+ while ((!s->m_service_name_sort.empty()) && s->m_service_name_sort[0] == ' ')
+ s->m_service_name_sort.erase(0, 1);
+
+ /* put unnamed services at the end, not at the beginning. */
+ if (s->m_service_name_sort.empty())
+ s->m_service_name_sort = "\xFF";
+