Subject: Re: bug#29198: Cursor fringe arrow indicator not updating.

From: Eli Zaretskii <[email-masked]>
Date: Wed, 08 Nov 2017 05:39:14 +0200

> Date:  Tue, 07 Nov 2017 12:48:35 -0800
> From:  Keith David Bershatsky <[email-masked]>
> Cc:  [email-masked]
> 
> Yes, "M-x" triggers an immediate removal of the old indicator and places the new indicator at the current line position.
> 
> I would recommend adding an exception to the redisplay optimization to check for a change of placement to the built-in overlay fringe arrow indicator.  Since the fringe arrow indicator has been an existing feature of Emacs for quite some time (built-in to xdisp.c), it should (in my opinion) work out of the box without the need for the user to force a redisplay with additional Lisp code.

The other features which display the fringe arrow work correctly, so
evidently there is a way of moving it from Lisp.