bug#66706: [PATCH] Automatic elisp dialect insertion

[Eli Zaretskii]

> From: Mattias Engdegård <mattias.engdegard@gmail.com>
> Date: Wed, 25 Oct 2023 20:19:40 +0200
> Cc: Stefan Monnier <monnier@iro.umontreal.ca>,
>  luangruo@yahoo.com,
>  66706@debbugs.gnu.org,
>  stefankangas@gmail.com
> 
> 25 okt. 2023 kl. 18.08 skrev Eli Zaretskii <eliz@gnu.org>:
> 
> > If you think that inserting the cookie is okay, then it should also be
> > okay to turn lexical-binding on by default.  The effect is the same.
> 
> No, the automatic cookie insertion doesn't affect existing code.

Which is even worse, because some files will use lexical-binding, and
others will use dynamic binding.