GNU bug report logs - #75628
31.0.50; Error sending mail using SMTP - base64 encoding fails

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From: Eli Zaretskii <eliz <at> gnu.org>
To: Ingo Brunberg <ingo_brunberg <at> web.de>
Cc: 75628 <at> debbugs.gnu.org
Subject: bug#75628: 31.0.50; Error sending mail using SMTP - base64 encoding fails
Date: Fri, 17 Jan 2025 14:55:55 +0200

> Date: Fri, 17 Jan 2025 10:18:52 +0000
> From:  Ingo Brunberg via "Bug reports for GNU Emacs,
>  the Swiss army knife of text editors" <bug-gnu-emacs <at> gnu.org>
> 
> When I try to send mail with emacs using SMTP, I get error "Multibyte character
> in data for base64 encoding".
> 
> In the current code I have narrowed it down to line 637 in smtpmail.el, where an
> attempt is made to base64 encode a string containing the password which, of
> course, can contain multibyte characters.
> 
> With a simple password some time ago, I could send mail.

Thanks, but please show a complete recipe, preferably starting from
"emacs -Q".

base64 encoding indeed requires its input to be a unibyte string, but
it is impossible to guess how this failed to happen without seeing the
sequence of commands you typed to trigger the problem.

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