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From: Eli Zaretskii <eliz@gnu.org>
Newsgroups: gmane.emacs.devel
Subject: Re: [Emacs-diffs] emacs-26 8f18d12: Improve documentation of decoding
	into a unibyte buffer
Date: Sun, 26 May 2019 05:37:51 +0300
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To: Stefan Monnier <monnier@iro.umontreal.ca>
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> From: Stefan Monnier <monnier@iro.umontreal.ca>
> Cc: emacs-devel@gnu.org
> Date: Sat, 25 May 2019 17:11:00 -0400
> 
> But now I wonder, what can we do with this representation.
> I guess set-buffer-multibyte will convert it to the intended chars, but
> that bugs the question "why bother deciding into the unibyte buffer and
> call set-buffer-multibyte afterwards rather than do the reverse"?
> Anything else we can do with it?

I don't know.  It isn't a usual thing to do, to be sure.  But it isn't
non-sensical, either.