(dired-get-filename)<declare-function>:

[bpt/emacs.git] / lisp / misc.el

diff --git a/lisp/misc.el b/lisp/misc.el
index ad7de36..ffc1929 100644 (file)
--- a/lisp/misc.el
+++ b/lisp/misc.el
@@ -1,7 +1,7 @@
 ;;; misc.el --- some nonstandard basic editing commands for Emacs
 
 ;; Copyright (C) 1989, 2001, 2002, 2003, 2004, 2005,
-;;   2006, 2007, 2008 Free Software Foundation, Inc.
+;;   2006, 2007, 2008, 2009 Free Software Foundation, Inc.
 
 ;; Maintainer: FSF
 ;; Keywords: convenience
@@ -106,6 +106,29 @@ With argument, do this that many times."
   (interactive "p")
   (forward-to-word (- arg)))
 
+;;;###autoload
+(defun butterfly ()
+  "Use butterflies to flip the desired bit on the drive platter.
+Open hands and let the delicate wings flap once.  The disturbance
+ripples outward, changing the flow of the eddy currents in the
+upper atmosphere.  These cause momentary pockets of higher-pressure
+air to form, which act as lenses that deflect incoming cosmic rays,
+focusing them to strike the drive platter and flip the desired bit.
+You can type `M-x butterfly C-M-c' to run it.  This is a permuted
+variation of `C-x M-c M-butterfly' from url `http://xkcd.com/378/'."
+  (interactive)
+  (if (yes-or-no-p "Do you really want to unleash the powers of the butterfly? ")
+      (progn
+       (switch-to-buffer (get-buffer-create "*butterfly*"))
+       (erase-buffer)
+       (sit-for 0)
+       (animate-string "Amazing physics going on..."
+                       (/ (window-height) 2) (- (/ (window-width) 2) 12))
+       (sit-for (* 5 (/ (abs (random)) (float most-positive-fixnum))))
+       (message "Successfully flipped one bit!"))
+    (message "Well, then go to xkcd.com!")
+    (browse-url "http://xkcd.com/378/")))
+
 (provide 'misc)
 
 ;; arch-tag: 908f7884-c19e-4388-920c-9cfa425e449b