From: Artur Malabarba <bruce.connor.am@gmail.com>
Date: Wed, 6 May 2015 18:27:43 +0000 (+0100)
Subject: * lisp/subr.el (delete-dups): Make it destructive again.
X-Git-Tag: emacs-25.0.90~2176
X-Git-Url: http://git.eshelyaron.com/gitweb/?a=commitdiff_plain;h=f201bf6a5050d575dfc759fa23955fab0fbcfcb9;p=emacs.git

* lisp/subr.el (delete-dups): Make it destructive again.
---

diff --git a/lisp/subr.el b/lisp/subr.el
index 591980d03fa..a32fb968365 100644
--- a/lisp/subr.el
+++ b/lisp/subr.el
@@ -424,12 +424,12 @@ one is kept."
           (unless (gethash elt hash)
             (puthash elt elt hash)
             (push elt res)))
-        (nreverse res))
+        (setcdr list (cdr (nreverse res))))
     (let ((tail list))
       (while tail
         (setcdr tail (delete (car tail) (cdr tail)))
-        (setq tail (cdr tail))))
-    list))
+        (setq tail (cdr tail)))))
+  list)
 
 ;; See http://lists.gnu.org/archive/html/emacs-devel/2013-05/msg00204.html
 (defun delete-consecutive-dups (list &optional circular)