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1 | ;;; fast-lock.el --- automagic text properties caching for fast Font Lock mode |
2 | ||
acaf905b | 3 | ;; Copyright (C) 1994-1998, 2001-2012 Free Software Foundation, Inc. |
5c8b653b SM |
4 | |
5 | ;; Author: Simon Marshall <simon@gnu.org> | |
6 | ;; Maintainer: FSF | |
7 | ;; Keywords: faces files | |
8 | ;; Version: 3.14 | |
bed7f140 | 9 | ;; Obsolete-since: 22.1 |
5c8b653b SM |
10 | |
11 | ;; This file is part of GNU Emacs. | |
12 | ||
4936186e | 13 | ;; GNU Emacs is free software: you can redistribute it and/or modify |
5c8b653b | 14 | ;; it under the terms of the GNU General Public License as published by |
4936186e GM |
15 | ;; the Free Software Foundation, either version 3 of the License, or |
16 | ;; (at your option) any later version. | |
5c8b653b SM |
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 | |
4936186e | 24 | ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. |
5c8b653b SM |
25 | |
26 | ;;; Commentary: | |
27 | ||
28 | ;; Fast Lock mode is a Font Lock support mode. | |
29 | ;; It makes visiting a file in Font Lock mode faster by restoring its face text | |
30 | ;; properties from automatically saved associated Font Lock cache files. | |
31 | ;; | |
32 | ;; See caveats and feedback below. | |
33 | ;; See also the lazy-lock package. (But don't use the two at the same time!) | |
34 | ||
35 | ;; Installation: | |
36 | ;; | |
37 | ;; Put in your ~/.emacs: | |
38 | ;; | |
39 | ;; (setq font-lock-support-mode 'fast-lock-mode) | |
40 | ;; | |
41 | ;; Start up a new Emacs and use font-lock as usual (except that you can use the | |
42 | ;; so-called "gaudier" fontification regexps on big files without frustration). | |
43 | ;; | |
44 | ;; When you visit a file (which has `font-lock-mode' enabled) that has a | |
45 | ;; corresponding Font Lock cache file associated with it, the Font Lock cache | |
46 | ;; will be loaded from that file instead of being generated by Font Lock code. | |
47 | ||
48 | ;; Caveats: | |
49 | ;; | |
50 | ;; A cache will be saved when visiting a compressed file using crypt++, but not | |
51 | ;; be read. This is a "feature"/"consequence"/"bug" of crypt++. | |
52 | ;; | |
53 | ;; Version control packages are likely to stamp all over file modification | |
54 | ;; times. Therefore the act of checking out may invalidate a cache. | |
55 | \f | |
56 | ;; History: | |
57 | ;; | |
58 | ;; 0.02--1.00: | |
59 | ;; - Changed name from turbo-prop to fast-lock. Automagic for font-lock only | |
60 | ;; - Made `fast-lock-mode' a minor mode, like G. Dinesh Dutt's fss-mode | |
61 | ;; 1.00--1.01: | |
62 | ;; - Turn on `fast-lock-mode' only if `buffer-file-name' or `interactive-p' | |
63 | ;; - Made `fast-lock-file-name' use `buffer-name' if `buffer-file-name' is nil | |
64 | ;; - Moved save-all conditions to `fast-lock-save-cache' | |
65 | ;; - Added `fast-lock-save-text-properties' to `kill-buffer-hook' | |
66 | ;; 1.01--2.00: complete rewrite---not worth the space to document | |
67 | ;; - Changed structure of text properties cache and threw out file mod checks | |
68 | ;; 2.00--2.01: | |
69 | ;; - Made `condition-case' forms understand `quit'. | |
70 | ;; - Made `fast-lock' require `font-lock' | |
71 | ;; - Made `fast-lock-cache-name' chase links (from Ben Liblit) | |
72 | ;; 2.01--3.00: | |
73 | ;; - Changed structure of cache to include `font-lock-keywords' (from rms) | |
74 | ;; - Changed `fast-lock-cache-mechanisms' to `fast-lock-cache-directories' | |
75 | ;; - Removed `fast-lock-read-others' | |
76 | ;; - Made `fast-lock-read-cache' ignore cache owner | |
77 | ;; - Made `fast-lock-save-cache-external' create cache directory | |
78 | ;; - Made `fast-lock-save-cache-external' save `font-lock-keywords' | |
79 | ;; - Made `fast-lock-cache-data' check `font-lock-keywords' | |
80 | ;; 3.00--3.01: incorporated port of 2.00 to Lucid, made by Barry Warsaw | |
81 | ;; - Package now provides itself | |
82 | ;; - Lucid: Use `font-lock-any-extents-p' for `font-lock-any-properties-p' | |
83 | ;; - Lucid: Use `list-faces' for `face-list' | |
84 | ;; - Lucid: Added `set-text-properties' | |
85 | ;; - Lucid: Made `turn-on-fast-lock' pass 1 not t to `fast-lock-mode' | |
86 | ;; - Removed test for `fast-lock-mode' from `fast-lock-read-cache' | |
87 | ;; - Lucid: Added Lucid-specific `fast-lock-get-face-properties' | |
88 | ;; 3.01--3.02: now works with Lucid Emacs, thanks to Barry Warsaw | |
89 | ;; - Made `fast-lock-cache-name' map ":" to ";" for OS/2 (from Serganova Vera) | |
90 | ;; - Made `fast-lock-cache-name' use abbreviated file name (from Barry Warsaw) | |
91 | ;; - Lucid: Separated handlers for `error' and `quit' for `condition-case' | |
92 | ;; 3.02--3.03: | |
93 | ;; - Changed `fast-lock-save-cache-external' to `fast-lock-save-cache-data' | |
94 | ;; - Lucid: Added Lucid-specific `fast-lock-set-face-properties' | |
95 | ;; 3.03--3.04: | |
96 | ;; - Corrected `subrp' test of Lucid code | |
97 | ;; - Replaced `font-lock-any-properties-p' with `text-property-not-all' | |
98 | ;; - Lucid: Made `fast-lock-set-face-properties' put `text-prop' on extents | |
99 | ;; - Made `fast-lock-cache-directories' a regexp alist (from Colin Rafferty) | |
100 | ;; - Made `fast-lock-cache-directory' to return a usable cache file directory | |
101 | ;; 3.04--3.05: | |
102 | ;; - Lucid: Fix for XEmacs 19.11 `text-property-not-all' | |
103 | ;; - Replaced `subrp' test of Lucid code with `emacs-version' `string-match' | |
104 | ;; - Made `byte-compile-warnings' omit `unresolved' on compilation | |
105 | ;; - Made `fast-lock-save-cache-data' use a buffer (from Rick Sladkey) | |
106 | ;; - Reverted to old `fast-lock-get-face-properties' (from Rick Sladkey) | |
107 | ;; 3.05--3.06: incorporated hack of 3.03, made by Jonathan Stigelman (Stig) | |
108 | ;; - Reverted to 3.04 version of `fast-lock-get-face-properties' | |
109 | ;; - XEmacs: Removed `list-faces' `defalias' | |
110 | ;; - Made `fast-lock-mode' and `turn-on-fast-lock' succeed `autoload' cookies | |
111 | ;; - Added `fast-lock-submit-bug-report' | |
112 | ;; - Renamed `fast-lock-save-size' to `fast-lock-minimum-size' | |
113 | ;; - Made `fast-lock-save-cache' output a message if no save ever attempted | |
114 | ;; - Made `fast-lock-save-cache-data' output a message if save attempted | |
115 | ;; - Made `fast-lock-cache-data' output a message if load attempted | |
116 | ;; - Made `fast-lock-save-cache-data' do `condition-case' not `unwind-protect' | |
117 | ;; - Made `fast-lock-save-cache' and `fast-lock-read-cache' return nothing | |
118 | ;; - Made `fast-lock-save-cache' check `buffer-modified-p' (Stig) | |
119 | ;; - Added `fast-lock-save-events' | |
120 | ;; - Added `fast-lock-after-save-hook' to `after-save-hook' (Stig) | |
121 | ;; - Added `fast-lock-kill-buffer-hook' to `kill-buffer-hook' | |
122 | ;; - Changed `fast-lock-save-caches' to `fast-lock-kill-emacs-hook' | |
123 | ;; - Added `fast-lock-kill-emacs-hook' to `kill-emacs-hook' | |
124 | ;; - Made `fast-lock-save-cache' check `verify-visited-file-modtime' (Stig) | |
125 | ;; - Made `visited-file-modtime' be the basis of the timestamp (Stig) | |
126 | ;; - Made `fast-lock-save-cache-1' and `fast-lock-cache-data' use/reformat it | |
127 | ;; - Added `fast-lock-cache-filename' to keep track of the cache file name | |
128 | ;; - Added `fast-lock-after-fontify-buffer' | |
129 | ;; - Added `fast-lock-save-faces' list of faces to save (idea from Stig/Tibor) | |
130 | ;; - Made `fast-lock-get-face-properties' functions use it | |
131 | ;; - XEmacs: Made `fast-lock-set-face-properties' do extents the Font Lock way | |
132 | ;; - XEmacs: Removed fix for `text-property-not-all' (19.11 support dropped) | |
133 | ;; - Made `fast-lock-mode' ensure `font-lock-mode' is on | |
134 | ;; - Made `fast-lock-save-cache' do `cdr-safe' not `cdr' (from Dave Foster) | |
135 | ;; - Made `fast-lock-save-cache' do `set-buffer' first (from Dave Foster) | |
136 | ;; - Made `fast-lock-save-cache' loop until saved or quit (from Georg Nikodym) | |
137 | ;; - Made `fast-lock-cache-data' check `buffer-modified-p' | |
138 | ;; - Made `fast-lock-cache-data' do `font-lock-compile-keywords' if necessary | |
139 | ;; - XEmacs: Made `font-lock-compile-keywords' `defalias' | |
140 | ;; 3.06--3.07: | |
141 | ;; - XEmacs: Add `fast-lock-after-fontify-buffer' to the Font Lock hook | |
142 | ;; - Made `fast-lock-cache-name' explain the use of `directory-abbrev-alist' | |
143 | ;; - Made `fast-lock-mode' use `buffer-file-truename' not `buffer-file-name' | |
144 | ;; 3.07--3.08: | |
145 | ;; - Made `fast-lock-read-cache' set `fast-lock-cache-filename' | |
146 | ;; 3.08--3.09: | |
20db1522 | 147 | ;; - Made `fast-lock-save-cache' cope if `fast-lock-minimum-size' is a list |
5c8b653b SM |
148 | ;; - Made `fast-lock-mode' respect the value of `font-lock-inhibit-thing-lock' |
149 | ;; - Added `fast-lock-after-unfontify-buffer' | |
150 | ;; 3.09--3.10: | |
151 | ;; - Rewrite for Common Lisp macros | |
152 | ;; - Made fast-lock.el barf on a crap 8+3 pseudo-OS (Eli Zaretskii help) | |
153 | ;; - XEmacs: Made `add-minor-mode' succeed `autoload' cookie | |
154 | ;; - XEmacs: Made `fast-lock-save-faces' default to `font-lock-face-list' | |
155 | ;; - Made `fast-lock-save-cache' use `font-lock-value-in-major-mode' | |
156 | ;; - Wrap with `save-buffer-state' (Ray Van Tassle report) | |
157 | ;; - Made `fast-lock-mode' wrap `font-lock-support-mode' | |
158 | ;; 3.10--3.11: | |
159 | ;; - Made `fast-lock-get-face-properties' cope with face lists | |
160 | ;; - Added `fast-lock-verbose' | |
161 | ;; - XEmacs: Add `font-lock-value-in-major-mode' if necessary | |
162 | ;; - Removed `fast-lock-submit-bug-report' and bade farewell | |
163 | ;; 3.11--3.12: | |
164 | ;; - Added Custom support (Hrvoje Niksic help) | |
165 | ;; - Made `save-buffer-state' wrap `inhibit-point-motion-hooks' | |
166 | ;; - Made `fast-lock-cache-data' simplify calls of `font-lock-compile-keywords' | |
167 | ;; 3.12--3.13: | |
168 | ;; - Removed `byte-*' variables from `eval-when-compile' (Erik Naggum hint) | |
169 | ;; - Changed structure of cache to include `font-lock-syntactic-keywords' | |
170 | ;; - Made `fast-lock-save-cache-1' save syntactic fontification data | |
171 | ;; - Made `fast-lock-cache-data' take syntactic fontification data | |
172 | ;; - Added `fast-lock-get-syntactic-properties' | |
173 | ;; - Renamed `fast-lock-set-face-properties' to `fast-lock-add-properties' | |
174 | ;; - Made `fast-lock-add-properties' add syntactic and face fontification data | |
175 | ;; 3.13--3.14: | |
176 | ;; - Made `fast-lock-cache-name' cope with `windowsnt' (Geoff Voelker fix) | |
177 | ;; - Made `fast-lock-verbose' use `other' widget (Andreas Schwab fix) | |
178 | ;; - Used `with-temp-message' where possible to make messages temporary. | |
179 | \f | |
180 | ;;; Code: | |
181 | ||
182 | (require 'font-lock) | |
183 | ||
73e6adaa DN |
184 | (declare-function msdos-long-file-names "msdos.c") |
185 | ||
5c8b653b SM |
186 | ;; Make sure fast-lock.el is supported. |
187 | (if (and (eq system-type 'ms-dos) (not (msdos-long-file-names))) | |
188 | (error "`fast-lock' was written for long file name systems")) | |
189 | ||
d4b9aae9 JB |
190 | (defvar font-lock-face-list) |
191 | ||
5c8b653b SM |
192 | (eval-when-compile |
193 | ;; | |
194 | ;; We don't do this at the top-level as we only use non-autoloaded macros. | |
195 | (require 'cl) | |
196 | ;; | |
197 | ;; We use this to preserve or protect things when modifying text properties. | |
198 | (defmacro save-buffer-state (varlist &rest body) | |
199 | "Bind variables according to VARLIST and eval BODY restoring buffer state." | |
200 | `(let* (,@(append varlist | |
201 | '((modified (buffer-modified-p)) (buffer-undo-list t) | |
202 | (inhibit-read-only t) (inhibit-point-motion-hooks t) | |
203 | before-change-functions after-change-functions | |
204 | deactivate-mark buffer-file-name buffer-file-truename))) | |
205 | ,@body | |
206 | (when (and (not modified) (buffer-modified-p)) | |
207 | (set-buffer-modified-p nil)))) | |
208 | (put 'save-buffer-state 'lisp-indent-function 1) | |
209 | ;; | |
210 | ;; We use this to verify that a face should be saved. | |
211 | (defmacro fast-lock-save-facep (face) | |
212 | "Return non-nil if FACE is one of `fast-lock-save-faces'." | |
213 | `(or (null fast-lock-save-faces) | |
214 | (if (symbolp ,face) | |
215 | (memq ,face fast-lock-save-faces) | |
216 | (let ((faces ,face)) | |
217 | (while (unless (memq (car faces) fast-lock-save-faces) | |
218 | (setq faces (cdr faces)))) | |
d31e8e87 | 219 | faces))))) |
5c8b653b | 220 | |
5ec3af5e SM |
221 | ;;(defun fast-lock-submit-bug-report () |
222 | ;; "Submit via mail a bug report on fast-lock.el." | |
223 | ;; (interactive) | |
224 | ;; (let ((reporter-prompt-for-summary-p t)) | |
225 | ;; (reporter-submit-bug-report "simon@gnu.org" "fast-lock 3.14" | |
226 | ;; '(fast-lock-cache-directories fast-lock-minimum-size | |
227 | ;; fast-lock-save-others fast-lock-save-events fast-lock-save-faces | |
228 | ;; fast-lock-verbose) | |
229 | ;; nil nil | |
230 | ;; (concat "Hi Si., | |
231 | ;; | |
232 | ;;I want to report a bug. I've read the `Bugs' section of `Info' on Emacs, so I | |
233 | ;;know how to make a clear and unambiguous report. To reproduce the bug: | |
234 | ;; | |
235 | ;;Start a fresh editor via `" invocation-name " -no-init-file -no-site-file'. | |
236 | ;;In the `*scratch*' buffer, evaluate:")))) | |
237 | ||
238 | (defgroup fast-lock nil | |
239 | "Font Lock support mode to cache fontification." | |
240 | :load 'fast-lock | |
241 | :group 'font-lock) | |
5c8b653b SM |
242 | |
243 | (defvar fast-lock-mode nil) ; Whether we are turned on. | |
244 | (defvar fast-lock-cache-timestamp nil) ; For saving/reading. | |
245 | (defvar fast-lock-cache-filename nil) ; For deleting. | |
246 | \f | |
247 | ;; User Variables: | |
248 | ||
249 | (defcustom fast-lock-minimum-size 25600 | |
250 | "*Minimum size of a buffer for cached fontification. | |
251 | Only buffers more than this can have associated Font Lock cache files saved. | |
252 | If nil, means cache files are never created. | |
253 | If a list, each element should be a cons pair of the form (MAJOR-MODE . SIZE), | |
254 | where MAJOR-MODE is a symbol or t (meaning the default). For example: | |
255 | ((c-mode . 25600) (c++-mode . 25600) (rmail-mode . 1048576)) | |
256 | means that the minimum size is 25K for buffers in C or C++ modes, one megabyte | |
257 | for buffers in Rmail mode, and size is irrelevant otherwise." | |
258 | :type '(choice (const :tag "none" nil) | |
259 | (integer :tag "size") | |
260 | (repeat :menu-tag "mode specific" :tag "mode specific" | |
261 | :value ((t . nil)) | |
262 | (cons :tag "Instance" | |
263 | (radio :tag "Mode" | |
264 | (const :tag "all" t) | |
265 | (symbol :tag "name")) | |
266 | (radio :tag "Size" | |
267 | (const :tag "none" nil) | |
268 | (integer :tag "size"))))) | |
269 | :group 'fast-lock) | |
270 | ||
6483b8c7 | 271 | (defcustom fast-lock-cache-directories '("~/.emacs-flc") |
5c8b653b SM |
272 | ; - `internal', keep each file's Font Lock cache file in the same file. |
273 | ; - `external', keep each file's Font Lock cache file in the same directory. | |
274 | "*Directories in which Font Lock cache files are saved and read. | |
275 | Each item should be either DIR or a cons pair of the form (REGEXP . DIR) where | |
276 | DIR is a directory name (relative or absolute) and REGEXP is a regexp. | |
277 | ||
278 | An attempt will be made to save or read Font Lock cache files using these items | |
279 | until one succeeds (i.e., until a readable or writable one is found). If an | |
280 | item contains REGEXP, DIR is used only if the buffer file name matches REGEXP. | |
281 | For example: | |
282 | ||
283 | (let ((home (expand-file-name (abbreviate-file-name (file-truename \"~/\"))))) | |
284 | (list (cons (concat \"^\" (regexp-quote home)) \".\") \"~/.emacs-flc\")) | |
285 | => | |
286 | ((\"^/your/true/home/directory/\" . \".\") \"~/.emacs-flc\") | |
287 | ||
288 | would cause a file's current directory to be used if the file is under your | |
6483b8c7 SM |
289 | home directory hierarchy, or otherwise the absolute directory `~/.emacs-flc'. |
290 | For security reasons, it is not advisable to use the file's current directory | |
291 | to avoid the possibility of using the cache of another user." | |
5c8b653b SM |
292 | :type '(repeat (radio (directory :tag "directory") |
293 | (cons :tag "Matching" | |
294 | (regexp :tag "regexp") | |
295 | (directory :tag "directory")))) | |
296 | :group 'fast-lock) | |
6483b8c7 | 297 | (put 'fast-lock-cache-directories 'risky-local-variable t) |
5c8b653b SM |
298 | |
299 | (defcustom fast-lock-save-events '(kill-buffer kill-emacs) | |
300 | "*Events under which caches will be saved. | |
301 | Valid events are `save-buffer', `kill-buffer' and `kill-emacs'. | |
302 | If concurrent editing sessions use the same associated cache file for a file's | |
303 | buffer, then you should add `save-buffer' to this list." | |
304 | :type '(set (const :tag "buffer saving" save-buffer) | |
305 | (const :tag "buffer killing" kill-buffer) | |
306 | (const :tag "emacs killing" kill-emacs)) | |
307 | :group 'fast-lock) | |
308 | ||
309 | (defcustom fast-lock-save-others t | |
310 | "*If non-nil, save Font Lock cache files irrespective of file owner. | |
311 | If nil, means only buffer files known to be owned by you can have associated | |
312 | Font Lock cache files saved. Ownership may be unknown for networked files." | |
313 | :type 'boolean | |
314 | :group 'fast-lock) | |
315 | ||
316 | (defcustom fast-lock-verbose font-lock-verbose | |
317 | "*If non-nil, means show status messages for cache processing. | |
318 | If a number, only buffers greater than this size have processing messages." | |
319 | :type '(choice (const :tag "never" nil) | |
320 | (other :tag "always" t) | |
321 | (integer :tag "size")) | |
322 | :group 'fast-lock) | |
323 | ||
324 | (defvar fast-lock-save-faces | |
f8246027 | 325 | (when (featurep 'xemacs) |
5c8b653b SM |
326 | ;; XEmacs uses extents for everything, so we have to pick the right ones. |
327 | font-lock-face-list) | |
328 | "Faces that will be saved in a Font Lock cache file. | |
329 | If nil, means information for all faces will be saved.") | |
330 | \f | |
331 | ;; User Functions: | |
332 | ||
333 | ;;;###autoload | |
334 | (defun fast-lock-mode (&optional arg) | |
335 | "Toggle Fast Lock mode. | |
336 | With arg, turn Fast Lock mode on if and only if arg is positive and the buffer | |
337 | is associated with a file. Enable it automatically in your `~/.emacs' by: | |
338 | ||
339 | (setq font-lock-support-mode 'fast-lock-mode) | |
340 | ||
341 | If Fast Lock mode is enabled, and the current buffer does not contain any text | |
342 | properties, any associated Font Lock cache is used if its timestamp matches the | |
343 | buffer's file, and its `font-lock-keywords' match those that you are using. | |
344 | ||
345 | Font Lock caches may be saved: | |
346 | - When you save the file's buffer. | |
347 | - When you kill an unmodified file's buffer. | |
348 | - When you exit Emacs, for all unmodified or saved buffers. | |
349 | Depending on the value of `fast-lock-save-events'. | |
350 | See also the commands `fast-lock-read-cache' and `fast-lock-save-cache'. | |
351 | ||
352 | Use \\[font-lock-fontify-buffer] to fontify the buffer if the cache is bad. | |
353 | ||
354 | Various methods of control are provided for the Font Lock cache. In general, | |
355 | see variable `fast-lock-cache-directories' and function `fast-lock-cache-name'. | |
356 | For saving, see variables `fast-lock-minimum-size', `fast-lock-save-events', | |
357 | `fast-lock-save-others' and `fast-lock-save-faces'." | |
358 | (interactive "P") | |
359 | ;; Only turn on if we are visiting a file. We could use `buffer-file-name', | |
360 | ;; but many packages temporarily wrap that to nil when doing their own thing. | |
361 | (set (make-local-variable 'fast-lock-mode) | |
362 | (and buffer-file-truename | |
363 | (not (memq 'fast-lock-mode font-lock-inhibit-thing-lock)) | |
364 | (if arg (> (prefix-numeric-value arg) 0) (not fast-lock-mode)))) | |
365 | (if (and fast-lock-mode (not font-lock-mode)) | |
366 | ;; Turned on `fast-lock-mode' rather than `font-lock-mode'. | |
401723ab SM |
367 | (progn |
368 | (message "Use font-lock-support-mode rather than calling fast-lock-mode") | |
369 | (sit-for 2)) | |
5c8b653b SM |
370 | ;; Let's get down to business. |
371 | (set (make-local-variable 'fast-lock-cache-timestamp) nil) | |
372 | (set (make-local-variable 'fast-lock-cache-filename) nil) | |
373 | (when (and fast-lock-mode (not font-lock-fontified)) | |
374 | (fast-lock-read-cache)))) | |
375 | ||
376 | (defun fast-lock-read-cache () | |
377 | "Read the Font Lock cache for the current buffer. | |
378 | ||
379 | The following criteria must be met for a Font Lock cache file to be read: | |
380 | - Fast Lock mode must be turned on in the buffer. | |
381 | - The buffer must not be modified. | |
382 | - The buffer's `font-lock-keywords' must match the cache's. | |
383 | - The buffer file's timestamp must match the cache's. | |
384 | - Criteria imposed by `fast-lock-cache-directories'. | |
385 | ||
386 | See `fast-lock-mode'." | |
387 | (interactive) | |
388 | (let ((directories fast-lock-cache-directories) | |
389 | (modified (buffer-modified-p)) (inhibit-read-only t) | |
390 | (fontified font-lock-fontified)) | |
391 | (set (make-local-variable 'font-lock-fontified) nil) | |
392 | ;; Keep trying directories until fontification is turned off. | |
393 | (while (and directories (not font-lock-fontified)) | |
394 | (let ((directory (fast-lock-cache-directory (car directories) nil))) | |
395 | (condition-case nil | |
396 | (when directory | |
397 | (setq fast-lock-cache-filename (fast-lock-cache-name directory)) | |
398 | (when (file-readable-p fast-lock-cache-filename) | |
399 | (load fast-lock-cache-filename t t t))) | |
400 | (error nil) (quit nil)) | |
401 | (setq directories (cdr directories)))) | |
402 | ;; Unset `fast-lock-cache-filename', and restore `font-lock-fontified', if | |
403 | ;; we don't use a cache. (Note that `fast-lock-cache-data' sets the value | |
404 | ;; of `fast-lock-cache-timestamp'.) | |
405 | (set-buffer-modified-p modified) | |
406 | (unless font-lock-fontified | |
407 | (setq fast-lock-cache-filename nil font-lock-fontified fontified)))) | |
408 | ||
409 | (defun fast-lock-save-cache (&optional buffer) | |
410 | "Save the Font Lock cache of BUFFER or the current buffer. | |
411 | ||
412 | The following criteria must be met for a Font Lock cache file to be saved: | |
413 | - Fast Lock mode must be turned on in the buffer. | |
414 | - The event must be one of `fast-lock-save-events'. | |
415 | - The buffer must be at least `fast-lock-minimum-size' bytes long. | |
416 | - The buffer file must be owned by you, or `fast-lock-save-others' must be t. | |
417 | - The buffer must contain at least one `face' text property. | |
418 | - The buffer must not be modified. | |
419 | - The buffer file's timestamp must be the same as the file's on disk. | |
420 | - The on disk file's timestamp must be different than the buffer's cache. | |
421 | - Criteria imposed by `fast-lock-cache-directories'. | |
422 | ||
423 | See `fast-lock-mode'." | |
424 | (interactive) | |
425 | (save-excursion | |
426 | (when buffer | |
427 | (set-buffer buffer)) | |
428 | (let ((min-size (font-lock-value-in-major-mode fast-lock-minimum-size)) | |
429 | (file-timestamp (visited-file-modtime)) (saved nil)) | |
430 | (when (and fast-lock-mode | |
431 | ;; | |
432 | ;; "Only save if the buffer matches the file, the file has | |
433 | ;; changed, and it was changed by the current emacs session." | |
434 | ;; | |
435 | ;; Only save if the buffer is not modified, | |
436 | ;; (i.e., so we don't save for something not on disk) | |
437 | (not (buffer-modified-p)) | |
438 | ;; and the file's timestamp is the same as the buffer's, | |
439 | ;; (i.e., someone else hasn't written the file in the meantime) | |
440 | (verify-visited-file-modtime (current-buffer)) | |
441 | ;; and the file's timestamp is different from the cache's. | |
442 | ;; (i.e., a save has occurred since the cache was read) | |
443 | (not (equal fast-lock-cache-timestamp file-timestamp)) | |
444 | ;; | |
445 | ;; Only save if user's restrictions are satisfied. | |
446 | (and min-size (>= (buffer-size) min-size)) | |
447 | (or fast-lock-save-others | |
448 | (eq (user-uid) (nth 2 (file-attributes buffer-file-name)))) | |
449 | ;; | |
450 | ;; Only save if there are `face' properties to save. | |
451 | (text-property-not-all (point-min) (point-max) 'face nil)) | |
452 | ;; | |
453 | ;; Try each directory until we manage to save or the user quits. | |
454 | (let ((directories fast-lock-cache-directories)) | |
455 | (while (and directories (memq saved '(nil error))) | |
456 | (let* ((dir (fast-lock-cache-directory (car directories) t)) | |
457 | (file (and dir (fast-lock-cache-name dir)))) | |
458 | (when (and file (file-writable-p file)) | |
459 | (setq saved (fast-lock-save-cache-1 file file-timestamp))) | |
460 | (setq directories (cdr directories))))))))) | |
461 | ||
462 | ;;;###autoload | |
463 | (defun turn-on-fast-lock () | |
464 | "Unconditionally turn on Fast Lock mode." | |
465 | (fast-lock-mode t)) | |
466 | \f | |
467 | ;;; API Functions: | |
468 | ||
469 | (defun fast-lock-after-fontify-buffer () | |
470 | ;; Delete the Font Lock cache file used to restore fontification, if any. | |
471 | (when fast-lock-cache-filename | |
472 | (if (file-writable-p fast-lock-cache-filename) | |
473 | (delete-file fast-lock-cache-filename) | |
474 | (message "File %s font lock cache cannot be deleted" (buffer-name)))) | |
475 | ;; Flag so that a cache will be saved later even if the file is never saved. | |
476 | (setq fast-lock-cache-timestamp nil)) | |
477 | ||
478 | (defalias 'fast-lock-after-unfontify-buffer | |
479 | 'ignore) | |
480 | \f | |
481 | ;; Miscellaneous Functions: | |
482 | ||
483 | (defun fast-lock-save-cache-after-save-file () | |
484 | ;; Do `fast-lock-save-cache' if `save-buffer' is on `fast-lock-save-events'. | |
485 | (when (memq 'save-buffer fast-lock-save-events) | |
486 | (fast-lock-save-cache))) | |
487 | ||
488 | (defun fast-lock-save-cache-before-kill-buffer () | |
489 | ;; Do `fast-lock-save-cache' if `kill-buffer' is on `fast-lock-save-events'. | |
490 | (when (memq 'kill-buffer fast-lock-save-events) | |
491 | (fast-lock-save-cache))) | |
492 | ||
493 | (defun fast-lock-save-caches-before-kill-emacs () | |
494 | ;; Do `fast-lock-save-cache's if `kill-emacs' is on `fast-lock-save-events'. | |
495 | (when (memq 'kill-emacs fast-lock-save-events) | |
496 | (mapcar 'fast-lock-save-cache (buffer-list)))) | |
497 | ||
498 | (defun fast-lock-cache-directory (directory create) | |
499 | "Return usable directory based on DIRECTORY. | |
500 | Returns nil if the directory does not exist, or, if CREATE non-nil, cannot be | |
501 | created. DIRECTORY may be a string or a cons pair of the form (REGEXP . DIR). | |
502 | See `fast-lock-cache-directories'." | |
503 | (let ((dir | |
504 | (cond ((not buffer-file-name) | |
505 | ;; Should never be nil, but `crypt++' screws it up. | |
506 | nil) | |
507 | ((stringp directory) | |
508 | ;; Just a directory. | |
509 | directory) | |
510 | (t | |
e7f767c2 | 511 | ;; A directory if the file name matches the regexp. |
5c8b653b SM |
512 | (let ((bufile (expand-file-name buffer-file-truename)) |
513 | (case-fold-search nil)) | |
514 | (when (save-match-data (string-match (car directory) bufile)) | |
515 | (cdr directory))))))) | |
516 | (cond ((not dir) | |
517 | nil) | |
518 | ((file-accessible-directory-p dir) | |
519 | dir) | |
520 | (create | |
521 | (condition-case nil | |
522 | (progn (make-directory dir t) dir) | |
523 | (error nil)))))) | |
524 | ||
525 | ;; If you are wondering why we only hash if the directory is not ".", rather | |
526 | ;; than if `file-name-absolute-p', it is because if we just appended ".flc" for | |
527 | ;; relative cache directories (that are not ".") then it is possible that more | |
528 | ;; than one file would have the same cache name in that directory, if the luser | |
529 | ;; made a link from one relative cache directory to another. (Phew!) | |
530 | (defun fast-lock-cache-name (directory) | |
531 | "Return full cache file name using caching DIRECTORY. | |
532 | If DIRECTORY is `.', the file name is the buffer file name appended with `.flc'. | |
533 | Otherwise, the file name is constructed from DIRECTORY and the buffer's true | |
534 | abbreviated file name, with all `/' characters in the name replaced with `#' | |
535 | characters, and appended with `.flc'. | |
536 | ||
537 | If the same file has different cache file names when edited on different | |
538 | machines, e.g., on one machine the cache file name has the prefix `#home', | |
539 | perhaps due to automount, try putting in your `~/.emacs' something like: | |
540 | ||
541 | (setq directory-abbrev-alist (cons '(\"^/home/\" . \"/\") directory-abbrev-alist)) | |
542 | ||
543 | Emacs automagically removes the common `/tmp_mnt' automount prefix by default. | |
544 | ||
545 | See `fast-lock-cache-directory'." | |
546 | (if (string-equal directory ".") | |
547 | (concat buffer-file-name ".flc") | |
548 | (let* ((bufile (expand-file-name buffer-file-truename)) | |
549 | (chars-alist | |
a3374680 | 550 | (if (memq system-type '(windows-nt cygwin)) |
5c8b653b SM |
551 | '((?/ . (?#)) (?# . (?# ?#)) (?: . (?\;)) (?\; . (?\; ?\;))) |
552 | '((?/ . (?#)) (?# . (?# ?#))))) | |
553 | (mapchars | |
554 | (function (lambda (c) (or (cdr (assq c chars-alist)) (list c)))))) | |
555 | (concat | |
556 | (file-name-as-directory (expand-file-name directory)) | |
557 | (mapconcat 'char-to-string (apply 'append (mapcar mapchars bufile)) "") | |
558 | ".flc")))) | |
559 | \f | |
560 | ;; Font Lock Cache Processing Functions: | |
561 | ||
562 | ;; The version 3 format of the cache is: | |
563 | ;; | |
564 | ;; (fast-lock-cache-data VERSION TIMESTAMP | |
565 | ;; font-lock-syntactic-keywords SYNTACTIC-PROPERTIES | |
566 | ;; font-lock-keywords FACE-PROPERTIES) | |
567 | ||
568 | (defun fast-lock-save-cache-1 (file timestamp) | |
569 | ;; Save the FILE with the TIMESTAMP plus fontification data. | |
570 | ;; Returns non-nil if a save was attempted to a writable cache file. | |
571 | (let ((tpbuf (generate-new-buffer " *fast-lock*")) | |
572 | (verbose (if (numberp fast-lock-verbose) | |
573 | (> (buffer-size) fast-lock-verbose) | |
574 | fast-lock-verbose)) | |
575 | (saved t)) | |
576 | (with-temp-message | |
577 | (when verbose | |
578 | (format "Saving %s font lock cache..." (buffer-name))) | |
579 | (condition-case nil | |
580 | (save-excursion | |
581 | (print (list 'fast-lock-cache-data 3 | |
582 | (list 'quote timestamp) | |
583 | (list 'quote font-lock-syntactic-keywords) | |
584 | (list 'quote (fast-lock-get-syntactic-properties)) | |
585 | (list 'quote font-lock-keywords) | |
586 | (list 'quote (fast-lock-get-face-properties))) | |
587 | tpbuf) | |
588 | (set-buffer tpbuf) | |
589 | (write-region (point-min) (point-max) file nil 'quietly) | |
590 | (setq fast-lock-cache-timestamp timestamp | |
591 | fast-lock-cache-filename file)) | |
592 | (error (setq saved 'error)) (quit (setq saved 'quit))) | |
593 | (kill-buffer tpbuf)) | |
594 | (cond ((eq saved 'quit) | |
595 | (message "Saving %s font lock cache...quit" (buffer-name))) | |
596 | ((eq saved 'error) | |
597 | (message "Saving %s font lock cache...failed" (buffer-name)))) | |
598 | ;; We return non-nil regardless of whether a failure occurred. | |
599 | saved)) | |
600 | ||
601 | (defun fast-lock-cache-data (version timestamp | |
602 | syntactic-keywords syntactic-properties | |
603 | keywords face-properties | |
604 | &rest ignored) | |
605 | ;; Find value of syntactic keywords in case it is a symbol. | |
606 | (setq font-lock-syntactic-keywords (font-lock-eval-keywords | |
607 | font-lock-syntactic-keywords)) | |
608 | ;; Compile all keywords in case some are and some aren't. | |
609 | (when font-lock-syntactic-keywords | |
610 | (setq font-lock-syntactic-keywords (font-lock-compile-keywords | |
9af0a0b9 | 611 | font-lock-syntactic-keywords t))) |
5c8b653b | 612 | (when syntactic-keywords |
9af0a0b9 | 613 | (setq syntactic-keywords (font-lock-compile-keywords syntactic-keywords t))) |
5c8b653b SM |
614 | (setq font-lock-keywords (font-lock-compile-keywords font-lock-keywords) |
615 | keywords (font-lock-compile-keywords keywords)) | |
616 | ;; Use the Font Lock cache SYNTACTIC-PROPERTIES and FACE-PROPERTIES if we're | |
617 | ;; using cache VERSION format 3, the current buffer's file timestamp matches | |
618 | ;; the TIMESTAMP, the current buffer's `font-lock-syntactic-keywords' are the | |
619 | ;; same as SYNTACTIC-KEYWORDS, and the current buffer's `font-lock-keywords' | |
620 | ;; are the same as KEYWORDS. | |
621 | (let ((buf-timestamp (visited-file-modtime)) | |
622 | (verbose (if (numberp fast-lock-verbose) | |
623 | (> (buffer-size) fast-lock-verbose) | |
624 | fast-lock-verbose)) | |
625 | (loaded t)) | |
626 | (if (or (/= version 3) | |
627 | (buffer-modified-p) | |
628 | (not (equal timestamp buf-timestamp)) | |
629 | (not (equal syntactic-keywords font-lock-syntactic-keywords)) | |
630 | (not (equal keywords font-lock-keywords))) | |
631 | (setq loaded nil) | |
632 | (with-temp-message | |
633 | (when verbose | |
634 | (format "Loading %s font lock cache..." (buffer-name))) | |
635 | (condition-case nil | |
636 | (fast-lock-add-properties syntactic-properties face-properties) | |
637 | (error (setq loaded 'error)) (quit (setq loaded 'quit)))) | |
638 | (cond ((eq loaded 'quit) | |
639 | (message "Loading %s font lock cache...quit" (buffer-name))) | |
640 | ((eq loaded 'error) | |
641 | (message "Loading %s font lock cache...failed" (buffer-name))))) | |
642 | (setq font-lock-fontified (eq loaded t) | |
643 | fast-lock-cache-timestamp (and (eq loaded t) timestamp)))) | |
644 | \f | |
645 | ;; Text Properties Processing Functions: | |
646 | ||
647 | ;; This is fast, but fails if adjacent characters have different `face' text | |
648 | ;; properties. Maybe that's why I dropped it in the first place? | |
649 | ;(defun fast-lock-get-face-properties () | |
650 | ; "Return a list of `face' text properties in the current buffer. | |
651 | ;Each element of the list is of the form (VALUE START1 END1 START2 END2 ...) | |
652 | ;where VALUE is a `face' property value and STARTx and ENDx are positions." | |
653 | ; (save-restriction | |
654 | ; (widen) | |
655 | ; (let ((start (text-property-not-all (point-min) (point-max) 'face nil)) | |
656 | ; (limit (point-max)) end properties value cell) | |
657 | ; (while start | |
658 | ; (setq end (next-single-property-change start 'face nil limit) | |
659 | ; value (get-text-property start 'face)) | |
660 | ; ;; Make, or add to existing, list of regions with same `face'. | |
661 | ; (if (setq cell (assq value properties)) | |
662 | ; (setcdr cell (cons start (cons end (cdr cell)))) | |
663 | ; (setq properties (cons (list value start end) properties))) | |
664 | ; (setq start (next-single-property-change end 'face))) | |
665 | ; properties))) | |
666 | ||
667 | ;; This is slow, but copes if adjacent characters have different `face' text | |
668 | ;; properties, but fails if they are lists. | |
669 | ;(defun fast-lock-get-face-properties () | |
670 | ; "Return a list of `face' text properties in the current buffer. | |
671 | ;Each element of the list is of the form (VALUE START1 END1 START2 END2 ...) | |
672 | ;where VALUE is a `face' property value and STARTx and ENDx are positions. | |
673 | ;Only those `face' VALUEs in `fast-lock-save-faces' are returned." | |
674 | ; (save-restriction | |
675 | ; (widen) | |
676 | ; (let ((faces (or fast-lock-save-faces (face-list))) (limit (point-max)) | |
677 | ; properties regions face start end) | |
678 | ; (while faces | |
679 | ; (setq face (car faces) faces (cdr faces) regions () end (point-min)) | |
680 | ; ;; Make a list of start/end regions with `face' property face. | |
681 | ; (while (setq start (text-property-any end limit 'face face)) | |
682 | ; (setq end (or (text-property-not-all start limit 'face face) limit) | |
683 | ; regions (cons start (cons end regions)))) | |
684 | ; ;; Add `face' face's regions, if any, to properties. | |
685 | ; (when regions | |
686 | ; (push (cons face regions) properties))) | |
687 | ; properties))) | |
688 | ||
689 | (defun fast-lock-get-face-properties () | |
690 | "Return a list of `face' text properties in the current buffer. | |
691 | Each element of the list is of the form (VALUE START1 END1 START2 END2 ...) | |
692 | where VALUE is a `face' property value and STARTx and ENDx are positions." | |
693 | (save-restriction | |
694 | (widen) | |
695 | (let ((start (text-property-not-all (point-min) (point-max) 'face nil)) | |
696 | end properties value cell) | |
697 | (while start | |
698 | (setq end (next-single-property-change start 'face nil (point-max)) | |
699 | value (get-text-property start 'face)) | |
700 | ;; Make, or add to existing, list of regions with same `face'. | |
701 | (cond ((setq cell (assoc value properties)) | |
702 | (setcdr cell (cons start (cons end (cdr cell))))) | |
703 | ((fast-lock-save-facep value) | |
704 | (push (list value start end) properties))) | |
705 | (setq start (text-property-not-all end (point-max) 'face nil))) | |
706 | properties))) | |
707 | ||
708 | (defun fast-lock-get-syntactic-properties () | |
709 | "Return a list of `syntax-table' text properties in the current buffer. | |
710 | See `fast-lock-get-face-properties'." | |
711 | (save-restriction | |
712 | (widen) | |
713 | (let ((start (text-property-not-all (point-min) (point-max) 'syntax-table | |
714 | nil)) | |
715 | end properties value cell) | |
716 | (while start | |
717 | (setq end (next-single-property-change start 'syntax-table nil | |
718 | (point-max)) | |
719 | value (get-text-property start 'syntax-table)) | |
720 | ;; Make, or add to existing, list of regions with same `syntax-table'. | |
721 | (if (setq cell (assoc value properties)) | |
722 | (setcdr cell (cons start (cons end (cdr cell)))) | |
723 | (push (list value start end) properties)) | |
724 | (setq start (text-property-not-all end (point-max) 'syntax-table nil))) | |
725 | properties))) | |
726 | ||
727 | (defun fast-lock-add-properties (syntactic-properties face-properties) | |
728 | "Add `syntax-table' and `face' text properties to the current buffer. | |
729 | Any existing `syntax-table' and `face' text properties are removed first. | |
730 | See `fast-lock-get-face-properties'." | |
731 | (save-buffer-state (plist regions) | |
732 | (save-restriction | |
733 | (widen) | |
734 | (font-lock-unfontify-region (point-min) (point-max)) | |
735 | ;; | |
736 | ;; Set the `syntax-table' property for each start/end region. | |
737 | (while syntactic-properties | |
738 | (setq plist (list 'syntax-table (car (car syntactic-properties))) | |
739 | regions (cdr (car syntactic-properties)) | |
740 | syntactic-properties (cdr syntactic-properties)) | |
741 | (while regions | |
742 | (add-text-properties (nth 0 regions) (nth 1 regions) plist) | |
743 | (setq regions (nthcdr 2 regions)))) | |
744 | ;; | |
745 | ;; Set the `face' property for each start/end region. | |
746 | (while face-properties | |
747 | (setq plist (list 'face (car (car face-properties))) | |
748 | regions (cdr (car face-properties)) | |
749 | face-properties (cdr face-properties)) | |
750 | (while regions | |
751 | (add-text-properties (nth 0 regions) (nth 1 regions) plist) | |
752 | (setq regions (nthcdr 2 regions))))))) | |
753 | \f | |
754 | ;; Functions for XEmacs: | |
755 | ||
2f42c75f | 756 | (when (featurep 'xemacs) |
5c8b653b SM |
757 | ;; |
758 | ;; It would be better to use XEmacs' `map-extents' over extents with a | |
759 | ;; `font-lock' property, but `face' properties are on different extents. | |
760 | (defun fast-lock-get-face-properties () | |
761 | "Return a list of `face' text properties in the current buffer. | |
762 | Each element of the list is of the form (VALUE START1 END1 START2 END2 ...) | |
763 | where VALUE is a `face' property value and STARTx and ENDx are positions. | |
764 | Only those `face' VALUEs in `fast-lock-save-faces' are returned." | |
765 | (save-restriction | |
766 | (widen) | |
767 | (let ((properties ()) cell) | |
768 | (map-extents | |
769 | (function (lambda (extent ignore) | |
770 | (let ((value (extent-face extent))) | |
771 | ;; We're only interested if it's one of `fast-lock-save-faces'. | |
772 | (when (and value (fast-lock-save-facep value)) | |
773 | (let ((start (extent-start-position extent)) | |
774 | (end (extent-end-position extent))) | |
775 | ;; Make or add to existing list of regions with the same | |
776 | ;; `face' property value. | |
777 | (if (setq cell (assoc value properties)) | |
778 | (setcdr cell (cons start (cons end (cdr cell)))) | |
779 | (push (list value start end) properties)))) | |
780 | ;; Return nil to keep `map-extents' going. | |
781 | nil)))) | |
782 | properties))) | |
783 | ;; | |
784 | ;; XEmacs does not support the `syntax-table' text property. | |
785 | (defalias 'fast-lock-get-syntactic-properties | |
786 | 'ignore) | |
787 | ;; | |
788 | ;; Make extents just like XEmacs' font-lock.el does. | |
789 | (defun fast-lock-add-properties (syntactic-properties face-properties) | |
790 | "Set `face' text properties in the current buffer. | |
791 | Any existing `face' text properties are removed first. | |
792 | See `fast-lock-get-face-properties'." | |
793 | (save-restriction | |
794 | (widen) | |
795 | (font-lock-unfontify-region (point-min) (point-max)) | |
796 | ;; Set the `face' property, etc., for each start/end region. | |
797 | (while face-properties | |
798 | (let ((face (car (car face-properties))) | |
799 | (regions (cdr (car face-properties)))) | |
800 | (while regions | |
801 | (font-lock-set-face (nth 0 regions) (nth 1 regions) face) | |
802 | (setq regions (nthcdr 2 regions))) | |
803 | (setq face-properties (cdr face-properties)))) | |
804 | ;; XEmacs does not support the `syntax-table' text property. | |
805 | )) | |
806 | ;; | |
807 | ;; XEmacs 19.12 font-lock.el's `font-lock-fontify-buffer' runs a hook. | |
808 | (add-hook 'font-lock-after-fontify-buffer-hook | |
809 | 'fast-lock-after-fontify-buffer)) | |
810 | ||
811 | (unless (boundp 'font-lock-syntactic-keywords) | |
812 | (defvar font-lock-syntactic-keywords nil)) | |
813 | ||
814 | (unless (boundp 'font-lock-inhibit-thing-lock) | |
815 | (defvar font-lock-inhibit-thing-lock nil)) | |
816 | ||
817 | (unless (fboundp 'font-lock-compile-keywords) | |
818 | (defalias 'font-lock-compile-keywords 'identity)) | |
819 | ||
820 | (unless (fboundp 'font-lock-eval-keywords) | |
821 | (defun font-lock-eval-keywords (keywords) | |
822 | (if (symbolp keywords) | |
823 | (font-lock-eval-keywords (if (fboundp keywords) | |
824 | (funcall keywords) | |
825 | (eval keywords))) | |
826 | keywords))) | |
827 | ||
828 | (unless (fboundp 'font-lock-value-in-major-mode) | |
829 | (defun font-lock-value-in-major-mode (alist) | |
830 | (if (consp alist) | |
831 | (cdr (or (assq major-mode alist) (assq t alist))) | |
832 | alist))) | |
833 | ||
834 | (unless (fboundp 'current-message) | |
835 | (defun current-message () | |
836 | "")) | |
837 | \f | |
838 | ;; Install ourselves: | |
839 | ||
840 | (add-hook 'after-save-hook 'fast-lock-save-cache-after-save-file) | |
841 | (add-hook 'kill-buffer-hook 'fast-lock-save-cache-before-kill-buffer) | |
845fc5e5 JB |
842 | (unless noninteractive |
843 | (add-hook 'kill-emacs-hook 'fast-lock-save-caches-before-kill-emacs)) | |
5c8b653b SM |
844 | |
845 | ;;;###autoload | |
846 | (when (fboundp 'add-minor-mode) | |
847 | (defvar fast-lock-mode nil) | |
848 | (add-minor-mode 'fast-lock-mode nil)) | |
849 | ;;;###dont-autoload | |
850 | (unless (assq 'fast-lock-mode minor-mode-alist) | |
851 | (setq minor-mode-alist (append minor-mode-alist '((fast-lock-mode nil))))) | |
852 | ||
853 | ;; Provide ourselves: | |
854 | ||
855 | (provide 'fast-lock) | |
856 | ||
5c8b653b | 857 | ;;; fast-lock.el ends here |