* {@code escape(s.substring(0, n)) + escape(s.substring(n))} for arbitrary {@code n}. This is
 * because of the possibility of splitting a surrogate pair. The only case in which it is safe to
 * escape strings and concatenate the results is if you can rule out this possibility, either by
 * splitting an existing long string into short strings adaptively around {@linkplain

 * }</pre>
 *
 * <p>If you wish to avoid this, you should either prepend or append the size of each chunk. Keep in
 * mind that when dealing with char sequences, the encoded form of two concatenated char sequences
 * is not equivalent to the concatenation of their encoded form. Therefore, {@link
 * #putString(CharSequence, Charset)} should only be used consistently with <i>complete</i>
 * sequences and not broken into chunks.

	if g, w := len(certDirs), len(rootPEMs); g != w {
		t.Fatalf("Failed sanity check: len(certsDir)=%d is not equal to len(rootsPEMS)=%d", g, w)
	}

	// Now finally concatenate them with a colon.
	colonConcatCertDirs := strings.Join(certDirs, ":")
	os.Setenv(certDirEnv, colonConcatCertDirs)
	gotPool, err := loadSystemRoots()
	if err != nil {
		t.Fatalf("Failed to load system roots: %v", err)

                                               TF_ShapeHandle* result,
                                               TF_Status* status) {
  auto* cc_ctx = reinterpret_cast<InferenceContext*>(ctx);
  Status s = cc_ctx->Concatenate(*reinterpret_cast<ShapeHandle*>(first),
                                 *reinterpret_cast<ShapeHandle*>(second),
                                 reinterpret_cast<ShapeHandle*>(result));
  Set_TF_Status_from_Status(status, s);

 * }</pre>
 *
 * <p>If you wish to avoid this, you should either prepend or append the size of each chunk. Keep in
 * mind that when dealing with char sequences, the encoded form of two concatenated char sequences
 * is not equivalent to the concatenation of their encoded form. Therefore, {@link
 * #putString(CharSequence, Charset)} should only be used consistently with <i>complete</i>
 * sequences and not broken into chunks.

    ByteSource source = ByteSource.wrap(new byte[] {0, 1, 2, 3});
    Iterable<ByteSource> cycle = Iterables.cycle(ImmutableList.of(source));
    ByteSource concatenated = ByteSource.concat(cycle);

    byte[] expected = {0, 1, 2, 3, 0, 1, 2, 3};
    assertArrayEquals(expected, concatenated.slice(0, 8).read());
  }

  private static final ByteSource BROKEN_CLOSE_SOURCE =
      new TestByteSource(new byte[10], CLOSE_THROWS);

		input: mustDecodeHex("" +
			"425a68393141592653594eece83600000251800010400006449080200031064c" +
			"4101a7a9a580bb9431f8bb9229c28482776741b0",
		),
		output: []byte("hello world\n"),
	}, {
		desc: "concatenated files",
		input: mustDecodeHex("" +
			"425a68393141592653594eece83600000251800010400006449080200031064c" +
			"4101a7a9a580bb9431f8bb9229c28482776741b0425a68393141592653594eec" +

package okhttp3.tls.internal.der

import java.math.BigInteger
import okio.Buffer
import okio.BufferedSink
import okio.ByteString

internal class DerWriter(sink: BufferedSink) {
  /** A stack of buffers that will be concatenated once we know the length of each. */
  private val stack = mutableListOf(sink)

  /** Type hints scoped to the call stack, manipulated with [pushTypeHint] and [popTypeHint]. */

  %15 = mhlo.add %13, %4 : tensor<32x32xi64>
  %16 = mhlo.select %14, %15, %13 : tensor<32x32xi1>, tensor<32x32xi64>
  %17 = mhlo.reshape %16 : (tensor<32x32xi64>) -> tensor<32x32x1xi64>
  %18 = "mhlo.concatenate"(%12, %17) <{dimension = 2 : i64}> : (tensor<32x32x1xi64>, tensor<32x32x1xi64>) -> tensor<32x32x2xi64>

                rhs = IntLiteral [indexes: 29..30, line/column: 3/9..3/10, file: test] (9)
            )""".trimIndent()
        parse(code).assert(expected)
    }

    @Test
    fun `accidentally concatenated lines in a series of assignments`() {
        val code = """
            val a = 1
            val b = 2 val c = 3
            val d = 4
        """.trimIndent()

        val expected = """