112     wp->w_botline = lnum;  in comp_botline()
201 	curwin->w_botline = curwin->w_topline;  in update_topline()
227 	curwin->w_botline = 2;  in update_topline()
317 	if (curwin->w_botline <= curbuf->b_ml.ml_line_count)  in update_topline()
319 	    if (curwin->w_cursor.lnum < curwin->w_botline)  in update_topline()
322 					     >= (long)curwin->w_botline - *so_ptr  in update_topline()
344 		while (loff.lnum < curwin->w_botline  in update_topline()
346 			&& (loff.lnum + 1 < curwin->w_botline || loff.fill == 0)  in update_topline()
373 				   lnum >= curwin->w_botline - *so_ptr; --lnum)  in update_topline()
384 		    line_count = curwin->w_cursor.lnum - curwin->w_botline  in update_topline()
546     wp->w_botline += lnum - wp->w_topline;  in set_topline()
547     if (wp->w_botline > wp->w_buffer->b_ml.ml_line_count + 1)  in set_topline()
548 	wp->w_botline = wp->w_buffer->b_ml.ml_line_count + 1;  in set_topline()
1237     if (pos->lnum >= wp->w_topline && pos->lnum <= wp->w_botline)  in textpos2screenpos()
1360 		curwin->w_botline -= curwin->w_topline - first;  in scrolldown()
1367 	--curwin->w_botline;		// approximate w_botline  in scrolldown()
1465 	curwin->w_botline += lnum - curwin->w_topline;  in scrollup()
1472 	curwin->w_botline += line_count;	// approximate w_botline  in scrollup()
1477     if (curwin->w_botline > curbuf->b_ml.ml_line_count + 1)  in scrollup()
1478 	curwin->w_botline = curbuf->b_ml.ml_line_count + 1;  in scrollup()
1614 	--curwin->w_botline;	    // approximate w_botline  in scrolldown_clamp()
1666 	++curwin->w_botline;		// approximate w_botline  in scrollup_clamp()
1928 	if (wp->w_botline <= wp->w_buffer->b_ml.ml_line_count)  in set_empty_rows()
1930 	    wp->w_filler_rows = diff_check_fill(wp, wp->w_botline);  in set_empty_rows()
1964     linenr_T	old_botline = curwin->w_botline;  in scroll_cursor_bot()
1974 	curwin->w_botline = cln + 1;  in scroll_cursor_bot()
1978 	for (curwin->w_topline = curwin->w_botline;  in scroll_cursor_bot()
2014     if (cln >= curwin->w_botline)  in scroll_cursor_bot()
2017 	if (cln == curwin->w_botline)  in scroll_cursor_bot()
2038     fill_below_window = diff_check_fill(curwin, curwin->w_botline)  in scroll_cursor_bot()
2049 		&& loff.lnum <= curwin->w_botline  in scroll_cursor_bot()
2051 		&& (loff.lnum < curwin->w_botline  in scroll_cursor_bot()
2065 	if (loff.lnum >= curwin->w_botline  in scroll_cursor_bot()
2067 		&& (loff.lnum > curwin->w_botline  in scroll_cursor_bot()
2074 	    if (loff.lnum == curwin->w_botline  in scroll_cursor_bot()
2093 		if (boff.lnum >= curwin->w_botline  in scroll_cursor_bot()
2095 			|| (boff.lnum + 1 == curwin->w_botline  in scroll_cursor_bot()
2102 		    if (boff.lnum == curwin->w_botline  in scroll_cursor_bot()
2127 	for (i = 0; i < scrolled && boff.lnum < curwin->w_botline; )  in scroll_cursor_bot()
2153 	curwin->w_botline = old_botline;  in scroll_cursor_bot()
2283     if (curwin->w_botline == curbuf->b_ml.ml_line_count + 1  in cursor_correct()
2298 	    && cln < curwin->w_botline - below_wanted  in cursor_correct()
2312     botline = curwin->w_botline - 1;  in cursor_correct()
2358 	if (cln > botline && curwin->w_botline <= curbuf->b_ml.ml_line_count)  in cursor_correct()
2401 		    && curwin->w_botline > curbuf->b_ml.ml_line_count)  in onepage()
2430 	    else if (curwin->w_botline > curbuf->b_ml.ml_line_count)  in onepage()
2443 		loff.lnum = curwin->w_botline;  in onepage()
2567 		    curwin->w_cursor.lnum = curwin->w_botline - 1;  in onepage()
2610 	else if (curwin->w_botline > curbuf->b_ml.ml_line_count)  in onepage()
2714 	while (n > 0 && curwin->w_botline <= curbuf->b_ml.ml_line_count)  in halfpage()
2761 		    i = plines(curwin->w_botline);  in halfpage()
2765 		    (void)hasFolding(curwin->w_botline, NULL,  in halfpage()
2766 							  &curwin->w_botline);  in halfpage()
2768 		    ++curwin->w_botline;  in halfpage()
2770 		} while (curwin->w_botline <= curbuf->b_ml.ml_line_count);  in halfpage()