Re: Creating and accessing environmental variables

[Ship Mints <shipmints@gmail.com>]

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Sheesh, I need more coffee... More like this since it's an OS path:

  (concat "/tmp/foo/bar" path-separator (getenv "PATH"))

On Sun, Dec 8, 2024 at 2:51 PM Ship Mints <shipmints@gmail.com> wrote:

> Couple of things. First, you should not be concatenating paths like you
> showed. Do the following instead and it will be cross platform and more
> "correct":
>
>   (file-name-concat "/tmp/foo/bar" (getenv "PATH"))
>
> Second, a question. After you setenv your PATH, in eshell, what does "echo
> $PATH" show?
>
> On Sun, Dec 8, 2024 at 1:51 PM the_wurfkreuz via Emacs development
> discussions. <emacs-devel@gnu.org> wrote:
>
>> Is it possible to set environment variables and access them immediately
>> without reloading the Emacs configuration (like using the load-file
>> function)?
>>
>> For instance, when I evaluate this code to set the PATH variable:
>>
>> (let ((paths '("/some/path"
>>               "/some/path/2")))
>>   ;; (setq exec-path (append paths exec-path))
>>   (setenv "PATH" (concat (string-join paths ":")
>>                         ":"
>>                         (getenv "PATH"))))
>>
>> And then try to launch eshell in the current Emacs session, I find that
>> the new values aren't appended. The only way to set them is to put the code
>> into a config file and reload it through (load-file "~/.emacs.d/init.el").
>>
>

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