From: Richard M. Stallman <rms@gnu.org>
Date: Wed, 16 Mar 1994 23:41:32 +0000 (+0000)
Subject: (undo): Don't let the undo entries for the undo
X-Git-Tag: emacs-19.34~9466
X-Git-Url: http://git.eshelyaron.com/gitweb/?a=commitdiff_plain;h=2512c9f0f0e6cc71c601ffdb0690b9cf5642734b;p=emacs.git

(undo): Don't let the undo entries for the undo
contain a specific buffer position.  Delete it if there is one.
---

diff --git a/lisp/simple.el b/lisp/simple.el
index 66f0003bf4d..cc2e4c6d801 100644
--- a/lisp/simple.el
+++ b/lisp/simple.el
@@ -615,6 +615,16 @@ A numeric argument serves as a repeat count."
 	(progn (undo-start)
 	       (undo-more 1)))
     (undo-more (or arg 1))
+    ;; Don't specify a position in the undo record for the undo command.
+    ;; Instead, undoing this should move point to where the change is.
+    (let ((tail buffer-undo-list)
+	  done)
+      (while (and tail (not done) (not (null (car tail))))
+	(if (integerp (car tail))
+	    (progn
+	      (setq done t)
+	      (setq buffer-undo-list (delq (car tail) buffer-undo-list))))
+	(setq tail (cdr tail))))
     (and modified (not (buffer-modified-p))
 	 (delete-auto-save-file-if-necessary recent-save)))
   ;; If we do get all the way thru, make this-command indicate that.