Introduce an option with string argument.
The string argument is put into `str_var`.
+`OPT_STRING_LIST(short, long, &struct string_list, arg_str, description)`::
+ Introduce an option with string argument.
+ The string argument is stored as an element in `string_list`.
+ Use of `--no-option` will clear the list of preceding values.
+
`OPT_INTEGER(short, long, &int_var, description)`::
Introduce an option with integer argument.
The integer is put into `int_var`.
scale the provided value by 1024, 1024^2 or 1024^3 respectively.
The scaled value is put into `unsigned_long_var`.
-`OPT_DATE(short, long, &int_var, description)`::
+`OPT_DATE(short, long, ×tamp_t_var, description)`::
Introduce an option with date argument, see `approxidate()`.
- The timestamp is put into `int_var`.
+ The timestamp is put into `timestamp_t_var`.
-`OPT_EXPIRY_DATE(short, long, &int_var, description)`::
+`OPT_EXPIRY_DATE(short, long, ×tamp_t_var, description)`::
Introduce an option with expiry date argument, see `parse_expiry_date()`.
- The timestamp is put into `int_var`.
+ The timestamp is put into `timestamp_t_var`.
`OPT_CALLBACK(short, long, &var, arg_str, description, func_ptr)`::
Introduce an option with argument.