python-mode: do not deactivate mark when shifting

[David Reitter <david.reitter@gmail.com>]

Shifting the region in python is a common task, and more often than  
not, the command needs to be repeated on the same region. This patch  
leaves the region (visually) active rather than deactivating the  
mark. (Deactivating the mark suggests to transient-mark-mode / cua- 
mode users that the text needs to be selected again before the  
command can be repeated.)

Please consider installing this if it's not a "dangerous" change.


*** lisp/ChangeLog	19 Feb 2007 15:25:40 +0000	1.10707
--- lisp/ChangeLog	19 Feb 2007 15:28:53 +0000	
***************
*** 1,3 ****
--- 1,9 ----
+ 2007-02-19  David Reitter  <david.reitter@gmail.com>
+
+ 	* progmodes/python.el (python-shift-left, python-shift-right): Do
+ 	not deactivate the mark after shifting region so that the command
+ 	can be repeated with the region remaining (visually) active.
+
   2007-02-19  Juanma Barranquero  <lekktu@gmail.com>

   	* speedbar.el (speedbar-frame-mode, speedbar-frame-width)
Index: python.el
===================================================================
RCS file: /sources/emacs/emacs/lisp/progmodes/python.el,v
retrieving revision 1.53
diff -c -r1.53 python.el
*** lisp/progmodes/python.el	21 Jan 2007 03:20:44 -0000	1.53
--- lisp/progmodes/python.el	19 Feb 2007 15:26:01 -0000
***************
*** 1784,1790 ****
   		 (not (looking-at "[ \t]*$")))
   	    (error "Can't shift all lines enough"))
   	(forward-line))
!       (indent-rigidly start end (- count)))))

   (add-to-list 'debug-ignored-errors "^Can't shift all lines enough")

--- 1784,1791 ----
   		 (not (looking-at "[ \t]*$")))
   	    (error "Can't shift all lines enough"))
   	(forward-line))
!       (indent-rigidly start end (- count))))
!   (setq deactivate-mark nil))

   (add-to-list 'debug-ignored-errors "^Can't shift all lines enough")

***************
*** 1799,1805 ****
     (if count
         (setq count (prefix-numeric-value count))
       (setq count python-indent))
!   (indent-rigidly start end count))

   (defun python-outline-level ()
     "`outline-level' function for Python mode.
--- 1800,1807 ----
     (if count
         (setq count (prefix-numeric-value count))
       (setq count python-indent))
!   (indent-rigidly start end count)
!   (setq deactivate-mark nil))

   (defun python-outline-level ()
     "`outline-level' function for Python mode.