Subject: bug#78859: 31.0.50; Viewing mime part in Rmail sets truncate-lines

From: Eli Zaretskii <[email-masked]>
Date: Sat, 12 Jul 2025 11:19:15 +0300

> From: Richard Stallman <[email-masked]>
> Cc: [email-masked], [email-masked]
> Date: Sun, 06 Jul 2025 22:19:20 -0400
> 
>   > I tried with set-frame-width of 60 now, and I still get truncate-lines
>   > of nil.  This is with unpatched Emacs.
> 
> I don't understand why.

Neither do I.

Did you visit the mbox file in "emacs -Q"?  If not, perhaps some of
your customizations will help me reproduce the issue on my system?