1READLINE_6.3 {
2    rl_change_environment;
3    rl_clear_history;
4    rl_executing_key;
5    rl_executing_keyseq;
6    rl_filename_stat_hook;
7    rl_history_substr_search_backward;
8    rl_history_substr_search_forward;
9    rl_input_available_hook;
10    rl_print_last_kbd_macro;
11    rl_signal_event_hook;
12};
13