System.err.println(e); } }
    public static void main(String av[]) {        Undent c = new Undent();        if ((av.length == 0) {            c.process(new BufferedReader(				new InputStreamReader(System.in)));		else for (int i=0; i<av.length; i++)			try {				c.process(new BufferedReader(new FileReader(av[i])));			} catch (FileNotFoundException e) {