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

[Basil L. Contovounesios]

Eli Zaretskii <eliz@gnu.org> writes:

>> From: Noam Postavsky <npostavs@gmail.com>
>> Date: Thu, 02 May 2019 08:01:38 -0400
>> Cc: 35507@debbugs.gnu.org
>> 
>> I understood from Paul's followup in https://debbugs.gnu.org/35507#32
>> that the report is mainly about the case where there is a Content-Type
>> header with a charset field within the body of the attachment.
>
> Yes, that's my understanding as well.  So I guess Gnus should try
> gleaning the charset from there.  The 'undecided' stuff is for when it
> fails, I think.

Question following an initial reading of (info "(elisp) Coding System
Basics"): would it be better in this case to use prefer-utf-8 instead of
undecided?  If not, why not?

Thanks,

-- 
Basil