bug#22786: 25.1.50; eww arabic rendering

[Lars Ingebrigtsen]

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

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