From: Kévin Le Gouguec <kevin.legouguec@gmail.com>
Date: Tue, 19 May 2020 21:17:04 +0000 (+0200)
Subject: Add test for bug#39680
X-Git-Tag: emacs-28.0.90~7316
X-Git-Url: http://git.eshelyaron.com/gitweb/?a=commitdiff_plain;h=5352bda4eeb7415ad2bda5d74e007b4f36021e68;p=emacs.git

Add test for bug#39680

* test/lisp/electric-tests.el (electric-pair-undo-unrelated-state):
New test.
---

diff --git a/test/lisp/electric-tests.el b/test/lisp/electric-tests.el
index 56d1bdb110e..67f474cbd52 100644
--- a/test/lisp/electric-tests.el
+++ b/test/lisp/electric-tests.el
@@ -546,6 +546,24 @@ baz\"\""
       (electric-pair-delete-pair 1)
       (should (equal "" (buffer-string))))))
 
+
+;;; Undoing
+(ert-deftest electric-pair-undo-unrelated-state ()
+  "Make sure `electric-pair-mode' does not confuse `undo' (bug#39680)."
+  (with-temp-buffer
+    (buffer-enable-undo)
+    (electric-pair-local-mode)
+    (let ((last-command-event ?\())
+      (ert-simulate-command '(self-insert-command 1)))
+    (undo-boundary)
+    (let ((last-command-event ?a))
+      (ert-simulate-command '(self-insert-command 1)))
+    (undo-boundary)
+    (ert-simulate-command '(undo))
+    (let ((last-command-event ?\())
+      (ert-simulate-command '(self-insert-command 1)))
+    (should (string= (buffer-string) "(())"))))
+
 
 ;;; Electric newlines between pairs
 ;;; TODO: better tests