-;;; version.el --- record version number of Emacs -*- no-byte-compile: t -*-
+;;; version.el --- record version number of Emacs
-;; Copyright (C) 1985, 1992, 1994-1995, 1999-2011
-;; Free Software Foundation, Inc.
+;; Copyright (C) 1985, 1992, 1994-1995, 1999-2015 Free Software
+;; Foundation, Inc.
-;; Maintainer: FSF
+;; Maintainer: emacs-devel@gnu.org
;; Keywords: internal
;; Package: emacs
;;; Commentary:
-;; This file is loaded uncompiled when dumping Emacs.
-;; Doc-strings should adhere to the conventions of make-docfile.
-
;;; Code:
-(defconst emacs-major-version (progn (string-match "^[0-9]+" emacs-version) (string-to-number (match-string 0 emacs-version))) "\
-Major version number of this version of Emacs.
+(defconst emacs-major-version
+ (progn (string-match "^[0-9]+" emacs-version)
+ (string-to-number (match-string 0 emacs-version)))
+ "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) (string-to-number (match-string 1 emacs-version))) "\
-Minor version number of this version of Emacs.
+(defconst emacs-minor-version
+ (progn (string-match "^[0-9]+\\.\\([0-9]+\\)" emacs-version)
+ (string-to-number (match-string 1 emacs-version)))
+ "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-time (current-time)
+ "Time at which Emacs was dumped out.")
+
+(defconst emacs-build-system (system-name)
+ "Name of the system on which Emacs was built.")
-(defconst emacs-build-system (system-name))
+(defvar motif-version-string)
+(defvar gtk-version-string)
+(defvar ns-version-string)
-(defun emacs-version (&optional here) "\
-Return string describing the version of Emacs that is running.
+(defun emacs-version (&optional here)
+ "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."
;; We hope that this alias is easier for people to find.
(defalias 'version 'emacs-version)
-;; We put version info into the executable in the form that `ident' uses.
-(or (eq system-type 'windows-nt)
- (purecopy (concat "\n$Id: " (subst-char-in-string ?\n ?\s (emacs-version))
- " $\n")))
+;; Set during dumping, this is a defvar so that it can be setq'd.
+(defvar emacs-repository-version nil
+ "String giving the repository revision from which this Emacs was built.
+Value is nil if Emacs was not built from a repository checkout,
+or if we could not determine the revision.")
+
+(define-obsolete-variable-alias 'emacs-bzr-version
+ 'emacs-repository-version "24.4")
+
+(define-obsolete-function-alias 'emacs-bzr-get-version
+ 'emacs-repository-get-version "24.4")
+
+(defun emacs-repository-get-version (&optional dir external)
+ "Try to return as a string the repository revision of the Emacs sources.
+The format of the returned string is dependent on the VCS in use.
+Value is nil if the sources do not seem to be under version
+control, or if we could not determine the revision. Note that
+this reports on the current state of the sources, which may not
+correspond to the running Emacs.
+
+Optional argument DIR is a directory to use instead of
+`source-directory'. Optional argument EXTERNAL is ignored and is
+retained for compatibility."
+ (or dir (setq dir source-directory))
+ (cond ((file-directory-p (expand-file-name ".git" dir))
+ (message "Waiting for git...")
+ (with-temp-buffer
+ (let ((default-directory (file-name-as-directory dir)))
+ (and (eq 0
+ (condition-case nil
+ (call-process "git" nil '(t nil) nil "rev-parse"
+ "HEAD")
+ (error nil)))
+ (not (zerop (buffer-size)))
+ (replace-regexp-in-string "\n" "" (buffer-string))))))))
-;;Local variables:
-;;version-control: never
-;;End:
+;; We put version info into the executable in the form that `ident' uses.
+(purecopy (concat "\n$Id: " (subst-char-in-string ?\n ?\s (emacs-version))
+ " $\n"))
;;; version.el ends here