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1 ;; Record version number of Emacs.
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2 ;; Copyright (C) 1985, 1991-1994 Free Software Foundation, Inc.
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3
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4 ;; This file is part of XEmacs.
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5
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6 ;; XEmacs is free software; you can redistribute it and/or modify
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7 ;; it under the terms of the GNU General Public License as published by
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8 ;; the Free Software Foundation; either version 2, or (at your option)
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9 ;; any later version.
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10
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11 ;; XEmacs is distributed in the hope that it will be useful,
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12 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 ;; GNU General Public License for more details.
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15
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16 ;; You should have received a copy of the GNU General Public License
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17 ;; along with GNU Emacs; see the file COPYING. If not, write to the
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18 ;; Free Software Foundation Inc., 59 Temple Place - Suite 330,
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19 ;; Boston, MA 02111-1307, USA.
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20
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21 ;;; Synched up with: FSF 19.34.
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22
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23 ;;; Code:
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24
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25 (defconst emacs-version "20.0"
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26 "Version numbers of this version of Emacs.")
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27
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28 (setq emacs-version (purecopy (concat emacs-version " XEmacs Lucid (beta31)")))
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29
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30 (defconst emacs-major-version
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31 (progn (or (string-match "^[0-9]+" emacs-version)
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32 (error "emacs-version unparsable"))
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33 (string-to-int (match-string 0 emacs-version)))
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34 "Major version number of this version of Emacs, as an integer.
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35 Warning, this variable did not exist in Emacs versions earlier than:
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36 FSF Emacs: 19.23
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37 XEmacs: 19.10")
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38
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39 (defconst emacs-minor-version
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40 (progn (or (string-match "^[0-9]+\\.\\([0-9]+\\)" emacs-version)
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41 (error "emacs-version unparsable"))
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42 (string-to-int (match-string 1 emacs-version)))
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43 "Minor version number of this version of Emacs, as an integer.
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44 Warning, this variable did not exist in Emacs versions earlier than:
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45 FSF Emacs: 19.23
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46 XEmacs: 19.10")
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47
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48 (defconst emacs-build-time (current-time-string)
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49 "Time at which Emacs was dumped out.")
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50
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51 (defconst emacs-build-system (system-name))
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52
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53 (defun emacs-version (&optional arg)
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54 "Return string describing the version of Emacs that is running.
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55 When called interactively with a prefix argument, insert string at point.
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56 Don't use this function in programs to choose actions according
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57 to the system configuration; look at `system-configuration' instead."
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58 (interactive "p")
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59 (let ((version-string
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60 (format
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61 "XEmacs %s [Lucid] (%s%s) of %s %s on %s"
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62 (substring emacs-version 0 (string-match " XEmacs" emacs-version))
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63 system-configuration
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64 (cond ((featurep 'mule) ", Mule") (t ""))
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65 (substring emacs-build-time 0
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66 (string-match " *[0-9]*:" emacs-build-time))
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67 (substring emacs-build-time
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68 (string-match "[0-9]*$" emacs-build-time))
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69 emacs-build-system)))
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70 (cond
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71 ((null arg) version-string)
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72 ((eq arg 1) (message "%s" version-string))
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73 (t (insert version-string)))))
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74
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75 ;; from emacs-vers.el
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76 (defun emacs-version>= (major &optional minor)
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77 "Return true if the Emacs version is >= to the given MAJOR and MINOR numbers.
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78 The MAJOR version number argument is required, but the MINOR version number
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79 argument is optional. If the minor version number is not specified (or is the
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80 symbol `nil') then only the major version numbers are considered in the test."
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81 (if (null minor)
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82 (>= emacs-major-version major)
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83 (or (> emacs-major-version major)
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84 (and (= emacs-major-version major)
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85 (>= emacs-minor-version minor)))))
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86
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87 ;;; We hope that this alias is easier for people to find.
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88 (define-function 'version 'emacs-version)
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89
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90 ;; Put the emacs version number into the `pure[]' array in a form that
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91 ;; `what(1)' can extract from the executable or a core file. We don't
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92 ;; actually need this to be pointed to from lisp; pure objects can't
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93 ;; be GCed.
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94 (or (memq system-type '(vax-vms windows-nt ms-dos))
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95 (purecopy (concat "\n@" "(#)" (emacs-version)
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96 "\n@" "(#)" "Configuration: "
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97 system-configuration "\n")))
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98
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99 ;;Local variables:
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100 ;;version-control: never
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101 ;;End:
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102
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103 ;;; version.el ends here
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