1 ;;; emu.el --- Emulation module for each Emacs variants
3 ;; Copyright (C) 1995,1996,1997,1998 Free Software Foundation, Inc.
5 ;; Author: MORIOKA Tomohiko <morioka@jaist.ac.jp>
6 ;; Keywords: emulation, compatibility, NEmacs, MULE, Emacs/mule, XEmacs
8 ;; This file is part of emu.
10 ;; This program is free software; you can redistribute it and/or
11 ;; modify it under the terms of the GNU General Public License as
12 ;; published by the Free Software Foundation; either version 2, or (at
13 ;; your option) any later version.
15 ;; This program is distributed in the hope that it will be useful, but
16 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 ;; General Public License for more details.
20 ;; You should have received a copy of the GNU General Public License
21 ;; along with GNU Emacs; see the file COPYING. If not, write to the
22 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
23 ;; Boston, MA 02111-1307, USA.
29 (defvar running-emacs-18 (<= emacs-major-version 18))
30 (defvar running-xemacs (featurep 'xemacs))
32 (defvar running-mule-merged-emacs (and (not (boundp 'MULE))
33 (not running-xemacs) (featurep 'mule)))
34 (defvar running-xemacs-with-mule (and running-xemacs (featurep 'mule)))
36 (defvar running-emacs-19 (and (not running-xemacs) (= emacs-major-version 19)))
37 (defvar running-emacs-19_29-or-later
38 (or (and running-emacs-19 (>= emacs-minor-version 29))
39 (and (not running-xemacs)(>= emacs-major-version 20))))
41 (defvar running-xemacs-19 (and running-xemacs
42 (= emacs-major-version 19)))
43 (defvar running-xemacs-20-or-later (and running-xemacs
44 (>= emacs-major-version 20)))
45 (defvar running-xemacs-19_14-or-later
46 (or (and running-xemacs-19 (>= emacs-minor-version 14))
47 running-xemacs-20-or-later))
51 (defvar mouse-button-1 'button1)
52 (defvar mouse-button-2 'button2)
53 (defvar mouse-button-3 'button3)
55 ((>= emacs-major-version 19)
57 (defalias 'tl:make-overlay 'make-overlay)
58 (defalias 'tl:overlay-put 'overlay-put)
59 (defalias 'tl:overlay-buffer 'overlay-buffer)
61 (make-obsolete 'tl:make-overlay 'make-overlay)
62 (make-obsolete 'tl:overlay-put 'overlay-put)
63 (make-obsolete 'tl:overlay-buffer 'overlay-buffer)
66 (defvar mouse-button-1 [mouse-1])
67 (defvar mouse-button-2 [mouse-2])
68 (defvar mouse-button-3 [down-mouse-3])
72 (defvar mouse-button-1 nil)
73 (defvar mouse-button-2 nil)
74 (defvar mouse-button-3 nil)
80 (cond ((featurep 'mule)
81 (cond ((featurep 'xemacs)
82 ;; for XEmacs with MULE
85 ((>= emacs-major-version 20)
88 (defalias 'insert-binary-file-contents-literally
89 'insert-file-contents-literally)
92 ;; for MULE 1.* and 2.*
97 ;; for NEmacs and NEpoch
101 ;; for Emacs 19 and XEmacs without MULE
102 (require 'emu-latin1)
106 ;;; @ Mule emulating aliases
108 ;;; You should not use it.
110 (or (boundp '*noconv*)
111 (defconst *noconv* 'binary
112 "Coding-system for binary.
113 This constant is defined to emulate old MULE anything older than MULE 2.3.
114 It is obsolete, so don't use it."))
117 ;;; @ without code-conversion
120 (defalias 'insert-binary-file-contents 'insert-file-contents-as-binary)
121 (make-obsolete 'insert-binary-file-contents 'insert-file-contents-as-binary)
123 (defun-maybe insert-binary-file-contents-literally (filename
126 "Like `insert-file-contents-literally', q.v., but don't code conversion.
127 A buffer may be modified in several ways after reading into the buffer due
128 to advanced Emacs features, such as file-name-handlers, format decoding,
129 find-file-hooks, etc.
130 This function ensures that none of these modifications will take place.
132 (as-binary-input-file
133 ;; Returns list absolute file name and length of data inserted.
134 (insert-file-contents-literally filename visit beg end replace)))
137 ;;; @ for text/richtext and text/enriched
140 (cond ((fboundp 'richtext-decode)
143 ((or running-emacs-19_29-or-later running-xemacs-19_14-or-later)
145 (autoload 'richtext-decode "richtext")
146 (or (assq 'text/richtext format-alist)
150 '("Extended MIME text/richtext format."
151 "Content-[Tt]ype:[ \t]*text/richtext"
152 richtext-decode richtext-encode t enriched-mode))
156 ;; don't have enriched.el
157 (autoload 'richtext-decode "tinyrich")
158 (autoload 'enriched-decode "tinyrich")