Re: Move selection up, down

[Andreas Politz <politza@fh-trier.de>]

jiri.pejchal@gmail.com wrote:
> Hi,
> 
> in Netbeans when you press M-S-up/M-S-down you move the selected text
> up/down. When nothing is selected it moves the current line.
> 
> With C-S-up/C-S-down you copy the selection up/down. When nothings is
> selected it copies the current line up/down.
> 
> Is such functionality available in emacs?
> 
> Jiri Pejchal


Heres some elisp. It binds M-S-up/down to commands
which move the active region (with respect to columns)
or the current line prefix arg lines up or down.
Have fun.
-ap

(defun move-text-internal (arg)
   (cond
    ((and mark-active transient-mark-mode)
     (if (> (point) (mark))
    	(exchange-point-and-mark))
     (let ((column (current-column))
    	  (text (delete-and-extract-region (point) (mark))))
       (forward-line arg)
       (move-to-column column t)
       (set-mark (point))
       (insert text)
       (exchange-point-and-mark)
       (setq deactivate-mark nil)))
    (t
     (beginning-of-line)
     (when (or (> arg 0) (not (bobp)))
       (forward-line)
       (when (or (< arg 0) (not (eobp)))
    	(transpose-lines arg))
       (forward-line -1)))))

(defun move-text-down (arg)
   "Move region (transient-mark-mode active) or current line
  arg lines down."
   (interactive "*p")
   (move-text-internal arg))

(defun move-text-up (arg)
   "Move region (transient-mark-mode active) or current line
  arg lines up."
   (interactive "*p")
   (move-text-internal (- arg)))

(global-set-key [\M-\S-up] 'move-text-up)
(global-set-key [\M-\S-down] 'move-text-down)