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;;; callproc-tests.el --- callproc.c tests -*- lexical-binding: t -*-
;; Copyright (C) 2016-2019 Free Software Foundation, Inc.
;; 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 3 of the License, 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. If not, see <https://www.gnu.org/licenses/>.
;;; Code:
(require 'ert)
(eval-when-compile (require 'cl-lib))
(ert-deftest initial-environment-preserved ()
"Check that `initial-environment' is not modified by Emacs (Bug #10980)."
(skip-unless (eq system-type 'windows-nt))
(cl-destructuring-bind (initial-shell shell)
(with-temp-buffer
(let ((process-environment (cons "SHELL" process-environment)))
(call-process (expand-file-name invocation-name invocation-directory)
nil t nil
"--batch" "-Q" "--eval"
(prin1-to-string
'(progn (prin1 (getenv-internal "SHELL" initial-environment))
(prin1 (getenv-internal "SHELL"))))))
(split-string-and-unquote (buffer-string)))
(should (equal initial-shell "nil"))
(should-not (equal initial-shell shell))))
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