1 ;;; gnus-ems.el --- functions for making Gnus work under different Emacsen
2 ;; Copyright (C) 1995 Free Software Foundation, Inc.
4 ;; Author: Lars Magne Ingebrigtsen <larsi@ifi.uio.no>
7 ;; This file is part of GNU Emacs.
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)
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.
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
21 ;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
27 (defvar gnus-mouse-2 [mouse-2])
28 (defvar gnus-easymenu 'easymenu)
29 (defvar gnus-group-mode-hook ())
30 (defvar gnus-summary-mode-hook ())
31 (defvar gnus-article-mode-hook ())
33 ;; We do not byte-compile this file, because error messages are such a
38 ((string-match "XEmacs\\|Lucid" emacs-version)
39 ;; XEmacs definitions.
41 (setq gnus-mouse-2 [button2])
42 (setq gnus-easymenu 'auc-menu)
44 (or (memq 'underline (list-faces))
45 (funcall (intern "make-face") 'underline))
46 ;; Must avoid calling set-face-underline-p directly, because it
47 ;; is a defsubst in emacs19, and will make the .elc files non
49 (or (face-differs-from-default-p 'underline)
50 (funcall 'set-face-underline-p 'underline t))
51 (or (fboundp 'set-text-properties)
52 (defun set-text-properties (start end props &optional buffer)
54 (put-text-property start end (car props) (cdr props) buffer)
55 (remove-text-properties start end ()))))
57 (or (fboundp 'make-overlay) (fset 'make-overlay 'make-extent))
58 (or (fboundp 'overlay-put) (fset 'overlay-put 'set-extent-property))
59 (or (fboundp 'move-overlay)
60 (defun move-overlay (extent start end &optional buffer)
61 (set-extent-endpoints extent start end)))
62 (or (boundp 'standard-display-table) (setq standard-display-table nil))
63 (or (boundp 'read-event) (fset 'read-event 'next-command-event))
67 (setq gnus-group-mode-hook
70 (easy-menu-add gnus-group-reading-menu)
71 (easy-menu-add gnus-group-group-menu)
72 (easy-menu-add gnus-group-post-menu)
73 (easy-menu-add gnus-group-misc-menu)
74 (gnus-install-mouse-tracker))
75 gnus-group-mode-hook))
76 (setq gnus-summary-mode-hook
79 (easy-menu-add gnus-summary-mark-menu)
80 (easy-menu-add gnus-summary-move-menu)
81 (easy-menu-add gnus-summary-article-menu)
82 (easy-menu-add gnus-summary-thread-menu)
83 (easy-menu-add gnus-summary-misc-menu)
84 (easy-menu-add gnus-summary-post-menu)
85 (easy-menu-add gnus-summary-kill-menu)
86 (gnus-install-mouse-tracker))
87 gnus-summary-mode-hook))
88 (setq gnus-article-mode-hook
91 (easy-menu-add gnus-article-article-menu)
92 (easy-menu-add gnus-article-treatment-menu))
93 gnus-article-mode-hook)))
95 (defun gnus-install-mouse-tracker ()
96 (require 'mode-motion)
97 (setq mode-motion-hook 'mode-motion-highlight-line)))
99 ((and (not (string-match "28.9" emacs-version))
100 (not (string-match "29" emacs-version)))
101 (setq gnus-hidden-properties '(invisible t))
102 (or (fboundp 'buffer-substring-no-properties)
103 (defun buffer-substring-no-properties (beg end)
104 (format "%s" (buffer-substring beg end)))))
114 (defun gnus-dummy-func (&rest args))
115 (let ((funcs '(mouse-set-point set-face-foreground
116 set-face-background x-popup-menu)))
118 (or (fboundp (car funcs))
119 (fset (car funcs) 'gnus-dummy-func))
120 (setq funcs (cdr funcs))))))
121 (or (fboundp 'file-regular-p)
122 (defun file-regular-p (file)
123 (and (not (file-directory-p file))
124 (not (file-symlink-p file))
125 (file-exists-p file))))
126 (or (fboundp 'face-list)
127 (defun face-list (&rest args)))
130 (defun gnus-ems-redefine ()
132 ((string-match "XEmacs\\|Lucid" emacs-version)
133 ;; XEmacs definitions.
134 (fset 'gnus-set-mouse-face (lambda (string) string))
136 (fset 'gnus-summary-make-display-table (lambda () nil))
141 (defun gnus-highlight-selected-summary ()
142 ;; Added by Per Abrahamsen <amanda@iesd.auc.dk>.
143 ;; Highlight selected article in summary buffer
144 (if gnus-summary-selected-face
146 (let* ((beg (progn (beginning-of-line) (point)))
147 (end (progn (end-of-line) (point)))
148 (to (max 1 (1- (or (previous-single-property-change
149 end 'mouse-face nil beg) end))))
150 (from (1+ (or (next-single-property-change
151 beg 'mouse-face nil end) beg))))
156 (if gnus-newsgroup-selected-overlay
157 (delete-extent gnus-newsgroup-selected-overlay))
158 (setq gnus-newsgroup-selected-overlay
159 (make-extent from to))
160 (set-extent-face gnus-newsgroup-selected-overlay
161 gnus-summary-selected-face)))))
164 (defun gnus-summary-recenter ()
165 (let* ((top (cond ((< (window-height) 4) 0)
166 ((< (window-height) 7) 1)
168 (height (- (window-height) 2))
169 (bottom (save-excursion (goto-char (point-max))
170 (forward-line (- height))
172 (window (get-buffer-window (current-buffer))))
174 ;; The user has to want it,
175 gnus-auto-center-summary
176 ;; the article buffer must be displayed,
177 (get-buffer-window gnus-article-buffer)
178 ;; Set the window start to either `bottom', which is the biggest
179 ;; possible valid number, or the second line from the top,
180 ;; whichever is the least.
182 window (min bottom (save-excursion (forward-line (- top))
185 (defun gnus-group-insert-group-line-info (group)
186 (let ((entry (gnus-gethash group gnus-newsrc-hashtb))
191 (setq info (nth 2 entry))
192 (gnus-group-insert-group-line
193 nil group (nth 1 info) (nth 3 info) (car entry) (nth 4 info)))
194 (setq active (gnus-gethash group gnus-active-hashtb))
196 (gnus-group-insert-group-line
197 nil group (if (member group gnus-zombie-list) gnus-level-zombie
199 nil (if active (- (1+ (cdr active)) (car active)) 0) nil))
202 (remove-text-properties
203 (1+ (gnus-point-at-bol)) (1+ (gnus-point-at-eol))
204 '(gnus-group nil)))))
206 (defun gnus-copy-article-buffer (&optional article-buffer)
207 (setq gnus-article-copy (get-buffer-create " *gnus article copy*"))
208 (buffer-disable-undo gnus-article-copy)
209 (or (memq gnus-article-copy gnus-buffer-list)
210 (setq gnus-buffer-list (cons gnus-article-copy gnus-buffer-list)))
211 (let ((article-buffer (or article-buffer gnus-article-buffer))
213 (if (and (get-buffer article-buffer)
214 (buffer-name (get-buffer article-buffer)))
216 (set-buffer article-buffer)
218 (setq buf (buffer-substring (point-min) (point-max)))
219 (set-buffer gnus-article-copy)
221 (insert (format "%s" buf))))))
223 (defun gnus-summary-refer-article (message-id)
224 "Refer article specified by MESSAGE-ID.
225 NOTE: This command only works with newsgroups that use real or simulated NNTP."
226 (interactive "sMessage-ID: ")
227 (if (or (not (stringp message-id))
228 (zerop (length message-id)))
230 ;; Construct the correct Message-ID if necessary.
231 ;; Suggested by tale@pawl.rpi.edu.
232 (or (string-match "^<" message-id)
233 (setq message-id (concat "<" message-id)))
234 (or (string-match ">$" message-id)
235 (setq message-id (concat message-id ">")))
236 (let ((header (car (gnus-gethash (downcase message-id)
237 gnus-newsgroup-dependencies))))
239 (or (gnus-summary-goto-article (header-number header))
240 ;; The header has been read, but the article had been
241 ;; expunged, so we insert it again.
243 (gnus-summary-insert-line
244 nil header 0 nil gnus-read-mark nil nil
245 (header-subject header))
248 (remove-text-properties
249 (1+ (gnus-point-at-bol)) (1+ (gnus-point-at-eol))
250 '(gnus-number nil gnus-mark nil gnus-level nil)))
252 (header-number header)))
253 (let ((gnus-override-method gnus-refer-article-method)
254 (gnus-ancient-mark gnus-read-mark)
255 (tmp-buf (get-buffer-create " *gnus refer"))
256 (tmp-point (window-start
257 (get-buffer-window gnus-article-buffer)))
259 (and gnus-refer-article-method
260 (or (gnus-server-opened gnus-refer-article-method)
261 (gnus-open-server gnus-refer-article-method)))
262 ;; Save the old article buffer.
265 (buffer-disable-undo (current-buffer))
266 (insert-buffer-substring gnus-article-buffer))
268 (if (gnus-article-prepare
269 message-id nil (gnus-read-header message-id))
271 (setq number (header-number gnus-current-headers))
272 (gnus-rebuild-thread message-id)
273 (gnus-summary-goto-subject number)
274 (gnus-summary-recenter)
275 (gnus-article-set-window-start
276 (cdr (assq number gnus-newsgroup-bookmarks)))
278 ;; We restore the old article buffer.
280 (set-buffer gnus-article-buffer)
281 (let ((buffer-read-only nil))
282 (insert-buffer-substring tmp-buf)
284 (set-window-start (get-buffer-window (current-buffer))
287 (kill-buffer tmp-buf)))))))
295 (if (not (fboundp 'truncate-string))
296 (defun truncate-string (str width)
297 (let ((w (string-width str))
298 (col 0) (idx 0) (p-idx 0) chr)
302 (setq chr (aref str idx)
303 col (+ col (char-width chr))
305 idx (+ idx (char-bytes chr))
307 (substring str 0 (if (= col width)
312 (defalias 'gnus-truncate-string 'truncate-string)
315 'gnus-format-max-width
316 (lambda (form length)
317 (let* ((val (eval form))
318 (valstr (if (numberp val) (int-to-string val) val)))
319 (if (> (length valstr) length)
320 (truncate-string valstr length)
323 (fset 'gnus-summary-make-display-table (lambda () nil))
330 ;; byte-compile-warnings: nil
333 ;;; gnus-ems.el ends here