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;;; dabbrev-tests.el --- Test suite for dabbrev.
;; Copyright (C) 2016-2019 Free Software Foundation, Inc.
;; Author: Alan Third <alan@idiocy.org>
;; Keywords: dabbrev
;; 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/>.
;;; Commentary:
;;; Code:
(require 'ert)
(require 'dabbrev)
(ert-deftest dabbrev-expand-test ()
"Test for bug#1948.
When DABBREV-ELIMINATE-NEWLINES is non-nil (the default),
repeated calls to DABBREV-EXPAND can result in the source of
first expansion being replaced rather than the destination."
(with-temp-buffer
(insert "ab x\na\nab y")
(goto-char 8)
(save-window-excursion
(set-window-buffer nil (current-buffer))
;; M-/ SPC M-/ M-/
(execute-kbd-macro "\257 \257\257"))
(should (string= (buffer-string) "ab x\nab y\nab y"))))
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