rem: exit (status == 0 ? EXIT_SUCCESS : EXIT_FAILURE);
add: exit (status);
context: usage (int status){  if (status != 0)    fprintf (stderr, _("Try `%s --help' for more information.\n"),	     program_name);  else    {      printf (_("\Usage: %s [OPTION]... [INPUT [OUTPUT]]\n\"),	      program_name);      fputs (_("\Discard all but one of successive identical lines from INPUT (or\n\standard input), writing to OUTPUT (or standard output).\n\\n\"), stdout);     fputs (_("\Mandatory arguments to long options are mandatory for short options too.\n\"), stdout);     fputs (_("\  -c, --count           prefix lines by the number of occurrences\n\  -d, --repeated        only print duplicate lines\n\"), stdout);     fputs (_("\  -D, --all-repeated[=delimit-method] print all duplicate lines\n\                        delimit-method={none(default),prepend,separate}\n\                        Delimiting is done with blank lines.\n\  -f, --skip-fields=N   avoid comparing the first N fields\n\  -i, --ignore-case     ignore differences in case when comparing\n\  -s, --skip-chars=N    avoid comparing the first N characters\n\  -u, --unique          only print unique lines\n\"), stdout);     fputs (_("\  -w, --check-chars=N   compare no more than N characters in lines\n\"), stdout);     fputs (HELP_OPTION_DESCRIPTION, stdout);     fputs (VERSION_OPTION_DESCRIPTION, stdout);     fputs (_("\\n\A field is a run of whitespace, then non-whitespace characters.\n\Fields are skipped before chars.\n\"), stdout);      printf (_("\nReport bugs to <%s>.\n"), PACKAGE_BUGREPORT);    }  exit (status == 0 ? EXIT_SUCCESS : EXIT_FAILURE);}