bug#35507: Gnus mojibakifies UTF-8 text/x-patch attachments from Thunderbird

[Eli Zaretskii]

> From: Robert Pluim <rpluim@gmail.com>
> Cc: Andy Moreton <andrewjmoreton@gmail.com>,  35507@debbugs.gnu.org
> Date: Thu, 02 May 2019 18:29:52 +0200
> 
> That fixes things for me, thanks (I tested against Paul's original
> message).

Thanks for testing.

> I donʼt see any need for it to be configurable, but thatʼs up to you.

No need, IMO.  That's a nice bonus of Noam's idea: 'undecided' can
already be configured via existing facilities, like
prefer-coding-system, set-language-environment, and their ilk.