re.Match(long)     // triggers standard matcher
	re.Match(long[:1]) // triggers backtracker
}

func BenchmarkFind(b *testing.B) {
	b.StopTimer()
	re := MustCompile("a+b+")
	wantSubs := "aaabb"
	s := []byte("acbb" + wantSubs + "dd")
	b.StartTimer()
	b.ReportAllocs()
	for i := 0; i < b.N; i++ {
		subs := re.Find(s)
		if string(subs) != wantSubs {
			b.Fatalf("Find(%q) = %q; want %q", s, subs, wantSubs)
		}
	}
}

	{"TrimRight", "abba", "", "abba"},
	{"TrimRight", "", "123", ""},
	{"TrimRight", "", "", ""},
	{"TrimRight", "☺\xc0", "☺", "☺\xc0"},
	{"TrimPrefix", "aabb", "a", "abb"},
	{"TrimPrefix", "aabb", "b", "aabb"},
	{"TrimSuffix", "aabb", "a", "aabb"},
	{"TrimSuffix", "aabb", "b", "aab"},
}

func TestTrim(t *testing.T) {
	for _, tc := range trimTests {
		name := tc.f
		var f func(string, string) string
		switch name {

	{"TrimRight", "abba", "", "abba"},
	{"TrimRight", "", "123", ""},
	{"TrimRight", "", "", ""},
	{"TrimRight", "☺\xc0", "☺", "☺\xc0"},
	{"TrimPrefix", "aabb", "a", "abb"},
	{"TrimPrefix", "aabb", "b", "aabb"},
	{"TrimSuffix", "aabb", "a", "aabb"},
	{"TrimSuffix", "aabb", "b", "aab"},
}

type TrimNilTest struct {
	f   string
	in  []byte
	arg string
	out []byte
}

        then:
        included file('ac')
        included file('13')
        excluded file('a')
        excluded file('1')
        excluded file('c')
        excluded file('3')
        excluded file('acb')
        excluded file('acd')
        excluded file('132')
        excluded file('132')

        when:
        patternSet = new PatternSet().copyFrom(patternSet)
        then:
        included file('ac')

                "1d6226f6-dacc-42a9-bd88-7aab1f59df74",
                "0948ed55-c25e-4319-9801-5f817bac09b5",
                "2fd52f5e-b856-47ad-9e58-45c1d0ba437b",
                "6c325bd0-ac6b-4391-a5c5-caa160972fa2",
                "d213f6be-f56b-42d2-abda-4300742e0add",
                "efaae115-cc21-4b2e-a150-fb4e0d807736",
                "30f872e8-9cb5-4b22-b65c-6819ca7a14ba",

0CB4          ; disallowed                             # NA   <reserved-0CB4>
0CB5..0CB9    ; valid                                  # 1.1  KANNADA LETTER VA..KANNADA LETTER HA
0CBA..0CBB    ; disallowed                             # NA   <reserved-0CBA>..<reserved-0CBB>
0CBC..0CBD    ; valid                                  # 4.0  KANNADA SIGN NUKTA..KANNADA SIGN AVAGRAHA

  # Equations only supported for XLA operations.
  @parameterized.parameters(
      testing.parameter_combinations([{
          'equation': ('abc,acd->abd', 'abcd,aecd->acbe'),
          'shape_unknown': (True, False),
          'activation_fn': (None, nn_ops.relu, nn_ops.relu6),
          'has_bias': (True, False),
          'use_kernel': (True, False),
      }])
  )

	{obj.ARET, C_NONE, C_NONE, C_NONE, C_ZREG, C_NONE, 6, 4, 0, 0, 0},
	{obj.ARET, C_NONE, C_NONE, C_NONE, C_ZOREG, C_NONE, 6, 4, 0, 0, 0},
	{ABEQ, C_NONE, C_NONE, C_NONE, C_SBRA, C_NONE, 7, 4, 0, BRANCH19BITS, 0},
	{ACBZ, C_ZREG, C_NONE, C_NONE, C_SBRA, C_NONE, 39, 4, 0, BRANCH19BITS, 0},
	{ATBZ, C_VCON, C_ZREG, C_NONE, C_SBRA, C_NONE, 40, 4, 0, BRANCH14BITS, 0},
	{AERET, C_NONE, C_NONE, C_NONE, C_NONE, C_NONE, 41, 4, 0, 0, 0},

                "sourceIPAddress": "192.168.56.192"
            },
            "responseElements": {
                "x-amz-request-id": "15C3249451E12784",
                "x-minio-deployment-id": "751a8ba6-acb2-42f6-a297-4cdf1cf1fa4f",
                "x-minio-origin-endpoint": "http://192.168.97.83:9000"
            },
            "s3": {
                "s3SchemaVersion": "1.0",

	{ABTSW, ybtl, Pq, opBytes{0xba, 05, 0xab}},
	{ABTW, ybtl, Pq, opBytes{0xba, 04, 0xa3}},
	{ABYTE, ybyte, Px, opBytes{1}},
	{obj.ACALL, ycall, Px, opBytes{0xff, 02, 0xff, 0x15, 0xe8}},
	{ACBW, ynone, Pe, opBytes{0x98}},
	{ACDQ, ynone, Px, opBytes{0x99}},
	{ACDQE, ynone, Pw, opBytes{0x98}},
	{ACLAC, ynone, Pm, opBytes{01, 0xca}},
	{ACLC, ynone, Px, opBytes{0xf8}},
	{ACLD, ynone, Px, opBytes{0xfc}},