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 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 3 of the License, or
  14 ;; (at your option) 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.  If not, see <http://www.gnu.org/licenses/>.
  23
  24 ;;; Commentary:
  25
  26 ;;; Code:
  27
  28 (defconst emacs-copyright "Copyright (C) 2008 Free Software Foundation, Inc."
  29   "Short copyright string for this version of Emacs.")
  30
  31 (defconst emacs-version "23.0.60" "\
  32 Version numbers of this version of Emacs.")
  33
  34 (defconst emacs-major-version
  35   (progn (string-match "^[0-9]+" emacs-version)
  36          (string-to-number (match-string 0 emacs-version)))
  37   "Major version number of this version of Emacs.
  38 This variable first existed in version 19.23.")
  39
  40 (defconst emacs-minor-version
  41   (progn (string-match "^[0-9]+\\.\\([0-9]+\\)" emacs-version)
  42          (string-to-number (match-string 1 emacs-version)))
  43   "Minor version number of this version of Emacs.
  44 This variable first existed in version 19.23.")
  45
  46 (defconst emacs-build-time (current-time) "\
  47 Time at which Emacs was dumped out.")
  48
  49 (defconst emacs-build-system (system-name))
  50
  51 (defun emacs-version (&optional here) "\
  52 Return string describing the version of Emacs that is running.
  53 If optional argument HERE is non-nil, insert string at point.
  54 Don't use this function in programs to choose actions according
  55 to the system configuration; look at `system-configuration' instead."
  56   (interactive "P")
  57   (let ((version-string
  58          (format (if (not (interactive-p))
  59                      "GNU Emacs %s (%s%s%s)\n of %s on %s"
  60                    "GNU Emacs %s (%s%s%s) of %s on %s")
  61                  emacs-version
  62                  system-configuration
  63                  (cond ((featurep 'motif)
  64                         (concat ", " (substring motif-version-string 4)))
  65                        ((featurep 'gtk)
  66                         (concat ", GTK+ Version " gtk-version-string))
  67                        ((featurep 'x-toolkit) ", X toolkit")
  68                        ((featurep 'ns)
  69                         (format ", *Step %s" ns-version-string))
  70                        (t ""))
  71                  (if (and (boundp 'x-toolkit-scroll-bars)
  72                           (memq x-toolkit-scroll-bars '(xaw xaw3d)))
  73                      (format ", %s scroll bars"
  74                              (capitalize (symbol-name x-toolkit-scroll-bars)))
  75                    "")
  76                  (format-time-string "%Y-%m-%d" emacs-build-time)
  77                  emacs-build-system)))
  78     (if here
  79         (insert version-string)
  80       (if (interactive-p)
  81           (message "%s" version-string)
  82         version-string))))
  83
  84 ;; We hope that this alias is easier for people to find.
  85 (defalias 'version 'emacs-version)
  86
  87 ;; We put version info into the executable in the form that `ident' uses.
  88 (or (memq system-type '(vax-vms windows-nt))
  89     (purecopy (concat "\n$Id: " (subst-char-in-string ?\n ?\s (emacs-version))
  90                       " $\n")))
  91
  92 ;;Local variables:
  93 ;;version-control: never
  94 ;;End:
  95
  96 ;; arch-tag: e60dc445-6218-4a4c-a7df-f15a818642a0
  97 ;;; version.el ends here