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6343ed61 RS |
1 | ;;; desktop.el --- save partial status of Emacs when killed |
2 | ||
291e3b68 GM |
3 | ;; Copyright (C) 1993, 1994, 1995, 1997, 2000, 2001 |
4 | ;; Free Software Foundation, Inc. | |
6343ed61 RS |
5 | |
6 | ;; Author: Morten Welinder <terra@diku.dk> | |
16906a65 | 7 | ;; Maintainter: Lars Hansen <larsh@math.ku.dk> |
3ea96cac | 8 | ;; Keywords: convenience |
b6105c76 | 9 | ;; Favourite-brand-of-beer: None, I hate beer. |
6343ed61 RS |
10 | |
11 | ;; This file is part of GNU Emacs. | |
12 | ||
13 | ;; GNU Emacs is free software; you can redistribute it and/or modify | |
14 | ;; it under the terms of the GNU General Public License as published by | |
15 | ;; the Free Software Foundation; either version 2, or (at your option) | |
16 | ;; any later version. | |
17 | ||
18 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
19 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
20 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
21 | ;; GNU General Public License for more details. | |
22 | ||
23 | ;; You should have received a copy of the GNU General Public License | |
b578f267 EN |
24 | ;; along with GNU Emacs; see the file COPYING. If not, write to the |
25 | ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
26 | ;; Boston, MA 02111-1307, USA. | |
6343ed61 RS |
27 | |
28 | ;;; Commentary: | |
29 | ||
0b9bd504 RS |
30 | ;; Save the Desktop, i.e., |
31 | ;; - some global variables | |
32 | ;; - the list of buffers with associated files. For each buffer also | |
33 | ;; - the major mode | |
34 | ;; - the default directory | |
35 | ;; - the point | |
36 | ;; - the mark & mark-active | |
37 | ;; - buffer-read-only | |
ec4c6f22 | 38 | ;; - some local variables |
6343ed61 | 39 | |
6b61353c KH |
40 | ;; To use this, use customize to turn on desktop-save-mode or add the |
41 | ;; following line somewhere in your .emacs file: | |
0b9bd504 | 42 | ;; |
6b61353c | 43 | ;; (desktop-save-mode 1) |
0b9bd504 | 44 | ;; |
6b61353c KH |
45 | ;; For further usage information, look at the section |
46 | ;; "Saving Emacs Sessions" in the GNU Emacs Manual. | |
47 | ||
48 | ;; When the desktop module is loaded, the function `desktop-kill' is | |
49 | ;; added to the `kill-emacs-hook'. This function is responsible for | |
50 | ;; saving the desktop when Emacs is killed. Furthermore an anonymous | |
51 | ;; function is added to the `after-init-hook'. This function is | |
52 | ;; responsible for loading the desktop when Emacs is started. | |
ec4c6f22 | 53 | |
47640244 GM |
54 | ;; Some words on minor modes: Most minor modes are controlled by |
55 | ;; buffer-local variables, which have a standard save / restore | |
56 | ;; mechanism. To handle all minor modes, we take the following | |
57 | ;; approach: (1) check whether the variable name from | |
58 | ;; `minor-mode-alist' is also a function; and (2) use translation | |
59 | ;; table `desktop-minor-mode-table' in the case where the two names | |
60 | ;; are not the same. | |
61 | ||
ec4c6f22 RS |
62 | ;; By the way: don't use desktop.el to customize Emacs -- the file .emacs |
63 | ;; in your home directory is used for that. Saving global default values | |
64 | ;; for buffers is an example of misuse. | |
65 | ||
0b9bd504 RS |
66 | ;; PLEASE NOTE: The kill ring can be saved as specified by the variable |
67 | ;; `desktop-globals-to-save' (by default it isn't). This may result in saving | |
68 | ;; things you did not mean to keep. Use M-x desktop-clear RET. | |
ec4c6f22 | 69 | |
fa379636 KH |
70 | ;; Thanks to hetrick@phys.uva.nl (Jim Hetrick) for useful ideas. |
71 | ;; avk@rtsg.mot.com (Andrew V. Klein) for a dired tip. | |
72 | ;; chris@tecc.co.uk (Chris Boucher) for a mark tip. | |
73 | ;; f89-kam@nada.kth.se (Klas Mellbourn) for a mh-e tip. | |
74 | ;; kifer@sbkifer.cs.sunysb.edu (M. Kifer) for a bug hunt. | |
f4c73d07 | 75 | ;; treese@lcs.mit.edu (Win Treese) for ange-ftp tips. |
253406b9 | 76 | ;; pot@cnuce.cnr.it (Francesco Potorti`) for misc. tips. |
0b9bd504 RS |
77 | ;; --------------------------------------------------------------------------- |
78 | ;; TODO: | |
79 | ;; | |
80 | ;; Save window configuration. | |
81 | ;; Recognize more minor modes. | |
82 | ;; Save mark rings. | |
6343ed61 RS |
83 | |
84 | ;;; Code: | |
85 | ||
ec4c6f22 RS |
86 | ;; Make the compilation more silent |
87 | (eval-when-compile | |
88 | ;; We use functions from these modules | |
fa379636 KH |
89 | ;; We can't (require 'mh-e) since that wants to load something. |
90 | (mapcar 'require '(info dired reporter))) | |
4a2fce7a RS |
91 | |
92 | (defvar desktop-file-version "206" | |
6b61353c | 93 | "Version number of desktop file format. |
4a2fce7a RS |
94 | Written into the desktop file and used at desktop read to provide |
95 | backward compatibility.") | |
96 | ||
ec4c6f22 | 97 | ;; ---------------------------------------------------------------------------- |
0b9bd504 RS |
98 | ;; USER OPTIONS -- settings you might want to play with. |
99 | ;; ---------------------------------------------------------------------------- | |
bbf5eb28 RS |
100 | |
101 | (defgroup desktop nil | |
102 | "Save status of Emacs when you exit." | |
103 | :group 'frames) | |
104 | ||
6b61353c KH |
105 | ;;;###autoload |
106 | (define-minor-mode desktop-save-mode | |
107 | "Toggle desktop saving mode. | |
108 | With numeric ARG, turn desktop saving on if ARG is positive, off | |
109 | otherwise. See variable `desktop-save' for a description of when the | |
110 | desktop is saved." | |
111 | :global t | |
112 | :group 'desktop) | |
113 | ||
114 | ;; Maintained for backward compatibility | |
115 | (defvaralias 'desktop-enable 'desktop-save-mode) | |
116 | (make-obsolete-variable 'desktop-enable 'desktop-save-mode) | |
813dbb2d | 117 | |
4a2fce7a | 118 | (defcustom desktop-save 'ask-if-new |
6b61353c KH |
119 | "*Specifies whether the desktop should be saved when it is killed. |
120 | A desktop is killed when the user changes desktop or quits Emacs. | |
121 | Possible values are: | |
4a2fce7a RS |
122 | t -- always save. |
123 | ask -- always ask. | |
124 | ask-if-new -- ask if no desktop file exists, otherwise just save. | |
125 | ask-if-exists -- ask if desktop file exists, otherwise don't save. | |
126 | if-exists -- save if desktop file exists, otherwise don't save. | |
127 | nil -- never save. | |
6b61353c KH |
128 | The desktop is never saved when `desktop-save-mode' is nil. |
129 | The variables `desktop-directory' and `desktop-base-file-name' | |
130 | determine where the desktop is saved." | |
4a2fce7a RS |
131 | :type '(choice |
132 | (const :tag "Always save" t) | |
133 | (const :tag "Always ask" ask) | |
134 | (const :tag "Ask if desktop file is new, else do save" ask-if-new) | |
135 | (const :tag "Ask if desktop file exists, else don't save" ask-if-exists) | |
136 | (const :tag "Save if desktop file exists, else don't" if-exists) | |
137 | (const :tag "Never save" nil)) | |
138 | :group 'desktop) | |
139 | ||
140 | (defcustom desktop-base-file-name | |
fc715501 | 141 | (convert-standard-filename ".emacs.desktop") |
6b61353c | 142 | "Name of file for Emacs desktop, excluding the directory part." |
813dbb2d RS |
143 | :type 'file |
144 | :group 'desktop) | |
7065d42f | 145 | (defvaralias 'desktop-basefilename 'desktop-base-file-name) |
6343ed61 | 146 | |
4a2fce7a RS |
147 | (defcustom desktop-path '("." "~") |
148 | "List of directories to search for the desktop file. | |
149 | The base name of the file is specified in `desktop-base-file-name'." | |
150 | :type '(repeat directory) | |
151 | :group 'desktop) | |
152 | ||
bbf5eb28 | 153 | (defcustom desktop-missing-file-warning nil |
6b61353c | 154 | "*If non-nil then `desktop-read' warns when a file no longer exists. |
bbf5eb28 RS |
155 | Otherwise it simply ignores that file." |
156 | :type 'boolean | |
157 | :group 'desktop) | |
6343ed61 | 158 | |
4a2fce7a | 159 | (defcustom desktop-no-desktop-file-hook nil |
6b61353c | 160 | "Normal hook run when `desktop-read' can't find a desktop file. |
4a2fce7a RS |
161 | May e.g. be used to show a dired buffer." |
162 | :type 'hook | |
163 | :group 'desktop) | |
164 | ||
165 | (defcustom desktop-after-read-hook nil | |
6b61353c | 166 | "Normal hook run after a successful `desktop-read'. |
4a2fce7a RS |
167 | May e.g. be used to show a buffer list." |
168 | :type 'hook | |
169 | :group 'desktop) | |
170 | ||
171 | (defcustom desktop-save-hook nil | |
6b61353c | 172 | "Normal hook run before the desktop is saved in a desktop file. |
4a2fce7a RS |
173 | This is useful for truncating history lists, for example." |
174 | :type 'hook | |
175 | :group 'desktop) | |
176 | ||
177 | (defcustom desktop-globals-to-save '( | |
178 | desktop-missing-file-warning | |
179 | tags-file-name | |
180 | tags-table-list | |
181 | search-ring | |
182 | regexp-search-ring | |
183 | register-alist) | |
6b61353c KH |
184 | "List of global variables saved by `desktop-save'. |
185 | An element may be variable name (a symbol) or a cons cell of the form | |
186 | \(VAR . MAX-SIZE), which means to truncate VAR's value to at most | |
187 | MAX-SIZE elements (if the value is a list) before saving the value. | |
4a2fce7a RS |
188 | Feature: Saving `kill-ring' implies saving `kill-ring-yank-pointer'." |
189 | :type '(repeat (restricted-sexp :match-alternatives (symbolp consp))) | |
190 | :group 'desktop) | |
191 | ||
192 | (defcustom desktop-globals-to-clear '( | |
193 | kill-ring | |
194 | kill-ring-yank-pointer | |
195 | search-ring | |
196 | search-ring-yank-pointer | |
197 | regexp-search-ring | |
198 | regexp-search-ring-yank-pointer) | |
6b61353c | 199 | "List of global variables to clear by `desktop-clear'. |
4a2fce7a RS |
200 | An element may be variable name (a symbol) or a cons cell of the form |
201 | \(VAR . FORM). Symbols are set to nil and for cons cells VAR is set | |
202 | to the value obtained by evaluateing FORM." | |
203 | :type '(repeat (restricted-sexp :match-alternatives (symbolp consp))) | |
204 | :group 'desktop) | |
205 | ||
206 | (defcustom desktop-clear-preserve-buffers-regexp | |
6b61353c | 207 | "^\\(\\*scratch\\*\\|\\*Messages\\*\\|\\*tramp/.+\\*\\)$" |
4a2fce7a RS |
208 | "Regexp identifying buffers that `desktop-clear' should not delete." |
209 | :type 'regexp | |
210 | :group 'desktop) | |
211 | ||
212 | ;; Maintained for backward compatibility | |
6b61353c KH |
213 | (defcustom desktop-clear-preserve-buffers nil |
214 | "*List of buffer names that `desktop-clear' should not delete. | |
215 | This variable is maintained for backward compatibility only." | |
4a2fce7a RS |
216 | :type '(repeat string) |
217 | :group 'desktop) | |
6b61353c KH |
218 | (make-obsolete-variable 'desktop-clear-preserve-buffers |
219 | 'desktop-clear-preserve-buffers-regexp) | |
4a2fce7a | 220 | |
6b61353c | 221 | (defcustom desktop-locals-to-save '( |
4a2fce7a RS |
222 | desktop-locals-to-save ; Itself! Think it over. |
223 | truncate-lines | |
224 | case-fold-search | |
225 | case-replace | |
226 | fill-column | |
227 | overwrite-mode | |
228 | change-log-default-name | |
6b61353c KH |
229 | line-number-mode |
230 | buffer-file-coding-system) | |
577ed2b2 | 231 | "List of local variables to save for each buffer. |
6b61353c KH |
232 | The variables are saved only when they really are local." |
233 | :type '(repeat symbol) | |
234 | :group 'desktop) | |
de9e2828 | 235 | (make-variable-buffer-local 'desktop-locals-to-save) |
ec4c6f22 | 236 | |
0b9bd504 | 237 | ;; We skip .log files because they are normally temporary. |
a7acbbe4 | 238 | ;; (ftp) files because they require passwords and whatnot. |
0b9bd504 | 239 | ;; TAGS files to save time (tags-file-name is saved instead). |
bbf5eb28 | 240 | (defcustom desktop-buffers-not-to-save |
4a2fce7a RS |
241 | "\\(^nn\\.a[0-9]+\\|\\.log\\|(ftp)\\|^tags\\|^TAGS\\)$" |
242 | "Regexp identifying buffers that are to be excluded from saving." | |
243 | :type 'regexp | |
244 | :group 'desktop) | |
6343ed61 | 245 | |
6b61353c | 246 | ;; Skip tramp and ange-ftp files |
bbf5eb28 | 247 | (defcustom desktop-files-not-to-save |
fa379636 | 248 | "^/[^/:]*:" |
bbf5eb28 RS |
249 | "Regexp identifying files whose buffers are to be excluded from saving." |
250 | :type 'regexp | |
251 | :group 'desktop) | |
fa379636 | 252 | |
b6b70cda JW |
253 | (defcustom desktop-buffer-modes-to-save |
254 | '(Info-mode rmail-mode) | |
6b61353c | 255 | "If a buffer is of one of these major modes, save the buffer state. |
b6b70cda JW |
256 | It is up to the functions in `desktop-buffer-handlers' to decide |
257 | whether the buffer should be recreated or not, and how." | |
258 | :type '(repeat symbol) | |
259 | :group 'desktop) | |
260 | ||
80f9f3db SM |
261 | (defcustom desktop-modes-not-to-save nil |
262 | "List of major modes whose buffers should not be saved." | |
263 | :type '(repeat symbol) | |
264 | :group 'desktop) | |
265 | ||
4a2fce7a RS |
266 | (defcustom desktop-file-name-format 'absolute |
267 | "*Format in which desktop file names should be saved. | |
268 | Possible values are: | |
269 | absolute -- Absolute file name. | |
270 | tilde -- Relative to ~. | |
271 | local -- Relative to directory of desktop file." | |
272 | :type '(choice (const absolute) (const tilde) (const local)) | |
bbf5eb28 | 273 | :group 'desktop) |
569c754e | 274 | |
b6b70cda JW |
275 | (defcustom desktop-buffer-misc-functions |
276 | '(desktop-buffer-info-misc-data | |
277 | desktop-buffer-dired-misc-data) | |
278 | "*Functions used to determine auxiliary information for a buffer. | |
6b61353c KH |
279 | These functions are called by `desktop-save' in order, with no |
280 | arguments. If a function returns non-nil, its value is saved along | |
281 | with the state of the buffer for which it was called; no further | |
282 | functions will be called. | |
b6b70cda | 283 | |
6b61353c | 284 | When file names are returned, they should be formatted using the call |
4a2fce7a RS |
285 | \"(desktop-file-name FILE-NAME dirname)\". |
286 | ||
6b61353c KH |
287 | Later, when `desktop-read' restores buffers, each of the functions in |
288 | `desktop-buffer-handlers' will have access to a buffer local variable, | |
289 | named `desktop-buffer-misc', whose value is what the function in | |
290 | `desktop-buffer-misc-functions' returned." | |
b6b70cda JW |
291 | :type '(repeat function) |
292 | :group 'desktop) | |
293 | ||
bbf5eb28 | 294 | (defcustom desktop-buffer-handlers |
0b9bd504 | 295 | '(desktop-buffer-dired |
6343ed61 | 296 | desktop-buffer-rmail |
ec4c6f22 | 297 | desktop-buffer-mh |
6343ed61 RS |
298 | desktop-buffer-info |
299 | desktop-buffer-file) | |
6b61353c | 300 | "*Functions called by `desktop-read' in order to create a buffer. |
569c754e | 301 | The functions are called without explicit parameters but can use the |
4a2fce7a RS |
302 | following variables: |
303 | ||
304 | desktop-file-version | |
305 | desktop-buffer-file-name | |
306 | desktop-buffer-name | |
307 | desktop-buffer-major-mode | |
308 | desktop-buffer-minor-modes | |
309 | desktop-buffer-point | |
310 | desktop-buffer-mark | |
311 | desktop-buffer-read-only | |
312 | desktop-buffer-misc | |
313 | desktop-buffer-locals | |
314 | ||
569c754e | 315 | If one function returns non-nil, no further functions are called. |
0a8c8225 RS |
316 | If the function returns a buffer, then the saved mode settings |
317 | and variable values for that buffer are copied into it." | |
bbf5eb28 RS |
318 | :type '(repeat function) |
319 | :group 'desktop) | |
ec4c6f22 | 320 | |
b6b70cda JW |
321 | (put 'desktop-buffer-handlers 'risky-local-variable t) |
322 | ||
47640244 GM |
323 | (defcustom desktop-minor-mode-table |
324 | '((auto-fill-function auto-fill-mode) | |
325 | (vc-mode nil)) | |
326 | "Table mapping minor mode variables to minor mode functions. | |
327 | Each entry has the form (NAME RESTORE-FUNCTION). | |
328 | NAME is the name of the buffer-local variable indicating that the minor | |
329 | mode is active. RESTORE-FUNCTION is the function to activate the minor mode. | |
330 | called. RESTORE-FUNCTION nil means don't try to restore the minor mode. | |
331 | Only minor modes for which the name of the buffer-local variable | |
332 | and the name of the minor mode function are different have to added to | |
333 | this table." | |
334 | :type 'sexp | |
335 | :group 'desktop) | |
336 | ||
0b9bd504 RS |
337 | ;; ---------------------------------------------------------------------------- |
338 | (defvar desktop-dirname nil | |
6b61353c | 339 | "The directory in which the desktop file should be saved.") |
6343ed61 RS |
340 | |
341 | (defconst desktop-header | |
0b9bd504 RS |
342 | ";; -------------------------------------------------------------------------- |
343 | ;; Desktop File for Emacs | |
344 | ;; -------------------------------------------------------------------------- | |
6343ed61 | 345 | " "*Header to place in Desktop file.") |
de9e2828 RS |
346 | |
347 | (defvar desktop-delay-hook nil | |
348 | "Hooks run after all buffers are loaded; intended for internal use.") | |
813dbb2d | 349 | |
0b9bd504 | 350 | ;; ---------------------------------------------------------------------------- |
6b61353c | 351 | (defun desktop-truncate (list n) |
ec4c6f22 | 352 | "Truncate LIST to at most N elements destructively." |
6b61353c | 353 | (let ((here (nthcdr (1- n) list))) |
ec4c6f22 | 354 | (if (consp here) |
de9e2828 | 355 | (setcdr here nil)))) |
f9be4574 | 356 | |
4a2fce7a | 357 | ;; ---------------------------------------------------------------------------- |
f9be4574 RS |
358 | (defun desktop-clear () |
359 | "Empty the Desktop. | |
6b61353c KH |
360 | This kills all buffers except for internal ones and those matching |
361 | `desktop-clear-preserve-buffers-regexp' or listed in | |
362 | `desktop-clear-preserve-buffers'. Furthermore, it clears the | |
4a2fce7a | 363 | variables listed in `desktop-globals-to-clear'." |
6343ed61 | 364 | (interactive) |
4a2fce7a RS |
365 | (dolist (var desktop-globals-to-clear) |
366 | (if (symbolp var) | |
367 | (eval `(setq-default ,var nil)) | |
368 | (eval `(setq-default ,(car var) ,(cdr var))))) | |
f9be4574 RS |
369 | (let ((buffers (buffer-list))) |
370 | (while buffers | |
4a2fce7a RS |
371 | (let ((bufname (buffer-name (car buffers)))) |
372 | (or | |
373 | (null bufname) | |
374 | (string-match desktop-clear-preserve-buffers-regexp bufname) | |
375 | (member bufname desktop-clear-preserve-buffers) | |
376 | ;; Don't kill buffers made for internal purposes. | |
377 | (and (not (equal bufname "")) (eq (aref bufname 0) ?\ )) | |
378 | (kill-buffer (car buffers)))) | |
f9be4574 | 379 | (setq buffers (cdr buffers)))) |
b6105c76 | 380 | (delete-other-windows)) |
4a2fce7a | 381 | |
0b9bd504 | 382 | ;; ---------------------------------------------------------------------------- |
de9e2828 | 383 | (add-hook 'kill-emacs-hook 'desktop-kill) |
ec4c6f22 | 384 | |
6343ed61 | 385 | (defun desktop-kill () |
6b61353c | 386 | "If `desktop-save-mode' is non-nil, do what `desktop-save' says to do. |
4a2fce7a RS |
387 | If the desktop should be saved and `desktop-dirname' |
388 | is nil, ask the user where to save the desktop." | |
389 | (when | |
390 | (and | |
6b61353c | 391 | desktop-save-mode |
73b0b745 | 392 | (let ((exists (file-exists-p (expand-file-name desktop-base-file-name desktop-dirname)))) |
4a2fce7a | 393 | (or |
6b61353c | 394 | (eq desktop-save t) |
4a2fce7a RS |
395 | (and exists (memq desktop-save '(ask-if-new if-exists))) |
396 | (and | |
397 | (or | |
398 | (memq desktop-save '(ask ask-if-new)) | |
399 | (and exists (eq desktop-save 'ask-if-exists))) | |
400 | (y-or-n-p "Save desktop? "))))) | |
401 | (unless desktop-dirname | |
402 | (setq desktop-dirname | |
73b0b745 JB |
403 | (file-name-as-directory |
404 | (expand-file-name | |
405 | (call-interactively | |
406 | (lambda (dir) (interactive "DDirectory for desktop file: ") dir)))))) | |
4a2fce7a RS |
407 | (condition-case err |
408 | (desktop-save desktop-dirname) | |
409 | (file-error | |
410 | (unless (yes-or-no-p "Error while saving the desktop. Ignore? ") | |
411 | (signal (car err) (cdr err))))))) | |
412 | ||
0b9bd504 | 413 | ;; ---------------------------------------------------------------------------- |
ed2f7fc8 RS |
414 | (defun desktop-list* (&rest args) |
415 | (if (null (cdr args)) | |
416 | (car args) | |
417 | (setq args (nreverse args)) | |
418 | (let ((value (cons (nth 1 args) (car args)))) | |
419 | (setq args (cdr (cdr args))) | |
420 | (while args | |
421 | (setq value (cons (car args) value)) | |
422 | (setq args (cdr args))) | |
423 | value))) | |
424 | ||
4a2fce7a | 425 | ;; ---------------------------------------------------------------------------- |
6b61353c | 426 | (defun desktop-internal-v2s (value) |
577ed2b2 RS |
427 | "Convert VALUE to a pair (QUOTE . TXT); (eval (read TXT)) gives VALUE. |
428 | TXT is a string that when read and evaluated yields value. | |
429 | QUOTE may be `may' (value may be quoted), | |
430 | `must' (values must be quoted), or nil (value may not be quoted)." | |
de9e2828 | 431 | (cond |
6b61353c KH |
432 | ((or (numberp value) (null value) (eq t value)) |
433 | (cons 'may (prin1-to-string value))) | |
434 | ((stringp value) | |
435 | (let ((copy (copy-sequence value))) | |
95bf6435 RS |
436 | (set-text-properties 0 (length copy) nil copy) |
437 | ;; Get rid of text properties because we cannot read them | |
438 | (cons 'may (prin1-to-string copy)))) | |
6b61353c KH |
439 | ((symbolp value) |
440 | (cons 'must (prin1-to-string value))) | |
441 | ((vectorp value) | |
de9e2828 RS |
442 | (let* ((special nil) |
443 | (pass1 (mapcar | |
444 | (lambda (el) | |
445 | (let ((res (desktop-internal-v2s el))) | |
446 | (if (null (car res)) | |
447 | (setq special t)) | |
448 | res)) | |
6b61353c | 449 | value))) |
de9e2828 RS |
450 | (if special |
451 | (cons nil (concat "(vector " | |
452 | (mapconcat (lambda (el) | |
453 | (if (eq (car el) 'must) | |
454 | (concat "'" (cdr el)) | |
455 | (cdr el))) | |
456 | pass1 | |
457 | " ") | |
458 | ")")) | |
459 | (cons 'may (concat "[" (mapconcat 'cdr pass1 " ") "]"))))) | |
6b61353c KH |
460 | ((consp value) |
461 | (let ((p value) | |
b4929f75 | 462 | newlist |
ed2f7fc8 | 463 | use-list* |
b4929f75 RS |
464 | anynil) |
465 | (while (consp p) | |
466 | (let ((q.txt (desktop-internal-v2s (car p)))) | |
467 | (or anynil (setq anynil (null (car q.txt)))) | |
468 | (setq newlist (cons q.txt newlist))) | |
469 | (setq p (cdr p))) | |
470 | (if p | |
471 | (let ((last (desktop-internal-v2s p)) | |
472 | (el (car newlist))) | |
ed2f7fc8 RS |
473 | (or anynil (setq anynil (null (car last)))) |
474 | (or anynil | |
475 | (setq newlist (cons '(must . ".") newlist))) | |
476 | (setq use-list* t) | |
477 | (setq newlist (cons last newlist)))) | |
b4929f75 RS |
478 | (setq newlist (nreverse newlist)) |
479 | (if anynil | |
480 | (cons nil | |
ed2f7fc8 | 481 | (concat (if use-list* "(desktop-list* " "(list ") |
b4929f75 RS |
482 | (mapconcat (lambda (el) |
483 | (if (eq (car el) 'must) | |
484 | (concat "'" (cdr el)) | |
485 | (cdr el))) | |
486 | newlist | |
487 | " ") | |
488 | ")")) | |
489 | (cons 'must | |
490 | (concat "(" (mapconcat 'cdr newlist " ") ")"))))) | |
6b61353c | 491 | ((subrp value) |
de9e2828 | 492 | (cons nil (concat "(symbol-function '" |
6b61353c | 493 | (substring (prin1-to-string value) 7 -1) |
de9e2828 | 494 | ")"))) |
6b61353c KH |
495 | ((markerp value) |
496 | (let ((pos (prin1-to-string (marker-position value))) | |
497 | (buf (prin1-to-string (buffer-name (marker-buffer value))))) | |
de9e2828 RS |
498 | (cons nil (concat "(let ((mk (make-marker)))" |
499 | " (add-hook 'desktop-delay-hook" | |
500 | " (list 'lambda '() (list 'set-marker mk " | |
501 | pos " (get-buffer " buf ")))) mk)")))) | |
502 | (t ; save as text | |
fa379636 | 503 | (cons 'may "\"Unprintable entity\"")))) |
de9e2828 | 504 | |
4a2fce7a | 505 | ;; ---------------------------------------------------------------------------- |
6b61353c | 506 | (defun desktop-value-to-string (value) |
577ed2b2 RS |
507 | "Convert VALUE to a string that when read evaluates to the same value. |
508 | Not all types of values are supported." | |
de9e2828 RS |
509 | (let* ((print-escape-newlines t) |
510 | (float-output-format nil) | |
6b61353c | 511 | (quote.txt (desktop-internal-v2s value)) |
de9e2828 RS |
512 | (quote (car quote.txt)) |
513 | (txt (cdr quote.txt))) | |
514 | (if (eq quote 'must) | |
515 | (concat "'" txt) | |
516 | txt))) | |
4a2fce7a | 517 | |
ec4c6f22 | 518 | ;; ---------------------------------------------------------------------------- |
0e7c8611 RS |
519 | (defun desktop-outvar (varspec) |
520 | "Output a setq statement for variable VAR to the desktop file. | |
521 | The argument VARSPEC may be the variable name VAR (a symbol), | |
522 | or a cons cell of the form (VAR . MAX-SIZE), | |
523 | which means to truncate VAR's value to at most MAX-SIZE elements | |
524 | \(if the value is a list) before saving the value." | |
525 | (let (var size) | |
526 | (if (consp varspec) | |
527 | (setq var (car varspec) size (cdr varspec)) | |
528 | (setq var varspec)) | |
529 | (if (boundp var) | |
530 | (progn | |
531 | (if (and (integerp size) | |
532 | (> size 0) | |
533 | (listp (eval var))) | |
47640244 | 534 | (desktop-truncate (eval var) size)) |
0e7c8611 RS |
535 | (insert "(setq " |
536 | (symbol-name var) | |
537 | " " | |
538 | (desktop-value-to-string (symbol-value var)) | |
539 | ")\n"))))) | |
4a2fce7a | 540 | |
0b9bd504 | 541 | ;; ---------------------------------------------------------------------------- |
ec4c6f22 | 542 | (defun desktop-save-buffer-p (filename bufname mode &rest dummy) |
b6105c76 | 543 | "Return t if the desktop should record a particular buffer for next startup. |
0b9bd504 | 544 | FILENAME is the visited file name, BUFNAME is the buffer name, and |
6343ed61 | 545 | MODE is the major mode." |
fa379636 | 546 | (let ((case-fold-search nil)) |
80f9f3db SM |
547 | (and (not (string-match desktop-buffers-not-to-save bufname)) |
548 | (not (memq mode desktop-modes-not-to-save)) | |
549 | (or (and filename | |
550 | (not (string-match desktop-files-not-to-save filename))) | |
551 | (and (eq mode 'dired-mode) | |
552 | (save-excursion | |
553 | (set-buffer (get-buffer bufname)) | |
554 | (not (string-match desktop-files-not-to-save | |
555 | default-directory)))) | |
556 | (and (null filename) | |
b6b70cda | 557 | (memq mode desktop-buffer-modes-to-save)))))) |
4a2fce7a | 558 | |
0b9bd504 | 559 | ;; ---------------------------------------------------------------------------- |
4a2fce7a RS |
560 | (defun desktop-file-name (filename dirname) |
561 | "Convert FILENAME to format specified in `desktop-file-name-format'. | |
562 | DIRNAME must be the directory in which the desktop file will be saved." | |
563 | (cond | |
564 | ((not filename) nil) | |
565 | ((eq desktop-file-name-format 'tilde) | |
566 | (let ((relative-name (file-relative-name (expand-file-name filename) "~"))) | |
567 | (cond | |
568 | ((file-name-absolute-p relative-name) relative-name) | |
569 | ((string= "./" relative-name) "~/") | |
570 | ((string= "." relative-name) "~") | |
571 | (t (concat "~/" relative-name))))) | |
572 | ((eq desktop-file-name-format 'local) (file-relative-name filename dirname)) | |
573 | (t (expand-file-name filename)))) | |
e5714620 | 574 | |
4a2fce7a | 575 | ;; ---------------------------------------------------------------------------- |
6343ed61 | 576 | (defun desktop-save (dirname) |
6b61353c KH |
577 | "Save the desktop in a desktop file. |
578 | Parameter DIRNAME specifies where to save the desktop file. | |
579 | See also `desktop-base-file-name'." | |
6343ed61 | 580 | (interactive "DDirectory to save desktop file in: ") |
fa379636 | 581 | (run-hooks 'desktop-save-hook) |
7bcbf3c2 | 582 | (setq dirname (file-name-as-directory (expand-file-name dirname))) |
6343ed61 | 583 | (save-excursion |
73b0b745 | 584 | (let ((filename (expand-file-name desktop-base-file-name dirname)) |
7bcbf3c2 JB |
585 | (info |
586 | (mapcar | |
587 | (function | |
588 | (lambda (b) | |
589 | (set-buffer b) | |
590 | (list | |
591 | (desktop-file-name (buffer-file-name) dirname) | |
592 | (buffer-name) | |
593 | major-mode | |
594 | ;; minor modes | |
595 | (let (ret) | |
596 | (mapcar | |
597 | #'(lambda (mim) | |
598 | (and | |
599 | (boundp mim) | |
600 | (symbol-value mim) | |
601 | (setq ret | |
602 | (cons | |
603 | (let ((special (assq mim desktop-minor-mode-table))) | |
604 | (if special (cadr special) mim)) | |
605 | ret)))) | |
606 | (mapcar #'car minor-mode-alist)) | |
607 | ret) | |
608 | (point) | |
609 | (list (mark t) mark-active) | |
610 | buffer-read-only | |
611 | (run-hook-with-args-until-success 'desktop-buffer-misc-functions) | |
612 | (let ((locals desktop-locals-to-save) | |
613 | (loclist (buffer-local-variables)) | |
614 | (ll)) | |
615 | (while locals | |
616 | (let ((here (assq (car locals) loclist))) | |
617 | (if here | |
618 | (setq ll (cons here ll)) | |
619 | (when (member (car locals) loclist) | |
620 | (setq ll (cons (car locals) ll))))) | |
621 | (setq locals (cdr locals))) | |
622 | ll)))) | |
623 | (buffer-list))) | |
624 | (buf (get-buffer-create "*desktop*"))) | |
6343ed61 RS |
625 | (set-buffer buf) |
626 | (erase-buffer) | |
fa379636 | 627 | |
4a2fce7a | 628 | (insert |
8f924df7 | 629 | ";; -*- coding: utf-8-emacs; -*-\n" |
4a2fce7a RS |
630 | desktop-header |
631 | ";; Created " (current-time-string) "\n" | |
632 | ";; Desktop file format version " desktop-file-version "\n" | |
633 | ";; Emacs version " emacs-version "\n\n" | |
634 | ";; Global section:\n") | |
6343ed61 RS |
635 | (mapcar (function desktop-outvar) desktop-globals-to-save) |
636 | (if (memq 'kill-ring desktop-globals-to-save) | |
4a2fce7a RS |
637 | (insert |
638 | "(setq kill-ring-yank-pointer (nthcdr " | |
639 | (int-to-string (- (length kill-ring) (length kill-ring-yank-pointer))) | |
640 | " kill-ring))\n")) | |
6343ed61 | 641 | |
4a2fce7a | 642 | (insert "\n;; Buffer section -- buffers listed in same order as in buffer list:\n") |
de9e2828 | 643 | (mapcar |
4a2fce7a RS |
644 | (function |
645 | (lambda (l) | |
646 | (if (apply 'desktop-save-buffer-p l) | |
647 | (progn | |
648 | (insert "(desktop-create-buffer " desktop-file-version) | |
649 | (mapcar | |
650 | (function | |
651 | (lambda (e) | |
652 | (insert "\n " (desktop-value-to-string e)))) | |
653 | l) | |
654 | (insert ")\n\n"))))) | |
655 | info) | |
6343ed61 | 656 | (setq default-directory dirname) |
4a2fce7a | 657 | (when (file-exists-p filename) (delete-file filename)) |
eca8bedb | 658 | (let ((coding-system-for-write 'utf-8-emacs)) |
4a2fce7a | 659 | (write-region (point-min) (point-max) filename nil 'nomessage)))) |
6343ed61 | 660 | (setq desktop-dirname dirname)) |
4a2fce7a | 661 | |
0b9bd504 | 662 | ;; ---------------------------------------------------------------------------- |
6343ed61 | 663 | (defun desktop-remove () |
6b61353c KH |
664 | "Delete desktop file in `desktop-dirname'. |
665 | This function also sets `desktop-dirname' to nil." | |
6343ed61 | 666 | (interactive) |
6b61353c KH |
667 | (when desktop-dirname |
668 | (let ((filename (expand-file-name desktop-base-file-name desktop-dirname))) | |
669 | (setq desktop-dirname nil) | |
670 | (when (file-exists-p filename) | |
73b0b745 | 671 | (delete-file filename))))) |
6b61353c | 672 | |
0b9bd504 | 673 | ;; ---------------------------------------------------------------------------- |
478653c9 | 674 | ;;;###autoload |
6b61353c KH |
675 | (defun desktop-read (&optional dirname) |
676 | "Read and process the desktop file in directory DIRNAME. | |
677 | Look for a desktop file in DIRNAME, or if DIRNAME is omitted, look in | |
678 | directories listed in `desktop-path'. If a desktop file is found, it | |
679 | is processed and `desktop-after-read-hook' is run. If no desktop file | |
680 | is found, clear the desktop and run `desktop-no-desktop-file-hook'. | |
681 | This function is a no-op when Emacs is running in batch mode. | |
682 | It returns t if a desktop file was loaded, nil otherwise." | |
6343ed61 | 683 | (interactive) |
4a2fce7a | 684 | (unless noninteractive |
6b61353c KH |
685 | (setq desktop-dirname |
686 | (file-name-as-directory | |
687 | (expand-file-name | |
688 | (or | |
689 | ;; If DIRNAME is specified, use it. | |
690 | (and (< 0 (length dirname)) dirname) | |
691 | ;; Otherwise search desktop file in desktop-path. | |
692 | (let ((dirs desktop-path)) | |
693 | (while | |
694 | (and | |
695 | dirs | |
696 | (not | |
697 | (file-exists-p (expand-file-name desktop-base-file-name (car dirs))))) | |
698 | (setq dirs (cdr dirs))) | |
699 | (and dirs (car dirs))) | |
700 | ;; If not found and `desktop-path' is non-nil, use its first element. | |
701 | (and desktop-path (car desktop-path)) | |
702 | ;; Default: Home directory. | |
703 | "~")))) | |
704 | (if (file-exists-p (expand-file-name desktop-base-file-name desktop-dirname)) | |
705 | ;; Desktop file found, process it. | |
706 | (let ((desktop-first-buffer nil)) | |
707 | ;; Evaluate desktop buffer. | |
708 | (load (expand-file-name desktop-base-file-name desktop-dirname) t t t) | |
709 | ;; `desktop-create-buffer' puts buffers at end of the buffer list. | |
710 | ;; We want buffers existing prior to evaluating the desktop (and not reused) | |
711 | ;; to be placed at the end of the buffer list, so we move them here. | |
712 | (mapcar 'bury-buffer | |
713 | (nreverse (cdr (memq desktop-first-buffer (nreverse (buffer-list)))))) | |
714 | (switch-to-buffer (car (buffer-list))) | |
715 | (run-hooks 'desktop-delay-hook) | |
716 | (setq desktop-delay-hook nil) | |
717 | (run-hooks 'desktop-after-read-hook) | |
718 | (message "Desktop loaded.") | |
719 | t) | |
720 | ;; No desktop file found. | |
721 | (desktop-clear) | |
722 | (let ((default-directory desktop-dirname)) | |
723 | (run-hooks 'desktop-no-desktop-file-hook)) | |
724 | (message "No desktop file.") | |
725 | nil))) | |
4a2fce7a | 726 | |
0b9bd504 | 727 | ;; ---------------------------------------------------------------------------- |
6b61353c | 728 | ;; Maintained for backward compatibility |
478653c9 | 729 | ;;;###autoload |
6343ed61 | 730 | (defun desktop-load-default () |
577ed2b2 | 731 | "Load the `default' start-up library manually. |
6b61353c | 732 | Also inhibit further loading of it." |
0b9bd504 | 733 | (if (not inhibit-default-init) ; safety check |
6343ed61 RS |
734 | (progn |
735 | (load "default" t t) | |
736 | (setq inhibit-default-init t)))) | |
6b61353c | 737 | (make-obsolete 'desktop-load-default 'desktop-save-mode) |
4a2fce7a RS |
738 | |
739 | ;; ---------------------------------------------------------------------------- | |
740 | ;;;###autoload | |
6b61353c KH |
741 | (defun desktop-change-dir (dirname) |
742 | "Change to desktop saved in DIRNAME. | |
743 | Kill the desktop as specified by variables `desktop-save-mode' and | |
744 | `desktop-save', then clear the desktop and load the desktop file in | |
745 | directory DIRNAME." | |
746 | (interactive "DChange to directory: ") | |
747 | (setq dirname (file-name-as-directory (expand-file-name dirname desktop-dirname))) | |
4a2fce7a RS |
748 | (desktop-kill) |
749 | (desktop-clear) | |
6b61353c KH |
750 | (desktop-read dirname)) |
751 | ||
752 | ;; ---------------------------------------------------------------------------- | |
4a2fce7a | 753 | ;;;###autoload |
6b61353c KH |
754 | (defun desktop-save-in-desktop-dir () |
755 | "Save the desktop in directory `desktop-dirname'." | |
4a2fce7a RS |
756 | (interactive) |
757 | (if desktop-dirname | |
758 | (desktop-save desktop-dirname) | |
759 | (call-interactively 'desktop-save)) | |
760 | (message "Desktop saved in %s" desktop-dirname)) | |
761 | ||
762 | ;; ---------------------------------------------------------------------------- | |
763 | ;;;###autoload | |
764 | (defun desktop-revert () | |
765 | "Revert to the last loaded desktop." | |
766 | (interactive) | |
6b61353c KH |
767 | (unless desktop-dirname |
768 | (error "Unknown desktop directory")) | |
769 | (unless (file-exists-p (expand-file-name desktop-base-file-name desktop-dirname)) | |
770 | (error "No desktop file found")) | |
771 | (desktop-clear) | |
772 | (desktop-read desktop-dirname)) | |
4a2fce7a | 773 | |
0b9bd504 RS |
774 | ;; ---------------------------------------------------------------------------- |
775 | ;; Note: the following functions use the dynamic variable binding in Lisp. | |
0b9bd504 | 776 | ;; |
4a2fce7a RS |
777 | |
778 | (eval-when-compile ; Just to silence the byte compiler | |
779 | (defvar desktop-file-version) | |
780 | (defvar desktop-buffer-file-name) | |
781 | (defvar desktop-buffer-name) | |
782 | (defvar desktop-buffer-major-mode) | |
783 | (defvar desktop-buffer-minor-modes) | |
784 | (defvar desktop-buffer-point) | |
785 | (defvar desktop-buffer-mark) | |
786 | (defvar desktop-buffer-read-only) | |
787 | (defvar desktop-buffer-misc) | |
788 | (defvar desktop-buffer-locals) | |
789 | ) | |
790 | ||
b6b70cda JW |
791 | (defun desktop-buffer-info-misc-data () |
792 | (if (eq major-mode 'Info-mode) | |
793 | (list Info-current-file | |
794 | Info-current-node))) | |
795 | ||
4a2fce7a | 796 | ;; ---------------------------------------------------------------------------- |
b6b70cda | 797 | (defun desktop-buffer-dired-misc-data () |
4a2fce7a RS |
798 | (when (eq major-mode 'dired-mode) |
799 | (eval-when-compile (defvar dirname)) | |
800 | (cons | |
df7eb2bd JB |
801 | ;; Value of `dired-directory'. |
802 | (if (consp dired-directory) | |
803 | ;; Directory name followed by list of files. | |
804 | (cons (desktop-file-name (car dired-directory) dirname) (cdr dired-directory)) | |
805 | ;; Directory name, optionally with with shell wildcard. | |
806 | (desktop-file-name dired-directory dirname)) | |
807 | ;; Subdirectories in `dired-subdir-alist'. | |
808 | (cdr | |
809 | (nreverse | |
810 | (mapcar | |
811 | (function (lambda (f) (desktop-file-name (car f) dirname))) | |
812 | dired-subdir-alist)))))) | |
b6b70cda | 813 | |
4a2fce7a | 814 | ;; ---------------------------------------------------------------------------- |
6343ed61 | 815 | (defun desktop-buffer-info () "Load an info file." |
569c754e | 816 | (if (eq 'Info-mode desktop-buffer-major-mode) |
6343ed61 | 817 | (progn |
b6b70cda JW |
818 | (let ((first (nth 0 desktop-buffer-misc)) |
819 | (second (nth 1 desktop-buffer-misc))) | |
820 | (when (and first second) | |
821 | (require 'info) | |
6df8016c RS |
822 | (with-no-warnings |
823 | (Info-find-node first second)) | |
b6b70cda | 824 | (current-buffer)))))) |
4a2fce7a | 825 | |
0b9bd504 | 826 | ;; ---------------------------------------------------------------------------- |
4a2fce7a | 827 | (eval-when-compile (defvar rmail-buffer)) ; Just to silence the byte compiler. |
b6105c76 | 828 | (defun desktop-buffer-rmail () "Load an RMAIL file." |
569c754e | 829 | (if (eq 'rmail-mode desktop-buffer-major-mode) |
e36d00d4 | 830 | (condition-case error |
608b9ed2 RS |
831 | (progn (rmail-input desktop-buffer-file-name) |
832 | (if (eq major-mode 'rmail-mode) | |
833 | (current-buffer) | |
834 | rmail-buffer)) | |
e2247420 RS |
835 | (file-locked |
836 | (kill-buffer (current-buffer)) | |
837 | 'ignored)))) | |
4a2fce7a | 838 | |
0b9bd504 | 839 | ;; ---------------------------------------------------------------------------- |
ec4c6f22 | 840 | (defun desktop-buffer-mh () "Load a folder in the mh system." |
569c754e | 841 | (if (eq 'mh-folder-mode desktop-buffer-major-mode) |
6df8016c | 842 | (with-no-warnings |
ec4c6f22 | 843 | (mh-find-path) |
608b9ed2 RS |
844 | (mh-visit-folder desktop-buffer-name) |
845 | (current-buffer)))) | |
4a2fce7a | 846 | |
ec4c6f22 | 847 | ;; ---------------------------------------------------------------------------- |
6343ed61 | 848 | (defun desktop-buffer-dired () "Load a directory using dired." |
569c754e | 849 | (if (eq 'dired-mode desktop-buffer-major-mode) |
df7eb2bd JB |
850 | ;; First element of `desktop-buffer-misc' is the value of `dired-directory'. |
851 | ;; This value is a directory name, optionally with with shell wildcard or | |
852 | ;; a directory name followed by list of files. | |
6b61353c KH |
853 | (let* ((dired-dir (car desktop-buffer-misc)) |
854 | (dir (if (consp dired-dir) (car dired-dir) dired-dir))) | |
df7eb2bd JB |
855 | (if (file-directory-p (file-name-directory dir)) |
856 | (progn | |
6b61353c KH |
857 | (dired dired-dir) |
858 | ;; The following elements of `desktop-buffer-misc' are the keys | |
859 | ;; from `dired-subdir-alist'. | |
df7eb2bd JB |
860 | (mapcar 'dired-maybe-insert-subdir (cdr desktop-buffer-misc)) |
861 | (current-buffer)) | |
862 | (message "Directory %s no longer exists." dir) | |
863 | (sit-for 1) | |
864 | 'ignored)))) | |
4a2fce7a | 865 | |
0b9bd504 | 866 | ;; ---------------------------------------------------------------------------- |
84b538ec JB |
867 | (defun desktop-buffer-file () |
868 | "Load a file." | |
569c754e RS |
869 | (if desktop-buffer-file-name |
870 | (if (or (file-exists-p desktop-buffer-file-name) | |
6343ed61 | 871 | (and desktop-missing-file-warning |
0b9bd504 RS |
872 | (y-or-n-p (format |
873 | "File \"%s\" no longer exists. Re-create? " | |
569c754e | 874 | desktop-buffer-file-name)))) |
6b61353c KH |
875 | (let* ((auto-insert nil) ; Disable auto insertion |
876 | (coding-system-for-read | |
877 | (or coding-system-for-read | |
878 | (cdr (assq 'buffer-file-coding-system | |
879 | desktop-buffer-locals)))) | |
880 | (buf (find-file-noselect desktop-buffer-file-name))) | |
80f9f3db SM |
881 | (condition-case nil |
882 | (switch-to-buffer buf) | |
0a8c8225 | 883 | (error (pop-to-buffer buf))) |
84b538ec JB |
884 | (and (not (eq major-mode desktop-buffer-major-mode)) |
885 | (functionp desktop-buffer-major-mode) | |
886 | (funcall desktop-buffer-major-mode)) | |
0a8c8225 | 887 | buf) |
6343ed61 | 888 | 'ignored))) |
4a2fce7a | 889 | |
0b9bd504 RS |
890 | ;; ---------------------------------------------------------------------------- |
891 | ;; Create a buffer, load its file, set is mode, ...; called from Desktop file | |
6343ed61 | 892 | ;; only. |
1d500ca6 | 893 | |
4a2fce7a RS |
894 | (eval-when-compile ; Just to silence the byte compiler |
895 | (defvar desktop-first-buffer) ;; Dynamically bound in `desktop-read' | |
896 | ) | |
897 | ||
898 | (defun desktop-create-buffer ( | |
899 | desktop-file-version | |
900 | desktop-buffer-file-name | |
901 | desktop-buffer-name | |
902 | desktop-buffer-major-mode | |
903 | desktop-buffer-minor-modes | |
904 | desktop-buffer-point | |
905 | desktop-buffer-mark | |
906 | desktop-buffer-read-only | |
907 | desktop-buffer-misc | |
908 | &optional | |
909 | desktop-buffer-locals) | |
910 | ;; To make desktop files with relative file names possible, we cannot | |
911 | ;; allow `default-directory' to change. Therefore we save current buffer. | |
912 | (save-current-buffer | |
913 | (let ( | |
914 | (buffer-list (buffer-list)) | |
915 | (hlist desktop-buffer-handlers) | |
916 | (result) | |
917 | (handler) | |
918 | ) | |
919 | ;; Call desktop-buffer-handlers to create buffer. | |
920 | (while (and (not result) hlist) | |
921 | (setq handler (car hlist)) | |
922 | (setq result (funcall handler)) | |
923 | (setq hlist (cdr hlist))) | |
924 | (unless (bufferp result) (setq result nil)) | |
7bcbf3c2 JB |
925 | ;; Restore buffer list order with new buffer at end. Don't change |
926 | ;; the order for old desktop files (old desktop module behaviour). | |
4a2fce7a | 927 | (unless (< desktop-file-version 206) |
7bcbf3c2 JB |
928 | (mapcar 'bury-buffer buffer-list) |
929 | (when result (bury-buffer result))) | |
4a2fce7a | 930 | (when result |
7bcbf3c2 JB |
931 | (unless (or desktop-first-buffer (< desktop-file-version 206)) |
932 | (setq desktop-first-buffer result)) | |
4a2fce7a RS |
933 | (set-buffer result) |
934 | (unless (equal (buffer-name) desktop-buffer-name) | |
935 | (rename-buffer desktop-buffer-name)) | |
936 | ;; minor modes | |
937 | (cond ( | |
938 | ;; backwards compatible | |
939 | (equal '(t) desktop-buffer-minor-modes) | |
940 | (auto-fill-mode 1))( | |
941 | (equal '(nil) desktop-buffer-minor-modes) | |
942 | (auto-fill-mode 0))( | |
943 | t | |
944 | (mapcar | |
945 | #'(lambda (minor-mode) | |
946 | (when (functionp minor-mode) (funcall minor-mode 1))) | |
947 | desktop-buffer-minor-modes))) | |
948 | ;; Even though point and mark are non-nil when written by `desktop-save' | |
73b0b745 | 949 | ;; they may be modified by handlers wanting to set point or mark themselves. |
4a2fce7a RS |
950 | (when desktop-buffer-point (goto-char desktop-buffer-point)) |
951 | (when desktop-buffer-mark | |
952 | (if (consp desktop-buffer-mark) | |
953 | (progn | |
954 | (set-mark (car desktop-buffer-mark)) | |
955 | (setq mark-active (car (cdr desktop-buffer-mark)))) | |
956 | (set-mark desktop-buffer-mark))) | |
957 | ;; Never override file system if the file really is read-only marked. | |
958 | (if desktop-buffer-read-only (setq buffer-read-only desktop-buffer-read-only)) | |
959 | (while desktop-buffer-locals | |
960 | (let ((this (car desktop-buffer-locals))) | |
961 | (if (consp this) | |
962 | ;; an entry of this form `(symbol . value)' | |
963 | (progn | |
964 | (make-local-variable (car this)) | |
965 | (set (car this) (cdr this))) | |
966 | ;; an entry of the form `symbol' | |
967 | (make-local-variable this) | |
968 | (makunbound this))) | |
969 | (setq desktop-buffer-locals (cdr desktop-buffer-locals))))))) | |
ec4c6f22 | 970 | |
4a2fce7a | 971 | ;; ---------------------------------------------------------------------------- |
ec4c6f22 | 972 | ;; Backward compatibility -- update parameters to 205 standards. |
569c754e RS |
973 | (defun desktop-buffer (desktop-buffer-file-name desktop-buffer-name |
974 | desktop-buffer-major-mode | |
2699e23e | 975 | mim pt mk ro tl fc cfs cr desktop-buffer-misc) |
569c754e | 976 | (desktop-create-buffer 205 desktop-buffer-file-name desktop-buffer-name |
2699e23e RS |
977 | desktop-buffer-major-mode (cdr mim) pt mk ro |
978 | desktop-buffer-misc | |
ec4c6f22 RS |
979 | (list (cons 'truncate-lines tl) |
980 | (cons 'fill-column fc) | |
981 | (cons 'case-fold-search cfs) | |
982 | (cons 'case-replace cr) | |
983 | (cons 'overwrite-mode (car mim))))) | |
84b538ec | 984 | |
0b9bd504 | 985 | ;; ---------------------------------------------------------------------------- |
6b61353c | 986 | ;; When `desktop-save-mode' is non-nil and "--no-desktop" is not specified on the |
4a2fce7a RS |
987 | ;; command line, we do the rest of what it takes to use desktop, but do it |
988 | ;; after finishing loading the init file. | |
989 | ;; We cannot use `command-switch-alist' to process "--no-desktop" because these | |
990 | ;; functions are processed after `after-init-hook'. | |
991 | (add-hook | |
992 | 'after-init-hook | |
993 | '(lambda () | |
994 | (let ((key "--no-desktop")) | |
995 | (if (member key command-line-args) | |
996 | (delete key command-line-args) | |
6b61353c | 997 | (when desktop-save-mode (desktop-read)))))) |
813dbb2d | 998 | |
ab1d55ea | 999 | (provide 'desktop) |
6343ed61 | 1000 | |
6b61353c | 1001 | ;;; arch-tag: 221907c3-1771-4fd3-9c2e-c6f700c6ede9 |
80f9f3db | 1002 | ;;; desktop.el ends here |