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, 2008, 2009
   5 ;;   Free Software Foundation, Inc.
   6
   7 ;; Maintainer: FSF
   8 ;; Keywords: internal
   9
  10 ;; This file is part of GNU Emacs.
  11
  12 ;; GNU Emacs is free software: you can redistribute it and/or modify
  13 ;; it under the terms of the GNU General Public License as published by
  14 ;; the Free Software Foundation, either version 3 of the License, or
  15 ;; (at your option) any later version.
  16
  17 ;; GNU Emacs is distributed in the hope that it will be useful,
  18 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  19 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20 ;; GNU General Public License for more details.
  21
  22 ;; You should have received a copy of the GNU General Public License
  23 ;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
  24
  25 ;;; Commentary:
  26
  27 ;;; Code:
  28
  29 (defconst emacs-copyright "Copyright (C) 2009 Free Software Foundation, Inc."
  30   "Short copyright string for this version of Emacs.")
  31
  32 (defconst emacs-version "23.0.95" "\
  33 Version numbers of this version of Emacs.")
  34
  35 (defconst emacs-major-version
  36   (progn (string-match "^[0-9]+" emacs-version)
  37          (string-to-number (match-string 0 emacs-version)))
  38   "Major version number of this version of Emacs.
  39 This variable first existed in version 19.23.")
  40
  41 (defconst emacs-minor-version
  42   (progn (string-match "^[0-9]+\\.\\([0-9]+\\)" emacs-version)
  43          (string-to-number (match-string 1 emacs-version)))
  44   "Minor version number of this version of Emacs.
  45 This variable first existed in version 19.23.")
  46
  47 (defconst emacs-build-time (current-time) "\
  48 Time at which Emacs was dumped out.")
  49
  50 (defconst emacs-build-system (system-name))
  51
  52 (defun emacs-version (&optional here) "\
  53 Return string describing the version of Emacs that is running.
  54 If optional argument HERE is non-nil, insert string at point.
  55 Don't use this function in programs to choose actions according
  56 to the system configuration; look at `system-configuration' instead."
  57   (interactive "P")
  58   (let ((version-string
  59          (format (if (not (interactive-p))
  60                      "GNU Emacs %s (%s%s%s)\n of %s on %s"
  61                    "GNU Emacs %s (%s%s%s) of %s on %s")
  62                  emacs-version
  63                  system-configuration
  64                  (cond ((featurep 'motif)
  65                         (concat ", " (substring motif-version-string 4)))
  66                        ((featurep 'gtk)
  67                         (concat ", GTK+ Version " gtk-version-string))
  68                        ((featurep 'x-toolkit) ", X toolkit")
  69                        ((featurep 'ns)
  70                         (format ", NS %s" ns-version-string))
  71                        (t ""))
  72                  (if (and (boundp 'x-toolkit-scroll-bars)
  73                           (memq x-toolkit-scroll-bars '(xaw xaw3d)))
  74                      (format ", %s scroll bars"
  75                              (capitalize (symbol-name x-toolkit-scroll-bars)))
  76                    "")
  77                  (format-time-string "%Y-%m-%d" emacs-build-time)
  78                  emacs-build-system)))
  79     (if here
  80         (insert version-string)
  81       (if (interactive-p)
  82           (message "%s" version-string)
  83         version-string))))
  84
  85 ;; We hope that this alias is easier for people to find.
  86 (defalias 'version 'emacs-version)
  87
  88 ;; We put version info into the executable in the form that `ident' uses.
  89 (or (eq system-type 'windows-nt)
  90     (purecopy (concat "\n$Id: " (subst-char-in-string ?\n ?\s (emacs-version))
  91                       " $\n")))
  92
  93 ;;Local variables:
  94 ;;version-control: never
  95 ;;End:
  96
  97 ;; arch-tag: e60dc445-6218-4a4c-a7df-f15a818642a0
  98 ;;; version.el ends here