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From: Eli Zaretskii <eliz@gnu.org>
Newsgroups: gmane.emacs.devel
Subject: Re: a strict visual cursor in r2l and l2r buffers (was: some progress)
Date: Sun, 23 Jun 2013 01:17:31 +0300
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To: Uwe Brauer <oub@mat.ucm.es>
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> From: Uwe Brauer <oub@mat.ucm.es>
> Cc: emacs-devel@gnu.org
> Date: Sat, 22 Jun 2013 19:09:27 +0200
> 
> This is a slightly different issue. Would it be possible to implement a
> strict visual[1] cursor for buffers containing  R2L and L2R  text??

It's possible, just not trivial.  Patches are welcome.