Fix wrong behavior of 'outline-headers-as-kill' command (Bug#30209)

* outline.el (outline-headers-as-kill): Fix heading duplication.

1 files changed, 20 insertions, 22 deletions

diff --git a/lisp/outline.el b/lisp/outline.el
index 7cf56abd23a..669935bbc12 100644
--- a/lisp/outline.el
+++ b/lisp/outline.el
@@ -1100,28 +1100,26 @@ convenient way to make a table of contents of the buffer."
     (save-restriction
       (narrow-to-region beg end)
       (goto-char (point-min))
-      (let ((buffer (current-buffer))
-            start end)
-        (with-temp-buffer
-          (with-current-buffer buffer
-            ;; Boundary condition: starting on heading:
-            (when (outline-on-heading-p)
-              (outline-back-to-heading)
-              (setq start (point)
-                    end (progn (outline-end-of-heading)
-                               (point)))
-              (insert-buffer-substring buffer start end)
-              (insert "\n\n")))
-          (let ((temp-buffer (current-buffer)))
-            (with-current-buffer buffer
-              (while (outline-next-heading)
-                (unless (outline-invisible-p)
-                  (setq start (point)
-                        end (progn (outline-end-of-heading) (point)))
-                  (with-current-buffer temp-buffer
-                    (insert-buffer-substring buffer start end)
-                    (insert "\n\n"))))))
-          (kill-new (buffer-string)))))))
+      (let ((buffer (current-buffer)) start end)
+        (with-temp-buffer
+          (let ((temp-buffer (current-buffer)))
+            (with-current-buffer buffer
+              ;; Boundary condition: starting on heading:
+              (when (outline-on-heading-p)
+                (outline-back-to-heading)
+                (setq start (point)
+                      end (progn (outline-end-of-heading) (point)))
+                (with-current-buffer temp-buffer
+                  (insert-buffer-substring buffer start end)
+                  (insert "\n\n")))
+              (while (outline-next-heading)
+                (unless (outline-invisible-p)
+                  (setq start (point)
+                        end (progn (outline-end-of-heading) (point)))
+                  (with-current-buffer temp-buffer
+                    (insert-buffer-substring buffer start end)
+                    (insert "\n\n"))))))
+          (kill-new (buffer-string)))))))
 
 (provide 'outline)
 (provide 'noutline)