// style command. The optional args specify the analyzers to describe.
// Help calls log.Fatal if no such analyzer exists.
func Help(progname string, analyzers []*analysis.Analyzer, args []string) {
	// No args: show summary of all analyzers.
	if len(args) == 0 {
		fmt.Println(strings.Replace(help, "PROGNAME", progname, -1))
		fmt.Println("Registered analyzers:")
		fmt.Println()
		sort.Slice(analyzers, func(i, j int) bool {