optional_argument  122 lib/common/options.c                 if (long_options[lpc].has_arg == optional_argument) {
optional_argument  236 lib/common/options.c                         crm_long_options[i].has_arg == optional_argument ? "[=value]" :
optional_argument  249 lib/common/options.c                     has_arg = optional_argument /* 2 */;
optional_argument  255 lib/common/options.c                     has_arg == optional_argument ? "[value]" :
optional_argument  333 maint/gnulib/lib/argp-parse.c                           ? optional_argument
optional_argument   40 maint/gnulib/tests/test-getopt_long.h     { "prune",    optional_argument, NULL, 'p' },
optional_argument   41 maint/gnulib/tests/test-getopt_long.h     { "quetsche", optional_argument, &q_seen, 1 },