From: Andreas Politz <politza@hochschule-trier.de>
Date: Thu, 5 Oct 2017 17:24:55 +0000 (+0200)
Subject: Add test regarding overlay and buffer encoding
X-Git-Tag: emacs-29.0.90~1616^2~406^2~69
X-Git-Url: http://git.eshelyaron.com/gitweb/?a=commitdiff_plain;h=7c0824a1d04d660c86c78143d5485af174ee0c6b;p=emacs.git

Add test regarding overlay and buffer encoding

* test/src/buffer-tests.el (test-overlay-multibyte-transition-1):
New test exposing a bug regarding overlays when changing the
multibyteness of a buffer.
---

diff --git a/test/src/buffer-tests.el b/test/src/buffer-tests.el
index 71f8705c6fd..e3bc2c5dfcb 100644
--- a/test/src/buffer-tests.el
+++ b/test/src/buffer-tests.el
@@ -1212,6 +1212,14 @@ with parameters from the *Messages* buffer modification."
               (54 . 135)
               (68 . 99))))))
 
+(ert-deftest test-overlay-multibyte-transition-1 ()
+  (with-temp-buffer
+    (set-buffer-multibyte t)
+    (insert "Ä")
+    (let ((ov (make-overlay (point-min) (point-max))))
+      (set-buffer-multibyte nil)
+      (should (eq (overlay-end ov) (point-max))))))
+
 
 ;; +===================================================================================+
 ;; | Autogenerated insert/delete/narrow tests