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876f2438 SM |
1 | ;;; font-lock.el --- Electric font lock mode |
2 | ||
7ae3cc71 | 3 | ;; Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
071e6277 GM |
4 | ;; 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 |
5 | ;; Free Software Foundation, Inc. | |
030f4a35 | 6 | |
0279f991 | 7 | ;; Author: jwz, then rms, then sm |
030f4a35 RS |
8 | ;; Maintainer: FSF |
9 | ;; Keywords: languages, faces | |
10 | ||
11 | ;; This file is part of GNU Emacs. | |
12 | ||
eb3fa2cf | 13 | ;; GNU Emacs is free software: you can redistribute it and/or modify |
030f4a35 | 14 | ;; it under the terms of the GNU General Public License as published by |
eb3fa2cf GM |
15 | ;; the Free Software Foundation, either version 3 of the License, or |
16 | ;; (at your option) any later version. | |
030f4a35 RS |
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 | |
eb3fa2cf | 24 | ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. |
030f4a35 | 25 | |
030f4a35 RS |
26 | ;;; Commentary: |
27 | ||
b89e1134 SM |
28 | ;; Font Lock mode is a minor mode that causes your comments to be displayed in |
29 | ;; one face, strings in another, reserved words in another, and so on. | |
030f4a35 RS |
30 | ;; |
31 | ;; Comments will be displayed in `font-lock-comment-face'. | |
32 | ;; Strings will be displayed in `font-lock-string-face'. | |
a1eb1cf1 | 33 | ;; Regexps are used to display selected patterns in other faces. |
030f4a35 | 34 | ;; |
9bfbb130 SM |
35 | ;; To make the text you type be fontified, use M-x font-lock-mode RET. |
36 | ;; When this minor mode is on, the faces of the current line are updated with | |
37 | ;; every insertion or deletion. | |
030f4a35 | 38 | ;; |
a2b8e66b | 39 | ;; To turn Font Lock mode on automatically, add this to your ~/.emacs file: |
030f4a35 | 40 | ;; |
b89e1134 | 41 | ;; (add-hook 'emacs-lisp-mode-hook 'turn-on-font-lock) |
030f4a35 | 42 | ;; |
a2b8e66b SM |
43 | ;; Or if you want to turn Font Lock mode on in many modes: |
44 | ;; | |
45 | ;; (global-font-lock-mode t) | |
46 | ;; | |
9bfbb130 SM |
47 | ;; Fontification for a particular mode may be available in a number of levels |
48 | ;; of decoration. The higher the level, the more decoration, but the more time | |
49 | ;; it takes to fontify. See the variable `font-lock-maximum-decoration', and | |
5aa29679 RS |
50 | ;; also the variable `font-lock-maximum-size'. Support modes for Font Lock |
51 | ;; mode can be used to speed up Font Lock mode. See `font-lock-support-mode'. | |
98f84f52 | 52 | \f |
56fcbd7e SM |
53 | ;;; How Font Lock mode fontifies: |
54 | ||
55 | ;; When Font Lock mode is turned on in a buffer, it (a) fontifies the entire | |
56 | ;; buffer and (b) installs one of its fontification functions on one of the | |
57 | ;; hook variables that are run by Emacs after every buffer change (i.e., an | |
58 | ;; insertion or deletion). Fontification means the replacement of `face' text | |
59 | ;; properties in a given region; Emacs displays text with these `face' text | |
60 | ;; properties appropriately. | |
61 | ;; | |
62 | ;; Fontification normally involves syntactic (i.e., strings and comments) and | |
ac6e572c SM |
63 | ;; regexp (i.e., keywords and everything else) passes. There are actually |
64 | ;; three passes; (a) the syntactic keyword pass, (b) the syntactic pass and (c) | |
65 | ;; the keyword pass. Confused? | |
66 | ;; | |
67 | ;; The syntactic keyword pass places `syntax-table' text properties in the | |
68 | ;; buffer according to the variable `font-lock-syntactic-keywords'. It is | |
69 | ;; necessary because Emacs' syntax table is not powerful enough to describe all | |
70 | ;; the different syntactic constructs required by the sort of people who decide | |
71 | ;; that a single quote can be syntactic or not depending on the time of day. | |
72 | ;; (What sort of person could decide to overload the meaning of a quote?) | |
73 | ;; Obviously the syntactic keyword pass must occur before the syntactic pass. | |
74 | ;; | |
75 | ;; The syntactic pass places `face' text properties in the buffer according to | |
76 | ;; syntactic context, i.e., according to the buffer's syntax table and buffer | |
77 | ;; text's `syntax-table' text properties. It involves using a syntax parsing | |
78 | ;; function to determine the context of different parts of a region of text. A | |
79 | ;; syntax parsing function is necessary because generally strings and/or | |
80 | ;; comments can span lines, and so the context of a given region is not | |
81 | ;; necessarily apparent from the content of that region. Because the keyword | |
82 | ;; pass only works within a given region, it is not generally appropriate for | |
83 | ;; syntactic fontification. This is the first fontification pass that makes | |
84 | ;; changes visible to the user; it fontifies strings and comments. | |
85 | ;; | |
86 | ;; The keyword pass places `face' text properties in the buffer according to | |
87 | ;; the variable `font-lock-keywords'. It involves searching for given regexps | |
88 | ;; (or calling given search functions) within the given region. This is the | |
89 | ;; second fontification pass that makes changes visible to the user; it | |
90 | ;; fontifies language reserved words, etc. | |
91 | ;; | |
92 | ;; Oh, and the answer is, "Yes, obviously just about everything should be done | |
93 | ;; in a single syntactic pass, but the only syntactic parser available | |
94 | ;; understands only strings and comments." Perhaps one day someone will write | |
95 | ;; some syntactic parsers for common languages and a son-of-font-lock.el could | |
96 | ;; use them rather then relying so heavily on the keyword (regexp) pass. | |
56fcbd7e | 97 | |
c1f2ffc8 SM |
98 | ;;; How Font Lock mode supports modes or is supported by modes: |
99 | ||
100 | ;; Modes that support Font Lock mode do so by defining one or more variables | |
101 | ;; whose values specify the fontification. Font Lock mode knows of these | |
102 | ;; variable names from (a) the buffer local variable `font-lock-defaults', if | |
103 | ;; non-nil, or (b) the global variable `font-lock-defaults-alist', if the major | |
104 | ;; mode has an entry. (Font Lock mode is set up via (a) where a mode's | |
105 | ;; patterns are distributed with the mode's package library, and (b) where a | |
106 | ;; mode's patterns are distributed with font-lock.el itself. An example of (a) | |
107 | ;; is Pascal mode, an example of (b) is Lisp mode. Normally, the mechanism is | |
108 | ;; (a); (b) is used where it is not clear which package library should contain | |
109 | ;; the pattern definitions.) Font Lock mode chooses which variable to use for | |
110 | ;; fontification based on `font-lock-maximum-decoration'. | |
56fcbd7e | 111 | ;; |
fffa137c | 112 | ;; Font Lock mode fontification behavior can be modified in a number of ways. |
56fcbd7e | 113 | ;; See the below comments and the comments distributed throughout this file. |
c1f2ffc8 SM |
114 | |
115 | ;;; Constructing patterns: | |
116 | ||
98f84f52 SM |
117 | ;; See the documentation for the variable `font-lock-keywords'. |
118 | ;; | |
ac6e572c SM |
119 | ;; Efficient regexps for use as MATCHERs for `font-lock-keywords' and |
120 | ;; `font-lock-syntactic-keywords' can be generated via the function | |
afa18a4e | 121 | ;; `regexp-opt'. |
98f84f52 | 122 | |
c1f2ffc8 SM |
123 | ;;; Adding patterns for modes that already support Font Lock: |
124 | ||
125 | ;; Though Font Lock highlighting patterns already exist for many modes, it's | |
126 | ;; likely there's something that you want fontified that currently isn't, even | |
127 | ;; at the maximum fontification level. You can add highlighting patterns via | |
128 | ;; `font-lock-add-keywords'. For example, say in some C | |
129 | ;; header file you #define the token `and' to expand to `&&', etc., to make | |
130 | ;; your C code almost readable. In your ~/.emacs there could be: | |
98f84f52 | 131 | ;; |
c1f2ffc8 | 132 | ;; (font-lock-add-keywords 'c-mode '("\\<\\(and\\|or\\|not\\)\\>")) |
98f84f52 | 133 | ;; |
c1f2ffc8 SM |
134 | ;; Some modes provide specific ways to modify patterns based on the values of |
135 | ;; other variables. For example, additional C types can be specified via the | |
136 | ;; variable `c-font-lock-extra-types'. | |
137 | ||
138 | ;;; Adding patterns for modes that do not support Font Lock: | |
139 | ||
140 | ;; Not all modes support Font Lock mode. If you (as a user of the mode) add | |
141 | ;; patterns for a new mode, you must define in your ~/.emacs a variable or | |
142 | ;; variables that specify regexp fontification. Then, you should indicate to | |
143 | ;; Font Lock mode, via the mode hook setting `font-lock-defaults', exactly what | |
144 | ;; support is required. For example, say Foo mode should have the following | |
145 | ;; regexps fontified case-sensitively, and comments and strings should not be | |
146 | ;; fontified automagically. In your ~/.emacs there could be: | |
98f84f52 | 147 | ;; |
c1f2ffc8 SM |
148 | ;; (defvar foo-font-lock-keywords |
149 | ;; '(("\\<\\(one\\|two\\|three\\)\\>" . font-lock-keyword-face) | |
150 | ;; ("\\<\\(four\\|five\\|six\\)\\>" . font-lock-type-face)) | |
151 | ;; "Default expressions to highlight in Foo mode.") | |
98f84f52 | 152 | ;; |
c1f2ffc8 | 153 | ;; (add-hook 'foo-mode-hook |
e9476ca8 | 154 | ;; (lambda () |
e0be77f6 SM |
155 | ;; (set (make-local-variable 'font-lock-defaults) |
156 | ;; '(foo-font-lock-keywords t)))) | |
c1f2ffc8 SM |
157 | |
158 | ;;; Adding Font Lock support for modes: | |
159 | ||
160 | ;; Of course, it would be better that the mode already supports Font Lock mode. | |
161 | ;; The package author would do something similar to above. The mode must | |
162 | ;; define at the top-level a variable or variables that specify regexp | |
163 | ;; fontification. Then, the mode command should indicate to Font Lock mode, | |
164 | ;; via `font-lock-defaults', exactly what support is required. For example, | |
165 | ;; say Bar mode should have the following regexps fontified case-insensitively, | |
166 | ;; and comments and strings should be fontified automagically. In bar.el there | |
167 | ;; could be: | |
98f84f52 | 168 | ;; |
c1f2ffc8 SM |
169 | ;; (defvar bar-font-lock-keywords |
170 | ;; '(("\\<\\(uno\\|due\\|tre\\)\\>" . font-lock-keyword-face) | |
171 | ;; ("\\<\\(quattro\\|cinque\\|sei\\)\\>" . font-lock-type-face)) | |
172 | ;; "Default expressions to highlight in Bar mode.") | |
98f84f52 | 173 | ;; |
c1f2ffc8 | 174 | ;; and within `bar-mode' there could be: |
98f84f52 | 175 | ;; |
e0be77f6 SM |
176 | ;; (set (make-local-variable 'font-lock-defaults) |
177 | ;; '(bar-font-lock-keywords nil t)) | |
98f84f52 | 178 | \f |
9bfbb130 SM |
179 | ;; What is fontification for? You might say, "It's to make my code look nice." |
180 | ;; I think it should be for adding information in the form of cues. These cues | |
181 | ;; should provide you with enough information to both (a) distinguish between | |
182 | ;; different items, and (b) identify the item meanings, without having to read | |
183 | ;; the items and think about it. Therefore, fontification allows you to think | |
184 | ;; less about, say, the structure of code, and more about, say, why the code | |
185 | ;; doesn't work. Or maybe it allows you to think less and drift off to sleep. | |
186 | ;; | |
187 | ;; So, here are my opinions/advice/guidelines: | |
5e9e032a | 188 | ;; |
7d7d915a SM |
189 | ;; - Highlight conceptual objects, such as function and variable names, and |
190 | ;; different objects types differently, i.e., (a) and (b) above, highlight | |
191 | ;; function names differently to variable names. | |
192 | ;; - Keep the faces distinct from each other as far as possible. | |
193 | ;; i.e., (a) above. | |
9bfbb130 SM |
194 | ;; - Use the same face for the same conceptual object, across all modes. |
195 | ;; i.e., (b) above, all modes that have items that can be thought of as, say, | |
196 | ;; keywords, should be highlighted with the same face, etc. | |
9bfbb130 | 197 | ;; - Make the face attributes fit the concept as far as possible. |
6772c8e1 GM |
198 | ;; i.e., function names might be a bold color such as blue, comments might |
199 | ;; be a bright color such as red, character strings might be brown, because, | |
9bfbb130 SM |
200 | ;; err, strings are brown (that was not the reason, please believe me). |
201 | ;; - Don't use a non-nil OVERRIDE unless you have a good reason. | |
202 | ;; Only use OVERRIDE for special things that are easy to define, such as the | |
203 | ;; way `...' quotes are treated in strings and comments in Emacs Lisp mode. | |
204 | ;; Don't use it to, say, highlight keywords in commented out code or strings. | |
205 | ;; - Err, that's it. | |
a1eb1cf1 | 206 | \f |
2e6a15fc SM |
207 | ;;; Code: |
208 | ||
8259bf10 SM |
209 | (require 'syntax) |
210 | ||
2273c36b | 211 | ;; Define core `font-lock' group. |
6b61353c | 212 | (defgroup font-lock '((jit-lock custom-group)) |
55015061 | 213 | "Font Lock mode text highlighting package." |
7667fa3a LT |
214 | :link '(custom-manual :tag "Emacs Manual" "(emacs)Font Lock") |
215 | :link '(custom-manual :tag "Elisp Manual" "(elisp)Font Lock Mode") | |
55015061 SM |
216 | :group 'faces) |
217 | ||
a4deefed | 218 | (defgroup font-lock-faces nil |
2273c36b | 219 | "Faces for highlighting text." |
55015061 | 220 | :prefix "font-lock-" |
2273c36b SM |
221 | :group 'font-lock) |
222 | ||
223 | (defgroup font-lock-extra-types nil | |
224 | "Extra mode-specific type names for highlighting declarations." | |
225 | :group 'font-lock) | |
55015061 | 226 | \f |
9bfbb130 SM |
227 | ;; User variables. |
228 | ||
4fffc071 | 229 | (defcustom font-lock-maximum-size 256000 |
9201cc28 | 230 | "Maximum size of a buffer for buffer fontification. |
23a0e11b SM |
231 | Only buffers less than this can be fontified when Font Lock mode is turned on. |
232 | If nil, means size is irrelevant. | |
233 | If a list, each element should be a cons pair of the form (MAJOR-MODE . SIZE), | |
234 | where MAJOR-MODE is a symbol or t (meaning the default). For example: | |
235 | ((c-mode . 256000) (c++-mode . 256000) (rmail-mode . 1048576)) | |
236 | means that the maximum size is 250K for buffers in C or C++ modes, one megabyte | |
237 | for buffers in Rmail mode, and size is irrelevant otherwise." | |
238 | :type '(choice (const :tag "none" nil) | |
239 | (integer :tag "size") | |
240 | (repeat :menu-tag "mode specific" :tag "mode specific" | |
241 | :value ((t . nil)) | |
242 | (cons :tag "Instance" | |
243 | (radio :tag "Mode" | |
244 | (const :tag "all" t) | |
245 | (symbol :tag "name")) | |
246 | (radio :tag "Size" | |
247 | (const :tag "none" nil) | |
248 | (integer :tag "size"))))) | |
55015061 | 249 | :group 'font-lock) |
9bfbb130 | 250 | |
55015061 | 251 | (defcustom font-lock-maximum-decoration t |
9201cc28 | 252 | "Maximum decoration level for fontification. |
9bfbb130 SM |
253 | If nil, use the default decoration (typically the minimum available). |
254 | If t, use the maximum decoration available. | |
255 | If a number, use that level of decoration (or if not available the maximum). | |
256 | If a list, each element should be a cons pair of the form (MAJOR-MODE . LEVEL), | |
257 | where MAJOR-MODE is a symbol or t (meaning the default). For example: | |
5aa29679 RS |
258 | ((c-mode . t) (c++-mode . 2) (t . 1)) |
259 | means use the maximum decoration available for buffers in C mode, level 2 | |
55015061 | 260 | decoration for buffers in C++ mode, and level 1 decoration otherwise." |
b34aa0a3 SM |
261 | :type '(choice (const :tag "default" nil) |
262 | (const :tag "maximum" t) | |
263 | (integer :tag "level" 1) | |
264 | (repeat :menu-tag "mode specific" :tag "mode specific" | |
265 | :value ((t . t)) | |
266 | (cons :tag "Instance" | |
267 | (radio :tag "Mode" | |
268 | (const :tag "all" t) | |
269 | (symbol :tag "name")) | |
270 | (radio :tag "Decoration" | |
271 | (const :tag "default" nil) | |
019f00d8 | 272 | (const :tag "maximum" t) |
b34aa0a3 | 273 | (integer :tag "level" 1))))) |
55015061 SM |
274 | :group 'font-lock) |
275 | ||
4fffc071 | 276 | (defcustom font-lock-verbose 0 |
9201cc28 | 277 | "If non-nil, means show status messages for buffer fontification. |
23a0e11b SM |
278 | If a number, only buffers greater than this size have fontification messages." |
279 | :type '(choice (const :tag "never" nil) | |
4fffc071 SM |
280 | (other :tag "always" t) |
281 | (integer :tag "size")) | |
55015061 | 282 | :group 'font-lock) |
9bfbb130 | 283 | \f |
1c172af4 SM |
284 | |
285 | ;; Originally these variable values were face names such as `bold' etc. | |
286 | ;; Now we create our own faces, but we keep these variables for compatibility | |
287 | ;; and they give users another mechanism for changing face appearance. | |
288 | ;; We now allow a FACENAME in `font-lock-keywords' to be any expression that | |
289 | ;; returns a face. So the easiest thing is to continue using these variables, | |
290 | ;; rather than sometimes evaling FACENAME and sometimes not. sm. | |
8230b7b3 GM |
291 | |
292 | ;; Note that in new code, in the vast majority of cases there is no | |
293 | ;; need to create variables that specify face names. Simply using | |
294 | ;; faces directly is enough. Font-lock is not a template to be | |
295 | ;; followed in this area. | |
1c172af4 SM |
296 | (defvar font-lock-comment-face 'font-lock-comment-face |
297 | "Face name to use for comments.") | |
298 | ||
9177dd93 | 299 | (defvar font-lock-comment-delimiter-face 'font-lock-comment-delimiter-face |
4403a969 | 300 | "Face name to use for comment delimiters.") |
9177dd93 | 301 | |
1c172af4 SM |
302 | (defvar font-lock-string-face 'font-lock-string-face |
303 | "Face name to use for strings.") | |
304 | ||
305 | (defvar font-lock-doc-face 'font-lock-doc-face | |
306 | "Face name to use for documentation.") | |
307 | ||
308 | (defvar font-lock-keyword-face 'font-lock-keyword-face | |
309 | "Face name to use for keywords.") | |
310 | ||
311 | (defvar font-lock-builtin-face 'font-lock-builtin-face | |
312 | "Face name to use for builtins.") | |
313 | ||
314 | (defvar font-lock-function-name-face 'font-lock-function-name-face | |
315 | "Face name to use for function names.") | |
316 | ||
317 | (defvar font-lock-variable-name-face 'font-lock-variable-name-face | |
318 | "Face name to use for variable names.") | |
319 | ||
320 | (defvar font-lock-type-face 'font-lock-type-face | |
321 | "Face name to use for type and class names.") | |
322 | ||
323 | (defvar font-lock-constant-face 'font-lock-constant-face | |
324 | "Face name to use for constant and label names.") | |
325 | ||
326 | (defvar font-lock-warning-face 'font-lock-warning-face | |
327 | "Face name to use for things that should stand out.") | |
328 | ||
5d27cf9f DP |
329 | (defvar font-lock-negation-char-face 'font-lock-negation-char-face |
330 | "Face name to use for easy to overlook negation. | |
331 | This can be an \"!\" or the \"n\" in \"ifndef\".") | |
332 | ||
d654cab8 SM |
333 | (defvar font-lock-preprocessor-face 'font-lock-preprocessor-face |
334 | "Face name to use for preprocessor directives.") | |
335 | ||
9087b271 | 336 | (defvar font-lock-reference-face 'font-lock-constant-face) |
7ee5f414 | 337 | (make-obsolete-variable 'font-lock-reference-face 'font-lock-constant-face "20.3") |
1c172af4 | 338 | |
9bfbb130 SM |
339 | ;; Fontification variables: |
340 | ||
030f4a35 | 341 | (defvar font-lock-keywords nil |
ac6e572c | 342 | "A list of the keywords to highlight. |
69968400 RS |
343 | There are two kinds of values: user-level, and compiled. |
344 | ||
345 | A user-level keywords list is what a major mode or the user would | |
346 | set up. Normally the list would come from `font-lock-defaults'. | |
347 | through selection of a fontification level and evaluation of any | |
348 | contained expressions. You can also alter it by calling | |
349 | `font-lock-add-keywords' or `font-lock-remove-keywords' with MODE = nil. | |
350 | ||
351 | Each element in a user-level keywords list should have one of these forms: | |
a1eb1cf1 | 352 | |
826b2925 | 353 | MATCHER |
9bab4985 | 354 | (MATCHER . SUBEXP) |
826b2925 SM |
355 | (MATCHER . FACENAME) |
356 | (MATCHER . HIGHLIGHT) | |
357 | (MATCHER HIGHLIGHT ...) | |
a078558d | 358 | (eval . FORM) |
a1eb1cf1 | 359 | |
558371ba | 360 | where MATCHER can be either the regexp to search for, or the function name to |
f9c0bc2e | 361 | call to make the search (called with one argument, the limit of the search; |
4837b516 | 362 | it should return non-nil, move point, and set `match-data' appropriately if |
f9c0bc2e | 363 | it succeeds; like `re-search-forward' would). |
558371ba | 364 | MATCHER regexps can be generated via the function `regexp-opt'. |
9bfbb130 | 365 | |
a078558d SM |
366 | FORM is an expression, whose value should be a keyword element, evaluated when |
367 | the keyword is (first) used in a buffer. This feature can be used to provide a | |
368 | keyword that can only be generated when Font Lock mode is actually turned on. | |
369 | ||
558371ba SM |
370 | HIGHLIGHT should be either MATCH-HIGHLIGHT or MATCH-ANCHORED. |
371 | ||
9c8de95c SM |
372 | For highlighting single items, for example each instance of the word \"foo\", |
373 | typically only MATCH-HIGHLIGHT is required. | |
d9f7b2d3 | 374 | However, if an item or (typically) items are to be highlighted following the |
9c8de95c SM |
375 | instance of another item (the anchor), for example each instance of the |
376 | word \"bar\" following the word \"anchor\" then MATCH-ANCHORED may be required. | |
9bfbb130 SM |
377 | |
378 | MATCH-HIGHLIGHT should be of the form: | |
379 | ||
9bab4985 | 380 | (SUBEXP FACENAME [OVERRIDE [LAXMATCH]]) |
9bfbb130 | 381 | |
9bab4985 RS |
382 | SUBEXP is the number of the subexpression of MATCHER to be highlighted. |
383 | ||
384 | FACENAME is an expression whose value is the face name to use. | |
385 | Instead of a face, FACENAME can evaluate to a property list | |
386 | of the form (face FACE PROP1 VAL1 PROP2 VAL2 ...) | |
558371ba | 387 | in which case all the listed text-properties will be set rather than |
67b4790b | 388 | just FACE. In such a case, you will most likely want to put those |
558371ba SM |
389 | properties in `font-lock-extra-managed-props' or to override |
390 | `font-lock-unfontify-region-function'. | |
a1eb1cf1 | 391 | |
2d63aa67 | 392 | OVERRIDE and LAXMATCH are flags. If OVERRIDE is t, existing fontification can |
9bfbb130 SM |
393 | be overwritten. If `keep', only parts not already fontified are highlighted. |
394 | If `prepend' or `append', existing fontification is merged with the new, in | |
395 | which the new or existing fontification, respectively, takes precedence. | |
9bab4985 RS |
396 | If LAXMATCH is non-nil, that means don't signal an error if there is |
397 | no match for SUBEXP in MATCHER. | |
a1eb1cf1 | 398 | |
9bfbb130 SM |
399 | For example, an element of the form highlights (if not already highlighted): |
400 | ||
9c8de95c | 401 | \"\\\\\\=<foo\\\\\\=>\" discrete occurrences of \"foo\" in the value of the |
876f2438 | 402 | variable `font-lock-keyword-face'. |
9c8de95c | 403 | (\"fu\\\\(bar\\\\)\" . 1) substring \"bar\" within all occurrences of \"fubar\" in |
9bfbb130 SM |
404 | the value of `font-lock-keyword-face'. |
405 | (\"fubar\" . fubar-face) Occurrences of \"fubar\" in the value of `fubar-face'. | |
406 | (\"foo\\\\|bar\" 0 foo-bar-face t) | |
9c8de95c | 407 | occurrences of either \"foo\" or \"bar\" in the value |
9bfbb130 | 408 | of `foo-bar-face', even if already highlighted. |
844a6a46 | 409 | (fubar-match 1 fubar-face) |
9c8de95c | 410 | the first subexpression within all occurrences of |
844a6a46 SM |
411 | whatever the function `fubar-match' finds and matches |
412 | in the value of `fubar-face'. | |
9bfbb130 SM |
413 | |
414 | MATCH-ANCHORED should be of the form: | |
415 | ||
416 | (MATCHER PRE-MATCH-FORM POST-MATCH-FORM MATCH-HIGHLIGHT ...) | |
417 | ||
9c8de95c SM |
418 | where MATCHER is a regexp to search for or the function name to call to make |
419 | the search, as for MATCH-HIGHLIGHT above, but with one exception; see below. | |
876f2438 SM |
420 | PRE-MATCH-FORM and POST-MATCH-FORM are evaluated before the first, and after |
421 | the last, instance MATCH-ANCHORED's MATCHER is used. Therefore they can be | |
97f38995 | 422 | used to initialize before, and cleanup after, MATCHER is used. Typically, |
876f2438 SM |
423 | PRE-MATCH-FORM is used to move to some position relative to the original |
424 | MATCHER, before starting with MATCH-ANCHORED's MATCHER. POST-MATCH-FORM might | |
67b4790b | 425 | be used to move back, before resuming with MATCH-ANCHORED's parent's MATCHER. |
9bfbb130 SM |
426 | |
427 | For example, an element of the form highlights (if not already highlighted): | |
428 | ||
876f2438 | 429 | (\"\\\\\\=<anchor\\\\\\=>\" (0 anchor-face) (\"\\\\\\=<item\\\\\\=>\" nil nil (0 item-face))) |
9bfbb130 | 430 | |
9c8de95c | 431 | discrete occurrences of \"anchor\" in the value of `anchor-face', and subsequent |
876f2438 SM |
432 | discrete occurrences of \"item\" (on the same line) in the value of `item-face'. |
433 | (Here PRE-MATCH-FORM and POST-MATCH-FORM are nil. Therefore \"item\" is | |
434 | initially searched for starting from the end of the match of \"anchor\", and | |
67b4790b | 435 | searching for subsequent instances of \"anchor\" resumes from where searching |
876f2438 | 436 | for \"item\" concluded.) |
9bfbb130 | 437 | |
56fcbd7e SM |
438 | The above-mentioned exception is as follows. The limit of the MATCHER search |
439 | defaults to the end of the line after PRE-MATCH-FORM is evaluated. | |
440 | However, if PRE-MATCH-FORM returns a position greater than the position after | |
441 | PRE-MATCH-FORM is evaluated, that position is used as the limit of the search. | |
442 | It is generally a bad idea to return a position greater than the end of the | |
443 | line, i.e., cause the MATCHER search to span lines. | |
444 | ||
6e1d0d15 SM |
445 | These regular expressions can match text which spans lines, although |
446 | it is better to avoid it if possible since updating them while editing | |
447 | text is slower, and it is not guaranteed to be always correct when using | |
448 | support modes like jit-lock or lazy-lock. | |
a1eb1cf1 | 449 | |
2d63aa67 SM |
450 | This variable is set by major modes via the variable `font-lock-defaults'. |
451 | Be careful when composing regexps for this list; a poorly written pattern can | |
69968400 RS |
452 | dramatically slow things down! |
453 | ||
454 | A compiled keywords list starts with t. It is produced internal | |
455 | by `font-lock-compile-keywords' from a user-level keywords list. | |
456 | Its second element is the user-level keywords list that was | |
457 | compiled. The remaining elements have the same form as | |
458 | user-level keywords, but normally their values have been | |
459 | optimized.") | |
030f4a35 | 460 | |
c1f2ffc8 | 461 | (defvar font-lock-keywords-alist nil |
0003d2e3 LK |
462 | "Alist of additional `font-lock-keywords' elements for major modes. |
463 | ||
28aa8148 | 464 | Each element has the form (MODE KEYWORDS . HOW). |
0003d2e3 LK |
465 | `font-lock-set-defaults' adds the elements in the list KEYWORDS to |
466 | `font-lock-keywords' when Font Lock is turned on in major mode MODE. | |
467 | ||
28aa8148 | 468 | If HOW is nil, KEYWORDS are added at the beginning of |
0003d2e3 | 469 | `font-lock-keywords'. If it is `set', they are used to replace the |
28aa8148 | 470 | value of `font-lock-keywords'. If HOW is any other non-nil value, |
0003d2e3 LK |
471 | they are added at the end. |
472 | ||
76f5e2af GM |
473 | This is normally set via `font-lock-add-keywords' and |
474 | `font-lock-remove-keywords'.") | |
3b2d0d76 | 475 | (put 'font-lock-keywords-alist 'risky-local-variable t) |
76f5e2af GM |
476 | |
477 | (defvar font-lock-removed-keywords-alist nil | |
0003d2e3 LK |
478 | "Alist of `font-lock-keywords' elements to be removed for major modes. |
479 | ||
480 | Each element has the form (MODE . KEYWORDS). `font-lock-set-defaults' | |
481 | removes the elements in the list KEYWORDS from `font-lock-keywords' | |
482 | when Font Lock is turned on in major mode MODE. | |
483 | ||
76f5e2af GM |
484 | This is normally set via `font-lock-add-keywords' and |
485 | `font-lock-remove-keywords'.") | |
c1f2ffc8 | 486 | |
9bfbb130 | 487 | (defvar font-lock-keywords-only nil |
d46c21ec SM |
488 | "*Non-nil means Font Lock should not fontify comments or strings. |
489 | This is normally set via `font-lock-defaults'.") | |
b89e1134 | 490 | |
030f4a35 | 491 | (defvar font-lock-keywords-case-fold-search nil |
d46c21ec | 492 | "*Non-nil means the patterns in `font-lock-keywords' are case-insensitive. |
8b7581e0 CY |
493 | This is set via the function `font-lock-set-defaults', based on |
494 | the CASE-FOLD argument of `font-lock-defaults'.") | |
1087f198 | 495 | (make-variable-buffer-local 'font-lock-keywords-case-fold-search) |
030f4a35 | 496 | |
c0a6a9fe SM |
497 | (defvar font-lock-syntactically-fontified 0 |
498 | "Point up to which `font-lock-syntactic-keywords' has been applied. | |
499 | If nil, this is ignored, in which case the syntactic fontification may | |
500 | sometimes be slightly incorrect.") | |
501 | (make-variable-buffer-local 'font-lock-syntactically-fontified) | |
502 | ||
1c172af4 SM |
503 | (defvar font-lock-syntactic-face-function |
504 | (lambda (state) | |
505 | (if (nth 3 state) font-lock-string-face font-lock-comment-face)) | |
506 | "Function to determine which face to use when fontifying syntactically. | |
507 | The function is called with a single parameter (the state as returned by | |
508 | `parse-partial-sexp' at the beginning of the region to highlight) and | |
8ba81e93 | 509 | should return a face. This is normally set via `font-lock-defaults'.") |
1c172af4 | 510 | |
ac6e572c | 511 | (defvar font-lock-syntactic-keywords nil |
9bab4985 RS |
512 | "A list of the syntactic keywords to put syntax properties on. |
513 | The value can be the list itself, or the name of a function or variable | |
514 | whose value is the list. | |
515 | ||
ac6e572c | 516 | See `font-lock-keywords' for a description of the form of this list; |
9bab4985 | 517 | only the differences are stated here. MATCH-HIGHLIGHT should be of the form: |
ac6e572c | 518 | |
9bab4985 | 519 | (SUBEXP SYNTAX OVERRIDE LAXMATCH) |
ac6e572c | 520 | |
5299cb8e SM |
521 | where SYNTAX can be a string (as taken by `modify-syntax-entry'), a syntax |
522 | table, a cons cell (as returned by `string-to-syntax') or an expression whose | |
523 | value is such a form. OVERRIDE cannot be `prepend' or `append'. | |
ac6e572c | 524 | |
9bab4985 RS |
525 | Here are two examples of elements of `font-lock-syntactic-keywords' |
526 | and what they do: | |
9c8de95c | 527 | |
5299cb8e | 528 | (\"\\\\$\\\\(#\\\\)\" 1 \".\") |
9c8de95c | 529 | |
9bab4985 RS |
530 | gives a hash character punctuation syntax (\".\") when following a |
531 | dollar-sign character. Hash characters in other contexts will still | |
532 | follow whatever the syntax table says about the hash character. | |
9c8de95c SM |
533 | |
534 | (\"\\\\('\\\\).\\\\('\\\\)\" | |
5299cb8e SM |
535 | (1 \"\\\"\") |
536 | (2 \"\\\"\")) | |
9c8de95c | 537 | |
9bab4985 RS |
538 | gives a pair single-quotes, which surround a single character, a SYNTAX of |
539 | \"\\\"\" (meaning string quote syntax). Single-quote characters in other | |
540 | contexts will not be affected. | |
9c8de95c | 541 | |
ac6e572c SM |
542 | This is normally set via `font-lock-defaults'.") |
543 | ||
b056da51 | 544 | (defvar font-lock-syntax-table nil |
799761f0 | 545 | "Non-nil means use this syntax table for fontifying. |
d46c21ec SM |
546 | If this is nil, the major mode's syntax table is used. |
547 | This is normally set via `font-lock-defaults'.") | |
548 | ||
549 | (defvar font-lock-beginning-of-syntax-function nil | |
fc896a92 RS |
550 | "*Non-nil means use this function to move back outside all constructs. |
551 | When called with no args it should move point backward to a place which | |
552 | is not in a string or comment and not within any bracket-pairs (or else, | |
553 | a place such that any bracket-pairs outside it can be ignored for Emacs | |
554 | syntax analysis and fontification). | |
555 | ||
822b23b0 LK |
556 | If this is nil, Font Lock uses `syntax-begin-function' to move back |
557 | outside of any comment, string, or sexp. This variable is semi-obsolete; | |
558 | we recommend setting `syntax-begin-function' instead. | |
559 | ||
560 | This is normally set via `font-lock-defaults'.") | |
b056da51 | 561 | |
a078558d SM |
562 | (defvar font-lock-mark-block-function nil |
563 | "*Non-nil means use this function to mark a block of text. | |
564 | When called with no args it should leave point at the beginning of any | |
565 | enclosing textual block and mark at the end. | |
566 | This is normally set via `font-lock-defaults'.") | |
567 | ||
a2b8e66b SM |
568 | (defvar font-lock-fontify-buffer-function 'font-lock-default-fontify-buffer |
569 | "Function to use for fontifying the buffer. | |
570 | This is normally set via `font-lock-defaults'.") | |
571 | ||
572 | (defvar font-lock-unfontify-buffer-function 'font-lock-default-unfontify-buffer | |
573 | "Function to use for unfontifying the buffer. | |
574 | This is used when turning off Font Lock mode. | |
575 | This is normally set via `font-lock-defaults'.") | |
576 | ||
577 | (defvar font-lock-fontify-region-function 'font-lock-default-fontify-region | |
578 | "Function to use for fontifying a region. | |
579 | It should take two args, the beginning and end of the region, and an optional | |
0edd2744 LK |
580 | third arg VERBOSE. If VERBOSE is non-nil, the function should print status |
581 | messages. This is normally set via `font-lock-defaults'.") | |
a2b8e66b SM |
582 | |
583 | (defvar font-lock-unfontify-region-function 'font-lock-default-unfontify-region | |
584 | "Function to use for unfontifying a region. | |
585 | It should take two args, the beginning and end of the region. | |
586 | This is normally set via `font-lock-defaults'.") | |
587 | ||
588 | (defvar font-lock-inhibit-thing-lock nil | |
589 | "List of Font Lock mode related modes that should not be turned on. | |
019f00d8 | 590 | Currently, valid mode names are `fast-lock-mode', `jit-lock-mode' and |
e7f07c2c | 591 | `lazy-lock-mode'. This is normally set via `font-lock-defaults'.") |
a2b8e66b | 592 | |
f8115798 SM |
593 | (defvar font-lock-multiline nil |
594 | "Whether font-lock should cater to multiline keywords. | |
595 | If nil, don't try to handle multiline patterns. | |
596 | If t, always handle multiline patterns. | |
597 | If `undecided', don't try to handle multiline patterns until you see one. | |
598 | Major/minor modes can set this variable if they know which option applies.") | |
599 | ||
600 | (defvar font-lock-fontified nil) ; Whether we have fontified the buffer. | |
030f4a35 | 601 | \f |
5aa29679 RS |
602 | ;; Font Lock mode. |
603 | ||
604 | (eval-when-compile | |
2e6a15fc | 605 | ;; |
5aa29679 | 606 | ;; We don't do this at the top-level as we only use non-autoloaded macros. |
2e6a15fc SM |
607 | (require 'cl) |
608 | ;; | |
609 | ;; Borrowed from lazy-lock.el. | |
610 | ;; We use this to preserve or protect things when modifying text properties. | |
611 | (defmacro save-buffer-state (varlist &rest body) | |
612 | "Bind variables according to VARLIST and eval BODY restoring buffer state." | |
56d8206b | 613 | (declare (indent 1) (debug let)) |
7b7a23f4 EZ |
614 | (let ((modified (make-symbol "modified"))) |
615 | `(let* ,(append varlist | |
886c13f1 | 616 | `((,modified (buffer-modified-p)) |
7b7a23f4 EZ |
617 | (buffer-undo-list t) |
618 | (inhibit-read-only t) | |
619 | (inhibit-point-motion-hooks t) | |
620 | (inhibit-modification-hooks t) | |
621 | deactivate-mark | |
622 | buffer-file-name | |
623 | buffer-file-truename)) | |
e97fd4fb AS |
624 | (unwind-protect |
625 | (progn | |
626 | ,@body) | |
627 | (unless ,modified | |
628 | (restore-buffer-modified-p nil)))))) | |
e0e277ff SM |
629 | ;; |
630 | ;; Shut up the byte compiler. | |
1c172af4 | 631 | (defvar font-lock-face-attributes)) ; Obsolete but respected if set. |
030f4a35 | 632 | |
f8115798 SM |
633 | (defun font-lock-mode-internal (arg) |
634 | ;; Turn on Font Lock mode. | |
635 | (when arg | |
636 | (add-hook 'after-change-functions 'font-lock-after-change-function t t) | |
637 | (font-lock-set-defaults) | |
638 | (font-lock-turn-on-thing-lock) | |
639 | ;; Fontify the buffer if we have to. | |
640 | (let ((max-size (font-lock-value-in-major-mode font-lock-maximum-size))) | |
641 | (cond (font-lock-fontified | |
642 | nil) | |
643 | ((or (null max-size) (> max-size (buffer-size))) | |
644 | (font-lock-fontify-buffer)) | |
645 | (font-lock-verbose | |
646 | (message "Fontifying %s...buffer size greater than font-lock-maximum-size" | |
647 | (buffer-name)))))) | |
648 | ;; Turn off Font Lock mode. | |
649 | (unless font-lock-mode | |
650 | (remove-hook 'after-change-functions 'font-lock-after-change-function t) | |
651 | (font-lock-unfontify-buffer) | |
652 | (font-lock-turn-off-thing-lock))) | |
653 | ||
28aa8148 | 654 | (defun font-lock-add-keywords (mode keywords &optional how) |
041470d2 | 655 | "Add highlighting KEYWORDS for MODE. |
8ba81e93 | 656 | |
041470d2 | 657 | MODE should be a symbol, the major mode command name, such as `c-mode' |
1c626aaf | 658 | or nil. If nil, highlighting keywords are added for the current buffer. |
c1f2ffc8 SM |
659 | KEYWORDS should be a list; see the variable `font-lock-keywords'. |
660 | By default they are added at the beginning of the current highlighting list. | |
28aa8148 RF |
661 | If optional argument HOW is `set', they are used to replace the current |
662 | highlighting list. If HOW is any other non-nil value, they are added at the | |
2d63aa67 | 663 | end of the current highlighting list. |
c1f2ffc8 SM |
664 | |
665 | For example: | |
666 | ||
667 | (font-lock-add-keywords 'c-mode | |
668 | '((\"\\\\\\=<\\\\(FIXME\\\\):\" 1 font-lock-warning-face prepend) | |
669 | (\"\\\\\\=<\\\\(and\\\\|or\\\\|not\\\\)\\\\\\=>\" . font-lock-keyword-face))) | |
670 | ||
671 | adds two fontification patterns for C mode, to fontify `FIXME:' words, even in | |
2d63aa67 SM |
672 | comments, and to fontify `and', `or' and `not' words as keywords. |
673 | ||
bed88438 LT |
674 | The above procedure will only add the keywords for C mode, not |
675 | for modes derived from C mode. To add them for derived modes too, | |
676 | pass nil for MODE and add the call to c-mode-hook. | |
677 | ||
678 | For example: | |
679 | ||
680 | (add-hook 'c-mode-hook | |
681 | (lambda () | |
dd314c0f | 682 | (font-lock-add-keywords nil |
bed88438 LT |
683 | '((\"\\\\\\=<\\\\(FIXME\\\\):\" 1 font-lock-warning-face prepend) |
684 | (\"\\\\\\=<\\\\(and\\\\|or\\\\|not\\\\)\\\\\\=>\" . | |
685 | font-lock-keyword-face))))) | |
686 | ||
687 | The above procedure may fail to add keywords to derived modes if | |
688 | some involved major mode does not follow the standard conventions. | |
689 | File a bug report if this happens, so the major mode can be corrected. | |
558371ba | 690 | |
8c2d6a44 | 691 | Note that some modes have specialized support for additional patterns, e.g., |
2d63aa67 SM |
692 | see the variables `c-font-lock-extra-types', `c++-font-lock-extra-types', |
693 | `objc-font-lock-extra-types' and `java-font-lock-extra-types'." | |
041470d2 | 694 | (cond (mode |
28aa8148 | 695 | ;; If MODE is non-nil, add the KEYWORDS and HOW spec to |
c1f2ffc8 | 696 | ;; `font-lock-keywords-alist' so `font-lock-set-defaults' uses them. |
28aa8148 | 697 | (let ((spec (cons keywords how)) cell) |
041470d2 | 698 | (if (setq cell (assq mode font-lock-keywords-alist)) |
28aa8148 | 699 | (if (eq how 'set) |
76f5e2af GM |
700 | (setcdr cell (list spec)) |
701 | (setcdr cell (append (cdr cell) (list spec)))) | |
702 | (push (list mode spec) font-lock-keywords-alist))) | |
703 | ;; Make sure that `font-lock-removed-keywords-alist' does not | |
704 | ;; contain the new keywords. | |
28aa8148 | 705 | (font-lock-update-removed-keyword-alist mode keywords how)) |
6e1d0d15 | 706 | (t |
72fa3278 SM |
707 | (when (and font-lock-mode |
708 | (not (or font-lock-keywords font-lock-defaults))) | |
709 | ;; The major mode has not set any keywords, so when we enabled | |
710 | ;; font-lock-mode it only enabled the font-core.el part, not the | |
711 | ;; font-lock-mode-internal. Try again. | |
712 | (font-lock-mode -1) | |
713 | (set (make-local-variable 'font-lock-defaults) '(nil t)) | |
714 | (font-lock-mode 1)) | |
6e1d0d15 | 715 | ;; Otherwise set or add the keywords now. |
bed88438 LT |
716 | ;; This is a no-op if it has been done already in this buffer |
717 | ;; for the correct major mode. | |
6e1d0d15 | 718 | (font-lock-set-defaults) |
69968400 RS |
719 | (let ((was-compiled (eq (car font-lock-keywords) t))) |
720 | ;; Bring back the user-level (uncompiled) keywords. | |
721 | (if was-compiled | |
722 | (setq font-lock-keywords (cadr font-lock-keywords))) | |
723 | ;; Now modify or replace them. | |
28aa8148 | 724 | (if (eq how 'set) |
69968400 RS |
725 | (setq font-lock-keywords keywords) |
726 | (font-lock-remove-keywords nil keywords) ;to avoid duplicates | |
727 | (let ((old (if (eq (car-safe font-lock-keywords) t) | |
728 | (cdr font-lock-keywords) | |
729 | font-lock-keywords))) | |
28aa8148 | 730 | (setq font-lock-keywords (if how |
69968400 RS |
731 | (append old keywords) |
732 | (append keywords old))))) | |
733 | ;; If the keywords were compiled before, compile them again. | |
734 | (if was-compiled | |
e0be77f6 | 735 | (setq font-lock-keywords |
533047c2 | 736 | (font-lock-compile-keywords font-lock-keywords))))))) |
3708dfe9 | 737 | |
28aa8148 | 738 | (defun font-lock-update-removed-keyword-alist (mode keywords how) |
95965740 | 739 | "Update `font-lock-removed-keywords-alist' when adding new KEYWORDS to MODE." |
76f5e2af GM |
740 | ;; When font-lock is enabled first all keywords in the list |
741 | ;; `font-lock-keywords-alist' are added, then all keywords in the | |
742 | ;; list `font-lock-removed-keywords-alist' are removed. If a | |
743 | ;; keyword was once added, removed, and then added again it must be | |
744 | ;; removed from the removed-keywords list. Otherwise the second add | |
745 | ;; will not take effect. | |
6e1d0d15 | 746 | (let ((cell (assq mode font-lock-removed-keywords-alist))) |
76f5e2af | 747 | (if cell |
28aa8148 | 748 | (if (eq how 'set) |
76f5e2af GM |
749 | ;; A new set of keywords is defined. Forget all about |
750 | ;; our old keywords that should be removed. | |
751 | (setq font-lock-removed-keywords-alist | |
752 | (delq cell font-lock-removed-keywords-alist)) | |
753 | ;; Delete all previously removed keywords. | |
754 | (dolist (kword keywords) | |
755 | (setcdr cell (delete kword (cdr cell)))) | |
6e1d0d15 | 756 | ;; Delete the mode cell if empty. |
76f5e2af GM |
757 | (if (null (cdr cell)) |
758 | (setq font-lock-removed-keywords-alist | |
759 | (delq cell font-lock-removed-keywords-alist))))))) | |
760 | ||
761 | ;; Written by Anders Lindgren <andersl@andersl.com>. | |
762 | ;; | |
763 | ;; Case study: | |
764 | ;; (I) The keywords are removed from a major mode. | |
765 | ;; In this case the keyword could be local (i.e. added earlier by | |
766 | ;; `font-lock-add-keywords'), global, or both. | |
767 | ;; | |
768 | ;; (a) In the local case we remove the keywords from the variable | |
769 | ;; `font-lock-keywords-alist'. | |
770 | ;; | |
771 | ;; (b) The actual global keywords are not known at this time. | |
772 | ;; All keywords are added to `font-lock-removed-keywords-alist', | |
773 | ;; when font-lock is enabled those keywords are removed. | |
774 | ;; | |
775 | ;; Note that added keywords are taken out of the list of removed | |
776 | ;; keywords. This ensure correct operation when the same keyword | |
777 | ;; is added and removed several times. | |
778 | ;; | |
779 | ;; (II) The keywords are removed from the current buffer. | |
6e1d0d15 SM |
780 | (defun font-lock-remove-keywords (mode keywords) |
781 | "Remove highlighting KEYWORDS for MODE. | |
3708dfe9 | 782 | |
6e1d0d15 | 783 | MODE should be a symbol, the major mode command name, such as `c-mode' |
558371ba SM |
784 | or nil. If nil, highlighting keywords are removed for the current buffer. |
785 | ||
bed88438 LT |
786 | To make the removal apply to modes derived from MODE as well, |
787 | pass nil for MODE and add the call to MODE-hook. This may fail | |
788 | for some derived modes if some involved major mode does not | |
789 | follow the standard conventions. File a bug report if this | |
790 | happens, so the major mode can be corrected." | |
6e1d0d15 SM |
791 | (cond (mode |
792 | ;; Remove one keyword at the time. | |
793 | (dolist (keyword keywords) | |
794 | (let ((top-cell (assq mode font-lock-keywords-alist))) | |
795 | ;; If MODE is non-nil, remove the KEYWORD from | |
76f5e2af GM |
796 | ;; `font-lock-keywords-alist'. |
797 | (when top-cell | |
28aa8148 RF |
798 | (dolist (keyword-list-how-pair (cdr top-cell)) |
799 | ;; `keywords-list-how-pair' is a cons with a list of | |
800 | ;; keywords in the car top-cell and the original how | |
76f5e2af | 801 | ;; argument in the cdr top-cell. |
28aa8148 RF |
802 | (setcar keyword-list-how-pair |
803 | (delete keyword (car keyword-list-how-pair)))) | |
804 | ;; Remove keyword list/how pair when the keyword list | |
805 | ;; is empty and how doesn't specify `set'. (If it | |
76f5e2af GM |
806 | ;; should be deleted then previously deleted keywords |
807 | ;; would appear again.) | |
808 | (let ((cell top-cell)) | |
809 | (while (cdr cell) | |
810 | (if (and (null (car (car (cdr cell)))) | |
811 | (not (eq (cdr (car (cdr cell))) 'set))) | |
812 | (setcdr cell (cdr (cdr cell))) | |
813 | (setq cell (cdr cell))))) | |
814 | ;; Final cleanup, remove major mode cell if last keyword | |
815 | ;; was deleted. | |
816 | (if (null (cdr top-cell)) | |
817 | (setq font-lock-keywords-alist | |
818 | (delq top-cell font-lock-keywords-alist)))) | |
819 | ;; Remember the keyword in case it is not local. | |
6e1d0d15 | 820 | (let ((cell (assq mode font-lock-removed-keywords-alist))) |
76f5e2af GM |
821 | (if cell |
822 | (unless (member keyword (cdr cell)) | |
823 | (nconc cell (list keyword))) | |
6e1d0d15 SM |
824 | (push (cons mode (list keyword)) |
825 | font-lock-removed-keywords-alist)))))) | |
826 | (t | |
827 | ;; Otherwise remove it immediately. | |
828 | (font-lock-set-defaults) | |
69968400 RS |
829 | (let ((was-compiled (eq (car font-lock-keywords) t))) |
830 | ;; Bring back the user-level (uncompiled) keywords. | |
831 | (if was-compiled | |
832 | (setq font-lock-keywords (cadr font-lock-keywords))) | |
833 | ||
834 | ;; Edit them. | |
835 | (setq font-lock-keywords (copy-sequence font-lock-keywords)) | |
836 | (dolist (keyword keywords) | |
837 | (setq font-lock-keywords | |
838 | (delete keyword font-lock-keywords))) | |
839 | ||
840 | ;; If the keywords were compiled before, compile them again. | |
841 | (if was-compiled | |
e0be77f6 | 842 | (setq font-lock-keywords |
533047c2 | 843 | (font-lock-compile-keywords font-lock-keywords))))))) |
a2b8e66b | 844 | \f |
2d63aa67 SM |
845 | ;;; Font Lock Support mode. |
846 | ||
5aa29679 RS |
847 | ;; This is the code used to interface font-lock.el with any of its add-on |
848 | ;; packages, and provide the user interface. Packages that have their own | |
849 | ;; local buffer fontification functions (see below) may have to call | |
850 | ;; `font-lock-after-fontify-buffer' and/or `font-lock-after-unfontify-buffer' | |
851 | ;; themselves. | |
852 | ||
5f999b0b | 853 | (defcustom font-lock-support-mode 'jit-lock-mode |
9201cc28 | 854 | "Support mode for Font Lock mode. |
5aa29679 | 855 | Support modes speed up Font Lock mode by being choosy about when fontification |
59442c80 RS |
856 | occurs. The default support mode, Just-in-time Lock mode (symbol |
857 | `jit-lock-mode'), is recommended. | |
858 | ||
859 | Other, older support modes are Fast Lock mode (symbol `fast-lock-mode') and | |
860 | Lazy Lock mode (symbol `lazy-lock-mode'). See those modes for more info. | |
861 | However, they are no longer recommended, as Just-in-time Lock mode is better. | |
862 | ||
5aa29679 RS |
863 | If nil, means support for Font Lock mode is never performed. |
864 | If a symbol, use that support mode. | |
865 | If a list, each element should be of the form (MAJOR-MODE . SUPPORT-MODE), | |
866 | where MAJOR-MODE is a symbol or t (meaning the default). For example: | |
867 | ((c-mode . fast-lock-mode) (c++-mode . fast-lock-mode) (t . lazy-lock-mode)) | |
868 | means that Fast Lock mode is used to support Font Lock mode for buffers in C or | |
869 | C++ modes, and Lazy Lock mode is used to support Font Lock mode otherwise. | |
870 | ||
55015061 | 871 | The value of this variable is used when Font Lock mode is turned on." |
b34aa0a3 SM |
872 | :type '(choice (const :tag "none" nil) |
873 | (const :tag "fast lock" fast-lock-mode) | |
874 | (const :tag "lazy lock" lazy-lock-mode) | |
e7f07c2c | 875 | (const :tag "jit lock" jit-lock-mode) |
b34aa0a3 | 876 | (repeat :menu-tag "mode specific" :tag "mode specific" |
1c172af4 | 877 | :value ((t . jit-lock-mode)) |
b34aa0a3 SM |
878 | (cons :tag "Instance" |
879 | (radio :tag "Mode" | |
880 | (const :tag "all" t) | |
881 | (symbol :tag "name")) | |
39df451b SM |
882 | (radio :tag "Support" |
883 | (const :tag "none" nil) | |
b34aa0a3 | 884 | (const :tag "fast lock" fast-lock-mode) |
e7f07c2c GM |
885 | (const :tag "lazy lock" lazy-lock-mode) |
886 | (const :tag "JIT lock" jit-lock-mode))) | |
b34aa0a3 | 887 | )) |
c69e5fcd | 888 | :version "21.1" |
55015061 | 889 | :group 'font-lock) |
5aa29679 | 890 | |
7f0d55f2 SM |
891 | (defvar fast-lock-mode) |
892 | (defvar lazy-lock-mode) | |
893 | (defvar jit-lock-mode) | |
2e6a15fc | 894 | |
2c52d7a3 GM |
895 | (declare-function fast-lock-after-fontify-buffer "fast-lock") |
896 | (declare-function fast-lock-after-unfontify-buffer "fast-lock") | |
897 | (declare-function fast-lock-mode "fast-lock") | |
898 | (declare-function lazy-lock-after-fontify-buffer "lazy-lock") | |
899 | (declare-function lazy-lock-after-unfontify-buffer "lazy-lock") | |
900 | (declare-function lazy-lock-mode "lazy-lock") | |
e8ffb999 | 901 | |
5aa29679 RS |
902 | (defun font-lock-turn-on-thing-lock () |
903 | (let ((thing-mode (font-lock-value-in-major-mode font-lock-support-mode))) | |
904 | (cond ((eq thing-mode 'fast-lock-mode) | |
905 | (fast-lock-mode t)) | |
906 | ((eq thing-mode 'lazy-lock-mode) | |
e7f07c2c GM |
907 | (lazy-lock-mode t)) |
908 | ((eq thing-mode 'jit-lock-mode) | |
28a53bc1 SM |
909 | ;; Prepare for jit-lock |
910 | (remove-hook 'after-change-functions | |
911 | 'font-lock-after-change-function t) | |
912 | (set (make-local-variable 'font-lock-fontify-buffer-function) | |
fd612dd9 | 913 | 'jit-lock-refontify) |
c711faac | 914 | ;; Don't fontify eagerly (and don't abort if the buffer is large). |
28a53bc1 SM |
915 | (set (make-local-variable 'font-lock-fontified) t) |
916 | ;; Use jit-lock. | |
917 | (jit-lock-register 'font-lock-fontify-region | |
4cffd221 SM |
918 | (not font-lock-keywords-only)) |
919 | ;; Tell jit-lock how we extend the region to refontify. | |
920 | (add-hook 'jit-lock-after-change-extend-region-functions | |
921 | 'font-lock-extend-jit-lock-region-after-change | |
922 | nil t))))) | |
5aa29679 | 923 | |
5aa29679 | 924 | (defun font-lock-turn-off-thing-lock () |
2124318a | 925 | (cond ((bound-and-true-p fast-lock-mode) |
1c172af4 | 926 | (fast-lock-mode -1)) |
2124318a | 927 | ((bound-and-true-p jit-lock-mode) |
28a53bc1 SM |
928 | (jit-lock-unregister 'font-lock-fontify-region) |
929 | ;; Reset local vars to the non-jit-lock case. | |
930 | (kill-local-variable 'font-lock-fontify-buffer-function)) | |
2124318a | 931 | ((bound-and-true-p lazy-lock-mode) |
1c172af4 | 932 | (lazy-lock-mode -1)))) |
5aa29679 RS |
933 | |
934 | (defun font-lock-after-fontify-buffer () | |
2124318a | 935 | (cond ((bound-and-true-p fast-lock-mode) |
5aa29679 | 936 | (fast-lock-after-fontify-buffer)) |
13f0d185 SM |
937 | ;; Useless now that jit-lock intercepts font-lock-fontify-buffer. -sm |
938 | ;; (jit-lock-mode | |
939 | ;; (jit-lock-after-fontify-buffer)) | |
2124318a | 940 | ((bound-and-true-p lazy-lock-mode) |
5aa29679 RS |
941 | (lazy-lock-after-fontify-buffer)))) |
942 | ||
943 | (defun font-lock-after-unfontify-buffer () | |
2124318a | 944 | (cond ((bound-and-true-p fast-lock-mode) |
5aa29679 | 945 | (fast-lock-after-unfontify-buffer)) |
13f0d185 SM |
946 | ;; Useless as well. It's only called when: |
947 | ;; - turning off font-lock: it does not matter if we leave spurious | |
948 | ;; `fontified' text props around since jit-lock-mode is also off. | |
949 | ;; - font-lock-default-fontify-buffer fails: this is not run | |
950 | ;; any more anyway. -sm | |
5e9e032a | 951 | ;; |
13f0d185 SM |
952 | ;; (jit-lock-mode |
953 | ;; (jit-lock-after-unfontify-buffer)) | |
2124318a | 954 | ((bound-and-true-p lazy-lock-mode) |
5aa29679 RS |
955 | (lazy-lock-after-unfontify-buffer)))) |
956 | ||
2d63aa67 | 957 | ;;; End of Font Lock Support mode. |
5aa29679 | 958 | \f |
2d63aa67 | 959 | ;;; Fontification functions. |
a1eb1cf1 | 960 | |
56fcbd7e SM |
961 | ;; Rather than the function, e.g., `font-lock-fontify-region' containing the |
962 | ;; code to fontify a region, the function runs the function whose name is the | |
963 | ;; value of the variable, e.g., `font-lock-fontify-region-function'. Normally, | |
964 | ;; the value of this variable is, e.g., `font-lock-default-fontify-region' | |
965 | ;; which does contain the code to fontify a region. However, the value of the | |
966 | ;; variable could be anything and thus, e.g., `font-lock-fontify-region' could | |
967 | ;; do anything. The indirection of the fontification functions gives major | |
968 | ;; modes the capability of modifying the way font-lock.el fontifies. Major | |
969 | ;; modes can modify the values of, e.g., `font-lock-fontify-region-function', | |
970 | ;; via the variable `font-lock-defaults'. | |
971 | ;; | |
972 | ;; For example, Rmail mode sets the variable `font-lock-defaults' so that | |
973 | ;; font-lock.el uses its own function for buffer fontification. This function | |
974 | ;; makes fontification be on a message-by-message basis and so visiting an | |
975 | ;; RMAIL file is much faster. A clever implementation of the function might | |
976 | ;; fontify the headers differently than the message body. (It should, and | |
977 | ;; correspondingly for Mail mode, but I can't be bothered to do the work. Can | |
978 | ;; you?) This hints at a more interesting use... | |
979 | ;; | |
980 | ;; Languages that contain text normally contained in different major modes | |
981 | ;; could define their own fontification functions that treat text differently | |
982 | ;; depending on its context. For example, Perl mode could arrange that here | |
983 | ;; docs are fontified differently than Perl code. Or Yacc mode could fontify | |
984 | ;; rules one way and C code another. Neat! | |
985 | ;; | |
986 | ;; A further reason to use the fontification indirection feature is when the | |
987 | ;; default syntactual fontification, or the default fontification in general, | |
988 | ;; is not flexible enough for a particular major mode. For example, perhaps | |
55015061 SM |
989 | ;; comments are just too hairy for `font-lock-fontify-syntactically-region' to |
990 | ;; cope with. You need to write your own version of that function, e.g., | |
991 | ;; `hairy-fontify-syntactically-region', and make your own version of | |
992 | ;; `hairy-fontify-region' call that function before calling | |
56fcbd7e SM |
993 | ;; `font-lock-fontify-keywords-region' for the normal regexp fontification |
994 | ;; pass. And Hairy mode would set `font-lock-defaults' so that font-lock.el | |
995 | ;; would call your region fontification function instead of its own. For | |
55015061 | 996 | ;; example, TeX modes could fontify {\foo ...} and \bar{...} etc. multi-line |
56fcbd7e SM |
997 | ;; directives correctly and cleanly. (It is the same problem as fontifying |
998 | ;; multi-line strings and comments; regexps are not appropriate for the job.) | |
999 | ||
ab0dd59c | 1000 | (defvar font-lock-extend-after-change-region-function nil |
1402611c | 1001 | "A function that determines the region to refontify after a change. |
2821e1b6 SM |
1002 | |
1003 | This variable is either nil, or is a function that determines the | |
1004 | region to refontify after a change. | |
1005 | It is usually set by the major mode via `font-lock-defaults'. | |
1006 | Font-lock calls this function after each buffer change. | |
1007 | ||
1008 | The function is given three parameters, the standard BEG, END, and OLD-LEN | |
1009 | from `after-change-functions'. It should return either a cons of the beginning | |
1402611c | 1010 | and end buffer positions \(in that order) of the region to refontify, or nil |
ab0dd59c SM |
1011 | \(which directs the caller to fontify a default region). |
1012 | This function should preserve the match-data. | |
2821e1b6 | 1013 | The region it returns may start or end in the middle of a line.") |
96bdb5cf | 1014 | (make-variable-buffer-local 'font-lock-extend-after-change-region-function) |
2821e1b6 | 1015 | |
030f4a35 | 1016 | (defun font-lock-fontify-buffer () |
019f00d8 | 1017 | "Fontify the current buffer the way the function `font-lock-mode' would." |
030f4a35 | 1018 | (interactive) |
1c360af3 | 1019 | (font-lock-set-defaults) |
a2b8e66b SM |
1020 | (let ((font-lock-verbose (or font-lock-verbose (interactive-p)))) |
1021 | (funcall font-lock-fontify-buffer-function))) | |
1022 | ||
1023 | (defun font-lock-unfontify-buffer () | |
1024 | (funcall font-lock-unfontify-buffer-function)) | |
1025 | ||
1026 | (defun font-lock-fontify-region (beg end &optional loudly) | |
1c360af3 | 1027 | (font-lock-set-defaults) |
a2b8e66b SM |
1028 | (funcall font-lock-fontify-region-function beg end loudly)) |
1029 | ||
1030 | (defun font-lock-unfontify-region (beg end) | |
516eb29c SM |
1031 | (save-buffer-state nil |
1032 | (funcall font-lock-unfontify-region-function beg end))) | |
a2b8e66b SM |
1033 | |
1034 | (defun font-lock-default-fontify-buffer () | |
5aa29679 RS |
1035 | (let ((verbose (if (numberp font-lock-verbose) |
1036 | (> (buffer-size) font-lock-verbose) | |
1037 | font-lock-verbose))) | |
79f238c9 | 1038 | (with-temp-message |
1787769b SM |
1039 | (when verbose |
1040 | (format "Fontifying %s..." (buffer-name))) | |
79f238c9 SM |
1041 | ;; Make sure we fontify etc. in the whole buffer. |
1042 | (save-restriction | |
1043 | (widen) | |
1044 | (condition-case nil | |
1045 | (save-excursion | |
1046 | (save-match-data | |
1047 | (font-lock-fontify-region (point-min) (point-max) verbose) | |
1048 | (font-lock-after-fontify-buffer) | |
1049 | (setq font-lock-fontified t))) | |
1050 | ;; We don't restore the old fontification, so it's best to unfontify. | |
8259bf10 | 1051 | (quit (font-lock-unfontify-buffer))))))) |
7d7d915a | 1052 | |
a2b8e66b | 1053 | (defun font-lock-default-unfontify-buffer () |
56fcbd7e | 1054 | ;; Make sure we unfontify etc. in the whole buffer. |
a2b8e66b SM |
1055 | (save-restriction |
1056 | (widen) | |
1057 | (font-lock-unfontify-region (point-min) (point-max)) | |
271c888a | 1058 | (font-lock-after-unfontify-buffer) |
a2b8e66b | 1059 | (setq font-lock-fontified nil))) |
9bfbb130 | 1060 | |
7f0d55f2 SM |
1061 | (defvar font-lock-dont-widen nil |
1062 | "If non-nil, font-lock will work on the non-widened buffer. | |
1063 | Useful for things like RMAIL and Info where the whole buffer is not | |
1064 | a very meaningful entity to highlight.") | |
1065 | ||
05a1066f SM |
1066 | |
1067 | (defvar font-lock-beg) (defvar font-lock-end) | |
1068 | (defvar font-lock-extend-region-functions | |
1069 | '(font-lock-extend-region-wholelines | |
1402611c SM |
1070 | ;; This use of font-lock-multiline property is unreliable but is just |
1071 | ;; a handy heuristic: in case you don't have a function that does | |
1072 | ;; /identification/ of multiline elements, you may still occasionally | |
1073 | ;; discover them by accident (or you may /identify/ them but not in all | |
1074 | ;; cases), in which case the font-lock-multiline property can help make | |
1075 | ;; sure you will properly *re*identify them during refontification. | |
05a1066f SM |
1076 | font-lock-extend-region-multiline) |
1077 | "Special hook run just before proceeding to fontify a region. | |
1078 | This is used to allow major modes to help font-lock find safe buffer positions | |
1079 | as beginning and end of the fontified region. Its most common use is to solve | |
1080 | the problem of /identification/ of multiline elements by providing a function | |
1081 | that tries to find such elements and move the boundaries such that they do | |
1082 | not fall in the middle of one. | |
1083 | Each function is called with no argument; it is expected to adjust the | |
1084 | dynamically bound variables `font-lock-beg' and `font-lock-end'; and return | |
4837b516 | 1085 | non-nil if it did make such an adjustment. |
05a1066f SM |
1086 | These functions are run in turn repeatedly until they all return nil. |
1087 | Put first the functions more likely to cause a change and cheaper to compute.") | |
1088 | ;; Mark it as a special hook which doesn't use any global setting | |
1089 | ;; (i.e. doesn't obey the element t in the buffer-local value). | |
1090 | (make-variable-buffer-local 'font-lock-extend-region-functions) | |
1091 | ||
1092 | (defun font-lock-extend-region-multiline () | |
1093 | "Move fontification boundaries away from any `font-lock-multiline' property." | |
1094 | (let ((changed nil)) | |
1095 | (when (and (> font-lock-beg (point-min)) | |
1096 | (get-text-property (1- font-lock-beg) 'font-lock-multiline)) | |
1097 | (setq changed t) | |
1098 | (setq font-lock-beg (or (previous-single-property-change | |
1099 | font-lock-beg 'font-lock-multiline) | |
1100 | (point-min)))) | |
ead4759c | 1101 | ;; |
05a1066f SM |
1102 | (when (get-text-property font-lock-end 'font-lock-multiline) |
1103 | (setq changed t) | |
1104 | (setq font-lock-end (or (text-property-any font-lock-end (point-max) | |
1105 | 'font-lock-multiline nil) | |
1106 | (point-max)))) | |
1107 | changed)) | |
ead4759c | 1108 | |
05a1066f SM |
1109 | (defun font-lock-extend-region-wholelines () |
1110 | "Move fontification boundaries to beginning of lines." | |
1111 | (let ((changed nil)) | |
1112 | (goto-char font-lock-beg) | |
dfee9538 | 1113 | (unless (bolp) |
ead4759c | 1114 | (setq changed t font-lock-beg (line-beginning-position))) |
05a1066f | 1115 | (goto-char font-lock-end) |
a3609743 SM |
1116 | (unless (bolp) |
1117 | (unless (eq font-lock-end | |
1118 | (setq font-lock-end (line-beginning-position 2))) | |
1119 | (setq changed t))) | |
05a1066f SM |
1120 | changed)) |
1121 | ||
a2b8e66b | 1122 | (defun font-lock-default-fontify-region (beg end loudly) |
ac6e572c | 1123 | (save-buffer-state |
8a2a6535 SM |
1124 | ((parse-sexp-lookup-properties |
1125 | (or parse-sexp-lookup-properties font-lock-syntactic-keywords)) | |
ac6e572c | 1126 | (old-syntax-table (syntax-table))) |
876f2438 | 1127 | (unwind-protect |
a078558d | 1128 | (save-restriction |
7f0d55f2 | 1129 | (unless font-lock-dont-widen (widen)) |
876f2438 | 1130 | ;; Use the fontification syntax table, if any. |
2e6a15fc SM |
1131 | (when font-lock-syntax-table |
1132 | (set-syntax-table font-lock-syntax-table)) | |
05a1066f SM |
1133 | ;; Extend the region to fontify so that it starts and ends at |
1134 | ;; safe places. | |
1135 | (let ((funs font-lock-extend-region-functions) | |
1136 | (font-lock-beg beg) | |
1137 | (font-lock-end end)) | |
1138 | (while funs | |
1139 | (setq funs (if (or (not (funcall (car funs))) | |
1140 | (eq funs font-lock-extend-region-functions)) | |
1141 | (cdr funs) | |
1142 | ;; If there's been a change, we should go through | |
1143 | ;; the list again since this new position may | |
1144 | ;; warrant a different answer from one of the fun | |
1145 | ;; we've already seen. | |
1146 | font-lock-extend-region-functions))) | |
1147 | (setq beg font-lock-beg end font-lock-end)) | |
876f2438 | 1148 | ;; Now do the fontification. |
2e6a15fc | 1149 | (font-lock-unfontify-region beg end) |
ac6e572c SM |
1150 | (when font-lock-syntactic-keywords |
1151 | (font-lock-fontify-syntactic-keywords-region beg end)) | |
2e6a15fc | 1152 | (unless font-lock-keywords-only |
876f2438 SM |
1153 | (font-lock-fontify-syntactically-region beg end loudly)) |
1154 | (font-lock-fontify-keywords-region beg end loudly)) | |
1155 | ;; Clean up. | |
2e6a15fc | 1156 | (set-syntax-table old-syntax-table)))) |
9bfbb130 SM |
1157 | |
1158 | ;; The following must be rethought, since keywords can override fontification. | |
5d4247d3 SM |
1159 | ;; ;; Now scan for keywords, but not if we are inside a comment now. |
1160 | ;; (or (and (not font-lock-keywords-only) | |
1161 | ;; (let ((state (parse-partial-sexp beg end nil nil | |
1162 | ;; font-lock-cache-state))) | |
1163 | ;; (or (nth 4 state) (nth 7 state)))) | |
1164 | ;; (font-lock-fontify-keywords-region beg end)) | |
9bfbb130 | 1165 | |
8259bf10 SM |
1166 | (defvar font-lock-extra-managed-props nil |
1167 | "Additional text properties managed by font-lock. | |
1168 | This is used by `font-lock-default-unfontify-region' to decide | |
4c02ca46 | 1169 | what properties to clear before refontifying a region.") |
8259bf10 | 1170 | |
a2b8e66b | 1171 | (defun font-lock-default-unfontify-region (beg end) |
516eb29c SM |
1172 | (remove-list-of-text-properties |
1173 | beg end (append | |
1174 | font-lock-extra-managed-props | |
1175 | (if font-lock-syntactic-keywords | |
1176 | '(syntax-table face font-lock-multiline) | |
1177 | '(face font-lock-multiline))))) | |
9bfbb130 SM |
1178 | |
1179 | ;; Called when any modification is made to buffer text. | |
1180 | (defun font-lock-after-change-function (beg end old-len) | |
ab0dd59c SM |
1181 | (save-excursion |
1182 | (let ((inhibit-point-motion-hooks t) | |
1183 | (inhibit-quit t) | |
1184 | (region (if font-lock-extend-after-change-region-function | |
1185 | (funcall font-lock-extend-after-change-region-function | |
1186 | beg end old-len)))) | |
46f26fcf | 1187 | (save-match-data |
ef008321 AM |
1188 | (if region |
1189 | ;; Fontify the region the major mode has specified. | |
1190 | (setq beg (car region) end (cdr region)) | |
1191 | ;; Fontify the whole lines which enclose the region. | |
ab0dd59c SM |
1192 | ;; Actually, this is not needed because |
1193 | ;; font-lock-default-fontify-region already rounds up to a whole | |
1194 | ;; number of lines. | |
1195 | ;; (setq beg (progn (goto-char beg) (line-beginning-position)) | |
1196 | ;; end (progn (goto-char end) (line-beginning-position 2))) | |
efa0c0ef SM |
1197 | (unless (eq end (point-max)) |
1198 | ;; Rounding up to a whole number of lines should include the | |
1199 | ;; line right after `end'. Typical case: the first char of | |
1200 | ;; the line was deleted. Or a \n was inserted in the middle | |
1201 | ;; of a line. | |
1202 | (setq end (1+ end)))) | |
ef008321 | 1203 | (font-lock-fontify-region beg end))))) |
a2b8e66b | 1204 | |
4cffd221 SM |
1205 | (defvar jit-lock-start) (defvar jit-lock-end) |
1206 | (defun font-lock-extend-jit-lock-region-after-change (beg end old-len) | |
65c986aa SM |
1207 | "Function meant for `jit-lock-after-change-extend-region-functions'. |
1208 | This function does 2 things: | |
1209 | - extend the region so that it not only includes the part that was modified | |
1210 | but also the surrounding text whose highlighting may change as a consequence. | |
1211 | - anticipate (part of) the region extension that will happen later in | |
1212 | `font-lock-default-fontify-region', in order to avoid the need for | |
1213 | double-redisplay in `jit-lock-fontify-now'." | |
ab0dd59c SM |
1214 | (save-excursion |
1215 | ;; First extend the region as font-lock-after-change-function would. | |
1216 | (let ((region (if font-lock-extend-after-change-region-function | |
1217 | (funcall font-lock-extend-after-change-region-function | |
1218 | beg end old-len)))) | |
1219 | (if region | |
1220 | (setq beg (min jit-lock-start (car region)) | |
1221 | end (max jit-lock-end (cdr region)))) | |
1222 | ;; Then extend the region obeying font-lock-multiline properties, | |
1223 | ;; indicating which part of the buffer needs to be refontified. | |
1402611c SM |
1224 | ;; !!! This is the *main* user of font-lock-multiline property !!! |
1225 | ;; font-lock-after-change-function could/should also do that, but it | |
1226 | ;; doesn't need to because font-lock-default-fontify-region does | |
1227 | ;; it anyway. Here OTOH we have no guarantee that | |
1228 | ;; font-lock-default-fontify-region will be executed on this region | |
1229 | ;; any time soon. | |
10412e63 SM |
1230 | ;; Note: contrary to font-lock-default-fontify-region, we do not do |
1231 | ;; any loop here because we are not looking for a safe spot: we just | |
1232 | ;; mark the text whose appearance may need to change as a result of | |
1233 | ;; the buffer modification. | |
ab0dd59c SM |
1234 | (when (and (> beg (point-min)) |
1235 | (get-text-property (1- beg) 'font-lock-multiline)) | |
1236 | (setq beg (or (previous-single-property-change | |
1237 | beg 'font-lock-multiline) | |
1238 | (point-min)))) | |
efa0c0ef SM |
1239 | (when (< end (point-max)) |
1240 | (setq end | |
1241 | (if (get-text-property end 'font-lock-multiline) | |
1242 | (or (text-property-any end (point-max) | |
1243 | 'font-lock-multiline nil) | |
1244 | (point-max)) | |
1245 | ;; Rounding up to a whole number of lines should include the | |
1246 | ;; line right after `end'. Typical case: the first char of | |
1247 | ;; the line was deleted. Or a \n was inserted in the middle | |
1248 | ;; of a line. | |
1249 | (1+ end)))) | |
ab0dd59c | 1250 | ;; Finally, pre-enlarge the region to a whole number of lines, to try |
65c986aa | 1251 | ;; and anticipate what font-lock-default-fontify-region will do, so as to |
ab0dd59c | 1252 | ;; avoid double-redisplay. |
65c986aa SM |
1253 | ;; We could just run `font-lock-extend-region-functions', but since |
1254 | ;; the only purpose is to avoid the double-redisplay, we prefer to | |
1255 | ;; do here only the part that is cheap and most likely to be useful. | |
05a1066f SM |
1256 | (when (memq 'font-lock-extend-region-wholelines |
1257 | font-lock-extend-region-functions) | |
1258 | (goto-char beg) | |
efa0c0ef | 1259 | (setq jit-lock-start (min jit-lock-start (line-beginning-position))) |
05a1066f | 1260 | (goto-char end) |
efa0c0ef SM |
1261 | (setq jit-lock-end |
1262 | (max jit-lock-end | |
1263 | (if (bolp) (point) (line-beginning-position 2)))))))) | |
4cffd221 | 1264 | |
a078558d SM |
1265 | (defun font-lock-fontify-block (&optional arg) |
1266 | "Fontify some lines the way `font-lock-fontify-buffer' would. | |
1267 | The lines could be a function or paragraph, or a specified number of lines. | |
a078558d | 1268 | If ARG is given, fontify that many lines before and after point, or 16 lines if |
a465832f SM |
1269 | no ARG is given and `font-lock-mark-block-function' is nil. |
1270 | If `font-lock-mark-block-function' non-nil and no ARG is given, it is used to | |
1271 | delimit the region to fontify." | |
a078558d | 1272 | (interactive "P") |
46f26fcf SM |
1273 | (let ((inhibit-point-motion-hooks t) font-lock-beginning-of-syntax-function |
1274 | deactivate-mark) | |
a078558d SM |
1275 | ;; Make sure we have the right `font-lock-keywords' etc. |
1276 | (if (not font-lock-mode) (font-lock-set-defaults)) | |
a2b8e66b SM |
1277 | (save-excursion |
1278 | (save-match-data | |
1279 | (condition-case error-data | |
a078558d SM |
1280 | (if (or arg (not font-lock-mark-block-function)) |
1281 | (let ((lines (if arg (prefix-numeric-value arg) 16))) | |
1282 | (font-lock-fontify-region | |
1283 | (save-excursion (forward-line (- lines)) (point)) | |
1284 | (save-excursion (forward-line lines) (point)))) | |
1285 | (funcall font-lock-mark-block-function) | |
1286 | (font-lock-fontify-region (point) (mark))) | |
6c0fc428 | 1287 | ((error quit) (message "Fontifying block...%s" error-data))))))) |
a078558d | 1288 | |
2d63aa67 | 1289 | ;;; End of Fontification functions. |
9bfbb130 | 1290 | \f |
9bfbb130 SM |
1291 | ;;; Additional text property functions. |
1292 | ||
1c626aaf SM |
1293 | ;; The following text property functions should be builtins. This means they |
1294 | ;; should be written in C and put with all the other text property functions. | |
1295 | ;; In the meantime, those that are used by font-lock.el are defined in Lisp | |
1296 | ;; below and given a `font-lock-' prefix. Those that are not used are defined | |
1297 | ;; in Lisp below and commented out. sm. | |
9bfbb130 | 1298 | |
1c626aaf | 1299 | (defun font-lock-prepend-text-property (start end prop value &optional object) |
9bfbb130 SM |
1300 | "Prepend to one property of the text from START to END. |
1301 | Arguments PROP and VALUE specify the property and value to prepend to the value | |
1c626aaf | 1302 | already in place. The resulting property values are always lists. |
9bfbb130 SM |
1303 | Optional argument OBJECT is the string or buffer containing the text." |
1304 | (let ((val (if (listp value) value (list value))) next prev) | |
1305 | (while (/= start end) | |
1306 | (setq next (next-single-property-change start prop object end) | |
1307 | prev (get-text-property start prop object)) | |
4fed1740 RS |
1308 | ;; Canonicalize old forms of face property. |
1309 | (and (memq prop '(face font-lock-face)) | |
1310 | (listp prev) | |
1311 | (or (keywordp (car prev)) | |
1312 | (memq (car prev) '(foreground-color background-color))) | |
1313 | (setq prev (list prev))) | |
1c626aaf SM |
1314 | (put-text-property start next prop |
1315 | (append val (if (listp prev) prev (list prev))) | |
1316 | object) | |
9bfbb130 SM |
1317 | (setq start next)))) |
1318 | ||
1c626aaf | 1319 | (defun font-lock-append-text-property (start end prop value &optional object) |
9bfbb130 SM |
1320 | "Append to one property of the text from START to END. |
1321 | Arguments PROP and VALUE specify the property and value to append to the value | |
1c626aaf | 1322 | already in place. The resulting property values are always lists. |
9bfbb130 SM |
1323 | Optional argument OBJECT is the string or buffer containing the text." |
1324 | (let ((val (if (listp value) value (list value))) next prev) | |
1325 | (while (/= start end) | |
1326 | (setq next (next-single-property-change start prop object end) | |
1327 | prev (get-text-property start prop object)) | |
4fed1740 RS |
1328 | ;; Canonicalize old forms of face property. |
1329 | (and (memq prop '(face font-lock-face)) | |
1330 | (listp prev) | |
1331 | (or (keywordp (car prev)) | |
1332 | (memq (car prev) '(foreground-color background-color))) | |
1333 | (setq prev (list prev))) | |
1c626aaf SM |
1334 | (put-text-property start next prop |
1335 | (append (if (listp prev) prev (list prev)) val) | |
1336 | object) | |
9bfbb130 | 1337 | (setq start next)))) |
1c626aaf SM |
1338 | |
1339 | (defun font-lock-fillin-text-property (start end prop value &optional object) | |
1340 | "Fill in one property of the text from START to END. | |
1341 | Arguments PROP and VALUE specify the property and value to put where none are | |
1342 | already in place. Therefore existing property values are not overwritten. | |
1343 | Optional argument OBJECT is the string or buffer containing the text." | |
1344 | (let ((start (text-property-any start end prop nil object)) next) | |
1345 | (while start | |
1346 | (setq next (next-single-property-change start prop object end)) | |
1347 | (put-text-property start next prop value object) | |
1348 | (setq start (text-property-any next end prop nil object))))) | |
1349 | ||
1350 | ;; For completeness: this is to `remove-text-properties' as `put-text-property' | |
1351 | ;; is to `add-text-properties', etc. | |
d55c4199 SM |
1352 | ;;(defun remove-text-property (start end property &optional object) |
1353 | ;; "Remove a property from text from START to END. | |
1354 | ;;Argument PROPERTY is the property to remove. | |
1355 | ;;Optional argument OBJECT is the string or buffer containing the text. | |
1356 | ;;Return t if the property was actually removed, nil otherwise." | |
1357 | ;; (remove-text-properties start end (list property) object)) | |
1c626aaf SM |
1358 | |
1359 | ;; For consistency: maybe this should be called `remove-single-property' like | |
1360 | ;; `next-single-property-change' (not `next-single-text-property-change'), etc. | |
d55c4199 SM |
1361 | ;;(defun remove-single-text-property (start end prop value &optional object) |
1362 | ;; "Remove a specific property value from text from START to END. | |
1363 | ;;Arguments PROP and VALUE specify the property and value to remove. The | |
1364 | ;;resulting property values are not equal to VALUE nor lists containing VALUE. | |
1365 | ;;Optional argument OBJECT is the string or buffer containing the text." | |
1366 | ;; (let ((start (text-property-not-all start end prop nil object)) next prev) | |
1367 | ;; (while start | |
1368 | ;; (setq next (next-single-property-change start prop object end) | |
1369 | ;; prev (get-text-property start prop object)) | |
1370 | ;; (cond ((and (symbolp prev) (eq value prev)) | |
1371 | ;; (remove-text-property start next prop object)) | |
1372 | ;; ((and (listp prev) (memq value prev)) | |
1373 | ;; (let ((new (delq value prev))) | |
1374 | ;; (cond ((null new) | |
1375 | ;; (remove-text-property start next prop object)) | |
1376 | ;; ((= (length new) 1) | |
1377 | ;; (put-text-property start next prop (car new) object)) | |
1378 | ;; (t | |
1379 | ;; (put-text-property start next prop new object)))))) | |
1380 | ;; (setq start (text-property-not-all next end prop nil object))))) | |
2d63aa67 SM |
1381 | |
1382 | ;;; End of Additional text property functions. | |
9bfbb130 | 1383 | \f |
ac6e572c SM |
1384 | ;;; Syntactic regexp fontification functions. |
1385 | ||
1386 | ;; These syntactic keyword pass functions are identical to those keyword pass | |
1387 | ;; functions below, with the following exceptions; (a) they operate on | |
1388 | ;; `font-lock-syntactic-keywords' of course, (b) they are all `defun' as speed | |
1389 | ;; is less of an issue, (c) eval of property value does not occur JIT as speed | |
1390 | ;; is less of an issue, (d) OVERRIDE cannot be `prepend' or `append' as it | |
1391 | ;; makes no sense for `syntax-table' property values, (e) they do not do it | |
1392 | ;; LOUDLY as it is not likely to be intensive. | |
1393 | ||
1394 | (defun font-lock-apply-syntactic-highlight (highlight) | |
1395 | "Apply HIGHLIGHT following a match. | |
1396 | HIGHLIGHT should be of the form MATCH-HIGHLIGHT, | |
1397 | see `font-lock-syntactic-keywords'." | |
1398 | (let* ((match (nth 0 highlight)) | |
1399 | (start (match-beginning match)) (end (match-end match)) | |
1400 | (value (nth 1 highlight)) | |
1401 | (override (nth 2 highlight))) | |
8259bf10 SM |
1402 | (if (not start) |
1403 | ;; No match but we might not signal an error. | |
1404 | (or (nth 3 highlight) | |
1405 | (error "No match %d in highlight %S" match highlight)) | |
1406 | (when (and (consp value) (not (numberp (car value)))) | |
1407 | (setq value (eval value))) | |
1408 | (when (stringp value) (setq value (string-to-syntax value))) | |
1409 | ;; Flush the syntax-cache. I believe this is not necessary for | |
1410 | ;; font-lock's use of syntax-ppss, but I'm not 100% sure and it can | |
1411 | ;; still be necessary for other users of syntax-ppss anyway. | |
1412 | (syntax-ppss-after-change-function start) | |
1413 | (cond | |
1414 | ((not override) | |
1415 | ;; Cannot override existing fontification. | |
1416 | (or (text-property-not-all start end 'syntax-table nil) | |
1417 | (put-text-property start end 'syntax-table value))) | |
1418 | ((eq override t) | |
1419 | ;; Override existing fontification. | |
1420 | (put-text-property start end 'syntax-table value)) | |
1421 | ((eq override 'keep) | |
1422 | ;; Keep existing fontification. | |
1423 | (font-lock-fillin-text-property start end 'syntax-table value)))))) | |
ac6e572c SM |
1424 | |
1425 | (defun font-lock-fontify-syntactic-anchored-keywords (keywords limit) | |
1426 | "Fontify according to KEYWORDS until LIMIT. | |
1427 | KEYWORDS should be of the form MATCH-ANCHORED, see `font-lock-keywords', | |
1428 | LIMIT can be modified by the value of its PRE-MATCH-FORM." | |
1429 | (let ((matcher (nth 0 keywords)) (lowdarks (nthcdr 3 keywords)) highlights | |
1430 | ;; Evaluate PRE-MATCH-FORM. | |
1431 | (pre-match-value (eval (nth 1 keywords)))) | |
1432 | ;; Set LIMIT to value of PRE-MATCH-FORM or the end of line. | |
1433 | (if (and (numberp pre-match-value) (> pre-match-value (point))) | |
1434 | (setq limit pre-match-value) | |
6e1d0d15 | 1435 | (setq limit (line-end-position))) |
ac6e572c SM |
1436 | (save-match-data |
1437 | ;; Find an occurrence of `matcher' before `limit'. | |
1438 | (while (if (stringp matcher) | |
1439 | (re-search-forward matcher limit t) | |
1440 | (funcall matcher limit)) | |
1441 | ;; Apply each highlight to this instance of `matcher'. | |
1442 | (setq highlights lowdarks) | |
1443 | (while highlights | |
1444 | (font-lock-apply-syntactic-highlight (car highlights)) | |
1445 | (setq highlights (cdr highlights))))) | |
1446 | ;; Evaluate POST-MATCH-FORM. | |
1447 | (eval (nth 2 keywords)))) | |
1448 | ||
1449 | (defun font-lock-fontify-syntactic-keywords-region (start end) | |
1450 | "Fontify according to `font-lock-syntactic-keywords' between START and END. | |
1451 | START should be at the beginning of a line." | |
c0a6a9fe SM |
1452 | ;; Ensure the beginning of the file is properly syntactic-fontified. |
1453 | (when (and font-lock-syntactically-fontified | |
1454 | (< font-lock-syntactically-fontified start)) | |
1455 | (setq start (max font-lock-syntactically-fontified (point-min))) | |
1456 | (setq font-lock-syntactically-fontified end)) | |
ac6e572c SM |
1457 | ;; If `font-lock-syntactic-keywords' is a symbol, get the real keywords. |
1458 | (when (symbolp font-lock-syntactic-keywords) | |
1459 | (setq font-lock-syntactic-keywords (font-lock-eval-keywords | |
1460 | font-lock-syntactic-keywords))) | |
1461 | ;; If `font-lock-syntactic-keywords' is not compiled, compile it. | |
1462 | (unless (eq (car font-lock-syntactic-keywords) t) | |
1463 | (setq font-lock-syntactic-keywords (font-lock-compile-keywords | |
533047c2 RS |
1464 | font-lock-syntactic-keywords |
1465 | t))) | |
ac6e572c SM |
1466 | ;; Get down to business. |
1467 | (let ((case-fold-search font-lock-keywords-case-fold-search) | |
0715d1a4 | 1468 | (keywords (cddr font-lock-syntactic-keywords)) |
ac6e572c SM |
1469 | keyword matcher highlights) |
1470 | (while keywords | |
1471 | ;; Find an occurrence of `matcher' from `start' to `end'. | |
1472 | (setq keyword (car keywords) matcher (car keyword)) | |
1473 | (goto-char start) | |
1474 | (while (if (stringp matcher) | |
1475 | (re-search-forward matcher end t) | |
1476 | (funcall matcher end)) | |
1477 | ;; Apply each highlight to this instance of `matcher', which may be | |
1478 | ;; specific highlights or more keywords anchored to `matcher'. | |
1479 | (setq highlights (cdr keyword)) | |
1480 | (while highlights | |
1481 | (if (numberp (car (car highlights))) | |
1482 | (font-lock-apply-syntactic-highlight (car highlights)) | |
1483 | (font-lock-fontify-syntactic-anchored-keywords (car highlights) | |
1484 | end)) | |
1485 | (setq highlights (cdr highlights)))) | |
1486 | (setq keywords (cdr keywords))))) | |
1487 | ||
1488 | ;;; End of Syntactic regexp fontification functions. | |
1489 | \f | |
1490 | ;;; Syntactic fontification functions. | |
1491 | ||
7435a76b RS |
1492 | (defvar font-lock-comment-start-skip nil |
1493 | "If non-nil, Font Lock mode uses this instead of `comment-start-skip'.") | |
1494 | ||
1495 | (defvar font-lock-comment-end-skip nil | |
1496 | "If non-nil, Font Lock mode uses this instead of `comment-end'.") | |
1497 | ||
8259bf10 | 1498 | (defun font-lock-fontify-syntactically-region (start end &optional loudly ppss) |
ac6e572c SM |
1499 | "Put proper face on each string and comment between START and END. |
1500 | START should be at the beginning of a line." | |
90cbc9cd | 1501 | (let ((comment-end-regexp |
7435a76b RS |
1502 | (or font-lock-comment-end-skip |
1503 | (regexp-quote | |
1504 | (replace-regexp-in-string "^ *" "" comment-end)))) | |
90cbc9cd | 1505 | state face beg) |
ac6e572c SM |
1506 | (if loudly (message "Fontifying %s... (syntactically...)" (buffer-name))) |
1507 | (goto-char start) | |
1508 | ;; | |
7ae3cc71 | 1509 | ;; Find the `start' state. |
47fc2db3 | 1510 | (setq state (or ppss (syntax-ppss start))) |
ac6e572c SM |
1511 | ;; |
1512 | ;; Find each interesting place between here and `end'. | |
8259bf10 SM |
1513 | (while |
1514 | (progn | |
1515 | (when (or (nth 3 state) (nth 4 state)) | |
1516 | (setq face (funcall font-lock-syntactic-face-function state)) | |
1517 | (setq beg (max (nth 8 state) start)) | |
1518 | (setq state (parse-partial-sexp (point) end nil nil state | |
1519 | 'syntax-table)) | |
a4479657 | 1520 | (when face (put-text-property beg (point) 'face face)) |
90cbc9cd | 1521 | (when (and (eq face 'font-lock-comment-face) |
7435a76b RS |
1522 | (or font-lock-comment-start-skip |
1523 | comment-start-skip)) | |
a4479657 RS |
1524 | ;; Find the comment delimiters |
1525 | ;; and use font-lock-comment-delimiter-face for them. | |
1526 | (save-excursion | |
1527 | (goto-char beg) | |
7435a76b RS |
1528 | (if (looking-at (or font-lock-comment-start-skip |
1529 | comment-start-skip)) | |
a4479657 | 1530 | (put-text-property beg (match-end 0) 'face |
90cbc9cd | 1531 | font-lock-comment-delimiter-face))) |
a1594703 | 1532 | (if (looking-back comment-end-regexp (point-at-bol) t) |
a4479657 | 1533 | (put-text-property (match-beginning 0) (point) 'face |
90cbc9cd | 1534 | font-lock-comment-delimiter-face)))) |
6ce66ffe SM |
1535 | (< (point) end)) |
1536 | (setq state (parse-partial-sexp (point) end nil nil state | |
1537 | 'syntax-table))))) | |
ac6e572c SM |
1538 | |
1539 | ;;; End of Syntactic fontification functions. | |
1540 | \f | |
1541 | ;;; Keyword regexp fontification functions. | |
9bfbb130 SM |
1542 | |
1543 | (defsubst font-lock-apply-highlight (highlight) | |
1544 | "Apply HIGHLIGHT following a match. | |
1545 | HIGHLIGHT should be of the form MATCH-HIGHLIGHT, see `font-lock-keywords'." | |
1546 | (let* ((match (nth 0 highlight)) | |
1547 | (start (match-beginning match)) (end (match-end match)) | |
1548 | (override (nth 2 highlight))) | |
8259bf10 SM |
1549 | (if (not start) |
1550 | ;; No match but we might not signal an error. | |
1551 | (or (nth 3 highlight) | |
1552 | (error "No match %d in highlight %S" match highlight)) | |
1553 | (let ((val (eval (nth 1 highlight)))) | |
1554 | (when (eq (car-safe val) 'face) | |
1555 | (add-text-properties start end (cddr val)) | |
1556 | (setq val (cadr val))) | |
1557 | (cond | |
a5f48305 | 1558 | ((not (or val (eq override t))) |
6b7f3491 SM |
1559 | ;; If `val' is nil, don't do anything. It is important to do it |
1560 | ;; explicitly, because when adding nil via things like | |
1561 | ;; font-lock-append-text-property, the property is actually | |
1562 | ;; changed from <face> to (<face>) which is undesirable. --Stef | |
1563 | nil) | |
8259bf10 SM |
1564 | ((not override) |
1565 | ;; Cannot override existing fontification. | |
1566 | (or (text-property-not-all start end 'face nil) | |
1567 | (put-text-property start end 'face val))) | |
1568 | ((eq override t) | |
1569 | ;; Override existing fontification. | |
1570 | (put-text-property start end 'face val)) | |
1571 | ((eq override 'prepend) | |
1572 | ;; Prepend to existing fontification. | |
1573 | (font-lock-prepend-text-property start end 'face val)) | |
1574 | ((eq override 'append) | |
1575 | ;; Append to existing fontification. | |
1576 | (font-lock-append-text-property start end 'face val)) | |
1577 | ((eq override 'keep) | |
1578 | ;; Keep existing fontification. | |
1579 | (font-lock-fillin-text-property start end 'face val))))))) | |
9bfbb130 SM |
1580 | |
1581 | (defsubst font-lock-fontify-anchored-keywords (keywords limit) | |
1582 | "Fontify according to KEYWORDS until LIMIT. | |
56fcbd7e SM |
1583 | KEYWORDS should be of the form MATCH-ANCHORED, see `font-lock-keywords', |
1584 | LIMIT can be modified by the value of its PRE-MATCH-FORM." | |
1585 | (let ((matcher (nth 0 keywords)) (lowdarks (nthcdr 3 keywords)) highlights | |
fb0e4f8a | 1586 | (lead-start (match-beginning 0)) |
56fcbd7e SM |
1587 | ;; Evaluate PRE-MATCH-FORM. |
1588 | (pre-match-value (eval (nth 1 keywords)))) | |
1589 | ;; Set LIMIT to value of PRE-MATCH-FORM or the end of line. | |
fb0e4f8a | 1590 | (if (not (and (numberp pre-match-value) (> pre-match-value (point)))) |
6e1d0d15 | 1591 | (setq limit (line-end-position)) |
fb0e4f8a | 1592 | (setq limit pre-match-value) |
ba22aeff | 1593 | (when (and font-lock-multiline (>= limit (line-beginning-position 2))) |
fb0e4f8a | 1594 | ;; this is a multiline anchored match |
ba22aeff SM |
1595 | ;; (setq font-lock-multiline t) |
1596 | (put-text-property (if (= limit (line-beginning-position 2)) | |
1597 | (1- limit) | |
1598 | (min lead-start (point))) | |
1599 | limit | |
28a53bc1 | 1600 | 'font-lock-multiline t))) |
9bfbb130 | 1601 | (save-match-data |
876f2438 | 1602 | ;; Find an occurrence of `matcher' before `limit'. |
afa18a4e SM |
1603 | (while (and (< (point) limit) |
1604 | (if (stringp matcher) | |
1605 | (re-search-forward matcher limit t) | |
1606 | (funcall matcher limit))) | |
876f2438 | 1607 | ;; Apply each highlight to this instance of `matcher'. |
9bfbb130 SM |
1608 | (setq highlights lowdarks) |
1609 | (while highlights | |
1610 | (font-lock-apply-highlight (car highlights)) | |
1611 | (setq highlights (cdr highlights))))) | |
876f2438 | 1612 | ;; Evaluate POST-MATCH-FORM. |
9bfbb130 SM |
1613 | (eval (nth 2 keywords)))) |
1614 | ||
1615 | (defun font-lock-fontify-keywords-region (start end &optional loudly) | |
1616 | "Fontify according to `font-lock-keywords' between START and END. | |
7f0d55f2 SM |
1617 | START should be at the beginning of a line. |
1618 | LOUDLY, if non-nil, allows progress-meter bar." | |
ac6e572c | 1619 | (unless (eq (car font-lock-keywords) t) |
2d5eba0e | 1620 | (setq font-lock-keywords |
533047c2 | 1621 | (font-lock-compile-keywords font-lock-keywords))) |
9bfbb130 | 1622 | (let ((case-fold-search font-lock-keywords-case-fold-search) |
69968400 | 1623 | (keywords (cddr font-lock-keywords)) |
9bfbb130 | 1624 | (bufname (buffer-name)) (count 0) |
b71813cb | 1625 | (pos (make-marker)) |
876f2438 SM |
1626 | keyword matcher highlights) |
1627 | ;; | |
1628 | ;; Fontify each item in `font-lock-keywords' from `start' to `end'. | |
1629 | (while keywords | |
1630 | (if loudly (message "Fontifying %s... (regexps..%s)" bufname | |
2e6a15fc | 1631 | (make-string (incf count) ?.))) |
9bfbb130 | 1632 | ;; |
876f2438 SM |
1633 | ;; Find an occurrence of `matcher' from `start' to `end'. |
1634 | (setq keyword (car keywords) matcher (car keyword)) | |
1635 | (goto-char start) | |
e7f07c2c GM |
1636 | (while (and (< (point) end) |
1637 | (if (stringp matcher) | |
1638 | (re-search-forward matcher end t) | |
8a08764f SM |
1639 | (funcall matcher end)) |
1640 | ;; Beware empty string matches since they will | |
1641 | ;; loop indefinitely. | |
1642 | (or (> (point) (match-beginning 0)) | |
1643 | (progn (forward-char 1) t))) | |
041470d2 | 1644 | (when (and font-lock-multiline |
ba22aeff SM |
1645 | (>= (point) |
1646 | (save-excursion (goto-char (match-beginning 0)) | |
1647 | (forward-line 1) (point)))) | |
fb0e4f8a | 1648 | ;; this is a multiline regexp match |
ba22aeff SM |
1649 | ;; (setq font-lock-multiline t) |
1650 | (put-text-property (if (= (point) | |
1651 | (save-excursion | |
1652 | (goto-char (match-beginning 0)) | |
1653 | (forward-line 1) (point))) | |
1654 | (1- (point)) | |
1655 | (match-beginning 0)) | |
1656 | (point) | |
fb0e4f8a | 1657 | 'font-lock-multiline t)) |
876f2438 SM |
1658 | ;; Apply each highlight to this instance of `matcher', which may be |
1659 | ;; specific highlights or more keywords anchored to `matcher'. | |
1660 | (setq highlights (cdr keyword)) | |
1661 | (while highlights | |
1662 | (if (numberp (car (car highlights))) | |
1663 | (font-lock-apply-highlight (car highlights)) | |
b71813cb SM |
1664 | (set-marker pos (point)) |
1665 | (font-lock-fontify-anchored-keywords (car highlights) end) | |
1666 | ;; Ensure forward progress. `pos' is a marker because anchored | |
1667 | ;; keyword may add/delete text (this happens e.g. in grep.el). | |
1668 | (if (< (point) pos) (goto-char pos))) | |
876f2438 | 1669 | (setq highlights (cdr highlights)))) |
b71813cb SM |
1670 | (setq keywords (cdr keywords))) |
1671 | (set-marker pos nil))) | |
2d63aa67 | 1672 | |
ac6e572c | 1673 | ;;; End of Keyword regexp fontification functions. |
9bfbb130 SM |
1674 | \f |
1675 | ;; Various functions. | |
1676 | ||
533047c2 | 1677 | (defun font-lock-compile-keywords (keywords &optional syntactic-keywords) |
69968400 RS |
1678 | "Compile KEYWORDS into the form (t KEYWORDS COMPILED...) |
1679 | Here each COMPILED is of the form (MATCHER HIGHLIGHT ...) as shown in the | |
2d5eba0e | 1680 | `font-lock-keywords' doc string. |
533047c2 RS |
1681 | If SYNTACTIC-KEYWORDS is non-nil, it means these keywords are used for |
1682 | `font-lock-syntactic-keywords' rather than for `font-lock-keywords'." | |
af3d4246 SM |
1683 | (if (not font-lock-set-defaults) |
1684 | ;; This should never happen. But some external packages sometimes | |
1685 | ;; call font-lock in unexpected and incorrect ways. It's important to | |
1686 | ;; stop processing at this point, otherwise we may end up changing the | |
1687 | ;; global value of font-lock-keywords and break highlighting in many | |
1688 | ;; other buffers. | |
1689 | (error "Font-lock trying to use keywords before setting them up")) | |
55015061 SM |
1690 | (if (eq (car-safe keywords) t) |
1691 | keywords | |
69968400 RS |
1692 | (setq keywords |
1693 | (cons t (cons keywords | |
1694 | (mapcar 'font-lock-compile-keyword keywords)))) | |
533047c2 | 1695 | (if (and (not syntactic-keywords) |
9595af7e RS |
1696 | (let ((beg-function |
1697 | (or font-lock-beginning-of-syntax-function | |
1698 | syntax-begin-function))) | |
1699 | (or (eq beg-function 'beginning-of-defun) | |
1700 | (get beg-function 'font-lock-syntax-paren-check))) | |
2d5eba0e SM |
1701 | (not beginning-of-defun-function)) |
1702 | ;; Try to detect when a string or comment contains something that | |
1703 | ;; looks like a defun and would thus confuse font-lock. | |
1704 | (nconc keywords | |
1705 | `((,(if defun-prompt-regexp | |
1706 | (concat "^\\(?:" defun-prompt-regexp "\\)?\\s(") | |
1707 | "^\\s(") | |
1708 | (0 | |
048aac39 | 1709 | (if (memq (get-text-property (match-beginning 0) 'face) |
2d5eba0e SM |
1710 | '(font-lock-string-face font-lock-doc-face |
1711 | font-lock-comment-face)) | |
d55c4199 SM |
1712 | (list 'face font-lock-warning-face |
1713 | 'help-echo "Looks like a toplevel defun: escape the parenthesis")) | |
2d5eba0e SM |
1714 | prepend))))) |
1715 | keywords)) | |
a2b8e66b SM |
1716 | |
1717 | (defun font-lock-compile-keyword (keyword) | |
c1f2ffc8 | 1718 | (cond ((nlistp keyword) ; MATCHER |
a2b8e66b | 1719 | (list keyword '(0 font-lock-keyword-face))) |
c1f2ffc8 | 1720 | ((eq (car keyword) 'eval) ; (eval . FORM) |
a2b8e66b | 1721 | (font-lock-compile-keyword (eval (cdr keyword)))) |
c1f2ffc8 SM |
1722 | ((eq (car-safe (cdr keyword)) 'quote) ; (MATCHER . 'FORM) |
1723 | ;; If FORM is a FACENAME then quote it. Otherwise ignore the quote. | |
1724 | (if (symbolp (nth 2 keyword)) | |
1725 | (list (car keyword) (list 0 (cdr keyword))) | |
1726 | (font-lock-compile-keyword (cons (car keyword) (nth 2 keyword))))) | |
1727 | ((numberp (cdr keyword)) ; (MATCHER . MATCH) | |
a2b8e66b | 1728 | (list (car keyword) (list (cdr keyword) 'font-lock-keyword-face))) |
c1f2ffc8 | 1729 | ((symbolp (cdr keyword)) ; (MATCHER . FACENAME) |
a2b8e66b | 1730 | (list (car keyword) (list 0 (cdr keyword)))) |
c1f2ffc8 | 1731 | ((nlistp (nth 1 keyword)) ; (MATCHER . HIGHLIGHT) |
a2b8e66b | 1732 | (list (car keyword) (cdr keyword))) |
c1f2ffc8 | 1733 | (t ; (MATCHER HIGHLIGHT ...) |
a2b8e66b | 1734 | keyword))) |
d46c21ec | 1735 | |
ac6e572c | 1736 | (defun font-lock-eval-keywords (keywords) |
019f00d8 | 1737 | "Evalulate KEYWORDS if a function (funcall) or variable (eval) name." |
46f26fcf SM |
1738 | (if (listp keywords) |
1739 | keywords | |
1740 | (font-lock-eval-keywords (if (fboundp keywords) | |
1741 | (funcall keywords) | |
1742 | (eval keywords))))) | |
ac6e572c | 1743 | |
343204bd | 1744 | (defun font-lock-value-in-major-mode (alist) |
019f00d8 DL |
1745 | "Return value in ALIST for `major-mode', or ALIST if it is not an alist. |
1746 | Structure is ((MAJOR-MODE . VALUE) ...) where MAJOR-MODE may be t." | |
343204bd SM |
1747 | (if (consp alist) |
1748 | (cdr (or (assq major-mode alist) (assq t alist))) | |
1749 | alist)) | |
1750 | ||
d46c21ec | 1751 | (defun font-lock-choose-keywords (keywords level) |
019f00d8 DL |
1752 | "Return LEVELth element of KEYWORDS. |
1753 | A LEVEL of nil is equal to a LEVEL of 0, a LEVEL of t is equal to | |
1754 | \(1- (length KEYWORDS))." | |
fd612dd9 | 1755 | (cond ((not (and (listp keywords) (symbolp (car keywords)))) |
343204bd SM |
1756 | keywords) |
1757 | ((numberp level) | |
e0be77f6 | 1758 | (or (nth level keywords) (car (last keywords)))) |
343204bd | 1759 | ((eq level t) |
e0be77f6 | 1760 | (car (last keywords))) |
343204bd SM |
1761 | (t |
1762 | (car keywords)))) | |
d46c21ec | 1763 | |
f8115798 SM |
1764 | (defvar font-lock-set-defaults nil) ; Whether we have set up defaults. |
1765 | ||
bed88438 | 1766 | (defvar font-lock-mode-major-mode) |
f8115798 SM |
1767 | (defun font-lock-set-defaults () |
1768 | "Set fontification defaults appropriately for this mode. | |
1769 | Sets various variables using `font-lock-defaults' (or, if nil, using | |
1770 | `font-lock-defaults-alist') and `font-lock-maximum-decoration'." | |
4837b516 | 1771 | ;; Set fontification defaults if not previously set for correct major mode. |
bed88438 LT |
1772 | (unless (and font-lock-set-defaults |
1773 | (eq font-lock-mode-major-mode major-mode)) | |
12245009 | 1774 | (setq font-lock-mode-major-mode major-mode) |
f8115798 SM |
1775 | (set (make-local-variable 'font-lock-set-defaults) t) |
1776 | (make-local-variable 'font-lock-fontified) | |
1777 | (make-local-variable 'font-lock-multiline) | |
1778 | (let* ((defaults (or font-lock-defaults | |
7ea820e9 RS |
1779 | (cdr (assq major-mode |
1780 | (with-no-warnings | |
d55c4199 | 1781 | font-lock-defaults-alist))))) |
f8115798 SM |
1782 | (keywords |
1783 | (font-lock-choose-keywords (nth 0 defaults) | |
1784 | (font-lock-value-in-major-mode font-lock-maximum-decoration))) | |
1785 | (local (cdr (assq major-mode font-lock-keywords-alist))) | |
1786 | (removed-keywords | |
1787 | (cdr-safe (assq major-mode font-lock-removed-keywords-alist)))) | |
1788 | (set (make-local-variable 'font-lock-defaults) defaults) | |
1789 | ;; Syntactic fontification? | |
558ca3c1 SM |
1790 | (if (nth 1 defaults) |
1791 | (set (make-local-variable 'font-lock-keywords-only) t) | |
1792 | (kill-local-variable 'font-lock-keywords-only)) | |
f8115798 | 1793 | ;; Case fold during regexp fontification? |
558ca3c1 SM |
1794 | (if (nth 2 defaults) |
1795 | (set (make-local-variable 'font-lock-keywords-case-fold-search) t) | |
1796 | (kill-local-variable 'font-lock-keywords-case-fold-search)) | |
f8115798 | 1797 | ;; Syntax table for regexp and syntactic fontification? |
558ca3c1 SM |
1798 | (if (null (nth 3 defaults)) |
1799 | (kill-local-variable 'font-lock-syntax-table) | |
f8115798 SM |
1800 | (set (make-local-variable 'font-lock-syntax-table) |
1801 | (copy-syntax-table (syntax-table))) | |
1802 | (dolist (selem (nth 3 defaults)) | |
1803 | ;; The character to modify may be a single CHAR or a STRING. | |
1804 | (let ((syntax (cdr selem))) | |
1805 | (dolist (char (if (numberp (car selem)) | |
1806 | (list (car selem)) | |
1807 | (mapcar 'identity (car selem)))) | |
1808 | (modify-syntax-entry char syntax font-lock-syntax-table))))) | |
1809 | ;; Syntax function for syntactic fontification? | |
558ca3c1 | 1810 | (if (nth 4 defaults) |
f8115798 | 1811 | (set (make-local-variable 'font-lock-beginning-of-syntax-function) |
558ca3c1 SM |
1812 | (nth 4 defaults)) |
1813 | (kill-local-variable 'font-lock-beginning-of-syntax-function)) | |
f8115798 SM |
1814 | ;; Variable alist? |
1815 | (dolist (x (nthcdr 5 defaults)) | |
1816 | (set (make-local-variable (car x)) (cdr x))) | |
69968400 | 1817 | ;; Set up `font-lock-keywords' last because its value might depend |
f8115798 SM |
1818 | ;; on other settings (e.g. font-lock-compile-keywords uses |
1819 | ;; font-lock-beginning-of-syntax-function). | |
1820 | (set (make-local-variable 'font-lock-keywords) | |
69968400 | 1821 | (font-lock-eval-keywords keywords)) |
f8115798 SM |
1822 | ;; Local fontification? |
1823 | (while local | |
1824 | (font-lock-add-keywords nil (car (car local)) (cdr (car local))) | |
1825 | (setq local (cdr local))) | |
1826 | (when removed-keywords | |
69968400 RS |
1827 | (font-lock-remove-keywords nil removed-keywords)) |
1828 | ;; Now compile the keywords. | |
1829 | (unless (eq (car font-lock-keywords) t) | |
e0be77f6 | 1830 | (setq font-lock-keywords |
533047c2 | 1831 | (font-lock-compile-keywords font-lock-keywords)))))) |
030f4a35 | 1832 | \f |
6772c8e1 | 1833 | ;;; Color etc. support. |
9bfbb130 | 1834 | |
d60b49ac DN |
1835 | ;; Note that `defface' will not overwrite any faces declared above via |
1836 | ;; `custom-declare-face'. | |
9177dd93 RS |
1837 | (defface font-lock-comment-face |
1838 | '((((class grayscale) (background light)) | |
1839 | (:foreground "DimGray" :weight bold :slant italic)) | |
1840 | (((class grayscale) (background dark)) | |
1841 | (:foreground "LightGray" :weight bold :slant italic)) | |
1842 | (((class color) (min-colors 88) (background light)) | |
1843 | (:foreground "Firebrick")) | |
1844 | (((class color) (min-colors 88) (background dark)) | |
1845 | (:foreground "chocolate1")) | |
1846 | (((class color) (min-colors 16) (background light)) | |
1847 | (:foreground "red")) | |
1848 | (((class color) (min-colors 16) (background dark)) | |
1849 | (:foreground "red1")) | |
1850 | (((class color) (min-colors 8) (background light)) | |
6eb61c70 | 1851 | (:foreground "red")) |
9177dd93 RS |
1852 | (((class color) (min-colors 8) (background dark)) |
1853 | ) | |
1854 | (t (:weight bold :slant italic))) | |
55015061 | 1855 | "Font Lock mode face used to highlight comments." |
a4deefed | 1856 | :group 'font-lock-faces) |
55015061 | 1857 | |
bf2cea1d | 1858 | (defface font-lock-comment-delimiter-face |
3187cffc | 1859 | '((default :inherit font-lock-comment-face) |
3989c3e7 SM |
1860 | (((class grayscale))) |
1861 | (((class color) (min-colors 16))) | |
3187cffc SM |
1862 | (((class color) (min-colors 8) (background light)) |
1863 | :foreground "red") | |
1864 | (((class color) (min-colors 8) (background dark)) | |
1865 | :foreground "red1")) | |
bf2cea1d | 1866 | "Font Lock mode face used to highlight comment delimiters." |
a4deefed | 1867 | :group 'font-lock-faces) |
9177dd93 | 1868 | |
55015061 | 1869 | (defface font-lock-string-face |
6b61353c | 1870 | '((((class grayscale) (background light)) (:foreground "DimGray" :slant italic)) |
0cccb49d | 1871 | (((class grayscale) (background dark)) (:foreground "LightGray" :slant italic)) |
6b61353c KH |
1872 | (((class color) (min-colors 88) (background light)) (:foreground "RosyBrown")) |
1873 | (((class color) (min-colors 88) (background dark)) (:foreground "LightSalmon")) | |
1874 | (((class color) (min-colors 16) (background light)) (:foreground "RosyBrown")) | |
1875 | (((class color) (min-colors 16) (background dark)) (:foreground "LightSalmon")) | |
1876 | (((class color) (min-colors 8)) (:foreground "green")) | |
0cccb49d | 1877 | (t (:slant italic))) |
55015061 | 1878 | "Font Lock mode face used to highlight strings." |
a4deefed | 1879 | :group 'font-lock-faces) |
55015061 | 1880 | |
1c172af4 SM |
1881 | (defface font-lock-doc-face |
1882 | '((t :inherit font-lock-string-face)) | |
1883 | "Font Lock mode face used to highlight documentation." | |
a4deefed | 1884 | :group 'font-lock-faces) |
1c172af4 | 1885 | |
55015061 | 1886 | (defface font-lock-keyword-face |
6b61353c | 1887 | '((((class grayscale) (background light)) (:foreground "LightGray" :weight bold)) |
0cccb49d | 1888 | (((class grayscale) (background dark)) (:foreground "DimGray" :weight bold)) |
6b61353c | 1889 | (((class color) (min-colors 88) (background light)) (:foreground "Purple")) |
ea81d57e | 1890 | (((class color) (min-colors 88) (background dark)) (:foreground "Cyan1")) |
6b61353c KH |
1891 | (((class color) (min-colors 16) (background light)) (:foreground "Purple")) |
1892 | (((class color) (min-colors 16) (background dark)) (:foreground "Cyan")) | |
1893 | (((class color) (min-colors 8)) (:foreground "cyan" :weight bold)) | |
0cccb49d | 1894 | (t (:weight bold))) |
55015061 | 1895 | "Font Lock mode face used to highlight keywords." |
a4deefed | 1896 | :group 'font-lock-faces) |
55015061 SM |
1897 | |
1898 | (defface font-lock-builtin-face | |
6b61353c | 1899 | '((((class grayscale) (background light)) (:foreground "LightGray" :weight bold)) |
0cccb49d | 1900 | (((class grayscale) (background dark)) (:foreground "DimGray" :weight bold)) |
6b61353c KH |
1901 | (((class color) (min-colors 88) (background light)) (:foreground "Orchid")) |
1902 | (((class color) (min-colors 88) (background dark)) (:foreground "LightSteelBlue")) | |
1903 | (((class color) (min-colors 16) (background light)) (:foreground "Orchid")) | |
1904 | (((class color) (min-colors 16) (background dark)) (:foreground "LightSteelBlue")) | |
1905 | (((class color) (min-colors 8)) (:foreground "blue" :weight bold)) | |
0cccb49d | 1906 | (t (:weight bold))) |
55015061 | 1907 | "Font Lock mode face used to highlight builtins." |
a4deefed | 1908 | :group 'font-lock-faces) |
55015061 SM |
1909 | |
1910 | (defface font-lock-function-name-face | |
ea81d57e | 1911 | '((((class color) (min-colors 88) (background light)) (:foreground "Blue1")) |
6b61353c KH |
1912 | (((class color) (min-colors 88) (background dark)) (:foreground "LightSkyBlue")) |
1913 | (((class color) (min-colors 16) (background light)) (:foreground "Blue")) | |
1914 | (((class color) (min-colors 16) (background dark)) (:foreground "LightSkyBlue")) | |
1915 | (((class color) (min-colors 8)) (:foreground "blue" :weight bold)) | |
0cccb49d | 1916 | (t (:inverse-video t :weight bold))) |
55015061 | 1917 | "Font Lock mode face used to highlight function names." |
a4deefed | 1918 | :group 'font-lock-faces) |
55015061 SM |
1919 | |
1920 | (defface font-lock-variable-name-face | |
6b61353c | 1921 | '((((class grayscale) (background light)) |
0cccb49d | 1922 | (:foreground "Gray90" :weight bold :slant italic)) |
55015061 | 1923 | (((class grayscale) (background dark)) |
0cccb49d | 1924 | (:foreground "DimGray" :weight bold :slant italic)) |
6b61353c KH |
1925 | (((class color) (min-colors 88) (background light)) (:foreground "DarkGoldenrod")) |
1926 | (((class color) (min-colors 88) (background dark)) (:foreground "LightGoldenrod")) | |
1927 | (((class color) (min-colors 16) (background light)) (:foreground "DarkGoldenrod")) | |
1928 | (((class color) (min-colors 16) (background dark)) (:foreground "LightGoldenrod")) | |
1929 | (((class color) (min-colors 8)) (:foreground "yellow" :weight light)) | |
0cccb49d | 1930 | (t (:weight bold :slant italic))) |
55015061 | 1931 | "Font Lock mode face used to highlight variable names." |
a4deefed | 1932 | :group 'font-lock-faces) |
55015061 SM |
1933 | |
1934 | (defface font-lock-type-face | |
6b61353c | 1935 | '((((class grayscale) (background light)) (:foreground "Gray90" :weight bold)) |
0cccb49d | 1936 | (((class grayscale) (background dark)) (:foreground "DimGray" :weight bold)) |
6b61353c KH |
1937 | (((class color) (min-colors 88) (background light)) (:foreground "ForestGreen")) |
1938 | (((class color) (min-colors 88) (background dark)) (:foreground "PaleGreen")) | |
1939 | (((class color) (min-colors 16) (background light)) (:foreground "ForestGreen")) | |
1940 | (((class color) (min-colors 16) (background dark)) (:foreground "PaleGreen")) | |
1941 | (((class color) (min-colors 8)) (:foreground "green")) | |
0cccb49d | 1942 | (t (:weight bold :underline t))) |
8acf2292 | 1943 | "Font Lock mode face used to highlight type and classes." |
a4deefed | 1944 | :group 'font-lock-faces) |
55015061 | 1945 | |
8acf2292 | 1946 | (defface font-lock-constant-face |
6b61353c | 1947 | '((((class grayscale) (background light)) |
0cccb49d | 1948 | (:foreground "LightGray" :weight bold :underline t)) |
55015061 | 1949 | (((class grayscale) (background dark)) |
0cccb49d | 1950 | (:foreground "Gray50" :weight bold :underline t)) |
6b61353c KH |
1951 | (((class color) (min-colors 88) (background light)) (:foreground "CadetBlue")) |
1952 | (((class color) (min-colors 88) (background dark)) (:foreground "Aquamarine")) | |
1953 | (((class color) (min-colors 16) (background light)) (:foreground "CadetBlue")) | |
1954 | (((class color) (min-colors 16) (background dark)) (:foreground "Aquamarine")) | |
1955 | (((class color) (min-colors 8)) (:foreground "magenta")) | |
0cccb49d | 1956 | (t (:weight bold :underline t))) |
8acf2292 | 1957 | "Font Lock mode face used to highlight constants and labels." |
a4deefed | 1958 | :group 'font-lock-faces) |
55015061 SM |
1959 | |
1960 | (defface font-lock-warning-face | |
ea81d57e | 1961 | '((((class color) (min-colors 88) (background light)) (:foreground "Red1" :weight bold)) |
6b61353c | 1962 | (((class color) (min-colors 88) (background dark)) (:foreground "Pink" :weight bold)) |
11ec76b7 | 1963 | (((class color) (min-colors 16) (background light)) (:foreground "Red1" :weight bold)) |
c9341aa0 JB |
1964 | (((class color) (min-colors 16) (background dark)) (:foreground "Pink" :weight bold)) |
1965 | (((class color) (min-colors 8)) (:foreground "red")) | |
0cccb49d | 1966 | (t (:inverse-video t :weight bold))) |
55015061 | 1967 | "Font Lock mode face used to highlight warnings." |
a4deefed | 1968 | :group 'font-lock-faces) |
2d63aa67 | 1969 | |
5d27cf9f | 1970 | (defface font-lock-negation-char-face |
39eae073 | 1971 | '((t nil)) |
5d27cf9f | 1972 | "Font Lock mode face used to highlight easy to overlook negation." |
a4deefed | 1973 | :group 'font-lock-faces) |
5d27cf9f | 1974 | |
d654cab8 | 1975 | (defface font-lock-preprocessor-face |
c9341aa0 | 1976 | '((t :inherit font-lock-builtin-face)) |
d654cab8 | 1977 | "Font Lock mode face used to highlight preprocessor directives." |
a4deefed | 1978 | :group 'font-lock-faces) |
d654cab8 | 1979 | |
9ad5e4d4 | 1980 | (defface font-lock-regexp-grouping-backslash |
d8d5c28c | 1981 | '((t :inherit bold)) |
9ad5e4d4 | 1982 | "Font Lock mode face for backslashes in Lisp regexp grouping constructs." |
a4deefed | 1983 | :group 'font-lock-faces) |
c711faac | 1984 | |
112abe24 | 1985 | (defface font-lock-regexp-grouping-construct |
c711faac | 1986 | '((t :inherit bold)) |
9ad5e4d4 | 1987 | "Font Lock mode face used to highlight grouping constructs in Lisp regexps." |
a4deefed | 1988 | :group 'font-lock-faces) |
c711faac | 1989 | |
6772c8e1 | 1990 | ;;; End of Color etc. support. |
9bfbb130 | 1991 | \f |
56fcbd7e SM |
1992 | ;;; Menu support. |
1993 | ||
1994 | ;; This section of code is commented out because Emacs does not have real menu | |
1995 | ;; buttons. (We can mimic them by putting "( ) " or "(X) " at the beginning of | |
1996 | ;; the menu entry text, but with Xt it looks both ugly and embarrassingly | |
1997 | ;; amateur.) If/When Emacs gets real menus buttons, put in menu-bar.el after | |
1998 | ;; the entry for "Text Properties" something like: | |
1999 | ;; | |
2000 | ;; (define-key menu-bar-edit-menu [font-lock] | |
9c8de95c | 2001 | ;; (cons "Syntax Highlighting" font-lock-menu)) |
56fcbd7e SM |
2002 | ;; |
2003 | ;; and remove a single ";" from the beginning of each line in the rest of this | |
2004 | ;; section. Probably the mechanism for telling the menu code what are menu | |
2005 | ;; buttons and when they are on or off needs tweaking. I have assumed that the | |
2006 | ;; mechanism is via `menu-toggle' and `menu-selected' symbol properties. sm. | |
2007 | ||
d55c4199 SM |
2008 | ;;;;;###autoload |
2009 | ;;(progn | |
2010 | ;; ;; Make the Font Lock menu. | |
2011 | ;; (defvar font-lock-menu (make-sparse-keymap "Syntax Highlighting")) | |
2012 | ;; ;; Add the menu items in reverse order. | |
2013 | ;; (define-key font-lock-menu [fontify-less] | |
2014 | ;; '("Less In Current Buffer" . font-lock-fontify-less)) | |
2015 | ;; (define-key font-lock-menu [fontify-more] | |
2016 | ;; '("More In Current Buffer" . font-lock-fontify-more)) | |
2017 | ;; (define-key font-lock-menu [font-lock-sep] | |
2018 | ;; '("--")) | |
2019 | ;; (define-key font-lock-menu [font-lock-mode] | |
2020 | ;; '("In Current Buffer" . font-lock-mode)) | |
2021 | ;; (define-key font-lock-menu [global-font-lock-mode] | |
2022 | ;; '("In All Buffers" . global-font-lock-mode))) | |
2023 | ;; | |
2024 | ;;;;;###autoload | |
2025 | ;;(progn | |
2026 | ;; ;; We put the appropriate `menu-enable' etc. symbol property values on when | |
2027 | ;; ;; font-lock.el is loaded, so we don't need to autoload the three variables. | |
2028 | ;; (put 'global-font-lock-mode 'menu-toggle t) | |
2029 | ;; (put 'font-lock-mode 'menu-toggle t) | |
2030 | ;; (put 'font-lock-fontify-more 'menu-enable '(identity)) | |
2031 | ;; (put 'font-lock-fontify-less 'menu-enable '(identity))) | |
2032 | ;; | |
2033 | ;; ;; Put the appropriate symbol property values on now. See above. | |
2034 | ;;(put 'global-font-lock-mode 'menu-selected 'global-font-lock-mode) | |
2035 | ;;(put 'font-lock-mode 'menu-selected 'font-lock-mode) | |
2036 | ;;(put 'font-lock-fontify-more 'menu-enable '(nth 2 font-lock-fontify-level)) | |
2037 | ;;(put 'font-lock-fontify-less 'menu-enable '(nth 1 font-lock-fontify-level)) | |
2038 | ;; | |
2039 | ;;(defvar font-lock-fontify-level nil) ; For less/more fontification. | |
2040 | ;; | |
2041 | ;;(defun font-lock-fontify-level (level) | |
2042 | ;; (let ((font-lock-maximum-decoration level)) | |
2043 | ;; (when font-lock-mode | |
2044 | ;; (font-lock-mode)) | |
2045 | ;; (font-lock-mode) | |
2046 | ;; (when font-lock-verbose | |
2047 | ;; (message "Fontifying %s... level %d" (buffer-name) level)))) | |
2048 | ;; | |
2049 | ;;(defun font-lock-fontify-less () | |
2050 | ;; "Fontify the current buffer with less decoration. | |
2051 | ;;See `font-lock-maximum-decoration'." | |
2052 | ;; (interactive) | |
2053 | ;; ;; Check in case we get called interactively. | |
2054 | ;; (if (nth 1 font-lock-fontify-level) | |
2055 | ;; (font-lock-fontify-level (1- (car font-lock-fontify-level))) | |
2056 | ;; (error "No less decoration"))) | |
2057 | ;; | |
2058 | ;;(defun font-lock-fontify-more () | |
2059 | ;; "Fontify the current buffer with more decoration. | |
2060 | ;;See `font-lock-maximum-decoration'." | |
2061 | ;; (interactive) | |
2062 | ;; ;; Check in case we get called interactively. | |
2063 | ;; (if (nth 2 font-lock-fontify-level) | |
2064 | ;; (font-lock-fontify-level (1+ (car font-lock-fontify-level))) | |
2065 | ;; (error "No more decoration"))) | |
2066 | ;; | |
2067 | ;; ;; This should be called by `font-lock-set-defaults'. | |
2068 | ;;(defun font-lock-set-menu () | |
2069 | ;; ;; Activate less/more fontification entries if there are multiple levels for | |
2070 | ;; ;; the current buffer. Sets `font-lock-fontify-level' to be of the form | |
2071 | ;; ;; (CURRENT-LEVEL IS-LOWER-LEVEL-P IS-HIGHER-LEVEL-P) for menu activation. | |
2072 | ;; (let ((keywords (or (nth 0 font-lock-defaults) | |
2073 | ;; (nth 1 (assq major-mode font-lock-defaults-alist)))) | |
2074 | ;; (level (font-lock-value-in-major-mode font-lock-maximum-decoration))) | |
2075 | ;; (make-local-variable 'font-lock-fontify-level) | |
2076 | ;; (if (or (symbolp keywords) (= (length keywords) 1)) | |
2077 | ;; (font-lock-unset-menu) | |
2078 | ;; (cond ((eq level t) | |
2079 | ;; (setq level (1- (length keywords)))) | |
2080 | ;; ((or (null level) (zerop level)) | |
2081 | ;; ;; The default level is usually, but not necessarily, level 1. | |
2082 | ;; (setq level (- (length keywords) | |
2083 | ;; (length (member (eval (car keywords)) | |
2084 | ;; (mapcar 'eval (cdr keywords)))))))) | |
2085 | ;; (setq font-lock-fontify-level (list level (> level 1) | |
2086 | ;; (< level (1- (length keywords)))))))) | |
2087 | ;; | |
2088 | ;; ;; This should be called by `font-lock-unset-defaults'. | |
2089 | ;;(defun font-lock-unset-menu () | |
2090 | ;; ;; Deactivate less/more fontification entries. | |
2091 | ;; (setq font-lock-fontify-level nil)) | |
2d63aa67 SM |
2092 | |
2093 | ;;; End of Menu support. | |
56fcbd7e | 2094 | \f |
9bfbb130 | 2095 | ;;; Various regexp information shared by several modes. |
d55c4199 | 2096 | ;; ;; Information specific to a single mode should go in its load library. |
030f4a35 | 2097 | |
1fed50c4 SM |
2098 | ;; Font Lock support for C, C++, Objective-C and Java modes is now in |
2099 | ;; cc-fonts.el (and required by cc-mode.el). However, the below function | |
56fcbd7e | 2100 | ;; should stay in font-lock.el, since it is used by other libraries. sm. |
2e6a15fc | 2101 | |
c1f2ffc8 | 2102 | (defun font-lock-match-c-style-declaration-item-and-skip-to-next (limit) |
2e6a15fc | 2103 | "Match, and move over, any declaration/definition item after point. |
c1f2ffc8 SM |
2104 | Matches after point, but ignores leading whitespace and `*' characters. |
2105 | Does not move further than LIMIT. | |
2106 | ||
ac6e572c SM |
2107 | The expected syntax of a declaration/definition item is `word' (preceded by |
2108 | optional whitespace and `*' characters and proceeded by optional whitespace) | |
2109 | optionally followed by a `('. Everything following the item (but belonging to | |
4cac2fc3 | 2110 | it) is expected to be skip-able by `scan-sexps', and items are expected to be |
ac6e572c | 2111 | separated with a `,' and to be terminated with a `;'. |
c1f2ffc8 SM |
2112 | |
2113 | Thus the regexp matches after point: word ( | |
2114 | ^^^^ ^ | |
2115 | Where the match subexpressions are: 1 2 | |
2116 | ||
2117 | The item is delimited by (match-beginning 1) and (match-end 1). | |
2118 | If (match-beginning 2) is non-nil, the item is followed by a `('. | |
2119 | ||
2120 | This function could be MATCHER in a MATCH-ANCHORED `font-lock-keywords' item." | |
c1966bb4 | 2121 | (when (looking-at "[ \n\t*]*\\(\\sw+\\)[ \t\n]*\\(((?\\)?") |
8259bf10 SM |
2122 | (when (and (match-end 2) (> (- (match-end 2) (match-beginning 2)) 1)) |
2123 | ;; If `word' is followed by a double open-paren, it's probably | |
2124 | ;; a macro used for "int myfun P_ ((int arg1))". Let's go back one | |
2125 | ;; word to try and match `myfun' rather than `P_'. | |
2126 | (let ((pos (point))) | |
c1966bb4 | 2127 | (skip-chars-backward " \t\n") |
8259bf10 | 2128 | (skip-syntax-backward "w") |
4cac2fc3 | 2129 | (unless (looking-at "\\(\\sw+\\)[ \t\n]*\\sw+[ \t\n]*\\(((?\\)?") |
8259bf10 SM |
2130 | ;; Looks like it was something else, so go back to where we |
2131 | ;; were and reset the match data by rematching. | |
2132 | (goto-char pos) | |
c1966bb4 | 2133 | (looking-at "[ \n\t*]*\\(\\sw+\\)[ \t\n]*\\(((?\\)?")))) |
2e6a15fc SM |
2134 | (save-match-data |
2135 | (condition-case nil | |
2136 | (save-restriction | |
c1966bb4 | 2137 | ;; Restrict to the LIMIT. |
2e6a15fc SM |
2138 | (narrow-to-region (point-min) limit) |
2139 | (goto-char (match-end 1)) | |
2140 | ;; Move over any item value, etc., to the next item. | |
c1966bb4 | 2141 | (while (not (looking-at "[ \t\n]*\\(\\(,\\)\\|;\\|\\'\\)")) |
2e6a15fc | 2142 | (goto-char (or (scan-sexps (point) 1) (point-max)))) |
c1ebafd6 KH |
2143 | (if (match-end 2) |
2144 | (goto-char (match-end 2)))) | |
2e6a15fc | 2145 | (error t))))) |
4076cbf6 MY |
2146 | |
2147 | ;; C preprocessor(cpp) is used outside of C, C++ and Objective-C source file. | |
2148 | ;; e.g. assembler code and GNU linker script in Linux kernel. | |
2149 | ;; `cpp-font-lock-keywords' is handy for modes for the files. | |
2150 | ;; | |
2151 | ;; Here we cannot use `regexp-opt' because because regex-opt is not preloaded | |
071e6277 | 2152 | ;; while font-lock.el is preloaded to emacs. So values pre-calculated with |
4076cbf6 MY |
2153 | ;; regexp-opt are used here. |
2154 | ||
2155 | ;; `cpp-font-lock-keywords-source-directives' is calculated from: | |
2156 | ;; | |
2157 | ;; (regexp-opt | |
2158 | ;; '("define" "elif" "else" "endif" "error" "file" "if" "ifdef" | |
8c8b1164 | 2159 | ;; "ifndef" "import" "include" "line" "pragma" "undef" "warning")) |
4076cbf6 MY |
2160 | ;; |
2161 | (defconst cpp-font-lock-keywords-source-directives | |
8c8b1164 | 2162 | "define\\|e\\(?:l\\(?:if\\|se\\)\\|ndif\\|rror\\)\\|file\\|i\\(?:f\\(?:n?def\\)?\\|mport\\|nclude\\)\\|line\\|pragma\\|undef\\|warning" |
2124318a | 2163 | "Regular expression used in `cpp-font-lock-keywords'.") |
4076cbf6 MY |
2164 | |
2165 | ;; `cpp-font-lock-keywords-source-depth' is calculated from: | |
2166 | ;; | |
2167 | ;; (regexp-opt-depth (regexp-opt | |
2168 | ;; '("define" "elif" "else" "endif" "error" "file" "if" "ifdef" | |
8c8b1164 | 2169 | ;; "ifndef" "import" "include" "line" "pragma" "undef" "warning"))) |
4076cbf6 MY |
2170 | ;; |
2171 | (defconst cpp-font-lock-keywords-source-depth 0 | |
2172 | "An integer representing regular expression depth of `cpp-font-lock-keywords-source-directives'. | |
2173 | Used in `cpp-font-lock-keywords'.") | |
2174 | ||
2175 | (defconst cpp-font-lock-keywords | |
2176 | (let* ((directives cpp-font-lock-keywords-source-directives) | |
2177 | (directives-depth cpp-font-lock-keywords-source-depth)) | |
2178 | (list | |
2179 | ;; | |
2180 | ;; Fontify error directives. | |
8c8b1164 | 2181 | '("^#[ \t]*\\(?:error\\|warning\\)[ \t]+\\(.+\\)" 1 font-lock-warning-face prepend) |
4076cbf6 MY |
2182 | ;; |
2183 | ;; Fontify filenames in #include <...> preprocessor directives as strings. | |
2184 | '("^#[ \t]*\\(?:import\\|include\\)[ \t]*\\(<[^>\"\n]*>?\\)" | |
2185 | 1 font-lock-string-face prepend) | |
2186 | ;; | |
2187 | ;; Fontify function macro names. | |
071e6277 | 2188 | '("^#[ \t]*define[ \t]+\\([[:alpha:]_][[:alnum:]_$]*\\)(" |
4076cbf6 MY |
2189 | (1 font-lock-function-name-face prepend) |
2190 | ;; | |
2191 | ;; Macro arguments. | |
2192 | ((lambda (limit) | |
2193 | (re-search-forward | |
071e6277 GM |
2194 | "\\(?:\\([[:alpha:]_][[:alnum:]_]*\\)[,]?\\)" |
2195 | (or (save-excursion (re-search-forward ")" limit t)) | |
4076cbf6 | 2196 | limit) |
071e6277 | 2197 | t)) |
4076cbf6 MY |
2198 | nil nil (1 font-lock-variable-name-face prepend))) |
2199 | ;; | |
2200 | ;; Fontify symbol names in #elif or #if ... defined preprocessor directives. | |
2201 | '("^#[ \t]*\\(?:elif\\|if\\)\\>" | |
2202 | ("\\<\\(defined\\)\\>[ \t]*(?\\([[:alpha:]_][[:alnum:]_]*\\)?" nil nil | |
2203 | (1 font-lock-builtin-face prepend) (2 font-lock-variable-name-face prepend t))) | |
2204 | ;; | |
2205 | ;; Fontify otherwise as symbol names, and the preprocessor directive names. | |
2206 | (list | |
2207 | (concat "^\\(#[ \t]*\\(?:" directives | |
2208 | "\\)\\)\\>[ \t!]*\\([[:alpha:]_][[:alnum:]_]*\\)?") | |
2209 | '(1 font-lock-preprocessor-face prepend) | |
2210 | (list (+ 2 directives-depth) | |
2211 | 'font-lock-variable-name-face nil t)))) | |
2124318a JPW |
2212 | "Font lock keywords for C preprocessor directives. |
2213 | `c-mode', `c++-mode' and `objc-mode' have their own font lock keywords | |
2214 | for C preprocessor directives. This definition is for the other modes | |
2215 | in which C preprocessor directives are used. e.g. `asm-mode' and | |
4076cbf6 MY |
2216 | `ld-script-mode'.") |
2217 | ||
46f26fcf SM |
2218 | \f |
2219 | ;; Lisp. | |
2e6a15fc | 2220 | |
030f4a35 | 2221 | (defconst lisp-font-lock-keywords-1 |
2e6a15fc | 2222 | (eval-when-compile |
71994ae7 DP |
2223 | `(;; Definitions. |
2224 | (,(concat "(\\(def\\(" | |
2225 | ;; Function declarations. | |
588fe8bc | 2226 | "\\(advice\\|alias\\|generic\\|macro\\*?\\|method\\|" |
71994ae7 | 2227 | "setf\\|subst\\*?\\|un\\*?\\|" |
140adc83 | 2228 | "ine-\\(condition\\|" |
5da23a93 | 2229 | "\\(?:derived\\|\\(?:global\\(?:ized\\)?-\\)?minor\\|generic\\)-mode\\|" |
71994ae7 DP |
2230 | "method-combination\\|setf-expander\\|skeleton\\|widget\\|" |
2231 | "function\\|\\(compiler\\|modify\\|symbol\\)-macro\\)\\)\\|" | |
2232 | ;; Variable declarations. | |
588fe8bc | 2233 | "\\(const\\(ant\\)?\\|custom\\|varalias\\|face\\|parameter\\|var\\)\\|" |
71994ae7 DP |
2234 | ;; Structure declarations. |
2235 | "\\(class\\|group\\|theme\\|package\\|struct\\|type\\)" | |
2236 | "\\)\\)\\>" | |
2237 | ;; Any whitespace and defined object. | |
2238 | "[ \t'\(]*" | |
2239 | "\\(setf[ \t]+\\sw+)\\|\\sw+\\)?") | |
2240 | (1 font-lock-keyword-face) | |
2241 | (9 (cond ((match-beginning 3) font-lock-function-name-face) | |
2242 | ((match-beginning 6) font-lock-variable-name-face) | |
2243 | (t font-lock-type-face)) | |
2244 | nil t)) | |
071e6277 GM |
2245 | ;; Emacs Lisp autoload cookies. Supports the slightly different |
2246 | ;; forms used by mh-e, calendar, etc. | |
2247 | ("^;;;###\\([-a-z]*autoload\\)" 1 font-lock-warning-face prepend) | |
71994ae7 DP |
2248 | ;; Regexp negated char group. |
2249 | ("\\[\\(\\^\\)" 1 font-lock-negation-char-face prepend))) | |
56fcbd7e | 2250 | "Subdued level highlighting for Lisp modes.") |
030f4a35 RS |
2251 | |
2252 | (defconst lisp-font-lock-keywords-2 | |
799761f0 | 2253 | (append lisp-font-lock-keywords-1 |
2e6a15fc | 2254 | (eval-when-compile |
71994ae7 DP |
2255 | `(;; Control structures. Emacs Lisp forms. |
2256 | (,(concat | |
2257 | "(" (regexp-opt | |
ef651d13 | 2258 | '("cond" "if" "while" "while-no-input" "let" "let*" |
71994ae7 DP |
2259 | "prog" "progn" "progv" "prog1" "prog2" "prog*" |
2260 | "inline" "lambda" "save-restriction" "save-excursion" | |
3e50a5e8 MR |
2261 | "save-selected-window" "save-window-excursion" |
2262 | "save-match-data" "save-current-buffer" | |
cbd0f686 | 2263 | "unwind-protect" "condition-case" "track-mouse" |
71994ae7 | 2264 | "eval-after-load" "eval-and-compile" "eval-when-compile" |
9f40e1d5 | 2265 | "eval-when" "eval-at-startup" "eval-next-after-load" |
d4f26f40 | 2266 | "with-case-table" "with-category-table" |
71994ae7 DP |
2267 | "with-current-buffer" "with-electric-help" |
2268 | "with-local-quit" "with-no-warnings" | |
2269 | "with-output-to-string" "with-output-to-temp-buffer" | |
b4bb3cbc | 2270 | "with-selected-window" "with-selected-frame" "with-syntax-table" |
71994ae7 DP |
2271 | "with-temp-buffer" "with-temp-file" "with-temp-message" |
2272 | "with-timeout" "with-timeout-handler") t) | |
2273 | "\\>") | |
2274 | . 1) | |
2275 | ;; Control structures. Common Lisp forms. | |
2276 | (,(concat | |
2277 | "(" (regexp-opt | |
2278 | '("when" "unless" "case" "ecase" "typecase" "etypecase" | |
2279 | "ccase" "ctypecase" "handler-case" "handler-bind" | |
2280 | "restart-bind" "restart-case" "in-package" | |
2281 | "break" "ignore-errors" | |
2282 | "loop" "do" "do*" "dotimes" "dolist" "the" "locally" | |
2283 | "proclaim" "declaim" "declare" "symbol-macrolet" | |
2284 | "lexical-let" "lexical-let*" "flet" "labels" "compiler-let" | |
2285 | "destructuring-bind" "macrolet" "tagbody" "block" "go" | |
2286 | "multiple-value-bind" "multiple-value-prog1" | |
2287 | "return" "return-from" | |
2288 | "with-accessors" "with-compilation-unit" | |
2289 | "with-condition-restarts" "with-hash-table-iterator" | |
2290 | "with-input-from-string" "with-open-file" | |
2291 | "with-open-stream" "with-output-to-string" | |
2292 | "with-package-iterator" "with-simple-restart" | |
2293 | "with-slots" "with-standard-io-syntax") t) | |
2294 | "\\>") | |
2295 | . 1) | |
2296 | ;; Exit/Feature symbols as constants. | |
2297 | (,(concat "(\\(catch\\|throw\\|featurep\\|provide\\|require\\)\\>" | |
2298 | "[ \t']*\\(\\sw+\\)?") | |
2299 | (1 font-lock-keyword-face) | |
2300 | (2 font-lock-constant-face nil t)) | |
2301 | ;; Erroneous structures. | |
2302 | ("(\\(abort\\|assert\\|warn\\|check-type\\|cerror\\|error\\|signal\\)\\>" 1 font-lock-warning-face) | |
2303 | ;; Words inside \\[] tend to be for `substitute-command-keys'. | |
b50f58d5 | 2304 | ("\\\\\\\\\\[\\(\\sw+\\)\\]" 1 font-lock-constant-face prepend) |
71994ae7 DP |
2305 | ;; Words inside `' tend to be symbol names. |
2306 | ("`\\(\\sw\\sw+\\)'" 1 font-lock-constant-face prepend) | |
2307 | ;; Constant values. | |
2308 | ("\\<:\\sw+\\>" 0 font-lock-builtin-face) | |
2309 | ;; ELisp and CLisp `&' keywords as types. | |
317921ec | 2310 | ("\\<\\&\\sw+\\>" . font-lock-type-face) |
9ad5e4d4 | 2311 | ;; ELisp regexp grouping constructs |
ae0c6927 | 2312 | ((lambda (bound) |
9ad5e4d4 EZ |
2313 | (catch 'found |
2314 | ;; The following loop is needed to continue searching after matches | |
2315 | ;; that do not occur in strings. The associated regexp matches one | |
2316 | ;; of `\\\\' `\\(' `\\(?:' `\\|' `\\)'. `\\\\' has been included to | |
2317 | ;; avoid highlighting, for example, `\\(' in `\\\\('. | |
0ffaebf0 | 2318 | (while (re-search-forward "\\(\\\\\\\\\\)\\(?:\\(\\\\\\\\\\)\\|\\((\\(?:\\?[0-9]*:\\)?\\|[|)]\\)\\)" bound t) |
9ad5e4d4 EZ |
2319 | (unless (match-beginning 2) |
2320 | (let ((face (get-text-property (1- (point)) 'face))) | |
2321 | (when (or (and (listp face) | |
2322 | (memq 'font-lock-string-face face)) | |
2323 | (eq 'font-lock-string-face face)) | |
2324 | (throw 'found t))))))) | |
2325 | (1 'font-lock-regexp-grouping-backslash prepend) | |
2326 | (3 'font-lock-regexp-grouping-construct prepend)) | |
90cbc9cd SM |
2327 | ;;; This is too general -- rms. |
2328 | ;;; A user complained that he has functions whose names start with `do' | |
2329 | ;;; and that they get the wrong color. | |
6b61353c | 2330 | ;;; ;; CL `with-' and `do-' constructs |
71994ae7 | 2331 | ;;; ("(\\(\\(do-\\|with-\\)\\(\\s_\\|\\w\\)*\\)" 1 font-lock-keyword-face) |
2e6a15fc | 2332 | ))) |
fb512de9 | 2333 | "Gaudy level highlighting for Lisp modes.") |
030f4a35 | 2334 | |
fb512de9 SM |
2335 | (defvar lisp-font-lock-keywords lisp-font-lock-keywords-1 |
2336 | "Default expressions to highlight in Lisp modes.") | |
46f26fcf | 2337 | \f |
030f4a35 | 2338 | (provide 'font-lock) |
54f73af3 | 2339 | |
7ae3cc71 | 2340 | ;; arch-tag: 682327e4-64d8-4057-b20b-1fbb9f1fc54c |
030f4a35 | 2341 | ;;; font-lock.el ends here |