- if (append_to) {
- for (prev_mode = append_to; prev_mode->next; )
- prev_mode = prev_mode->next;
- prev_mode->next = first_mode;
- return append_to;
+ if (!(curr_mode = *root_mode_ptr))
+ *root_mode_ptr = first_mode;
+ else {
+ while (curr_mode->next)
+ curr_mode = curr_mode->next;
+ curr_mode->next = first_mode;