bug#66706: [PATCH] Automatic elisp dialect insertion

[Eli Zaretskii]

> Date: Wed, 25 Oct 2023 17:07:00 -0700
> Cc: Eli Zaretskii <eliz@gnu.org>, 66706@debbugs.gnu.org,
>  mattias.engdegard@gmail.com, Stefan Monnier <monnier@iro.umontreal.ca>,
>  stefankangas@gmail.com
> From: Jim Porter <jporterbugs@gmail.com>
> 
> 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.