Some fixes to follow coding conventions in files maintained by FSF.

[bpt/emacs.git] / lisp / play / dissociate.el

diff --git a/lisp/play/dissociate.el b/lisp/play/dissociate.el
index 344d8ef..b8458f6 100644 (file)
--- a/lisp/play/dissociate.el
+++ b/lisp/play/dissociate.el
@@ -1,15 +1,15 @@
-;;; dissociate.el --- scramble text amusingly for Emacs.
-
-;; Maintainer: FSF
-;; Last-Modified: 09 May 1991
+;;; dissociate.el --- scramble text amusingly for Emacs
 
 ;; Copyright (C) 1985 Free Software Foundation, Inc.
 
+;; Maintainer: FSF
+;; Keywords: games
+
 ;; This file is part of GNU Emacs.
 
 ;; GNU Emacs is free software; you can redistribute it and/or modify
 ;; it under the terms of the GNU General Public License as published by
-;; the Free Software Foundation; either version 1, or (at your option)
+;; the Free Software Foundation; either version 2, or (at your option)
 ;; any later version.
 
 ;; GNU Emacs is distributed in the hope that it will be useful,
@@ -18,8 +18,14 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs; see the file COPYING.  If not, write to
-;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
+;; along with GNU Emacs; see the file COPYING.  If not, write to the
+;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+;; Boston, MA 02111-1307, USA.
+
+;;; Commentary:
+
+;; The single entry point, `dissociated-press', applies a travesty
+;; generator to the current buffer.  The results can be quite amusing.
 
 ;;; Code:
 
@@ -40,6 +46,8 @@ Default is 2."
         (move-amount (if (> arg 0) arg (- arg)))
         (search-function (if (> arg 0) 'search-forward 'word-search-forward))
         (last-query-point 0))
+    (if (= (point-max) (point-min))
+       (error "The buffer contains no text to start from"))
     (switch-to-buffer outbuf)
     (erase-buffer)
     (while
@@ -83,13 +91,13 @@ Default is 2."
                                         (funcall move-function
                                                  (- move-amount)))
                                  (point))))
-          (let (ranval)
-            (while (< (setq ranval (random)) 0))
-            (goto-char (1+ (% ranval (1- (point-max))))))
+          (goto-char (1+ (random (1- (point-max)))))
           (or (funcall search-function overlap nil t)
               (let ((opoint (point)))
                 (goto-char 1)
                 (funcall search-function overlap opoint t))))))
       (sit-for 0))))
 
+(provide 'dissociate)
+
 ;;; dissociate.el ends here