23.0.60; customize or whatever to disable gpm-mouse-mode

23.0.60; customize or whatever to disable gpm-mouse-mode

[Kevin Ryde]

I had some trouble disabling gpm-mouse-mode, which is on by default in
the recent cvs.

I tried M-x customize-variable gpm-mouse-mode and saving, which turned
it off, but on the next startup it was enabled again.  Then I tried
"(gpm-mouse-mode 0)" in my .emacs, but that didn't have any effect at
all.

I suspect terminal-init-linux is forcibly turning it on after .emacs and
customizations have run.

I wonder if a saved customize could work in the next session.  Or
alternatively have some guidance in the docstring or manual on
disabling.  (I got what I wanted for the moment under term-setup-hook.
I like the gpm/kernel default selection stuff and get fairly annoyed by
programs that take it over with their own ideas :-).

I saw frames.texi mentions t-mouse-mode, perhaps it could have a couple
of words about it being enabled by default now, if that's going to be
the case (still as/when available, of course).




In GNU Emacs 23.0.60.1 (i586-pc-linux-gnu, GTK+ Version 2.12.9)
 of 2008-06-01 on blah.blah
configured using `configure  'CFLAGS=-O -g' '--prefix=/down/emacs/b/inst' '--with-x-toolkit=gtk''

Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: nil
  value of $LC_CTYPE: nil
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: nil
  value of $LANG: en_AU
  value of $XMODIFIERS: nil
  locale-coding-system: iso-latin-1-unix
  default-enable-multibyte-characters: t

Major mode: Lisp Interaction

Minor modes in effect:
  show-paren-mode: t
  file-name-shadow-mode: t
  global-auto-composition-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  line-number-mode: t
  transient-mark-mode: t

Recent input:
ESC x r e p o r t - e m a TAB RET

Recent messages:
("/down/emacs/b/src/emacs")

Re: 23.0.60; customize or whatever to disable gpm-mouse-mode

[Stefan Monnier]

> I had some trouble disabling gpm-mouse-mode, which is on by default in
> the recent cvs.

> I tried M-x customize-variable gpm-mouse-mode and saving, which turned
> it off, but on the next startup it was enabled again.  Then I tried
> "(gpm-mouse-mode 0)" in my .emacs, but that didn't have any effect at
> all.

  (defalias 'gpm-mouse-mode 'ignore)

will do the trick.  But no, this is not the way it should be, I agree.
Can you try the patch below to see if it works more like what you'd expect?


        Stefan


Index: lisp/t-mouse.el
===================================================================
RCS file: /sources/emacs/emacs/lisp/t-mouse.el,v
retrieving revision 1.21
diff -u -r1.21 t-mouse.el
--- lisp/t-mouse.el	6 May 2008 07:57:53 -0000	1.21
+++ lisp/t-mouse.el	10 Jun 2008 21:12:51 -0000
@@ -41,6 +41,27 @@
 ;; Prevent warning when compiling in an Emacs without gpm support.
 (declare-function gpm-mouse-start "term.c" ())
 
+(defun gpm-mouse-enable ()
+  "Try to enable gpm mouse support on the current terminal."
+  (let ((activated nil))
+    (unwind-protect
+        (progn
+          (unless (fboundp 'gpm-mouse-start)
+            (error "Emacs must be built with Gpm to use this mode"))
+          (when gpm-mouse-mode
+            (gpm-mouse-start)
+            (set-terminal-parameter nil 'gpm-mouse-active t)
+            (setq activated t)))
+      ;; If something failed to turn it on, try to turn it off as well,
+      ;; just in case.
+      (unless activated (gpm-mouse-disable)))))
+
+(defun gpm-mouse-disable ()
+  "Try to disable gpm mouse support on the current terminal."
+  (when (fboundp 'gpm-mouse-stop)
+    (gpm-mouse-stop))
+  (set-terminal-parameter nil 'gpm-mouse-active nil))
+
 ;;;###autoload
 (define-obsolete-function-alias 't-mouse-mode 'gpm-mouse-mode "23.1")
 ;;;###autoload
@@ -52,21 +73,14 @@
 This allows the use of the mouse when operating on a GNU/Linux console,
 in the same way as you can use the mouse under X11.
 It relies on the `gpm' daemon being activated."
-  :global t :group 'mouse
-  (let ((activated nil))
-    (unwind-protect
-        (progn
-          (unless (fboundp 'gpm-mouse-start)
-            (error "Emacs must be built with Gpm to use this mode"))
-          (when gpm-mouse-mode
-            (gpm-mouse-start)
-            (setq activated t)))
-      ;; If the user asked to turn it off do that.
-      ;; If something failed to turn it on, try to turn it off as well,
-      ;; just in case.
-      (when (and (fboundp 'gpm-mouse-stop) (not activated))
-        (setq gpm-mouse-mode nil)
-        (gpm-mouse-stop)))))
+  :global t :group 'mouse :init-value t
+  (dolist (terminal (terminal-list))
+    (when (and (eq t (terminal-live-p terminal))
+               (not (eq gpm-mouse-mode
+                        (terminal-parameter terminal 'gpm-mouse-active))))
+      ;; Simulate selecting a terminal by selecting one of its frames ;-(
+      (with-selected-frame (car (frames-on-display-list terminal))
+        (if gpm-mouse-mode (gpm-mouse-enable) (gpm-mouse-disable))))))
 
 (provide 't-mouse)
 
Index: lisp/term/linux.el
===================================================================
RCS file: /sources/emacs/emacs/lisp/term/linux.el,v
retrieving revision 1.13
diff -u -r1.13 linux.el
--- lisp/term/linux.el	7 Jun 2008 02:42:21 -0000	1.13
+++ lisp/term/linux.el	10 Jun 2008 21:12:51 -0000
@@ -9,7 +9,7 @@
   ;; It can't really display underlines.
   (tty-no-underline)
 
-  (ignore-errors (gpm-mouse-mode 1))
+  (ignore-errors (if gpm-mouse-mode (gpm-mouse-enable)))
 
   ;; Make Latin-1 input characters work, too.
   ;; Meta will continue to work, because the kernel