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From: Eli Zaretskii <eliz@gnu.org>
Newsgroups: gmane.emacs.devel
Subject: Re: Declaring 'lexical-binding: nil' obsolete
Date: Sun, 26 Sep 2021 09:06:16 +0300
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Cc: luangruo@yahoo.com, monnier@iro.umontreal.ca, emacs-devel@gnu.org
To: Stefan Kangas <stefan@marxist.se>
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 (message from Stefan Kangas on Sat, 25 Sep 2021 17:04:46 -0700)
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> From: Stefan Kangas <stefan@marxist.se>
> Date: Sat, 25 Sep 2021 17:04:46 -0700
> Cc: Stefan Monnier <monnier@iro.umontreal.ca>,
>  Emacs developers <emacs-devel@gnu.org>
> 
> Po Lu <luangruo@yahoo.com> writes:
> 
> > But countless amounts of user code might be made obsolete by this
> > change, including a great deal of my own.  And I (and presumably other
> > people) will have no time to adjust to this change.
> 
> The roadmap I propose will give you a decade or so to adjust, and even
> then will you only need to change one line per ELisp file for it to work
> just as it does today.
> 
> Before then, the worst that will happen is that you will see a warning.

Unwarranted warnings are baaad...  Especially when there's nothing
wrong with the code, really.