From 342fc823a6622f25c79baa8535cb9ea939ef666f Mon Sep 17 00:00:00 2001
From: Andreas Politz <politza@hochschule-trier.de>
Date: Thu, 5 Oct 2017 20:40:31 +0200
Subject: [PATCH] Add test exposing overlay bug

* test/src/buffer-tests.el (overlay-autogenerated-test-64): New test.
---
 test/src/buffer-tests.el | 101 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 101 insertions(+)

diff --git a/test/src/buffer-tests.el b/test/src/buffer-tests.el
index e3bc2c5dfcb..c2c9d060336 100644
--- a/test/src/buffer-tests.el
+++ b/test/src/buffer-tests.el
@@ -7577,4 +7577,105 @@ with parameters from the *Messages* buffer modification."
         (25 . 32)
         (25 . 84))))))
 
+(ert-deftest overlay-autogenerated-test-64 nil
+  (with-temp-buffer
+    (insert "................................................................")
+    (make-overlay 31 10 nil nil nil)
+    (make-overlay 17 58 nil nil t)
+    (make-overlay 20 21 nil t nil)
+    (make-overlay 3 47 nil t t)
+    (make-overlay 47 43 nil t t)
+    (make-overlay 54 8 nil nil t)
+    (make-overlay 51 26 nil t nil)
+    (make-overlay 60 14 nil t nil)
+    (make-overlay 38 6 nil nil t)
+    (make-overlay 41 9 nil nil nil)
+    (make-overlay 44 38 nil nil t)
+    (make-overlay 55 48 nil nil t)
+    (make-overlay 10 41 nil nil t)
+    (make-overlay 35 49 nil t nil)
+    (make-overlay 50 46 nil nil nil)
+    (make-overlay 28 28 nil t nil)
+    (goto-char 59)
+    (delete-char 3)
+    (goto-char 28)
+    (widen)
+    (narrow-to-region 13 7)
+    (goto-char 11)
+    (insert ".")
+    (goto-char 9)
+    (delete-char 3)
+    (goto-char 8)
+    (delete-char 0)
+    (goto-char 7)
+    (insert ".............")
+    (goto-char 9)
+    (insert "..........")
+    (goto-char 22)
+    (delete-char 1)
+    (goto-char 31)
+    (delete-char 2)
+    (goto-char 22)
+    (insert ".........")
+    (goto-char 33)
+    (delete-char 1)
+    (goto-char 29)
+    (widen)
+    (narrow-to-region 59 51)
+    (goto-char 52)
+    (insert ".........")
+    (goto-char 53)
+    (insert "........")
+    (goto-char 53)
+    (delete-char 4)
+    (goto-char 54)
+    (insert "........")
+    (goto-char 53)
+    (insert "....")
+    (goto-char 75)
+    (widen)
+    (goto-char 70)
+    (delete-char 2)
+    (goto-char 108)
+    (delete-char 1)
+    (goto-char 80)
+    (widen)
+    (goto-char 70)
+    (widen)
+    (narrow-to-region 49 63)
+    (goto-char 49)
+    (insert "...")
+    (goto-char 66)
+    (delete-char 0)
+    (goto-char 63)
+    (delete-char 3)
+    (goto-char 59)
+    (insert "..........")
+    (goto-char 56)
+    (delete-char 6)
+    (goto-char 60)
+    (insert ".........")
+    (goto-char 62)
+    (widen)
+    (goto-char 58)
+    (insert ".............")
+    (goto-char 105)
+    (widen)
+    (narrow-to-region 94 109)
+    (goto-char 103)
+    (insert "............")
+    (should
+     (equal
+      (test-overlay-regions)
+      '((3 . 134)
+        (6 . 125)
+        (38 . 141)
+        (39 . 118)
+        (39 . 128)
+        (39 . 128)
+        (40 . 146)
+        (43 . 145)
+        (101 . 138)
+        (103 . 103))))))
+
 ;;; buffer-tests.el ends here
-- 
2.39.2