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From: Eli Zaretskii <eliz@gnu.org>
Newsgroups: gmane.emacs.help
Subject: Re: Any way to remove ^L or ^M from some buffer outputs?
Date: Mon, 05 Oct 2020 21:21:57 +0300
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In-Reply-To: <20201005181425.GJ10748@protected.rcdrun.com> (message from Jean
 Louis on Mon, 5 Oct 2020 21:14:25 +0300)
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> Date: Mon, 5 Oct 2020 21:14:25 +0300
> From: Jean Louis <bugs@gnu.support>
> Cc: help-gnu-emacs@gnu.org
> 
> Those are shell output buffers and similar, and it looks ugly, I was
> thinking there is some option to set, to avoid that. Of course I will
> not edit it with hand, it is about watching output nicely formatted.

If this text comes from the shell, you can make Emacs eliminate the ^M
characters by setting the read part of process-coding-system to *-dos.