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1 | ;;; gnus-ems.el --- functions for making Gnus work under different Emacsen |
2 | ;; Copyright (C) 1995,96,97 Free Software Foundation, Inc. | |
3 | ||
4 | ;; Author: Lars Magne Ingebrigtsen <larsi@ifi.uio.no> | |
5 | ;; Keywords: news | |
6 | ||
7 | ;; This file is part of GNU Emacs. | |
8 | ||
9 | ;; GNU Emacs is free software; you can redistribute it and/or modify | |
10 | ;; it under the terms of the GNU General Public License as published by | |
11 | ;; the Free Software Foundation; either version 2, or (at your option) | |
12 | ;; any later version. | |
13 | ||
14 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
15 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | ;; GNU General Public License for more details. | |
18 | ||
19 | ;; You should have received a copy of the GNU General Public License | |
20 | ;; along with GNU Emacs; see the file COPYING. If not, write to the | |
21 | ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
22 | ;; Boston, MA 02111-1307, USA. | |
23 | ||
24 | ;;; Commentary: | |
25 | ||
26 | ;;; Code: | |
27 | ||
28 | (eval-when-compile (require 'cl)) | |
29 | ||
30 | ;;; Function aliases later to be redefined for XEmacs usage. | |
31 | ||
32 | (defvar gnus-xemacs (string-match "XEmacs\\|Lucid" emacs-version) | |
33 | "Non-nil if running under XEmacs.") | |
34 | ||
35 | (defvar gnus-mouse-2 [mouse-2]) | |
36 | (defvar gnus-down-mouse-2 [down-mouse-2]) | |
a8151ef7 LMI |
37 | (defvar gnus-mode-line-modified |
38 | (if (or gnus-xemacs | |
39 | (< emacs-major-version 20)) | |
40 | '("--**-" . "-----") | |
41 | '("**" "--"))) | |
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42 | |
43 | (eval-and-compile | |
44 | (autoload 'gnus-xmas-define "gnus-xmas") | |
45 | (autoload 'gnus-xmas-redefine "gnus-xmas") | |
a8151ef7 | 46 | (autoload 'appt-select-lowest-window "appt")) |
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47 | |
48 | (or (fboundp 'mail-file-babyl-p) | |
49 | (fset 'mail-file-babyl-p 'rmail-file-p)) | |
50 | ||
51 | ;;; Mule functions. | |
52 | ||
53 | (defun gnus-mule-cite-add-face (number prefix face) | |
54 | ;; At line NUMBER, ignore PREFIX and add FACE to the rest of the line. | |
55 | (when face | |
56 | (let ((inhibit-point-motion-hooks t) | |
57 | from to) | |
58 | (goto-line number) | |
59 | (if (boundp 'MULE) | |
60 | (forward-char (chars-in-string prefix)) | |
61 | (forward-char (length prefix))) | |
62 | (skip-chars-forward " \t") | |
63 | (setq from (point)) | |
64 | (end-of-line 1) | |
65 | (skip-chars-backward " \t") | |
66 | (setq to (point)) | |
67 | (when (< from to) | |
68 | (gnus-overlay-put (gnus-make-overlay from to) 'face face))))) | |
69 | ||
70 | (defun gnus-mule-max-width-function (el max-width) | |
71 | (` (let* ((val (eval (, el))) | |
72 | (valstr (if (numberp val) | |
73 | (int-to-string val) val))) | |
74 | (if (> (length valstr) (, max-width)) | |
75 | (truncate-string valstr (, max-width)) | |
76 | valstr)))) | |
77 | ||
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78 | (defun gnus-encode-coding-string (string system) |
79 | string) | |
80 | ||
eec82323 LMI |
81 | (eval-and-compile |
82 | (if (string-match "XEmacs\\|Lucid" emacs-version) | |
83 | nil | |
84 | ||
85 | (defvar gnus-mouse-face-prop 'mouse-face | |
a8151ef7 | 86 | "Property used for highlighting mouse regions.")) |
eec82323 LMI |
87 | |
88 | (cond | |
89 | ((string-match "XEmacs\\|Lucid" emacs-version) | |
90 | (gnus-xmas-define)) | |
91 | ||
92 | ((or (not (boundp 'emacs-minor-version)) | |
93 | (< emacs-minor-version 30)) | |
94 | ;; Remove the `intangible' prop. | |
95 | (let ((props (and (boundp 'gnus-hidden-properties) | |
96 | gnus-hidden-properties))) | |
97 | (while (and props (not (eq (car (cdr props)) 'intangible))) | |
98 | (setq props (cdr props))) | |
99 | (when props | |
100 | (setcdr props (cdr (cdr (cdr props)))))) | |
101 | (unless (fboundp 'buffer-substring-no-properties) | |
102 | (defun buffer-substring-no-properties (beg end) | |
103 | (format "%s" (buffer-substring beg end))))) | |
104 | ||
105 | ((boundp 'MULE) | |
106 | (provide 'gnusutil)))) | |
107 | ||
108 | (eval-and-compile | |
109 | (cond | |
110 | ((not window-system) | |
111 | (defun gnus-dummy-func (&rest args)) | |
112 | (let ((funcs '(mouse-set-point set-face-foreground | |
113 | set-face-background x-popup-menu))) | |
114 | (while funcs | |
115 | (unless (fboundp (car funcs)) | |
116 | (fset (car funcs) 'gnus-dummy-func)) | |
117 | (setq funcs (cdr funcs)))))) | |
118 | (unless (fboundp 'file-regular-p) | |
119 | (defun file-regular-p (file) | |
120 | (and (not (file-directory-p file)) | |
121 | (not (file-symlink-p file)) | |
122 | (file-exists-p file)))) | |
123 | (unless (fboundp 'face-list) | |
124 | (defun face-list (&rest args)))) | |
125 | ||
126 | (eval-and-compile | |
127 | (let ((case-fold-search t)) | |
128 | (cond | |
129 | ((string-match "windows-nt\\|os/2\\|emx" (format "%s" system-type)) | |
130 | (setq nnheader-file-name-translation-alist | |
131 | (append nnheader-file-name-translation-alist | |
132 | '((?: . ?_) | |
133 | (?+ . ?-)))))))) | |
134 | ||
135 | (defvar gnus-tmp-unread) | |
136 | (defvar gnus-tmp-replied) | |
137 | (defvar gnus-tmp-score-char) | |
138 | (defvar gnus-tmp-indentation) | |
139 | (defvar gnus-tmp-opening-bracket) | |
140 | (defvar gnus-tmp-lines) | |
141 | (defvar gnus-tmp-name) | |
142 | (defvar gnus-tmp-closing-bracket) | |
143 | (defvar gnus-tmp-subject-or-nil) | |
144 | ||
145 | (defun gnus-ems-redefine () | |
146 | (cond | |
147 | ((string-match "XEmacs\\|Lucid" emacs-version) | |
148 | (gnus-xmas-redefine)) | |
149 | ||
150 | ((featurep 'mule) | |
151 | ;; Mule and new Emacs definitions | |
152 | ||
153 | ;; [Note] Now there are three kinds of mule implementations, | |
154 | ;; original MULE, XEmacs/mule and beta version of Emacs including | |
155 | ;; some mule features. Unfortunately these API are different. In | |
156 | ;; particular, Emacs (including original MULE) and XEmacs are | |
157 | ;; quite different. | |
158 | ;; Predicates to check are following: | |
159 | ;; (boundp 'MULE) is t only if MULE (original; anything older than | |
160 | ;; Mule 2.3) is running. | |
161 | ;; (featurep 'mule) is t when every mule variants are running. | |
162 | ||
163 | ;; These implementations may be able to share between original | |
164 | ;; MULE and beta version of new Emacs. In addition, it is able to | |
165 | ;; detect XEmacs/mule by (featurep 'mule) and to check variable | |
166 | ;; `emacs-version'. In this case, implementation for XEmacs/mule | |
167 | ;; may be able to share between XEmacs and XEmacs/mule. | |
168 | ||
169 | (defalias 'gnus-truncate-string 'truncate-string) | |
170 | ||
171 | (defvar gnus-summary-display-table nil | |
172 | "Display table used in summary mode buffers.") | |
173 | (fset 'gnus-cite-add-face 'gnus-mule-cite-add-face) | |
174 | (fset 'gnus-max-width-function 'gnus-mule-max-width-function) | |
175 | (fset 'gnus-summary-set-display-table 'ignore) | |
a8151ef7 | 176 | (fset 'gnus-encode-coding-string 'encode-coding-string) |
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177 | |
178 | (when (boundp 'gnus-check-before-posting) | |
179 | (setq gnus-check-before-posting | |
180 | (delq 'long-lines | |
181 | (delq 'control-chars gnus-check-before-posting)))) | |
182 | ||
183 | (defun gnus-summary-line-format-spec () | |
184 | (insert gnus-tmp-unread gnus-tmp-replied | |
185 | gnus-tmp-score-char gnus-tmp-indentation) | |
186 | (put-text-property | |
187 | (point) | |
188 | (progn | |
189 | (insert | |
190 | gnus-tmp-opening-bracket | |
191 | (format "%4d: %-20s" | |
192 | gnus-tmp-lines | |
193 | (if (> (length gnus-tmp-name) 20) | |
194 | (truncate-string gnus-tmp-name 20) | |
195 | gnus-tmp-name)) | |
196 | gnus-tmp-closing-bracket) | |
197 | (point)) | |
198 | gnus-mouse-face-prop gnus-mouse-face) | |
199 | (insert " " gnus-tmp-subject-or-nil "\n")) | |
3c22558d | 200 | |
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201 | (when (and (boundp 'enable-multibyte-characters) |
202 | enable-multibyte-characters) | |
203 | (require 'gnus-mule) | |
204 | (gnus-mule-initialize)) | |
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205 | ))) |
206 | ||
207 | (defun gnus-region-active-p () | |
208 | "Say whether the region is active." | |
209 | (and (boundp 'transient-mark-mode) | |
210 | transient-mark-mode | |
211 | (boundp 'mark-active) | |
212 | mark-active)) | |
213 | ||
a8151ef7 LMI |
214 | (defun gnus-add-minor-mode (mode name map) |
215 | (if (fboundp 'add-minor-mode) | |
216 | (add-minor-mode mode name map) | |
217 | (unless (assq mode minor-mode-alist) | |
218 | (push `(,mode ,name) minor-mode-alist)) | |
219 | (unless (assq mode minor-mode-map-alist) | |
220 | (push (cons mode map) | |
221 | minor-mode-map-alist)))) | |
222 | ||
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223 | (provide 'gnus-ems) |
224 | ||
225 | ;; Local Variables: | |
226 | ;; byte-compile-warnings: '(redefine callargs) | |
227 | ;; End: | |
228 | ||
229 | ;;; gnus-ems.el ends here |