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authorLuc Teirlinck <teirllm@auburn.edu>2005-06-24 01:20:14 +0000
committerLuc Teirlinck <teirllm@auburn.edu>2005-06-24 01:20:14 +0000
commit7f72ddd58d4ea61fbbb247f4789aff36adecff58 (patch)
tree5089f83b97bfb1787ec9368359d8c8e29a71f787 /lisp/emacs-lisp/ring.el
parent528b6abcb4703f1825d8e323152f8b93b4bb9ecc (diff)
downloademacs-7f72ddd58d4ea61fbbb247f4789aff36adecff58.tar.gz
(ring-elements): Make it return a list of the elements of RING in
order, and without bogus nil elements.
Diffstat (limited to 'lisp/emacs-lisp/ring.el')
-rw-r--r--lisp/emacs-lisp/ring.el9
1 files changed, 7 insertions, 2 deletions
diff --git a/lisp/emacs-lisp/ring.el b/lisp/emacs-lisp/ring.el
index fce07953ba9..6e0f9cd70b4 100644
--- a/lisp/emacs-lisp/ring.el
+++ b/lisp/emacs-lisp/ring.el
@@ -155,8 +155,13 @@ will be performed."
(aref vec (ring-index index hd ln (length vec))))))
(defun ring-elements (ring)
- "Return a list of the elements of RING."
- (mapcar #'identity (cddr ring)))
+ "Return a list of the elements of RING, in order, newest first."
+ (let ((start (car ring))
+ (size (ring-size ring))
+ (vect (cddr ring))
+ lst)
+ (dotimes (var (cadr ring) lst)
+ (push (aref vect (mod (+ start var) size)) lst))))
;;; provide ourself: