bug#22250: 25.0.50; Eww fails to break RTL paragraph

[Eli Zaretskii]

> From: Benjamin Riefenstahl <b.riefenstahl@turtle-trading.net>
> Cc: 22250@debbugs.gnu.org,  Lars Ingebrigtsen <larsi@gnus.org>
> Date: Mon, 28 Dec 2015 20:07:58 +0100
> 
> Now I have one, see attachment.  This, too, is fixed here by setting
> truncate-lines to nil in eww-mode.  The file can be loaded just through
> eww-open-file to exhibit the problem.

Thanks.  I think I see the problem: it's the auto-composition of
characters, in this case the Hebrew diacritics with the consonants.
Disable global-auto-composition-mode, and the problem goes away.  I
think shr.el's line-filling algorithm isn't ready for that, perhaps
because going back a character doesn't necessarily change point's
coordinates.

I will look into that, thanks for a clear test case.