Function do_add_cursor

outdated/sys/mac/mactty.c:777–798

* Low-level cursor handling routine */

 * Low-level cursor handling routine
 */
static void
do_add_cursor(tty_record *record, short x_pos)
{
    record->x_curs = x_pos;
    if (record->x_curs >= record->x_size) {
        if (0L != (record->attribute[TTY_ATTRIB_FLAGS] & TA_WRAP_AROUND)) {
            record->y_curs++;
            record->x_curs = 0;
            if (record->y_curs >= record->y_size) {
                if (0L != (record->attribute[TTY_ATTRIB_FLAGS]
                           & TA_INHIBIT_VERT_SCROLL)) {
                    record->y_curs = record->y_size;
                } else {
                    scroll_tty(record->its_window, 0,
                               1 + record->y_curs - record->y_size);
                }
            }
        } else {
            record->x_curs = record->x_size;
        }
    }
}

/*
 * Do control character