Subject: Re: bug#66706: [PATCH] Automatic elisp dialect insertion

From: Eli Zaretskii <[email-masked]>
Date: Thu, 26 Oct 2023 08:21:29 +0300

> Date: Wed, 25 Oct 2023 17:07:00 -0700
> Cc: Eli Zaretskii <[email-masked]>, [email-masked],
>  [email-masked], Stefan Monnier <[email-masked]>,
>  [email-masked]
> From: Jim Porter <[email-masked]>
> 
> In particular, what's missing from the following paragraph[1]?
> 
> > Another way to think about let is that it is like a setq that is temporary and local. The values set by let are automatically undone when the let is finished. The setting only affects expressions that are inside the bounds of the let expression. In computer science jargon, we would say the binding of a symbol is visible only in functions called in the let form; in Emacs Lisp, the default scoping is dynamic, not lexical. (The non-default lexical binding is not discussed in this manual.) 
> [1] 
> https://www.gnu.org/software/emacs/manual/html_node/eintr/Prevent-confusion.html

IMNSHO, it is woefully incomplete.  Much more needs to be said.