(activate-mark-hook, deactivate-mark-hook): Add defvars.

(push-mark-command): Run activate-mark-hook.

lisp/ChangeLog

+2005-03-06  Chong Yidong  <cyd@stupidchicken.com>
+
+	* simple.el (activate-mark-hook, deactivate-mark-hook): Add defvars.
+	(push-mark-command): Run activate-mark-hook.
+
+2005-03-06  Richard M. Stallman  <rms@gnu.org>
+
+	* help-mode.el (help-mode-finish): Don't alter the element
+	in view-return-to-alist if there already is one.
+
+	* jit-lock.el (jit-lock-stealth-fontify): When calling sit-for,
+	make sure the current buffer is the expected one.
+
+	* novice.el (disabled-command-function): Output in *Disabled Command*.
+	Explicitly ignore non-keyboard events, and explicitly handle C-g.
+
+	* textmodes/flyspell.el (flyspell-large-region):
+	Pass args differently for aspell.
+
+	* files.el (mode-require-final-newline): Doc fix.
+
+2005-03-03  Stephan Stahl  <stahl@eos.franken.de> (tiny change)
+
+	* progmodes/which-func.el (which-function): 
+	Specify NOERROR when calling imenu--make-index-alist.
+
 2005-03-05  Stefan Monnier  <monnier@iro.umontreal.ca>
 	* simple.el (normal-erase-is-backspace): Define default value.

lisp/simple.el

@@ -2913,6 +2913,14 @@ START and END specify the portion of the current buffer to be copied."
 (put 'mark-inactive 'error-conditions '(mark-inactive error))
 (put 'mark-inactive 'error-message "The mark is not active now")
 
+(defvar activate-mark-hook nil
+  "Hook run when the mark becomes active.
+It is also run at the end of a command, if the mark is active and
+it is possible that the region may have changed")
+
+(defvar deactivate-mark-hook nil
+  "Hook run when the mark becomes inactive.")
+
 (defun mark (&optional force)
   "Return this buffer's mark value as integer; error if mark inactive.
 If optional argument FORCE is non-nil, access the mark value
@@ -3004,6 +3012,7 @@ Display `Mark set' unless the optional second arg NOMSG is non-nil."
     (if (or arg (null mark) (/= mark (point)))
 	(push-mark nil nomsg t)
       (setq mark-active t)
+      (run-hooks 'activate-mark-hook)
       (unless nomsg
 	(message "Mark activated")))))