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

[Robert Pluim <rpluim@gmail.com>]

>>>>> On Thu, 02 May 2019 18:57:23 +0300, Eli Zaretskii <eliz@gnu.org> said:

    >> From: Andy Moreton <andrewjmoreton@gmail.com> Date: Thu, 02 May
    >> 2019 16:43:31 +0100
    >> 
    >> > So yes, I think Noam is right, and 'undecided' is a better
    >> alternative here.
    >> 
    >> That is arguing for the existing code, which does not work
    >> correctly.

    Eli> No, the existing code simply uses the undecoded string.

    Eli> What I argue for is to do this:

    >diff --git a/lisp/gnus/mm-view.el b/lisp/gnus/mm-view.el
    >index 1e1d264b99..173ebfab48 100644
    >--- a/lisp/gnus/mm-view.el
    >+++ b/lisp/gnus/mm-view.el
    >@@ -475,7 +475,7 @@ mm-display-inline-fontify
    > 		    (charset
    > 		     (mm-decode-string text charset))
    > 		    (t
    >- text)))
    >+ (mm-decode-string text 'undecided))))
    >       (let ((font-lock-verbose nil) ; font-lock is a bit too verbose.
    > 	    (enable-local-variables nil))
    >         ;; We used to set font-lock-mode-hook to nil to avoid enabling

That fixes things for me, thanks (I tested against Paul's original
message).

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

Robert