emacs variables and Win Environment Variables

emacs variables and Win Environment Variables

[Javier Oviedo]

Hello all:

Can emacs recognize and use Windows environment variables? For example...

I currently use hard coded paths in these tow cases:

(setq load-path (cons "C:/data/joviedo/Emacs/site-lisp_21_2" load-path))

(defun my-load-DOTemacs ()
  (interactive)
  (find-file "C:/data/joviedo/emacs/_emacs21_2"))


Instead, I'd like to use:

(setq load-path (cons "%MY_EMACS_PATH%/site-lisp_21_2" load-path))

(defun my-load-DOTemacs ()
  (interactive)
  (find-file ""%MY_EMACS_PATH%/_emacs21_2"))

Obviously, I would define MY_EMACS_PATH as a valid path. I prefer to use a
windows environment variable, if possible...but I'd be open to using some
sort emacs global variable or #define like mechanism. My goal is to not have
hard coded paths and such things. I personally hate going in and modifying
these things in every location. I'd like one central place to make the
modification.

Thanks in advance for any assistance.



-- 
Javier

Re: emacs variables and Win Environment Variables

[Oliver Scholz]

"Javier Oviedo" <email_joviedo@yahoo.com> writes:

> Hello all:
>
> Can emacs recognize and use Windows environment variables? For example...

[example]

> Instead, I'd like to use:
>
> (setq load-path (cons "%MY_EMACS_PATH%/site-lisp_21_2" load-path))

(getenv "MY_EMACS_PATH")

[...]
> Obviously, I would define MY_EMACS_PATH as a valid path. I prefer to use a
> windows environment variable, if possible...but I'd be open to using some
> sort emacs global variable or #define like mechanism. My goal is to not have
> hard coded paths and such things. I personally hate going in and modifying
> these things in every location. I'd like one central place to make the
> modification.

Why don't you just use a variable at the top of your .emacs? Then
you have really everything concerning you Emacs in one central
place and you don't have to click around in order to change the
environment variable. For example, I have this at the top of my
.emacs:

(defconst egoge-lisp-dir
  "~/share/emacs/")

Then I could do something like

(push (expand-file-name "nifty-lisp-directory"
			egoge-lisp-dir)
      load-path)

[What I in fact do is to automatically add every directory in my
lisp-dir to the load-path, but that's a different story.]

    Oliver
-- 
14 Pluviôse an 212 de la Révolution
Liberté, Egalité, Fraternité!

Re: emacs variables and Win Environment Variables

[Kevin Rodgers]

Javier Oviedo wrote:

> Can emacs recognize and use Windows environment variables? For example...


Of course: M-x apropos-documentation RET environment variable RET


> I currently use hard coded paths in these tow cases:
> 
> (setq load-path (cons "C:/data/joviedo/Emacs/site-lisp_21_2" load-path))
> 
> (defun my-load-DOTemacs ()
>   (interactive)
>   (find-file "C:/data/joviedo/emacs/_emacs21_2"))
> 
> 
> Instead, I'd like to use:
> 
> (setq load-path (cons "%MY_EMACS_PATH%/site-lisp_21_2" load-path))
> 
> (defun my-load-DOTemacs ()
>   (interactive)
>   (find-file ""%MY_EMACS_PATH%/_emacs21_2"))


(find-file (substitute-in-file-name "$MY_EMACS_PATH/_emacs21_2"))

-- 
Kevin Rodgers