Re: master 48aacbf292 2/2: Make many seldom-used generalized variables obsolete

[Augusto Stoffel]

On Mon, 19 Sep 2022 at 14:22, Lars Ingebrigtsen wrote:

> Augusto Stoffel <arstoffel@gmail.com> writes:
>
>> Is it possible at all to set a variable buffer-locally but outside any
>> let-bindings?
>
> That's what `setq-local' does (but you have to switch to the buffer
> first).

set-local just relies on set, so if the variable is let-bound, then the
"toplevel" local value is unchanged:

   (progn (setq-local x 1)
          (let (x) (setq-local x 2))
          x)
   ==> 1

I've had some trouble with this when a major mode (and therefore its
mode hook) is called from a place with let-bound variables.  But then
one could argue that working around it is even more problematic...