GNU bug report logs - #7287
epa-mail-decrypt changes the current major-mode

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From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: Richard Stallman <rms <at> gnu.org>
Cc: 7287 <at> debbugs.gnu.org
Subject: bug#7287: 24.0.50; epa-mail-decrypt changes the current major-mode
Date: Fri, 27 Sep 2019 17:48:30 +0200

Robert Pluim <rpluim <at> gmail.com> writes:

> I think epa-mail-decrypt is either obsolete, or strongly deprecated,
> since everyone should be use message mode with mml tags to get proper
> MIME formatting, but hereʼs what I tried:
>
>     Sent myself a message with inline OPENPGP
>     Opened that with Gnus
>     Told Gnus to *not* automatically decrypt the OPENPGP part :-)
>     K-c to get a buffer with the encrypted text
>     M-x epa-mail-mode
>     C-c C-e C-d
>
> The end result was a buffer called '*decoded*' in fundamental mode,
> which is the same mode as what K-c used.

Thanks for the recipe.

I'm getting a different result -- after answering `n' to the question

Replace the original text? (y or n)

I get a buffer called " *Temp*" which is, indeed, in a buffer that say's
it's Info mode.  Looking at the code, it's:

(defun epa-decrypt-region (start end &optional make-buffer-function)
  "Decrypt the current region between START and END.

[...]

	  (with-output-to-temp-buffer "*Temp*"
	    (set-buffer standard-output)
	    (insert plain)
	    (epa-info-mode))))

And that mode is:

(define-derived-mode epa-info-mode special-mode "Info"
  "Major mode for `epa-info-buffer'."
  (buffer-disable-undo)
  (setq truncate-lines t
	buffer-read-only t))

So I think the fix here is just to change the lighter to "EPA Info" to
avoid this confusion.

I'm doing that and closing this bug report.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

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