GNU bug report logs - #38587
base64-decode-region breaks encoding

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From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: Juri Linkov <juri <at> linkov.net>
Cc: Eli Zaretskii <eliz <at> gnu.org>, schwab <at> linux-m68k.org, 38587 <at> debbugs.gnu.org
Subject: bug#38587: base64-decode-region breaks encoding
Date: Tue, 24 Dec 2019 16:37:15 +0100

Juri Linkov <juri <at> linkov.net> writes:

> Thanks, I'm using this advice.
>
> (advice-add 'base64-decode-region :after
>             (lambda (beg end &optional _base64url)
>               (decode-coding-region beg end buffer-file-coding-system))
>             '((name . base64-decode-region-with-buffer-coding)))

I think in many cases this will work fine, but you probably will have
Emacs double-decode a lot of data, as the other code in Emacs will
normally call decode-coding-region (if you want to end up with text),
and you'll destroy the bits of your Emacs that decodes base64 data into
images and the like.

(If I read the advice correctly -- I'm not very familiar with advising
functions.)

> So I'm closing this.  Not sure what could be added to documentation.

Something equivalent to what the manual has to say about it would be
nice.

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

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