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))))
171 (defun gnus-xmas-article-push-button (event)
172 "Check text under the mouse pointer for a callback function.
173 If the text under the mouse pointer has a `gnus-callback' property,
174 call it with the value of the `gnus-data' text property."
176 (set-buffer (window-buffer (event-window event)))
177 (let* ((pos (event-closest-point event))
178 (data (get-text-property pos 'gnus-data))
179 (fun (get-text-property pos 'gnus-callback)))
180 (if fun (funcall fun data))))
182 (defun gnus-xmas-move-overlay (extent start end &optional buffer)
183 (set-extent-endpoints extent start end))
185 ;; Fixed by Christopher Davis <ckd@loiosh.kei.com>.
186 (defun gnus-xmas-article-add-button (from to fun &optional data)
187 "Create a button between FROM and TO with callback FUN and data DATA."
188 (and gnus-article-button-face
189 (gnus-overlay-put (gnus-make-overlay from to)
190 'face gnus-article-button-face))
194 (and gnus-article-mouse-face
195 (list 'mouse-face gnus-article-mouse-face))
196 (list 'gnus-callback fun)
197 (and data (list 'gnus-data data))
198 (list 'highlight t))))
200 (defun gnus-xmas-window-top-edge (&optional window)
201 (nth 1 (window-pixel-edges window)))
203 (defun gnus-xmas-tree-minimize ()
204 (when (and gnus-tree-minimize-window
205 (not (one-window-p)))
206 (let* ((window-min-height 2)
207 (height (1+ (count-lines (point-min) (point-max))))
208 (min (max (1- window-min-height) height))
209 (tot (if (numberp gnus-tree-minimize-window)
210 (min gnus-tree-minimize-window min)
212 (win (get-buffer-window (current-buffer)))
213 (wh (and win (1- (window-height win)))))
216 (let ((selected (selected-window)))
218 (enlarge-window (- tot wh))
219 (select-window selected))))))
221 ;; Select the lowest window on the frame.
222 (defun gnus-xmas-appt-select-lowest-window ()
223 (let* ((lowest-window (selected-window))
224 (bottom-edge (car (cdr (cdr (cdr (window-pixel-edges))))))
225 (last-window (previous-window))
228 (let* ((this-window (next-window))
229 (next-bottom-edge (car (cdr (cdr (cdr
232 (if (< bottom-edge next-bottom-edge)
234 (setq bottom-edge next-bottom-edge)
235 (setq lowest-window this-window)))
237 (select-window this-window)
238 (if (eq last-window this-window)
240 (select-window lowest-window)
241 (setq window-search nil)))))))
243 (defmacro gnus-xmas-menu-add (type &rest menus)
244 `(gnus-xmas-menu-add-1 ',type ',menus))
245 (put 'gnus-xmas-menu-add 'lisp-indent-function 1)
246 (put 'gnus-xmas-menu-add 'lisp-indent-hook 1)
248 (defun gnus-xmas-menu-add-1 (type menus)
249 (when (and menu-bar-mode
250 (gnus-visual-p (intern (format "%s-menu" type)) 'menu))
252 (easy-menu-add (symbol-value (pop menus))))))
254 (defun gnus-xmas-group-menu-add ()
255 (gnus-xmas-menu-add group
256 gnus-group-reading-menu gnus-group-group-menu gnus-group-misc-menu))
258 (defun gnus-xmas-summary-menu-add ()
259 (gnus-xmas-menu-add summary
260 gnus-summary-article-menu gnus-summary-thread-menu
261 gnus-summary-misc-menu gnus-summary-post-menu gnus-summary-kill-menu))
263 (defun gnus-xmas-article-menu-add ()
264 (gnus-xmas-menu-add article
265 gnus-article-article-menu gnus-article-treatment-menu))
267 (defun gnus-xmas-pick-menu-add ()
268 (gnus-xmas-menu-add pick
271 (defun gnus-xmas-binary-menu-add ()
272 (gnus-xmas-menu-add binary
275 (defun gnus-xmas-tree-menu-add ()
276 (gnus-xmas-menu-add tree
279 (defun gnus-xmas-grouplens-menu-add ()
280 (gnus-xmas-menu-add grouplens
281 gnus-grouplens-menu))
283 (defun gnus-xmas-read-event-char ()
284 "Get the next event."
285 (let ((event (next-event)))
286 ;; We junk all non-key events. Is this naughty?
287 (while (not (key-press-event-p event))
288 (setq event (next-event)))
289 (cons (and (key-press-event-p event)
290 ; (numberp (event-key event))
291 (event-to-character event))
294 (defun gnus-xmas-seconds-since-epoch (date)
295 "Return a floating point number that says how many seconds have lapsed between Jan 1 12:00:00 1970 and DATE."
296 (let* ((tdate (mapcar (lambda (ti) (and ti (string-to-int ti)))
297 (timezone-parse-date date)))
298 (ttime (mapcar (lambda (ti) (and ti (string-to-int ti)))
300 (aref (timezone-parse-date date) 3))))
301 (edate (mapcar (lambda (ti) (and ti (string-to-int ti)))
302 (timezone-parse-date "Jan 1 12:00:00 1970")))
303 (tday (- (timezone-absolute-from-gregorian
304 (nth 1 tdate) (nth 2 tdate) (nth 0 tdate))
305 (timezone-absolute-from-gregorian
306 (nth 1 edate) (nth 2 edate) (nth 0 edate)))))
309 (* (float (nth 0 ttime)) 60 60)
310 (* (float tday) 60 60 24))))
312 (defun gnus-xmas-define ()
313 (setq gnus-mouse-2 [button2])
315 (or (memq 'underline (list-faces))
316 (and (fboundp 'make-face)
317 (funcall (intern "make-face") 'underline)))
318 ;; Must avoid calling set-face-underline-p directly, because it
319 ;; is a defsubst in emacs19, and will make the .elc files non
321 (or (face-differs-from-default-p 'underline)
322 (funcall (intern "set-face-underline-p") 'underline t))
324 (fset 'gnus-make-overlay 'make-extent)
325 (fset 'gnus-overlay-put 'set-extent-property)
326 (fset 'gnus-move-overlay 'gnus-xmas-move-overlay)
327 (fset 'gnus-overlay-end 'extent-end-position)
328 (fset 'gnus-extent-detached-p 'extent-detached-p)
330 (require 'text-props)
331 (if (< emacs-minor-version 14)
332 (fset 'gnus-set-text-properties 'gnus-xmas-set-text-properties))
334 (fset 'nnheader-find-file-noselect 'gnus-xmas-find-file-noselect)
336 (or (boundp 'standard-display-table) (setq standard-display-table nil))
338 (defvar gnus-mouse-face-prop 'highlight)
340 (unless (fboundp 'encode-time)
341 (defun encode-time (sec minute hour day month year &optional zone)
343 (gnus-xmas-seconds-since-epoch
344 (timezone-make-arpa-date
345 year month day (timezone-make-time-string hour minute sec)
347 (list (floor (/ seconds (expt 2 16)))
348 (round (mod seconds (expt 2 16)))))))
350 (defun gnus-byte-code (func)
351 "Return a form that can be `eval'ed based on FUNC."
352 (let ((fval (symbol-function func)))
353 (if (byte-code-function-p fval)
355 (cons 'progn (cdr (cdr fval))))))
357 ;; Fix by "jeff (j.d.) sparkes" <jsparkes@bnr.ca>.
358 (defvar gnus-display-type (device-class)
359 "A symbol indicating the display Emacs is running under.
360 The symbol should be one of `color', `grayscale' or `mono'. If Emacs
361 guesses this display attribute wrongly, either set this variable in
362 your `~/.emacs' or set the resource `Emacs.displayType' in your
363 `~/.Xdefaults'. See also `gnus-background-mode'.
365 This is a meta-variable that will affect what default values other
366 variables get. You would normally not change this variable, but
367 pounce directly on the real variables themselves.")
370 (fset 'gnus-x-color-values
371 (if (fboundp 'x-color-values)
374 (color-instance-rgb-components
375 (make-color-instance color)))))
377 (defvar gnus-background-mode
380 (x-get-resource ".backgroundMode" "BackgroundMode" 'string)
382 (params (frame-parameters))
383 (color (condition-case ()
384 (or (assq 'background-color params)
387 (face-background 'default))))
389 (cond (bg-resource (intern (downcase bg-resource)))
391 (< (apply '+ (gnus-x-color-values color))
392 (/ (apply '+ (gnus-x-color-values "white")) 3)))
395 "A symbol indicating the Emacs background brightness.
396 The symbol should be one of `light' or `dark'.
397 If Emacs guesses this frame attribute wrongly, either set this variable in
398 your `~/.emacs' or set the resource `Emacs.backgroundMode' in your
400 See also `gnus-display-type'.
402 This is a meta-variable that will affect what default values other
403 variables get. You would normally not change this variable, but
404 pounce directly on the real variables themselves.")
409 (defun gnus-xmas-redefine ()
410 "Redefine lots of Gnus functions for XEmacs."
411 (fset 'gnus-summary-make-display-table 'ignore)
412 (fset 'gnus-visual-turn-off-edit-menu 'identity)
413 (fset 'gnus-highlight-selected-summary
414 'gnus-xmas-highlight-selected-summary)
415 (fset 'gnus-summary-recenter 'gnus-xmas-summary-recenter)
416 (fset 'gnus-group-remove-excess-properties
417 'gnus-xmas-group-remove-excess-properties)
418 (fset 'gnus-topic-remove-excess-properties
419 'gnus-xmas-topic-remove-excess-properties)
420 (fset 'gnus-extent-start-open 'gnus-xmas-extent-start-open)
421 (fset 'gnus-copy-article-buffer 'gnus-xmas-copy-article-buffer)
422 (fset 'gnus-article-push-button 'gnus-xmas-article-push-button)
423 (fset 'gnus-article-add-button 'gnus-xmas-article-add-button)
424 (fset 'gnus-window-top-edge 'gnus-xmas-window-top-edge)
425 (fset 'gnus-read-event-char 'gnus-xmas-read-event-char)
426 (fset 'gnus-group-startup-message 'gnus-xmas-group-startup-message)
427 (fset 'gnus-tree-minimize 'gnus-xmas-tree-minimize)
428 (fset 'gnus-appt-select-lowest-window
429 'gnus-xmas-appt-select-lowest-window)
430 (fset 'gnus-mail-strip-quoted-names 'gnus-xmas-mail-strip-quoted-names)
431 (fset 'gnus-make-local-hook 'make-local-variable)
432 (fset 'gnus-character-to-event 'character-to-event)
434 (add-hook 'gnus-group-mode-hook 'gnus-xmas-group-menu-add)
435 (add-hook 'gnus-summary-mode-hook 'gnus-xmas-summary-menu-add)
436 (add-hook 'gnus-article-mode-hook 'gnus-xmas-article-menu-add)
438 (add-hook 'gnus-pick-mode-hook 'gnus-xmas-pick-menu-add)
439 (add-hook 'gnus-tree-mode-hook 'gnus-xmas-tree-menu-add)
440 (add-hook 'gnus-binary-mode-hook 'gnus-xmas-binary-menu-add)
441 (add-hook 'gnus-grouplens-mode-hook 'gnus-xmas-grouplens-menu-add)
443 (add-hook 'gnus-group-mode-hook 'gnus-xmas-setup-group-toolbar)
444 (add-hook 'gnus-summary-mode-hook 'gnus-xmas-setup-summary-toolbar))
447 ;;; XEmacs logo and toolbar.
449 (defun gnus-xmas-find-glyph-directory ()
450 (or gnus-xmas-glyph-directory ; We have a dir already...
451 (let ((path load-path)
453 ;; We try to find the dir by looking at the load path,
454 ;; stripping away the last component and adding "etc/".
460 (directory-file-name (car path)))
462 (file-directory-p dir)
463 (file-exists-p (concat dir "gnus-group-exit-icon-up.xpm")))
464 (setq gnus-xmas-glyph-directory dir
466 (setq path (cdr path))))
467 gnus-xmas-glyph-directory)))
469 (defun gnus-xmas-group-startup-message (&optional x y)
470 "Insert startup message in current buffer."
471 ;; Insert the message.
472 (gnus-xmas-find-glyph-directory)
474 (let ((file (and gnus-xmas-glyph-directory
476 (file-name-as-directory gnus-xmas-glyph-directory)
478 (if (and (featurep 'xpm)
479 (not (equal (device-type) 'tty))
480 file (file-exists-p file))
482 (set-glyph-property gnus-xmas-logo 'image file)
483 (set-glyph-image gnus-xmas-logo file 'global 'x)
486 (set-extent-begin-glyph (make-extent (point) (point)) gnus-xmas-logo)
487 (goto-char (point-min))
489 (insert (make-string (/ (max (- (window-width) (or x 35)) 0) 2)
492 (goto-char (point-min))
493 (let* ((pheight (+ 20 (count-lines (point-min) (point-max))))
494 (wheight (window-height))
495 (rest (- wheight pheight)))
496 (insert (make-string (max 0 (* 2 (/ rest 3))) ?\n))))
501 _ ___ __ ___ __ _ ___
521 (gnus-indent-rigidly (point-min) (point-max)
522 (/ (max (- (window-width) (or x 46)) 0) 2))
523 (goto-char (point-min))
525 (let* ((pheight (count-lines (point-min) (point-max)))
526 (wheight (window-height))
527 (rest (- wheight pheight)))
528 (insert (make-string (max 0 (* 2 (/ rest 3))) ?\n))))
530 (goto-char (point-min))
531 (and (search-forward "Praxis" nil t)
532 (put-text-property (match-beginning 0) (match-end 0) 'face 'bold))
533 (goto-char (point-min))
534 (let* ((mode-string (gnus-group-set-mode-line)))
535 (setq mode-line-buffer-identification
536 (list (concat gnus-version (substring (car mode-string) 4))))
537 (set-buffer-modified-p t))))
542 (defvar gnus-use-toolbar 'default-toolbar
543 "*If nil, do not use a toolbar.
544 If it is non-nil, it must be a toolbar. The five legal values are
545 `default-toolbar', `top-toolbar', `bottom-toolbar',
546 `right-toolbar', and `left-toolbar'.")
548 (defvar gnus-group-toolbar
549 '([gnus-group-exit-icon gnus-group-exit t "Exit Gnus"]
550 [gnus-group-kill-group-icon gnus-group-kill-group t "Kill group"]
551 [gnus-group-get-new-news-icon gnus-group-get-new-news t "Get new news"]
552 [gnus-group-get-new-news-this-group-icon
553 gnus-group-get-new-news-this-group t "Get new news in this group"]
554 [gnus-group-catchup-current-icon
555 gnus-group-catchup-current t "Catchup group"]
556 [gnus-group-describe-group-icon
557 gnus-group-describe-group t "Describe group"])
558 "The group buffer toolbar.")
560 (defvar gnus-summary-toolbar
561 '([gnus-summary-post-news-icon
562 gnus-summary-post-news t "Post an article"]
563 [gnus-summary-save-article-file-icon
564 gnus-summary-save-article-file t "Save article in file"]
565 [gnus-summary-save-article-icon
566 gnus-summary-save-article t "Save article"]
567 [gnus-summary-reply-icon
568 gnus-summary-reply t "Mail a reply"]
569 [gnus-summary-reply-with-original-icon
570 gnus-summary-reply-with-original t "Mail a reply and yank the original"]
571 [gnus-summary-followup-icon
572 gnus-summary-followup t "Post a followup"]
573 [gnus-summary-followup-with-original-icon
574 gnus-summary-followup-with-original t
575 "Post a followup and yank the original"]
576 [gnus-uu-decode-uu-icon
577 gnus-uu-decode-uu t "Decode uuencoded articles"]
578 [gnus-uu-post-news-icon
579 gnus-uu-post-news t "Post an uuencoded article"]
580 [gnus-summary-caesar-message-icon
581 gnus-summary-caesar-message t "Rot 13"]
582 [gnus-summary-cancel-article-icon
583 gnus-summary-cancel-article t "Cancel article"])
584 "The summary buffer toolbar.")
586 (defun gnus-xmas-setup-toolbar (bar &optional force)
587 (let ((dir (gnus-xmas-find-glyph-directory))
588 icon up down disabled name)
592 (boundp (aref (car bar) 0)))
595 (setq icon (aref (car bar) 0)
596 name (symbol-name icon)
598 (setq up (concat dir name "-up.xpm"))
599 (setq down (concat dir name "-down.xpm"))
600 (setq disabled (concat dir name "-disabled.xpm"))
601 (if (not (file-exists-p up))
603 (set icon (toolbar-make-button-list
604 up (and (file-exists-p down) down)
605 (and (file-exists-p disabled) disabled)))))
608 (defun gnus-xmas-setup-group-toolbar ()
609 (and gnus-use-toolbar
610 (gnus-xmas-setup-toolbar gnus-group-toolbar)
611 (set-specifier (symbol-value gnus-use-toolbar)
612 (cons (current-buffer) gnus-group-toolbar))))
614 (defun gnus-xmas-setup-summary-toolbar ()
615 (and gnus-use-toolbar
616 (gnus-xmas-setup-toolbar gnus-summary-toolbar)
617 (set-specifier (symbol-value gnus-use-toolbar)
618 (cons (current-buffer) gnus-summary-toolbar))))
620 ;; Written by Erik Naggum <erik@naggum.no>.
621 ;; Saved by Steve Baur <steve@miranova.com>.
622 (or (fboundp 'insert-file-contents-literally)
623 (defun insert-file-contents-literally (filename &optional visit beg end replace)
624 "Like `insert-file-contents', q.v., but only reads in the file.
625 A buffer may be modified in several ways after reading into the buffer due
626 to advanced Emacs features, such as file-name-handlers, format decoding,
627 find-file-hooks, etc.
628 This function ensures that none of these modifications will take place."
629 (let ( ; (file-name-handler-alist nil)
631 (after-insert-file-functions nil)
632 (find-buffer-file-type-function
633 (if (fboundp 'find-buffer-file-type)
634 (symbol-function 'find-buffer-file-type)
638 (fset 'find-buffer-file-type (lambda (filename) t))
639 (insert-file-contents filename visit beg end replace))
640 (if find-buffer-file-type-function
641 (fset 'find-buffer-file-type find-buffer-file-type-function)
642 (fmakunbound 'find-buffer-file-type))))))
644 (defun gnus-xmas-find-file-noselect (filename &optional nowarn rawfile)
645 "Read file FILENAME into a buffer and return the buffer.
646 If a buffer exists visiting FILENAME, return that one, but
647 verify that the file has not changed since visited or saved.
648 The buffer is not selected, just returned to the caller."
650 (abbreviate-file-name
651 (expand-file-name filename)))
652 (if (file-directory-p filename)
653 (if find-file-run-dired
654 (dired-noselect filename)
655 (error "%s is a directory." filename))
656 (let* ((buf (get-file-buffer filename))
657 (truename (abbreviate-file-name (file-truename filename)))
658 (number (nthcdr 10 (file-attributes truename)))
659 ;; Find any buffer for a file which has same truename.
660 (other (and (not buf)
661 (if (fboundp 'find-buffer-visiting)
662 (find-buffer-visiting filename)
663 (get-file-buffer filename))))
665 ;; Let user know if there is a buffer with the same truename.
669 (string-equal filename (buffer-file-name other))
670 (message "%s and %s are the same file"
671 filename (buffer-file-name other)))
672 ;; Optionally also find that buffer.
673 (if (or (and (boundp 'find-file-existing-other-name)
674 find-file-existing-other-name)
675 find-file-visit-truename)
679 (verify-visited-file-modtime buf)
680 (cond ((not (file-exists-p filename))
681 (error "File %s no longer exists!" filename))
683 (if (string= (file-name-nondirectory filename)
686 (if (buffer-modified-p buf)
687 "File %s changed on disk. Discard your edits? "
688 "File %s changed on disk. Reread from disk? ")
689 (file-name-nondirectory filename))
691 (if (buffer-modified-p buf)
692 "File %s changed on disk. Discard your edits in %s? "
693 "File %s changed on disk. Reread from disk into %s? ")
694 (file-name-nondirectory filename)
698 (revert-buffer t t)))))
700 ;;; The truename stuff makes this obsolete.
701 ;;; (let* ((link-name (car (file-attributes filename)))
702 ;;; (linked-buf (and (stringp link-name)
703 ;;; (get-file-buffer link-name))))
704 ;;; (if (bufferp linked-buf)
705 ;;; (message "Symbolic link to file in buffer %s"
706 ;;; (buffer-name linked-buf))))
707 (setq buf (create-file-buffer filename))
708 ;; (set-buffer-major-mode buf)
713 (insert-file-contents-literally filename t)
715 ;; Unconditionally set error
718 (insert-file-contents filename t)
720 ;; Run find-file-not-found-hooks until one returns non-nil.
721 (or t ; (run-hook-with-args-until-success 'find-file-not-found-hooks)
722 ;; If they fail too, set error.
724 ;; Find the file's truename, and maybe use that as visited name.
725 (setq buffer-file-truename truename)
726 (setq buffer-file-number number)
727 ;; On VMS, we may want to remember which directory in a search list
728 ;; the file was found in.
729 (and (eq system-type 'vax-vms)
731 (if (string-match ":" (file-name-directory filename))
732 (setq logical (substring (file-name-directory filename)
733 0 (match-beginning 0))))
734 (not (member logical find-file-not-true-dirname-list)))
735 (setq buffer-file-name buffer-file-truename))
736 (if find-file-visit-truename
737 (setq buffer-file-name
739 (expand-file-name buffer-file-truename))))
740 ;; Set buffer's default directory to that of the file.
741 (setq default-directory (file-name-directory filename))
742 ;; Turn off backup files for certain file names. Since
743 ;; this is a permanent local, the major mode won't eliminate it.
744 (and (not (funcall backup-enable-predicate buffer-file-name))
746 (make-local-variable 'backup-inhibited)
747 (setq backup-inhibited t)))
750 (after-find-file error (not nowarn)))))
753 (defun gnus-xmas-mail-strip-quoted-names (address)
754 "Protect mail-strip-quoted-names from NIL input.
755 XEmacs compatibility workaround."
758 (mail-strip-quoted-names address)))
760 ;;; gnus-xmas.el ends here