;;****************************************************************************
;;FILE:               secouer.el
;;LANGUAGE:           emacs lisp
;;SYSTEM:             POSIX
;;USER-INTERFACE:     NONE
;;DESCRIPTION
;;    
;;    Exports a function "secouer" that will randomize the order of 
;;    internal letters of words in the selected region.
;;    
;;    Eroxtps a funtcion "scuoeer" that wlil raoindmze the oedrr of 
;;    intnaerl letetrs of wrods in the steceeld rgioen.
;;
;;AUTHORS
;;    <PJB> Pascal Bourguignon <pjb@informatimago.com>
;;MODIFICATIONS
;;    2003-12-04 <PJB> Added this comment.
;;BUGS
;;LEGAL
;;    GPL
;;    
;;    Copyright Pascal Bourguignon 2003 - 2003
;;    
;;    This program 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
;;    2 of the License, or (at your option) any later version.
;;    
;;    This program is distributed in the hope that it will be
;;    useful, but WITHOUT ANY WARRANTY; without even the implied
;;    warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
;;    PURPOSE.  See the GNU General Public License for more details.
;;    
;;    You should have received a copy of the GNU General Public
;;    License along with this program; if not, write to the Free
;;    Software Foundation, Inc., 59 Temple Place, Suite 330,
;;    Boston, MA 02111-1307 USA
;;****************************************************************************
(require 'pjb-cl)


(defun melange (str)
  (setq str (copy-seq str))
  (do ((count (+ 3 (random (length str))) (1- count))
       (i (random (length str))  (random (length str)))
       (j (random (length str))  (random (length str))))
      ((< count 0) str)
    (when (/= i j)
      (psetf (char str i) (char str j)
             (char str j) (char str i)))));;melange


(defun secouer (start end)
  (interactive "*r")
  (let ((start (min end start))
        (end (max end start)))
    (goto-char start)
    (while (< (point) end)
      (let* ((start-word (progn (forward-word 1) (forward-word -1) (point)))
             (end-word   (progn (forward-word 1) (point))))
        (when (and (<= end-word end) (<= 4 (- end-word start-word)))
          (let  ((word (buffer-substring (1+ start-word)  (- end-word 1))))
            (message word)
            (delete-region (1+ start-word) (- end-word 1))
            (goto-char (1+ start-word))
            (insert (melange word))
            (goto-char end-word)))))));;secouer

;;;; pjb-secouer.el                   -- 2004-02-22 02:27:40 -- pascal   ;;;;