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-rw-r--r--.config/emacs/init.el12
1 files changed, 12 insertions, 0 deletions
diff --git a/.config/emacs/init.el b/.config/emacs/init.el
index d53750e..bc29838 100644
--- a/.config/emacs/init.el
+++ b/.config/emacs/init.el
@@ -93,6 +93,18 @@ buffer suppressed."
(message-log-max nil))
,@body))
+(defun mm-rotate-left (n list)
+ "Rotate the elements of LIST N places to the left."
+ (declare (ftype (function (number (list t)) (list t)))
+ (pure t) (side-effect-free t))
+ (append (nthcdr n list) (butlast list (- (length list) n))))
+
+(defun mm-rotate-right (n list)
+ "Rotate the elements of LIST N places to the right."
+ (declare (ftype (function (number (list t)) (list t)))
+ (pure t) (side-effect-free t))
+ (mm-rotate-left (- (length list) n) list))
+
;;; Silent Native Compilation