mirror of
https://git.savannah.gnu.org/git/emacs.git
synced 2024-11-23 07:19:15 +00:00
41 lines
1.5 KiB
EmacsLisp
41 lines
1.5 KiB
EmacsLisp
;;; setenv.el --- functions to manipulate environment variables.
|
|
|
|
;;; Copyright Free Software Foundation 1991
|
|
|
|
;;; This file is part of GNU Emacs.
|
|
|
|
;;; GNU Emacs is free software; you can redistribute it and/or modify
|
|
;;; it under the terms of the GNU General Public License as published by
|
|
;;; the Free Software Foundation; either version 1, or (at your option)
|
|
;;; any later version.
|
|
|
|
;;; GNU Emacs is distributed in the hope that it will be useful,
|
|
;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
;;; GNU General Public License for more details.
|
|
|
|
;;; You should have received a copy of the GNU General Public License
|
|
;;; along with GNU Emacs; see the file COPYING. If not, write to
|
|
;;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
|
|
(defun setenv (variable value)
|
|
"Set the value of the environment variable named VARIABLE to VALUE.
|
|
VARIABLE and VALUE should both be strings.
|
|
This function works by modifying process-environment."
|
|
(if (string-match "=" variable)
|
|
(error "name of environment variable contains an '=' character")
|
|
(let ((pattern (concat "^" (regexp-quote (concat variable "="))))
|
|
(scan process-environment))
|
|
(while scan
|
|
(cond
|
|
((string-match pattern (car scan))
|
|
(setcar scan (concat variable "=" value))
|
|
(setq scan nil))
|
|
((null (setq scan (cdr scan)))
|
|
(setq process-environment
|
|
(cons (concat variable "=" value) process-environment))))))))
|
|
|
|
(provide 'setenv)
|
|
|
|
;;; setenv.el ends here
|