lisp/version.el

   1 ;;; version.el --- record version number of Emacs -*- no-byte-compile: t -*-
   2
   3 ;; Copyright (C) 1985, 1992, 1994, 1995, 1999, 2000, 2001, 2002,
   4 ;;   2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
   5
   6 ;; Maintainer: FSF
   7 ;; Keywords: internal
   8
   9 ;; This file is part of GNU Emacs.
  10
  11 ;; GNU Emacs is free software; you can redistribute it and/or modify
  12 ;; it under the terms of the GNU General Public License as published by
  13 ;; the Free Software Foundation; either version 2, or (at your option)
  14 ;; any later version.
  15
  16 ;; GNU Emacs is distributed in the hope that it will be useful,
  17 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19 ;; GNU General Public License for more details.
  20
  21 ;; You should have received a copy of the GNU General Public License
  22 ;; along with GNU Emacs; see the file COPYING.  If not, write to the
  23 ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  24 ;; Boston, MA 02110-1301, USA.
  25
  26 ;;; Commentary:
  27
  28 ;;; Code:
  29
  30 (defconst emacs-copyright "Copyright (C) 2007 Free Software Foundation, Inc."
  31   "Short copyright string for this version of Emacs.")
  32
  33 (defconst emacs-version "22.1.50" "\
  34 Version numbers of this version of Emacs.")
  35
  36 (defconst emacs-major-version
  37   (progn (string-match "^[0-9]+" emacs-version)
  38          (string-to-number (match-string 0 emacs-version)))
  39   "Major version number of this version of Emacs.
  40 This variable first existed in version 19.23.")
  41
  42 (defconst emacs-minor-version
  43   (progn (string-match "^[0-9]+\\.\\([0-9]+\\)" emacs-version)
  44          (string-to-number (match-string 1 emacs-version)))
  45   "Minor version number of this version of Emacs.
  46 This variable first existed in version 19.23.")
  47
  48 (defconst emacs-build-time (current-time) "\
  49 Time at which Emacs was dumped out.")
  50
  51 (defconst emacs-build-system (system-name))
  52
  53 (defun emacs-version (&optional here) "\
  54 Return string describing the version of Emacs that is running.
  55 If optional argument HERE is non-nil, insert string at point.
  56 Don't use this function in programs to choose actions according
  57 to the system configuration; look at `system-configuration' instead."
  58   (interactive "P")
  59   (let ((version-string
  60          (format (if (not (interactive-p))
  61                      "GNU Emacs %s (%s%s%s)\n of %s on %s"
  62                    "GNU Emacs %s (%s%s%s) of %s on %s")
  63                  emacs-version
  64                  system-configuration
  65                  (cond ((featurep 'motif)
  66                         (concat ", " (substring motif-version-string 4)))
  67                        ((featurep 'gtk)
  68                         (concat ", GTK+ Version " gtk-version-string))
  69                        ((featurep 'x-toolkit) ", X toolkit")
  70                        ((boundp 'mac-carbon-version-string)
  71                         (concat ", Carbon Version " mac-carbon-version-string))
  72                        (t ""))
  73                  (if (and (boundp 'x-toolkit-scroll-bars)
  74                           (memq x-toolkit-scroll-bars '(xaw xaw3d)))
  75                      (format ", %s scroll bars"
  76                              (capitalize (symbol-name x-toolkit-scroll-bars)))
  77                    "")
  78                  (format-time-string "%Y-%m-%d" emacs-build-time)
  79                  emacs-build-system)))
  80     (if here
  81         (insert version-string)
  82       (if (interactive-p)
  83           (message "%s" version-string)
  84         version-string))))
  85
  86 ;; We hope that this alias is easier for people to find.
  87 (defalias 'version 'emacs-version)
  88
  89 ;; We put version info into the executable in the form that `ident' uses.
  90 (or (memq system-type '(vax-vms windows-nt))
  91     (purecopy (concat "\n$Id: " (subst-char-in-string ?\n ?\s (emacs-version))
  92                       " $\n")))
  93
  94 ;;Local variables:
  95 ;;version-control: never
  96 ;;End:
  97
  98 ;; arch-tag: e60dc445-6218-4a4c-a7df-f15a818642a0
  99 ;;; version.el ends here