7.5.6.6 Arg Type Hierarchical

arg-type = hierarchy;
arg-type = nested;

This denotes an option with a structure-valued argument, a.k.a. subopts in getopts terminology. The argument is parsed and the values made available to the program via the find and find next calls (See libopts-optionFindValue, See libopts-optionGetValue, and see libopts-optionFindNextValue).

tOptionValue * val = optionGetValue(VALUE_OPT_OPTN_NAME, "name");
while (val != NULL) {
  process(val);
  val = optionNextValue(VALUE_OPT_OPTN_NAME, val);
  if (wrong_name(val, "name"))
    break;
}