if (!Glib::file_test (filename, Glib::FILE_TEST_IS_DIR|Glib::FILE_TEST_EXISTS)) {
Gtk::MessageDialog msg (string_compose (_("%1: this is only the directory/folder name, not the filename.\n\
The filename will be chosen from the information just above the folder selector."), filename));
if (!Glib::file_test (filename, Glib::FILE_TEST_IS_DIR|Glib::FILE_TEST_EXISTS)) {
Gtk::MessageDialog msg (string_compose (_("%1: this is only the directory/folder name, not the filename.\n\
The filename will be chosen from the information just above the folder selector."), filename));