bug#22786: 25.1.50; eww arabic rendering

[Eli Zaretskii]

> From: Lars Ingebrigtsen <larsi@gnus.org>
> Cc: 22786@debbugs.gnu.org,  mohamed.hibti@gmail.com
> Date: Mon, 29 Feb 2016 13:34:47 +1100
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> > Except that I think it shouldn't be a toggle, but a tristate: nil is
> > also a useful value for bidi-paragraph-direction in this context.
> 
> But as an interactive function the nil value doesn't seem very useful.

The _result_ should be to have bidi-paragraph-direction bound to nil.

> eww defaults explicitly to left-to-right, so the user just needs
> something to switch to right-to-left...  (And back again, if needed.)

If you have a page whose paragraphs need different directions, neither
of the above 2 will DTRT, but nil will.