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19f79085 | 1 | ;;; fast-lock.el --- Automagic text properties caching for fast Font Lock mode. |
6492fcd1 | 2 | |
caf1765c | 3 | ;; Copyright (C) 1994, 1995, 1996, 1997 Free Software Foundation, Inc. |
6492fcd1 | 4 | |
19f79085 | 5 | ;; Author: Simon Marshall <simon@gnu.ai.mit.edu> |
6492fcd1 | 6 | ;; Keywords: faces files |
0ceb91c1 | 7 | ;; Version: 3.12.03 |
6492fcd1 | 8 | |
271c888a | 9 | ;;; This file is part of GNU Emacs. |
6492fcd1 RS |
10 | |
11 | ;; GNU Emacs is free software; you can redistribute it and/or modify | |
12 | ;; it under the terms of the GNU General Public License as published by | |
13 | ;; the Free Software Foundation; either version 2, or (at your option) | |
14 | ;; any later version. | |
15 | ||
16 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
17 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | ;; GNU General Public License for more details. | |
20 | ||
21 | ;; You should have received a copy of the GNU General Public License | |
b578f267 EN |
22 | ;; along with GNU Emacs; see the file COPYING. If not, write to the |
23 | ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
24 | ;; Boston, MA 02111-1307, USA. | |
6492fcd1 RS |
25 | |
26 | ;;; Commentary: | |
27 | ||
098de8c9 SM |
28 | ;; Lazy 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. | |
6492fcd1 | 31 | ;; |
19f79085 | 32 | ;; See caveats and feedback below. |
6492fcd1 RS |
33 | ;; See also the lazy-lock package. (But don't use the two at the same time!) |
34 | ||
6492fcd1 RS |
35 | ;; Installation: |
36 | ;; | |
19f79085 | 37 | ;; Put in your ~/.emacs: |
6492fcd1 | 38 | ;; |
369cc657 | 39 | ;; (setq font-lock-support-mode 'fast-lock-mode) |
6492fcd1 RS |
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 | |
19f79085 SM |
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: | |
6492fcd1 | 49 | ;; |
19f79085 SM |
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++. | |
6492fcd1 | 52 | ;; |
19f79085 SM |
53 | ;; Version control packages are likely to stamp all over file modification |
54 | ;; times. Therefore the act of checking out may invalidate a cache. | |
6492fcd1 | 55 | \f |
fc8d5601 SM |
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: | |
147 | ;; - Made `fast-lock-save-cache' cope if `fast-lock-minimum-size' is an a list | |
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) | |
3bef4cbd SM |
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 | |
fc8d5601 | 175 | \f |
098de8c9 SM |
176 | ;;; Code: |
177 | ||
6492fcd1 RS |
178 | (require 'font-lock) |
179 | ||
369cc657 SM |
180 | ;; Make sure fast-lock.el is supported. |
181 | (if (and (eq system-type 'ms-dos) (not (msdos-long-file-names))) | |
182 | (error "`fast-lock' was written for long file name systems")) | |
183 | ||
6492fcd1 | 184 | (eval-when-compile |
369cc657 SM |
185 | ;; |
186 | ;; We don't do this at the top-level as we only use non-autoloaded macros. | |
fc8d5601 SM |
187 | (require 'cl) |
188 | ;; | |
189 | ;; We use this to preserve or protect things when modifying text properties. | |
190 | (defmacro save-buffer-state (varlist &rest body) | |
191 | "Bind variables according to VARLIST and eval BODY restoring buffer state." | |
192 | (` (let* ((,@ (append varlist | |
193 | '((modified (buffer-modified-p)) (buffer-undo-list t) | |
194 | (inhibit-read-only t) (inhibit-point-motion-hooks t) | |
195 | before-change-functions after-change-functions | |
196 | deactivate-mark buffer-file-name buffer-file-truename)))) | |
197 | (,@ body) | |
198 | (when (and (not modified) (buffer-modified-p)) | |
199 | (set-buffer-modified-p nil))))) | |
200 | (put 'save-buffer-state 'lisp-indent-function 1) | |
201 | ;; | |
202 | ;; We use this to verify that a face should be saved. | |
203 | (defmacro fast-lock-save-facep (face) | |
204 | "Return non-nil if FACE is one of `fast-lock-save-faces'." | |
205 | (` (or (null fast-lock-save-faces) | |
206 | (if (symbolp (, face)) | |
207 | (memq (, face) fast-lock-save-faces) | |
208 | (let ((faces (, face))) | |
209 | (while (unless (memq (car faces) fast-lock-save-faces) | |
210 | (setq faces (cdr faces)))) | |
211 | faces))))) | |
212 | ;; | |
213 | ;; We use this for compatibility with a future Emacs. | |
214 | (or (fboundp 'defcustom) | |
215 | (defmacro defcustom (symbol value doc &rest args) | |
216 | (` (defvar (, symbol) (, value) (, doc)))))) | |
098de8c9 SM |
217 | |
218 | ;(defun fast-lock-submit-bug-report () | |
219 | ; "Submit via mail a bug report on fast-lock.el." | |
220 | ; (interactive) | |
221 | ; (let ((reporter-prompt-for-summary-p t)) | |
0ceb91c1 | 222 | ; (reporter-submit-bug-report "simon@gnu.ai.mit.edu" "fast-lock 3.12.03" |
098de8c9 SM |
223 | ; '(fast-lock-cache-directories fast-lock-minimum-size |
224 | ; fast-lock-save-others fast-lock-save-events fast-lock-save-faces | |
225 | ; fast-lock-verbose) | |
226 | ; nil nil | |
227 | ; (concat "Hi Si., | |
228 | ; | |
229 | ;I want to report a bug. I've read the `Bugs' section of `Info' on Emacs, so I | |
230 | ;know how to make a clear and unambiguous report. To reproduce the bug: | |
231 | ; | |
232 | ;Start a fresh editor via `" invocation-name " -no-init-file -no-site-file'. | |
233 | ;In the `*scratch*' buffer, evaluate:")))) | |
19f79085 | 234 | |
caf1765c SM |
235 | (defvar fast-lock-mode nil) ; Whether we are turned on. |
236 | (defvar fast-lock-cache-timestamp nil) ; For saving/reading. | |
237 | (defvar fast-lock-cache-filename nil) ; For deleting. | |
19f79085 SM |
238 | \f |
239 | ;; User Variables: | |
6492fcd1 | 240 | |
0ceb91c1 SM |
241 | (defcustom fast-lock-minimum-size (* 25 1024) |
242 | "*Minimum size of a buffer for cached fontification. | |
243 | Only buffers more than this can have associated Font Lock cache files saved. | |
244 | If nil, means cache files are never created. | |
245 | If a list, each element should be a cons pair of the form (MAJOR-MODE . SIZE), | |
246 | where MAJOR-MODE is a symbol or t (meaning the default). For example: | |
247 | ((c-mode . 25600) (c++-mode . 25600) (rmail-mode . 1048576)) | |
248 | means that the minimum size is 25K for buffers in C or C++ modes, one megabyte | |
249 | for buffers in Rmail mode, and size is irrelevant otherwise." | |
250 | :type '(choice (const :tag "none" nil) | |
251 | (integer :tag "size") | |
252 | (repeat :menu-tag "mode specific" :tag "mode specific" | |
253 | :value ((t . nil)) | |
254 | (cons :tag "Instance" | |
255 | (radio :tag "Mode" | |
256 | (const :tag "all" t) | |
257 | (symbol :tag "name")) | |
258 | (radio :tag "Size" | |
259 | (const :tag "none" nil) | |
260 | (integer :tag "size"))))) | |
261 | :group 'fast-lock) | |
262 | ||
ded3e3d8 | 263 | (defcustom fast-lock-cache-directories '("." "~/.emacs-flc") |
19f79085 SM |
264 | ; - `internal', keep each file's Font Lock cache file in the same file. |
265 | ; - `external', keep each file's Font Lock cache file in the same directory. | |
369cc657 | 266 | "*Directories in which Font Lock cache files are saved and read. |
6492fcd1 RS |
267 | Each item should be either DIR or a cons pair of the form (REGEXP . DIR) where |
268 | DIR is a directory name (relative or absolute) and REGEXP is a regexp. | |
269 | ||
19f79085 | 270 | An attempt will be made to save or read Font Lock cache files using these items |
6492fcd1 RS |
271 | until one succeeds (i.e., until a readable or writable one is found). If an |
272 | item contains REGEXP, DIR is used only if the buffer file name matches REGEXP. | |
273 | For example: | |
274 | ||
ebdee0a0 SM |
275 | (let ((home (expand-file-name (abbreviate-file-name (file-truename \"~/\"))))) |
276 | (list (cons (concat \"^\" (regexp-quote home)) \".\") \"~/.emacs-flc\")) | |
277 | => | |
278 | ((\"^/your/true/home/directory/\" . \".\") \"~/.emacs-flc\") | |
6492fcd1 RS |
279 | |
280 | would cause a file's current directory to be used if the file is under your | |
ded3e3d8 | 281 | home directory hierarchy, or otherwise the absolute directory `~/.emacs-flc'." |
fc8d5601 SM |
282 | :type '(repeat (radio (directory :tag "directory") |
283 | (cons :tag "Matching" | |
b34aa0a3 | 284 | (regexp :tag "regexp") |
fc8d5601 | 285 | (directory :tag "directory")))) |
ded3e3d8 | 286 | :group 'fast-lock) |
6492fcd1 | 287 | |
ded3e3d8 | 288 | (defcustom fast-lock-save-events '(kill-buffer kill-emacs) |
369cc657 | 289 | "*Events under which caches will be saved. |
19f79085 SM |
290 | Valid events are `save-buffer', `kill-buffer' and `kill-emacs'. |
291 | If concurrent editing sessions use the same associated cache file for a file's | |
ded3e3d8 | 292 | buffer, then you should add `save-buffer' to this list." |
b34aa0a3 SM |
293 | :type '(set (const :tag "buffer saving" save-buffer) |
294 | (const :tag "buffer killing" kill-buffer) | |
295 | (const :tag "emacs killing" kill-emacs)) | |
ded3e3d8 | 296 | :group 'fast-lock) |
6492fcd1 | 297 | |
ded3e3d8 | 298 | (defcustom fast-lock-save-others t |
369cc657 | 299 | "*If non-nil, save Font Lock cache files irrespective of file owner. |
19f79085 | 300 | If nil, means only buffer files known to be owned by you can have associated |
ded3e3d8 RS |
301 | Font Lock cache files saved. Ownership may be unknown for networked files." |
302 | :type 'boolean | |
303 | :group 'fast-lock) | |
19f79085 | 304 | |
caf1765c SM |
305 | (defcustom fast-lock-verbose font-lock-verbose |
306 | "*If non-nil, means show status messages for cache processing. | |
307 | If a number, only buffers greater than this size have processing messages." | |
b34aa0a3 SM |
308 | :type '(choice (const :tag "never" nil) |
309 | (const :tag "always" t) | |
310 | (integer :tag "size")) | |
caf1765c SM |
311 | :group 'fast-lock) |
312 | ||
19f79085 | 313 | (defvar fast-lock-save-faces |
369cc657 SM |
314 | (when (save-match-data (string-match "XEmacs" (emacs-version))) |
315 | ;; XEmacs uses extents for everything, so we have to pick the right ones. | |
316 | font-lock-face-list) | |
317 | "Faces that will be saved in a Font Lock cache file. | |
19f79085 | 318 | If nil, means information for all faces will be saved.") |
6492fcd1 | 319 | \f |
19f79085 | 320 | ;; User Functions: |
6492fcd1 | 321 | |
19f79085 | 322 | ;;;###autoload |
6492fcd1 RS |
323 | (defun fast-lock-mode (&optional arg) |
324 | "Toggle Fast Lock mode. | |
325 | With arg, turn Fast Lock mode on if and only if arg is positive and the buffer | |
19f79085 SM |
326 | is associated with a file. Enable it automatically in your `~/.emacs' by: |
327 | ||
369cc657 | 328 | (setq font-lock-support-mode 'fast-lock-mode) |
6492fcd1 RS |
329 | |
330 | If Fast Lock mode is enabled, and the current buffer does not contain any text | |
19f79085 SM |
331 | properties, any associated Font Lock cache is used if its timestamp matches the |
332 | buffer's file, and its `font-lock-keywords' match those that you are using. | |
333 | ||
334 | Font Lock caches may be saved: | |
098de8c9 SM |
335 | - When you save the file's buffer. |
336 | - When you kill an unmodified file's buffer. | |
337 | - When you exit Emacs, for all unmodified or saved buffers. | |
19f79085 SM |
338 | Depending on the value of `fast-lock-save-events'. |
339 | See also the commands `fast-lock-read-cache' and `fast-lock-save-cache'. | |
6492fcd1 | 340 | |
19f79085 | 341 | Use \\[font-lock-fontify-buffer] to fontify the buffer if the cache is bad. |
6492fcd1 | 342 | |
19f79085 | 343 | Various methods of control are provided for the Font Lock cache. In general, |
6492fcd1 | 344 | see variable `fast-lock-cache-directories' and function `fast-lock-cache-name'. |
19f79085 | 345 | For saving, see variables `fast-lock-minimum-size', `fast-lock-save-events', |
098de8c9 | 346 | `fast-lock-save-others' and `fast-lock-save-faces'." |
6492fcd1 | 347 | (interactive "P") |
9ebfa5ef SM |
348 | ;; Only turn on if we are visiting a file. We could use `buffer-file-name', |
349 | ;; but many packages temporarily wrap that to nil when doing their own thing. | |
6492fcd1 | 350 | (set (make-local-variable 'fast-lock-mode) |
ebdee0a0 | 351 | (and buffer-file-truename |
271c888a | 352 | (not (memq 'fast-lock-mode font-lock-inhibit-thing-lock)) |
6492fcd1 | 353 | (if arg (> (prefix-numeric-value arg) 0) (not fast-lock-mode)))) |
19f79085 | 354 | (if (and fast-lock-mode (not font-lock-mode)) |
369cc657 SM |
355 | ;; Turned on `fast-lock-mode' rather than `font-lock-mode'. |
356 | (let ((font-lock-support-mode 'fast-lock-mode)) | |
ebdee0a0 | 357 | (font-lock-mode t)) |
19f79085 SM |
358 | ;; Let's get down to business. |
359 | (set (make-local-variable 'fast-lock-cache-timestamp) nil) | |
360 | (set (make-local-variable 'fast-lock-cache-filename) nil) | |
369cc657 SM |
361 | (when (and fast-lock-mode (not font-lock-fontified)) |
362 | (fast-lock-read-cache)))) | |
6492fcd1 RS |
363 | |
364 | (defun fast-lock-read-cache () | |
19f79085 | 365 | "Read the Font Lock cache for the current buffer. |
6492fcd1 | 366 | |
19f79085 | 367 | The following criteria must be met for a Font Lock cache file to be read: |
098de8c9 SM |
368 | - Fast Lock mode must be turned on in the buffer. |
369 | - The buffer must not be modified. | |
370 | - The buffer's `font-lock-keywords' must match the cache's. | |
371 | - The buffer file's timestamp must match the cache's. | |
372 | - Criteria imposed by `fast-lock-cache-directories'. | |
6492fcd1 | 373 | |
19f79085 | 374 | See `fast-lock-mode'." |
6492fcd1 | 375 | (interactive) |
19f79085 SM |
376 | (let ((directories fast-lock-cache-directories) |
377 | (modified (buffer-modified-p)) (inhibit-read-only t) | |
6492fcd1 RS |
378 | (fontified font-lock-fontified)) |
379 | (set (make-local-variable 'font-lock-fontified) nil) | |
380 | ;; Keep trying directories until fontification is turned off. | |
381 | (while (and directories (not font-lock-fontified)) | |
9ebfa5ef | 382 | (let ((directory (fast-lock-cache-directory (car directories) nil))) |
369cc657 SM |
383 | (condition-case nil |
384 | (when directory | |
385 | (setq fast-lock-cache-filename (fast-lock-cache-name directory)) | |
386 | (when (file-readable-p fast-lock-cache-filename) | |
387 | (load fast-lock-cache-filename t t t))) | |
388 | (error nil) (quit nil)) | |
19f79085 | 389 | (setq directories (cdr directories)))) |
9ebfa5ef SM |
390 | ;; Unset `fast-lock-cache-filename', and restore `font-lock-fontified', if |
391 | ;; we don't use a cache. (Note that `fast-lock-cache-data' sets the value | |
392 | ;; of `fast-lock-cache-timestamp'.) | |
6492fcd1 | 393 | (set-buffer-modified-p modified) |
369cc657 SM |
394 | (unless font-lock-fontified |
395 | (setq fast-lock-cache-filename nil font-lock-fontified fontified)))) | |
6492fcd1 RS |
396 | |
397 | (defun fast-lock-save-cache (&optional buffer) | |
19f79085 | 398 | "Save the Font Lock cache of BUFFER or the current buffer. |
6492fcd1 | 399 | |
19f79085 | 400 | The following criteria must be met for a Font Lock cache file to be saved: |
098de8c9 SM |
401 | - Fast Lock mode must be turned on in the buffer. |
402 | - The event must be one of `fast-lock-save-events'. | |
403 | - The buffer must be at least `fast-lock-minimum-size' bytes long. | |
404 | - The buffer file must be owned by you, or `fast-lock-save-others' must be t. | |
405 | - The buffer must contain at least one `face' text property. | |
406 | - The buffer must not be modified. | |
407 | - The buffer file's timestamp must be the same as the file's on disk. | |
408 | - The on disk file's timestamp must be different than the buffer's cache. | |
409 | - Criteria imposed by `fast-lock-cache-directories'. | |
6492fcd1 | 410 | |
19f79085 | 411 | See `fast-lock-mode'." |
6492fcd1 | 412 | (interactive) |
19f79085 | 413 | (save-excursion |
369cc657 SM |
414 | (when buffer |
415 | (set-buffer buffer)) | |
416 | (let ((min-size (font-lock-value-in-major-mode fast-lock-minimum-size)) | |
271c888a | 417 | (file-timestamp (visited-file-modtime)) (saved nil)) |
369cc657 SM |
418 | (when (and fast-lock-mode |
419 | ;; | |
420 | ;; "Only save if the buffer matches the file, the file has | |
421 | ;; changed, and it was changed by the current emacs session." | |
422 | ;; | |
423 | ;; Only save if the buffer is not modified, | |
424 | ;; (i.e., so we don't save for something not on disk) | |
425 | (not (buffer-modified-p)) | |
426 | ;; and the file's timestamp is the same as the buffer's, | |
427 | ;; (i.e., someone else hasn't written the file in the meantime) | |
428 | (verify-visited-file-modtime (current-buffer)) | |
429 | ;; and the file's timestamp is different from the cache's. | |
430 | ;; (i.e., a save has occurred since the cache was read) | |
431 | (not (equal fast-lock-cache-timestamp file-timestamp)) | |
432 | ;; | |
433 | ;; Only save if user's restrictions are satisfied. | |
434 | (and min-size (>= (buffer-size) min-size)) | |
435 | (or fast-lock-save-others | |
436 | (eq (user-uid) (nth 2 (file-attributes buffer-file-name)))) | |
437 | ;; | |
438 | ;; Only save if there are `face' properties to save. | |
439 | (text-property-not-all (point-min) (point-max) 'face nil)) | |
440 | ;; | |
441 | ;; Try each directory until we manage to save or the user quits. | |
442 | (let ((directories fast-lock-cache-directories)) | |
443 | (while (and directories (memq saved '(nil error))) | |
444 | (let* ((dir (fast-lock-cache-directory (car directories) t)) | |
445 | (file (and dir (fast-lock-cache-name dir)))) | |
446 | (when (and file (file-writable-p file)) | |
447 | (setq saved (fast-lock-save-cache-1 file file-timestamp))) | |
448 | (setq directories (cdr directories))))))))) | |
19f79085 SM |
449 | |
450 | ;;;###autoload | |
6492fcd1 RS |
451 | (defun turn-on-fast-lock () |
452 | "Unconditionally turn on Fast Lock mode." | |
ebdee0a0 | 453 | (fast-lock-mode t)) |
19f79085 SM |
454 | \f |
455 | ;;; API Functions: | |
456 | ||
457 | (defun fast-lock-after-fontify-buffer () | |
458 | ;; Delete the Font Lock cache file used to restore fontification, if any. | |
369cc657 SM |
459 | (when fast-lock-cache-filename |
460 | (if (file-writable-p fast-lock-cache-filename) | |
461 | (delete-file fast-lock-cache-filename) | |
462 | (message "File %s font lock cache cannot be deleted" (buffer-name)))) | |
19f79085 SM |
463 | ;; Flag so that a cache will be saved later even if the file is never saved. |
464 | (setq fast-lock-cache-timestamp nil)) | |
271c888a SM |
465 | |
466 | (defalias 'fast-lock-after-unfontify-buffer | |
467 | 'ignore) | |
19f79085 SM |
468 | \f |
469 | ;; Miscellaneous Functions: | |
470 | ||
369cc657 | 471 | (defun fast-lock-save-cache-after-save-file () |
19f79085 | 472 | ;; Do `fast-lock-save-cache' if `save-buffer' is on `fast-lock-save-events'. |
369cc657 SM |
473 | (when (memq 'save-buffer fast-lock-save-events) |
474 | (fast-lock-save-cache))) | |
19f79085 | 475 | |
369cc657 | 476 | (defun fast-lock-save-cache-before-kill-buffer () |
19f79085 | 477 | ;; Do `fast-lock-save-cache' if `kill-buffer' is on `fast-lock-save-events'. |
369cc657 SM |
478 | (when (memq 'kill-buffer fast-lock-save-events) |
479 | (fast-lock-save-cache))) | |
6492fcd1 | 480 | |
369cc657 | 481 | (defun fast-lock-save-caches-before-kill-emacs () |
19f79085 | 482 | ;; Do `fast-lock-save-cache's if `kill-emacs' is on `fast-lock-save-events'. |
369cc657 SM |
483 | (when (memq 'kill-emacs fast-lock-save-events) |
484 | (mapcar 'fast-lock-save-cache (buffer-list)))) | |
6492fcd1 RS |
485 | |
486 | (defun fast-lock-cache-directory (directory create) | |
487 | "Return usable directory based on DIRECTORY. | |
488 | Returns nil if the directory does not exist, or, if CREATE non-nil, cannot be | |
489 | created. DIRECTORY may be a string or a cons pair of the form (REGEXP . DIR). | |
490 | See `fast-lock-cache-directories'." | |
19f79085 SM |
491 | (let ((dir |
492 | (cond ((not buffer-file-name) | |
493 | ;; Should never be nil, but `crypt++' screws it up. | |
494 | nil) | |
495 | ((stringp directory) | |
496 | ;; Just a directory. | |
497 | directory) | |
498 | (t | |
499 | ;; A directory iff the file name matches the regexp. | |
500 | (let ((bufile (expand-file-name buffer-file-truename)) | |
501 | (case-fold-search nil)) | |
369cc657 SM |
502 | (when (save-match-data (string-match (car directory) bufile)) |
503 | (cdr directory))))))) | |
6492fcd1 RS |
504 | (cond ((not dir) |
505 | nil) | |
19f79085 SM |
506 | ((file-accessible-directory-p dir) |
507 | dir) | |
508 | (create | |
509 | (condition-case nil | |
510 | (progn (make-directory dir t) dir) | |
511 | (error nil)))))) | |
6492fcd1 | 512 | |
ebdee0a0 SM |
513 | ;; If you are wondering why we only hash if the directory is not ".", rather |
514 | ;; than if `file-name-absolute-p', it is because if we just appended ".flc" for | |
515 | ;; relative cache directories (that are not ".") then it is possible that more | |
516 | ;; than one file would have the same cache name in that directory, if the luser | |
517 | ;; made a link from one relative cache directory to another. (Phew!) | |
6492fcd1 RS |
518 | (defun fast-lock-cache-name (directory) |
519 | "Return full cache path name using caching DIRECTORY. | |
520 | If DIRECTORY is `.', the path is the buffer file name appended with `.flc'. | |
521 | Otherwise, the path name is constructed from DIRECTORY and the buffer's true | |
522 | abbreviated file name, with all `/' characters in the name replaced with `#' | |
523 | characters, and appended with `.flc'. | |
524 | ||
ebdee0a0 SM |
525 | If the same file has different cache path names when edited on different |
526 | machines, e.g., on one machine the cache file name has the prefix `#home', | |
527 | perhaps due to automount, try putting in your `~/.emacs' something like: | |
528 | ||
529 | (setq directory-abbrev-alist (cons '(\"^/home/\" . \"/\") directory-abbrev-alist)) | |
530 | ||
531 | Emacs automagically removes the common `/tmp_mnt' automount prefix by default. | |
532 | ||
533 | See `fast-lock-cache-directory'." | |
6492fcd1 RS |
534 | (if (string-equal directory ".") |
535 | (concat buffer-file-name ".flc") | |
19f79085 | 536 | (let* ((bufile (expand-file-name buffer-file-truename)) |
6492fcd1 RS |
537 | (chars-alist |
538 | (if (eq system-type 'emx) | |
539 | '((?/ . (?#)) (?# . (?# ?#)) (?: . (?\;)) (?\; . (?\; ?\;))) | |
540 | '((?/ . (?#)) (?# . (?# ?#))))) | |
541 | (mapchars | |
542 | (function (lambda (c) (or (cdr (assq c chars-alist)) (list c)))))) | |
543 | (concat | |
544 | (file-name-as-directory (expand-file-name directory)) | |
545 | (mapconcat 'char-to-string (apply 'append (mapcar mapchars bufile)) "") | |
546 | ".flc")))) | |
547 | \f | |
19f79085 SM |
548 | ;; Font Lock Cache Processing Functions: |
549 | ||
3bef4cbd SM |
550 | ;; The version 3 format of the cache is: |
551 | ;; | |
552 | ;; (fast-lock-cache-data VERSION TIMESTAMP | |
553 | ;; font-lock-syntactic-keywords SYNTACTIC-PROPERTIES | |
554 | ;; font-lock-keywords FACE-PROPERTIES) | |
555 | ||
19f79085 | 556 | (defun fast-lock-save-cache-1 (file timestamp) |
3bef4cbd | 557 | ;; Save the FILE with the TIMESTAMP plus fontification data. |
19f79085 SM |
558 | ;; Returns non-nil if a save was attempted to a writable cache file. |
559 | (let ((tpbuf (generate-new-buffer " *fast-lock*")) | |
098de8c9 SM |
560 | (verbose (if (numberp fast-lock-verbose) |
561 | (> (buffer-size) fast-lock-verbose) | |
562 | fast-lock-verbose)) | |
563 | (saved t)) | |
564 | (if verbose (message "Saving %s font lock cache..." (buffer-name))) | |
19f79085 SM |
565 | (condition-case nil |
566 | (save-excursion | |
3bef4cbd | 567 | (print (list 'fast-lock-cache-data 3 |
19f79085 | 568 | (list 'quote timestamp) |
3bef4cbd SM |
569 | (list 'quote font-lock-syntactic-keywords) |
570 | (list 'quote (fast-lock-get-syntactic-properties)) | |
19f79085 SM |
571 | (list 'quote font-lock-keywords) |
572 | (list 'quote (fast-lock-get-face-properties))) | |
573 | tpbuf) | |
574 | (set-buffer tpbuf) | |
575 | (write-region (point-min) (point-max) file nil 'quietly) | |
576 | (setq fast-lock-cache-timestamp timestamp | |
577 | fast-lock-cache-filename file)) | |
578 | (error (setq saved 'error)) (quit (setq saved 'quit))) | |
579 | (kill-buffer tpbuf) | |
098de8c9 SM |
580 | (if verbose (message "Saving %s font lock cache...%s" (buffer-name) |
581 | (cond ((eq saved 'error) "failed") | |
582 | ((eq saved 'quit) "aborted") | |
583 | (t "done")))) | |
19f79085 SM |
584 | ;; We return non-nil regardless of whether a failure occurred. |
585 | saved)) | |
6492fcd1 | 586 | |
3bef4cbd SM |
587 | (defun fast-lock-cache-data (version timestamp |
588 | syntactic-keywords syntactic-properties | |
589 | keywords face-properties | |
6492fcd1 | 590 | &rest ignored) |
3bef4cbd SM |
591 | ;; Find value of syntactic keywords in case it is a symbol. |
592 | (setq font-lock-syntactic-keywords (font-lock-eval-keywords | |
593 | font-lock-syntactic-keywords)) | |
594 | ;; Compile all keywords in case some are and some aren't. | |
595 | (setq font-lock-syntactic-keywords (font-lock-compile-keywords | |
596 | font-lock-syntactic-keywords) | |
597 | syntactic-keywords (font-lock-compile-keywords syntactic-keywords) | |
598 | ||
599 | font-lock-keywords (font-lock-compile-keywords font-lock-keywords) | |
caf1765c | 600 | keywords (font-lock-compile-keywords keywords)) |
3bef4cbd SM |
601 | ;; Use the Font Lock cache SYNTACTIC-PROPERTIES and FACE-PROPERTIES if we're |
602 | ;; using cache VERSION format 3, the current buffer's file timestamp matches | |
603 | ;; the TIMESTAMP, the current buffer's `font-lock-syntactic-keywords' are the | |
604 | ;; same as SYNTACTIC-KEYWORDS, and the current buffer's `font-lock-keywords' | |
605 | ;; are the same as KEYWORDS. | |
19f79085 | 606 | (let ((buf-timestamp (visited-file-modtime)) |
098de8c9 SM |
607 | (verbose (if (numberp fast-lock-verbose) |
608 | (> (buffer-size) fast-lock-verbose) | |
609 | fast-lock-verbose)) | |
610 | (loaded t)) | |
3bef4cbd | 611 | (if (or (/= version 3) |
19f79085 | 612 | (buffer-modified-p) |
6492fcd1 | 613 | (not (equal timestamp buf-timestamp)) |
3bef4cbd | 614 | (not (equal syntactic-keywords font-lock-syntactic-keywords)) |
6492fcd1 RS |
615 | (not (equal keywords font-lock-keywords))) |
616 | (setq loaded nil) | |
098de8c9 | 617 | (if verbose (message "Loading %s font lock cache..." (buffer-name))) |
6492fcd1 | 618 | (condition-case nil |
3bef4cbd | 619 | (fast-lock-add-properties syntactic-properties face-properties) |
19f79085 | 620 | (error (setq loaded 'error)) (quit (setq loaded 'quit))) |
098de8c9 SM |
621 | (if verbose (message "Loading %s font lock cache...%s" (buffer-name) |
622 | (cond ((eq loaded 'error) "failed") | |
623 | ((eq loaded 'quit) "aborted") | |
624 | (t "done"))))) | |
19f79085 | 625 | (setq font-lock-fontified (eq loaded t) |
9ebfa5ef | 626 | fast-lock-cache-timestamp (and (eq loaded t) timestamp)))) |
19f79085 SM |
627 | \f |
628 | ;; Text Properties Processing Functions: | |
629 | ||
098de8c9 | 630 | ;; This is fast, but fails if adjacent characters have different `face' text |
19f79085 SM |
631 | ;; properties. Maybe that's why I dropped it in the first place? |
632 | ;(defun fast-lock-get-face-properties () | |
3bef4cbd | 633 | ; "Return a list of `face' text properties in the current buffer. |
19f79085 SM |
634 | ;Each element of the list is of the form (VALUE START1 END1 START2 END2 ...) |
635 | ;where VALUE is a `face' property value and STARTx and ENDx are positions." | |
636 | ; (save-restriction | |
637 | ; (widen) | |
638 | ; (let ((start (text-property-not-all (point-min) (point-max) 'face nil)) | |
639 | ; (limit (point-max)) end properties value cell) | |
640 | ; (while start | |
641 | ; (setq end (next-single-property-change start 'face nil limit) | |
642 | ; value (get-text-property start 'face)) | |
643 | ; ;; Make, or add to existing, list of regions with same `face'. | |
644 | ; (if (setq cell (assq value properties)) | |
645 | ; (setcdr cell (cons start (cons end (cdr cell)))) | |
646 | ; (setq properties (cons (list value start end) properties))) | |
647 | ; (setq start (next-single-property-change end 'face))) | |
648 | ; properties))) | |
649 | ||
098de8c9 SM |
650 | ;; This is slow, but copes if adjacent characters have different `face' text |
651 | ;; properties, but fails if they are lists. | |
652 | ;(defun fast-lock-get-face-properties () | |
3bef4cbd | 653 | ; "Return a list of `face' text properties in the current buffer. |
098de8c9 SM |
654 | ;Each element of the list is of the form (VALUE START1 END1 START2 END2 ...) |
655 | ;where VALUE is a `face' property value and STARTx and ENDx are positions. | |
656 | ;Only those `face' VALUEs in `fast-lock-save-faces' are returned." | |
657 | ; (save-restriction | |
658 | ; (widen) | |
659 | ; (let ((faces (or fast-lock-save-faces (face-list))) (limit (point-max)) | |
660 | ; properties regions face start end) | |
661 | ; (while faces | |
662 | ; (setq face (car faces) faces (cdr faces) regions () end (point-min)) | |
663 | ; ;; Make a list of start/end regions with `face' property face. | |
664 | ; (while (setq start (text-property-any end limit 'face face)) | |
665 | ; (setq end (or (text-property-not-all start limit 'face face) limit) | |
666 | ; regions (cons start (cons end regions)))) | |
667 | ; ;; Add `face' face's regions, if any, to properties. | |
668 | ; (when regions | |
669 | ; (push (cons face regions) properties))) | |
670 | ; properties))) | |
671 | ||
19f79085 | 672 | (defun fast-lock-get-face-properties () |
3bef4cbd | 673 | "Return a list of `face' text properties in the current buffer. |
6492fcd1 | 674 | Each element of the list is of the form (VALUE START1 END1 START2 END2 ...) |
098de8c9 | 675 | where VALUE is a `face' property value and STARTx and ENDx are positions." |
19f79085 SM |
676 | (save-restriction |
677 | (widen) | |
098de8c9 SM |
678 | (let ((start (text-property-not-all (point-min) (point-max) 'face nil)) |
679 | end properties value cell) | |
680 | (while start | |
681 | (setq end (next-single-property-change start 'face nil (point-max)) | |
682 | value (get-text-property start 'face)) | |
683 | ;; Make, or add to existing, list of regions with same `face'. | |
684 | (cond ((setq cell (assoc value properties)) | |
685 | (setcdr cell (cons start (cons end (cdr cell))))) | |
686 | ((fast-lock-save-facep value) | |
687 | (push (list value start end) properties))) | |
688 | (setq start (text-property-not-all end (point-max) 'face nil))) | |
19f79085 SM |
689 | properties))) |
690 | ||
3bef4cbd SM |
691 | (defun fast-lock-get-syntactic-properties () |
692 | "Return a list of `syntax-table' text properties in the current buffer. | |
693 | See `fast-lock-get-face-properties'." | |
694 | (save-restriction | |
695 | (widen) | |
696 | (let ((start (text-property-not-all (point-min) (point-max) 'syntax-table | |
697 | nil)) | |
698 | end properties value cell) | |
699 | (while start | |
700 | (setq end (next-single-property-change start 'syntax-table nil | |
701 | (point-max)) | |
702 | value (get-text-property start 'syntax-table)) | |
703 | ;; Make, or add to existing, list of regions with same `syntax-table'. | |
704 | (if (setq cell (assoc value properties)) | |
705 | (setcdr cell (cons start (cons end (cdr cell)))) | |
706 | (push (list value start end) properties)) | |
707 | (setq start (text-property-not-all end (point-max) 'syntax-table nil))) | |
708 | properties))) | |
709 | ||
710 | (defun fast-lock-add-properties (syntactic-properties face-properties) | |
711 | "Add `syntax-table' and `face' text properties to the current buffer. | |
712 | Any existing `syntax-table' and `face' text properties are removed first. | |
713 | See `fast-lock-get-face-properties'." | |
369cc657 SM |
714 | (save-buffer-state (plist regions) |
715 | (save-restriction | |
716 | (widen) | |
717 | (font-lock-unfontify-region (point-min) (point-max)) | |
3bef4cbd SM |
718 | ;; |
719 | ;; Set the `syntax-table' property for each start/end region. | |
720 | (while syntactic-properties | |
721 | (setq plist (list 'syntax-table (car (car syntactic-properties))) | |
722 | regions (cdr (car syntactic-properties)) | |
723 | syntactic-properties (cdr syntactic-properties)) | |
724 | (while regions | |
725 | (add-text-properties (nth 0 regions) (nth 1 regions) plist) | |
726 | (setq regions (nthcdr 2 regions)))) | |
727 | ;; | |
728 | ;; Set the `face' property for each start/end region. | |
729 | (while face-properties | |
730 | (setq plist (list 'face (car (car face-properties))) | |
731 | regions (cdr (car face-properties)) | |
732 | face-properties (cdr face-properties)) | |
19f79085 | 733 | (while regions |
3bef4cbd | 734 | (add-text-properties (nth 0 regions) (nth 1 regions) plist) |
369cc657 | 735 | (setq regions (nthcdr 2 regions))))))) |
6492fcd1 | 736 | \f |
19f79085 | 737 | ;; Functions for XEmacs: |
6492fcd1 | 738 | |
369cc657 SM |
739 | (when (save-match-data (string-match "XEmacs" (emacs-version))) |
740 | ;; | |
741 | ;; It would be better to use XEmacs' `map-extents' over extents with a | |
742 | ;; `font-lock' property, but `face' properties are on different extents. | |
743 | (defun fast-lock-get-face-properties () | |
3bef4cbd | 744 | "Return a list of `face' text properties in the current buffer. |
6492fcd1 | 745 | Each element of the list is of the form (VALUE START1 END1 START2 END2 ...) |
19f79085 SM |
746 | where VALUE is a `face' property value and STARTx and ENDx are positions. |
747 | Only those `face' VALUEs in `fast-lock-save-faces' are returned." | |
369cc657 SM |
748 | (save-restriction |
749 | (widen) | |
750 | (let ((properties ()) cell) | |
751 | (map-extents | |
752 | (function (lambda (extent ignore) | |
753 | (let ((value (extent-face extent))) | |
754 | ;; We're only interested if it's one of `fast-lock-save-faces'. | |
098de8c9 | 755 | (when (and value (fast-lock-save-facep value)) |
369cc657 SM |
756 | (let ((start (extent-start-position extent)) |
757 | (end (extent-end-position extent))) | |
758 | ;; Make or add to existing list of regions with the same | |
759 | ;; `face' property value. | |
098de8c9 | 760 | (if (setq cell (assoc value properties)) |
369cc657 SM |
761 | (setcdr cell (cons start (cons end (cdr cell)))) |
762 | (push (list value start end) properties)))) | |
763 | ;; Return nil to keep `map-extents' going. | |
764 | nil)))) | |
765 | properties))) | |
766 | ;; | |
3bef4cbd SM |
767 | ;; XEmacs does not support the `syntax-table' text property. |
768 | (defalias 'fast-lock-get-syntactic-properties | |
769 | 'ignore) | |
770 | ;; | |
369cc657 | 771 | ;; Make extents just like XEmacs' font-lock.el does. |
3bef4cbd SM |
772 | (defun fast-lock-add-properties (syntactic-properties face-properties) |
773 | "Set `face' text properties in the current buffer. | |
19f79085 | 774 | Any existing `face' text properties are removed first. |
3bef4cbd | 775 | See `fast-lock-get-face-properties'." |
369cc657 SM |
776 | (save-restriction |
777 | (widen) | |
778 | (font-lock-unfontify-region (point-min) (point-max)) | |
3bef4cbd SM |
779 | ;; Set the `face' property, etc., for each start/end region. |
780 | (while face-properties | |
781 | (let ((face (car (car face-properties))) | |
782 | (regions (cdr (car face-properties)))) | |
369cc657 SM |
783 | (while regions |
784 | (font-lock-set-face (nth 0 regions) (nth 1 regions) face) | |
785 | (setq regions (nthcdr 2 regions))) | |
3bef4cbd SM |
786 | (setq face-properties (cdr face-properties)))) |
787 | ;; XEmacs does not support the `syntax-table' text property. | |
788 | )) | |
369cc657 SM |
789 | ;; |
790 | ;; XEmacs 19.12 font-lock.el's `font-lock-fontify-buffer' runs a hook. | |
791 | (add-hook 'font-lock-after-fontify-buffer-hook | |
792 | 'fast-lock-after-fontify-buffer)) | |
793 | ||
3bef4cbd SM |
794 | (unless (boundp 'font-lock-syntactic-keywords) |
795 | (defvar font-lock-syntactic-keywords nil)) | |
796 | ||
369cc657 | 797 | (unless (boundp 'font-lock-inhibit-thing-lock) |
3bef4cbd SM |
798 | (defvar font-lock-inhibit-thing-lock nil)) |
799 | ||
800 | (unless (fboundp 'font-lock-compile-keywords) | |
801 | (defalias 'font-lock-compile-keywords 'identity)) | |
802 | ||
803 | (unless (fboundp 'font-lock-eval-keywords) | |
804 | (defun font-lock-eval-keywords (keywords) | |
805 | (if (symbolp keywords) | |
806 | (font-lock-eval-keywords (if (fboundp keywords) | |
807 | (funcall keywords) | |
808 | (eval keywords))) | |
809 | keywords))) | |
369cc657 | 810 | |
098de8c9 SM |
811 | (unless (fboundp 'font-lock-value-in-major-mode) |
812 | (defun font-lock-value-in-major-mode (alist) | |
098de8c9 SM |
813 | (if (consp alist) |
814 | (cdr (or (assq major-mode alist) (assq t alist))) | |
815 | alist))) | |
6492fcd1 RS |
816 | \f |
817 | ;; Install ourselves: | |
818 | ||
369cc657 SM |
819 | (add-hook 'after-save-hook 'fast-lock-save-cache-after-save-file) |
820 | (add-hook 'kill-buffer-hook 'fast-lock-save-cache-before-kill-buffer) | |
821 | (add-hook 'kill-emacs-hook 'fast-lock-save-caches-before-kill-emacs) | |
19f79085 | 822 | |
369cc657 | 823 | ;;;###autoload |
caf1765c SM |
824 | (when (fboundp 'add-minor-mode) |
825 | (defvar fast-lock-mode nil) | |
826 | (add-minor-mode 'fast-lock-mode nil)) | |
369cc657 SM |
827 | ;;;###dont-autoload |
828 | (unless (assq 'fast-lock-mode minor-mode-alist) | |
829 | (setq minor-mode-alist (append minor-mode-alist '((fast-lock-mode nil))))) | |
6492fcd1 | 830 | |
6492fcd1 RS |
831 | ;; Provide ourselves: |
832 | ||
833 | (provide 'fast-lock) | |
834 | ||
835 | ;;; fast-lock.el ends here |