Re: [PATCH] Buffer-local process environments

[Augusto Stoffel <arstoffel@gmail.com>]

On Sat, 28 Aug 2021 at 14:47, Michael Albinus <michael.albinus@gmx.de> wrote:

> Augusto Stoffel <arstoffel@gmail.com> writes:
>
> Hi Augusto,
>
>> diff --git a/lisp/progmodes/compile.el b/lisp/progmodes/compile.el
>> index af7b8292b7..1c11b7707e 100644
>> --- a/lisp/progmodes/compile.el
>> +++ b/lisp/progmodes/compile.el
>> @@ -1783,6 +1783,8 @@ compilation-start
>>  	    (replace-regexp-in-string "-mode\\'" "" (symbol-name mode))))
>>  	 (thisdir default-directory)
>>  	 (thisenv compilation-environment)
>> +         (bufferenv (when (local-variable-p 'process-environment)
>> +                      (cons exec-path process-environment)))
>
> W/o further reading, this cannot be right. Elements of
> `process-environment' have always the syntax "VAR=VALUE". You add only a
> VALUE (`exec-path') in `bufferenv'. I understand your intention, using
> `bufferenv' as transportation vehicle, but I believe this is
> mis-designed, and good for trouble. If not now, then later.

This is a temporary, lexical variable that is inaccessible to the user
directly.  It's "destructured" again in the next hunk of the patch.

>
> (I will review your proposal later, when this is fixed.)

Thanks!

>
> Best regards, Michael.