test_optional     379 maint/gnulib/tests/test-argp.c   test_optional (argp, argc, argv, &test_args, "ARG", NULL);
test_optional     386 maint/gnulib/tests/test-argp.c   test_optional (argp, argc, argv, &test_args, NULL, "ARG");
test_optional     393 maint/gnulib/tests/test-argp.c   test_optional (argp, argc, argv, &test_args, "ARG", NULL);
test_optional     400 maint/gnulib/tests/test-argp.c   test_optional (argp, argc, argv, &test_args, NULL, "ARG");
test_optional     407 maint/gnulib/tests/test-argp.c   test_optional (argp, argc, argv, &test_args, "ARG", NULL);
test_optional     414 maint/gnulib/tests/test-argp.c   test_optional (argp, argc, argv, &test_args, "OPT", "FILE");