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From: Eli Zaretskii <eliz@gnu.org>
Newsgroups: gmane.emacs.devel
Subject: Re: emacs-26 8f18d12: Improve documentation of decoding into
	a	unibyte buffer
Date: Wed, 29 May 2019 21:19:34 +0300
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To: Stefan Monnier <monnier@iro.umontreal.ca>
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In-reply-to: <jwv1s0htexl.fsf-monnier+emacs@gnu.org> (message from Stefan
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> From: Stefan Monnier <monnier@iro.umontreal.ca>
> Date: Wed, 29 May 2019 12:28:30 -0400
> 
> PS: I added checks in encoding/decoding functions to signal errors when
> decoding from multibyte and encoding from unibyte (in my local Emacs),
> and that's been tremendously useful to track down and fix encoding bugs
> in Gnus.

I have nothing against you making these changes locally to catch
bugs.  I sometimes do similar things in my locale version of the code.