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;;; version.el --- record version number of Emacs -*- no-byte-compile: t -*-
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;; Copyright (C) 1985, 1992, 1994, 1995, 1999, 2000, 2001, 2002,
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;;   2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
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;; Maintainer: FSF
;; Keywords: internal

;; This file is part of GNU Emacs.

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;; GNU Emacs is free software: you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
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;; GNU Emacs 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
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;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
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;;; Commentary:

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;;; Code:

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(defconst emacs-copyright "Copyright (C) 2008 Free Software Foundation, Inc."
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  "Short copyright string for this version of Emacs.")

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(defconst emacs-version "23.0.60" "\
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Version numbers of this version of Emacs.")

(defconst emacs-major-version
  (progn (string-match "^[0-9]+" emacs-version)
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	 (string-to-number (match-string 0 emacs-version)))
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  "Major version number of this version of Emacs.
This variable first existed in version 19.23.")

(defconst emacs-minor-version
  (progn (string-match "^[0-9]+\\.\\([0-9]+\\)" emacs-version)
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	 (string-to-number (match-string 1 emacs-version)))
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  "Minor version number of this version of Emacs.
This variable first existed in version 19.23.")

(defconst emacs-build-time (current-time) "\
Time at which Emacs was dumped out.")

(defconst emacs-build-system (system-name))

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(defun emacs-version (&optional here) "\
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Return string describing the version of Emacs that is running.
If optional argument HERE is non-nil, insert string at point.
Don't use this function in programs to choose actions according
to the system configuration; look at `system-configuration' instead."
  (interactive "P")
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  (let ((version-string
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         (format (if (not (interactive-p))
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		     "GNU Emacs %s (%s%s%s)\n of %s on %s"
		   "GNU Emacs %s (%s%s%s) of %s on %s")
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                 emacs-version
		 system-configuration
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		 (cond ((featurep 'motif)
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			(concat ", " (substring motif-version-string 4)))
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		       ((featurep 'gtk)
			(concat ", GTK+ Version " gtk-version-string))
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		       ((featurep 'x-toolkit) ", X toolkit")
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		       ((featurep 'ns-windowing)
			(format ", *Step %s" ns-version-string))
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		       ((boundp 'mac-carbon-version-string)
			(concat ", Carbon Version " mac-carbon-version-string))
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		       (t ""))
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		 (if (and (boundp 'x-toolkit-scroll-bars)
			  (memq x-toolkit-scroll-bars '(xaw xaw3d)))
		     (format ", %s scroll bars"
			     (capitalize (symbol-name x-toolkit-scroll-bars)))
		   "")
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		 (format-time-string "%Y-%m-%d" emacs-build-time)
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                 emacs-build-system)))
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    (if here
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        (insert version-string)
      (if (interactive-p)
          (message "%s" version-string)
        version-string))))

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;; We hope that this alias is easier for people to find.
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(defalias 'version 'emacs-version)

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;; We put version info into the executable in the form that `ident' uses.
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(or (memq system-type '(vax-vms windows-nt))
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    (purecopy (concat "\n$Id: " (subst-char-in-string ?\n ?\s (emacs-version))
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		      " $\n")))

;;Local variables:
;;version-control: never
;;End:

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;; arch-tag: e60dc445-6218-4a4c-a7df-f15a818642a0
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;;; version.el ends here