-;;;
;;; emu.el --- Emulation module for each Emacs variants
+
+;; Copyright (C) 1995,1996 Free Software Foundation, Inc.
+
+;; Author: MORIOKA Tomohiko <morioka@jaist.ac.jp>
+;; Version: $Id: emu.el,v 7.26 1996/09/05 16:31:02 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; see the file COPYING. If not, write to
+;; the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+;; Boston, MA 02111-1307, USA.
+
+;;; Code:
+
+(or (boundp 'emacs-major-version)
+ (defconst emacs-major-version (string-to-int emacs-version)))
+(or (boundp 'emacs-minor-version)
+ (defconst emacs-minor-version
+ (string-to-int
+ (substring
+ emacs-version
+ (string-match (format "%d\\." emacs-major-version) emacs-version)
+ ))))
+
+(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)
+ ))
+
+
+;;; @ MIME charset
;;;
-;;; Copyright (C) 1995 Free Software Foundation, Inc.
-;;; Copyright (C) 1995 MORIOKA Tomohiko
+
+(defun charsets-to-mime-charset (charsets)
+ "Return MIME charset from list of charset CHARSETS.
+This function refers variable `charsets-mime-charset-alist'
+and `default-mime-charset'. [emu.el]"
+ (if charsets
+ (or (catch 'tag
+ (let ((rest charsets-mime-charset-alist)
+ cell csl)
+ (while (setq cell (car rest))
+ (if (catch 'not-subset
+ (let ((set1 charsets)
+ (set2 (car cell))
+ obj)
+ (while set1
+ (setq obj (car set1))
+ (or (memq obj set2)
+ (throw 'not-subset nil)
+ )
+ (setq set1 (cdr set1))
+ )
+ t))
+ (throw 'tag (cdr cell))
+ )
+ (setq rest (cdr rest))
+ )))
+ default-mime-charset)))
+
+
+;;; @ EMACS 19.29 emulation
+;;;
+
+(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.
+\[emu.el; EMACS 19.29 emulating function]"
+ (let ((string (buffer-substring beg end)))
+ (tl:set-text-properties 0 (length string) nil string)
+ string))
+ )
+
+(or running-emacs-19_29-or-later
+ running-xemacs
+ ;; for Emacs 19.28 or earlier
+ (fboundp 'si:read-string)
+ (progn
+ (fset 'si:read-string (symbol-function 'read-string))
+
+ (defun read-string (prompt &optional initial-input history)
+ "Read a string from the minibuffer, prompting with string PROMPT.
+If non-nil, second arg INITIAL-INPUT is a string to insert before reading.
+The third arg HISTORY, is dummy for compatibility. [emu.el]
+See `read-from-minibuffer' for details of HISTORY argument."
+ (si: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)))))
+ )
+
+
+;;; @ EMACS 19.31 emulation
;;;
-;;; Author: MORIOKA Tomohiko <morioka@jaist.ac.jp>
-;;; Version:
-;;; $Id: emu.el,v 4.0 1995/09/21 00:05:57 morioka Exp $
-;;; Keywords: emulation, compatibility, NEmacs, Mule, XEmacs
+
+(or (fboundp 'buffer-live-p)
+ (defun buffer-live-p (object)
+ "Return non-nil if OBJECT is a buffer which has not been killed.
+Value is nil if OBJECT is not a buffer or if it has been killed.
+\[emu.el; EMACS 19.31 emulating function]"
+ (and object
+ (get-buffer object)
+ (buffer-name (get-buffer object))
+ ))
+ )
+
+(or (fboundp 'save-selected-window)
+ ;; This function was imported Emacs 19.33.
+ (defmacro save-selected-window (&rest body)
+ "Execute BODY, then select the window that was selected before BODY.
+\[emu.el; EMACS 19.31 emulating function]"
+ (list 'let
+ '((save-selected-window-window (selected-window)))
+ (list 'unwind-protect
+ (cons 'progn body)
+ (list 'select-window 'save-selected-window-window))))
+ )
+
+
+;;; @ XEmacs emulation
;;;
-;;; This file is part of tl and tm (Tools for MIME).
+
+(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
;;;
-(cond ((boundp 'MULE) (require 'emu-mule))
- ((boundp 'NEMACS)(require 'emu-nemacs))
- (t (require 'emu-orig))
- )
+(or (fboundp 'char-int)
+ (fset 'char-int (symbol-function 'identity))
+ )
+(or (fboundp 'int-char)
+ (fset 'int-char (symbol-function 'identity))
+ )
-;;; @ Emacs 19.29 emulation
+;;; @ for text/richtext and text/enriched
;;;
-(if (not (fboundp 'buffer-substring-no-properties))
- (defalias 'buffer-substring-no-properties 'buffer-substring)
- )
+(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