Redisplay
---------

 - Function: int rl_redisplay ()
     Change what's displayed on the screen to reflect the current
     contents of `rl_line_buffer'.

 - Function: int rl_forced_update_display ()
     Force the line to be updated and redisplayed, whether or not
     Readline thinks the screen display is correct.

 - Function: int rl_on_new_line ()
     Tell the update routines that we have moved onto a new (empty)
     line, usually after ouputting a newline.

 - Function: int rl_reset_line_state ()
     Reset the display state to a clean state and redisplay the current
     line starting on a new line.

 - Function: int rl_message (va_alist)
     The arguments are a string as would be supplied to `printf'.  The
     resulting string is displayed in the "echo area".  The echo area
     is also used to display numeric arguments and search strings.

 - Function: int rl_clear_message ()
     Clear the message in the echo area.