{12, "SIGUSR2", "user defined signal 2"},
	{13, "SIGPIPE", "broken pipe"},
	{14, "SIGALRM", "alarm clock"},
	{15, "SIGTERM", "terminated"},
	{16, "SIGSTKFLT", "stack fault"},
	{17, "SIGCHLD", "child exited"},
	{18, "SIGCONT", "continued"},
	{19, "SIGSTOP", "stopped (signal)"},
	{20, "SIGTSTP", "stopped"},
	{21, "SIGTTIN", "stopped (tty input)"},
	{22, "SIGTTOU", "stopped (tty output)"},

	{12, "SIGUSR2", "user defined signal 2"},
	{13, "SIGPIPE", "broken pipe"},
	{14, "SIGALRM", "alarm clock"},
	{15, "SIGTERM", "terminated"},
	{16, "SIGSTKFLT", "stack fault"},
	{17, "SIGCHLD", "child exited"},
	{18, "SIGCONT", "continued"},
	{19, "SIGSTOP", "stopped (signal)"},
	{20, "SIGTSTP", "stopped"},
	{21, "SIGTTIN", "stopped (tty input)"},
	{22, "SIGTTOU", "stopped (tty output)"},

			v.SetArgs2(argQ, phi)
		}
	}

	// Look for some common CFG structures
	// in which one outbound path from b exits,
	// with no other preds joining.
	// In these cases, we can reconstruct what the value
	// of any phi in b must be in the path leading to exit,
	// and move the phi to the non-exit path.

	if len(t.Preds) == 1 && len(u.Preds) == 1 && len(t.Succs) == 0 {
		// p   q
		//  \ /
		//   b
		//  / \

		words[i] = os.Expand(word, g.expandVar)
	}
	return words
}

var stop = fmt.Errorf("error in generation")

// errorf logs an error message prefixed with the file and line number.
// It then exits the program (with exit status 1) because generation stops
// at the first error.
func (g *Generator) errorf(format string, args ...any) {
	fmt.Fprintf(os.Stderr, "%s:%d: %s\n", base.ShortPath(g.path), g.lineNum,

	{12, "SIGUSR2", "user defined signal 2"},
	{13, "SIGPIPE", "broken pipe"},
	{14, "SIGALRM", "alarm clock"},
	{15, "SIGTERM", "terminated"},
	{16, "SIGSTKFLT", "stack fault"},
	{17, "SIGCHLD", "child exited"},
	{18, "SIGCONT", "continued"},
	{19, "SIGSTOP", "stopped (signal)"},
	{20, "SIGTSTP", "stopped"},
	{21, "SIGTTIN", "stopped (tty input)"},
	{22, "SIGTTOU", "stopped (tty output)"},

	{12, "SIGUSR2", "user defined signal 2"},
	{13, "SIGPIPE", "broken pipe"},
	{14, "SIGALRM", "alarm clock"},
	{15, "SIGTERM", "terminated"},
	{16, "SIGSTKFLT", "stack fault"},
	{17, "SIGCHLD", "child exited"},
	{18, "SIGCONT", "continued"},
	{19, "SIGSTOP", "stopped (signal)"},
	{20, "SIGTSTP", "stopped"},
	{21, "SIGTTIN", "stopped (tty input)"},
	{22, "SIGTTOU", "stopped (tty output)"},

	{13, "SIGPIPE", "broken pipe"},
	{14, "SIGALRM", "alarm clock"},
	{15, "SIGTERM", "terminated"},
	{16, "SIGUSR1", "user defined signal 1"},
	{17, "SIGUSR2", "user defined signal 2"},
	{18, "SIGCHLD", "child exited"},
	{19, "SIGPWR", "power failure"},
	{20, "SIGWINCH", "window changed"},
	{21, "SIGURG", "urgent I/O condition"},
	{22, "SIGIO", "I/O possible"},
	{23, "SIGSTOP", "stopped (signal)"},
	{24, "SIGTSTP", "stopped"},

	{13, "SIGPIPE", "broken pipe"},
	{14, "SIGALRM", "alarm clock"},
	{15, "SIGTERM", "terminated"},
	{16, "SIGUSR1", "user defined signal 1"},
	{17, "SIGUSR2", "user defined signal 2"},
	{18, "SIGCHLD", "child exited"},
	{19, "SIGPWR", "power failure"},
	{20, "SIGWINCH", "window changed"},
	{21, "SIGURG", "urgent I/O condition"},
	{22, "SIGIO", "I/O possible"},
	{23, "SIGSTOP", "stopped (signal)"},
	{24, "SIGTSTP", "stopped"},

	// e.g. cancel the context, close the client.
	// If this watch chan is broken and context isn't cancelled, other goroutines will still hang.
	// We should notify the main thread that this goroutine has exited.
	close(watchClosedCh)
}

// processEvent processes events from etcd watcher and sends results to resultChan.
func (wc *watchChan) processEvent(wg *sync.WaitGroup) {
	defer wg.Done()

	for {

   * with a satisfied guard (if one exists) whenever any thread occupying the monitor exits the
   * monitor, either by unlocking all of its held locks, or by starting to wait for a guard. This
   * includes exceptional exits, so all control paths involving signalling must be protected by a
   * finally block.
   *