* callint.c (Fcall_interactively): For '^' just delegate the work to

handle-shift-selection.
(syms_of_callint): Move declaration of shift-select-mode to simple.el.
* simple.el (shift-select-mode): Move declaration from callint.c.
(handle-shift-selection): Remove `deactivate' arg and check
shift-select-mode instead.

lisp/ChangeLog

+2009-03-26  Stefan Monnier  <monnier@iro.umontreal.ca>
+
+	* simple.el (shift-select-mode): Move declaration from callint.c.
+	(handle-shift-selection): Remove `deactivate' arg and check
+	shift-select-mode instead.
+
 2009-03-26  Juanma Barranquero  <lekktu@gmail.com>
 	* align.el (align-large-region, align-perl-modes, align-rules-list)

lisp/simple.el

@@ -3746,33 +3746,44 @@ mode temporarily."
 	  (t (activate-mark)))
     nil))
 
-(defun handle-shift-selection (&optional deactivate)
+(defvar shift-select-mode t
+  "When non-nil, shifted motion keys activate the mark momentarily.
+
+While the mark is activated in this way, any shift-translated point
+motion key extends the region, and if Transient Mark mode was off, it
+is temporarily turned on.  Furthermore, the mark will be deactivated
+by any subsequent point motion key that was not shift-translated, or
+by any action that normally deactivates the mark in Transient Mark mode.
+
+See `this-command-keys-shift-translated' for the meaning of
+shift-translation.")
+
+(defun handle-shift-selection ()
   "Activate/deactivate mark depending on invocation thru ``shift translation.''
 
 \(See `this-command-keys-shift-translated' for the meaning of
 shift translation.)
 
 This is called whenever a command with a `^' character in its
-`interactive' spec is invoked while `shift-select-mode' is
-non-nil.
+`interactive' spec is invoked.
+Its behavior is controlled by `shift-select-mode'.
 
 If the command was invoked through shift translation, set the
 mark and activate the region temporarily, unless it was already
 set in this way.  If the command was invoked without shift
-translation, or if the optional argument DEACTIVATE is non-nil,
+translation, or if the region was activated by the mouse,
 deactivate the mark if the region is temporarily active."
-  (cond ((and this-command-keys-shift-translated
-	      (null deactivate))
-	 (unless (and mark-active
-		      (eq (car-safe transient-mark-mode) 'only))
-	   (setq transient-mark-mode
-		 (cons 'only
-		       (unless (eq transient-mark-mode 'lambda)
-			 transient-mark-mode)))
-	   (push-mark nil nil t)))
-	((eq (car-safe transient-mark-mode) 'only)
-	 (setq transient-mark-mode (cdr transient-mark-mode))
-	 (deactivate-mark))))
+  (cond ((and shift-select-mode this-command-keys-shift-translated)
+         (unless (and mark-active
+                      (eq (car-safe transient-mark-mode) 'only))
+           (setq transient-mark-mode
+                 (cons 'only
+                       (unless (eq transient-mark-mode 'lambda)
+                         transient-mark-mode)))
+           (push-mark nil nil t)))
+        ((eq (car-safe transient-mark-mode) 'only)
+         (setq transient-mark-mode (cdr transient-mark-mode))
+         (deactivate-mark))))
 
 (define-minor-mode transient-mark-mode
   "Toggle Transient Mark mode.

src/ChangeLog

+2009-03-26  Stefan Monnier  <monnier@iro.umontreal.ca>
+
+	* callint.c (Fcall_interactively): For '^' just delegate the work to
+	handle-shift-selection.
+	(syms_of_callint): Move declaration of shift-select-mode to simple.el.
+
 2009-03-24  Chong Yidong  <cyd@stupidchicken.com>
 	* editfns.c (Ffloat_time): Doc fix (Bug#2768).

src/callint.c

@@ -51,7 +51,7 @@ extern Lisp_Object Qface, Qminibuffer_prompt;
    even if mark_active is 0.  */
 Lisp_Object Vmark_even_if_inactive;
 
-Lisp_Object Vshift_select_mode, Qhandle_shift_selection;
+Lisp_Object Qhandle_shift_selection;
 
 Lisp_Object Vmouse_leave_buffer_hook, Qmouse_leave_buffer_hook;
 
@@ -454,14 +454,7 @@ invoke it.  If KEYS is omitted or nil, the return value of
 	}
       else if (*string == '^')
 	{
-	  if (! NILP (Vshift_select_mode))
-	    call1 (Qhandle_shift_selection, Qnil);
-	  /* Even if shift-select-mode is off, temporarily active
-	     regions could be set using the mouse, and should be
-	     deactivated.  */
-	  else if (CONSP (Vtransient_mark_mode)
-		   && EQ (XCAR (Vtransient_mark_mode), Qonly))
-	    call1 (Qhandle_shift_selection, Qt);
+	  call0 (Qhandle_shift_selection);
 	  string++;
 	}
       else break;
@@ -994,20 +987,6 @@ turns off region highlighting, but commands that use the mark
 behave as if the mark were still active.  */);
   Vmark_even_if_inactive = Qt;
 
-  DEFVAR_LISP ("shift-select-mode", &Vshift_select_mode,
-	       doc: /* When non-nil, shifted motion keys activate the mark momentarily.
-
-While the mark is activated in this way, any shift-translated point
-motion key extends the region, and if Transient Mark mode was off, it
-is temporarily turned on.  Furthermore, the mark will be deactivated
-by any subsequent point motion key that was not shift-translated, or
-by any action that normally deactivates the mark in Transient Mark
-mode.
-
-See `this-command-keys-shift-translated' for the meaning of
-shift-translation.  */);
-  Vshift_select_mode = Qt;
-
   DEFVAR_LISP ("mouse-leave-buffer-hook", &Vmouse_leave_buffer_hook,
 	       doc: /* Hook to run when about to switch windows with a mouse command.
 Its purpose is to give temporary modes such as Isearch mode