re_node_set_merge
= re_node_set_merge (&init_nodes, dfa->eclosures + dest_idx);
err = re_node_set_merge (&eclosure, &eclosure_elem);
err = re_node_set_merge (&state->inveclosure,
*err = re_node_set_merge (&next_nodes,
err = re_node_set_merge (&next_nodes,
err = re_node_set_merge (&union_set, &dest_state->nodes);
err = re_node_set_merge (&new_nodes, eclosure);
err3 = re_node_set_merge (cur_nodes, &new_dests);
err = re_node_set_merge (&follows, dfa->eclosures + next_node);