Function re_refresh

extern/editline/src/refresh.c:199–337

re_refresh(): * draws the new virtual screen image from the current input * line, then goes line-by-line changing the real image to the new * virtual image. The routine to re-draw a line can be replaced * easily in hopes of a smarter one being placed there. */

 *	easily in hopes of a smarter one being placed there.
 */
protected void
re_refresh(EditLine *el)
{
	int i, rhdiff;
	Char *cp, *st;
	coord_t cur;
#ifdef notyet
	size_t termsz;
#endif

	ELRE_DEBUG(1, (__F, "el->el_line.buffer = :%s:\r\n",
	    el->el_line.buffer));

	/* reset the Drawing cursor */
	el->el_refresh.r_cursor.h = 0;
	el->el_refresh.r_cursor.v = 0;

	/* temporarily draw rprompt to calculate its size */
	prompt_print(el, EL_RPROMPT);

	/* reset the Drawing cursor */
	el->el_refresh.r_cursor.h = 0;
	el->el_refresh.r_cursor.v = 0;

	if (el->el_line.cursor >= el->el_line.lastchar) {
		if (el->el_map.current == el->el_map.alt
		    && el->el_line.lastchar != el->el_line.buffer)
			el->el_line.cursor = el->el_line.lastchar - 1;
		else
			el->el_line.cursor = el->el_line.lastchar;
	}

	cur.h = -1;		/* set flag in case I'm not set */
	cur.v = 0;

	prompt_print(el, EL_PROMPT);

	/* draw the current input buffer */
#if notyet
	termsz = el->el_terminal.t_size.h * el->el_terminal.t_size.v;
	if (el->el_line.lastchar - el->el_line.buffer > termsz) {
		/*
		 * If line is longer than terminal, process only part
		 * of line which would influence display.
		 */
		size_t rem = (el->el_line.lastchar-el->el_line.buffer)%termsz;

		st = el->el_line.lastchar - rem
			- (termsz - (((rem / el->el_terminal.t_size.v) - 1)
					* el->el_terminal.t_size.v));
	} else
#endif
		st = el->el_line.buffer;

	for (cp = st; cp < el->el_line.lastchar; cp++) {
		if (cp == el->el_line.cursor) {
                        int w = Width(*cp);
			/* save for later */