pm->plugin_path = format (0, "%s%c", vat_plugin_path, 0);
if (vat_plugin_name_filter)
pm->plugin_name_filter = format (0, "%s%c", vat_plugin_name_filter, 0);
pm->plugin_path = format (0, "%s%c", vat_plugin_path, 0);
if (vat_plugin_name_filter)
pm->plugin_name_filter = format (0, "%s%c", vat_plugin_name_filter, 0);