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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 | |
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'. | |
9bfbb130 | 52 | |
b89e1134 SM |
53 | ;; If you add patterns for a new mode, say foo.el's `foo-mode', say in which |
54 | ;; you don't want syntactic fontification to occur, you can make Font Lock mode | |
55 | ;; use your regexps when turning on Font Lock by adding to `foo-mode-hook': | |
56 | ;; | |
57 | ;; (add-hook 'foo-mode-hook | |
58 | ;; '(lambda () (make-local-variable 'font-lock-defaults) | |
59 | ;; (setq font-lock-defaults '(foo-font-lock-keywords t)))) | |
60 | ;; | |
a1eb1cf1 RS |
61 | ;; Nasty regexps of the form "bar\\(\\|lo\\)\\|f\\(oo\\|u\\(\\|bar\\)\\)\\|lo" |
62 | ;; are made thusly: (make-regexp '("foo" "fu" "fubar" "bar" "barlo" "lo")) for | |
63 | ;; efficiency. See /pub/gnu/emacs/elisp-archive/functions/make-regexp.el.Z on | |
64 | ;; archive.cis.ohio-state.edu for this and other functions. | |
9bfbb130 SM |
65 | |
66 | ;; What is fontification for? You might say, "It's to make my code look nice." | |
67 | ;; I think it should be for adding information in the form of cues. These cues | |
68 | ;; should provide you with enough information to both (a) distinguish between | |
69 | ;; different items, and (b) identify the item meanings, without having to read | |
70 | ;; the items and think about it. Therefore, fontification allows you to think | |
71 | ;; less about, say, the structure of code, and more about, say, why the code | |
72 | ;; doesn't work. Or maybe it allows you to think less and drift off to sleep. | |
73 | ;; | |
74 | ;; So, here are my opinions/advice/guidelines: | |
75 | ;; | |
7d7d915a SM |
76 | ;; - Highlight conceptual objects, such as function and variable names, and |
77 | ;; different objects types differently, i.e., (a) and (b) above, highlight | |
78 | ;; function names differently to variable names. | |
79 | ;; - Keep the faces distinct from each other as far as possible. | |
80 | ;; i.e., (a) above. | |
9bfbb130 SM |
81 | ;; - Use the same face for the same conceptual object, across all modes. |
82 | ;; i.e., (b) above, all modes that have items that can be thought of as, say, | |
83 | ;; keywords, should be highlighted with the same face, etc. | |
9bfbb130 SM |
84 | ;; - Make the face attributes fit the concept as far as possible. |
85 | ;; i.e., function names might be a bold colour such as blue, comments might | |
86 | ;; be a bright colour such as red, character strings might be brown, because, | |
87 | ;; err, strings are brown (that was not the reason, please believe me). | |
88 | ;; - Don't use a non-nil OVERRIDE unless you have a good reason. | |
89 | ;; Only use OVERRIDE for special things that are easy to define, such as the | |
90 | ;; way `...' quotes are treated in strings and comments in Emacs Lisp mode. | |
91 | ;; Don't use it to, say, highlight keywords in commented out code or strings. | |
92 | ;; - Err, that's it. | |
a1eb1cf1 | 93 | \f |
9bfbb130 SM |
94 | ;; User variables. |
95 | ||
5aa29679 RS |
96 | (defvar font-lock-verbose (* 0 1024) |
97 | "*If non-nil, means show status messages for buffer fontification. | |
98 | If a number, only buffers greater than this size have fontification messages.") | |
9bfbb130 SM |
99 | |
100 | ;;;###autoload | |
101 | (defvar font-lock-maximum-decoration nil | |
2d9cdda8 | 102 | "*Maximum decoration level for fontification. |
9bfbb130 SM |
103 | If nil, use the default decoration (typically the minimum available). |
104 | If t, use the maximum decoration available. | |
105 | If a number, use that level of decoration (or if not available the maximum). | |
106 | If a list, each element should be a cons pair of the form (MAJOR-MODE . LEVEL), | |
107 | where MAJOR-MODE is a symbol or t (meaning the default). For example: | |
5aa29679 RS |
108 | ((c-mode . t) (c++-mode . 2) (t . 1)) |
109 | means use the maximum decoration available for buffers in C mode, level 2 | |
110 | decoration for buffers in C++ mode, and level 1 decoration otherwise.") | |
030f4a35 | 111 | |
9bfbb130 SM |
112 | ;;;###autoload |
113 | (defvar font-lock-maximum-size (* 250 1024) | |
2d9cdda8 | 114 | "*Maximum size of a buffer for buffer fontification. |
9bfbb130 SM |
115 | Only buffers less than this can be fontified when Font Lock mode is turned on. |
116 | If nil, means size is irrelevant. | |
117 | If a list, each element should be a cons pair of the form (MAJOR-MODE . SIZE), | |
118 | where MAJOR-MODE is a symbol or t (meaning the default). For example: | |
5aa29679 RS |
119 | ((c-mode . 256000) (c++-mode . 256000) (rmail-mode . 1048576)) |
120 | means that the maximum size is 250K for buffers in C or C++ modes, one megabyte | |
121 | for buffers in Rmail mode, and size is irrelevant otherwise.") | |
9bfbb130 SM |
122 | \f |
123 | ;; Fontification variables: | |
124 | ||
125 | (defvar font-lock-comment-face 'font-lock-comment-face | |
a1eb1cf1 | 126 | "Face to use for comments.") |
030f4a35 | 127 | |
9bfbb130 | 128 | (defvar font-lock-string-face 'font-lock-string-face |
a1eb1cf1 | 129 | "Face to use for strings.") |
030f4a35 | 130 | |
9bfbb130 SM |
131 | (defvar font-lock-keyword-face 'font-lock-keyword-face |
132 | "Face to use for keywords.") | |
133 | ||
134 | (defvar font-lock-function-name-face 'font-lock-function-name-face | |
030f4a35 RS |
135 | "Face to use for function names.") |
136 | ||
9bfbb130 | 137 | (defvar font-lock-variable-name-face 'font-lock-variable-name-face |
a1eb1cf1 RS |
138 | "Face to use for variable names.") |
139 | ||
9bfbb130 SM |
140 | (defvar font-lock-type-face 'font-lock-type-face |
141 | "Face to use for type names.") | |
030f4a35 | 142 | |
9bfbb130 SM |
143 | (defvar font-lock-reference-face 'font-lock-reference-face |
144 | "Face to use for reference names.") | |
a1eb1cf1 | 145 | |
030f4a35 | 146 | (defvar font-lock-keywords nil |
d46c21ec SM |
147 | "*A list of the keywords to highlight. |
148 | Each element should be of the form: | |
a1eb1cf1 | 149 | |
826b2925 SM |
150 | MATCHER |
151 | (MATCHER . MATCH) | |
152 | (MATCHER . FACENAME) | |
153 | (MATCHER . HIGHLIGHT) | |
154 | (MATCHER HIGHLIGHT ...) | |
a078558d | 155 | (eval . FORM) |
a1eb1cf1 | 156 | |
9bfbb130 SM |
157 | where HIGHLIGHT should be either MATCH-HIGHLIGHT or MATCH-ANCHORED. |
158 | ||
a078558d SM |
159 | FORM is an expression, whose value should be a keyword element, evaluated when |
160 | the keyword is (first) used in a buffer. This feature can be used to provide a | |
161 | keyword that can only be generated when Font Lock mode is actually turned on. | |
162 | ||
9bfbb130 | 163 | For highlighting single items, typically only MATCH-HIGHLIGHT is required. |
d9f7b2d3 | 164 | However, if an item or (typically) items are to be highlighted following the |
9bfbb130 SM |
165 | instance of another item (the anchor) then MATCH-ANCHORED may be required. |
166 | ||
167 | MATCH-HIGHLIGHT should be of the form: | |
168 | ||
169 | (MATCH FACENAME OVERRIDE LAXMATCH) | |
170 | ||
171 | Where MATCHER can be either the regexp to search for, or the function name to | |
172 | call to make the search (called with one argument, the limit of the search). | |
173 | MATCH is the subexpression of MATCHER to be highlighted. FACENAME is an | |
174 | expression whose value is the face name to use. FACENAME's default attributes | |
175 | may be defined in `font-lock-face-attributes'. | |
a1eb1cf1 RS |
176 | |
177 | OVERRIDE and LAXMATCH are flags. If OVERRIDE is t, existing fontification may | |
9bfbb130 SM |
178 | be overwritten. If `keep', only parts not already fontified are highlighted. |
179 | If `prepend' or `append', existing fontification is merged with the new, in | |
180 | which the new or existing fontification, respectively, takes precedence. | |
d9f7b2d3 | 181 | If LAXMATCH is non-nil, no error is signaled if there is no MATCH in MATCHER. |
a1eb1cf1 | 182 | |
9bfbb130 SM |
183 | For example, an element of the form highlights (if not already highlighted): |
184 | ||
876f2438 SM |
185 | \"\\\\\\=<foo\\\\\\=>\" Discrete occurrences of \"foo\" in the value of the |
186 | variable `font-lock-keyword-face'. | |
9bfbb130 SM |
187 | (\"fu\\\\(bar\\\\)\" . 1) Substring \"bar\" within all occurrences of \"fubar\" in |
188 | the value of `font-lock-keyword-face'. | |
189 | (\"fubar\" . fubar-face) Occurrences of \"fubar\" in the value of `fubar-face'. | |
190 | (\"foo\\\\|bar\" 0 foo-bar-face t) | |
191 | Occurrences of either \"foo\" or \"bar\" in the value | |
192 | of `foo-bar-face', even if already highlighted. | |
193 | ||
194 | MATCH-ANCHORED should be of the form: | |
195 | ||
196 | (MATCHER PRE-MATCH-FORM POST-MATCH-FORM MATCH-HIGHLIGHT ...) | |
197 | ||
876f2438 SM |
198 | Where MATCHER is as for MATCH-HIGHLIGHT with one exception. The limit of the |
199 | search is currently guaranteed to be (no greater than) the end of the line. | |
200 | PRE-MATCH-FORM and POST-MATCH-FORM are evaluated before the first, and after | |
201 | the last, instance MATCH-ANCHORED's MATCHER is used. Therefore they can be | |
202 | used to initialise before, and cleanup after, MATCHER is used. Typically, | |
203 | PRE-MATCH-FORM is used to move to some position relative to the original | |
204 | MATCHER, before starting with MATCH-ANCHORED's MATCHER. POST-MATCH-FORM might | |
205 | be used to move, before resuming with MATCH-ANCHORED's parent's MATCHER. | |
9bfbb130 SM |
206 | |
207 | For example, an element of the form highlights (if not already highlighted): | |
208 | ||
876f2438 | 209 | (\"\\\\\\=<anchor\\\\\\=>\" (0 anchor-face) (\"\\\\\\=<item\\\\\\=>\" nil nil (0 item-face))) |
9bfbb130 | 210 | |
876f2438 SM |
211 | Discrete occurrences of \"anchor\" in the value of `anchor-face', and subsequent |
212 | discrete occurrences of \"item\" (on the same line) in the value of `item-face'. | |
213 | (Here PRE-MATCH-FORM and POST-MATCH-FORM are nil. Therefore \"item\" is | |
214 | initially searched for starting from the end of the match of \"anchor\", and | |
215 | searching for subsequent instance of \"anchor\" resumes from where searching | |
216 | for \"item\" concluded.) | |
9bfbb130 SM |
217 | |
218 | Note that the MATCH-ANCHORED feature is experimental; in the future, we may | |
219 | replace it with other ways of providing this functionality. | |
220 | ||
a1eb1cf1 RS |
221 | These regular expressions should not match text which spans lines. While |
222 | \\[font-lock-fontify-buffer] handles multi-line patterns correctly, updating | |
223 | when you edit the buffer does not, since it considers text one line at a time. | |
224 | ||
9bfbb130 | 225 | Be very careful composing regexps for this list; |
a1eb1cf1 | 226 | the wrong pattern can dramatically slow things down!") |
9bfbb130 | 227 | (make-variable-buffer-local 'font-lock-keywords) |
030f4a35 | 228 | |
b89e1134 SM |
229 | (defvar font-lock-defaults nil |
230 | "If set by a major mode, should be the defaults for Font Lock mode. | |
9bfbb130 | 231 | The value should be like the `cdr' of an item in `font-lock-defaults-alist'.") |
b89e1134 SM |
232 | |
233 | (defvar font-lock-defaults-alist | |
9bfbb130 SM |
234 | (let (;; For C and Lisp modes we use `beginning-of-defun', rather than nil, |
235 | ;; for SYNTAX-BEGIN. Thus the calculation of the cache is usually | |
236 | ;; faster but not infallible, so we risk mis-fontification. --sm. | |
fb512de9 | 237 | (c-mode-defaults |
9bfbb130 SM |
238 | '((c-font-lock-keywords c-font-lock-keywords-1 |
239 | c-font-lock-keywords-2 c-font-lock-keywords-3) | |
a078558d SM |
240 | nil nil ((?_ . "w")) beginning-of-defun |
241 | (font-lock-mark-block-function . mark-defun))) | |
fb512de9 SM |
242 | (c++-mode-defaults |
243 | '((c++-font-lock-keywords c++-font-lock-keywords-1 | |
9bfbb130 | 244 | c++-font-lock-keywords-2 c++-font-lock-keywords-3) |
a078558d SM |
245 | nil nil ((?_ . "w") (?~ . "w")) beginning-of-defun |
246 | (font-lock-mark-block-function . mark-defun))) | |
fb512de9 | 247 | (lisp-mode-defaults |
9bfbb130 SM |
248 | '((lisp-font-lock-keywords |
249 | lisp-font-lock-keywords-1 lisp-font-lock-keywords-2) | |
5aa29679 RS |
250 | nil nil (("+-*/.<>=!?$%_&~^:" . "w")) beginning-of-defun |
251 | (font-lock-mark-block-function . mark-defun))) | |
d46c21ec | 252 | (scheme-mode-defaults |
5aa29679 RS |
253 | '(scheme-font-lock-keywords |
254 | nil t (("+-*/.<>=!?$%_&~^:" . "w")) beginning-of-defun | |
255 | (font-lock-mark-block-function . mark-defun))) | |
d46c21ec | 256 | ;; For TeX modes we could use `backward-paragraph' for the same reason. |
a078558d SM |
257 | ;; But we don't, because paragraph breaks are arguably likely enough to |
258 | ;; occur within a genuine syntactic block to make it too risky. | |
259 | ;; However, we do specify a MARK-BLOCK function as that cannot result | |
260 | ;; in a mis-fontification even if it might not fontify enough. --sm. | |
261 | (tex-mode-defaults '(tex-font-lock-keywords nil nil ((?$ . "\"")) nil | |
262 | (font-lock-mark-block-function . mark-paragraph))) | |
d46c21ec | 263 | ) |
826b2925 | 264 | (list |
d46c21ec SM |
265 | (cons 'bibtex-mode tex-mode-defaults) |
266 | (cons 'c++-c-mode c-mode-defaults) | |
267 | (cons 'c++-mode c++-mode-defaults) | |
268 | (cons 'c-mode c-mode-defaults) | |
9bfbb130 | 269 | (cons 'elec-c-mode c-mode-defaults) |
d46c21ec SM |
270 | (cons 'emacs-lisp-mode lisp-mode-defaults) |
271 | (cons 'inferior-scheme-mode scheme-mode-defaults) | |
272 | (cons 'latex-mode tex-mode-defaults) | |
273 | (cons 'lisp-mode lisp-mode-defaults) | |
274 | (cons 'lisp-interaction-mode lisp-mode-defaults) | |
275 | (cons 'plain-tex-mode tex-mode-defaults) | |
276 | (cons 'scheme-mode scheme-mode-defaults) | |
277 | (cons 'scheme-interaction-mode scheme-mode-defaults) | |
278 | (cons 'slitex-mode tex-mode-defaults) | |
279 | (cons 'tex-mode tex-mode-defaults))) | |
9bfbb130 | 280 | "Alist of default major mode and Font Lock defaults. |
b89e1134 | 281 | Each item should be a list of the form: |
d46c21ec | 282 | |
a2b8e66b | 283 | (MAJOR-MODE . (KEYWORDS KEYWORDS-ONLY CASE-FOLD SYNTAX-ALIST SYNTAX-BEGIN |
a078558d | 284 | ...)) |
d46c21ec | 285 | |
9bfbb130 SM |
286 | where MAJOR-MODE is a symbol. KEYWORDS may be a symbol (a variable or function |
287 | whose value is the keywords to use for fontification) or a list of symbols. | |
288 | If KEYWORDS-ONLY is non-nil, syntactic fontification (strings and comments) is | |
289 | not performed. If CASE-FOLD is non-nil, the case of the keywords is ignored | |
290 | when fontifying. If SYNTAX-ALIST is non-nil, it should be a list of cons pairs | |
5aa29679 RS |
291 | of the form (CHAR-OR-STRING . STRING) used to set the local Font Lock syntax |
292 | table, for keyword and syntactic fontification (see `modify-syntax-entry'). | |
9bfbb130 SM |
293 | |
294 | If SYNTAX-BEGIN is non-nil, it should be a function with no args used to move | |
295 | backwards outside any enclosing syntactic block, for syntactic fontification. | |
296 | Typical values are `beginning-of-line' (i.e., the start of the line is known to | |
297 | be outside a syntactic block), or `beginning-of-defun' for programming modes or | |
298 | `backward-paragraph' for textual modes (i.e., the mode-dependent function is | |
299 | known to move outside a syntactic block). If nil, the beginning of the buffer | |
300 | is used as a position outside of a syntactic block, in the worst case. | |
d46c21ec SM |
301 | |
302 | These item elements are used by Font Lock mode to set the variables | |
9bfbb130 | 303 | `font-lock-keywords', `font-lock-keywords-only', |
d46c21ec | 304 | `font-lock-keywords-case-fold-search', `font-lock-syntax-table' and |
a2b8e66b SM |
305 | `font-lock-beginning-of-syntax-function', respectively. |
306 | ||
a078558d SM |
307 | Further item elements are alists of the form (VARIABLE . VALUE) and are in no |
308 | particular order. Each VARIABLE is made buffer-local before set to VALUE. | |
a2b8e66b | 309 | |
a078558d SM |
310 | Currently, appropriate variables include `font-lock-mark-block-function'. |
311 | If this is non-nil, it should be a function with no args used to mark any | |
312 | enclosing block of text, for fontification via \\[font-lock-fontify-block]. | |
313 | Typical values are `mark-defun' for programming modes or `mark-paragraph' for | |
314 | textual modes (i.e., the mode-dependent function is known to put point and mark | |
315 | around a text block relevant to that mode). | |
a2b8e66b | 316 | |
a078558d | 317 | Other variables include those for buffer-specialised fontification functions, |
a2b8e66b | 318 | `font-lock-fontify-buffer-function', `font-lock-unfontify-buffer-function', |
5aa29679 RS |
319 | `font-lock-fontify-region-function', `font-lock-unfontify-region-function', |
320 | `font-lock-maximum-size' and `font-lock-inhibit-thing-lock'.") | |
d46c21ec | 321 | |
9bfbb130 | 322 | (defvar font-lock-keywords-only nil |
d46c21ec SM |
323 | "*Non-nil means Font Lock should not fontify comments or strings. |
324 | This is normally set via `font-lock-defaults'.") | |
b89e1134 | 325 | |
030f4a35 | 326 | (defvar font-lock-keywords-case-fold-search nil |
d46c21ec SM |
327 | "*Non-nil means the patterns in `font-lock-keywords' are case-insensitive. |
328 | This is normally set via `font-lock-defaults'.") | |
030f4a35 | 329 | |
b056da51 | 330 | (defvar font-lock-syntax-table nil |
799761f0 | 331 | "Non-nil means use this syntax table for fontifying. |
d46c21ec SM |
332 | If this is nil, the major mode's syntax table is used. |
333 | This is normally set via `font-lock-defaults'.") | |
334 | ||
9bfbb130 SM |
335 | ;; If this is nil, we only use the beginning of the buffer if we can't use |
336 | ;; `font-lock-cache-position' and `font-lock-cache-state'. | |
d46c21ec | 337 | (defvar font-lock-beginning-of-syntax-function nil |
9bfbb130 | 338 | "*Non-nil means use this function to move back outside of a syntactic block. |
a078558d SM |
339 | When called with no args it should leave point at the beginning of any |
340 | enclosing syntactic block. | |
9bfbb130 | 341 | If this is nil, the beginning of the buffer is used (in the worst case). |
d46c21ec | 342 | This is normally set via `font-lock-defaults'.") |
b056da51 | 343 | |
a078558d SM |
344 | (defvar font-lock-mark-block-function nil |
345 | "*Non-nil means use this function to mark a block of text. | |
346 | When called with no args it should leave point at the beginning of any | |
347 | enclosing textual block and mark at the end. | |
348 | This is normally set via `font-lock-defaults'.") | |
349 | ||
a2b8e66b SM |
350 | (defvar font-lock-fontify-buffer-function 'font-lock-default-fontify-buffer |
351 | "Function to use for fontifying the buffer. | |
352 | This is normally set via `font-lock-defaults'.") | |
353 | ||
354 | (defvar font-lock-unfontify-buffer-function 'font-lock-default-unfontify-buffer | |
355 | "Function to use for unfontifying the buffer. | |
356 | This is used when turning off Font Lock mode. | |
357 | This is normally set via `font-lock-defaults'.") | |
358 | ||
359 | (defvar font-lock-fontify-region-function 'font-lock-default-fontify-region | |
360 | "Function to use for fontifying a region. | |
361 | It should take two args, the beginning and end of the region, and an optional | |
362 | third arg VERBOSE. If non-nil, the function should print status messages. | |
363 | This is normally set via `font-lock-defaults'.") | |
364 | ||
365 | (defvar font-lock-unfontify-region-function 'font-lock-default-unfontify-region | |
366 | "Function to use for unfontifying a region. | |
367 | It should take two args, the beginning and end of the region. | |
368 | This is normally set via `font-lock-defaults'.") | |
369 | ||
370 | (defvar font-lock-inhibit-thing-lock nil | |
371 | "List of Font Lock mode related modes that should not be turned on. | |
372 | Currently, valid mode names as `fast-lock-mode' and `lazy-lock-mode'. | |
373 | This is normally set via `font-lock-defaults'.") | |
374 | ||
9bfbb130 SM |
375 | (defvar font-lock-mode nil) ; For the modeline. |
376 | (defvar font-lock-fontified nil) ; Whether we have fontified the buffer. | |
826b2925 | 377 | |
9bfbb130 SM |
378 | ;;;###autoload |
379 | (defvar font-lock-mode-hook nil | |
380 | "Function or functions to run on entry to Font Lock mode.") | |
030f4a35 | 381 | \f |
5aa29679 RS |
382 | ;; Font Lock mode. |
383 | ||
384 | (eval-when-compile | |
385 | ;; We don't do this at the top-level as we only use non-autoloaded macros. | |
386 | (require 'cl)) | |
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 | ||
a2b8e66b SM |
405 | Alternatively, you can use Global Font Lock mode to automagically turn on Font |
406 | Lock mode in buffers whose major mode supports it, or in buffers whose major | |
407 | mode is one of `font-lock-global-modes'. For example, put in your ~/.emacs: | |
408 | ||
409 | (global-font-lock-mode t) | |
410 | ||
a1eb1cf1 RS |
411 | The default Font Lock mode faces and their attributes are defined in the |
412 | variable `font-lock-face-attributes', and Font Lock mode default settings in | |
9bfbb130 SM |
413 | the variable `font-lock-defaults-alist'. You can set your own default settings |
414 | for some mode, by setting a buffer local value for `font-lock-defaults', via | |
415 | its mode hook. | |
030f4a35 | 416 | |
5aa29679 RS |
417 | Font Lock mode has a number of support modes that may be used to speed up Font |
418 | Lock mode in various ways. See the variable `font-lock-support-mode'. | |
419 | ||
826b2925 | 420 | Where modes support different levels of fontification, you can use the variable |
fb512de9 | 421 | `font-lock-maximum-decoration' to specify which level you generally prefer. |
b89e1134 SM |
422 | When you turn Font Lock mode on/off the buffer is fontified/defontified, though |
423 | fontification occurs only if the buffer is less than `font-lock-maximum-size'. | |
7d7d915a SM |
424 | |
425 | To fontify a buffer, without turning on Font Lock mode and regardless of buffer | |
426 | size, you can use \\[font-lock-fontify-buffer]. | |
a078558d SM |
427 | |
428 | To fontify a block (the function or paragraph containing point, or a number of | |
429 | lines around point), perhaps because modification on the current line caused | |
430 | syntactic change on other lines, you can use \\[font-lock-fontify-block]." | |
030f4a35 | 431 | (interactive "P") |
a2b8e66b SM |
432 | ;; Don't turn on Font Lock mode if we don't have a display (we're running a |
433 | ;; batch job) or if the buffer is invisible (the name starts with a space). | |
5aa29679 | 434 | (let ((on-p (and (not noninteractive) |
a2b8e66b SM |
435 | (not (eq (aref (buffer-name) 0) ?\ )) |
436 | (if arg | |
437 | (> (prefix-numeric-value arg) 0) | |
343204bd | 438 | (not font-lock-mode))))) |
030f4a35 | 439 | (set (make-local-variable 'font-lock-mode) on-p) |
5aa29679 RS |
440 | ;; Turn on Font Lock mode. |
441 | (when on-p | |
442 | (make-local-hook 'after-change-functions) | |
443 | (add-hook 'after-change-functions 'font-lock-after-change-function nil t) | |
444 | (font-lock-set-defaults) | |
445 | (font-lock-turn-on-thing-lock) | |
446 | (run-hooks 'font-lock-mode-hook) | |
447 | ;; Fontify the buffer if we have to. | |
448 | (let ((max-size (font-lock-value-in-major-mode font-lock-maximum-size))) | |
449 | (cond (font-lock-fontified | |
450 | nil) | |
451 | ((or (null max-size) (> max-size (buffer-size))) | |
452 | (font-lock-fontify-buffer)) | |
453 | (font-lock-verbose | |
454 | (message "Fontifying %s...buffer too big" (buffer-name)))))) | |
455 | ;; Turn off Font Lock mode. | |
456 | (when (not on-p) | |
457 | (remove-hook 'after-change-functions 'font-lock-after-change-function t) | |
458 | (font-lock-unfontify-buffer) | |
459 | (font-lock-turn-off-thing-lock) | |
460 | (font-lock-unset-defaults)) | |
030f4a35 RS |
461 | (force-mode-line-update))) |
462 | ||
a1eb1cf1 RS |
463 | ;;;###autoload |
464 | (defun turn-on-font-lock () | |
a465832f SM |
465 | "Turn on Font Lock mode conditionally. |
466 | Turn on only if the buffer mode supports it and the terminal can display it." | |
467 | (if (and window-system | |
468 | (not font-lock-mode) | |
469 | (or font-lock-defaults (assq major-mode font-lock-defaults-alist))) | |
470 | (font-lock-mode t))) | |
a2b8e66b | 471 | \f |
5aa29679 RS |
472 | ;; Global Font Lock mode. |
473 | ;; | |
a2b8e66b | 474 | ;; A few people have hassled in the past for a way to make it easier to turn on |
5aa29679 RS |
475 | ;; Font Lock mode, without the user needing to know for which modes s/he has to |
476 | ;; turn it on, perhaps the same way hilit19.el/hl319.el does. I've always | |
a2b8e66b SM |
477 | ;; balked at that way, as I see it as just re-moulding the same problem in |
478 | ;; another form. That is; some person would still have to keep track of which | |
479 | ;; modes (which may not even be distributed with Emacs) support Font Lock mode. | |
480 | ;; The list would always be out of date. And that person might have to be me. | |
481 | ||
5aa29679 RS |
482 | ;; Implementation. |
483 | ;; | |
484 | ;; In a previous discussion the following hack came to mind. It is a gross | |
485 | ;; hack, but it generally works. We use the convention that major modes start | |
486 | ;; by calling the function `kill-all-local-variables', which in turn runs | |
a2b8e66b SM |
487 | ;; functions on the hook variable `change-major-mode-hook'. We attach our |
488 | ;; function `font-lock-change-major-mode' to that hook. Of course, when this | |
489 | ;; hook is run, the major mode is in the process of being changed and we do not | |
490 | ;; know what the final major mode will be. So, `font-lock-change-major-mode' | |
491 | ;; only (a) notes the name of the current buffer, and (b) adds our function | |
5aa29679 RS |
492 | ;; `turn-on-font-lock-if-enabled' to the hook variables `find-file-hooks' and |
493 | ;; `post-command-hook' (for buffers that are not visiting files). By the time | |
494 | ;; the functions on the first of these hooks to be run are run, the new major | |
495 | ;; mode is assumed to be in place. This way we get a Font Lock function run | |
496 | ;; when a major mode is turned on, without knowing major modes or their hooks. | |
497 | ;; | |
a2b8e66b SM |
498 | ;; Naturally this requires that (a) major modes run `kill-all-local-variables', |
499 | ;; as they are supposed to do, and (b) the major mode is in place after the | |
5aa29679 RS |
500 | ;; file is visited or the command that ran `kill-all-local-variables' has |
501 | ;; finished, whichever the sooner. Arguably, any major mode that does not | |
502 | ;; follow the convension (a) is broken, and I can't think of any reason why (b) | |
503 | ;; would not be met (except `gnudoit' on non-files). However, it is not clean. | |
504 | ;; | |
a2b8e66b SM |
505 | ;; Probably the cleanest solution is to have each major mode function run some |
506 | ;; hook, e.g., `major-mode-hook', but maybe implementing that change is | |
5aa29679 RS |
507 | ;; impractical. I am personally against making `setq' a macro or be advised, |
508 | ;; or have a special function such as `set-major-mode', but maybe someone can | |
509 | ;; come up with another solution? | |
510 | ||
511 | ;; User interface. | |
512 | ;; | |
513 | ;; Although Global Font Lock mode is a pseudo-mode, I think that the user | |
514 | ;; interface should conform to the usual Emacs convention for modes, i.e., a | |
515 | ;; command to toggle the feature (`global-font-lock-mode') with a variable for | |
516 | ;; finer control of the mode's behaviour (`font-lock-global-modes'). | |
517 | ;; | |
518 | ;; I don't think it is better that the feature be enabled via a variable, since | |
519 | ;; it does not conform to the usual convention. I don't think the feature | |
520 | ;; should be enabled by loading font-lock.el, since other mechanisms such as | |
521 | ;; M-x font-lock-mode RET or (add-hook 'c-mode-hook 'turn-on-font-lock) would | |
522 | ;; cause Font Lock mode to be turned on everywhere, and it is not intuitive or | |
523 | ;; informative because loading a file tells you nothing about the feature or | |
524 | ;; how to control it. It would be contrary to the Principle of Least Surprise. | |
a2b8e66b | 525 | |
2d9cdda8 | 526 | (defvar font-lock-buffers nil) ; For remembering buffers. |
5aa29679 | 527 | (defvar global-font-lock-mode nil) |
a078558d | 528 | |
a2b8e66b SM |
529 | ;;;###autoload |
530 | (defvar font-lock-global-modes t | |
5aa29679 | 531 | "*Modes for which Font Lock mode is automagically turned on. |
a2b8e66b SM |
532 | Global Font Lock mode is controlled by the `global-font-lock-mode' command. |
533 | If nil, means no modes have Font Lock mode automatically turned on. | |
534 | If t, all modes that support Font Lock mode have it automatically turned on. | |
5aa29679 RS |
535 | If a list, it should be a list of `major-mode' symbol names for which Font Lock |
536 | mode should be automatically turned on. The sense of the list is negated if it | |
537 | begins with `not'. For example: | |
538 | (c-mode c++-mode) | |
539 | means that Font Lock mode is turned on for buffers in C and C++ modes only.") | |
a2b8e66b SM |
540 | |
541 | ;;;###autoload | |
343204bd | 542 | (defun global-font-lock-mode (&optional arg message) |
a2b8e66b | 543 | "Toggle Global Font Lock mode. |
343204bd SM |
544 | With prefix ARG, turn Global Font Lock mode on if and only if ARG is positive. |
545 | Displays a message saying whether the mode is on or off if MESSAGE is non-nil. | |
546 | Returns the new status of Global Font Lock mode (non-nil means on). | |
a2b8e66b SM |
547 | |
548 | When Global Font Lock mode is enabled, Font Lock mode is automagically | |
549 | turned on in a buffer if its major mode is one of `font-lock-global-modes'." | |
343204bd SM |
550 | (interactive "P\np") |
551 | (let ((off-p (if arg | |
552 | (<= (prefix-numeric-value arg) 0) | |
5aa29679 | 553 | global-font-lock-mode))) |
343204bd | 554 | (if off-p |
5aa29679 | 555 | (remove-hook 'find-file-hooks 'turn-on-font-lock-if-enabled) |
6c0fc428 | 556 | (add-hook 'find-file-hooks 'turn-on-font-lock-if-enabled) |
5aa29679 | 557 | (add-hook 'post-command-hook 'turn-on-font-lock-if-enabled) |
2d9cdda8 | 558 | (setq font-lock-buffers (buffer-list))) |
5aa29679 RS |
559 | (when message |
560 | (message "Global Font Lock mode is now %s." (if off-p "OFF" "ON"))) | |
561 | (setq global-font-lock-mode (not off-p)))) | |
a2b8e66b | 562 | |
a2b8e66b | 563 | (defun font-lock-change-major-mode () |
5aa29679 RS |
564 | ;; Turn off Font Lock mode if it's on. |
565 | (when font-lock-mode | |
566 | (font-lock-mode nil)) | |
a2b8e66b | 567 | ;; Gross hack warning: Delicate readers should avert eyes now. |
343204bd SM |
568 | ;; Something is running `kill-all-local-variables', which generally means the |
569 | ;; major mode is being changed. Run `turn-on-font-lock-if-enabled' after the | |
5aa29679 RS |
570 | ;; file is visited or the current command has finished. |
571 | (when global-font-lock-mode | |
572 | (add-hook 'post-command-hook 'turn-on-font-lock-if-enabled) | |
573 | (add-to-list 'font-lock-buffers (current-buffer)))) | |
a2b8e66b | 574 | |
a465832f | 575 | (defun turn-on-font-lock-if-enabled () |
a2b8e66b | 576 | ;; Gross hack warning: Delicate readers should avert eyes now. |
a465832f SM |
577 | ;; Turn on Font Lock mode if it's one of `font-lock-global-modes'. |
578 | (remove-hook 'post-command-hook 'turn-on-font-lock-if-enabled) | |
2d9cdda8 SM |
579 | (while font-lock-buffers |
580 | (if (buffer-live-p (car font-lock-buffers)) | |
a2b8e66b | 581 | (save-excursion |
2d9cdda8 | 582 | (set-buffer (car font-lock-buffers)) |
a465832f SM |
583 | (if (or (eq font-lock-global-modes t) |
584 | (if (eq (car-safe font-lock-global-modes) 'not) | |
585 | (not (memq major-mode (cdr font-lock-global-modes))) | |
586 | (memq major-mode font-lock-global-modes))) | |
343204bd SM |
587 | (let (inhibit-quit) |
588 | (turn-on-font-lock))))) | |
2d9cdda8 | 589 | (setq font-lock-buffers (cdr font-lock-buffers)))) |
a2b8e66b | 590 | |
5aa29679 RS |
591 | (add-hook 'change-major-mode-hook 'font-lock-change-major-mode) |
592 | ||
a2b8e66b SM |
593 | ;; End of Global Font Lock mode. |
594 | \f | |
5aa29679 RS |
595 | ;; Font Lock Support mode. |
596 | ;; | |
597 | ;; This is the code used to interface font-lock.el with any of its add-on | |
598 | ;; packages, and provide the user interface. Packages that have their own | |
599 | ;; local buffer fontification functions (see below) may have to call | |
600 | ;; `font-lock-after-fontify-buffer' and/or `font-lock-after-unfontify-buffer' | |
601 | ;; themselves. | |
602 | ||
603 | ;;;###autoload | |
604 | (defvar font-lock-support-mode nil | |
605 | "*Support mode for Font Lock mode. | |
606 | Support modes speed up Font Lock mode by being choosy about when fontification | |
607 | occurs. Known support modes are Fast Lock mode (symbol `fast-lock-mode') and | |
608 | Lazy Lock mode (symbol `lazy-lock-mode'). See those modes for more info. | |
609 | If nil, means support for Font Lock mode is never performed. | |
610 | If a symbol, use that support mode. | |
611 | If a list, each element should be of the form (MAJOR-MODE . SUPPORT-MODE), | |
612 | where MAJOR-MODE is a symbol or t (meaning the default). For example: | |
613 | ((c-mode . fast-lock-mode) (c++-mode . fast-lock-mode) (t . lazy-lock-mode)) | |
614 | means that Fast Lock mode is used to support Font Lock mode for buffers in C or | |
615 | C++ modes, and Lazy Lock mode is used to support Font Lock mode otherwise. | |
616 | ||
617 | The value of this variable is used when Font Lock mode is turned on.") | |
618 | ||
619 | (defun font-lock-turn-on-thing-lock () | |
620 | (let ((thing-mode (font-lock-value-in-major-mode font-lock-support-mode))) | |
621 | (cond ((eq thing-mode 'fast-lock-mode) | |
622 | (fast-lock-mode t)) | |
623 | ((eq thing-mode 'lazy-lock-mode) | |
624 | (lazy-lock-mode t))))) | |
625 | ||
626 | (defvar fast-lock-mode nil) | |
627 | (defvar lazy-lock-mode nil) | |
628 | ||
629 | (defun font-lock-turn-off-thing-lock () | |
630 | (cond (fast-lock-mode | |
631 | (fast-lock-mode nil)) | |
632 | (lazy-lock-mode | |
633 | (lazy-lock-mode nil)))) | |
634 | ||
635 | (defun font-lock-after-fontify-buffer () | |
636 | (cond (fast-lock-mode | |
637 | (fast-lock-after-fontify-buffer)) | |
638 | (lazy-lock-mode | |
639 | (lazy-lock-after-fontify-buffer)))) | |
640 | ||
641 | (defun font-lock-after-unfontify-buffer () | |
642 | (cond (fast-lock-mode | |
643 | (fast-lock-after-unfontify-buffer)) | |
644 | (lazy-lock-mode | |
645 | (lazy-lock-after-unfontify-buffer)))) | |
646 | ||
647 | ;; End of Font Lock Support mode. | |
648 | \f | |
a2b8e66b | 649 | ;; Fontification functions. |
a1eb1cf1 | 650 | |
a1eb1cf1 | 651 | ;;;###autoload |
030f4a35 | 652 | (defun font-lock-fontify-buffer () |
a1eb1cf1 | 653 | "Fontify the current buffer the way `font-lock-mode' would." |
030f4a35 | 654 | (interactive) |
a2b8e66b SM |
655 | (let ((font-lock-verbose (or font-lock-verbose (interactive-p)))) |
656 | (funcall font-lock-fontify-buffer-function))) | |
657 | ||
658 | (defun font-lock-unfontify-buffer () | |
659 | (funcall font-lock-unfontify-buffer-function)) | |
660 | ||
661 | (defun font-lock-fontify-region (beg end &optional loudly) | |
662 | (funcall font-lock-fontify-region-function beg end loudly)) | |
663 | ||
664 | (defun font-lock-unfontify-region (beg end) | |
665 | (funcall font-lock-unfontify-region-function beg end)) | |
666 | ||
667 | (defun font-lock-default-fontify-buffer () | |
5aa29679 RS |
668 | (let ((verbose (if (numberp font-lock-verbose) |
669 | (> (buffer-size) font-lock-verbose) | |
670 | font-lock-verbose))) | |
a1eb1cf1 | 671 | (if verbose (message "Fontifying %s..." (buffer-name))) |
7d7d915a SM |
672 | ;; Make sure we have the right `font-lock-keywords' etc. |
673 | (if (not font-lock-mode) (font-lock-set-defaults)) | |
674 | ;; Make sure we fontify etc. in the whole buffer. | |
675 | (save-restriction | |
676 | (widen) | |
677 | (condition-case nil | |
678 | (save-excursion | |
679 | (save-match-data | |
680 | (font-lock-fontify-region (point-min) (point-max) verbose) | |
271c888a | 681 | (font-lock-after-fontify-buffer) |
7d7d915a SM |
682 | (setq font-lock-fontified t))) |
683 | ;; We don't restore the old fontification, so it's best to unfontify. | |
a078558d | 684 | (quit (font-lock-unfontify-buffer)))) |
6c0fc428 | 685 | (if verbose (message "Fontifying %s...%s" (buffer-name) |
a078558d | 686 | (if font-lock-fontified "done" "aborted"))))) |
7d7d915a | 687 | |
a2b8e66b SM |
688 | (defun font-lock-default-unfontify-buffer () |
689 | (save-restriction | |
690 | (widen) | |
691 | (font-lock-unfontify-region (point-min) (point-max)) | |
271c888a | 692 | (font-lock-after-unfontify-buffer) |
a2b8e66b | 693 | (setq font-lock-fontified nil))) |
9bfbb130 SM |
694 | |
695 | ;; We use this wrapper. However, `font-lock-fontify-region' used to be the | |
696 | ;; name used for `font-lock-fontify-syntactically-region', so a change isn't | |
697 | ;; back-compatible. But you shouldn't be calling these directly, should you? | |
a2b8e66b | 698 | (defun font-lock-default-fontify-region (beg end loudly) |
876f2438 SM |
699 | (let ((modified (buffer-modified-p)) |
700 | (buffer-undo-list t) (inhibit-read-only t) | |
701 | (old-syntax-table (syntax-table)) | |
7d7d915a | 702 | before-change-functions after-change-functions |
876f2438 SM |
703 | buffer-file-name buffer-file-truename) |
704 | (unwind-protect | |
a078558d SM |
705 | (save-restriction |
706 | (widen) | |
876f2438 SM |
707 | ;; Use the fontification syntax table, if any. |
708 | (if font-lock-syntax-table (set-syntax-table font-lock-syntax-table)) | |
709 | ;; Now do the fontification. | |
710 | (if font-lock-keywords-only | |
711 | (font-lock-unfontify-region beg end) | |
712 | (font-lock-fontify-syntactically-region beg end loudly)) | |
713 | (font-lock-fontify-keywords-region beg end loudly)) | |
714 | ;; Clean up. | |
715 | (set-syntax-table old-syntax-table) | |
716 | (and (not modified) (buffer-modified-p) (set-buffer-modified-p nil))))) | |
9bfbb130 SM |
717 | |
718 | ;; The following must be rethought, since keywords can override fontification. | |
719 | ; ;; Now scan for keywords, but not if we are inside a comment now. | |
720 | ; (or (and (not font-lock-keywords-only) | |
721 | ; (let ((state (parse-partial-sexp beg end nil nil | |
722 | ; font-lock-cache-state))) | |
723 | ; (or (nth 4 state) (nth 7 state)))) | |
724 | ; (font-lock-fontify-keywords-region beg end)) | |
725 | ||
a2b8e66b | 726 | (defun font-lock-default-unfontify-region (beg end) |
9bfbb130 SM |
727 | (let ((modified (buffer-modified-p)) |
728 | (buffer-undo-list t) (inhibit-read-only t) | |
7d7d915a | 729 | before-change-functions after-change-functions |
9bfbb130 SM |
730 | buffer-file-name buffer-file-truename) |
731 | (remove-text-properties beg end '(face nil)) | |
876f2438 | 732 | (and (not modified) (buffer-modified-p) (set-buffer-modified-p nil)))) |
9bfbb130 SM |
733 | |
734 | ;; Called when any modification is made to buffer text. | |
735 | (defun font-lock-after-change-function (beg end old-len) | |
736 | (save-excursion | |
737 | (save-match-data | |
738 | ;; Rescan between start of line from `beg' and start of line after `end'. | |
739 | (font-lock-fontify-region | |
740 | (progn (goto-char beg) (beginning-of-line) (point)) | |
741 | (progn (goto-char end) (forward-line 1) (point)))))) | |
a2b8e66b | 742 | |
a078558d SM |
743 | (defun font-lock-fontify-block (&optional arg) |
744 | "Fontify some lines the way `font-lock-fontify-buffer' would. | |
745 | The lines could be a function or paragraph, or a specified number of lines. | |
a078558d | 746 | If ARG is given, fontify that many lines before and after point, or 16 lines if |
a465832f SM |
747 | no ARG is given and `font-lock-mark-block-function' is nil. |
748 | If `font-lock-mark-block-function' non-nil and no ARG is given, it is used to | |
749 | delimit the region to fontify." | |
a078558d | 750 | (interactive "P") |
a465832f | 751 | (let (font-lock-beginning-of-syntax-function deactivate-mark) |
a078558d SM |
752 | ;; Make sure we have the right `font-lock-keywords' etc. |
753 | (if (not font-lock-mode) (font-lock-set-defaults)) | |
a2b8e66b SM |
754 | (save-excursion |
755 | (save-match-data | |
756 | (condition-case error-data | |
a078558d SM |
757 | (if (or arg (not font-lock-mark-block-function)) |
758 | (let ((lines (if arg (prefix-numeric-value arg) 16))) | |
759 | (font-lock-fontify-region | |
760 | (save-excursion (forward-line (- lines)) (point)) | |
761 | (save-excursion (forward-line lines) (point)))) | |
762 | (funcall font-lock-mark-block-function) | |
763 | (font-lock-fontify-region (point) (mark))) | |
6c0fc428 | 764 | ((error quit) (message "Fontifying block...%s" error-data))))))) |
a078558d | 765 | |
94de9afe | 766 | (define-key facemenu-keymap "\M-g" 'font-lock-fontify-block) |
9bfbb130 SM |
767 | \f |
768 | ;; Syntactic fontification functions. | |
769 | ||
a078558d SM |
770 | ;; These record the parse state at a particular position, always the start of a |
771 | ;; line. Used to make `font-lock-fontify-syntactically-region' faster. | |
772 | (defvar font-lock-cache-position nil) | |
773 | (defvar font-lock-cache-state nil) | |
774 | (make-variable-buffer-local 'font-lock-cache-position) | |
775 | (make-variable-buffer-local 'font-lock-cache-state) | |
776 | ||
9bfbb130 SM |
777 | (defun font-lock-fontify-syntactically-region (start end &optional loudly) |
778 | "Put proper face on each string and comment between START and END. | |
779 | START should be at the beginning of a line." | |
876f2438 | 780 | (let ((synstart (if comment-start-skip |
9bfbb130 SM |
781 | (concat "\\s\"\\|" comment-start-skip) |
782 | "\\s\"")) | |
783 | (comstart (if comment-start-skip | |
784 | (concat "\\s<\\|" comment-start-skip) | |
785 | "\\s<")) | |
9bfbb130 SM |
786 | state prev prevstate) |
787 | (if loudly (message "Fontifying %s... (syntactically...)" (buffer-name))) | |
a078558d SM |
788 | (goto-char start) |
789 | ;; | |
790 | ;; Find the state at the `beginning-of-line' before `start'. | |
791 | (if (eq start font-lock-cache-position) | |
792 | ;; Use the cache for the state of `start'. | |
793 | (setq state font-lock-cache-state) | |
794 | ;; Find the state of `start'. | |
795 | (if (null font-lock-beginning-of-syntax-function) | |
796 | ;; Use the state at the previous cache position, if any, or | |
797 | ;; otherwise calculate from `point-min'. | |
798 | (if (or (null font-lock-cache-position) | |
799 | (< start font-lock-cache-position)) | |
800 | (setq state (parse-partial-sexp (point-min) start)) | |
801 | (setq state (parse-partial-sexp font-lock-cache-position start | |
802 | nil nil font-lock-cache-state))) | |
803 | ;; Call the function to move outside any syntactic block. | |
804 | (funcall font-lock-beginning-of-syntax-function) | |
805 | (setq state (parse-partial-sexp (point) start))) | |
806 | ;; Cache the state and position of `start'. | |
807 | (setq font-lock-cache-state state | |
808 | font-lock-cache-position start)) | |
809 | ;; | |
810 | ;; If the region starts inside a string, show the extent of it. | |
811 | (if (nth 3 state) | |
812 | (let ((beg (point))) | |
813 | (while (and (re-search-forward "\\s\"" end 'move) | |
814 | (nth 3 (parse-partial-sexp beg (point) nil nil state)))) | |
815 | (put-text-property beg (point) 'face font-lock-string-face) | |
816 | (setq state (parse-partial-sexp beg (point) nil nil state)))) | |
817 | ;; | |
818 | ;; Likewise for a comment. | |
819 | (if (or (nth 4 state) (nth 7 state)) | |
820 | (let ((beg (point))) | |
821 | (save-restriction | |
822 | (narrow-to-region (point-min) end) | |
823 | (condition-case nil | |
824 | (progn | |
825 | (re-search-backward comstart (point-min) 'move) | |
826 | (forward-comment 1) | |
827 | ;; forward-comment skips all whitespace, | |
828 | ;; so go back to the real end of the comment. | |
829 | (skip-chars-backward " \t")) | |
830 | (error (goto-char end)))) | |
831 | (put-text-property beg (point) 'face font-lock-comment-face) | |
832 | (setq state (parse-partial-sexp beg (point) nil nil state)))) | |
833 | ;; | |
834 | ;; Find each interesting place between here and `end'. | |
835 | (while (and (< (point) end) | |
836 | (setq prev (point) prevstate state) | |
837 | (re-search-forward synstart end t) | |
838 | (progn | |
839 | ;; Clear out the fonts of what we skip over. | |
840 | (remove-text-properties prev (point) '(face nil)) | |
841 | ;; Verify the state at that place | |
842 | ;; so we don't get fooled by \" or \;. | |
843 | (setq state (parse-partial-sexp prev (point) | |
844 | nil nil state)))) | |
845 | (let ((here (point))) | |
846 | (if (or (nth 4 state) (nth 7 state)) | |
847 | ;; | |
848 | ;; We found a real comment start. | |
849 | (let ((beg (match-beginning 0))) | |
850 | (goto-char beg) | |
851 | (save-restriction | |
852 | (narrow-to-region (point-min) end) | |
853 | (condition-case nil | |
854 | (progn | |
855 | (forward-comment 1) | |
856 | ;; forward-comment skips all whitespace, | |
857 | ;; so go back to the real end of the comment. | |
858 | (skip-chars-backward " \t")) | |
859 | (error (goto-char end)))) | |
860 | (put-text-property beg (point) 'face font-lock-comment-face) | |
861 | (setq state (parse-partial-sexp here (point) nil nil state))) | |
862 | (if (nth 3 state) | |
876f2438 | 863 | ;; |
a078558d | 864 | ;; We found a real string start. |
876f2438 | 865 | (let ((beg (match-beginning 0))) |
a078558d SM |
866 | (while (and (re-search-forward "\\s\"" end 'move) |
867 | (nth 3 (parse-partial-sexp here (point) | |
868 | nil nil state)))) | |
869 | (put-text-property beg (point) 'face font-lock-string-face) | |
870 | (setq state (parse-partial-sexp here (point) | |
871 | nil nil state)))))) | |
872 | ;; | |
873 | ;; Make sure `prev' is non-nil after the loop | |
874 | ;; only if it was set on the very last iteration. | |
875 | (setq prev nil)) | |
876f2438 SM |
876 | ;; |
877 | ;; Clean up. | |
878 | (and prev (remove-text-properties prev end '(face nil))))) | |
9bfbb130 SM |
879 | \f |
880 | ;;; Additional text property functions. | |
881 | ||
882 | ;; The following three text property functions are not generally available (and | |
883 | ;; it's not certain that they should be) so they are inlined for speed. | |
884 | ;; The case for `fillin-text-property' is simple; it may or not be generally | |
885 | ;; useful. (Since it is used here, it is useful in at least one place.;-) | |
886 | ;; However, the case for `append-text-property' and `prepend-text-property' is | |
887 | ;; more complicated. Should they remove duplicate property values or not? If | |
888 | ;; so, should the first or last duplicate item remain? Or the one that was | |
889 | ;; added? In our implementation, the first duplicate remains. | |
890 | ||
891 | (defsubst font-lock-fillin-text-property (start end prop value &optional object) | |
892 | "Fill in one property of the text from START to END. | |
893 | Arguments PROP and VALUE specify the property and value to put where none are | |
894 | already in place. Therefore existing property values are not overwritten. | |
895 | Optional argument OBJECT is the string or buffer containing the text." | |
896 | (let ((start (text-property-any start end prop nil object)) next) | |
897 | (while start | |
898 | (setq next (next-single-property-change start prop object end)) | |
899 | (put-text-property start next prop value object) | |
900 | (setq start (text-property-any next end prop nil object))))) | |
901 | ||
902 | ;; This function (from simon's unique.el) is rewritten and inlined for speed. | |
903 | ;(defun unique (list function) | |
904 | ; "Uniquify LIST, deleting elements using FUNCTION. | |
905 | ;Return the list with subsequent duplicate items removed by side effects. | |
906 | ;FUNCTION is called with an element of LIST and a list of elements from LIST, | |
907 | ;and should return the list of elements with occurrences of the element removed, | |
908 | ;i.e., a function such as `delete' or `delq'. | |
909 | ;This function will work even if LIST is unsorted. See also `uniq'." | |
910 | ; (let ((list list)) | |
911 | ; (while list | |
912 | ; (setq list (setcdr list (funcall function (car list) (cdr list)))))) | |
913 | ; list) | |
914 | ||
915 | (defsubst font-lock-unique (list) | |
916 | "Uniquify LIST, deleting elements using `delq'. | |
917 | Return the list with subsequent duplicate items removed by side effects." | |
918 | (let ((list list)) | |
919 | (while list | |
920 | (setq list (setcdr list (delq (car list) (cdr list)))))) | |
921 | list) | |
922 | ||
923 | ;; A generalisation of `facemenu-add-face' for any property, but without the | |
924 | ;; removal of inactive faces via `facemenu-discard-redundant-faces' and special | |
925 | ;; treatment of `default'. Uses `unique' to remove duplicate property values. | |
926 | (defsubst font-lock-prepend-text-property (start end prop value &optional object) | |
927 | "Prepend to one property of the text from START to END. | |
928 | Arguments PROP and VALUE specify the property and value to prepend to the value | |
929 | already in place. The resulting property values are always lists, and unique. | |
930 | Optional argument OBJECT is the string or buffer containing the text." | |
931 | (let ((val (if (listp value) value (list value))) next prev) | |
932 | (while (/= start end) | |
933 | (setq next (next-single-property-change start prop object end) | |
934 | prev (get-text-property start prop object)) | |
935 | (put-text-property | |
936 | start next prop | |
937 | (font-lock-unique (append val (if (listp prev) prev (list prev)))) | |
938 | object) | |
939 | (setq start next)))) | |
940 | ||
941 | (defsubst font-lock-append-text-property (start end prop value &optional object) | |
942 | "Append to one property of the text from START to END. | |
943 | Arguments PROP and VALUE specify the property and value to append to the value | |
944 | already in place. The resulting property values are always lists, and unique. | |
945 | Optional argument OBJECT is the string or buffer containing the text." | |
946 | (let ((val (if (listp value) value (list value))) next prev) | |
947 | (while (/= start end) | |
948 | (setq next (next-single-property-change start prop object end) | |
949 | prev (get-text-property start prop object)) | |
950 | (put-text-property | |
951 | start next prop | |
952 | (font-lock-unique (append (if (listp prev) prev (list prev)) val)) | |
953 | object) | |
954 | (setq start next)))) | |
955 | \f | |
956 | ;;; Regexp fontification functions. | |
957 | ||
958 | (defsubst font-lock-apply-highlight (highlight) | |
959 | "Apply HIGHLIGHT following a match. | |
960 | HIGHLIGHT should be of the form MATCH-HIGHLIGHT, see `font-lock-keywords'." | |
961 | (let* ((match (nth 0 highlight)) | |
962 | (start (match-beginning match)) (end (match-end match)) | |
963 | (override (nth 2 highlight))) | |
964 | (cond ((not start) | |
965 | ;; No match but we might not signal an error. | |
966 | (or (nth 3 highlight) | |
967 | (error "No match %d in highlight %S" match highlight))) | |
968 | ((not override) | |
969 | ;; Cannot override existing fontification. | |
970 | (or (text-property-not-all start end 'face nil) | |
971 | (put-text-property start end 'face (eval (nth 1 highlight))))) | |
972 | ((eq override t) | |
973 | ;; Override existing fontification. | |
974 | (put-text-property start end 'face (eval (nth 1 highlight)))) | |
975 | ((eq override 'keep) | |
976 | ;; Keep existing fontification. | |
977 | (font-lock-fillin-text-property start end 'face | |
978 | (eval (nth 1 highlight)))) | |
979 | ((eq override 'prepend) | |
980 | ;; Prepend to existing fontification. | |
981 | (font-lock-prepend-text-property start end 'face | |
982 | (eval (nth 1 highlight)))) | |
983 | ((eq override 'append) | |
984 | ;; Append to existing fontification. | |
985 | (font-lock-append-text-property start end 'face | |
986 | (eval (nth 1 highlight))))))) | |
987 | ||
988 | (defsubst font-lock-fontify-anchored-keywords (keywords limit) | |
989 | "Fontify according to KEYWORDS until LIMIT. | |
990 | KEYWORDS should be of the form MATCH-ANCHORED, see `font-lock-keywords'." | |
991 | (let ((matcher (nth 0 keywords)) (lowdarks (nthcdr 3 keywords)) highlights) | |
876f2438 SM |
992 | ;; Until we come up with a cleaner solution, we make LIMIT the end of line. |
993 | (save-excursion (end-of-line) (setq limit (min limit (point)))) | |
994 | ;; Evaluate PRE-MATCH-FORM. | |
9bfbb130 SM |
995 | (eval (nth 1 keywords)) |
996 | (save-match-data | |
876f2438 | 997 | ;; Find an occurrence of `matcher' before `limit'. |
9bfbb130 SM |
998 | (while (if (stringp matcher) |
999 | (re-search-forward matcher limit t) | |
1000 | (funcall matcher limit)) | |
876f2438 | 1001 | ;; Apply each highlight to this instance of `matcher'. |
9bfbb130 SM |
1002 | (setq highlights lowdarks) |
1003 | (while highlights | |
1004 | (font-lock-apply-highlight (car highlights)) | |
1005 | (setq highlights (cdr highlights))))) | |
876f2438 | 1006 | ;; Evaluate POST-MATCH-FORM. |
9bfbb130 SM |
1007 | (eval (nth 2 keywords)))) |
1008 | ||
1009 | (defun font-lock-fontify-keywords-region (start end &optional loudly) | |
1010 | "Fontify according to `font-lock-keywords' between START and END. | |
1011 | START should be at the beginning of a line." | |
1012 | (let ((case-fold-search font-lock-keywords-case-fold-search) | |
1013 | (keywords (cdr (if (eq (car-safe font-lock-keywords) t) | |
1014 | font-lock-keywords | |
1015 | (font-lock-compile-keywords)))) | |
9bfbb130 | 1016 | (bufname (buffer-name)) (count 0) |
876f2438 SM |
1017 | keyword matcher highlights) |
1018 | ;; | |
1019 | ;; Fontify each item in `font-lock-keywords' from `start' to `end'. | |
1020 | (while keywords | |
1021 | (if loudly (message "Fontifying %s... (regexps..%s)" bufname | |
1022 | (make-string (setq count (1+ count)) ?.))) | |
9bfbb130 | 1023 | ;; |
876f2438 SM |
1024 | ;; Find an occurrence of `matcher' from `start' to `end'. |
1025 | (setq keyword (car keywords) matcher (car keyword)) | |
1026 | (goto-char start) | |
1027 | (while (if (stringp matcher) | |
1028 | (re-search-forward matcher end t) | |
1029 | (funcall matcher end)) | |
1030 | ;; Apply each highlight to this instance of `matcher', which may be | |
1031 | ;; specific highlights or more keywords anchored to `matcher'. | |
1032 | (setq highlights (cdr keyword)) | |
1033 | (while highlights | |
1034 | (if (numberp (car (car highlights))) | |
1035 | (font-lock-apply-highlight (car highlights)) | |
1036 | (font-lock-fontify-anchored-keywords (car highlights) end)) | |
1037 | (setq highlights (cdr highlights)))) | |
1038 | (setq keywords (cdr keywords))))) | |
9bfbb130 SM |
1039 | \f |
1040 | ;; Various functions. | |
1041 | ||
9bfbb130 SM |
1042 | (defun font-lock-compile-keywords (&optional keywords) |
1043 | ;; Compile `font-lock-keywords' into the form (t KEYWORD ...) where KEYWORD | |
1044 | ;; is the (MATCHER HIGHLIGHT ...) shown in the variable's doc string. | |
1045 | (let ((keywords (or keywords font-lock-keywords))) | |
1046 | (setq font-lock-keywords | |
a2b8e66b SM |
1047 | (if (eq (car-safe keywords) t) |
1048 | keywords | |
1049 | (cons t (mapcar 'font-lock-compile-keyword keywords)))))) | |
1050 | ||
1051 | (defun font-lock-compile-keyword (keyword) | |
1052 | (cond ((nlistp keyword) ; Just MATCHER | |
1053 | (list keyword '(0 font-lock-keyword-face))) | |
1054 | ((eq (car keyword) 'eval) ; Specified (eval . FORM) | |
1055 | (font-lock-compile-keyword (eval (cdr keyword)))) | |
1056 | ((numberp (cdr keyword)) ; Specified (MATCHER . MATCH) | |
1057 | (list (car keyword) (list (cdr keyword) 'font-lock-keyword-face))) | |
1058 | ((symbolp (cdr keyword)) ; Specified (MATCHER . FACENAME) | |
1059 | (list (car keyword) (list 0 (cdr keyword)))) | |
1060 | ((nlistp (nth 1 keyword)) ; Specified (MATCHER . HIGHLIGHT) | |
1061 | (list (car keyword) (cdr keyword))) | |
1062 | (t ; Hopefully (MATCHER HIGHLIGHT ...) | |
1063 | keyword))) | |
d46c21ec | 1064 | |
343204bd SM |
1065 | (defun font-lock-value-in-major-mode (alist) |
1066 | ;; Return value in ALIST for `major-mode', or ALIST if it is not an alist. | |
1067 | ;; Alist structure is ((MAJOR-MODE . VALUE)) where MAJOR-MODE may be t. | |
1068 | (if (consp alist) | |
1069 | (cdr (or (assq major-mode alist) (assq t alist))) | |
1070 | alist)) | |
1071 | ||
d46c21ec SM |
1072 | (defun font-lock-choose-keywords (keywords level) |
1073 | ;; Return LEVELth element of KEYWORDS. A LEVEL of nil is equal to a | |
1074 | ;; LEVEL of 0, a LEVEL of t is equal to (1- (length KEYWORDS)). | |
343204bd SM |
1075 | (cond ((symbolp keywords) |
1076 | keywords) | |
1077 | ((numberp level) | |
1078 | (or (nth level keywords) (car (reverse keywords)))) | |
1079 | ((eq level t) | |
1080 | (car (reverse keywords))) | |
1081 | (t | |
1082 | (car keywords)))) | |
d46c21ec SM |
1083 | |
1084 | (defun font-lock-set-defaults () | |
1085 | "Set fontification defaults appropriately for this mode. | |
a2b8e66b SM |
1086 | Sets various variables using `font-lock-defaults' (or, if nil, using |
1087 | `font-lock-defaults-alist') and `font-lock-maximum-decoration'." | |
d46c21ec SM |
1088 | ;; Set face defaults. |
1089 | (font-lock-make-faces) | |
1090 | ;; Set fontification defaults. | |
a2b8e66b | 1091 | (make-local-variable 'font-lock-fontified) |
2d9cdda8 SM |
1092 | (if (member font-lock-keywords '(nil (t))) |
1093 | (let* ((defaults (or font-lock-defaults | |
1094 | (cdr (assq major-mode font-lock-defaults-alist)))) | |
1095 | (keywords | |
1096 | (font-lock-choose-keywords (nth 0 defaults) | |
1097 | (font-lock-value-in-major-mode font-lock-maximum-decoration)))) | |
1098 | ;; Regexp fontification? | |
1099 | (setq font-lock-keywords (if (fboundp keywords) | |
1100 | (funcall keywords) | |
1101 | (eval keywords))) | |
1102 | ;; Syntactic fontification? | |
1103 | (if (nth 1 defaults) | |
1104 | (set (make-local-variable 'font-lock-keywords-only) t)) | |
1105 | ;; Case fold during regexp fontification? | |
1106 | (if (nth 2 defaults) | |
1107 | (set (make-local-variable 'font-lock-keywords-case-fold-search) t)) | |
1108 | ;; Syntax table for regexp and syntactic fontification? | |
1109 | (if (nth 3 defaults) | |
1110 | (let ((slist (nth 3 defaults))) | |
1111 | (set (make-local-variable 'font-lock-syntax-table) | |
1112 | (copy-syntax-table (syntax-table))) | |
1113 | (while slist | |
5aa29679 RS |
1114 | ;; The character to modify may be a single CHAR or a STRING. |
1115 | (let ((chars (if (numberp (car (car slist))) | |
1116 | (list (car (car slist))) | |
1117 | (mapcar 'identity (car (car slist))))) | |
1118 | (syntax (cdr (car slist)))) | |
1119 | (while chars | |
1120 | (modify-syntax-entry (car chars) syntax | |
1121 | font-lock-syntax-table) | |
1122 | (setq chars (cdr chars))) | |
1123 | (setq slist (cdr slist)))))) | |
2d9cdda8 SM |
1124 | ;; Syntax function for syntactic fontification? |
1125 | (if (nth 4 defaults) | |
1126 | (set (make-local-variable 'font-lock-beginning-of-syntax-function) | |
1127 | (nth 4 defaults))) | |
1128 | ;; Variable alist? | |
1129 | (let ((alist (nthcdr 5 defaults))) | |
1130 | (while alist | |
1131 | (set (make-local-variable (car (car alist))) (cdr (car alist))) | |
1132 | (setq alist (cdr alist))))))) | |
a2b8e66b SM |
1133 | |
1134 | (defun font-lock-unset-defaults () | |
1135 | "Unset fontification defaults. See `font-lock-set-defaults'." | |
1136 | (setq font-lock-keywords nil | |
1137 | font-lock-keywords-only nil | |
1138 | font-lock-keywords-case-fold-search nil | |
1139 | font-lock-syntax-table nil | |
a078558d SM |
1140 | font-lock-beginning-of-syntax-function nil) |
1141 | (let* ((defaults (or font-lock-defaults | |
1142 | (cdr (assq major-mode font-lock-defaults-alist)))) | |
1143 | (alist (nthcdr 5 defaults))) | |
1144 | (while alist | |
1145 | (set (car (car alist)) (default-value (car (car alist)))) | |
1146 | (setq alist (cdr alist))))) | |
030f4a35 | 1147 | \f |
9bfbb130 SM |
1148 | ;; Colour etc. support. |
1149 | ||
a078558d SM |
1150 | ;; This section of code is crying out for revision. |
1151 | ||
1152 | ;; To begin with, `display-type' and `background-mode' are `frame-parameters' | |
1153 | ;; so we don't have to calculate them here anymore. But all the face stuff | |
1154 | ;; should be frame-local (and thus display-local) anyway. Because we're not | |
1155 | ;; sure what support Emacs is going to have for general frame-local face | |
1156 | ;; attributes, we leave this section of code as it is. For now. --sm. | |
1157 | ||
9bfbb130 SM |
1158 | (defvar font-lock-display-type nil |
1159 | "A symbol indicating the display Emacs is running under. | |
1160 | The symbol should be one of `color', `grayscale' or `mono'. | |
1161 | If Emacs guesses this display attribute wrongly, either set this variable in | |
1162 | your `~/.emacs' or set the resource `Emacs.displayType' in your `~/.Xdefaults'. | |
1163 | See also `font-lock-background-mode' and `font-lock-face-attributes'.") | |
1164 | ||
1165 | (defvar font-lock-background-mode nil | |
1166 | "A symbol indicating the Emacs background brightness. | |
1167 | The symbol should be one of `light' or `dark'. | |
1168 | If Emacs guesses this frame attribute wrongly, either set this variable in | |
1169 | your `~/.emacs' or set the resource `Emacs.backgroundMode' in your | |
1170 | `~/.Xdefaults'. | |
1171 | See also `font-lock-display-type' and `font-lock-face-attributes'.") | |
1172 | ||
1173 | (defvar font-lock-face-attributes nil | |
1174 | "A list of default attributes to use for face attributes. | |
1175 | Each element of the list should be of the form | |
1176 | ||
1177 | (FACE FOREGROUND BACKGROUND BOLD-P ITALIC-P UNDERLINE-P) | |
1178 | ||
1179 | where FACE should be one of the face symbols `font-lock-comment-face', | |
1180 | `font-lock-string-face', `font-lock-keyword-face', `font-lock-type-face', | |
1181 | `font-lock-function-name-face', `font-lock-variable-name-face', and | |
1182 | `font-lock-reference-face'. A form for each of these face symbols should be | |
1183 | provided in the list, but other face symbols and attributes may be given and | |
1184 | used in highlighting. See `font-lock-keywords'. | |
1185 | ||
1186 | Subsequent element items should be the attributes for the corresponding | |
1187 | Font Lock mode faces. Attributes FOREGROUND and BACKGROUND should be strings | |
1188 | \(default if nil), while BOLD-P, ITALIC-P, and UNDERLINE-P should specify the | |
1189 | corresponding face attributes (yes if non-nil). | |
1190 | ||
1191 | Emacs uses default attributes based on display type and background brightness. | |
1192 | See variables `font-lock-display-type' and `font-lock-background-mode'. | |
1193 | ||
1194 | Resources can be used to over-ride these face attributes. For example, the | |
1195 | resource `Emacs.font-lock-comment-face.attributeUnderline' can be used to | |
1196 | specify the UNDERLINE-P attribute for face `font-lock-comment-face'.") | |
1197 | ||
1198 | (defun font-lock-make-faces (&optional override) | |
1199 | "Make faces from `font-lock-face-attributes'. | |
1200 | A default list is used if this is nil. | |
1201 | If optional OVERRIDE is non-nil, faces that already exist are reset. | |
1202 | See `font-lock-make-face' and `list-faces-display'." | |
1203 | ;; We don't need to `setq' any of these variables, but the user can see what | |
1204 | ;; is being used if we do. | |
1205 | (if (null font-lock-display-type) | |
1206 | (setq font-lock-display-type | |
1207 | (let ((display-resource (x-get-resource ".displayType" | |
1208 | "DisplayType"))) | |
1209 | (cond (display-resource (intern (downcase display-resource))) | |
1210 | ((x-display-color-p) 'color) | |
1211 | ((x-display-grayscale-p) 'grayscale) | |
1212 | (t 'mono))))) | |
1213 | (if (null font-lock-background-mode) | |
1214 | (setq font-lock-background-mode | |
1215 | (let ((bg-resource (x-get-resource ".backgroundMode" | |
1216 | "BackgroundMode")) | |
1217 | (params (frame-parameters))) | |
1218 | (cond (bg-resource (intern (downcase bg-resource))) | |
03a84c34 RS |
1219 | ((eq system-type 'ms-dos) |
1220 | (if (string-match "light" | |
1221 | (cdr (assq 'background-color params))) | |
1222 | 'light | |
1223 | 'dark)) | |
9bfbb130 SM |
1224 | ((< (apply '+ (x-color-values |
1225 | (cdr (assq 'background-color params)))) | |
f42b62e4 | 1226 | (* (apply '+ (x-color-values "white")) .6)) |
9bfbb130 SM |
1227 | 'dark) |
1228 | (t 'light))))) | |
1229 | (if (null font-lock-face-attributes) | |
1230 | (setq font-lock-face-attributes | |
1231 | (let ((light-bg (eq font-lock-background-mode 'light))) | |
1232 | (cond ((memq font-lock-display-type '(mono monochrome)) | |
1233 | ;; Emacs 19.25's font-lock defaults: | |
1234 | ;;'((font-lock-comment-face nil nil nil t nil) | |
1235 | ;; (font-lock-string-face nil nil nil nil t) | |
1236 | ;; (font-lock-keyword-face nil nil t nil nil) | |
1237 | ;; (font-lock-function-name-face nil nil t t nil) | |
1238 | ;; (font-lock-type-face nil nil nil t nil)) | |
1239 | (list '(font-lock-comment-face nil nil t t nil) | |
1240 | '(font-lock-string-face nil nil nil t nil) | |
1241 | '(font-lock-keyword-face nil nil t nil nil) | |
1242 | (list | |
1243 | 'font-lock-function-name-face | |
1244 | (cdr (assq 'background-color (frame-parameters))) | |
1245 | (cdr (assq 'foreground-color (frame-parameters))) | |
1246 | t nil nil) | |
1247 | '(font-lock-variable-name-face nil nil t t nil) | |
1248 | '(font-lock-type-face nil nil t nil t) | |
1249 | '(font-lock-reference-face nil nil t nil t))) | |
1250 | ((memq font-lock-display-type '(grayscale greyscale | |
1251 | grayshade greyshade)) | |
1252 | (list | |
1253 | (list 'font-lock-comment-face | |
1254 | nil (if light-bg "Gray80" "DimGray") t t nil) | |
1255 | (list 'font-lock-string-face | |
1256 | nil (if light-bg "Gray50" "LightGray") nil t nil) | |
1257 | (list 'font-lock-keyword-face | |
1258 | nil (if light-bg "Gray90" "DimGray") t nil nil) | |
1259 | (list 'font-lock-function-name-face | |
1260 | (cdr (assq 'background-color (frame-parameters))) | |
1261 | (cdr (assq 'foreground-color (frame-parameters))) | |
1262 | t nil nil) | |
1263 | (list 'font-lock-variable-name-face | |
1264 | nil (if light-bg "Gray90" "DimGray") t t nil) | |
1265 | (list 'font-lock-type-face | |
1266 | nil (if light-bg "Gray80" "DimGray") t nil t) | |
1267 | (list 'font-lock-reference-face | |
1268 | nil (if light-bg "LightGray" "Gray50") t nil t))) | |
1269 | (light-bg ; light colour background | |
1270 | '((font-lock-comment-face "Firebrick") | |
1271 | (font-lock-string-face "RosyBrown") | |
1272 | (font-lock-keyword-face "Purple") | |
1273 | (font-lock-function-name-face "Blue") | |
1274 | (font-lock-variable-name-face "DarkGoldenrod") | |
1275 | (font-lock-type-face "DarkOliveGreen") | |
1276 | (font-lock-reference-face "CadetBlue"))) | |
1277 | (t ; dark colour background | |
1278 | '((font-lock-comment-face "OrangeRed") | |
1279 | (font-lock-string-face "LightSalmon") | |
1280 | (font-lock-keyword-face "LightSteelBlue") | |
1281 | (font-lock-function-name-face "LightSkyBlue") | |
1282 | (font-lock-variable-name-face "LightGoldenrod") | |
1283 | (font-lock-type-face "PaleGreen") | |
1284 | (font-lock-reference-face "Aquamarine"))))))) | |
1285 | ;; Now make the faces if we have to. | |
1286 | (mapcar (function | |
1287 | (lambda (face-attributes) | |
1288 | (let ((face (nth 0 face-attributes))) | |
1289 | (cond (override | |
1290 | ;; We can stomp all over it anyway. Get outta my face! | |
1291 | (font-lock-make-face face-attributes)) | |
1292 | ((and (boundp face) (facep (symbol-value face))) | |
1293 | ;; The variable exists and is already bound to a face. | |
1294 | nil) | |
1295 | ((facep face) | |
1296 | ;; We already have a face so we bind the variable to it. | |
1297 | (set face face)) | |
1298 | (t | |
1299 | ;; No variable or no face. | |
1300 | (font-lock-make-face face-attributes)))))) | |
1301 | font-lock-face-attributes)) | |
1302 | ||
1303 | (defun font-lock-make-face (face-attributes) | |
1304 | "Make a face from FACE-ATTRIBUTES. | |
1305 | FACE-ATTRIBUTES should be like an element `font-lock-face-attributes', so that | |
1306 | the face name is the first item in the list. A variable with the same name as | |
1307 | the face is also set; its value is the face name." | |
1308 | (let* ((face (nth 0 face-attributes)) | |
1309 | (face-name (symbol-name face)) | |
1310 | (set-p (function (lambda (face-name resource) | |
1311 | (x-get-resource (concat face-name ".attribute" resource) | |
1312 | (concat "Face.Attribute" resource))))) | |
1313 | (on-p (function (lambda (face-name resource) | |
1314 | (let ((set (funcall set-p face-name resource))) | |
1315 | (and set (member (downcase set) '("on" "true")))))))) | |
1316 | (make-face face) | |
876f2438 | 1317 | (add-to-list 'facemenu-unlisted-faces face) |
9bfbb130 SM |
1318 | ;; Set attributes not set from X resources (and therefore `make-face'). |
1319 | (or (funcall set-p face-name "Foreground") | |
1320 | (condition-case nil | |
1321 | (set-face-foreground face (nth 1 face-attributes)) | |
1322 | (error nil))) | |
1323 | (or (funcall set-p face-name "Background") | |
1324 | (condition-case nil | |
1325 | (set-face-background face (nth 2 face-attributes)) | |
1326 | (error nil))) | |
1327 | (if (funcall set-p face-name "Bold") | |
1328 | (and (funcall on-p face-name "Bold") (make-face-bold face nil t)) | |
1329 | (and (nth 3 face-attributes) (make-face-bold face nil t))) | |
1330 | (if (funcall set-p face-name "Italic") | |
1331 | (and (funcall on-p face-name "Italic") (make-face-italic face nil t)) | |
1332 | (and (nth 4 face-attributes) (make-face-italic face nil t))) | |
1333 | (or (funcall set-p face-name "Underline") | |
1334 | (set-face-underline-p face (nth 5 face-attributes))) | |
1335 | (set face face))) | |
1336 | \f | |
1337 | ;;; Various regexp information shared by several modes. | |
a1eb1cf1 | 1338 | ;;; Information specific to a single mode should go in its load library. |
030f4a35 | 1339 | |
030f4a35 | 1340 | (defconst lisp-font-lock-keywords-1 |
a1eb1cf1 | 1341 | (list |
9bfbb130 | 1342 | ;; Anything not a variable or type declaration is fontified as a function. |
d46c21ec SM |
1343 | ;; It would be cleaner to allow preceding whitespace, but it would also be |
1344 | ;; about five times slower. | |
1345 | (list (concat "^(\\(def\\(" | |
1346 | ;; Variable declarations. | |
1347 | "\\(const\\(\\|ant\\)\\|ine-key\\(\\|-after\\)\\|var\\)\\|" | |
1348 | ;; Structure declarations. | |
1349 | "\\(class\\|struct\\|type\\)\\|" | |
1350 | ;; Everything else is a function declaration. | |
1351 | "\\([^ \t\n\(\)]+\\)" | |
1352 | "\\)\\)\\>" | |
1353 | ;; Any whitespace and declared object. | |
1354 | "[ \t'\(]*" | |
7d7d915a | 1355 | "\\(\\sw+\\)?") |
d46c21ec SM |
1356 | '(1 font-lock-keyword-face) |
1357 | '(8 (cond ((match-beginning 3) font-lock-variable-name-face) | |
1358 | ((match-beginning 6) font-lock-type-face) | |
1359 | (t font-lock-function-name-face)) | |
9bfbb130 SM |
1360 | nil t)) |
1361 | ) | |
7d7d915a | 1362 | "Subdued level highlighting for Lisp modes.") |
030f4a35 RS |
1363 | |
1364 | (defconst lisp-font-lock-keywords-2 | |
799761f0 | 1365 | (append lisp-font-lock-keywords-1 |
9bfbb130 SM |
1366 | (list |
1367 | ;; | |
1368 | ;; Control structures. ELisp and CLisp combined. | |
d46c21ec | 1369 | ; (make-regexp |
7d7d915a | 1370 | ; '("cond" "if" "while" "let\\*?" "prog[nv12*]?" "inline" "catch" "throw" |
d46c21ec SM |
1371 | ; "save-restriction" "save-excursion" "save-window-excursion" |
1372 | ; "save-selected-window" "save-match-data" "unwind-protect" | |
1373 | ; "condition-case" "track-mouse" | |
1374 | ; "eval-after-load" "eval-and-compile" "eval-when-compile" | |
a078558d SM |
1375 | ; "when" "unless" "do" "flet" "labels" "return" "return-from" |
1376 | ; "with-output-to-temp-buffer" "with-timeout")) | |
9bfbb130 SM |
1377 | (cons |
1378 | (concat | |
1379 | "(\\(" | |
a078558d | 1380 | "c\\(atch\\|ond\\(\\|ition-case\\)\\)\\|do\\|" |
9bfbb130 | 1381 | "eval-\\(a\\(fter-load\\|nd-compile\\)\\|when-compile\\)\\|flet\\|" |
7d7d915a | 1382 | "i\\(f\\|nline\\)\\|l\\(abels\\|et\\*?\\)\\|prog[nv12*]?\\|" |
a078558d SM |
1383 | "return\\(\\|-from\\)\\|save-\\(excursion\\|match-data\\|restriction\\|" |
1384 | "selected-window\\|window-excursion\\)\\|t\\(hrow\\|rack-mouse\\)\\|" | |
1385 | "un\\(less\\|wind-protect\\)\\|" | |
1386 | "w\\(h\\(en\\|ile\\)\\|ith-\\(output-to-temp-buffer\\|timeout\\)\\)" | |
9bfbb130 SM |
1387 | "\\)\\>") 1) |
1388 | ;; | |
7d7d915a SM |
1389 | ;; Feature symbols as references. |
1390 | '("(\\(featurep\\|provide\\|require\\)\\>[ \t']*\\(\\sw+\\)?" | |
1391 | (1 font-lock-keyword-face) (2 font-lock-reference-face nil t)) | |
1392 | ;; | |
9bfbb130 SM |
1393 | ;; Words inside \\[] tend to be for `substitute-command-keys'. |
1394 | '("\\\\\\\\\\[\\(\\sw+\\)]" 1 font-lock-reference-face prepend) | |
1395 | ;; | |
1396 | ;; Words inside `' tend to be symbol names. | |
1397 | '("`\\(\\sw\\sw+\\)'" 1 font-lock-reference-face prepend) | |
1398 | ;; | |
1399 | ;; CLisp `:' keywords as references. | |
1400 | '("\\<:\\sw+\\>" 0 font-lock-reference-face prepend) | |
1401 | ;; | |
1402 | ;; ELisp and CLisp `&' keywords as types. | |
343204bd | 1403 | '("\\<\\&\\sw+\\>" . font-lock-type-face) |
9bfbb130 | 1404 | )) |
fb512de9 | 1405 | "Gaudy level highlighting for Lisp modes.") |
030f4a35 | 1406 | |
fb512de9 SM |
1407 | (defvar lisp-font-lock-keywords lisp-font-lock-keywords-1 |
1408 | "Default expressions to highlight in Lisp modes.") | |
030f4a35 RS |
1409 | |
1410 | ||
d46c21ec | 1411 | (defvar scheme-font-lock-keywords |
9bfbb130 SM |
1412 | (eval-when-compile |
1413 | (list | |
1414 | ;; | |
1415 | ;; Declarations. Hannes Haug <hannes.haug@student.uni-tuebingen.de> says | |
1416 | ;; this works for SOS, STklos, SCOOPS, Meroon and Tiny CLOS. | |
1417 | (list (concat "(\\(define\\(" | |
1418 | ;; Function names. | |
1419 | "\\(\\|-\\(generic\\(\\|-procedure\\)\\|method\\)\\)\\|" | |
1420 | ;; Macro names, as variable names. A bit dubious, this. | |
1421 | "\\(-syntax\\)\\|" | |
1422 | ;; Class names. | |
1423 | "\\(-class\\)" | |
1424 | "\\)\\)\\>" | |
1425 | ;; Any whitespace and declared object. | |
1426 | "[ \t]*(?" | |
1427 | "\\(\\sw+\\)?") | |
1428 | '(1 font-lock-keyword-face) | |
1429 | '(8 (cond ((match-beginning 3) font-lock-function-name-face) | |
1430 | ((match-beginning 6) font-lock-variable-name-face) | |
1431 | (t font-lock-type-face)) | |
1432 | nil t)) | |
1433 | ;; | |
1434 | ;; Control structures. | |
d46c21ec SM |
1435 | ;(make-regexp '("begin" "call-with-current-continuation" "call/cc" |
1436 | ; "call-with-input-file" "call-with-output-file" "case" "cond" | |
9bfbb130 SM |
1437 | ; "do" "else" "for-each" "if" "lambda" |
1438 | ; "let\\*?" "let-syntax" "letrec" "letrec-syntax" | |
1439 | ; ;; Hannes Haug <hannes.haug@student.uni-tuebingen.de> wants: | |
1440 | ; "and" "or" "delay" | |
1441 | ; ;; Stefan Monnier <stefan.monnier@epfl.ch> says don't bother: | |
d46c21ec SM |
1442 | ; ;;"quasiquote" "quote" "unquote" "unquote-splicing" |
1443 | ; "map" "syntax" "syntax-rules")) | |
9bfbb130 SM |
1444 | (cons |
1445 | (concat "(\\(" | |
1446 | "and\\|begin\\|c\\(a\\(ll\\(-with-\\(current-continuation\\|" | |
1447 | "input-file\\|output-file\\)\\|/cc\\)\\|se\\)\\|ond\\)\\|" | |
1448 | "d\\(elay\\|o\\)\\|else\\|for-each\\|if\\|" | |
1449 | "l\\(ambda\\|et\\(-syntax\\|\\*?\\|rec\\(\\|-syntax\\)\\)\\)\\|" | |
1450 | "map\\|or\\|syntax\\(\\|-rules\\)" | |
1451 | "\\)\\>") 1) | |
1452 | ;; | |
1453 | ;; David Fox <fox@graphics.cs.nyu.edu> for SOS/STklos class specifiers. | |
1454 | '("\\<<\\sw+>\\>" . font-lock-type-face) | |
1455 | ;; | |
1456 | ;; Scheme `:' keywords as references. | |
1457 | '("\\<:\\sw+\\>" . font-lock-reference-face) | |
1458 | )) | |
1459 | "Default expressions to highlight in Scheme modes.") | |
d46c21ec SM |
1460 | |
1461 | ||
030f4a35 | 1462 | (defconst c-font-lock-keywords-1 nil |
fb512de9 | 1463 | "Subdued level highlighting for C modes.") |
030f4a35 RS |
1464 | |
1465 | (defconst c-font-lock-keywords-2 nil | |
9bfbb130 SM |
1466 | "Medium level highlighting for C modes.") |
1467 | ||
1468 | (defconst c-font-lock-keywords-3 nil | |
fb512de9 | 1469 | "Gaudy level highlighting for C modes.") |
030f4a35 | 1470 | |
1bd50840 | 1471 | (defconst c++-font-lock-keywords-1 nil |
fb512de9 | 1472 | "Subdued level highlighting for C++ modes.") |
1bd50840 RS |
1473 | |
1474 | (defconst c++-font-lock-keywords-2 nil | |
9bfbb130 SM |
1475 | "Medium level highlighting for C++ modes.") |
1476 | ||
1477 | (defconst c++-font-lock-keywords-3 nil | |
fb512de9 | 1478 | "Gaudy level highlighting for C++ modes.") |
1bd50840 | 1479 | |
9bfbb130 SM |
1480 | (defun font-lock-match-c++-style-declaration-item-and-skip-to-next (limit) |
1481 | ;; Match, and move over, any declaration/definition item after point. | |
1482 | ;; The expect syntax of an item is "word" or "word::word", possibly ending | |
1483 | ;; with optional whitespace and a "(". Everything following the item (but | |
1484 | ;; belonging to it) is expected to by skip-able by `forward-sexp', and items | |
1485 | ;; are expected to be separated with a "," or ";". | |
1486 | (if (looking-at "[ \t*&]*\\(\\sw+\\)\\(::\\(\\sw+\\)\\)?[ \t]*\\((\\)?") | |
1487 | (save-match-data | |
1488 | (condition-case nil | |
1489 | (save-restriction | |
876f2438 SM |
1490 | ;; Restrict to the end of line, currently guaranteed to be LIMIT. |
1491 | (narrow-to-region (point-min) limit) | |
9bfbb130 SM |
1492 | (goto-char (match-end 1)) |
1493 | ;; Move over any item value, etc., to the next item. | |
1494 | (while (not (looking-at "[ \t]*\\([,;]\\|$\\)")) | |
1495 | (goto-char (or (scan-sexps (point) 1) (point-max)))) | |
1496 | (goto-char (match-end 0))) | |
1497 | (error t))))) | |
1498 | ||
b89e1134 SM |
1499 | (let ((c-keywords |
1500 | ; ("break" "continue" "do" "else" "for" "if" "return" "switch" "while") | |
1501 | "break\\|continue\\|do\\|else\\|for\\|if\\|return\\|switch\\|while") | |
1502 | (c-type-types | |
a1eb1cf1 RS |
1503 | ; ("auto" "extern" "register" "static" "typedef" "struct" "union" "enum" |
1504 | ; "signed" "unsigned" "short" "long" "int" "char" "float" "double" | |
b89e1134 SM |
1505 | ; "void" "volatile" "const") |
1506 | (concat "auto\\|c\\(har\\|onst\\)\\|double\\|e\\(num\\|xtern\\)\\|" | |
1507 | "float\\|int\\|long\\|register\\|" | |
1508 | "s\\(hort\\|igned\\|t\\(atic\\|ruct\\)\\)\\|typedef\\|" | |
1509 | "un\\(ion\\|signed\\)\\|vo\\(id\\|latile\\)")) ; 6 ()s deep. | |
1510 | (c++-keywords | |
1511 | ; ("break" "continue" "do" "else" "for" "if" "return" "switch" "while" | |
1512 | ; "asm" "catch" "delete" "new" "operator" "sizeof" "this" "throw" "try" | |
1513 | ; "protected" "private" "public") | |
1514 | (concat "asm\\|break\\|c\\(atch\\|ontinue\\)\\|d\\(elete\\|o\\)\\|" | |
9bfbb130 | 1515 | "else\\|for\\|if\\|new\\|" |
b89e1134 SM |
1516 | "p\\(r\\(ivate\\|otected\\)\\|ublic\\)\\|return\\|" |
1517 | "s\\(izeof\\|witch\\)\\|t\\(h\\(is\\|row\\)\\|ry\\)\\|while")) | |
1518 | (c++-type-types | |
1519 | ; ("auto" "extern" "register" "static" "typedef" "struct" "union" "enum" | |
1520 | ; "signed" "unsigned" "short" "long" "int" "char" "float" "double" | |
1521 | ; "void" "volatile" "const" "class" "inline" "friend" "bool" | |
1522 | ; "virtual" "complex" "template") | |
1523 | (concat "auto\\|bool\\|c\\(har\\|lass\\|o\\(mplex\\|nst\\)\\)\\|" | |
1524 | "double\\|e\\(num\\|xtern\\)\\|f\\(loat\\|riend\\)\\|" | |
1525 | "in\\(line\\|t\\)\\|long\\|register\\|" | |
1526 | "s\\(hort\\|igned\\|t\\(atic\\|ruct\\)\\)\\|" | |
1527 | "t\\(emplate\\|ypedef\\)\\|un\\(ion\\|signed\\)\\|" | |
1528 | "v\\(irtual\\|o\\(id\\|latile\\)\\)")) ; 11 ()s deep. | |
9bfbb130 | 1529 | ) |
f60f18ae KH |
1530 | (setq c-font-lock-keywords-1 |
1531 | (list | |
f60f18ae | 1532 | ;; |
9bfbb130 SM |
1533 | ;; These are all anchored at the beginning of line for speed. |
1534 | ;; | |
1535 | ;; Fontify function name definitions (GNU style; without type on line). | |
1536 | (list (concat "^\\(\\sw+\\)[ \t]*(") 1 'font-lock-function-name-face) | |
1537 | ;; | |
1538 | ;; Fontify filenames in #include <...> preprocessor directives as strings. | |
f60f18ae KH |
1539 | '("^#[ \t]*include[ \t]+\\(<[^>\"\n]+>\\)" 1 font-lock-string-face) |
1540 | ;; | |
a1eb1cf1 | 1541 | ;; Fontify function macro names. |
7d7d915a | 1542 | '("^#[ \t]*define[ \t]+\\(\\sw+\\)(" 1 font-lock-function-name-face) |
f60f18ae | 1543 | ;; |
5aa29679 RS |
1544 | ;; Fontify symbol names in #elif or #if ... defined preprocessor directives. |
1545 | '("^#[ \t]*\\(elif\\|if\\)\\>" | |
9bfbb130 SM |
1546 | ("\\<\\(defined\\)\\>[ \t]*(?\\(\\sw+\\)?" nil nil |
1547 | (1 font-lock-reference-face) (2 font-lock-variable-name-face nil t))) | |
1548 | ;; | |
a1eb1cf1 | 1549 | ;; Fontify otherwise as symbol names, and the preprocessor directive names. |
7d7d915a | 1550 | '("^#[ \t]*\\(\\sw+\\)\\>[ \t]*\\(\\sw+\\)?" |
a1eb1cf1 | 1551 | (1 font-lock-reference-face) (2 font-lock-variable-name-face nil t)) |
f60f18ae KH |
1552 | )) |
1553 | ||
1554 | (setq c-font-lock-keywords-2 | |
1555 | (append c-font-lock-keywords-1 | |
030f4a35 | 1556 | (list |
030f4a35 | 1557 | ;; |
9bfbb130 | 1558 | ;; Simple regexps for speed. |
b89e1134 | 1559 | ;; |
9bfbb130 SM |
1560 | ;; Fontify all type specifiers. |
1561 | (cons (concat "\\<\\(" c-type-types "\\)\\>") 'font-lock-type-face) | |
030f4a35 | 1562 | ;; |
b89e1134 | 1563 | ;; Fontify all builtin keywords (except case, default and goto; see below). |
9bfbb130 | 1564 | (cons (concat "\\<\\(" c-keywords "\\)\\>") 'font-lock-keyword-face) |
030f4a35 | 1565 | ;; |
9bfbb130 | 1566 | ;; Fontify case/goto keywords and targets, and case default/goto tags. |
7d7d915a | 1567 | '("\\<\\(case\\|goto\\)\\>[ \t]*\\(\\sw+\\)?" |
a1eb1cf1 RS |
1568 | (1 font-lock-keyword-face) (2 font-lock-reference-face nil t)) |
1569 | '("^[ \t]*\\(\\sw+\\)[ \t]*:" 1 font-lock-reference-face) | |
f60f18ae | 1570 | ))) |
1bd50840 | 1571 | |
9bfbb130 SM |
1572 | (setq c-font-lock-keywords-3 |
1573 | (append c-font-lock-keywords-2 | |
1574 | ;; | |
1575 | ;; More complicated regexps for more complete highlighting for types. | |
1576 | ;; We still have to fontify type specifiers individually, as C is so hairy. | |
1577 | (list | |
1578 | ;; | |
1579 | ;; Fontify all storage classes and type specifiers, plus their items. | |
1580 | (list (concat "\\<\\(" c-type-types "\\)\\>" | |
1581 | "\\([ \t*&]+\\sw+\\>\\)*") | |
1582 | ;; Fontify each declaration item. | |
1583 | '(font-lock-match-c++-style-declaration-item-and-skip-to-next | |
1584 | ;; Start with point after all type specifiers. | |
1585 | (goto-char (or (match-beginning 8) (match-end 1))) | |
1586 | ;; Finish with point after first type specifier. | |
1587 | (goto-char (match-end 1)) | |
1588 | ;; Fontify as a variable or function name. | |
1589 | (1 (if (match-beginning 4) | |
1590 | font-lock-function-name-face | |
1591 | font-lock-variable-name-face)))) | |
1592 | ;; | |
1593 | ;; Fontify structures, or typedef names, plus their items. | |
1594 | '("\\(}\\)[ \t*]*\\sw" | |
1595 | (font-lock-match-c++-style-declaration-item-and-skip-to-next | |
1596 | (goto-char (match-end 1)) nil | |
1597 | (1 (if (match-beginning 4) | |
1598 | font-lock-function-name-face | |
1599 | font-lock-variable-name-face)))) | |
1600 | ;; | |
1601 | ;; Fontify anything at beginning of line as a declaration or definition. | |
1602 | '("^\\(\\sw+\\)\\>\\([ \t*]+\\sw+\\>\\)*" | |
1603 | (1 font-lock-type-face) | |
1604 | (font-lock-match-c++-style-declaration-item-and-skip-to-next | |
1605 | (goto-char (or (match-beginning 2) (match-end 1))) nil | |
1606 | (1 (if (match-beginning 4) | |
1607 | font-lock-function-name-face | |
1608 | font-lock-variable-name-face)))) | |
1609 | ))) | |
1610 | ||
1611 | (setq c++-font-lock-keywords-1 | |
1612 | (append | |
1613 | ;; | |
1614 | ;; The list `c-font-lock-keywords-1' less that for function names. | |
1615 | (cdr c-font-lock-keywords-1) | |
1616 | ;; | |
1617 | ;; Fontify function name definitions, possibly incorporating class name. | |
1618 | (list | |
1619 | '("^\\(\\sw+\\)\\(::\\(\\sw+\\)\\)?[ \t]*(" | |
1620 | (1 (if (match-beginning 2) | |
1621 | font-lock-type-face | |
1622 | font-lock-function-name-face)) | |
5aa29679 | 1623 | (3 font-lock-function-name-face nil t)) |
9bfbb130 SM |
1624 | ))) |
1625 | ||
1bd50840 | 1626 | (setq c++-font-lock-keywords-2 |
b89e1134 | 1627 | (append c++-font-lock-keywords-1 |
a1eb1cf1 | 1628 | (list |
9bfbb130 SM |
1629 | ;; |
1630 | ;; The list `c-font-lock-keywords-2' for C++ plus operator overloading. | |
b89e1134 | 1631 | (cons (concat "\\<\\(" c++-type-types "\\)\\>") 'font-lock-type-face) |
9bfbb130 SM |
1632 | ;; |
1633 | ;; Fontify operator function name overloading. | |
1634 | '("\\<\\(operator\\)\\>[ \t]*\\([][)(><!=+-][][)(><!=+-]?\\)?" | |
1635 | (1 font-lock-keyword-face) (2 font-lock-function-name-face nil t)) | |
1636 | ;; | |
1637 | ;; Fontify case/goto keywords and targets, and case default/goto tags. | |
7d7d915a | 1638 | '("\\<\\(case\\|goto\\)\\>[ \t]*\\(\\sw+\\)?" |
b89e1134 | 1639 | (1 font-lock-keyword-face) (2 font-lock-reference-face nil t)) |
9bfbb130 SM |
1640 | '("^[ \t]*\\(\\sw+\\)[ \t]*:[^:]" 1 font-lock-reference-face) |
1641 | ;; | |
1642 | ;; Fontify other builtin keywords. | |
1643 | (cons (concat "\\<\\(" c++-keywords "\\)\\>") 'font-lock-keyword-face) | |
1644 | ))) | |
1645 | ||
1646 | (setq c++-font-lock-keywords-3 | |
1647 | (append c++-font-lock-keywords-2 | |
1648 | ;; | |
1649 | ;; More complicated regexps for more complete highlighting for types. | |
1650 | (list | |
1651 | ;; | |
1652 | ;; Fontify all storage classes and type specifiers, plus their items. | |
1653 | (list (concat "\\<\\(" c++-type-types "\\)\\>" | |
1654 | "\\([ \t*&]+\\sw+\\>\\)*") | |
1655 | ;; Fontify each declaration item. | |
1656 | '(font-lock-match-c++-style-declaration-item-and-skip-to-next | |
1657 | ;; Start with point after all type specifiers. | |
1658 | (goto-char (or (match-beginning 13) (match-end 1))) | |
1659 | ;; Finish with point after first type specifier. | |
1660 | (goto-char (match-end 1)) | |
1661 | ;; Fontify as a variable or function name. | |
1662 | (1 (cond ((match-beginning 2) font-lock-type-face) | |
1663 | ((match-beginning 4) font-lock-function-name-face) | |
1664 | (t font-lock-variable-name-face))) | |
1665 | (3 (if (match-beginning 4) | |
1666 | font-lock-function-name-face | |
1667 | font-lock-variable-name-face) nil t))) | |
1668 | ;; | |
1669 | ;; Fontify structures, or typedef names, plus their items. | |
1670 | '("\\(}\\)[ \t*]*\\sw" | |
1671 | (font-lock-match-c++-style-declaration-item-and-skip-to-next | |
1672 | (goto-char (match-end 1)) nil | |
1673 | (1 (if (match-beginning 4) | |
1674 | font-lock-function-name-face | |
1675 | font-lock-variable-name-face)))) | |
1676 | ;; | |
1677 | ;; Fontify anything at beginning of line as a declaration or definition. | |
1678 | '("^\\(\\sw+\\)\\>\\([ \t*]+\\sw+\\>\\)*" | |
1679 | (1 font-lock-type-face) | |
1680 | (font-lock-match-c++-style-declaration-item-and-skip-to-next | |
1681 | (goto-char (or (match-beginning 2) (match-end 1))) nil | |
1682 | (1 (cond ((match-beginning 2) font-lock-type-face) | |
1683 | ((match-beginning 4) font-lock-function-name-face) | |
1684 | (t font-lock-variable-name-face))) | |
1685 | (3 (if (match-beginning 4) | |
1686 | font-lock-function-name-face | |
1687 | font-lock-variable-name-face) nil t))) | |
1688 | ))) | |
f60f18ae | 1689 | ) |
030f4a35 | 1690 | |
fb512de9 SM |
1691 | (defvar c-font-lock-keywords c-font-lock-keywords-1 |
1692 | "Default expressions to highlight in C mode.") | |
030f4a35 | 1693 | |
fb512de9 SM |
1694 | (defvar c++-font-lock-keywords c++-font-lock-keywords-1 |
1695 | "Default expressions to highlight in C++ mode.") | |
030f4a35 | 1696 | |
d46c21ec | 1697 | |
030f4a35 | 1698 | (defvar tex-font-lock-keywords |
d46c21ec SM |
1699 | ; ;; Regexps updated with help from Ulrik Dickow <dickow@nbi.dk>. |
1700 | ; '(("\\\\\\(begin\\|end\\|newcommand\\){\\([a-zA-Z0-9\\*]+\\)}" | |
1701 | ; 2 font-lock-function-name-face) | |
1702 | ; ("\\\\\\(cite\\|label\\|pageref\\|ref\\){\\([^} \t\n]+\\)}" | |
1703 | ; 2 font-lock-reference-face) | |
1704 | ; ;; It seems a bit dubious to use `bold' and `italic' faces since we might | |
1705 | ; ;; not be able to display those fonts. | |
1706 | ; ("{\\\\bf\\([^}]+\\)}" 1 'bold keep) | |
1707 | ; ("{\\\\\\(em\\|it\\|sl\\)\\([^}]+\\)}" 2 'italic keep) | |
1708 | ; ("\\\\\\([a-zA-Z@]+\\|.\\)" . font-lock-keyword-face) | |
1709 | ; ("^[ \t\n]*\\\\def[\\\\@]\\(\\w+\\)" 1 font-lock-function-name-face keep)) | |
1710 | ;; Rewritten and extended for LaTeX2e by Ulrik Dickow <dickow@nbi.dk>. | |
826b2925 SM |
1711 | '(("\\\\\\(begin\\|end\\|newcommand\\){\\([a-zA-Z0-9\\*]+\\)}" |
1712 | 2 font-lock-function-name-face) | |
1713 | ("\\\\\\(cite\\|label\\|pageref\\|ref\\){\\([^} \t\n]+\\)}" | |
1714 | 2 font-lock-reference-face) | |
d46c21ec | 1715 | ("^[ \t]*\\\\def\\\\\\(\\(\\w\\|@\\)+\\)" 1 font-lock-function-name-face) |
9bfbb130 | 1716 | "\\\\\\([a-zA-Z@]+\\|.\\)" |
826b2925 SM |
1717 | ;; It seems a bit dubious to use `bold' and `italic' faces since we might |
1718 | ;; not be able to display those fonts. | |
d46c21ec SM |
1719 | ;; LaTeX2e: \emph{This is emphasized}. |
1720 | ("\\\\emph{\\([^}]+\\)}" 1 'italic keep) | |
1721 | ;; LaTeX2e: \textbf{This is bold}, \textit{...}, \textsl{...} | |
1722 | ("\\\\text\\(\\(bf\\)\\|it\\|sl\\){\\([^}]+\\)}" | |
1723 | 3 (if (match-beginning 2) 'bold 'italic) keep) | |
1724 | ;; Old-style bf/em/it/sl. Stop at `\\' and un-escaped `&', for good tables. | |
1725 | ("\\\\\\(\\(bf\\)\\|em\\|it\\|sl\\)\\>\\(\\([^}&\\]\\|\\\\[^\\]\\)+\\)" | |
1726 | 3 (if (match-beginning 2) 'bold 'italic) keep)) | |
9bfbb130 | 1727 | "Default expressions to highlight in TeX modes.") |
d46c21ec | 1728 | \f |
a1eb1cf1 RS |
1729 | ;; Install ourselves: |
1730 | ||
5aa29679 RS |
1731 | (unless (assq 'font-lock-mode minor-mode-alist) |
1732 | (setq minor-mode-alist (cons '(font-lock-mode " Font") minor-mode-alist))) | |
a1eb1cf1 RS |
1733 | |
1734 | ;; Provide ourselves: | |
8f261d40 | 1735 | |
030f4a35 RS |
1736 | (provide 'font-lock) |
1737 | ||
1738 | ;;; font-lock.el ends here |