;;;
-;;; emu: Emulation module for each Emacs variants
+;;; emu.el --- Emulation module for each Emacs variants
;;;
-;;; $Id: emu.el,v 2.0 1995/09/08 17:47:33 morioka Exp $
+;;; Copyright (C) 1995 Free Software Foundation, Inc.
+;;; Copyright (C) 1995,1996 MORIOKA Tomohiko
;;;
+;;; Author: MORIOKA Tomohiko <morioka@jaist.ac.jp>
+;;; modified by KOBAYASHI Shuhei <shuhei-k@jaist.ac.jp>
+;;; Version:
+;;; $Id: emu.el,v 7.17 1996/07/03 06:27:10 morioka Exp $
+;;; Keywords: emulation, compatibility, NEmacs, Mule, XEmacs
+;;;
+;;; This file is part of tl (Tiny Library).
+;;;
+;;; This program is free software; you can redistribute it and/or
+;;; modify it under the terms of the GNU General Public License as
+;;; published by the Free Software Foundation; either version 2, or
+;;; (at your option) any later version.
+;;;
+;;; This program 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
+;;; along with This program. If not, write to the Free Software
+;;; Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
+;;;
+;;; Code:
-(cond ((boundp 'MULE) (require 'emu-mule))
- ((boundp 'NEMACS)(require 'emu-nemacs))
- (t (require 'emu-orig))
- )
+(or (boundp 'emacs-major-version)
+ (defconst emacs-major-version (string-to-int emacs-version)))
-(if (string-match "XEmacs\\|Lucid" emacs-version)
- (require 'emu-xemacs)
- )
+(defvar running-emacs-18 (<= emacs-major-version 18))
+(defvar running-xemacs (string-match "XEmacs" emacs-version))
+(defvar running-xemacs-19 (and running-xemacs
+ (= emacs-major-version 19)))
+(defvar running-xemacs-20 (and running-xemacs
+ (= emacs-major-version 20)))
+(defvar running-xemacs-20-or-later (and running-xemacs
+ (>= emacs-major-version 20)))
+(defvar running-xemacs-19_14-or-later
+ (or (and running-xemacs-19 (>= emacs-minor-version 14))
+ running-xemacs-20-or-later))
+(defvar running-emacs-19 (and (not running-xemacs)
+ (= emacs-major-version 19)))
+(defvar running-emacs-19_29-or-later
+ (or (and running-emacs-19 (>= emacs-minor-version 29))
+ (and (not running-xemacs)(>= emacs-major-version 20))))
+
+(cond ((boundp 'MULE)
+ (require 'emu-mule)
+ )
+ ((and running-xemacs-20 (featurep 'mule))
+ (require 'emu-x20)
+ )
+ ((boundp 'NEMACS)
+ (require 'emu-nemacs)
+ )
+ (t
+ (require 'emu-e19)
+ ))
;;; @ Emacs 19.29 emulation
;;;
-(if (not (fboundp 'buffer-substring-no-properties))
- (defalias 'buffer-substring-no-properties 'buffer-substring)
- )
+(or (fboundp 'buffer-substring-no-properties)
+ (defun buffer-substring-no-properties (beg end)
+ "Return the text from BEG to END, without text properties, as a string."
+ (let ((string (buffer-substring beg end)))
+ (tl:set-text-properties 0 (length string) nil string)
+ string))
+ )
+
+(cond ((or running-emacs-19_29-or-later running-xemacs)
+ ;; for Emacs 19.29 or later and XEmacs
+ (defalias 'tl:read-string 'read-string)
+ )
+ (t
+ ;; for Emacs 19.28 or earlier
+ (defun tl:read-string (prompt &optional initial-input history)
+ (read-string prompt initial-input)
+ )
+ ))
+
+(or (fboundp 'add-to-list)
+ ;; This function was imported Emacs 19.30.
+ (defun add-to-list (list-var element)
+ "Add to the value of LIST-VAR the element ELEMENT if it isn't there yet.
+If you want to use `add-to-list' on a variable that is not defined
+until a certain package is loaded, you should put the call to `add-to-list'
+into a hook function that will be run only after loading the package.
+\[emu.el; Emacs 19.30 emulating function]"
+ (or (member element (symbol-value list-var))
+ (set list-var (cons element (symbol-value list-var)))))
+ )
+
+
+;;; @ XEmacs emulation
+;;;
+
+(or (fboundp 'functionp)
+ (defun functionp (obj)
+ "Returns t if OBJ is a function, nil otherwise.
+\[emu.el; XEmacs emulating function]"
+ (or (subrp obj)
+ (byte-code-function-p obj)
+ (and (symbolp obj)(fboundp obj))
+ (and (consp obj)(eq (car obj) 'lambda))
+ ))
+ )
+
+
+;;; @ for XEmacs 20
+;;;
+
+(or (fboundp 'char-int)
+ (fset 'char-int (symbol-function 'identity))
+ )
+(or (fboundp 'int-char)
+ (fset 'int-char (symbol-function 'identity))
+ )
+
+
+;;; @ for text/richtext and text/enriched
+;;;
+
+(cond ((or running-emacs-19_29-or-later running-xemacs-19_14-or-later)
+ ;; have enriched.el
+ (autoload 'richtext-decode "richtext")
+ (or (assq 'text/richtext format-alist)
+ (setq format-alist
+ (cons
+ (cons 'text/richtext
+ '("Extended MIME text/richtext format."
+ "Content-[Tt]ype:[ \t]*text/richtext"
+ richtext-decode richtext-encode t enriched-mode))
+ format-alist)))
+ )
+ (t
+ ;; don't have enriched.el
+ (autoload 'richtext-decode "tinyrich")
+ (autoload 'enriched-decode "tinyrich")
+ ))
;;; @ end
;;;
(provide 'emu)
+
+;;; emu.el ends here
projects / elisp / apel.git / blobdiff