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876f2438 SM |
1 | ;;; font-lock.el --- Electric font lock mode |
2 | ||
a2b8e66b | 3 | ;; Copyright (C) 1992, 1993, 1994, 1995, 1996 Free Software Foundation, Inc. |
030f4a35 | 4 | |
9bfbb130 | 5 | ;; Author: jwz, then rms, then sm <simon@gnu.ai.mit.edu> |
030f4a35 RS |
6 | ;; Maintainer: FSF |
7 | ;; Keywords: languages, faces | |
8 | ||
9 | ;; This file is part of GNU Emacs. | |
10 | ||
11 | ;; GNU Emacs is free software; you can redistribute it and/or modify | |
12 | ;; it under the terms of the GNU General Public License as published by | |
13 | ;; the Free Software Foundation; either version 2, or (at your option) | |
14 | ;; any later version. | |
15 | ||
16 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
17 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | ;; GNU General Public License for more details. | |
20 | ||
21 | ;; You should have received a copy of the GNU General Public License | |
b578f267 EN |
22 | ;; along with GNU Emacs; see the file COPYING. If not, write to the |
23 | ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
24 | ;; Boston, MA 02111-1307, USA. | |
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 | |
50 | ;; also the variable `font-lock-maximum-size'. | |
51 | ||
b89e1134 SM |
52 | ;; If you add patterns for a new mode, say foo.el's `foo-mode', say in which |
53 | ;; you don't want syntactic fontification to occur, you can make Font Lock mode | |
54 | ;; use your regexps when turning on Font Lock by adding to `foo-mode-hook': | |
55 | ;; | |
56 | ;; (add-hook 'foo-mode-hook | |
57 | ;; '(lambda () (make-local-variable 'font-lock-defaults) | |
58 | ;; (setq font-lock-defaults '(foo-font-lock-keywords t)))) | |
59 | ;; | |
a1eb1cf1 RS |
60 | ;; Nasty regexps of the form "bar\\(\\|lo\\)\\|f\\(oo\\|u\\(\\|bar\\)\\)\\|lo" |
61 | ;; are made thusly: (make-regexp '("foo" "fu" "fubar" "bar" "barlo" "lo")) for | |
62 | ;; efficiency. See /pub/gnu/emacs/elisp-archive/functions/make-regexp.el.Z on | |
63 | ;; archive.cis.ohio-state.edu for this and other functions. | |
9bfbb130 SM |
64 | |
65 | ;; What is fontification for? You might say, "It's to make my code look nice." | |
66 | ;; I think it should be for adding information in the form of cues. These cues | |
67 | ;; should provide you with enough information to both (a) distinguish between | |
68 | ;; different items, and (b) identify the item meanings, without having to read | |
69 | ;; the items and think about it. Therefore, fontification allows you to think | |
70 | ;; less about, say, the structure of code, and more about, say, why the code | |
71 | ;; doesn't work. Or maybe it allows you to think less and drift off to sleep. | |
72 | ;; | |
73 | ;; So, here are my opinions/advice/guidelines: | |
74 | ;; | |
7d7d915a SM |
75 | ;; - Highlight conceptual objects, such as function and variable names, and |
76 | ;; different objects types differently, i.e., (a) and (b) above, highlight | |
77 | ;; function names differently to variable names. | |
78 | ;; - Keep the faces distinct from each other as far as possible. | |
79 | ;; i.e., (a) above. | |
9bfbb130 SM |
80 | ;; - Use the same face for the same conceptual object, across all modes. |
81 | ;; i.e., (b) above, all modes that have items that can be thought of as, say, | |
82 | ;; keywords, should be highlighted with the same face, etc. | |
9bfbb130 SM |
83 | ;; - Make the face attributes fit the concept as far as possible. |
84 | ;; i.e., function names might be a bold colour such as blue, comments might | |
85 | ;; be a bright colour such as red, character strings might be brown, because, | |
86 | ;; err, strings are brown (that was not the reason, please believe me). | |
87 | ;; - Don't use a non-nil OVERRIDE unless you have a good reason. | |
88 | ;; Only use OVERRIDE for special things that are easy to define, such as the | |
89 | ;; way `...' quotes are treated in strings and comments in Emacs Lisp mode. | |
90 | ;; Don't use it to, say, highlight keywords in commented out code or strings. | |
91 | ;; - Err, that's it. | |
a1eb1cf1 | 92 | \f |
9bfbb130 SM |
93 | ;; User variables. |
94 | ||
95 | (defvar font-lock-verbose t | |
96 | "*If non-nil, means show status messages when fontifying.") | |
97 | ||
98 | ;;;###autoload | |
99 | (defvar font-lock-maximum-decoration nil | |
100 | "*If non-nil, the maximum decoration level for fontifying. | |
101 | If nil, use the default decoration (typically the minimum available). | |
102 | If t, use the maximum decoration available. | |
103 | If a number, use that level of decoration (or if not available the maximum). | |
104 | If a list, each element should be a cons pair of the form (MAJOR-MODE . LEVEL), | |
105 | where MAJOR-MODE is a symbol or t (meaning the default). For example: | |
106 | ((c++-mode . 2) (c-mode . t) (t . 1)) | |
107 | means use level 2 decoration for buffers in `c++-mode', the maximum decoration | |
108 | available for buffers in `c-mode', and level 1 decoration otherwise.") | |
030f4a35 | 109 | |
9bfbb130 SM |
110 | ;;;###autoload |
111 | (defvar font-lock-maximum-size (* 250 1024) | |
112 | "*If non-nil, the maximum size for buffers for fontifying. | |
113 | Only buffers less than this can be fontified when Font Lock mode is turned on. | |
114 | If nil, means size is irrelevant. | |
115 | If a list, each element should be a cons pair of the form (MAJOR-MODE . SIZE), | |
116 | where MAJOR-MODE is a symbol or t (meaning the default). For example: | |
117 | ((c++-mode . 256000) (c-mode . 256000) (rmail-mode . 1048576)) | |
118 | means that the maximum size is 250K for buffers in `c++-mode' or `c-mode', one | |
119 | megabyte for buffers in `rmail-mode', and size is irrelevant otherwise.") | |
120 | \f | |
121 | ;; Fontification variables: | |
122 | ||
123 | (defvar font-lock-comment-face 'font-lock-comment-face | |
a1eb1cf1 | 124 | "Face to use for comments.") |
030f4a35 | 125 | |
9bfbb130 | 126 | (defvar font-lock-string-face 'font-lock-string-face |
a1eb1cf1 | 127 | "Face to use for strings.") |
030f4a35 | 128 | |
9bfbb130 SM |
129 | (defvar font-lock-keyword-face 'font-lock-keyword-face |
130 | "Face to use for keywords.") | |
131 | ||
132 | (defvar font-lock-function-name-face 'font-lock-function-name-face | |
030f4a35 RS |
133 | "Face to use for function names.") |
134 | ||
9bfbb130 | 135 | (defvar font-lock-variable-name-face 'font-lock-variable-name-face |
a1eb1cf1 RS |
136 | "Face to use for variable names.") |
137 | ||
9bfbb130 SM |
138 | (defvar font-lock-type-face 'font-lock-type-face |
139 | "Face to use for type names.") | |
030f4a35 | 140 | |
9bfbb130 SM |
141 | (defvar font-lock-reference-face 'font-lock-reference-face |
142 | "Face to use for reference names.") | |
a1eb1cf1 | 143 | |
030f4a35 | 144 | (defvar font-lock-keywords nil |
d46c21ec SM |
145 | "*A list of the keywords to highlight. |
146 | Each element should be of the form: | |
a1eb1cf1 | 147 | |
826b2925 SM |
148 | MATCHER |
149 | (MATCHER . MATCH) | |
150 | (MATCHER . FACENAME) | |
151 | (MATCHER . HIGHLIGHT) | |
152 | (MATCHER HIGHLIGHT ...) | |
a078558d | 153 | (eval . FORM) |
a1eb1cf1 | 154 | |
9bfbb130 SM |
155 | where HIGHLIGHT should be either MATCH-HIGHLIGHT or MATCH-ANCHORED. |
156 | ||
a078558d SM |
157 | FORM is an expression, whose value should be a keyword element, evaluated when |
158 | the keyword is (first) used in a buffer. This feature can be used to provide a | |
159 | keyword that can only be generated when Font Lock mode is actually turned on. | |
160 | ||
9bfbb130 | 161 | For highlighting single items, typically only MATCH-HIGHLIGHT is required. |
d9f7b2d3 | 162 | However, if an item or (typically) items are to be highlighted following the |
9bfbb130 SM |
163 | instance of another item (the anchor) then MATCH-ANCHORED may be required. |
164 | ||
165 | MATCH-HIGHLIGHT should be of the form: | |
166 | ||
167 | (MATCH FACENAME OVERRIDE LAXMATCH) | |
168 | ||
169 | Where MATCHER can be either the regexp to search for, or the function name to | |
170 | call to make the search (called with one argument, the limit of the search). | |
171 | MATCH is the subexpression of MATCHER to be highlighted. FACENAME is an | |
172 | expression whose value is the face name to use. FACENAME's default attributes | |
173 | may be defined in `font-lock-face-attributes'. | |
a1eb1cf1 RS |
174 | |
175 | OVERRIDE and LAXMATCH are flags. If OVERRIDE is t, existing fontification may | |
9bfbb130 SM |
176 | be overwritten. If `keep', only parts not already fontified are highlighted. |
177 | If `prepend' or `append', existing fontification is merged with the new, in | |
178 | which the new or existing fontification, respectively, takes precedence. | |
d9f7b2d3 | 179 | If LAXMATCH is non-nil, no error is signaled if there is no MATCH in MATCHER. |
a1eb1cf1 | 180 | |
9bfbb130 SM |
181 | For example, an element of the form highlights (if not already highlighted): |
182 | ||
876f2438 SM |
183 | \"\\\\\\=<foo\\\\\\=>\" Discrete occurrences of \"foo\" in the value of the |
184 | variable `font-lock-keyword-face'. | |
9bfbb130 SM |
185 | (\"fu\\\\(bar\\\\)\" . 1) Substring \"bar\" within all occurrences of \"fubar\" in |
186 | the value of `font-lock-keyword-face'. | |
187 | (\"fubar\" . fubar-face) Occurrences of \"fubar\" in the value of `fubar-face'. | |
188 | (\"foo\\\\|bar\" 0 foo-bar-face t) | |
189 | Occurrences of either \"foo\" or \"bar\" in the value | |
190 | of `foo-bar-face', even if already highlighted. | |
191 | ||
192 | MATCH-ANCHORED should be of the form: | |
193 | ||
194 | (MATCHER PRE-MATCH-FORM POST-MATCH-FORM MATCH-HIGHLIGHT ...) | |
195 | ||
876f2438 SM |
196 | Where MATCHER is as for MATCH-HIGHLIGHT with one exception. The limit of the |
197 | search is currently guaranteed to be (no greater than) the end of the line. | |
198 | PRE-MATCH-FORM and POST-MATCH-FORM are evaluated before the first, and after | |
199 | the last, instance MATCH-ANCHORED's MATCHER is used. Therefore they can be | |
200 | used to initialise before, and cleanup after, MATCHER is used. Typically, | |
201 | PRE-MATCH-FORM is used to move to some position relative to the original | |
202 | MATCHER, before starting with MATCH-ANCHORED's MATCHER. POST-MATCH-FORM might | |
203 | be used to move, before resuming with MATCH-ANCHORED's parent's MATCHER. | |
9bfbb130 SM |
204 | |
205 | For example, an element of the form highlights (if not already highlighted): | |
206 | ||
876f2438 | 207 | (\"\\\\\\=<anchor\\\\\\=>\" (0 anchor-face) (\"\\\\\\=<item\\\\\\=>\" nil nil (0 item-face))) |
9bfbb130 | 208 | |
876f2438 SM |
209 | Discrete occurrences of \"anchor\" in the value of `anchor-face', and subsequent |
210 | discrete occurrences of \"item\" (on the same line) in the value of `item-face'. | |
211 | (Here PRE-MATCH-FORM and POST-MATCH-FORM are nil. Therefore \"item\" is | |
212 | initially searched for starting from the end of the match of \"anchor\", and | |
213 | searching for subsequent instance of \"anchor\" resumes from where searching | |
214 | for \"item\" concluded.) | |
9bfbb130 SM |
215 | |
216 | Note that the MATCH-ANCHORED feature is experimental; in the future, we may | |
217 | replace it with other ways of providing this functionality. | |
218 | ||
a1eb1cf1 RS |
219 | These regular expressions should not match text which spans lines. While |
220 | \\[font-lock-fontify-buffer] handles multi-line patterns correctly, updating | |
221 | when you edit the buffer does not, since it considers text one line at a time. | |
222 | ||
9bfbb130 | 223 | Be very careful composing regexps for this list; |
a1eb1cf1 | 224 | the wrong pattern can dramatically slow things down!") |
9bfbb130 | 225 | (make-variable-buffer-local 'font-lock-keywords) |
030f4a35 | 226 | |
b89e1134 SM |
227 | (defvar font-lock-defaults nil |
228 | "If set by a major mode, should be the defaults for Font Lock mode. | |
9bfbb130 | 229 | The value should be like the `cdr' of an item in `font-lock-defaults-alist'.") |
b89e1134 SM |
230 | |
231 | (defvar font-lock-defaults-alist | |
9bfbb130 SM |
232 | (let (;; For C and Lisp modes we use `beginning-of-defun', rather than nil, |
233 | ;; for SYNTAX-BEGIN. Thus the calculation of the cache is usually | |
234 | ;; faster but not infallible, so we risk mis-fontification. --sm. | |
fb512de9 | 235 | (c-mode-defaults |
9bfbb130 SM |
236 | '((c-font-lock-keywords c-font-lock-keywords-1 |
237 | c-font-lock-keywords-2 c-font-lock-keywords-3) | |
a078558d SM |
238 | nil nil ((?_ . "w")) beginning-of-defun |
239 | (font-lock-mark-block-function . mark-defun))) | |
fb512de9 SM |
240 | (c++-mode-defaults |
241 | '((c++-font-lock-keywords c++-font-lock-keywords-1 | |
9bfbb130 | 242 | c++-font-lock-keywords-2 c++-font-lock-keywords-3) |
a078558d SM |
243 | nil nil ((?_ . "w") (?~ . "w")) beginning-of-defun |
244 | (font-lock-mark-block-function . mark-defun))) | |
fb512de9 | 245 | (lisp-mode-defaults |
9bfbb130 SM |
246 | '((lisp-font-lock-keywords |
247 | lisp-font-lock-keywords-1 lisp-font-lock-keywords-2) | |
248 | nil nil | |
249 | ((?: . "w") (?- . "w") (?* . "w") (?+ . "w") (?. . "w") (?< . "w") | |
250 | (?> . "w") (?= . "w") (?! . "w") (?? . "w") (?$ . "w") (?% . "w") | |
251 | (?_ . "w") (?& . "w") (?~ . "w") (?^ . "w") (?/ . "w")) | |
a078558d | 252 | beginning-of-defun (font-lock-mark-block-function . mark-defun))) |
d46c21ec | 253 | (scheme-mode-defaults |
9bfbb130 SM |
254 | '(scheme-font-lock-keywords nil t |
255 | ((?: . "w") (?- . "w") (?* . "w") (?+ . "w") (?. . "w") (?< . "w") | |
256 | (?> . "w") (?= . "w") (?! . "w") (?? . "w") (?$ . "w") (?% . "w") | |
257 | (?_ . "w") (?& . "w") (?~ . "w") (?^ . "w") (?/ . "w")) | |
a078558d | 258 | beginning-of-defun (font-lock-mark-block-function . mark-defun))) |
d46c21ec | 259 | ;; For TeX modes we could use `backward-paragraph' for the same reason. |
a078558d SM |
260 | ;; But we don't, because paragraph breaks are arguably likely enough to |
261 | ;; occur within a genuine syntactic block to make it too risky. | |
262 | ;; However, we do specify a MARK-BLOCK function as that cannot result | |
263 | ;; in a mis-fontification even if it might not fontify enough. --sm. | |
264 | (tex-mode-defaults '(tex-font-lock-keywords nil nil ((?$ . "\"")) nil | |
265 | (font-lock-mark-block-function . mark-paragraph))) | |
d46c21ec | 266 | ) |
826b2925 | 267 | (list |
d46c21ec SM |
268 | (cons 'bibtex-mode tex-mode-defaults) |
269 | (cons 'c++-c-mode c-mode-defaults) | |
270 | (cons 'c++-mode c++-mode-defaults) | |
271 | (cons 'c-mode c-mode-defaults) | |
9bfbb130 | 272 | (cons 'elec-c-mode c-mode-defaults) |
d46c21ec SM |
273 | (cons 'emacs-lisp-mode lisp-mode-defaults) |
274 | (cons 'inferior-scheme-mode scheme-mode-defaults) | |
275 | (cons 'latex-mode tex-mode-defaults) | |
276 | (cons 'lisp-mode lisp-mode-defaults) | |
277 | (cons 'lisp-interaction-mode lisp-mode-defaults) | |
278 | (cons 'plain-tex-mode tex-mode-defaults) | |
279 | (cons 'scheme-mode scheme-mode-defaults) | |
280 | (cons 'scheme-interaction-mode scheme-mode-defaults) | |
281 | (cons 'slitex-mode tex-mode-defaults) | |
282 | (cons 'tex-mode tex-mode-defaults))) | |
9bfbb130 | 283 | "Alist of default major mode and Font Lock defaults. |
b89e1134 | 284 | Each item should be a list of the form: |
d46c21ec | 285 | |
a2b8e66b | 286 | (MAJOR-MODE . (KEYWORDS KEYWORDS-ONLY CASE-FOLD SYNTAX-ALIST SYNTAX-BEGIN |
a078558d | 287 | ...)) |
d46c21ec | 288 | |
9bfbb130 SM |
289 | where MAJOR-MODE is a symbol. KEYWORDS may be a symbol (a variable or function |
290 | whose value is the keywords to use for fontification) or a list of symbols. | |
291 | If KEYWORDS-ONLY is non-nil, syntactic fontification (strings and comments) is | |
292 | not performed. If CASE-FOLD is non-nil, the case of the keywords is ignored | |
293 | when fontifying. If SYNTAX-ALIST is non-nil, it should be a list of cons pairs | |
294 | of the form (CHAR . STRING) used to set the local Font Lock syntax table, for | |
295 | keyword and syntactic fontification (see `modify-syntax-entry'). | |
296 | ||
297 | If SYNTAX-BEGIN is non-nil, it should be a function with no args used to move | |
298 | backwards outside any enclosing syntactic block, for syntactic fontification. | |
299 | Typical values are `beginning-of-line' (i.e., the start of the line is known to | |
300 | be outside a syntactic block), or `beginning-of-defun' for programming modes or | |
301 | `backward-paragraph' for textual modes (i.e., the mode-dependent function is | |
302 | known to move outside a syntactic block). If nil, the beginning of the buffer | |
303 | is used as a position outside of a syntactic block, in the worst case. | |
d46c21ec SM |
304 | |
305 | These item elements are used by Font Lock mode to set the variables | |
9bfbb130 | 306 | `font-lock-keywords', `font-lock-keywords-only', |
d46c21ec | 307 | `font-lock-keywords-case-fold-search', `font-lock-syntax-table' and |
a2b8e66b SM |
308 | `font-lock-beginning-of-syntax-function', respectively. |
309 | ||
a078558d SM |
310 | Further item elements are alists of the form (VARIABLE . VALUE) and are in no |
311 | particular order. Each VARIABLE is made buffer-local before set to VALUE. | |
a2b8e66b | 312 | |
a078558d SM |
313 | Currently, appropriate variables include `font-lock-mark-block-function'. |
314 | If this is non-nil, it should be a function with no args used to mark any | |
315 | enclosing block of text, for fontification via \\[font-lock-fontify-block]. | |
316 | Typical values are `mark-defun' for programming modes or `mark-paragraph' for | |
317 | textual modes (i.e., the mode-dependent function is known to put point and mark | |
318 | around a text block relevant to that mode). | |
a2b8e66b | 319 | |
a078558d | 320 | Other variables include those for buffer-specialised fontification functions, |
a2b8e66b | 321 | `font-lock-fontify-buffer-function', `font-lock-unfontify-buffer-function', |
a078558d SM |
322 | `font-lock-fontify-region-function', `font-lock-unfontify-region-function' and |
323 | `font-lock-inhibit-thing-lock'.") | |
d46c21ec | 324 | |
9bfbb130 | 325 | (defvar font-lock-keywords-only nil |
d46c21ec SM |
326 | "*Non-nil means Font Lock should not fontify comments or strings. |
327 | This is normally set via `font-lock-defaults'.") | |
b89e1134 | 328 | |
030f4a35 | 329 | (defvar font-lock-keywords-case-fold-search nil |
d46c21ec SM |
330 | "*Non-nil means the patterns in `font-lock-keywords' are case-insensitive. |
331 | This is normally set via `font-lock-defaults'.") | |
030f4a35 | 332 | |
b056da51 | 333 | (defvar font-lock-syntax-table nil |
799761f0 | 334 | "Non-nil means use this syntax table for fontifying. |
d46c21ec SM |
335 | If this is nil, the major mode's syntax table is used. |
336 | This is normally set via `font-lock-defaults'.") | |
337 | ||
9bfbb130 SM |
338 | ;; If this is nil, we only use the beginning of the buffer if we can't use |
339 | ;; `font-lock-cache-position' and `font-lock-cache-state'. | |
d46c21ec | 340 | (defvar font-lock-beginning-of-syntax-function nil |
9bfbb130 | 341 | "*Non-nil means use this function to move back outside of a syntactic block. |
a078558d SM |
342 | When called with no args it should leave point at the beginning of any |
343 | enclosing syntactic block. | |
9bfbb130 | 344 | If this is nil, the beginning of the buffer is used (in the worst case). |
d46c21ec | 345 | This is normally set via `font-lock-defaults'.") |
b056da51 | 346 | |
a078558d SM |
347 | (defvar font-lock-mark-block-function nil |
348 | "*Non-nil means use this function to mark a block of text. | |
349 | When called with no args it should leave point at the beginning of any | |
350 | enclosing textual block and mark at the end. | |
351 | This is normally set via `font-lock-defaults'.") | |
352 | ||
a2b8e66b SM |
353 | (defvar font-lock-fontify-buffer-function 'font-lock-default-fontify-buffer |
354 | "Function to use for fontifying the buffer. | |
355 | This is normally set via `font-lock-defaults'.") | |
356 | ||
357 | (defvar font-lock-unfontify-buffer-function 'font-lock-default-unfontify-buffer | |
358 | "Function to use for unfontifying the buffer. | |
359 | This is used when turning off Font Lock mode. | |
360 | This is normally set via `font-lock-defaults'.") | |
361 | ||
362 | (defvar font-lock-fontify-region-function 'font-lock-default-fontify-region | |
363 | "Function to use for fontifying a region. | |
364 | It should take two args, the beginning and end of the region, and an optional | |
365 | third arg VERBOSE. If non-nil, the function should print status messages. | |
366 | This is normally set via `font-lock-defaults'.") | |
367 | ||
368 | (defvar font-lock-unfontify-region-function 'font-lock-default-unfontify-region | |
369 | "Function to use for unfontifying a region. | |
370 | It should take two args, the beginning and end of the region. | |
371 | This is normally set via `font-lock-defaults'.") | |
372 | ||
373 | (defvar font-lock-inhibit-thing-lock nil | |
374 | "List of Font Lock mode related modes that should not be turned on. | |
375 | Currently, valid mode names as `fast-lock-mode' and `lazy-lock-mode'. | |
376 | This is normally set via `font-lock-defaults'.") | |
377 | ||
9bfbb130 SM |
378 | (defvar font-lock-mode nil) ; For the modeline. |
379 | (defvar font-lock-fontified nil) ; Whether we have fontified the buffer. | |
380 | (put 'font-lock-fontified 'permanent-local t) | |
826b2925 | 381 | |
9bfbb130 SM |
382 | ;;;###autoload |
383 | (defvar font-lock-mode-hook nil | |
384 | "Function or functions to run on entry to Font Lock mode.") | |
030f4a35 | 385 | \f |
a2b8e66b | 386 | ;; User commands. |
030f4a35 RS |
387 | |
388 | ;;;###autoload | |
389 | (defun font-lock-mode (&optional arg) | |
e595fa35 | 390 | "Toggle Font Lock mode. |
030f4a35 RS |
391 | With arg, turn Font Lock mode on if and only if arg is positive. |
392 | ||
393 | When Font Lock mode is enabled, text is fontified as you type it: | |
394 | ||
a1eb1cf1 RS |
395 | - Comments are displayed in `font-lock-comment-face'; |
396 | - Strings are displayed in `font-lock-string-face'; | |
397 | - Certain other expressions are displayed in other faces according to the | |
398 | value of the variable `font-lock-keywords'. | |
399 | ||
400 | You can enable Font Lock mode in any major mode automatically by turning on in | |
401 | the major mode's hook. For example, put in your ~/.emacs: | |
402 | ||
403 | (add-hook 'c-mode-hook 'turn-on-font-lock) | |
404 | ||
405 | Or for any visited file with the following in your ~/.emacs: | |
406 | ||
407 | (add-hook 'find-file-hooks 'turn-on-font-lock) | |
408 | ||
a2b8e66b SM |
409 | Alternatively, you can use Global Font Lock mode to automagically turn on Font |
410 | Lock mode in buffers whose major mode supports it, or in buffers whose major | |
411 | mode is one of `font-lock-global-modes'. For example, put in your ~/.emacs: | |
412 | ||
413 | (global-font-lock-mode t) | |
414 | ||
a1eb1cf1 RS |
415 | The default Font Lock mode faces and their attributes are defined in the |
416 | variable `font-lock-face-attributes', and Font Lock mode default settings in | |
9bfbb130 SM |
417 | the variable `font-lock-defaults-alist'. You can set your own default settings |
418 | for some mode, by setting a buffer local value for `font-lock-defaults', via | |
419 | its mode hook. | |
030f4a35 | 420 | |
826b2925 | 421 | Where modes support different levels of fontification, you can use the variable |
fb512de9 | 422 | `font-lock-maximum-decoration' to specify which level you generally prefer. |
b89e1134 SM |
423 | When you turn Font Lock mode on/off the buffer is fontified/defontified, though |
424 | fontification occurs only if the buffer is less than `font-lock-maximum-size'. | |
7d7d915a SM |
425 | |
426 | To fontify a buffer, without turning on Font Lock mode and regardless of buffer | |
427 | size, you can use \\[font-lock-fontify-buffer]. | |
a078558d SM |
428 | |
429 | To fontify a block (the function or paragraph containing point, or a number of | |
430 | lines around point), perhaps because modification on the current line caused | |
431 | syntactic change on other lines, you can use \\[font-lock-fontify-block]." | |
030f4a35 | 432 | (interactive "P") |
a2b8e66b SM |
433 | ;; Don't turn on Font Lock mode if we don't have a display (we're running a |
434 | ;; batch job) or if the buffer is invisible (the name starts with a space). | |
435 | (let ((on-p (and (not noninteractive) | |
436 | (not (eq (aref (buffer-name) 0) ?\ )) | |
437 | (if arg | |
438 | (> (prefix-numeric-value arg) 0) | |
439 | (not font-lock-mode)))) | |
9bfbb130 SM |
440 | (maximum-size (if (not (consp font-lock-maximum-size)) |
441 | font-lock-maximum-size | |
442 | (cdr (or (assq major-mode font-lock-maximum-size) | |
443 | (assq t font-lock-maximum-size)))))) | |
a1eb1cf1 | 444 | (if (not on-p) |
876f2438 SM |
445 | (remove-hook 'after-change-functions 'font-lock-after-change-function |
446 | t) | |
447 | (make-local-hook 'after-change-functions) | |
448 | (add-hook 'after-change-functions 'font-lock-after-change-function | |
449 | nil t)) | |
030f4a35 RS |
450 | (set (make-local-variable 'font-lock-mode) on-p) |
451 | (cond (on-p | |
452 | (font-lock-set-defaults) | |
a2b8e66b | 453 | ;; If buffer is reverted, must clean up the state. |
876f2438 SM |
454 | (make-local-hook 'before-revert-hook) |
455 | (make-local-hook 'after-revert-hook) | |
876f2438 SM |
456 | (add-hook 'before-revert-hook 'font-lock-revert-setup nil t) |
457 | (add-hook 'after-revert-hook 'font-lock-revert-cleanup nil t) | |
030f4a35 | 458 | (run-hooks 'font-lock-mode-hook) |
b89e1134 SM |
459 | (cond (font-lock-fontified |
460 | nil) | |
a2b8e66b SM |
461 | ((or (null maximum-size) (<= (buffer-size) maximum-size) |
462 | (not (eq font-lock-fontify-buffer-function | |
463 | (default-value | |
464 | 'font-lock-fontify-buffer-function)))) | |
b89e1134 SM |
465 | (font-lock-fontify-buffer)) |
466 | (font-lock-verbose | |
467 | (message "Fontifying %s... buffer too big." (buffer-name))))) | |
030f4a35 | 468 | (font-lock-fontified |
a2b8e66b | 469 | (font-lock-unfontify-buffer) |
876f2438 SM |
470 | (remove-hook 'before-revert-hook 'font-lock-revert-setup t) |
471 | (remove-hook 'after-revert-hook 'font-lock-revert-cleanup t) | |
a2b8e66b SM |
472 | (font-lock-thing-lock-cleanup) |
473 | (font-lock-unset-defaults)) | |
799761f0 | 474 | (t |
876f2438 SM |
475 | (remove-hook 'before-revert-hook 'font-lock-revert-setup t) |
476 | (remove-hook 'after-revert-hook 'font-lock-revert-cleanup t) | |
a2b8e66b SM |
477 | (font-lock-thing-lock-cleanup) |
478 | (font-lock-unset-defaults))) | |
030f4a35 RS |
479 | (force-mode-line-update))) |
480 | ||
a1eb1cf1 RS |
481 | ;;;###autoload |
482 | (defun turn-on-font-lock () | |
2346238d | 483 | "Turn on Font Lock mode, if the terminal can display it." |
a2b8e66b SM |
484 | (if window-system (font-lock-mode t))) |
485 | \f | |
486 | ;; Code for Global Font Lock mode. | |
487 | ||
488 | ;; A few people have hassled in the past for a way to make it easier to turn on | |
489 | ;; Font Lock mode, perhaps the same way hilit19.el/hl319.el does. I've always | |
490 | ;; balked at that way, as I see it as just re-moulding the same problem in | |
491 | ;; another form. That is; some person would still have to keep track of which | |
492 | ;; modes (which may not even be distributed with Emacs) support Font Lock mode. | |
493 | ;; The list would always be out of date. And that person might have to be me. | |
494 | ||
495 | ;; In the latest of these discussions the following hack came to mind. It is a | |
496 | ;; gross hack, but it generally works. We use the convention that major modes | |
497 | ;; start by calling the function `kill-all-local-variables', which in turn runs | |
498 | ;; functions on the hook variable `change-major-mode-hook'. We attach our | |
499 | ;; function `font-lock-change-major-mode' to that hook. Of course, when this | |
500 | ;; hook is run, the major mode is in the process of being changed and we do not | |
501 | ;; know what the final major mode will be. So, `font-lock-change-major-mode' | |
502 | ;; only (a) notes the name of the current buffer, and (b) adds our function | |
503 | ;; `turn-on-font-lock-if-supported' to the hook variable `post-command-hook'. | |
504 | ;; By the time the functions on `post-command-hook' are run, the new major mode | |
505 | ;; is assumed to be in place. | |
506 | ||
507 | ;; Naturally this requires that (a) major modes run `kill-all-local-variables', | |
508 | ;; as they are supposed to do, and (b) the major mode is in place after the | |
509 | ;; command that ran `kill-all-local-variables' has finished. Arguably, any | |
510 | ;; major mode that does not follow the convension (a) is broken, and I can't | |
511 | ;; think of any reason why (b) would not be met. I don't know of any major | |
512 | ;; modes that do not follow the convension (a), but I'm sure there are some | |
513 | ;; obscure ones out there somewhere. Even if it works, it is still not clean. | |
514 | ||
515 | ;; Probably the cleanest solution is to have each major mode function run some | |
516 | ;; hook, e.g., `major-mode-hook', but maybe implementing that change is | |
517 | ;; impractical. I am personally against making `setq' a macro or be advised | |
518 | ;; (space'n'speed), or have a special function such as `set-major-mode' (a | |
519 | ;; `major-mode-hook' is simpler), but maybe someone can come up with another | |
520 | ;; solution? --sm. | |
521 | ||
a078558d SM |
522 | (defvar font-lock-cache-buffers nil) ; For remembering buffers. |
523 | (defvar change-major-mode-hook nil) ; Make sure it's not void. | |
524 | ||
a2b8e66b SM |
525 | ;;;###autoload |
526 | (defvar font-lock-global-modes t | |
527 | "*List of modes for which Font Lock mode is automatically turned on. | |
528 | Global Font Lock mode is controlled by the `global-font-lock-mode' command. | |
529 | If nil, means no modes have Font Lock mode automatically turned on. | |
530 | If t, all modes that support Font Lock mode have it automatically turned on. | |
531 | If a list, each element should be a major mode symbol name such as `c-mode'. | |
532 | Font Lock is automatically turned on if the buffer major mode supports it and | |
533 | is in this list. The sense of the list is negated if it begins with `not'.") | |
534 | ||
535 | ;;;###autoload | |
536 | (defun global-font-lock-mode (&optional arg) | |
537 | "Toggle Global Font Lock mode. | |
538 | With arg, turn Global Font Lock mode on if and only if arg is positive. | |
539 | ||
540 | When Global Font Lock mode is enabled, Font Lock mode is automagically | |
541 | turned on in a buffer if its major mode is one of `font-lock-global-modes'." | |
542 | (interactive "P") | |
543 | (if (if arg | |
544 | (<= (prefix-numeric-value arg) 0) | |
545 | (memq 'font-lock-change-major-mode change-major-mode-hook)) | |
546 | (remove-hook 'change-major-mode-hook 'font-lock-change-major-mode) | |
547 | (add-hook 'change-major-mode-hook 'font-lock-change-major-mode) | |
548 | (add-hook 'post-command-hook 'turn-on-font-lock-if-supported) | |
549 | (setq font-lock-cache-buffers (buffer-list)))) | |
550 | ||
a2b8e66b SM |
551 | (defun font-lock-change-major-mode () |
552 | ;; Gross hack warning: Delicate readers should avert eyes now. | |
553 | ;; Something is running `kill-all-local-variables', which generally means | |
554 | ;; the major mode is being changed. Run `turn-on-font-lock-if-supported' | |
555 | ;; after the current command has finished. | |
556 | (add-hook 'post-command-hook 'turn-on-font-lock-if-supported) | |
557 | (add-to-list 'font-lock-cache-buffers (current-buffer))) | |
558 | ||
559 | (defun turn-on-font-lock-if-supported () | |
560 | ;; Gross hack warning: Delicate readers should avert eyes now. | |
561 | ;; Turn on Font Lock mode if (a) it's not already on, (b) the major mode | |
562 | ;; supports Font Lock mode, and (c) it's one of `font-lock-global-modes'. | |
563 | (remove-hook 'post-command-hook 'turn-on-font-lock-if-supported) | |
564 | (while font-lock-cache-buffers | |
565 | (if (buffer-name (car font-lock-cache-buffers)) | |
566 | (save-excursion | |
567 | (set-buffer (car font-lock-cache-buffers)) | |
568 | (if (and (not font-lock-mode) | |
569 | (or font-lock-defaults | |
570 | (assq major-mode font-lock-defaults-alist)) | |
571 | (or (eq font-lock-global-modes t) | |
572 | (if (eq (car-safe font-lock-global-modes) 'not) | |
573 | (not (memq major-mode (cdr font-lock-global-modes))) | |
574 | (memq major-mode font-lock-global-modes)))) | |
575 | (turn-on-font-lock)))) | |
576 | (setq font-lock-cache-buffers (cdr font-lock-cache-buffers)))) | |
577 | ||
578 | ;; End of Global Font Lock mode. | |
579 | \f | |
580 | ;; Fontification functions. | |
a1eb1cf1 | 581 | |
a1eb1cf1 | 582 | ;;;###autoload |
030f4a35 | 583 | (defun font-lock-fontify-buffer () |
a1eb1cf1 | 584 | "Fontify the current buffer the way `font-lock-mode' would." |
030f4a35 | 585 | (interactive) |
a2b8e66b SM |
586 | (let ((font-lock-verbose (or font-lock-verbose (interactive-p)))) |
587 | (funcall font-lock-fontify-buffer-function))) | |
588 | ||
589 | (defun font-lock-unfontify-buffer () | |
590 | (funcall font-lock-unfontify-buffer-function)) | |
591 | ||
592 | (defun font-lock-fontify-region (beg end &optional loudly) | |
593 | (funcall font-lock-fontify-region-function beg end loudly)) | |
594 | ||
595 | (defun font-lock-unfontify-region (beg end) | |
596 | (funcall font-lock-unfontify-region-function beg end)) | |
597 | ||
598 | (defun font-lock-default-fontify-buffer () | |
599 | (let ((verbose (and font-lock-verbose (> (buffer-size) 0)))) | |
a1eb1cf1 | 600 | (if verbose (message "Fontifying %s..." (buffer-name))) |
7d7d915a SM |
601 | ;; Make sure we have the right `font-lock-keywords' etc. |
602 | (if (not font-lock-mode) (font-lock-set-defaults)) | |
603 | ;; Make sure we fontify etc. in the whole buffer. | |
604 | (save-restriction | |
605 | (widen) | |
606 | (condition-case nil | |
607 | (save-excursion | |
608 | (save-match-data | |
609 | (font-lock-fontify-region (point-min) (point-max) verbose) | |
271c888a | 610 | (font-lock-after-fontify-buffer) |
7d7d915a SM |
611 | (setq font-lock-fontified t))) |
612 | ;; We don't restore the old fontification, so it's best to unfontify. | |
a078558d SM |
613 | (quit (font-lock-unfontify-buffer)))) |
614 | (if verbose (message "Fontifying %s... %s." (buffer-name) | |
615 | (if font-lock-fontified "done" "aborted"))))) | |
7d7d915a | 616 | |
a2b8e66b SM |
617 | (defun font-lock-default-unfontify-buffer () |
618 | (save-restriction | |
619 | (widen) | |
620 | (font-lock-unfontify-region (point-min) (point-max)) | |
271c888a | 621 | (font-lock-after-unfontify-buffer) |
a2b8e66b | 622 | (setq font-lock-fontified nil))) |
9bfbb130 SM |
623 | |
624 | ;; We use this wrapper. However, `font-lock-fontify-region' used to be the | |
625 | ;; name used for `font-lock-fontify-syntactically-region', so a change isn't | |
626 | ;; back-compatible. But you shouldn't be calling these directly, should you? | |
a2b8e66b | 627 | (defun font-lock-default-fontify-region (beg end loudly) |
876f2438 SM |
628 | (let ((modified (buffer-modified-p)) |
629 | (buffer-undo-list t) (inhibit-read-only t) | |
630 | (old-syntax-table (syntax-table)) | |
7d7d915a | 631 | before-change-functions after-change-functions |
876f2438 SM |
632 | buffer-file-name buffer-file-truename) |
633 | (unwind-protect | |
a078558d SM |
634 | (save-restriction |
635 | (widen) | |
876f2438 SM |
636 | ;; Use the fontification syntax table, if any. |
637 | (if font-lock-syntax-table (set-syntax-table font-lock-syntax-table)) | |
638 | ;; Now do the fontification. | |
639 | (if font-lock-keywords-only | |
640 | (font-lock-unfontify-region beg end) | |
641 | (font-lock-fontify-syntactically-region beg end loudly)) | |
642 | (font-lock-fontify-keywords-region beg end loudly)) | |
643 | ;; Clean up. | |
644 | (set-syntax-table old-syntax-table) | |
645 | (and (not modified) (buffer-modified-p) (set-buffer-modified-p nil))))) | |
9bfbb130 SM |
646 | |
647 | ;; The following must be rethought, since keywords can override fontification. | |
648 | ; ;; Now scan for keywords, but not if we are inside a comment now. | |
649 | ; (or (and (not font-lock-keywords-only) | |
650 | ; (let ((state (parse-partial-sexp beg end nil nil | |
651 | ; font-lock-cache-state))) | |
652 | ; (or (nth 4 state) (nth 7 state)))) | |
653 | ; (font-lock-fontify-keywords-region beg end)) | |
654 | ||
a2b8e66b | 655 | (defun font-lock-default-unfontify-region (beg end) |
9bfbb130 SM |
656 | (let ((modified (buffer-modified-p)) |
657 | (buffer-undo-list t) (inhibit-read-only t) | |
7d7d915a | 658 | before-change-functions after-change-functions |
9bfbb130 SM |
659 | buffer-file-name buffer-file-truename) |
660 | (remove-text-properties beg end '(face nil)) | |
876f2438 | 661 | (and (not modified) (buffer-modified-p) (set-buffer-modified-p nil)))) |
9bfbb130 SM |
662 | |
663 | ;; Called when any modification is made to buffer text. | |
664 | (defun font-lock-after-change-function (beg end old-len) | |
665 | (save-excursion | |
666 | (save-match-data | |
667 | ;; Rescan between start of line from `beg' and start of line after `end'. | |
668 | (font-lock-fontify-region | |
669 | (progn (goto-char beg) (beginning-of-line) (point)) | |
670 | (progn (goto-char end) (forward-line 1) (point)))))) | |
a2b8e66b | 671 | |
a078558d SM |
672 | (defun font-lock-fontify-block (&optional arg) |
673 | "Fontify some lines the way `font-lock-fontify-buffer' would. | |
674 | The lines could be a function or paragraph, or a specified number of lines. | |
675 | If `font-lock-mark-block-function' non-nil and no ARG is given, it is used to | |
676 | delimit the region to fontify. | |
677 | If ARG is given, fontify that many lines before and after point, or 16 lines if | |
678 | no ARG is given and `font-lock-mark-block-function' is nil." | |
679 | (interactive "P") | |
a2b8e66b | 680 | (let ((font-lock-beginning-of-syntax-function nil)) |
a078558d SM |
681 | ;; Make sure we have the right `font-lock-keywords' etc. |
682 | (if (not font-lock-mode) (font-lock-set-defaults)) | |
a2b8e66b SM |
683 | (save-excursion |
684 | (save-match-data | |
685 | (condition-case error-data | |
a078558d SM |
686 | (if (or arg (not font-lock-mark-block-function)) |
687 | (let ((lines (if arg (prefix-numeric-value arg) 16))) | |
688 | (font-lock-fontify-region | |
689 | (save-excursion (forward-line (- lines)) (point)) | |
690 | (save-excursion (forward-line lines) (point)))) | |
691 | (funcall font-lock-mark-block-function) | |
692 | (font-lock-fontify-region (point) (mark))) | |
693 | ((error quit) (message "Fontifying block... %s" error-data))))))) | |
694 | ||
695 | (define-key esc-map "\C-g" 'font-lock-fontify-block) | |
9bfbb130 SM |
696 | \f |
697 | ;; Syntactic fontification functions. | |
698 | ||
a078558d SM |
699 | ;; These record the parse state at a particular position, always the start of a |
700 | ;; line. Used to make `font-lock-fontify-syntactically-region' faster. | |
701 | (defvar font-lock-cache-position nil) | |
702 | (defvar font-lock-cache-state nil) | |
703 | (make-variable-buffer-local 'font-lock-cache-position) | |
704 | (make-variable-buffer-local 'font-lock-cache-state) | |
705 | ||
9bfbb130 SM |
706 | (defun font-lock-fontify-syntactically-region (start end &optional loudly) |
707 | "Put proper face on each string and comment between START and END. | |
708 | START should be at the beginning of a line." | |
876f2438 | 709 | (let ((synstart (if comment-start-skip |
9bfbb130 SM |
710 | (concat "\\s\"\\|" comment-start-skip) |
711 | "\\s\"")) | |
712 | (comstart (if comment-start-skip | |
713 | (concat "\\s<\\|" comment-start-skip) | |
714 | "\\s<")) | |
9bfbb130 SM |
715 | state prev prevstate) |
716 | (if loudly (message "Fontifying %s... (syntactically...)" (buffer-name))) | |
a078558d SM |
717 | (goto-char start) |
718 | ;; | |
719 | ;; Find the state at the `beginning-of-line' before `start'. | |
720 | (if (eq start font-lock-cache-position) | |
721 | ;; Use the cache for the state of `start'. | |
722 | (setq state font-lock-cache-state) | |
723 | ;; Find the state of `start'. | |
724 | (if (null font-lock-beginning-of-syntax-function) | |
725 | ;; Use the state at the previous cache position, if any, or | |
726 | ;; otherwise calculate from `point-min'. | |
727 | (if (or (null font-lock-cache-position) | |
728 | (< start font-lock-cache-position)) | |
729 | (setq state (parse-partial-sexp (point-min) start)) | |
730 | (setq state (parse-partial-sexp font-lock-cache-position start | |
731 | nil nil font-lock-cache-state))) | |
732 | ;; Call the function to move outside any syntactic block. | |
733 | (funcall font-lock-beginning-of-syntax-function) | |
734 | (setq state (parse-partial-sexp (point) start))) | |
735 | ;; Cache the state and position of `start'. | |
736 | (setq font-lock-cache-state state | |
737 | font-lock-cache-position start)) | |
738 | ;; | |
739 | ;; If the region starts inside a string, show the extent of it. | |
740 | (if (nth 3 state) | |
741 | (let ((beg (point))) | |
742 | (while (and (re-search-forward "\\s\"" end 'move) | |
743 | (nth 3 (parse-partial-sexp beg (point) nil nil state)))) | |
744 | (put-text-property beg (point) 'face font-lock-string-face) | |
745 | (setq state (parse-partial-sexp beg (point) nil nil state)))) | |
746 | ;; | |
747 | ;; Likewise for a comment. | |
748 | (if (or (nth 4 state) (nth 7 state)) | |
749 | (let ((beg (point))) | |
750 | (save-restriction | |
751 | (narrow-to-region (point-min) end) | |
752 | (condition-case nil | |
753 | (progn | |
754 | (re-search-backward comstart (point-min) 'move) | |
755 | (forward-comment 1) | |
756 | ;; forward-comment skips all whitespace, | |
757 | ;; so go back to the real end of the comment. | |
758 | (skip-chars-backward " \t")) | |
759 | (error (goto-char end)))) | |
760 | (put-text-property beg (point) 'face font-lock-comment-face) | |
761 | (setq state (parse-partial-sexp beg (point) nil nil state)))) | |
762 | ;; | |
763 | ;; Find each interesting place between here and `end'. | |
764 | (while (and (< (point) end) | |
765 | (setq prev (point) prevstate state) | |
766 | (re-search-forward synstart end t) | |
767 | (progn | |
768 | ;; Clear out the fonts of what we skip over. | |
769 | (remove-text-properties prev (point) '(face nil)) | |
770 | ;; Verify the state at that place | |
771 | ;; so we don't get fooled by \" or \;. | |
772 | (setq state (parse-partial-sexp prev (point) | |
773 | nil nil state)))) | |
774 | (let ((here (point))) | |
775 | (if (or (nth 4 state) (nth 7 state)) | |
776 | ;; | |
777 | ;; We found a real comment start. | |
778 | (let ((beg (match-beginning 0))) | |
779 | (goto-char beg) | |
780 | (save-restriction | |
781 | (narrow-to-region (point-min) end) | |
782 | (condition-case nil | |
783 | (progn | |
784 | (forward-comment 1) | |
785 | ;; forward-comment skips all whitespace, | |
786 | ;; so go back to the real end of the comment. | |
787 | (skip-chars-backward " \t")) | |
788 | (error (goto-char end)))) | |
789 | (put-text-property beg (point) 'face font-lock-comment-face) | |
790 | (setq state (parse-partial-sexp here (point) nil nil state))) | |
791 | (if (nth 3 state) | |
876f2438 | 792 | ;; |
a078558d | 793 | ;; We found a real string start. |
876f2438 | 794 | (let ((beg (match-beginning 0))) |
a078558d SM |
795 | (while (and (re-search-forward "\\s\"" end 'move) |
796 | (nth 3 (parse-partial-sexp here (point) | |
797 | nil nil state)))) | |
798 | (put-text-property beg (point) 'face font-lock-string-face) | |
799 | (setq state (parse-partial-sexp here (point) | |
800 | nil nil state)))))) | |
801 | ;; | |
802 | ;; Make sure `prev' is non-nil after the loop | |
803 | ;; only if it was set on the very last iteration. | |
804 | (setq prev nil)) | |
876f2438 SM |
805 | ;; |
806 | ;; Clean up. | |
807 | (and prev (remove-text-properties prev end '(face nil))))) | |
9bfbb130 SM |
808 | \f |
809 | ;;; Additional text property functions. | |
810 | ||
811 | ;; The following three text property functions are not generally available (and | |
812 | ;; it's not certain that they should be) so they are inlined for speed. | |
813 | ;; The case for `fillin-text-property' is simple; it may or not be generally | |
814 | ;; useful. (Since it is used here, it is useful in at least one place.;-) | |
815 | ;; However, the case for `append-text-property' and `prepend-text-property' is | |
816 | ;; more complicated. Should they remove duplicate property values or not? If | |
817 | ;; so, should the first or last duplicate item remain? Or the one that was | |
818 | ;; added? In our implementation, the first duplicate remains. | |
819 | ||
820 | (defsubst font-lock-fillin-text-property (start end prop value &optional object) | |
821 | "Fill in one property of the text from START to END. | |
822 | Arguments PROP and VALUE specify the property and value to put where none are | |
823 | already in place. Therefore existing property values are not overwritten. | |
824 | Optional argument OBJECT is the string or buffer containing the text." | |
825 | (let ((start (text-property-any start end prop nil object)) next) | |
826 | (while start | |
827 | (setq next (next-single-property-change start prop object end)) | |
828 | (put-text-property start next prop value object) | |
829 | (setq start (text-property-any next end prop nil object))))) | |
830 | ||
831 | ;; This function (from simon's unique.el) is rewritten and inlined for speed. | |
832 | ;(defun unique (list function) | |
833 | ; "Uniquify LIST, deleting elements using FUNCTION. | |
834 | ;Return the list with subsequent duplicate items removed by side effects. | |
835 | ;FUNCTION is called with an element of LIST and a list of elements from LIST, | |
836 | ;and should return the list of elements with occurrences of the element removed, | |
837 | ;i.e., a function such as `delete' or `delq'. | |
838 | ;This function will work even if LIST is unsorted. See also `uniq'." | |
839 | ; (let ((list list)) | |
840 | ; (while list | |
841 | ; (setq list (setcdr list (funcall function (car list) (cdr list)))))) | |
842 | ; list) | |
843 | ||
844 | (defsubst font-lock-unique (list) | |
845 | "Uniquify LIST, deleting elements using `delq'. | |
846 | Return the list with subsequent duplicate items removed by side effects." | |
847 | (let ((list list)) | |
848 | (while list | |
849 | (setq list (setcdr list (delq (car list) (cdr list)))))) | |
850 | list) | |
851 | ||
852 | ;; A generalisation of `facemenu-add-face' for any property, but without the | |
853 | ;; removal of inactive faces via `facemenu-discard-redundant-faces' and special | |
854 | ;; treatment of `default'. Uses `unique' to remove duplicate property values. | |
855 | (defsubst font-lock-prepend-text-property (start end prop value &optional object) | |
856 | "Prepend to one property of the text from START to END. | |
857 | Arguments PROP and VALUE specify the property and value to prepend to the value | |
858 | already in place. The resulting property values are always lists, and unique. | |
859 | Optional argument OBJECT is the string or buffer containing the text." | |
860 | (let ((val (if (listp value) value (list value))) next prev) | |
861 | (while (/= start end) | |
862 | (setq next (next-single-property-change start prop object end) | |
863 | prev (get-text-property start prop object)) | |
864 | (put-text-property | |
865 | start next prop | |
866 | (font-lock-unique (append val (if (listp prev) prev (list prev)))) | |
867 | object) | |
868 | (setq start next)))) | |
869 | ||
870 | (defsubst font-lock-append-text-property (start end prop value &optional object) | |
871 | "Append to one property of the text from START to END. | |
872 | Arguments PROP and VALUE specify the property and value to append to the value | |
873 | already in place. The resulting property values are always lists, and unique. | |
874 | Optional argument OBJECT is the string or buffer containing the text." | |
875 | (let ((val (if (listp value) value (list value))) next prev) | |
876 | (while (/= start end) | |
877 | (setq next (next-single-property-change start prop object end) | |
878 | prev (get-text-property start prop object)) | |
879 | (put-text-property | |
880 | start next prop | |
881 | (font-lock-unique (append (if (listp prev) prev (list prev)) val)) | |
882 | object) | |
883 | (setq start next)))) | |
884 | \f | |
885 | ;;; Regexp fontification functions. | |
886 | ||
887 | (defsubst font-lock-apply-highlight (highlight) | |
888 | "Apply HIGHLIGHT following a match. | |
889 | HIGHLIGHT should be of the form MATCH-HIGHLIGHT, see `font-lock-keywords'." | |
890 | (let* ((match (nth 0 highlight)) | |
891 | (start (match-beginning match)) (end (match-end match)) | |
892 | (override (nth 2 highlight))) | |
893 | (cond ((not start) | |
894 | ;; No match but we might not signal an error. | |
895 | (or (nth 3 highlight) | |
896 | (error "No match %d in highlight %S" match highlight))) | |
897 | ((not override) | |
898 | ;; Cannot override existing fontification. | |
899 | (or (text-property-not-all start end 'face nil) | |
900 | (put-text-property start end 'face (eval (nth 1 highlight))))) | |
901 | ((eq override t) | |
902 | ;; Override existing fontification. | |
903 | (put-text-property start end 'face (eval (nth 1 highlight)))) | |
904 | ((eq override 'keep) | |
905 | ;; Keep existing fontification. | |
906 | (font-lock-fillin-text-property start end 'face | |
907 | (eval (nth 1 highlight)))) | |
908 | ((eq override 'prepend) | |
909 | ;; Prepend to existing fontification. | |
910 | (font-lock-prepend-text-property start end 'face | |
911 | (eval (nth 1 highlight)))) | |
912 | ((eq override 'append) | |
913 | ;; Append to existing fontification. | |
914 | (font-lock-append-text-property start end 'face | |
915 | (eval (nth 1 highlight))))))) | |
916 | ||
917 | (defsubst font-lock-fontify-anchored-keywords (keywords limit) | |
918 | "Fontify according to KEYWORDS until LIMIT. | |
919 | KEYWORDS should be of the form MATCH-ANCHORED, see `font-lock-keywords'." | |
920 | (let ((matcher (nth 0 keywords)) (lowdarks (nthcdr 3 keywords)) highlights) | |
876f2438 SM |
921 | ;; Until we come up with a cleaner solution, we make LIMIT the end of line. |
922 | (save-excursion (end-of-line) (setq limit (min limit (point)))) | |
923 | ;; Evaluate PRE-MATCH-FORM. | |
9bfbb130 SM |
924 | (eval (nth 1 keywords)) |
925 | (save-match-data | |
876f2438 | 926 | ;; Find an occurrence of `matcher' before `limit'. |
9bfbb130 SM |
927 | (while (if (stringp matcher) |
928 | (re-search-forward matcher limit t) | |
929 | (funcall matcher limit)) | |
876f2438 | 930 | ;; Apply each highlight to this instance of `matcher'. |
9bfbb130 SM |
931 | (setq highlights lowdarks) |
932 | (while highlights | |
933 | (font-lock-apply-highlight (car highlights)) | |
934 | (setq highlights (cdr highlights))))) | |
876f2438 | 935 | ;; Evaluate POST-MATCH-FORM. |
9bfbb130 SM |
936 | (eval (nth 2 keywords)))) |
937 | ||
938 | (defun font-lock-fontify-keywords-region (start end &optional loudly) | |
939 | "Fontify according to `font-lock-keywords' between START and END. | |
940 | START should be at the beginning of a line." | |
941 | (let ((case-fold-search font-lock-keywords-case-fold-search) | |
942 | (keywords (cdr (if (eq (car-safe font-lock-keywords) t) | |
943 | font-lock-keywords | |
944 | (font-lock-compile-keywords)))) | |
9bfbb130 | 945 | (bufname (buffer-name)) (count 0) |
876f2438 SM |
946 | keyword matcher highlights) |
947 | ;; | |
948 | ;; Fontify each item in `font-lock-keywords' from `start' to `end'. | |
949 | (while keywords | |
950 | (if loudly (message "Fontifying %s... (regexps..%s)" bufname | |
951 | (make-string (setq count (1+ count)) ?.))) | |
9bfbb130 | 952 | ;; |
876f2438 SM |
953 | ;; Find an occurrence of `matcher' from `start' to `end'. |
954 | (setq keyword (car keywords) matcher (car keyword)) | |
955 | (goto-char start) | |
956 | (while (if (stringp matcher) | |
957 | (re-search-forward matcher end t) | |
958 | (funcall matcher end)) | |
959 | ;; Apply each highlight to this instance of `matcher', which may be | |
960 | ;; specific highlights or more keywords anchored to `matcher'. | |
961 | (setq highlights (cdr keyword)) | |
962 | (while highlights | |
963 | (if (numberp (car (car highlights))) | |
964 | (font-lock-apply-highlight (car highlights)) | |
965 | (font-lock-fontify-anchored-keywords (car highlights) end)) | |
966 | (setq highlights (cdr highlights)))) | |
967 | (setq keywords (cdr keywords))))) | |
9bfbb130 SM |
968 | \f |
969 | ;; Various functions. | |
970 | ||
971 | ;; Turn off other related packages if they're on. I prefer a hook. --sm. | |
972 | ;; These explicit calls are easier to understand | |
973 | ;; because people know what they will do. | |
974 | ;; A hook is a mystery because it might do anything whatever. --rms. | |
975 | (defun font-lock-thing-lock-cleanup () | |
976 | (cond ((and (boundp 'fast-lock-mode) fast-lock-mode) | |
977 | (fast-lock-mode -1)) | |
978 | ((and (boundp 'lazy-lock-mode) lazy-lock-mode) | |
979 | (lazy-lock-mode -1)))) | |
980 | ||
271c888a | 981 | ;; Do something special for these packages after fontifying; I prefer a hook. |
9bfbb130 SM |
982 | (defun font-lock-after-fontify-buffer () |
983 | (cond ((and (boundp 'fast-lock-mode) fast-lock-mode) | |
984 | (fast-lock-after-fontify-buffer)) | |
985 | ((and (boundp 'lazy-lock-mode) lazy-lock-mode) | |
986 | (lazy-lock-after-fontify-buffer)))) | |
987 | ||
271c888a SM |
988 | ;; Do something special for these packages after unfontifying; I prefer a hook. |
989 | (defun font-lock-after-unfontify-buffer () | |
990 | (cond ((and (boundp 'fast-lock-mode) fast-lock-mode) | |
991 | (fast-lock-after-unfontify-buffer)) | |
992 | ((and (boundp 'lazy-lock-mode) lazy-lock-mode) | |
993 | (lazy-lock-after-unfontify-buffer)))) | |
994 | ||
9bfbb130 SM |
995 | ;; If the buffer is about to be reverted, it won't be fontified afterward. |
996 | (defun font-lock-revert-setup () | |
997 | (setq font-lock-fontified nil)) | |
998 | ||
999 | ;; If the buffer has just been reverted, normally that turns off | |
1000 | ;; Font Lock mode. So turn the mode back on if necessary. | |
7d7d915a SM |
1001 | (defalias 'font-lock-revert-cleanup |
1002 | 'turn-on-font-lock) | |
9bfbb130 SM |
1003 | |
1004 | (defun font-lock-compile-keywords (&optional keywords) | |
1005 | ;; Compile `font-lock-keywords' into the form (t KEYWORD ...) where KEYWORD | |
1006 | ;; is the (MATCHER HIGHLIGHT ...) shown in the variable's doc string. | |
1007 | (let ((keywords (or keywords font-lock-keywords))) | |
1008 | (setq font-lock-keywords | |
a2b8e66b SM |
1009 | (if (eq (car-safe keywords) t) |
1010 | keywords | |
1011 | (cons t (mapcar 'font-lock-compile-keyword keywords)))))) | |
1012 | ||
1013 | (defun font-lock-compile-keyword (keyword) | |
1014 | (cond ((nlistp keyword) ; Just MATCHER | |
1015 | (list keyword '(0 font-lock-keyword-face))) | |
1016 | ((eq (car keyword) 'eval) ; Specified (eval . FORM) | |
1017 | (font-lock-compile-keyword (eval (cdr keyword)))) | |
1018 | ((numberp (cdr keyword)) ; Specified (MATCHER . MATCH) | |
1019 | (list (car keyword) (list (cdr keyword) 'font-lock-keyword-face))) | |
1020 | ((symbolp (cdr keyword)) ; Specified (MATCHER . FACENAME) | |
1021 | (list (car keyword) (list 0 (cdr keyword)))) | |
1022 | ((nlistp (nth 1 keyword)) ; Specified (MATCHER . HIGHLIGHT) | |
1023 | (list (car keyword) (cdr keyword))) | |
1024 | (t ; Hopefully (MATCHER HIGHLIGHT ...) | |
1025 | keyword))) | |
d46c21ec SM |
1026 | |
1027 | (defun font-lock-choose-keywords (keywords level) | |
1028 | ;; Return LEVELth element of KEYWORDS. A LEVEL of nil is equal to a | |
1029 | ;; LEVEL of 0, a LEVEL of t is equal to (1- (length KEYWORDS)). | |
9bfbb130 SM |
1030 | (let ((level (if (not (consp level)) |
1031 | level | |
1032 | (cdr (or (assq major-mode level) (assq t level)))))) | |
1033 | (cond ((symbolp keywords) | |
1034 | keywords) | |
1035 | ((numberp level) | |
1036 | (or (nth level keywords) (car (reverse keywords)))) | |
1037 | ((eq level t) | |
1038 | (car (reverse keywords))) | |
1039 | (t | |
1040 | (car keywords))))) | |
d46c21ec SM |
1041 | |
1042 | (defun font-lock-set-defaults () | |
1043 | "Set fontification defaults appropriately for this mode. | |
a2b8e66b SM |
1044 | Sets various variables using `font-lock-defaults' (or, if nil, using |
1045 | `font-lock-defaults-alist') and `font-lock-maximum-decoration'." | |
d46c21ec SM |
1046 | ;; Set face defaults. |
1047 | (font-lock-make-faces) | |
1048 | ;; Set fontification defaults. | |
a2b8e66b SM |
1049 | (make-local-variable 'font-lock-fontified) |
1050 | (if font-lock-keywords | |
1051 | nil | |
1052 | (let* ((defaults (or font-lock-defaults | |
1053 | (cdr (assq major-mode font-lock-defaults-alist)))) | |
1054 | (keywords (font-lock-choose-keywords | |
1055 | (nth 0 defaults) font-lock-maximum-decoration))) | |
1056 | ;; Regexp fontification? | |
1057 | (setq font-lock-keywords (if (fboundp keywords) | |
1058 | (funcall keywords) | |
1059 | (eval keywords))) | |
1060 | ;; Syntactic fontification? | |
1061 | (if (nth 1 defaults) | |
1062 | (set (make-local-variable 'font-lock-keywords-only) t)) | |
1063 | ;; Case fold during regexp fontification? | |
1064 | (if (nth 2 defaults) | |
1065 | (set (make-local-variable 'font-lock-keywords-case-fold-search) t)) | |
1066 | ;; Syntax table for regexp and syntactic fontification? | |
1067 | (if (nth 3 defaults) | |
1068 | (let ((slist (nth 3 defaults))) | |
1069 | (set (make-local-variable 'font-lock-syntax-table) | |
1070 | (copy-syntax-table (syntax-table))) | |
1071 | (while slist | |
1072 | (modify-syntax-entry (car (car slist)) (cdr (car slist)) | |
1073 | font-lock-syntax-table) | |
1074 | (setq slist (cdr slist))))) | |
1075 | ;; Syntax function for syntactic fontification? | |
1076 | (if (nth 4 defaults) | |
1077 | (set (make-local-variable 'font-lock-beginning-of-syntax-function) | |
1078 | (nth 4 defaults))) | |
a078558d SM |
1079 | ;; Variable alist? |
1080 | (let ((alist (nthcdr 5 defaults))) | |
1081 | (while alist | |
1082 | (set (make-local-variable (car (car alist))) (cdr (car alist))) | |
1083 | (setq alist (cdr alist))))))) | |
a2b8e66b SM |
1084 | |
1085 | (defun font-lock-unset-defaults () | |
1086 | "Unset fontification defaults. See `font-lock-set-defaults'." | |
1087 | (setq font-lock-keywords nil | |
1088 | font-lock-keywords-only nil | |
1089 | font-lock-keywords-case-fold-search nil | |
1090 | font-lock-syntax-table nil | |
a078558d SM |
1091 | font-lock-beginning-of-syntax-function nil) |
1092 | (let* ((defaults (or font-lock-defaults | |
1093 | (cdr (assq major-mode font-lock-defaults-alist)))) | |
1094 | (alist (nthcdr 5 defaults))) | |
1095 | (while alist | |
1096 | (set (car (car alist)) (default-value (car (car alist)))) | |
1097 | (setq alist (cdr alist))))) | |
030f4a35 | 1098 | \f |
9bfbb130 SM |
1099 | ;; Colour etc. support. |
1100 | ||
a078558d SM |
1101 | ;; This section of code is crying out for revision. |
1102 | ||
1103 | ;; To begin with, `display-type' and `background-mode' are `frame-parameters' | |
1104 | ;; so we don't have to calculate them here anymore. But all the face stuff | |
1105 | ;; should be frame-local (and thus display-local) anyway. Because we're not | |
1106 | ;; sure what support Emacs is going to have for general frame-local face | |
1107 | ;; attributes, we leave this section of code as it is. For now. --sm. | |
1108 | ||
9bfbb130 SM |
1109 | (defvar font-lock-display-type nil |
1110 | "A symbol indicating the display Emacs is running under. | |
1111 | The symbol should be one of `color', `grayscale' or `mono'. | |
1112 | If Emacs guesses this display attribute wrongly, either set this variable in | |
1113 | your `~/.emacs' or set the resource `Emacs.displayType' in your `~/.Xdefaults'. | |
1114 | See also `font-lock-background-mode' and `font-lock-face-attributes'.") | |
1115 | ||
1116 | (defvar font-lock-background-mode nil | |
1117 | "A symbol indicating the Emacs background brightness. | |
1118 | The symbol should be one of `light' or `dark'. | |
1119 | If Emacs guesses this frame attribute wrongly, either set this variable in | |
1120 | your `~/.emacs' or set the resource `Emacs.backgroundMode' in your | |
1121 | `~/.Xdefaults'. | |
1122 | See also `font-lock-display-type' and `font-lock-face-attributes'.") | |
1123 | ||
1124 | (defvar font-lock-face-attributes nil | |
1125 | "A list of default attributes to use for face attributes. | |
1126 | Each element of the list should be of the form | |
1127 | ||
1128 | (FACE FOREGROUND BACKGROUND BOLD-P ITALIC-P UNDERLINE-P) | |
1129 | ||
1130 | where FACE should be one of the face symbols `font-lock-comment-face', | |
1131 | `font-lock-string-face', `font-lock-keyword-face', `font-lock-type-face', | |
1132 | `font-lock-function-name-face', `font-lock-variable-name-face', and | |
1133 | `font-lock-reference-face'. A form for each of these face symbols should be | |
1134 | provided in the list, but other face symbols and attributes may be given and | |
1135 | used in highlighting. See `font-lock-keywords'. | |
1136 | ||
1137 | Subsequent element items should be the attributes for the corresponding | |
1138 | Font Lock mode faces. Attributes FOREGROUND and BACKGROUND should be strings | |
1139 | \(default if nil), while BOLD-P, ITALIC-P, and UNDERLINE-P should specify the | |
1140 | corresponding face attributes (yes if non-nil). | |
1141 | ||
1142 | Emacs uses default attributes based on display type and background brightness. | |
1143 | See variables `font-lock-display-type' and `font-lock-background-mode'. | |
1144 | ||
1145 | Resources can be used to over-ride these face attributes. For example, the | |
1146 | resource `Emacs.font-lock-comment-face.attributeUnderline' can be used to | |
1147 | specify the UNDERLINE-P attribute for face `font-lock-comment-face'.") | |
1148 | ||
1149 | (defun font-lock-make-faces (&optional override) | |
1150 | "Make faces from `font-lock-face-attributes'. | |
1151 | A default list is used if this is nil. | |
1152 | If optional OVERRIDE is non-nil, faces that already exist are reset. | |
1153 | See `font-lock-make-face' and `list-faces-display'." | |
1154 | ;; We don't need to `setq' any of these variables, but the user can see what | |
1155 | ;; is being used if we do. | |
1156 | (if (null font-lock-display-type) | |
1157 | (setq font-lock-display-type | |
1158 | (let ((display-resource (x-get-resource ".displayType" | |
1159 | "DisplayType"))) | |
1160 | (cond (display-resource (intern (downcase display-resource))) | |
1161 | ((x-display-color-p) 'color) | |
1162 | ((x-display-grayscale-p) 'grayscale) | |
1163 | (t 'mono))))) | |
1164 | (if (null font-lock-background-mode) | |
1165 | (setq font-lock-background-mode | |
1166 | (let ((bg-resource (x-get-resource ".backgroundMode" | |
1167 | "BackgroundMode")) | |
1168 | (params (frame-parameters))) | |
1169 | (cond (bg-resource (intern (downcase bg-resource))) | |
03a84c34 RS |
1170 | ((eq system-type 'ms-dos) |
1171 | (if (string-match "light" | |
1172 | (cdr (assq 'background-color params))) | |
1173 | 'light | |
1174 | 'dark)) | |
9bfbb130 SM |
1175 | ((< (apply '+ (x-color-values |
1176 | (cdr (assq 'background-color params)))) | |
1177 | (/ (apply '+ (x-color-values "white")) 3)) | |
1178 | 'dark) | |
1179 | (t 'light))))) | |
1180 | (if (null font-lock-face-attributes) | |
1181 | (setq font-lock-face-attributes | |
1182 | (let ((light-bg (eq font-lock-background-mode 'light))) | |
1183 | (cond ((memq font-lock-display-type '(mono monochrome)) | |
1184 | ;; Emacs 19.25's font-lock defaults: | |
1185 | ;;'((font-lock-comment-face nil nil nil t nil) | |
1186 | ;; (font-lock-string-face nil nil nil nil t) | |
1187 | ;; (font-lock-keyword-face nil nil t nil nil) | |
1188 | ;; (font-lock-function-name-face nil nil t t nil) | |
1189 | ;; (font-lock-type-face nil nil nil t nil)) | |
1190 | (list '(font-lock-comment-face nil nil t t nil) | |
1191 | '(font-lock-string-face nil nil nil t nil) | |
1192 | '(font-lock-keyword-face nil nil t nil nil) | |
1193 | (list | |
1194 | 'font-lock-function-name-face | |
1195 | (cdr (assq 'background-color (frame-parameters))) | |
1196 | (cdr (assq 'foreground-color (frame-parameters))) | |
1197 | t nil nil) | |
1198 | '(font-lock-variable-name-face nil nil t t nil) | |
1199 | '(font-lock-type-face nil nil t nil t) | |
1200 | '(font-lock-reference-face nil nil t nil t))) | |
1201 | ((memq font-lock-display-type '(grayscale greyscale | |
1202 | grayshade greyshade)) | |
1203 | (list | |
1204 | (list 'font-lock-comment-face | |
1205 | nil (if light-bg "Gray80" "DimGray") t t nil) | |
1206 | (list 'font-lock-string-face | |
1207 | nil (if light-bg "Gray50" "LightGray") nil t nil) | |
1208 | (list 'font-lock-keyword-face | |
1209 | nil (if light-bg "Gray90" "DimGray") t nil nil) | |
1210 | (list 'font-lock-function-name-face | |
1211 | (cdr (assq 'background-color (frame-parameters))) | |
1212 | (cdr (assq 'foreground-color (frame-parameters))) | |
1213 | t nil nil) | |
1214 | (list 'font-lock-variable-name-face | |
1215 | nil (if light-bg "Gray90" "DimGray") t t nil) | |
1216 | (list 'font-lock-type-face | |
1217 | nil (if light-bg "Gray80" "DimGray") t nil t) | |
1218 | (list 'font-lock-reference-face | |
1219 | nil (if light-bg "LightGray" "Gray50") t nil t))) | |
1220 | (light-bg ; light colour background | |
1221 | '((font-lock-comment-face "Firebrick") | |
1222 | (font-lock-string-face "RosyBrown") | |
1223 | (font-lock-keyword-face "Purple") | |
1224 | (font-lock-function-name-face "Blue") | |
1225 | (font-lock-variable-name-face "DarkGoldenrod") | |
1226 | (font-lock-type-face "DarkOliveGreen") | |
1227 | (font-lock-reference-face "CadetBlue"))) | |
1228 | (t ; dark colour background | |
1229 | '((font-lock-comment-face "OrangeRed") | |
1230 | (font-lock-string-face "LightSalmon") | |
1231 | (font-lock-keyword-face "LightSteelBlue") | |
1232 | (font-lock-function-name-face "LightSkyBlue") | |
1233 | (font-lock-variable-name-face "LightGoldenrod") | |
1234 | (font-lock-type-face "PaleGreen") | |
1235 | (font-lock-reference-face "Aquamarine"))))))) | |
1236 | ;; Now make the faces if we have to. | |
1237 | (mapcar (function | |
1238 | (lambda (face-attributes) | |
1239 | (let ((face (nth 0 face-attributes))) | |
1240 | (cond (override | |
1241 | ;; We can stomp all over it anyway. Get outta my face! | |
1242 | (font-lock-make-face face-attributes)) | |
1243 | ((and (boundp face) (facep (symbol-value face))) | |
1244 | ;; The variable exists and is already bound to a face. | |
1245 | nil) | |
1246 | ((facep face) | |
1247 | ;; We already have a face so we bind the variable to it. | |
1248 | (set face face)) | |
1249 | (t | |
1250 | ;; No variable or no face. | |
1251 | (font-lock-make-face face-attributes)))))) | |
1252 | font-lock-face-attributes)) | |
1253 | ||
1254 | (defun font-lock-make-face (face-attributes) | |
1255 | "Make a face from FACE-ATTRIBUTES. | |
1256 | FACE-ATTRIBUTES should be like an element `font-lock-face-attributes', so that | |
1257 | the face name is the first item in the list. A variable with the same name as | |
1258 | the face is also set; its value is the face name." | |
1259 | (let* ((face (nth 0 face-attributes)) | |
1260 | (face-name (symbol-name face)) | |
1261 | (set-p (function (lambda (face-name resource) | |
1262 | (x-get-resource (concat face-name ".attribute" resource) | |
1263 | (concat "Face.Attribute" resource))))) | |
1264 | (on-p (function (lambda (face-name resource) | |
1265 | (let ((set (funcall set-p face-name resource))) | |
1266 | (and set (member (downcase set) '("on" "true")))))))) | |
1267 | (make-face face) | |
876f2438 | 1268 | (add-to-list 'facemenu-unlisted-faces face) |
9bfbb130 SM |
1269 | ;; Set attributes not set from X resources (and therefore `make-face'). |
1270 | (or (funcall set-p face-name "Foreground") | |
1271 | (condition-case nil | |
1272 | (set-face-foreground face (nth 1 face-attributes)) | |
1273 | (error nil))) | |
1274 | (or (funcall set-p face-name "Background") | |
1275 | (condition-case nil | |
1276 | (set-face-background face (nth 2 face-attributes)) | |
1277 | (error nil))) | |
1278 | (if (funcall set-p face-name "Bold") | |
1279 | (and (funcall on-p face-name "Bold") (make-face-bold face nil t)) | |
1280 | (and (nth 3 face-attributes) (make-face-bold face nil t))) | |
1281 | (if (funcall set-p face-name "Italic") | |
1282 | (and (funcall on-p face-name "Italic") (make-face-italic face nil t)) | |
1283 | (and (nth 4 face-attributes) (make-face-italic face nil t))) | |
1284 | (or (funcall set-p face-name "Underline") | |
1285 | (set-face-underline-p face (nth 5 face-attributes))) | |
1286 | (set face face))) | |
1287 | \f | |
1288 | ;;; Various regexp information shared by several modes. | |
a1eb1cf1 | 1289 | ;;; Information specific to a single mode should go in its load library. |
030f4a35 | 1290 | |
030f4a35 | 1291 | (defconst lisp-font-lock-keywords-1 |
a1eb1cf1 | 1292 | (list |
9bfbb130 | 1293 | ;; Anything not a variable or type declaration is fontified as a function. |
d46c21ec SM |
1294 | ;; It would be cleaner to allow preceding whitespace, but it would also be |
1295 | ;; about five times slower. | |
1296 | (list (concat "^(\\(def\\(" | |
1297 | ;; Variable declarations. | |
1298 | "\\(const\\(\\|ant\\)\\|ine-key\\(\\|-after\\)\\|var\\)\\|" | |
1299 | ;; Structure declarations. | |
1300 | "\\(class\\|struct\\|type\\)\\|" | |
1301 | ;; Everything else is a function declaration. | |
1302 | "\\([^ \t\n\(\)]+\\)" | |
1303 | "\\)\\)\\>" | |
1304 | ;; Any whitespace and declared object. | |
1305 | "[ \t'\(]*" | |
7d7d915a | 1306 | "\\(\\sw+\\)?") |
d46c21ec SM |
1307 | '(1 font-lock-keyword-face) |
1308 | '(8 (cond ((match-beginning 3) font-lock-variable-name-face) | |
1309 | ((match-beginning 6) font-lock-type-face) | |
1310 | (t font-lock-function-name-face)) | |
9bfbb130 SM |
1311 | nil t)) |
1312 | ) | |
7d7d915a | 1313 | "Subdued level highlighting for Lisp modes.") |
030f4a35 RS |
1314 | |
1315 | (defconst lisp-font-lock-keywords-2 | |
799761f0 | 1316 | (append lisp-font-lock-keywords-1 |
9bfbb130 SM |
1317 | (list |
1318 | ;; | |
1319 | ;; Control structures. ELisp and CLisp combined. | |
d46c21ec | 1320 | ; (make-regexp |
7d7d915a | 1321 | ; '("cond" "if" "while" "let\\*?" "prog[nv12*]?" "inline" "catch" "throw" |
d46c21ec SM |
1322 | ; "save-restriction" "save-excursion" "save-window-excursion" |
1323 | ; "save-selected-window" "save-match-data" "unwind-protect" | |
1324 | ; "condition-case" "track-mouse" | |
1325 | ; "eval-after-load" "eval-and-compile" "eval-when-compile" | |
a078558d SM |
1326 | ; "when" "unless" "do" "flet" "labels" "return" "return-from" |
1327 | ; "with-output-to-temp-buffer" "with-timeout")) | |
9bfbb130 SM |
1328 | (cons |
1329 | (concat | |
1330 | "(\\(" | |
a078558d | 1331 | "c\\(atch\\|ond\\(\\|ition-case\\)\\)\\|do\\|" |
9bfbb130 | 1332 | "eval-\\(a\\(fter-load\\|nd-compile\\)\\|when-compile\\)\\|flet\\|" |
7d7d915a | 1333 | "i\\(f\\|nline\\)\\|l\\(abels\\|et\\*?\\)\\|prog[nv12*]?\\|" |
a078558d SM |
1334 | "return\\(\\|-from\\)\\|save-\\(excursion\\|match-data\\|restriction\\|" |
1335 | "selected-window\\|window-excursion\\)\\|t\\(hrow\\|rack-mouse\\)\\|" | |
1336 | "un\\(less\\|wind-protect\\)\\|" | |
1337 | "w\\(h\\(en\\|ile\\)\\|ith-\\(output-to-temp-buffer\\|timeout\\)\\)" | |
9bfbb130 SM |
1338 | "\\)\\>") 1) |
1339 | ;; | |
7d7d915a SM |
1340 | ;; Feature symbols as references. |
1341 | '("(\\(featurep\\|provide\\|require\\)\\>[ \t']*\\(\\sw+\\)?" | |
1342 | (1 font-lock-keyword-face) (2 font-lock-reference-face nil t)) | |
1343 | ;; | |
9bfbb130 SM |
1344 | ;; Words inside \\[] tend to be for `substitute-command-keys'. |
1345 | '("\\\\\\\\\\[\\(\\sw+\\)]" 1 font-lock-reference-face prepend) | |
1346 | ;; | |
1347 | ;; Words inside `' tend to be symbol names. | |
1348 | '("`\\(\\sw\\sw+\\)'" 1 font-lock-reference-face prepend) | |
1349 | ;; | |
1350 | ;; CLisp `:' keywords as references. | |
1351 | '("\\<:\\sw+\\>" 0 font-lock-reference-face prepend) | |
1352 | ;; | |
1353 | ;; ELisp and CLisp `&' keywords as types. | |
1354 | '("\\<\\&\\(optional\\|rest\\|whole\\)\\>" . font-lock-type-face) | |
1355 | )) | |
fb512de9 | 1356 | "Gaudy level highlighting for Lisp modes.") |
030f4a35 | 1357 | |
fb512de9 SM |
1358 | (defvar lisp-font-lock-keywords lisp-font-lock-keywords-1 |
1359 | "Default expressions to highlight in Lisp modes.") | |
030f4a35 RS |
1360 | |
1361 | ||
d46c21ec | 1362 | (defvar scheme-font-lock-keywords |
9bfbb130 SM |
1363 | (eval-when-compile |
1364 | (list | |
1365 | ;; | |
1366 | ;; Declarations. Hannes Haug <hannes.haug@student.uni-tuebingen.de> says | |
1367 | ;; this works for SOS, STklos, SCOOPS, Meroon and Tiny CLOS. | |
1368 | (list (concat "(\\(define\\(" | |
1369 | ;; Function names. | |
1370 | "\\(\\|-\\(generic\\(\\|-procedure\\)\\|method\\)\\)\\|" | |
1371 | ;; Macro names, as variable names. A bit dubious, this. | |
1372 | "\\(-syntax\\)\\|" | |
1373 | ;; Class names. | |
1374 | "\\(-class\\)" | |
1375 | "\\)\\)\\>" | |
1376 | ;; Any whitespace and declared object. | |
1377 | "[ \t]*(?" | |
1378 | "\\(\\sw+\\)?") | |
1379 | '(1 font-lock-keyword-face) | |
1380 | '(8 (cond ((match-beginning 3) font-lock-function-name-face) | |
1381 | ((match-beginning 6) font-lock-variable-name-face) | |
1382 | (t font-lock-type-face)) | |
1383 | nil t)) | |
1384 | ;; | |
1385 | ;; Control structures. | |
d46c21ec SM |
1386 | ;(make-regexp '("begin" "call-with-current-continuation" "call/cc" |
1387 | ; "call-with-input-file" "call-with-output-file" "case" "cond" | |
9bfbb130 SM |
1388 | ; "do" "else" "for-each" "if" "lambda" |
1389 | ; "let\\*?" "let-syntax" "letrec" "letrec-syntax" | |
1390 | ; ;; Hannes Haug <hannes.haug@student.uni-tuebingen.de> wants: | |
1391 | ; "and" "or" "delay" | |
1392 | ; ;; Stefan Monnier <stefan.monnier@epfl.ch> says don't bother: | |
d46c21ec SM |
1393 | ; ;;"quasiquote" "quote" "unquote" "unquote-splicing" |
1394 | ; "map" "syntax" "syntax-rules")) | |
9bfbb130 SM |
1395 | (cons |
1396 | (concat "(\\(" | |
1397 | "and\\|begin\\|c\\(a\\(ll\\(-with-\\(current-continuation\\|" | |
1398 | "input-file\\|output-file\\)\\|/cc\\)\\|se\\)\\|ond\\)\\|" | |
1399 | "d\\(elay\\|o\\)\\|else\\|for-each\\|if\\|" | |
1400 | "l\\(ambda\\|et\\(-syntax\\|\\*?\\|rec\\(\\|-syntax\\)\\)\\)\\|" | |
1401 | "map\\|or\\|syntax\\(\\|-rules\\)" | |
1402 | "\\)\\>") 1) | |
1403 | ;; | |
1404 | ;; David Fox <fox@graphics.cs.nyu.edu> for SOS/STklos class specifiers. | |
1405 | '("\\<<\\sw+>\\>" . font-lock-type-face) | |
1406 | ;; | |
1407 | ;; Scheme `:' keywords as references. | |
1408 | '("\\<:\\sw+\\>" . font-lock-reference-face) | |
1409 | )) | |
1410 | "Default expressions to highlight in Scheme modes.") | |
d46c21ec SM |
1411 | |
1412 | ||
030f4a35 | 1413 | (defconst c-font-lock-keywords-1 nil |
fb512de9 | 1414 | "Subdued level highlighting for C modes.") |
030f4a35 RS |
1415 | |
1416 | (defconst c-font-lock-keywords-2 nil | |
9bfbb130 SM |
1417 | "Medium level highlighting for C modes.") |
1418 | ||
1419 | (defconst c-font-lock-keywords-3 nil | |
fb512de9 | 1420 | "Gaudy level highlighting for C modes.") |
030f4a35 | 1421 | |
1bd50840 | 1422 | (defconst c++-font-lock-keywords-1 nil |
fb512de9 | 1423 | "Subdued level highlighting for C++ modes.") |
1bd50840 RS |
1424 | |
1425 | (defconst c++-font-lock-keywords-2 nil | |
9bfbb130 SM |
1426 | "Medium level highlighting for C++ modes.") |
1427 | ||
1428 | (defconst c++-font-lock-keywords-3 nil | |
fb512de9 | 1429 | "Gaudy level highlighting for C++ modes.") |
1bd50840 | 1430 | |
9bfbb130 SM |
1431 | (defun font-lock-match-c++-style-declaration-item-and-skip-to-next (limit) |
1432 | ;; Match, and move over, any declaration/definition item after point. | |
1433 | ;; The expect syntax of an item is "word" or "word::word", possibly ending | |
1434 | ;; with optional whitespace and a "(". Everything following the item (but | |
1435 | ;; belonging to it) is expected to by skip-able by `forward-sexp', and items | |
1436 | ;; are expected to be separated with a "," or ";". | |
1437 | (if (looking-at "[ \t*&]*\\(\\sw+\\)\\(::\\(\\sw+\\)\\)?[ \t]*\\((\\)?") | |
1438 | (save-match-data | |
1439 | (condition-case nil | |
1440 | (save-restriction | |
876f2438 SM |
1441 | ;; Restrict to the end of line, currently guaranteed to be LIMIT. |
1442 | (narrow-to-region (point-min) limit) | |
9bfbb130 SM |
1443 | (goto-char (match-end 1)) |
1444 | ;; Move over any item value, etc., to the next item. | |
1445 | (while (not (looking-at "[ \t]*\\([,;]\\|$\\)")) | |
1446 | (goto-char (or (scan-sexps (point) 1) (point-max)))) | |
1447 | (goto-char (match-end 0))) | |
1448 | (error t))))) | |
1449 | ||
b89e1134 SM |
1450 | (let ((c-keywords |
1451 | ; ("break" "continue" "do" "else" "for" "if" "return" "switch" "while") | |
1452 | "break\\|continue\\|do\\|else\\|for\\|if\\|return\\|switch\\|while") | |
1453 | (c-type-types | |
a1eb1cf1 RS |
1454 | ; ("auto" "extern" "register" "static" "typedef" "struct" "union" "enum" |
1455 | ; "signed" "unsigned" "short" "long" "int" "char" "float" "double" | |
b89e1134 SM |
1456 | ; "void" "volatile" "const") |
1457 | (concat "auto\\|c\\(har\\|onst\\)\\|double\\|e\\(num\\|xtern\\)\\|" | |
1458 | "float\\|int\\|long\\|register\\|" | |
1459 | "s\\(hort\\|igned\\|t\\(atic\\|ruct\\)\\)\\|typedef\\|" | |
1460 | "un\\(ion\\|signed\\)\\|vo\\(id\\|latile\\)")) ; 6 ()s deep. | |
1461 | (c++-keywords | |
1462 | ; ("break" "continue" "do" "else" "for" "if" "return" "switch" "while" | |
1463 | ; "asm" "catch" "delete" "new" "operator" "sizeof" "this" "throw" "try" | |
1464 | ; "protected" "private" "public") | |
1465 | (concat "asm\\|break\\|c\\(atch\\|ontinue\\)\\|d\\(elete\\|o\\)\\|" | |
9bfbb130 | 1466 | "else\\|for\\|if\\|new\\|" |
b89e1134 SM |
1467 | "p\\(r\\(ivate\\|otected\\)\\|ublic\\)\\|return\\|" |
1468 | "s\\(izeof\\|witch\\)\\|t\\(h\\(is\\|row\\)\\|ry\\)\\|while")) | |
1469 | (c++-type-types | |
1470 | ; ("auto" "extern" "register" "static" "typedef" "struct" "union" "enum" | |
1471 | ; "signed" "unsigned" "short" "long" "int" "char" "float" "double" | |
1472 | ; "void" "volatile" "const" "class" "inline" "friend" "bool" | |
1473 | ; "virtual" "complex" "template") | |
1474 | (concat "auto\\|bool\\|c\\(har\\|lass\\|o\\(mplex\\|nst\\)\\)\\|" | |
1475 | "double\\|e\\(num\\|xtern\\)\\|f\\(loat\\|riend\\)\\|" | |
1476 | "in\\(line\\|t\\)\\|long\\|register\\|" | |
1477 | "s\\(hort\\|igned\\|t\\(atic\\|ruct\\)\\)\\|" | |
1478 | "t\\(emplate\\|ypedef\\)\\|un\\(ion\\|signed\\)\\|" | |
1479 | "v\\(irtual\\|o\\(id\\|latile\\)\\)")) ; 11 ()s deep. | |
9bfbb130 | 1480 | ) |
f60f18ae KH |
1481 | (setq c-font-lock-keywords-1 |
1482 | (list | |
f60f18ae | 1483 | ;; |
9bfbb130 SM |
1484 | ;; These are all anchored at the beginning of line for speed. |
1485 | ;; | |
1486 | ;; Fontify function name definitions (GNU style; without type on line). | |
1487 | (list (concat "^\\(\\sw+\\)[ \t]*(") 1 'font-lock-function-name-face) | |
1488 | ;; | |
1489 | ;; Fontify filenames in #include <...> preprocessor directives as strings. | |
f60f18ae KH |
1490 | '("^#[ \t]*include[ \t]+\\(<[^>\"\n]+>\\)" 1 font-lock-string-face) |
1491 | ;; | |
a1eb1cf1 | 1492 | ;; Fontify function macro names. |
7d7d915a | 1493 | '("^#[ \t]*define[ \t]+\\(\\sw+\\)(" 1 font-lock-function-name-face) |
f60f18ae | 1494 | ;; |
9bfbb130 SM |
1495 | ;; Fontify symbol names in #if ... defined preprocessor directives. |
1496 | '("^#[ \t]*if\\>" | |
1497 | ("\\<\\(defined\\)\\>[ \t]*(?\\(\\sw+\\)?" nil nil | |
1498 | (1 font-lock-reference-face) (2 font-lock-variable-name-face nil t))) | |
1499 | ;; | |
a1eb1cf1 | 1500 | ;; Fontify otherwise as symbol names, and the preprocessor directive names. |
7d7d915a | 1501 | '("^#[ \t]*\\(\\sw+\\)\\>[ \t]*\\(\\sw+\\)?" |
a1eb1cf1 | 1502 | (1 font-lock-reference-face) (2 font-lock-variable-name-face nil t)) |
f60f18ae KH |
1503 | )) |
1504 | ||
1505 | (setq c-font-lock-keywords-2 | |
1506 | (append c-font-lock-keywords-1 | |
030f4a35 | 1507 | (list |
030f4a35 | 1508 | ;; |
9bfbb130 | 1509 | ;; Simple regexps for speed. |
b89e1134 | 1510 | ;; |
9bfbb130 SM |
1511 | ;; Fontify all type specifiers. |
1512 | (cons (concat "\\<\\(" c-type-types "\\)\\>") 'font-lock-type-face) | |
030f4a35 | 1513 | ;; |
b89e1134 | 1514 | ;; Fontify all builtin keywords (except case, default and goto; see below). |
9bfbb130 | 1515 | (cons (concat "\\<\\(" c-keywords "\\)\\>") 'font-lock-keyword-face) |
030f4a35 | 1516 | ;; |
9bfbb130 | 1517 | ;; Fontify case/goto keywords and targets, and case default/goto tags. |
7d7d915a | 1518 | '("\\<\\(case\\|goto\\)\\>[ \t]*\\(\\sw+\\)?" |
a1eb1cf1 RS |
1519 | (1 font-lock-keyword-face) (2 font-lock-reference-face nil t)) |
1520 | '("^[ \t]*\\(\\sw+\\)[ \t]*:" 1 font-lock-reference-face) | |
f60f18ae | 1521 | ))) |
1bd50840 | 1522 | |
9bfbb130 SM |
1523 | (setq c-font-lock-keywords-3 |
1524 | (append c-font-lock-keywords-2 | |
1525 | ;; | |
1526 | ;; More complicated regexps for more complete highlighting for types. | |
1527 | ;; We still have to fontify type specifiers individually, as C is so hairy. | |
1528 | (list | |
1529 | ;; | |
1530 | ;; Fontify all storage classes and type specifiers, plus their items. | |
1531 | (list (concat "\\<\\(" c-type-types "\\)\\>" | |
1532 | "\\([ \t*&]+\\sw+\\>\\)*") | |
1533 | ;; Fontify each declaration item. | |
1534 | '(font-lock-match-c++-style-declaration-item-and-skip-to-next | |
1535 | ;; Start with point after all type specifiers. | |
1536 | (goto-char (or (match-beginning 8) (match-end 1))) | |
1537 | ;; Finish with point after first type specifier. | |
1538 | (goto-char (match-end 1)) | |
1539 | ;; Fontify as a variable or function name. | |
1540 | (1 (if (match-beginning 4) | |
1541 | font-lock-function-name-face | |
1542 | font-lock-variable-name-face)))) | |
1543 | ;; | |
1544 | ;; Fontify structures, or typedef names, plus their items. | |
1545 | '("\\(}\\)[ \t*]*\\sw" | |
1546 | (font-lock-match-c++-style-declaration-item-and-skip-to-next | |
1547 | (goto-char (match-end 1)) nil | |
1548 | (1 (if (match-beginning 4) | |
1549 | font-lock-function-name-face | |
1550 | font-lock-variable-name-face)))) | |
1551 | ;; | |
1552 | ;; Fontify anything at beginning of line as a declaration or definition. | |
1553 | '("^\\(\\sw+\\)\\>\\([ \t*]+\\sw+\\>\\)*" | |
1554 | (1 font-lock-type-face) | |
1555 | (font-lock-match-c++-style-declaration-item-and-skip-to-next | |
1556 | (goto-char (or (match-beginning 2) (match-end 1))) nil | |
1557 | (1 (if (match-beginning 4) | |
1558 | font-lock-function-name-face | |
1559 | font-lock-variable-name-face)))) | |
1560 | ))) | |
1561 | ||
1562 | (setq c++-font-lock-keywords-1 | |
1563 | (append | |
1564 | ;; | |
1565 | ;; The list `c-font-lock-keywords-1' less that for function names. | |
1566 | (cdr c-font-lock-keywords-1) | |
1567 | ;; | |
1568 | ;; Fontify function name definitions, possibly incorporating class name. | |
1569 | (list | |
1570 | '("^\\(\\sw+\\)\\(::\\(\\sw+\\)\\)?[ \t]*(" | |
1571 | (1 (if (match-beginning 2) | |
1572 | font-lock-type-face | |
1573 | font-lock-function-name-face)) | |
1574 | (3 (if (match-beginning 2) font-lock-function-name-face) nil t)) | |
1575 | ))) | |
1576 | ||
1bd50840 | 1577 | (setq c++-font-lock-keywords-2 |
b89e1134 | 1578 | (append c++-font-lock-keywords-1 |
a1eb1cf1 | 1579 | (list |
9bfbb130 SM |
1580 | ;; |
1581 | ;; The list `c-font-lock-keywords-2' for C++ plus operator overloading. | |
b89e1134 | 1582 | (cons (concat "\\<\\(" c++-type-types "\\)\\>") 'font-lock-type-face) |
9bfbb130 SM |
1583 | ;; |
1584 | ;; Fontify operator function name overloading. | |
1585 | '("\\<\\(operator\\)\\>[ \t]*\\([][)(><!=+-][][)(><!=+-]?\\)?" | |
1586 | (1 font-lock-keyword-face) (2 font-lock-function-name-face nil t)) | |
1587 | ;; | |
1588 | ;; Fontify case/goto keywords and targets, and case default/goto tags. | |
7d7d915a | 1589 | '("\\<\\(case\\|goto\\)\\>[ \t]*\\(\\sw+\\)?" |
b89e1134 | 1590 | (1 font-lock-keyword-face) (2 font-lock-reference-face nil t)) |
9bfbb130 SM |
1591 | '("^[ \t]*\\(\\sw+\\)[ \t]*:[^:]" 1 font-lock-reference-face) |
1592 | ;; | |
1593 | ;; Fontify other builtin keywords. | |
1594 | (cons (concat "\\<\\(" c++-keywords "\\)\\>") 'font-lock-keyword-face) | |
1595 | ))) | |
1596 | ||
1597 | (setq c++-font-lock-keywords-3 | |
1598 | (append c++-font-lock-keywords-2 | |
1599 | ;; | |
1600 | ;; More complicated regexps for more complete highlighting for types. | |
1601 | (list | |
1602 | ;; | |
1603 | ;; Fontify all storage classes and type specifiers, plus their items. | |
1604 | (list (concat "\\<\\(" c++-type-types "\\)\\>" | |
1605 | "\\([ \t*&]+\\sw+\\>\\)*") | |
1606 | ;; Fontify each declaration item. | |
1607 | '(font-lock-match-c++-style-declaration-item-and-skip-to-next | |
1608 | ;; Start with point after all type specifiers. | |
1609 | (goto-char (or (match-beginning 13) (match-end 1))) | |
1610 | ;; Finish with point after first type specifier. | |
1611 | (goto-char (match-end 1)) | |
1612 | ;; Fontify as a variable or function name. | |
1613 | (1 (cond ((match-beginning 2) font-lock-type-face) | |
1614 | ((match-beginning 4) font-lock-function-name-face) | |
1615 | (t font-lock-variable-name-face))) | |
1616 | (3 (if (match-beginning 4) | |
1617 | font-lock-function-name-face | |
1618 | font-lock-variable-name-face) nil t))) | |
1619 | ;; | |
1620 | ;; Fontify structures, or typedef names, plus their items. | |
1621 | '("\\(}\\)[ \t*]*\\sw" | |
1622 | (font-lock-match-c++-style-declaration-item-and-skip-to-next | |
1623 | (goto-char (match-end 1)) nil | |
1624 | (1 (if (match-beginning 4) | |
1625 | font-lock-function-name-face | |
1626 | font-lock-variable-name-face)))) | |
1627 | ;; | |
1628 | ;; Fontify anything at beginning of line as a declaration or definition. | |
1629 | '("^\\(\\sw+\\)\\>\\([ \t*]+\\sw+\\>\\)*" | |
1630 | (1 font-lock-type-face) | |
1631 | (font-lock-match-c++-style-declaration-item-and-skip-to-next | |
1632 | (goto-char (or (match-beginning 2) (match-end 1))) nil | |
1633 | (1 (cond ((match-beginning 2) font-lock-type-face) | |
1634 | ((match-beginning 4) font-lock-function-name-face) | |
1635 | (t font-lock-variable-name-face))) | |
1636 | (3 (if (match-beginning 4) | |
1637 | font-lock-function-name-face | |
1638 | font-lock-variable-name-face) nil t))) | |
1639 | ))) | |
f60f18ae | 1640 | ) |
030f4a35 | 1641 | |
fb512de9 SM |
1642 | (defvar c-font-lock-keywords c-font-lock-keywords-1 |
1643 | "Default expressions to highlight in C mode.") | |
030f4a35 | 1644 | |
fb512de9 SM |
1645 | (defvar c++-font-lock-keywords c++-font-lock-keywords-1 |
1646 | "Default expressions to highlight in C++ mode.") | |
030f4a35 | 1647 | |
d46c21ec | 1648 | |
030f4a35 | 1649 | (defvar tex-font-lock-keywords |
d46c21ec SM |
1650 | ; ;; Regexps updated with help from Ulrik Dickow <dickow@nbi.dk>. |
1651 | ; '(("\\\\\\(begin\\|end\\|newcommand\\){\\([a-zA-Z0-9\\*]+\\)}" | |
1652 | ; 2 font-lock-function-name-face) | |
1653 | ; ("\\\\\\(cite\\|label\\|pageref\\|ref\\){\\([^} \t\n]+\\)}" | |
1654 | ; 2 font-lock-reference-face) | |
1655 | ; ;; It seems a bit dubious to use `bold' and `italic' faces since we might | |
1656 | ; ;; not be able to display those fonts. | |
1657 | ; ("{\\\\bf\\([^}]+\\)}" 1 'bold keep) | |
1658 | ; ("{\\\\\\(em\\|it\\|sl\\)\\([^}]+\\)}" 2 'italic keep) | |
1659 | ; ("\\\\\\([a-zA-Z@]+\\|.\\)" . font-lock-keyword-face) | |
1660 | ; ("^[ \t\n]*\\\\def[\\\\@]\\(\\w+\\)" 1 font-lock-function-name-face keep)) | |
1661 | ;; Rewritten and extended for LaTeX2e by Ulrik Dickow <dickow@nbi.dk>. | |
826b2925 SM |
1662 | '(("\\\\\\(begin\\|end\\|newcommand\\){\\([a-zA-Z0-9\\*]+\\)}" |
1663 | 2 font-lock-function-name-face) | |
1664 | ("\\\\\\(cite\\|label\\|pageref\\|ref\\){\\([^} \t\n]+\\)}" | |
1665 | 2 font-lock-reference-face) | |
d46c21ec | 1666 | ("^[ \t]*\\\\def\\\\\\(\\(\\w\\|@\\)+\\)" 1 font-lock-function-name-face) |
9bfbb130 | 1667 | "\\\\\\([a-zA-Z@]+\\|.\\)" |
826b2925 SM |
1668 | ;; It seems a bit dubious to use `bold' and `italic' faces since we might |
1669 | ;; not be able to display those fonts. | |
d46c21ec SM |
1670 | ;; LaTeX2e: \emph{This is emphasized}. |
1671 | ("\\\\emph{\\([^}]+\\)}" 1 'italic keep) | |
1672 | ;; LaTeX2e: \textbf{This is bold}, \textit{...}, \textsl{...} | |
1673 | ("\\\\text\\(\\(bf\\)\\|it\\|sl\\){\\([^}]+\\)}" | |
1674 | 3 (if (match-beginning 2) 'bold 'italic) keep) | |
1675 | ;; Old-style bf/em/it/sl. Stop at `\\' and un-escaped `&', for good tables. | |
1676 | ("\\\\\\(\\(bf\\)\\|em\\|it\\|sl\\)\\>\\(\\([^}&\\]\\|\\\\[^\\]\\)+\\)" | |
1677 | 3 (if (match-beginning 2) 'bold 'italic) keep)) | |
9bfbb130 | 1678 | "Default expressions to highlight in TeX modes.") |
d46c21ec | 1679 | \f |
a1eb1cf1 RS |
1680 | ;; Install ourselves: |
1681 | ||
a1eb1cf1 RS |
1682 | (or (assq 'font-lock-mode minor-mode-alist) |
1683 | (setq minor-mode-alist (cons '(font-lock-mode " Font") minor-mode-alist))) | |
1684 | ||
1685 | ;; Provide ourselves: | |
8f261d40 | 1686 | |
030f4a35 RS |
1687 | (provide 'font-lock) |
1688 | ||
1689 | ;;; font-lock.el ends here |