Function show_menu

scripts/config/nconf.c:1025–1071

this function assumes reset_menu has been called before */

/* this function assumes reset_menu has been called before */
static void show_menu(const char *prompt, const char *instructions,
		int selected_index, int *last_top_row)
{
	int maxx, maxy;
	WINDOW *menu_window;

	current_instructions = instructions;

	clear();
	print_in_middle(stdscr, 1, getmaxx(stdscr),
			menu_backtitle,
			attr_main_heading);

	wattrset(main_window, attr_main_menu_box);
	box(main_window, 0, 0);
	wattrset(main_window, attr_main_menu_heading);
	mvwprintw(main_window, 0, 3, " %s ", prompt);
	wattrset(main_window, attr_normal);

	set_menu_items(curses_menu, curses_menu_items);

	/* position the menu at the middle of the screen */
	scale_menu(curses_menu, &maxy, &maxx);
	maxx = min(maxx, mwin_max_cols-2);
	maxy = mwin_max_lines;
	menu_window = derwin(main_window,
			maxy,
			maxx,
			2,
			(mwin_max_cols-maxx)/2);
	keypad(menu_window, TRUE);
	set_menu_win(curses_menu, menu_window);
	set_menu_sub(curses_menu, menu_window);

	/* must reassert this after changing items, otherwise returns to a
	 * default of 16
	 */
	set_menu_format(curses_menu, maxy, 1);
	center_item(selected_index, last_top_row);
	set_menu_format(curses_menu, maxy, 1);

	print_function_line();

	/* Post the menu */
	post_menu(curses_menu);
	refresh_all_windows(main_window);
}

static void adj_match_dir(match_f *match_direction)
{