rem: set_initialize (struct Spec_list *s, int complement_this_set, SET_TYPE *in_set)
add: set_initialize (struct Spec_list *s, bool complement_this_set, bool *in_set)
context: set_initialize (struct Spec_list *s, int complement_this_set, SET_TYPE *in_set){  int c;  size_t i;  memset (in_set, 0, N_CHARS * sizeof (in_set[0]));  s->state = BEGIN_STATE;  while ((c = get_next (s, NULL)) != -1)    in_set[c] = 1;  if (complement_this_set)    for (i = 0; i < N_CHARS; i++)      in_set[i] = (!in_set[i]);}