}
	}

	// Assign line comments to syntax immediately following.
	for _, x := range in.pre {
		start, _ := x.Span()
		if debug {
			fmt.Fprintf(os.Stderr, "pre %T :%d:%d #%d\n", x, start.Line, start.LineRune, start.Byte)
		}
		xcom := x.Comment()
		for len(line) > 0 && start.Byte >= line[0].Start.Byte {
			if debug {

		// have an empty match: start.x==end.x and start.y==end.y.
		start := m
		for start.x > done.x && start.y > done.y && x[start.x-1] == y[start.y-1] {
			start.x--
			start.y--
		}
		end := m
		for end.x < len(x) && end.y < len(y) && x[end.x] == y[end.y] {
			end.x++
			end.y++
		}

		// Emit the mismatched lines before start into this chunk.

        server.expect("f")
        server.start()

        when:
        async {
            start {
                succeeds("a")
            }
            start {
                succeeds("b")
            }
            server.waitForRequests(2)
            succeeds("c")
            start {
                succeeds("d")
            }
            start {
                succeeds("e")
            }

                void beforeSuite(TestDescriptor suite) { println "START [\$suite] [\$suite.name]" }
                void afterSuite(TestDescriptor suite, TestResult result) { println "FINISH [\$suite] [\$suite.name] [\$result.resultType] [\$result.testCount]" }
                void beforeTest(TestDescriptor test) { println "START [\$test] [\$test.name]" }

        when:
        def result = execHandle.start().waitForFinish()

        then:
        execHandle.state == ExecHandleState.FAILED
        result.exitValue == 72

        when:
        result.assertNormalExitValue()

        then:
        def e = thrown(ExecException)
        e.message.contains "finished with non-zero exit value 72"
    }

    void "start fails when process cannot be started"() {

    assertSame(stopwatch, stopwatch.start());
    assertTrue(stopwatch.isRunning());
  }

  public void testStart_whileRunning() {
    stopwatch.start();
    try {
      stopwatch.start();
      fail();
    } catch (IllegalStateException expected) {
    }
    assertTrue(stopwatch.isRunning());
  }

  public void testStop() {
    stopwatch.start();
    assertSame(stopwatch, stopwatch.stop());

		return
	}
	if to.Executing() {
		start := ev.Time()
		if from == trace.ProcUndetermined {
			start = ctx.startTime
		}
		viewerEv.Name = "proc start"
		viewerEv.Arg = format.ThreadIDArg{ThreadID: uint64(ev.Thread())}
		viewerEv.Ts = ctx.elapsed(start)
		ctx.IncThreadStateCount(ctx.elapsed(start), traceviewer.ThreadStateRunning, 1)
	}
	if from.Executing() {
		start := ev.Time()
		viewerEv.Name = "proc stop"

-- input --
	$
	Blank line at start and end.
	$
-- gofmt --
Blank line at start and end.
-- text --
Blank line at start and end.
-- markdown --
Blank line at start and end.
-- html --

		} else {
			gs.stop(ev.Time(), ev.Stack(), ctx)
		}
	}
	if !from.Executing() && to.Executing() {
		start := ev.Time()
		if from == trace.GoUndetermined {
			// Back-date the event to the start of the trace.
			start = ctx.startTime
		}
		gs.start(start, ev.Thread(), ctx)
	}

	if from == trace.GoWaiting {
		// Goroutine was unblocked.
		gs.unblock(ev.Time(), ev.Stack(), ev.Thread(), ctx)

    def "worker start runs immediately when there are sufficient leases available"() {
        def registry = workerLeaseService(2)

        expect:
        async {
            start {
                def cl = registry.startWorker()
                instant.worker1
                thread.blockUntil.worker2
                cl.leaseFinish()
            }
            start {