bug#32507: 27.0.50; text-quoting-style

[Eli Zaretskii]

> From: Helmut Eller <eller.helmut@gmail.com>
> Date: Thu, 23 Aug 2018 12:58:30 +0200
> 
> There is no option to disable quote substitution in format-message.  In
> other words, there should be a value for text-quoting-style for which
> the following assertion does not fail:
> 
> (let* (;(text-quoting-style '<something>)
>        (x "'`´‘’‚“”„")
>        (y (format-message x)))
>   (cl-assert (equal x y)))

Seems to work for me with <something> == grave.