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Conditionalise the old-* functions and byte codes at compile time. src/ChangeLog addition: 2011-03-15 Aidan Kehoe <kehoea@parhasard.net> * config.h.in (SUPPORT_CONFOUNDING_FUNCTIONS): New #define, equivalent NEED_TO_HANDLE_21_4_CODE by default, describing whether this XEmacs should support the old-eq, old-equal and related functions and byte codes. * bytecode.c (UNUSED): Only interpret old-eq, old-equal, old-memq if SUPPORT_CONFOUNDING_FUNCTIONS is defined. * data.c: Move Fold_eq to fns.c with the rest of the Fold_* functions. * fns.c: * fns.c (Fmemq): * fns.c (memq_no_quit): * fns.c (assoc_no_quit): * fns.c (Frassq): * fns.c (Fequal): * fns.c (Fold_equal): * fns.c (syms_of_fns): Group old-eq, old-equal, old-memq etc together, surround them with #ifdef SUPPORT_CONFOUNDING_FUNCTIONS. lisp/ChangeLog addition: 2011-03-15 Aidan Kehoe <kehoea@parhasard.net> * bytecomp.el: Don't generate the old-eq, old-memq, old-equal bytecodes any more, but keep the information about them around for the sake of the disassembler. man/ChangeLog addition: 2011-03-15 Aidan Kehoe <kehoea@parhasard.net> * lispref/objects.texi (Character Type): * lispref/objects.texi (Equality Predicates): No longer document `old-eq', `old-equal', they haven't been used in years. tests/ChangeLog addition: 2011-03-17 Aidan Kehoe <kehoea@parhasard.net> * automated/lisp-tests.el: Only test the various old-* function if old-eq is bound and a subr.
author Aidan Kehoe <kehoea@parhasard.net>
date Thu, 17 Mar 2011 20:13:00 +0000
parents 023b83f4e54b
children 308d34e9f07d
line wrap: on
line source

;;; gpm.el --- Support the mouse when emacs run on a Linux console.

;; Copyright (C) 1999 Free Software Foundation

;; Author: William Perry <wmperry@gnu.org>
;; Keywords: mouse, terminals

;; This file is part of XEmacs.

;; XEmacs is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation; either version 2, or (at your option)
;; any later version.

;; XEmacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;; GNU General Public License for more details.

;; You should have received a copy of the GNU General Public License
;; along with XEmacs; see the file COPYING.  If not, write to the
;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
;; Boston, MA 02111-1307, USA.

(defvar gpm-enabled-devices (make-hash-table :test 'eq
					     :size 13
					     :weakness 'key)
  "A hash table of devices with GPM currently turned on.")
 
(defun gpm-mode (&optional arg device)
  "Toggle GPM mouse mode.
With prefix arg, turn GPM mouse mode on if and only if arg is positive."
  (interactive (list current-prefix-arg (selected-device)))
  (with-fboundp 'gpm-enable
    (cond
     ((null arg)				; Toggle
      (if (gethash device gpm-enabled-devices)
	  (progn
	    (gpm-enable device nil)
	    (remhash device gpm-enabled-devices))
	(gpm-enable device t)
	(puthash device t gpm-enabled-devices)))
     ((> arg 0)				; Turn on
      (gpm-enable device t)
      (puthash device t gpm-enabled-devices))
     ((gethash device gpm-enabled-devices) ; Turn off
      (gpm-enable device nil)
      (remhash device gpm-enabled-devices)))))

(defun turn-on-gpm-mouse-tracking (&optional device)
  ;; Enable mouse tracking on linux console
  (gpm-mode 5 device))

(defun turn-off-gpm-mouse-tracking (&optional device)
  ;; Disable mouse tracking on linux console
  (gpm-mode -5 device))

(defun gpm-is-supported-p (device)
  "Returns non-nil if GPM is usable right now on DEVICE in this XEmacs session.
This checks whether GPM support was compiled in, TTY support was
compiled in, XEmacs is running on Linux, the current console/device is
TTY, and its terminal type has been set to `linux'."
  (and (not noninteractive)	; Don't want to do this in batch mode
       (fboundp 'gpm-enable)	; Must have C-level GPM support
       (eq system-type 'linux)	; Must be running linux
       (eq (device-type device) 'tty) ; on a tty
       (equal "linux" (declare-fboundp ; an a linux terminal type
		       (console-tty-terminal-type (device-console device))))))
  
(defun gpm-create-device-hook (device)
  (if (gpm-is-supported-p device)
      (turn-on-gpm-mouse-tracking device)))

(defun gpm-delete-device-hook (device)
  (if (gpm-is-supported-p device)
      (turn-off-gpm-mouse-tracking device)))

;; Restore normal mouse behavior outside Emacs

(add-hook 'suspend-hook 'turn-off-gpm-mouse-tracking)
(add-hook 'suspend-resume-hook 'turn-on-gpm-mouse-tracking)
(add-hook 'create-device-hook 'gpm-create-device-hook)
(add-hook 'delete-device-hook 'gpm-delete-device-hook)

(provide 'gpm)