Marking with the mouse

["Stefan Monnier" <monnier@IRO.UMontreal.CA>]

Someone in gnu.emacs.help recently complained about the weird behavior of
the highlighting when you drag the mouse while pressing mouse-1:
the selected text is highlighted during the drag but the highlighting
disappears immediately after that.  I was thinking that maybe it's a good
idea to use the transient transient-mark-mode in this case, so that marking
with the mouse always behaves like transient-mark-mode.  This is based on
the idea that those who dislike transient-mark-mode probably don't often use
the mouse to select the region.

Any comment ?


        Stefan


--- mouse.el.~1.243.~	Mon Sep  8 19:10:04 2003
+++ mouse.el	Tue Sep  9 16:34:00 2003
@@ -1,6 +1,6 @@
 ;;; mouse.el --- window system-independent mouse support
 
-;; Copyright (C) 1993, 1994, 1995, 1999, 2000, 2001
+;; Copyright (C) 1993, 1994, 1995, 1999, 2000, 2001, 2003
 ;;   Free Software Foundation, Inc.
 
 ;; Maintainer: FSF
@@ -622,6 +622,8 @@
     (mouse-set-region-1)))
 
 (defun mouse-set-region-1 ()
+  ;; Set transient-mark-mode for a little while.
+  (setq transient-mark-mode 'lambda)
   (setq mouse-last-region-beg (region-beginning))
   (setq mouse-last-region-end (region-end))
   (setq mouse-last-region-tick (buffer-modified-tick)))
@@ -702,8 +704,8 @@
 If the click is in the echo area, display the `*Messages*' buffer."
   (interactive "e")
   (let ((w (posn-window (event-start start-event))))
-    (if (not (or (not (window-minibuffer-p w))
-		 (minibuffer-window-active-p w)))
+    (if (and (window-minibuffer-p w)
+	     (not (minibuffer-window-active-p w)))
 	(save-excursion
 	  (read-event)
 	  (set-buffer "*Messages*")
@@ -858,8 +860,7 @@
 			 (or end-point
 			     (= (window-start start-window)
 				start-window-start)))
-		(setq unread-command-events
-		      (cons event unread-command-events)))))
+		(push event unread-command-events))))
 	(delete-overlay mouse-drag-overlay)))))
 \f
 ;; Commands to handle xterm-style multiple clicks.