List<String> lines = output.readLines()
        int buildSuccessfulLineIndex = lines.indexOf("BUILD SUCCESSFUL in 0s")
        assert buildSuccessfulLineIndex != -1

        List<String> normalized = lines.subList(0, buildSuccessfulLineIndex).grep { !it.isEmpty() } + "" + lines.subList(buildSuccessfulLineIndex, lines.size())
        return normalized.join("\n")
    }

		return c1.lines < c2.lines
	}
	decreasingLines := func(c1, c2 *Change) bool {
		return c1.lines > c2.lines // Note: > orders downwards.
	}

	// Simple use: Sort by user.
	OrderedBy(user).Sort(changes)
	fmt.Println("By user:", changes)

	// More examples.
	OrderedBy(user, increasingLines).Sort(changes)
	fmt.Println("By user,<lines:", changes)

    }
    lineBuf.finish();
    return lines;
  }

  private static List<String> readUsingJava(String input, int chunk) throws IOException {
    BufferedReader r = new BufferedReader(getChunkedReader(input, chunk));
    List<String> lines = Lists.newArrayList();
    String line;
    while ((line = r.readLine()) != null) {
      lines.add(line);
    }
    r.close();
    return lines;
  }

    }
    lineBuf.finish();
    return lines;
  }

  private static List<String> readUsingJava(String input, int chunk) throws IOException {
    BufferedReader r = new BufferedReader(getChunkedReader(input, chunk));
    List<String> lines = Lists.newArrayList();
    String line;
    while ((line = r.readLine()) != null) {
      lines.add(line);
    }
    r.close();
    return lines;
  }

		for {
			err := lrdr.Next(&le)
			if err == io.EOF {
				break
			}
			must(err)
			fl := Line{le.File.Name, le.Line}
			lines[fl] = lines[fl] || le.IsStmt
		}
	}

	nonStmtLines := []Line{}
	for line, isstmt := range lines {
		if !isstmt {
			nonStmtLines = append(nonStmtLines, line)
		}
	}

	var m int
	if runtime.GOARCH == "amd64" {
		m = 1 // > 99% obtained on amd64, no backsliding

		name     string
		expected int
	}{
		{
			name:     "write no line",
			expected: 0,
		},
		{
			name:     "write one line",
			expected: 1,
		},
		{
			name:     "write 100 lines",
			expected: 100,
		},
		{
			name:     "write 1000 lines",
			expected: 1000,
		},
		{
			name:     "write 10000 lines",
			expected: 10000,
		},
		{
			name:     "write 100000 lines",

	}
	return bytes.TrimSpace(out), nil
}

func getLines(cmd *exec.Cmd) [][]byte {
	out := output(cmd)
	lines := bytes.Split(out, []byte("\n"))
	// Skip the empty line at the end.
	if len(lines[len(lines)-1]) == 0 {
		lines = lines[:len(lines)-1]
	}
	return lines
}

func output(cmd *exec.Cmd) []byte {
	out, err := cmd.Output()
	if err != nil {
		fmt.Println(strings.Join(cmd.Args, "\n"))

More text.

      Blocks
    can

  have
    blank
      lines.
-- gofmt --
Text.

	A tab-indented
	(no, not eight-space indented)
	code block and haiku.

More text.

	One space
	 is
	  enough
	   to
	    start
	     a
	      block.

More text.

	    Blocks
	  can

	have
	  blank
	    lines.
-- markdown --
Text.

	A tab-indented

        failure.assertHasLineNumber(lines + 3)
        failure.assertHasCause("There was an error while evaluating a component metadata rule for org.test:projectA:1.0.")
        failure.assertHasCause("No signature of method: WrongRule.foo() is applicable for argument types: () values: []")
    }

    def "produces sensible error for invalid component metadata rule" () {
        def lines = buildFile.readLines().size()
        buildFile << """

  private final char[] buf = cbuf.array();

  private final Queue<String> lines = new ArrayDeque<>();
  private final LineBuffer lineBuf =
      new LineBuffer() {
        @Override
        protected void handleLine(String line, String end) {
          lines.add(line);
        }
      };

  /** Creates a new instance that will read lines from the given {@code Readable} object. */
  public LineReader(Readable readable) {