if (! g_file_set_contents (config->filename, data, length, &error)) {
fprintf (stderr, "Error saving configuration to %s: %s\n",
config->filename, error->message);
if (! g_file_set_contents (config->filename, data, length, &error)) {
fprintf (stderr, "Error saving configuration to %s: %s\n",
config->filename, error->message);