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7840ced1 GM |
1 | ;;; jit-lock.el --- just-in-time fontification. |
2 | ||
3 | ;; Copyright (C) 1998 Free Software Foundation, Inc. | |
4 | ||
5 | ;; Author: Gerd Moellmann <gerd@gnu.org> | |
6 | ;; Keywords: faces files | |
7 | ;; Version: 1.0 | |
8 | ||
9 | ;; This file is part of GNU Emacs. | |
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 | |
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. | |
25 | ||
26 | ;;; Commentary: | |
27 | ||
28 | ;; Just-in-time fontification, triggered by C redisplay code. | |
29 | ||
30 | ;;; Code: | |
31 | ||
32 | ||
33 | (require 'font-lock) | |
34 | ||
35 | (eval-when-compile | |
60bffb78 GM |
36 | (defmacro with-buffer-unmodified (&rest body) |
37 | "Eval BODY, preserving the current buffer's modified state." | |
38 | (let ((modified (make-symbol "modified"))) | |
39 | `(let ((,modified (buffer-modified-p))) | |
be390cb3 SM |
40 | (unwind-protect |
41 | (progn ,@body) | |
42 | (unless ,modified | |
43 | (restore-buffer-modified-p nil)))))) | |
60bffb78 | 44 | |
bcacade9 | 45 | (defmacro with-buffer-prepared-for-jit-lock (&rest body) |
7840ced1 GM |
46 | "Execute BODY in current buffer, overriding several variables. |
47 | Preserves the `buffer-modified-p' state of the current buffer." | |
9f1a8fb4 GM |
48 | `(with-buffer-unmodified |
49 | (let ((buffer-undo-list t) | |
50 | (inhibit-read-only t) | |
51 | (inhibit-point-motion-hooks t) | |
bcacade9 | 52 | (inhibit-modification-hooks t) |
9f1a8fb4 GM |
53 | deactivate-mark |
54 | buffer-file-name | |
55 | buffer-file-truename) | |
56 | ,@body)))) | |
7840ced1 | 57 | |
60bffb78 | 58 | |
7840ced1 GM |
59 | \f |
60 | ;;; Customization. | |
61 | ||
62 | (defcustom jit-lock-chunk-size 500 | |
bcacade9 | 63 | "*Jit-lock chunks of this many characters, or smaller." |
7840ced1 GM |
64 | :type 'integer |
65 | :group 'jit-lock) | |
66 | ||
67 | ||
68 | (defcustom jit-lock-stealth-time 3 | |
69 | "*Time in seconds to wait before beginning stealth fontification. | |
70 | Stealth fontification occurs if there is no input within this time. | |
71 | If nil, means stealth fontification is never performed. | |
72 | ||
73 | The value of this variable is used when JIT Lock mode is turned on." | |
74 | :type '(choice (const :tag "never" nil) | |
75 | (number :tag "seconds")) | |
76 | :group 'jit-lock) | |
77 | ||
78 | ||
79 | (defcustom jit-lock-stealth-nice 0.125 | |
80 | "*Time in seconds to pause between chunks of stealth fontification. | |
81 | Each iteration of stealth fontification is separated by this amount of time, | |
82 | thus reducing the demand that stealth fontification makes on the system. | |
83 | If nil, means stealth fontification is never paused. | |
84 | To reduce machine load during stealth fontification, at the cost of stealth | |
85 | taking longer to fontify, you could increase the value of this variable. | |
86 | See also `jit-lock-stealth-load'." | |
87 | :type '(choice (const :tag "never" nil) | |
88 | (number :tag "seconds")) | |
89 | :group 'jit-lock) | |
90 | ||
91 | ||
92 | (defcustom jit-lock-stealth-load | |
93 | (if (condition-case nil (load-average) (error)) 200) | |
94 | "*Load in percentage above which stealth fontification is suspended. | |
95 | Stealth fontification pauses when the system short-term load average (as | |
96 | returned by the function `load-average' if supported) goes above this level, | |
97 | thus reducing the demand that stealth fontification makes on the system. | |
98 | If nil, means stealth fontification is never suspended. | |
99 | To reduce machine load during stealth fontification, at the cost of stealth | |
100 | taking longer to fontify, you could reduce the value of this variable. | |
101 | See also `jit-lock-stealth-nice'." | |
102 | :type (if (condition-case nil (load-average) (error)) | |
103 | '(choice (const :tag "never" nil) | |
104 | (integer :tag "load")) | |
105 | '(const :format "%t: unsupported\n" nil)) | |
106 | :group 'jit-lock) | |
107 | ||
108 | ||
109 | (defcustom jit-lock-stealth-verbose nil | |
110 | "*If non-nil, means stealth fontification should show status messages." | |
111 | :type 'boolean | |
112 | :group 'jit-lock) | |
113 | ||
114 | ||
115 | (defcustom jit-lock-defer-contextually 'syntax-driven | |
116 | "*If non-nil, means deferred fontification should be syntactically true. | |
117 | If nil, means deferred fontification occurs only on those lines modified. This | |
118 | means where modification on a line causes syntactic change on subsequent lines, | |
119 | those subsequent lines are not refontified to reflect their new context. | |
120 | If t, means deferred fontification occurs on those lines modified and all | |
121 | subsequent lines. This means those subsequent lines are refontified to reflect | |
122 | their new syntactic context, either immediately or when scrolling into them. | |
123 | If any other value, e.g., `syntax-driven', means deferred syntactically true | |
124 | fontification occurs only if syntactic fontification is performed using the | |
125 | buffer mode's syntax table, i.e., only if `font-lock-keywords-only' is nil. | |
126 | ||
127 | The value of this variable is used when JIT Lock mode is turned on." | |
128 | :type '(choice (const :tag "never" nil) | |
129 | (const :tag "always" t) | |
130 | (other :tag "syntax-driven" syntax-driven)) | |
131 | :group 'jit-lock) | |
132 | ||
133 | ||
134 | \f | |
135 | ;;; Variables that are not customizable. | |
136 | ||
137 | (defvar jit-lock-mode nil | |
138 | "Non-nil means Just-in-time Lock mode is active.") | |
139 | (make-variable-buffer-local 'jit-lock-mode) | |
140 | ||
be390cb3 SM |
141 | (defvar jit-lock-functions nil |
142 | "Functions to do the actual fontification. | |
143 | They are called with two arguments: the START and END of the region to fontify.") | |
7840ced1 GM |
144 | |
145 | (defvar jit-lock-first-unfontify-pos nil | |
bcacade9 SM |
146 | "Consider text after this position as unfontified. |
147 | If nil, contextual fontification is disabled.") | |
7840ced1 GM |
148 | (make-variable-buffer-local 'jit-lock-first-unfontify-pos) |
149 | ||
150 | ||
151 | (defvar jit-lock-stealth-timer nil | |
152 | "Timer for stealth fontification in Just-in-time Lock mode.") | |
153 | ||
02b420eb SM |
154 | (defvar jit-lock-saved-fontify-buffer-function nil |
155 | "Value of `font-lock-fontify-buffer-function' before jit-lock's activation.") | |
7840ced1 GM |
156 | |
157 | \f | |
158 | ;;; JIT lock mode | |
159 | ||
160 | ;;;###autoload | |
161 | (defun jit-lock-mode (arg) | |
162 | "Toggle Just-in-time Lock mode. | |
bcacade9 | 163 | Turn Just-in-time Lock mode on if and only if ARG is non-nil. |
7840ced1 GM |
164 | Enable it automatically by customizing group `font-lock'. |
165 | ||
166 | When Just-in-time Lock mode is enabled, fontification is different in the | |
167 | following ways: | |
168 | ||
169 | - Demand-driven buffer fontification triggered by Emacs C code. | |
170 | This means initial fontification of the whole buffer does not occur. | |
171 | Instead, fontification occurs when necessary, such as when scrolling | |
172 | through the buffer would otherwise reveal unfontified areas. This is | |
173 | useful if buffer fontification is too slow for large buffers. | |
174 | ||
175 | - Stealthy buffer fontification if `jit-lock-stealth-time' is non-nil. | |
176 | This means remaining unfontified areas of buffers are fontified if Emacs has | |
177 | been idle for `jit-lock-stealth-time' seconds, while Emacs remains idle. | |
178 | This is useful if any buffer has any deferred fontification. | |
179 | ||
180 | - Deferred context fontification if `jit-lock-defer-contextually' is | |
181 | non-nil. This means fontification updates the buffer corresponding to | |
182 | true syntactic context, after `jit-lock-stealth-time' seconds of Emacs | |
183 | idle time, while Emacs remains idle. Otherwise, fontification occurs | |
184 | on modified lines only, and subsequent lines can remain fontified | |
185 | corresponding to previous syntactic contexts. This is useful where | |
186 | strings or comments span lines. | |
187 | ||
188 | Stealth fontification only occurs while the system remains unloaded. | |
189 | If the system load rises above `jit-lock-stealth-load' percent, stealth | |
190 | fontification is suspended. Stealth fontification intensity is controlled via | |
02b420eb | 191 | the variable `jit-lock-stealth-nice'." |
bcacade9 SM |
192 | (setq jit-lock-mode arg) |
193 | (cond (;; Turn Just-in-time Lock mode on. | |
194 | jit-lock-mode | |
195 | ||
5a5987eb SM |
196 | ;; Mark the buffer for refontification |
197 | ;; (in case spurious `fontified' text-props were left around). | |
198 | (jit-lock-fontify-buffer) | |
199 | ||
7840ced1 GM |
200 | ;; Setting `font-lock-fontified' makes font-lock believe the |
201 | ;; buffer is already fontified, so that it won't highlight | |
02b420eb | 202 | ;; the whole buffer or bail out on a large buffer. |
5a5987eb | 203 | (set (make-local-variable 'font-lock-fontified) t) |
7840ced1 | 204 | |
02b420eb SM |
205 | ;; Setup JIT font-lock-fontify-buffer. |
206 | (unless jit-lock-saved-fontify-buffer-function | |
207 | (set (make-local-variable 'jit-lock-saved-fontify-buffer-function) | |
208 | font-lock-fontify-buffer-function) | |
209 | (set (make-local-variable 'font-lock-fontify-buffer-function) | |
210 | 'jit-lock-fontify-buffer)) | |
211 | ||
7840ced1 | 212 | ;; Install an idle timer for stealth fontification. |
c94d5f40 | 213 | (when (and jit-lock-stealth-time (null jit-lock-stealth-timer)) |
02b420eb | 214 | (setq jit-lock-stealth-timer |
7840ced1 GM |
215 | (run-with-idle-timer jit-lock-stealth-time |
216 | jit-lock-stealth-time | |
217 | 'jit-lock-stealth-fontify))) | |
218 | ||
bcacade9 | 219 | ;; Initialize deferred contextual fontification if requested. |
c94d5f40 SM |
220 | (when (or (eq jit-lock-defer-contextually t) |
221 | (and jit-lock-defer-contextually | |
be390cb3 | 222 | (boundp 'font-lock-keywords-only) |
7840ced1 | 223 | (null font-lock-keywords-only))) |
c94d5f40 SM |
224 | (setq jit-lock-first-unfontify-pos |
225 | (or jit-lock-first-unfontify-pos (point-max)))) | |
bcacade9 SM |
226 | |
227 | ;; Setup our after-change-function | |
228 | ;; and remove font-lock's (if any). | |
229 | (remove-hook 'after-change-functions 'font-lock-after-change-function t) | |
230 | (add-hook 'after-change-functions 'jit-lock-after-change nil t) | |
7840ced1 GM |
231 | |
232 | ;; Install the fontification hook. | |
233 | (add-hook 'fontification-functions 'jit-lock-function)) | |
234 | ||
235 | ;; Turn Just-in-time Lock mode off. | |
236 | (t | |
237 | ;; Cancel our idle timer. | |
238 | (when jit-lock-stealth-timer | |
239 | (cancel-timer jit-lock-stealth-timer) | |
240 | (setq jit-lock-stealth-timer nil)) | |
241 | ||
02b420eb SM |
242 | ;; Restore non-JIT font-lock-fontify-buffer. |
243 | (when jit-lock-saved-fontify-buffer-function | |
244 | (set (make-local-variable 'font-lock-fontify-buffer-function) | |
245 | jit-lock-saved-fontify-buffer-function) | |
246 | (setq jit-lock-saved-fontify-buffer-function nil)) | |
247 | ||
bcacade9 | 248 | ;; Remove hooks (and restore font-lock's if necessary). |
02b420eb | 249 | (remove-hook 'after-change-functions 'jit-lock-after-change t) |
bcacade9 SM |
250 | (when font-lock-mode |
251 | (add-hook 'after-change-functions | |
252 | 'font-lock-after-change-function nil t)) | |
7840ced1 GM |
253 | (remove-hook 'fontification-functions 'jit-lock-function)))) |
254 | ||
c94d5f40 SM |
255 | ;;;###autoload |
256 | (defun jit-lock-register (fun &optional contextual) | |
8a677d4f SM |
257 | "Register FUN as a fontification function to be called in this buffer. |
258 | FUN will be called with two arguments START and END indicating the region | |
c94d5f40 SM |
259 | that needs to be (re)fontified. |
260 | If non-nil, CONTEXTUAL means that a contextual fontification would be useful." | |
f8bacc70 | 261 | (add-hook 'jit-lock-functions fun nil t) |
c94d5f40 SM |
262 | (when (and contextual jit-lock-defer-contextually) |
263 | (set (make-local-variable 'jit-lock-defer-contextually) t)) | |
f8bacc70 SM |
264 | (jit-lock-mode t)) |
265 | ||
266 | (defun jit-lock-unregister (fun) | |
8a677d4f | 267 | "Unregister FUN as a fontification function. |
f8bacc70 SM |
268 | Only applies to the current buffer." |
269 | (remove-hook 'jit-lock-functions fun t) | |
270 | (when (or (null jit-lock-functions) | |
271 | (and (equal jit-lock-functions '(t)) | |
272 | (null (default-value 'jit-lock-functions)))) | |
273 | (jit-lock-mode nil))) | |
7840ced1 | 274 | |
02b420eb SM |
275 | ;; This function is used to prevent font-lock-fontify-buffer from |
276 | ;; fontifying eagerly the whole buffer. This is important for | |
277 | ;; things like CWarn mode which adds/removes a few keywords and | |
278 | ;; does a refontify (which takes ages on large files). | |
279 | (defun jit-lock-fontify-buffer () | |
bcacade9 | 280 | (with-buffer-prepared-for-jit-lock |
5a5987eb SM |
281 | (save-restriction |
282 | (widen) | |
283 | (add-text-properties (point-min) (point-max) '(fontified nil))))) | |
7840ced1 GM |
284 | |
285 | \f | |
286 | ;;; On demand fontification. | |
287 | ||
288 | (defun jit-lock-function (start) | |
289 | "Fontify current buffer starting at position START. | |
290 | This function is added to `fontification-functions' when `jit-lock-mode' | |
291 | is active." | |
292 | (when jit-lock-mode | |
9f1a8fb4 | 293 | (jit-lock-function-1 start))) |
60bffb78 GM |
294 | |
295 | ||
296 | (defun jit-lock-function-1 (start) | |
02b420eb | 297 | "Fontify current buffer starting at position START." |
bcacade9 | 298 | (with-buffer-prepared-for-jit-lock |
60bffb78 GM |
299 | (save-excursion |
300 | (save-restriction | |
301 | (widen) | |
302 | (let ((end (min (point-max) (+ start jit-lock-chunk-size))) | |
60bffb78 | 303 | (font-lock-beginning-of-syntax-function nil) |
be390cb3 | 304 | next) |
60bffb78 | 305 | (save-match-data |
be390cb3 SM |
306 | ;; Fontify chunks beginning at START. The end of a |
307 | ;; chunk is either `end', or the start of a region | |
308 | ;; before `end' that has already been fontified. | |
309 | (while start | |
310 | ;; Determine the end of this chunk. | |
311 | (setq next (or (text-property-any start end 'fontified t) | |
312 | end)) | |
313 | ||
314 | ;; Decide which range of text should be fontified. | |
315 | ;; The problem is that START and NEXT may be in the | |
316 | ;; middle of something matched by a font-lock regexp. | |
317 | ;; Until someone has a better idea, let's start | |
318 | ;; at the start of the line containing START and | |
319 | ;; stop at the start of the line following NEXT. | |
320 | (goto-char next) | |
321 | (setq next (line-beginning-position 2)) | |
322 | (goto-char start) | |
323 | (setq start (line-beginning-position)) | |
7840ced1 | 324 | |
be390cb3 SM |
325 | ;; Fontify the chunk, and mark it as fontified. |
326 | ;; We mark it first, to make sure that we don't indefinitely | |
327 | ;; re-execute this fontification if an error occurs. | |
328 | (add-text-properties start next '(fontified t)) | |
329 | (if jit-lock-functions | |
330 | (run-hook-with-args 'jit-lock-functions start next) | |
331 | (font-lock-fontify-region start next)) | |
7840ced1 | 332 | |
be390cb3 SM |
333 | ;; Find the start of the next chunk, if any. |
334 | (setq start (text-property-any next end 'fontified nil))))))))) | |
7840ced1 | 335 | |
7840ced1 GM |
336 | \f |
337 | ;;; Stealth fontification. | |
338 | ||
339 | (defsubst jit-lock-stealth-chunk-start (around) | |
340 | "Return the start of the next chunk to fontify around position AROUND.. | |
341 | Value is nil if there is nothing more to fontify." | |
8c887c51 GM |
342 | (if (zerop (buffer-size)) |
343 | nil | |
344 | (save-restriction | |
345 | (widen) | |
346 | (let* ((next (text-property-any around (point-max) 'fontified nil)) | |
347 | (prev (previous-single-property-change around 'fontified)) | |
348 | (prop (get-text-property (max (point-min) (1- around)) | |
349 | 'fontified)) | |
350 | (start (cond | |
351 | ((null prev) | |
352 | ;; There is no property change between AROUND | |
353 | ;; and the start of the buffer. If PROP is | |
354 | ;; non-nil, everything in front of AROUND is | |
355 | ;; fontified, otherwise nothing is fontified. | |
356 | (if prop | |
357 | nil | |
358 | (max (point-min) | |
359 | (- around (/ jit-lock-chunk-size 2))))) | |
360 | (prop | |
361 | ;; PREV is the start of a region of fontified | |
bcacade9 | 362 | ;; text containing AROUND. Start fontifying a |
8c887c51 GM |
363 | ;; chunk size before the end of the unfontified |
364 | ;; region in front of that. | |
365 | (max (or (previous-single-property-change prev 'fontified) | |
366 | (point-min)) | |
367 | (- prev jit-lock-chunk-size))) | |
368 | (t | |
369 | ;; PREV is the start of a region of unfontified | |
370 | ;; text containing AROUND. Start at PREV or | |
371 | ;; chunk size in front of AROUND, whichever is | |
372 | ;; nearer. | |
373 | (max prev (- around jit-lock-chunk-size))))) | |
374 | (result (cond ((null start) next) | |
375 | ((null next) start) | |
376 | ((< (- around start) (- next around)) start) | |
377 | (t next)))) | |
378 | result)))) | |
379 | ||
7840ced1 GM |
380 | |
381 | (defun jit-lock-stealth-fontify () | |
382 | "Fontify buffers stealthily. | |
383 | This functions is called after Emacs has been idle for | |
384 | `jit-lock-stealth-time' seconds." | |
385 | (unless (or executing-kbd-macro | |
386 | (window-minibuffer-p (selected-window))) | |
387 | (let ((buffers (buffer-list)) | |
388 | minibuffer-auto-raise | |
389 | message-log-max) | |
8c887c51 | 390 | (while (and buffers (not (input-pending-p))) |
7840ced1 GM |
391 | (let ((buffer (car buffers))) |
392 | (setq buffers (cdr buffers)) | |
8c887c51 | 393 | |
7840ced1 GM |
394 | (with-current-buffer buffer |
395 | (when jit-lock-mode | |
396 | ;; This is funny. Calling sit-for with 3rd arg non-nil | |
397 | ;; so that it doesn't redisplay, internally calls | |
398 | ;; wait_reading_process_input also with a parameter | |
399 | ;; saying "don't redisplay." Since this function here | |
400 | ;; is called periodically, this effectively leads to | |
401 | ;; process output not being redisplayed at all because | |
402 | ;; redisplay_internal is never called. (That didn't | |
403 | ;; work in the old redisplay either.) So, we learn that | |
404 | ;; we mustn't call sit-for that way here. But then, we | |
405 | ;; have to be cautious not to call sit-for in a widened | |
406 | ;; buffer, since this could display hidden parts of that | |
407 | ;; buffer. This explains the seemingly weird use of | |
408 | ;; save-restriction/widen here. | |
409 | ||
410 | (with-temp-message (if jit-lock-stealth-verbose | |
411 | (concat "JIT stealth lock " | |
412 | (buffer-name))) | |
8c887c51 | 413 | |
9f1a8fb4 GM |
414 | ;; Perform deferred unfontification, if any. |
415 | (when jit-lock-first-unfontify-pos | |
416 | (save-restriction | |
417 | (widen) | |
418 | (when (and (>= jit-lock-first-unfontify-pos (point-min)) | |
419 | (< jit-lock-first-unfontify-pos (point-max))) | |
bcacade9 | 420 | (with-buffer-prepared-for-jit-lock |
9f1a8fb4 GM |
421 | (put-text-property jit-lock-first-unfontify-pos |
422 | (point-max) 'fontified nil)) | |
bcacade9 | 423 | (setq jit-lock-first-unfontify-pos (point-max))))) |
9f1a8fb4 GM |
424 | |
425 | ;; In the following code, the `sit-for' calls cause a | |
426 | ;; redisplay, so it's required that the | |
427 | ;; buffer-modified flag of a buffer that is displayed | |
428 | ;; has the right value---otherwise the mode line of | |
429 | ;; an unmodified buffer would show a `*'. | |
430 | (let (start | |
431 | (nice (or jit-lock-stealth-nice 0)) | |
432 | (point (point))) | |
433 | (while (and (setq start | |
434 | (jit-lock-stealth-chunk-start point)) | |
435 | (sit-for nice)) | |
7840ced1 | 436 | |
9f1a8fb4 GM |
437 | ;; Wait a little if load is too high. |
438 | (when (and jit-lock-stealth-load | |
439 | (> (car (load-average)) jit-lock-stealth-load)) | |
440 | (sit-for (or jit-lock-stealth-time 30))) | |
7840ced1 | 441 | |
9f1a8fb4 GM |
442 | ;; Unless there's input pending now, fontify. |
443 | (unless (input-pending-p) | |
444 | (jit-lock-function-1 start)))))))))))) | |
7840ced1 GM |
445 | |
446 | ||
447 | \f | |
448 | ;;; Deferred fontification. | |
449 | ||
450 | (defun jit-lock-after-change (start end old-len) | |
451 | "Mark the rest of the buffer as not fontified after a change. | |
452 | Installed on `after-change-functions'. | |
453 | START and END are the start and end of the changed text. OLD-LEN | |
454 | is the pre-change length. | |
455 | This function ensures that lines following the change will be refontified | |
456 | in case the syntax of those lines has changed. Refontification | |
457 | will take place when text is fontified stealthily." | |
7840ced1 | 458 | (when jit-lock-mode |
d9330f43 SM |
459 | (save-excursion |
460 | (with-buffer-prepared-for-jit-lock | |
461 | ;; It's important that the `fontified' property be set from the | |
462 | ;; beginning of the line, else font-lock will properly change the | |
463 | ;; text's face, but the display will have been done already and will | |
464 | ;; be inconsistent with the buffer's content. | |
465 | (goto-char start) | |
466 | (setq start (line-beginning-position)) | |
467 | ;; Make sure we change at least one char (in case of deletions). | |
468 | (setq end (min (max end (1+ start)) (point-max))) | |
469 | ;; Request refontification. | |
470 | (put-text-property start end 'fontified nil)) | |
471 | ;; Mark the change for deferred contextual refontification. | |
472 | (when jit-lock-first-unfontify-pos | |
473 | (setq jit-lock-first-unfontify-pos | |
474 | (min jit-lock-first-unfontify-pos start)))))) | |
7840ced1 | 475 | |
7840ced1 GM |
476 | (provide 'jit-lock) |
477 | ||
478 | ;; jit-lock.el ends here |