Function rl_initialize

extern/editline/src/readline.c:291–414

* initialize rl compat stuff */

 * initialize rl compat stuff
 */
int
rl_initialize(void)
{
	HistEvent ev;
	int editmode = 1;
	struct termios t;

	if (e != NULL)
		el_end(e);
	if (h != NULL)
		history_end(h);

	if (!rl_instream)
		rl_instream = stdin;
	if (!rl_outstream)
		rl_outstream = stdout;

	/*
	 * See if we don't really want to run the editor
	 */
	if (tcgetattr(fileno(rl_instream), &t) != -1 && (t.c_lflag & ECHO) == 0)
		editmode = 0;

	e = el_init(rl_readline_name, rl_instream, rl_outstream, stderr);

	if (!editmode)
		el_set(e, EL_EDITMODE, 0);

	h = history_init();
	if (!e || !h)
		return -1;

	history(h, &ev, H_SETSIZE, INT_MAX);	/* unlimited */
	history_length = 0;
	max_input_history = INT_MAX;
	el_set(e, EL_HIST, history, h);

	/* Setup resize function */
	el_set(e, EL_RESIZE, _resize_fun, &rl_line_buffer);

	/* setup getc function if valid */
	if (rl_getc_function)
		el_set(e, EL_GETCFN, _getc_function);

	/* for proper prompt printing in readline() */
	if (rl_set_prompt("") == -1) {
		history_end(h);
		el_end(e);
		return -1;
	}
	el_set(e, EL_PROMPT, _get_prompt, RL_PROMPT_START_IGNORE);
	el_set(e, EL_SIGNAL, rl_catch_signals);

	/* set default mode to "emacs"-style and read setting afterwards */
	/* so this can be overridden */
	el_set(e, EL_EDITOR, "emacs");
	if (rl_terminal_name != NULL)
		el_set(e, EL_TERMINAL, rl_terminal_name);