx1")
	assert(cx2 == 255, "cx2")

	var cu0 uint16 = '\u1234'
	var cu1 uint32 = '\U00101234'
	assert(cu0 == 0x1234, "cu0")
	assert(cu1 == 0x101234, "cu1")

			wantCT: "text/html; charset=utf-8",
		},
		{
			name:   "text",
			body:   strings.Repeat("gopher", 86),
			wantCT: "text/plain; charset=utf-8",
		},
		{
			name:   "jpg",
			body:   "\xFF\xD8\xFF" + strings.Repeat("B", 1024),
			wantCT: "image/jpeg",
		},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			input := make([]byte, len(streamFullRequestStdin))

		{in: " A B =\n C ", want: " A B  C"}, // lax. treating LF as CRLF
		{in: "foo=\nbar", want: "foobar"},
		{in: "foo\x00bar", want: "foo", err: "quotedprintable: invalid unescaped byte 0x00 in body"},
		{in: "foo bar\xff", want: "foo bar\xff"},

		// Equal sign.
		{in: "=3D30\n", want: "=30\n"},
		{in: "=00=FF0=\n", want: "\x00\xff0"},

		// Trailing whitespace
		{in: "foo  \n", want: "foo\n"},

	testError(t, "\x80", "<input>:1:1", "invalid UTF-8 encoding", utf8.RuneError)
	testError(t, "\xff", "<input>:1:1", "invalid UTF-8 encoding", utf8.RuneError)

	testError(t, "a\x00", "<input>:1:2", "invalid character NUL", Ident)
	testError(t, "ab\x80", "<input>:1:3", "invalid UTF-8 encoding", Ident)
	testError(t, "abc\xff", "<input>:1:4", "invalid UTF-8 encoding", Ident)

				t.Errorf("#%d (%s):\ngot  %q\nwant %q", i, tc.desc, got, tc.want)
			}

		}
	}
}

func TestTruncatedStreams(t *testing.T) {
	const data = "\x00\f\x00\xf3\xffhello, world\x01\x00\x00\xff\xff"

	for i := 0; i < len(data)-1; i++ {
		r := NewReader(strings.NewReader(data[:i]))
		_, err := io.Copy(io.Discard, r)
		if err != io.ErrUnexpectedEOF {

	{"%d", 12345, "12345"},
	{"%v", 12345, "12345"},
	{"%t", true, "true"},

	// basic string
	{"%s", "abc", "abc"},
	{"%q", "abc", `"abc"`},
	{"%x", "abc", "616263"},
	{"%x", "\xff\xf0\x0f\xff", "fff00fff"},
	{"%X", "\xff\xf0\x0f\xff", "FFF00FFF"},
	{"%x", "", ""},
	{"% x", "", ""},
	{"%#x", "", ""},
	{"%# x", "", ""},
	{"%x", "xyz", "78797a"},
	{"%X", "xyz", "78797A"},
	{"% x", "xyz", "78 79 7a"},

		}
	}
}

func TestReaderTruncated(t *testing.T) {
	vectors := []struct{ input, output string }{
		{"\x00", ""},
		{"\x00\f", ""},
		{"\x00\f\x00", ""},
		{"\x00\f\x00\xf3\xff", ""},
		{"\x00\f\x00\xf3\xffhello", "hello"},
		{"\x00\f\x00\xf3\xffhello, world", "hello, world"},
		{"\x02", ""},
		{"\xf2H\xcd", "He"},
		{"\xf2H͙0a\u0084\t", "Hel\x90\x90\x90\x90\x90"},

	},
	{
		str:  "\x7F",
		wstr: []uint16{0x7F},
	},

	// 2-byte
	{
		str:  "\xC2\x80",
		wstr: []uint16{0x80},
	},
	{
		str:  "\xD7\x8A",
		wstr: []uint16{0x05CA},
	},
	{
		str:  "\xDF\xBF",
		wstr: []uint16{0x07FF},
	},

	// 3-byte
	{
		str:  "\xE0\xA0\x80",
		wstr: []uint16{0x0800},
	},
	{
		str:  "\xE2\xB0\xBC",
		wstr: []uint16{0x2C3C},
	},
	{
		str:  "\xEF\xBF\xBF",

	"\xed\xa0\x80\x80", // surrogate min
	"\xed\xbf\xbf\x80", // surrogate max

	// xx
	"\x91\x80\x80\x80",

	// s1
	"\xC2\x7F\x80\x80",
	"\xC2\xC0\x80\x80",
	"\xDF\x7F\x80\x80",
	"\xDF\xC0\x80\x80",

	// s2
	"\xE0\x9F\xBF\x80",
	"\xE0\xA0\x7F\x80",
	"\xE0\xBF\xC0\x80",
	"\xE0\xC0\x80\x80",

	// s3
	"\xE1\x7F\xBF\x80",
	"\xE1\x80\x7F\x80",
	"\xE1\xBF\xC0\x80",