1 ;;; gnus-xmas.el --- Gnus functions for XEmacs
2 ;; Copyright (C) 1995,96 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 the
21 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
22 ;; Boston, MA 02111-1307, USA.
29 (eval-when-compile (require 'cl))
30 (defvar menu-bar-mode t)
32 (defvar gnus-xmas-glyph-directory nil
33 "*Directory where Gnus logos and icons are located.
34 If this variable is nil, Gnus will try to locate the directory
37 ;;; Internal variables.
39 (defvar gnus-xmas-logo (make-glyph (make-specifier 'image)))
41 ;; Don't warn about these undefined variables.
43 (defvar gnus-group-mode-hook)
44 (defvar gnus-summary-mode-hook)
45 (defvar gnus-article-mode-hook)
48 (defvar gnus-active-hashtb)
49 (defvar gnus-article-buffer)
50 (defvar gnus-auto-center-summary)
51 (defvar gnus-buffer-list)
52 (defvar gnus-current-headers)
53 (defvar gnus-level-killed)
54 (defvar gnus-level-zombie)
55 (defvar gnus-newsgroup-bookmarks)
56 (defvar gnus-newsgroup-dependencies)
57 (defvar gnus-newsgroup-selected-overlay)
58 (defvar gnus-newsrc-hashtb)
59 (defvar gnus-read-mark)
60 (defvar gnus-refer-article-method)
61 (defvar gnus-reffed-article-number)
62 (defvar gnus-unread-mark)
64 (defvar gnus-view-pseudos)
65 (defvar gnus-view-pseudos-separately)
67 (defvar gnus-zombie-list)
68 ;;defined in gnus-msg.el
69 (defvar gnus-article-copy)
70 (defvar gnus-check-before-posting)
71 ;;defined in gnus-vis.el
72 (defvar gnus-article-button-face)
73 (defvar gnus-article-mouse-face)
74 (defvar gnus-summary-selected-face)
75 (defvar gnus-group-reading-menu)
76 (defvar gnus-group-group-menu)
77 (defvar gnus-group-misc-menu)
78 (defvar gnus-summary-article-menu)
79 (defvar gnus-summary-thread-menu)
80 (defvar gnus-summary-misc-menu)
81 (defvar gnus-summary-post-menu)
82 (defvar gnus-summary-kill-menu)
83 (defvar gnus-article-article-menu)
84 (defvar gnus-article-treatment-menu)
86 (defvar standard-display-table)
88 (defun gnus-xmas-set-text-properties (start end props &optional buffer)
89 "You should NEVER use this function. It is ideologically blasphemous.
90 It is provided only to ease porting of broken FSF Emacs programs."
93 (map-extents (lambda (extent ignored)
94 (remove-text-properties
96 (list (extent-property extent 'text-prop) nil)
98 buffer start end nil nil 'text-prop)
99 (add-text-properties start end props buffer)))
101 (defun gnus-xmas-highlight-selected-summary ()
102 ;; Highlight selected article in summary buffer
103 (if gnus-summary-selected-face
105 (if gnus-newsgroup-selected-overlay
106 (delete-extent gnus-newsgroup-selected-overlay))
107 (setq gnus-newsgroup-selected-overlay
108 (make-extent (gnus-point-at-bol) (gnus-point-at-eol)))
109 (set-extent-face gnus-newsgroup-selected-overlay
110 gnus-summary-selected-face))))
112 (defun gnus-xmas-summary-recenter ()
113 (let* ((top (cond ((< (window-height) 4) 0)
114 ((< (window-height) 7) 1)
116 (height (- (window-height) 2))
117 (bottom (save-excursion (goto-char (point-max))
118 (forward-line (- height))
120 (window (get-buffer-window (current-buffer))))
122 ;; The user has to want it,
123 gnus-auto-center-summary
124 ;; the article buffer must be displayed,
125 (get-buffer-window gnus-article-buffer)
126 ;; Set the window start to either `bottom', which is the biggest
127 ;; possible valid number, or the second line from the top,
128 ;; whichever is the least.
130 window (min bottom (save-excursion
131 (forward-line (- top)) (point)))))))
133 (defun gnus-xmas-group-remove-excess-properties ()
135 (beg (progn (forward-line -1) (point))))
136 (remove-text-properties (1+ beg) end '(gnus-group nil))
137 (remove-text-properties
139 '(gnus-topic nil gnus-topic-level nil gnus-topic-visible nil))
142 (defun gnus-xmas-topic-remove-excess-properties ()
144 (beg (progn (forward-line -1) (point))))
145 (remove-text-properties beg end '(gnus-group nil))
148 (defun gnus-xmas-extent-start-open (point)
149 (map-extents (lambda (extent arg)
150 (set-extent-property extent 'start-open t))
151 nil point (min (1+ (point)) (point-max))))
153 (defun gnus-xmas-copy-article-buffer (&optional article-buffer)
154 (setq gnus-article-copy (get-buffer-create " *gnus article copy*"))
155 (buffer-disable-undo gnus-article-copy)
156 (or (memq gnus-article-copy gnus-buffer-list)
157 (setq gnus-buffer-list (cons gnus-article-copy gnus-buffer-list)))
158 (let ((article-buffer (or article-buffer gnus-article-buffer))
160 (if (and (get-buffer article-buffer)
161 (buffer-name (get-buffer article-buffer)))
163 (set-buffer article-buffer)
165 (setq buf (buffer-substring (point-min) (point-max)))
166 (set-buffer gnus-article-copy)
168 (insert (format "%s" buf))))))
170 (defun gnus-xmas-article-push-button (event)
171 "Check text under the mouse pointer for a callback function.
172 If the text under the mouse pointer has a `gnus-callback' property,
173 call it with the value of the `gnus-data' text property."
175 (set-buffer (window-buffer (event-window event)))
176 (let* ((pos (event-closest-point event))
177 (data (get-text-property pos 'gnus-data))
178 (fun (get-text-property pos 'gnus-callback)))
179 (if fun (funcall fun data))))
181 (defun gnus-xmas-move-overlay (extent start end &optional buffer)
182 (set-extent-endpoints extent start end))
184 ;; Fixed by Christopher Davis <ckd@loiosh.kei.com>.
185 (defun gnus-xmas-article-add-button (from to fun &optional data)
186 "Create a button between FROM and TO with callback FUN and data DATA."
187 (and gnus-article-button-face
188 (gnus-overlay-put (gnus-make-overlay from to)
189 'face gnus-article-button-face))
193 (and gnus-article-mouse-face
194 (list 'mouse-face gnus-article-mouse-face))
195 (list 'gnus-callback fun)
196 (and data (list 'gnus-data data))
197 (list 'highlight t))))
199 (defun gnus-xmas-window-top-edge (&optional window)
200 (nth 1 (window-pixel-edges window)))
202 (defun gnus-xmas-tree-minimize ()
203 (when (and gnus-tree-minimize-window
204 (not (one-window-p)))
205 (let* ((window-min-height 2)
206 (height (1+ (count-lines (point-min) (point-max))))
207 (min (max (1- window-min-height) height))
208 (tot (if (numberp gnus-tree-minimize-window)
209 (min gnus-tree-minimize-window min)
211 (win (get-buffer-window (current-buffer)))
212 (wh (and win (1- (window-height win)))))
215 (let ((selected (selected-window)))
217 (enlarge-window (- tot wh))
218 (select-window selected))))))
220 ;; Select the lowest window on the frame.
221 (defun gnus-xmas-appt-select-lowest-window ()
222 (let* ((lowest-window (selected-window))
223 (bottom-edge (car (cdr (cdr (cdr (window-pixel-edges))))))
224 (last-window (previous-window))
227 (let* ((this-window (next-window))
228 (next-bottom-edge (car (cdr (cdr (cdr
231 (if (< bottom-edge next-bottom-edge)
233 (setq bottom-edge next-bottom-edge)
234 (setq lowest-window this-window)))
236 (select-window this-window)
237 (if (eq last-window this-window)
239 (select-window lowest-window)
240 (setq window-search nil)))))))
242 (defmacro gnus-xmas-menu-add (type &rest menus)
243 `(gnus-xmas-menu-add-1 ',type ',menus))
244 (put 'gnus-xmas-menu-add 'lisp-indent-function 1)
245 (put 'gnus-xmas-menu-add 'lisp-indent-hook 1)
247 (defun gnus-xmas-menu-add-1 (type menus)
248 (when (and menu-bar-mode
249 (gnus-visual-p (intern (format "%s-menu" type)) 'menu))
251 (easy-menu-add (symbol-value (pop menus))))))
253 (defun gnus-xmas-group-menu-add ()
254 (gnus-xmas-menu-add group
255 gnus-group-reading-menu gnus-group-group-menu gnus-group-misc-menu))
257 (defun gnus-xmas-summary-menu-add ()
258 (gnus-xmas-menu-add summary
259 gnus-summary-article-menu gnus-summary-thread-menu
260 gnus-summary-misc-menu gnus-summary-post-menu gnus-summary-kill-menu))
262 (defun gnus-xmas-article-menu-add ()
263 (gnus-xmas-menu-add article
264 gnus-article-article-menu gnus-article-treatment-menu))
266 (defun gnus-xmas-pick-menu-add ()
267 (gnus-xmas-menu-add pick
270 (defun gnus-xmas-binary-menu-add ()
271 (gnus-xmas-menu-add binary
274 (defun gnus-xmas-tree-menu-add ()
275 (gnus-xmas-menu-add tree
278 (defun gnus-xmas-grouplens-menu-add ()
279 (gnus-xmas-menu-add grouplens
280 gnus-grouplens-menu))
282 (defun gnus-xmas-read-event-char ()
283 "Get the next event."
284 (let ((event (next-event)))
285 ;; We junk all non-key events. Is this naughty?
286 (while (not (key-press-event-p event))
287 (setq event (next-event)))
288 (cons (and (key-press-event-p event)
289 ; (numberp (event-key event))
290 (event-to-character event))
293 (defun gnus-xmas-seconds-since-epoch (date)
294 "Return a floating point number that says how many seconds have lapsed between Jan 1 12:00:00 1970 and DATE."
295 (let* ((tdate (mapcar (lambda (ti) (and ti (string-to-int ti)))
296 (timezone-parse-date date)))
297 (ttime (mapcar (lambda (ti) (and ti (string-to-int ti)))
299 (aref (timezone-parse-date date) 3))))
300 (edate (mapcar (lambda (ti) (and ti (string-to-int ti)))
301 (timezone-parse-date "Jan 1 12:00:00 1970")))
302 (tday (- (timezone-absolute-from-gregorian
303 (nth 1 tdate) (nth 2 tdate) (nth 0 tdate))
304 (timezone-absolute-from-gregorian
305 (nth 1 edate) (nth 2 edate) (nth 0 edate)))))
308 (* (float (nth 0 ttime)) 60 60)
309 (* (float tday) 60 60 24))))
311 (defun gnus-xmas-define ()
312 (setq gnus-mouse-2 [button2])
314 (or (memq 'underline (list-faces))
315 (and (fboundp 'make-face)
316 (funcall (intern "make-face") 'underline)))
317 ;; Must avoid calling set-face-underline-p directly, because it
318 ;; is a defsubst in emacs19, and will make the .elc files non
320 (or (face-differs-from-default-p 'underline)
321 (funcall (intern "set-face-underline-p") 'underline t))
323 (fset 'gnus-make-overlay 'make-extent)
324 (fset 'gnus-overlay-put 'set-extent-property)
325 (fset 'gnus-move-overlay 'gnus-xmas-move-overlay)
326 (fset 'gnus-overlay-end 'extent-end-position)
327 (fset 'gnus-extent-detached-p 'extent-detached-p)
329 (require 'text-props)
330 (if (< emacs-minor-version 14)
331 (fset 'gnus-set-text-properties 'gnus-xmas-set-text-properties))
333 (fset 'nnheader-find-file-noselect 'gnus-xmas-find-file-noselect)
335 (or (boundp 'standard-display-table) (setq standard-display-table nil))
337 (defvar gnus-mouse-face-prop 'highlight)
339 (unless (fboundp 'encode-time)
340 (defun encode-time (sec minute hour day month year &optional zone)
342 (gnus-xmas-seconds-since-epoch
343 (timezone-make-arpa-date
344 year month day (timezone-make-time-string hour minute sec)
346 (list (floor (/ seconds (expt 2 16)))
347 (round (mod seconds (expt 2 16)))))))
349 (defun gnus-byte-code (func)
350 "Return a form that can be `eval'ed based on FUNC."
351 (let ((fval (symbol-function func)))
352 (if (byte-code-function-p fval)
354 (cons 'progn (cdr (cdr fval))))))
356 ;; Fix by "jeff (j.d.) sparkes" <jsparkes@bnr.ca>.
357 (defvar gnus-display-type (device-class)
358 "A symbol indicating the display Emacs is running under.
359 The symbol should be one of `color', `grayscale' or `mono'. If Emacs
360 guesses this display attribute wrongly, either set this variable in
361 your `~/.emacs' or set the resource `Emacs.displayType' in your
362 `~/.Xdefaults'. See also `gnus-background-mode'.
364 This is a meta-variable that will affect what default values other
365 variables get. You would normally not change this variable, but
366 pounce directly on the real variables themselves.")
369 (fset 'gnus-x-color-values
370 (if (fboundp 'x-color-values)
373 (color-instance-rgb-components
374 (make-color-instance color)))))
376 (defvar gnus-background-mode
379 (x-get-resource ".backgroundMode" "BackgroundMode" 'string)
381 (params (frame-parameters)))
382 (cond (bg-resource (intern (downcase bg-resource)))
383 ((and (assq 'background-color params)
384 (< (apply '+ (gnus-x-color-values
385 (cdr (assq 'background-color params))))
386 (/ (apply '+ (gnus-x-color-values "white")) 3)))
389 "A symbol indicating the Emacs background brightness.
390 The symbol should be one of `light' or `dark'.
391 If Emacs guesses this frame attribute wrongly, either set this variable in
392 your `~/.emacs' or set the resource `Emacs.backgroundMode' in your
394 See also `gnus-display-type'.
396 This is a meta-variable that will affect what default values other
397 variables get. You would normally not change this variable, but
398 pounce directly on the real variables themselves.")
403 (defun gnus-xmas-redefine ()
404 "Redefine lots of Gnus functions for XEmacs."
405 (fset 'gnus-summary-make-display-table (lambda () nil))
406 (fset 'gnus-visual-turn-off-edit-menu 'identity)
407 (fset 'gnus-highlight-selected-summary
408 'gnus-xmas-highlight-selected-summary)
409 (fset 'gnus-summary-recenter 'gnus-xmas-summary-recenter)
410 (fset 'gnus-group-remove-excess-properties
411 'gnus-xmas-group-remove-excess-properties)
412 (fset 'gnus-topic-remove-excess-properties
413 'gnus-xmas-topic-remove-excess-properties)
414 (fset 'gnus-extent-start-open 'gnus-xmas-extent-start-open)
415 (fset 'gnus-copy-article-buffer 'gnus-xmas-copy-article-buffer)
416 (fset 'gnus-article-push-button 'gnus-xmas-article-push-button)
417 (fset 'gnus-article-add-button 'gnus-xmas-article-add-button)
418 (fset 'gnus-window-top-edge 'gnus-xmas-window-top-edge)
419 (fset 'gnus-read-event-char 'gnus-xmas-read-event-char)
420 (fset 'gnus-group-startup-message 'gnus-xmas-group-startup-message)
421 (fset 'gnus-tree-minimize 'gnus-xmas-tree-minimize)
422 (fset 'gnus-appt-select-lowest-window
423 'gnus-xmas-appt-select-lowest-window)
424 (fset 'gnus-mail-strip-quoted-names 'gnus-xmas-mail-strip-quoted-names)
426 (add-hook 'gnus-group-mode-hook 'gnus-xmas-group-menu-add)
427 (add-hook 'gnus-summary-mode-hook 'gnus-xmas-summary-menu-add)
428 (add-hook 'gnus-article-mode-hook 'gnus-xmas-article-menu-add)
430 (add-hook 'gnus-pick-mode-hook 'gnus-xmas-pick-menu-add)
431 (add-hook 'gnus-tree-mode-hook 'gnus-xmas-tree-menu-add)
432 (add-hook 'gnus-binary-mode-hook 'gnus-xmas-binary-menu-add)
433 (add-hook 'gnus-grouplens-mode-hook 'gnus-xmas-grouplens-menu-add)
435 (add-hook 'gnus-group-mode-hook 'gnus-xmas-setup-group-toolbar)
436 (add-hook 'gnus-summary-mode-hook 'gnus-xmas-setup-summary-toolbar))
439 ;;; XEmacs logo and toolbar.
441 (defun gnus-xmas-find-glyph-directory ()
442 (or gnus-xmas-glyph-directory ; We have a dir already...
443 (let ((path load-path)
445 ;; We try to find the dir by looking at the load path,
446 ;; stripping away the last component and adding "etc/".
449 (file-name-directory (directory-file-name (car path)))
451 (if (and (file-exists-p dir)
452 (file-directory-p dir)
453 (file-exists-p (concat dir "gnus-group-exit-icon-up.xpm")))
454 (setq gnus-xmas-glyph-directory dir
456 (setq path (cdr path))))
457 gnus-xmas-glyph-directory)))
459 (defun gnus-xmas-group-startup-message (&optional x y)
460 "Insert startup message in current buffer."
461 ;; Insert the message.
462 (gnus-xmas-find-glyph-directory)
464 (let ((file (and gnus-xmas-glyph-directory
466 (file-name-as-directory gnus-xmas-glyph-directory)
468 (if (and (featurep 'xpm)
469 (not (equal (device-type) 'tty))
470 file (file-exists-p file))
472 (set-glyph-property gnus-xmas-logo 'image file)
473 (set-glyph-image gnus-xmas-logo file 'global 'x)
476 (set-extent-begin-glyph (make-extent (point) (point)) gnus-xmas-logo)
477 (goto-char (point-min))
479 (insert (make-string (/ (max (- (window-width) (or x 35)) 0) 2)
482 (goto-char (point-min))
483 (let* ((pheight (+ 20 (count-lines (point-min) (point-max))))
484 (wheight (window-height))
485 (rest (- wheight pheight)))
486 (insert (make-string (max 0 (* 2 (/ rest 3))) ?\n))))
491 _ ___ __ ___ __ _ ___
511 (gnus-indent-rigidly (point-min) (point-max)
512 (/ (max (- (window-width) (or x 46)) 0) 2))
513 (goto-char (point-min))
515 (let* ((pheight (count-lines (point-min) (point-max)))
516 (wheight (window-height))
517 (rest (- wheight pheight)))
518 (insert (make-string (max 0 (* 2 (/ rest 3))) ?\n))))
520 (goto-char (point-min))
521 (and (search-forward "Praxis" nil t)
522 (put-text-property (match-beginning 0) (match-end 0) 'face 'bold))
523 (goto-char (point-min))
524 (let* ((mode-string (gnus-group-set-mode-line)))
525 (setq mode-line-buffer-identification
526 (list (concat gnus-version (substring (car mode-string) 4))))
527 (set-buffer-modified-p t))))
532 (defvar gnus-use-toolbar 'default-toolbar
533 "*If nil, do not use a toolbar.
534 If it is non-nil, it must be a toolbar. The five legal values are
535 `default-toolbar', `top-toolbar', `bottom-toolbar',
536 `right-toolbar', and `left-toolbar'.")
538 (defvar gnus-group-toolbar
539 '([gnus-group-exit-icon gnus-group-exit t "Exit Gnus"]
540 [gnus-group-kill-group-icon gnus-group-kill-group t "Kill group"]
541 [gnus-group-get-new-news-icon gnus-group-get-new-news t "Get new news"]
542 [gnus-group-get-new-news-this-group-icon
543 gnus-group-get-new-news-this-group t "Get new news in this group"]
544 [gnus-group-catchup-current-icon
545 gnus-group-catchup-current t "Catchup group"]
546 [gnus-group-describe-group-icon
547 gnus-group-describe-group t "Describe group"])
548 "The group buffer toolbar.")
550 (defvar gnus-summary-toolbar
551 '([gnus-summary-post-news-icon
552 gnus-summary-post-news t "Post an article"]
553 [gnus-summary-save-article-file-icon
554 gnus-summary-save-article-file t "Save article in file"]
555 [gnus-summary-save-article-icon
556 gnus-summary-save-article t "Save article"]
557 [gnus-summary-reply-icon
558 gnus-summary-reply t "Mail a reply"]
559 [gnus-summary-reply-with-original-icon
560 gnus-summary-reply-with-original t "Mail a reply and yank the original"]
561 [gnus-summary-followup-icon
562 gnus-summary-followup t "Post a followup"]
563 [gnus-summary-followup-with-original-icon
564 gnus-summary-followup-with-original t
565 "Post a followup and yank the original"]
566 [gnus-uu-decode-uu-icon
567 gnus-uu-decode-uu t "Decode uuencoded articles"]
568 [gnus-uu-post-news-icon
569 gnus-uu-post-news t "Post an uuencoded article"]
570 [gnus-summary-caesar-message-icon
571 gnus-summary-caesar-message t "Rot 13"]
572 [gnus-summary-cancel-article-icon
573 gnus-summary-cancel-article t "Cancel article"])
574 "The summary buffer toolbar.")
576 (defun gnus-xmas-setup-toolbar (bar &optional force)
577 (let ((dir (gnus-xmas-find-glyph-directory))
578 icon up down disabled name)
582 (boundp (aref (car bar) 0)))
585 (setq icon (aref (car bar) 0)
586 name (symbol-name icon)
588 (setq up (concat dir name "-up.xpm"))
589 (setq down (concat dir name "-down.xpm"))
590 (setq disabled (concat dir name "-disabled.xpm"))
591 (if (not (file-exists-p up))
593 (set icon (toolbar-make-button-list
594 up (and (file-exists-p down) down)
595 (and (file-exists-p disabled) disabled)))))
598 (defun gnus-xmas-setup-group-toolbar ()
599 (and gnus-use-toolbar
600 (gnus-xmas-setup-toolbar gnus-group-toolbar)
601 (set-specifier (symbol-value gnus-use-toolbar)
602 (cons (current-buffer) gnus-group-toolbar))))
604 (defun gnus-xmas-setup-summary-toolbar ()
605 (and gnus-use-toolbar
606 (gnus-xmas-setup-toolbar gnus-summary-toolbar)
607 (set-specifier (symbol-value gnus-use-toolbar)
608 (cons (current-buffer) gnus-summary-toolbar))))
610 ;; Written by Erik Naggum <erik@naggum.no>.
611 ;; Saved by Steve Baur <steve@miranova.com>.
612 (or (fboundp 'insert-file-contents-literally)
613 (defun insert-file-contents-literally (filename &optional visit beg end replace)
614 "Like `insert-file-contents', q.v., but only reads in the file.
615 A buffer may be modified in several ways after reading into the buffer due
616 to advanced Emacs features, such as file-name-handlers, format decoding,
617 find-file-hooks, etc.
618 This function ensures that none of these modifications will take place."
619 (let ( ; (file-name-handler-alist nil)
621 (after-insert-file-functions nil)
622 (find-buffer-file-type-function
623 (if (fboundp 'find-buffer-file-type)
624 (symbol-function 'find-buffer-file-type)
628 (fset 'find-buffer-file-type (lambda (filename) t))
629 (insert-file-contents filename visit beg end replace))
630 (if find-buffer-file-type-function
631 (fset 'find-buffer-file-type find-buffer-file-type-function)
632 (fmakunbound 'find-buffer-file-type))))))
634 (defun gnus-xmas-find-file-noselect (filename &optional nowarn rawfile)
635 "Read file FILENAME into a buffer and return the buffer.
636 If a buffer exists visiting FILENAME, return that one, but
637 verify that the file has not changed since visited or saved.
638 The buffer is not selected, just returned to the caller."
640 (abbreviate-file-name
641 (expand-file-name filename)))
642 (if (file-directory-p filename)
643 (if find-file-run-dired
644 (dired-noselect filename)
645 (error "%s is a directory." filename))
646 (let* ((buf (get-file-buffer filename))
647 (truename (abbreviate-file-name (file-truename filename)))
648 (number (nthcdr 10 (file-attributes truename)))
649 ;; Find any buffer for a file which has same truename.
650 (other (and (not buf)
651 (if (fboundp 'find-buffer-visiting)
652 (find-buffer-visiting filename)
653 (get-file-buffer filename))))
655 ;; Let user know if there is a buffer with the same truename.
659 (string-equal filename (buffer-file-name other))
660 (message "%s and %s are the same file"
661 filename (buffer-file-name other)))
662 ;; Optionally also find that buffer.
663 (if (or (and (boundp 'find-file-existing-other-name)
664 find-file-existing-other-name)
665 find-file-visit-truename)
669 (verify-visited-file-modtime buf)
670 (cond ((not (file-exists-p filename))
671 (error "File %s no longer exists!" filename))
673 (if (string= (file-name-nondirectory filename)
676 (if (buffer-modified-p buf)
677 "File %s changed on disk. Discard your edits? "
678 "File %s changed on disk. Reread from disk? ")
679 (file-name-nondirectory filename))
681 (if (buffer-modified-p buf)
682 "File %s changed on disk. Discard your edits in %s? "
683 "File %s changed on disk. Reread from disk into %s? ")
684 (file-name-nondirectory filename)
688 (revert-buffer t t)))))
690 ;;; The truename stuff makes this obsolete.
691 ;;; (let* ((link-name (car (file-attributes filename)))
692 ;;; (linked-buf (and (stringp link-name)
693 ;;; (get-file-buffer link-name))))
694 ;;; (if (bufferp linked-buf)
695 ;;; (message "Symbolic link to file in buffer %s"
696 ;;; (buffer-name linked-buf))))
697 (setq buf (create-file-buffer filename))
698 ;; (set-buffer-major-mode buf)
703 (insert-file-contents-literally filename t)
705 ;; Unconditionally set error
708 (insert-file-contents filename t)
710 ;; Run find-file-not-found-hooks until one returns non-nil.
711 (or t ; (run-hook-with-args-until-success 'find-file-not-found-hooks)
712 ;; If they fail too, set error.
714 ;; Find the file's truename, and maybe use that as visited name.
715 (setq buffer-file-truename truename)
716 (setq buffer-file-number number)
717 ;; On VMS, we may want to remember which directory in a search list
718 ;; the file was found in.
719 (and (eq system-type 'vax-vms)
721 (if (string-match ":" (file-name-directory filename))
722 (setq logical (substring (file-name-directory filename)
723 0 (match-beginning 0))))
724 (not (member logical find-file-not-true-dirname-list)))
725 (setq buffer-file-name buffer-file-truename))
726 (if find-file-visit-truename
727 (setq buffer-file-name
729 (expand-file-name buffer-file-truename))))
730 ;; Set buffer's default directory to that of the file.
731 (setq default-directory (file-name-directory filename))
732 ;; Turn off backup files for certain file names. Since
733 ;; this is a permanent local, the major mode won't eliminate it.
734 (and (not (funcall backup-enable-predicate buffer-file-name))
736 (make-local-variable 'backup-inhibited)
737 (setq backup-inhibited t)))
740 (after-find-file error (not nowarn)))))
743 (defun gnus-xmas-mail-strip-quoted-names (address)
744 "Protect mail-strip-quoted-names from NIL input.
745 XEmacs compatibility workaround."
748 (mail-strip-quoted-names address)))
750 ;;; gnus-xmas.el ends here