Re: Understanding the "let" construct and the setting of variables

[Jean Louis]

* Emanuel Berg via Users list for the GNU Emacs text editor 
<help-gnu-emacs@gnu.org> [2020-12-18 18:43]:
> 
> 3. if that isn't enough to use let/let* because several
>    functions need to access a variable, use `setq' at the base
>    level (i.e., first char of the line, or column 0) - not
>    that Elisp has only one level, really, which is why you
>    should use `setq' there to avoid confusion and errors.
>    Because everyone can see what is created by `setq', this
>    should be visible in the code style as well.
> 
>    Note that just because it would seem that two functions
>    need access to the same variable, this actually doesn't
>    have to be the case at all! Think it thru one extra time
>    before you do it.

Instructions like that belong on a website where they become easily
searchable for other users to understand it.

We could index all the mailing list easily and provide search engine
for this.