UAX #9 (Bidirectional algorithm) reference implementations

Fri Dec 9 02:32:32 CST 2016

> From: Fabian Giesen <fabiang at radgametools.com>
> Date: Thu, 8 Dec 2016 18:41:35 -0800
> 
> Can anyone confirm whether my interpretation of the rules is correct and 
> this is an actual bug in BidiReferenceC?

Emacs 25 (which should be up to date with Unicode 9.0) produces the
result that you expect, FWIW, except that it doesn't remove the ESC
from display (per design).