| 1 | ;;; font-lock.el --- Electric font lock mode |
| 2 | |
| 3 | ;; Copyright (C) 1992-1999 Free Software Foundation, Inc. |
| 4 | |
| 5 | ;; Author: jwz, then rms, then sm <simon@gnu.org> |
| 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 |
| 22 | ;; along with GNU Emacs; see the file COPYING. If not, write to the |
| 23 | ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
| 24 | ;; Boston, MA 02111-1307, USA. |
| 25 | |
| 26 | ;;; Commentary: |
| 27 | |
| 28 | ;; 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. |
| 30 | ;; |
| 31 | ;; Comments will be displayed in `font-lock-comment-face'. |
| 32 | ;; Strings will be displayed in `font-lock-string-face'. |
| 33 | ;; Regexps are used to display selected patterns in other faces. |
| 34 | ;; |
| 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. |
| 38 | ;; |
| 39 | ;; To turn Font Lock mode on automatically, add this to your ~/.emacs file: |
| 40 | ;; |
| 41 | ;; (add-hook 'emacs-lisp-mode-hook 'turn-on-font-lock) |
| 42 | ;; |
| 43 | ;; Or if you want to turn Font Lock mode on in many modes: |
| 44 | ;; |
| 45 | ;; (global-font-lock-mode t) |
| 46 | ;; |
| 47 | ;; Fontification for a particular mode may be available in a number of levels |
| 48 | ;; of decoration. The higher the level, the more decoration, but the more time |
| 49 | ;; it takes to fontify. See the variable `font-lock-maximum-decoration', and |
| 50 | ;; also the variable `font-lock-maximum-size'. Support modes for Font Lock |
| 51 | ;; mode can be used to speed up Font Lock mode. See `font-lock-support-mode'. |
| 52 | \f |
| 53 | ;;; How Font Lock mode fontifies: |
| 54 | |
| 55 | ;; When Font Lock mode is turned on in a buffer, it (a) fontifies the entire |
| 56 | ;; buffer and (b) installs one of its fontification functions on one of the |
| 57 | ;; hook variables that are run by Emacs after every buffer change (i.e., an |
| 58 | ;; insertion or deletion). Fontification means the replacement of `face' text |
| 59 | ;; properties in a given region; Emacs displays text with these `face' text |
| 60 | ;; properties appropriately. |
| 61 | ;; |
| 62 | ;; Fontification normally involves syntactic (i.e., strings and comments) and |
| 63 | ;; regexp (i.e., keywords and everything else) passes. There are actually |
| 64 | ;; three passes; (a) the syntactic keyword pass, (b) the syntactic pass and (c) |
| 65 | ;; the keyword pass. Confused? |
| 66 | ;; |
| 67 | ;; The syntactic keyword pass places `syntax-table' text properties in the |
| 68 | ;; buffer according to the variable `font-lock-syntactic-keywords'. It is |
| 69 | ;; necessary because Emacs' syntax table is not powerful enough to describe all |
| 70 | ;; the different syntactic constructs required by the sort of people who decide |
| 71 | ;; that a single quote can be syntactic or not depending on the time of day. |
| 72 | ;; (What sort of person could decide to overload the meaning of a quote?) |
| 73 | ;; Obviously the syntactic keyword pass must occur before the syntactic pass. |
| 74 | ;; |
| 75 | ;; The syntactic pass places `face' text properties in the buffer according to |
| 76 | ;; syntactic context, i.e., according to the buffer's syntax table and buffer |
| 77 | ;; text's `syntax-table' text properties. It involves using a syntax parsing |
| 78 | ;; function to determine the context of different parts of a region of text. A |
| 79 | ;; syntax parsing function is necessary because generally strings and/or |
| 80 | ;; comments can span lines, and so the context of a given region is not |
| 81 | ;; necessarily apparent from the content of that region. Because the keyword |
| 82 | ;; pass only works within a given region, it is not generally appropriate for |
| 83 | ;; syntactic fontification. This is the first fontification pass that makes |
| 84 | ;; changes visible to the user; it fontifies strings and comments. |
| 85 | ;; |
| 86 | ;; The keyword pass places `face' text properties in the buffer according to |
| 87 | ;; the variable `font-lock-keywords'. It involves searching for given regexps |
| 88 | ;; (or calling given search functions) within the given region. This is the |
| 89 | ;; second fontification pass that makes changes visible to the user; it |
| 90 | ;; fontifies language reserved words, etc. |
| 91 | ;; |
| 92 | ;; Oh, and the answer is, "Yes, obviously just about everything should be done |
| 93 | ;; in a single syntactic pass, but the only syntactic parser available |
| 94 | ;; understands only strings and comments." Perhaps one day someone will write |
| 95 | ;; some syntactic parsers for common languages and a son-of-font-lock.el could |
| 96 | ;; use them rather then relying so heavily on the keyword (regexp) pass. |
| 97 | |
| 98 | ;;; How Font Lock mode supports modes or is supported by modes: |
| 99 | |
| 100 | ;; Modes that support Font Lock mode do so by defining one or more variables |
| 101 | ;; whose values specify the fontification. Font Lock mode knows of these |
| 102 | ;; variable names from (a) the buffer local variable `font-lock-defaults', if |
| 103 | ;; non-nil, or (b) the global variable `font-lock-defaults-alist', if the major |
| 104 | ;; mode has an entry. (Font Lock mode is set up via (a) where a mode's |
| 105 | ;; patterns are distributed with the mode's package library, and (b) where a |
| 106 | ;; mode's patterns are distributed with font-lock.el itself. An example of (a) |
| 107 | ;; is Pascal mode, an example of (b) is Lisp mode. Normally, the mechanism is |
| 108 | ;; (a); (b) is used where it is not clear which package library should contain |
| 109 | ;; the pattern definitions.) Font Lock mode chooses which variable to use for |
| 110 | ;; fontification based on `font-lock-maximum-decoration'. |
| 111 | ;; |
| 112 | ;; Font Lock mode fontification behaviour can be modified in a number of ways. |
| 113 | ;; See the below comments and the comments distributed throughout this file. |
| 114 | |
| 115 | ;;; Constructing patterns: |
| 116 | |
| 117 | ;; See the documentation for the variable `font-lock-keywords'. |
| 118 | ;; |
| 119 | ;; Efficient regexps for use as MATCHERs for `font-lock-keywords' and |
| 120 | ;; `font-lock-syntactic-keywords' can be generated via the function |
| 121 | ;; `regexp-opt', and their depth counted via the function `regexp-opt-depth'. |
| 122 | |
| 123 | ;;; Adding patterns for modes that already support Font Lock: |
| 124 | |
| 125 | ;; Though Font Lock highlighting patterns already exist for many modes, it's |
| 126 | ;; likely there's something that you want fontified that currently isn't, even |
| 127 | ;; at the maximum fontification level. You can add highlighting patterns via |
| 128 | ;; `font-lock-add-keywords'. For example, say in some C |
| 129 | ;; header file you #define the token `and' to expand to `&&', etc., to make |
| 130 | ;; your C code almost readable. In your ~/.emacs there could be: |
| 131 | ;; |
| 132 | ;; (font-lock-add-keywords 'c-mode '("\\<\\(and\\|or\\|not\\)\\>")) |
| 133 | ;; |
| 134 | ;; Some modes provide specific ways to modify patterns based on the values of |
| 135 | ;; other variables. For example, additional C types can be specified via the |
| 136 | ;; variable `c-font-lock-extra-types'. |
| 137 | |
| 138 | ;;; Adding patterns for modes that do not support Font Lock: |
| 139 | |
| 140 | ;; Not all modes support Font Lock mode. If you (as a user of the mode) add |
| 141 | ;; patterns for a new mode, you must define in your ~/.emacs a variable or |
| 142 | ;; variables that specify regexp fontification. Then, you should indicate to |
| 143 | ;; Font Lock mode, via the mode hook setting `font-lock-defaults', exactly what |
| 144 | ;; support is required. For example, say Foo mode should have the following |
| 145 | ;; regexps fontified case-sensitively, and comments and strings should not be |
| 146 | ;; fontified automagically. In your ~/.emacs there could be: |
| 147 | ;; |
| 148 | ;; (defvar foo-font-lock-keywords |
| 149 | ;; '(("\\<\\(one\\|two\\|three\\)\\>" . font-lock-keyword-face) |
| 150 | ;; ("\\<\\(four\\|five\\|six\\)\\>" . font-lock-type-face)) |
| 151 | ;; "Default expressions to highlight in Foo mode.") |
| 152 | ;; |
| 153 | ;; (add-hook 'foo-mode-hook |
| 154 | ;; (function (lambda () |
| 155 | ;; (make-local-variable 'font-lock-defaults) |
| 156 | ;; (setq font-lock-defaults '(foo-font-lock-keywords t))))) |
| 157 | |
| 158 | ;;; Adding Font Lock support for modes: |
| 159 | |
| 160 | ;; Of course, it would be better that the mode already supports Font Lock mode. |
| 161 | ;; The package author would do something similar to above. The mode must |
| 162 | ;; define at the top-level a variable or variables that specify regexp |
| 163 | ;; fontification. Then, the mode command should indicate to Font Lock mode, |
| 164 | ;; via `font-lock-defaults', exactly what support is required. For example, |
| 165 | ;; say Bar mode should have the following regexps fontified case-insensitively, |
| 166 | ;; and comments and strings should be fontified automagically. In bar.el there |
| 167 | ;; could be: |
| 168 | ;; |
| 169 | ;; (defvar bar-font-lock-keywords |
| 170 | ;; '(("\\<\\(uno\\|due\\|tre\\)\\>" . font-lock-keyword-face) |
| 171 | ;; ("\\<\\(quattro\\|cinque\\|sei\\)\\>" . font-lock-type-face)) |
| 172 | ;; "Default expressions to highlight in Bar mode.") |
| 173 | ;; |
| 174 | ;; and within `bar-mode' there could be: |
| 175 | ;; |
| 176 | ;; (make-local-variable 'font-lock-defaults) |
| 177 | ;; (setq font-lock-defaults '(bar-font-lock-keywords nil t)) |
| 178 | \f |
| 179 | ;; What is fontification for? You might say, "It's to make my code look nice." |
| 180 | ;; I think it should be for adding information in the form of cues. These cues |
| 181 | ;; should provide you with enough information to both (a) distinguish between |
| 182 | ;; different items, and (b) identify the item meanings, without having to read |
| 183 | ;; the items and think about it. Therefore, fontification allows you to think |
| 184 | ;; less about, say, the structure of code, and more about, say, why the code |
| 185 | ;; doesn't work. Or maybe it allows you to think less and drift off to sleep. |
| 186 | ;; |
| 187 | ;; So, here are my opinions/advice/guidelines: |
| 188 | ;; |
| 189 | ;; - Highlight conceptual objects, such as function and variable names, and |
| 190 | ;; different objects types differently, i.e., (a) and (b) above, highlight |
| 191 | ;; function names differently to variable names. |
| 192 | ;; - Keep the faces distinct from each other as far as possible. |
| 193 | ;; i.e., (a) above. |
| 194 | ;; - Use the same face for the same conceptual object, across all modes. |
| 195 | ;; i.e., (b) above, all modes that have items that can be thought of as, say, |
| 196 | ;; keywords, should be highlighted with the same face, etc. |
| 197 | ;; - Make the face attributes fit the concept as far as possible. |
| 198 | ;; i.e., function names might be a bold colour such as blue, comments might |
| 199 | ;; be a bright colour such as red, character strings might be brown, because, |
| 200 | ;; err, strings are brown (that was not the reason, please believe me). |
| 201 | ;; - Don't use a non-nil OVERRIDE unless you have a good reason. |
| 202 | ;; Only use OVERRIDE for special things that are easy to define, such as the |
| 203 | ;; way `...' quotes are treated in strings and comments in Emacs Lisp mode. |
| 204 | ;; Don't use it to, say, highlight keywords in commented out code or strings. |
| 205 | ;; - Err, that's it. |
| 206 | \f |
| 207 | ;;; Code: |
| 208 | |
| 209 | ;; Define core `font-lock' group. |
| 210 | (defgroup font-lock nil |
| 211 | "Font Lock mode text highlighting package." |
| 212 | :link '(custom-manual "(emacs)Font Lock") |
| 213 | :group 'faces) |
| 214 | |
| 215 | (defgroup font-lock-highlighting-faces nil |
| 216 | "Faces for highlighting text." |
| 217 | :prefix "font-lock-" |
| 218 | :group 'font-lock) |
| 219 | |
| 220 | (defgroup font-lock-extra-types nil |
| 221 | "Extra mode-specific type names for highlighting declarations." |
| 222 | :group 'font-lock) |
| 223 | |
| 224 | ;; Define support mode groups here to impose `font-lock' group order. |
| 225 | (defgroup fast-lock nil |
| 226 | "Font Lock support mode to cache fontification." |
| 227 | :link '(custom-manual "(emacs)Support Modes") |
| 228 | :load 'fast-lock |
| 229 | :group 'font-lock) |
| 230 | |
| 231 | (defgroup lazy-lock nil |
| 232 | "Font Lock support mode to fontify lazily." |
| 233 | :link '(custom-manual "(emacs)Support Modes") |
| 234 | :load 'lazy-lock |
| 235 | :group 'font-lock) |
| 236 | \f |
| 237 | ;; User variables. |
| 238 | |
| 239 | (defcustom font-lock-maximum-size 256000 |
| 240 | "*Maximum size of a buffer for buffer fontification. |
| 241 | Only buffers less than this can be fontified when Font Lock mode is turned on. |
| 242 | If nil, means size is irrelevant. |
| 243 | If a list, each element should be a cons pair of the form (MAJOR-MODE . SIZE), |
| 244 | where MAJOR-MODE is a symbol or t (meaning the default). For example: |
| 245 | ((c-mode . 256000) (c++-mode . 256000) (rmail-mode . 1048576)) |
| 246 | means that the maximum size is 250K for buffers in C or C++ modes, one megabyte |
| 247 | for buffers in Rmail mode, and size is irrelevant otherwise." |
| 248 | :type '(choice (const :tag "none" nil) |
| 249 | (integer :tag "size") |
| 250 | (repeat :menu-tag "mode specific" :tag "mode specific" |
| 251 | :value ((t . nil)) |
| 252 | (cons :tag "Instance" |
| 253 | (radio :tag "Mode" |
| 254 | (const :tag "all" t) |
| 255 | (symbol :tag "name")) |
| 256 | (radio :tag "Size" |
| 257 | (const :tag "none" nil) |
| 258 | (integer :tag "size"))))) |
| 259 | :group 'font-lock) |
| 260 | |
| 261 | (defcustom font-lock-maximum-decoration t |
| 262 | "*Maximum decoration level for fontification. |
| 263 | If nil, use the default decoration (typically the minimum available). |
| 264 | If t, use the maximum decoration available. |
| 265 | If a number, use that level of decoration (or if not available the maximum). |
| 266 | If a list, each element should be a cons pair of the form (MAJOR-MODE . LEVEL), |
| 267 | where MAJOR-MODE is a symbol or t (meaning the default). For example: |
| 268 | ((c-mode . t) (c++-mode . 2) (t . 1)) |
| 269 | means use the maximum decoration available for buffers in C mode, level 2 |
| 270 | decoration for buffers in C++ mode, and level 1 decoration otherwise." |
| 271 | :type '(choice (const :tag "default" nil) |
| 272 | (const :tag "maximum" t) |
| 273 | (integer :tag "level" 1) |
| 274 | (repeat :menu-tag "mode specific" :tag "mode specific" |
| 275 | :value ((t . t)) |
| 276 | (cons :tag "Instance" |
| 277 | (radio :tag "Mode" |
| 278 | (const :tag "all" t) |
| 279 | (symbol :tag "name")) |
| 280 | (radio :tag "Decoration" |
| 281 | (const :tag "default" nil) |
| 282 | (const :tag "maximum" t) |
| 283 | (integer :tag "level" 1))))) |
| 284 | :group 'font-lock) |
| 285 | |
| 286 | (defcustom font-lock-verbose 0 |
| 287 | "*If non-nil, means show status messages for buffer fontification. |
| 288 | If a number, only buffers greater than this size have fontification messages." |
| 289 | :type '(choice (const :tag "never" nil) |
| 290 | (other :tag "always" t) |
| 291 | (integer :tag "size")) |
| 292 | :group 'font-lock) |
| 293 | \f |
| 294 | ;; Fontification variables: |
| 295 | |
| 296 | (defvar font-lock-keywords nil |
| 297 | "A list of the keywords to highlight. |
| 298 | Each element should have one of these forms: |
| 299 | |
| 300 | MATCHER |
| 301 | (MATCHER . MATCH) |
| 302 | (MATCHER . FACENAME) |
| 303 | (MATCHER . HIGHLIGHT) |
| 304 | (MATCHER HIGHLIGHT ...) |
| 305 | (eval . FORM) |
| 306 | |
| 307 | where HIGHLIGHT should be either MATCH-HIGHLIGHT or MATCH-ANCHORED. |
| 308 | |
| 309 | FORM is an expression, whose value should be a keyword element, evaluated when |
| 310 | the keyword is (first) used in a buffer. This feature can be used to provide a |
| 311 | keyword that can only be generated when Font Lock mode is actually turned on. |
| 312 | |
| 313 | For highlighting single items, for example each instance of the word \"foo\", |
| 314 | typically only MATCH-HIGHLIGHT is required. |
| 315 | However, if an item or (typically) items are to be highlighted following the |
| 316 | instance of another item (the anchor), for example each instance of the |
| 317 | word \"bar\" following the word \"anchor\" then MATCH-ANCHORED may be required. |
| 318 | |
| 319 | MATCH-HIGHLIGHT should be of the form: |
| 320 | |
| 321 | (MATCH FACENAME OVERRIDE LAXMATCH) |
| 322 | |
| 323 | where MATCHER can be either the regexp to search for, or the function name to |
| 324 | call to make the search (called with one argument, the limit of the search) and |
| 325 | return non-nil if it succeeds (and set `match-data' appropriately). |
| 326 | MATCHER regexps can be generated via the function `regexp-opt'. MATCH is the |
| 327 | subexpression of MATCHER to be highlighted. MATCH can be calculated via the |
| 328 | function `regexp-opt-depth'. FACENAME is an expression whose value is the face |
| 329 | name to use. Face default attributes can be modified via \\[customize]. |
| 330 | |
| 331 | OVERRIDE and LAXMATCH are flags. If OVERRIDE is t, existing fontification can |
| 332 | be overwritten. If `keep', only parts not already fontified are highlighted. |
| 333 | If `prepend' or `append', existing fontification is merged with the new, in |
| 334 | which the new or existing fontification, respectively, takes precedence. |
| 335 | If LAXMATCH is non-nil, no error is signaled if there is no MATCH in MATCHER. |
| 336 | |
| 337 | For example, an element of the form highlights (if not already highlighted): |
| 338 | |
| 339 | \"\\\\\\=<foo\\\\\\=>\" discrete occurrences of \"foo\" in the value of the |
| 340 | variable `font-lock-keyword-face'. |
| 341 | (\"fu\\\\(bar\\\\)\" . 1) substring \"bar\" within all occurrences of \"fubar\" in |
| 342 | the value of `font-lock-keyword-face'. |
| 343 | (\"fubar\" . fubar-face) Occurrences of \"fubar\" in the value of `fubar-face'. |
| 344 | (\"foo\\\\|bar\" 0 foo-bar-face t) |
| 345 | occurrences of either \"foo\" or \"bar\" in the value |
| 346 | of `foo-bar-face', even if already highlighted. |
| 347 | (fubar-match 1 fubar-face) |
| 348 | the first subexpression within all occurrences of |
| 349 | whatever the function `fubar-match' finds and matches |
| 350 | in the value of `fubar-face'. |
| 351 | |
| 352 | MATCH-ANCHORED should be of the form: |
| 353 | |
| 354 | (MATCHER PRE-MATCH-FORM POST-MATCH-FORM MATCH-HIGHLIGHT ...) |
| 355 | |
| 356 | where MATCHER is a regexp to search for or the function name to call to make |
| 357 | the search, as for MATCH-HIGHLIGHT above, but with one exception; see below. |
| 358 | PRE-MATCH-FORM and POST-MATCH-FORM are evaluated before the first, and after |
| 359 | the last, instance MATCH-ANCHORED's MATCHER is used. Therefore they can be |
| 360 | used to initialise before, and cleanup after, MATCHER is used. Typically, |
| 361 | PRE-MATCH-FORM is used to move to some position relative to the original |
| 362 | MATCHER, before starting with MATCH-ANCHORED's MATCHER. POST-MATCH-FORM might |
| 363 | be used to move, before resuming with MATCH-ANCHORED's parent's MATCHER. |
| 364 | |
| 365 | For example, an element of the form highlights (if not already highlighted): |
| 366 | |
| 367 | (\"\\\\\\=<anchor\\\\\\=>\" (0 anchor-face) (\"\\\\\\=<item\\\\\\=>\" nil nil (0 item-face))) |
| 368 | |
| 369 | discrete occurrences of \"anchor\" in the value of `anchor-face', and subsequent |
| 370 | discrete occurrences of \"item\" (on the same line) in the value of `item-face'. |
| 371 | (Here PRE-MATCH-FORM and POST-MATCH-FORM are nil. Therefore \"item\" is |
| 372 | initially searched for starting from the end of the match of \"anchor\", and |
| 373 | searching for subsequent instance of \"anchor\" resumes from where searching |
| 374 | for \"item\" concluded.) |
| 375 | |
| 376 | The above-mentioned exception is as follows. The limit of the MATCHER search |
| 377 | defaults to the end of the line after PRE-MATCH-FORM is evaluated. |
| 378 | However, if PRE-MATCH-FORM returns a position greater than the position after |
| 379 | PRE-MATCH-FORM is evaluated, that position is used as the limit of the search. |
| 380 | It is generally a bad idea to return a position greater than the end of the |
| 381 | line, i.e., cause the MATCHER search to span lines. |
| 382 | |
| 383 | These regular expressions should not match text which spans lines. While |
| 384 | \\[font-lock-fontify-buffer] handles multi-line patterns correctly, updating |
| 385 | when you edit the buffer does not, since it considers text one line at a time. |
| 386 | |
| 387 | This variable is set by major modes via the variable `font-lock-defaults'. |
| 388 | Be careful when composing regexps for this list; a poorly written pattern can |
| 389 | dramatically slow things down!") |
| 390 | |
| 391 | ;; This variable is used by mode packages that support Font Lock mode by |
| 392 | ;; defining their own keywords to use for `font-lock-keywords'. (The mode |
| 393 | ;; command should make it buffer-local and set it to provide the set up.) |
| 394 | (defvar font-lock-defaults nil |
| 395 | "Defaults for Font Lock mode specified by the major mode. |
| 396 | Defaults should be of the form: |
| 397 | |
| 398 | (KEYWORDS KEYWORDS-ONLY CASE-FOLD SYNTAX-ALIST SYNTAX-BEGIN ...) |
| 399 | |
| 400 | KEYWORDS may be a symbol (a variable or function whose value is the keywords to |
| 401 | use for fontification) or a list of symbols. If KEYWORDS-ONLY is non-nil, |
| 402 | syntactic fontification (strings and comments) is not performed. |
| 403 | If CASE-FOLD is non-nil, the case of the keywords is ignored when fontifying. |
| 404 | If SYNTAX-ALIST is non-nil, it should be a list of cons pairs of the form |
| 405 | \(CHAR-OR-STRING . STRING) used to set the local Font Lock syntax table, for |
| 406 | keyword and syntactic fontification (see `modify-syntax-entry'). |
| 407 | |
| 408 | If SYNTAX-BEGIN is non-nil, it should be a function with no args used to move |
| 409 | backwards outside any enclosing syntactic block, for syntactic fontification. |
| 410 | Typical values are `beginning-of-line' (i.e., the start of the line is known to |
| 411 | be outside a syntactic block), or `beginning-of-defun' for programming modes or |
| 412 | `backward-paragraph' for textual modes (i.e., the mode-dependent function is |
| 413 | known to move outside a syntactic block). If nil, the beginning of the buffer |
| 414 | is used as a position outside of a syntactic block, in the worst case. |
| 415 | |
| 416 | These item elements are used by Font Lock mode to set the variables |
| 417 | `font-lock-keywords', `font-lock-keywords-only', |
| 418 | `font-lock-keywords-case-fold-search', `font-lock-syntax-table' and |
| 419 | `font-lock-beginning-of-syntax-function', respectively. |
| 420 | |
| 421 | Further item elements are alists of the form (VARIABLE . VALUE) and are in no |
| 422 | particular order. Each VARIABLE is made buffer-local before set to VALUE. |
| 423 | |
| 424 | Currently, appropriate variables include `font-lock-mark-block-function'. |
| 425 | If this is non-nil, it should be a function with no args used to mark any |
| 426 | enclosing block of text, for fontification via \\[font-lock-fontify-block]. |
| 427 | Typical values are `mark-defun' for programming modes or `mark-paragraph' for |
| 428 | textual modes (i.e., the mode-dependent function is known to put point and mark |
| 429 | around a text block relevant to that mode). |
| 430 | |
| 431 | Other variables include that for syntactic keyword fontification, |
| 432 | `font-lock-syntactic-keywords' |
| 433 | and those for buffer-specialised fontification functions, |
| 434 | `font-lock-fontify-buffer-function', `font-lock-unfontify-buffer-function', |
| 435 | `font-lock-fontify-region-function', `font-lock-unfontify-region-function', |
| 436 | `font-lock-inhibit-thing-lock' and `font-lock-maximum-size'.") |
| 437 | |
| 438 | ;; This variable is used where font-lock.el itself supplies the keywords. |
| 439 | (defvar font-lock-defaults-alist |
| 440 | (let (;; We use `beginning-of-defun', rather than nil, for SYNTAX-BEGIN. |
| 441 | ;; Thus the calculation of the cache is usually faster but not |
| 442 | ;; infallible, so we risk mis-fontification. sm. |
| 443 | (c-mode-defaults |
| 444 | '((c-font-lock-keywords c-font-lock-keywords-1 |
| 445 | c-font-lock-keywords-2 c-font-lock-keywords-3) |
| 446 | nil nil ((?_ . "w")) beginning-of-defun |
| 447 | (font-lock-mark-block-function . mark-defun))) |
| 448 | (c++-mode-defaults |
| 449 | '((c++-font-lock-keywords c++-font-lock-keywords-1 |
| 450 | c++-font-lock-keywords-2 c++-font-lock-keywords-3) |
| 451 | nil nil ((?_ . "w")) beginning-of-defun |
| 452 | (font-lock-mark-block-function . mark-defun))) |
| 453 | (objc-mode-defaults |
| 454 | '((objc-font-lock-keywords objc-font-lock-keywords-1 |
| 455 | objc-font-lock-keywords-2 objc-font-lock-keywords-3) |
| 456 | nil nil ((?_ . "w") (?$ . "w")) nil |
| 457 | (font-lock-mark-block-function . mark-defun))) |
| 458 | (java-mode-defaults |
| 459 | '((java-font-lock-keywords java-font-lock-keywords-1 |
| 460 | java-font-lock-keywords-2 java-font-lock-keywords-3) |
| 461 | nil nil ((?_ . "w") (?$ . "w")) nil |
| 462 | (font-lock-mark-block-function . mark-defun))) |
| 463 | (lisp-mode-defaults |
| 464 | '((lisp-font-lock-keywords |
| 465 | lisp-font-lock-keywords-1 lisp-font-lock-keywords-2) |
| 466 | nil nil (("+-*/.<>=!?$%_&~^:" . "w")) beginning-of-defun |
| 467 | (font-lock-mark-block-function . mark-defun))) |
| 468 | ;; For TeX modes we could use `backward-paragraph' for the same reason. |
| 469 | ;; But we don't, because paragraph breaks are arguably likely enough to |
| 470 | ;; occur within a genuine syntactic block to make it too risky. |
| 471 | ;; However, we do specify a MARK-BLOCK function as that cannot result |
| 472 | ;; in a mis-fontification even if it might not fontify enough. sm. |
| 473 | (tex-mode-defaults |
| 474 | '((tex-font-lock-keywords |
| 475 | tex-font-lock-keywords-1 tex-font-lock-keywords-2) |
| 476 | nil nil ((?$ . "\"")) nil |
| 477 | (font-lock-mark-block-function . mark-paragraph))) |
| 478 | ) |
| 479 | (list |
| 480 | (cons 'c-mode c-mode-defaults) |
| 481 | (cons 'c++-mode c++-mode-defaults) |
| 482 | (cons 'objc-mode objc-mode-defaults) |
| 483 | (cons 'java-mode java-mode-defaults) |
| 484 | (cons 'emacs-lisp-mode lisp-mode-defaults) |
| 485 | (cons 'latex-mode tex-mode-defaults) |
| 486 | (cons 'lisp-mode lisp-mode-defaults) |
| 487 | (cons 'lisp-interaction-mode lisp-mode-defaults) |
| 488 | (cons 'plain-tex-mode tex-mode-defaults) |
| 489 | (cons 'slitex-mode tex-mode-defaults) |
| 490 | (cons 'tex-mode tex-mode-defaults))) |
| 491 | "Alist of fall-back Font Lock defaults for major modes. |
| 492 | Each item should be a list of the form: |
| 493 | |
| 494 | (MAJOR-MODE . FONT-LOCK-DEFAULTS) |
| 495 | |
| 496 | where MAJOR-MODE is a symbol and FONT-LOCK-DEFAULTS is a list of default |
| 497 | settings. See the variable `font-lock-defaults', which takes precedence.") |
| 498 | |
| 499 | (defvar font-lock-keywords-alist nil |
| 500 | "*Alist of `font-lock-keywords' local to a `major-mode'. |
| 501 | This is normally set via `font-lock-add-keywords'.") |
| 502 | |
| 503 | (defvar font-lock-keywords-only nil |
| 504 | "*Non-nil means Font Lock should not fontify comments or strings. |
| 505 | This is normally set via `font-lock-defaults'.") |
| 506 | |
| 507 | (defvar font-lock-keywords-case-fold-search nil |
| 508 | "*Non-nil means the patterns in `font-lock-keywords' are case-insensitive. |
| 509 | This is normally set via `font-lock-defaults'.") |
| 510 | |
| 511 | (defvar font-lock-syntactic-keywords nil |
| 512 | "A list of the syntactic keywords to highlight. |
| 513 | Can be the list or the name of a function or variable whose value is the list. |
| 514 | See `font-lock-keywords' for a description of the form of this list; |
| 515 | the differences are listed below. MATCH-HIGHLIGHT should be of the form: |
| 516 | |
| 517 | (MATCH SYNTAX OVERRIDE LAXMATCH) |
| 518 | |
| 519 | where SYNTAX can be of the form (SYNTAX-CODE . MATCHING-CHAR), the name of a |
| 520 | syntax table, or an expression whose value is such a form or a syntax table. |
| 521 | OVERRIDE cannot be `prepend' or `append'. |
| 522 | |
| 523 | For example, an element of the form highlights syntactically: |
| 524 | |
| 525 | (\"\\\\$\\\\(#\\\\)\" 1 (1 . nil)) |
| 526 | |
| 527 | a hash character when following a dollar character, with a SYNTAX-CODE of |
| 528 | 1 (meaning punctuation syntax). Assuming that the buffer syntax table does |
| 529 | specify hash characters to have comment start syntax, the element will only |
| 530 | highlight hash characters that do not follow dollar characters as comments |
| 531 | syntactically. |
| 532 | |
| 533 | (\"\\\\('\\\\).\\\\('\\\\)\" |
| 534 | (1 (7 . ?')) |
| 535 | (2 (7 . ?'))) |
| 536 | |
| 537 | both single quotes which surround a single character, with a SYNTAX-CODE of |
| 538 | 7 (meaning string quote syntax) and a MATCHING-CHAR of a single quote (meaning |
| 539 | a single quote matches a single quote). Assuming that the buffer syntax table |
| 540 | does not specify single quotes to have quote syntax, the element will only |
| 541 | highlight single quotes of the form 'c' as strings syntactically. |
| 542 | Other forms, such as foo'bar or 'fubar', will not be highlighted as strings. |
| 543 | |
| 544 | This is normally set via `font-lock-defaults'.") |
| 545 | |
| 546 | (defvar font-lock-syntax-table nil |
| 547 | "Non-nil means use this syntax table for fontifying. |
| 548 | If this is nil, the major mode's syntax table is used. |
| 549 | This is normally set via `font-lock-defaults'.") |
| 550 | |
| 551 | ;; If this is nil, we only use the beginning of the buffer if we can't use |
| 552 | ;; `font-lock-cache-position' and `font-lock-cache-state'. |
| 553 | (defvar font-lock-beginning-of-syntax-function nil |
| 554 | "*Non-nil means use this function to move back outside of a syntactic block. |
| 555 | When called with no args it should leave point at the beginning of any |
| 556 | enclosing syntactic block. |
| 557 | If this is nil, the beginning of the buffer is used (in the worst case). |
| 558 | This is normally set via `font-lock-defaults'.") |
| 559 | |
| 560 | (defvar font-lock-mark-block-function nil |
| 561 | "*Non-nil means use this function to mark a block of text. |
| 562 | When called with no args it should leave point at the beginning of any |
| 563 | enclosing textual block and mark at the end. |
| 564 | This is normally set via `font-lock-defaults'.") |
| 565 | |
| 566 | (defvar font-lock-fontify-buffer-function 'font-lock-default-fontify-buffer |
| 567 | "Function to use for fontifying the buffer. |
| 568 | This is normally set via `font-lock-defaults'.") |
| 569 | |
| 570 | (defvar font-lock-unfontify-buffer-function 'font-lock-default-unfontify-buffer |
| 571 | "Function to use for unfontifying the buffer. |
| 572 | This is used when turning off Font Lock mode. |
| 573 | This is normally set via `font-lock-defaults'.") |
| 574 | |
| 575 | (defvar font-lock-fontify-region-function 'font-lock-default-fontify-region |
| 576 | "Function to use for fontifying a region. |
| 577 | It should take two args, the beginning and end of the region, and an optional |
| 578 | third arg VERBOSE. If non-nil, the function should print status messages. |
| 579 | This is normally set via `font-lock-defaults'.") |
| 580 | |
| 581 | (defvar font-lock-unfontify-region-function 'font-lock-default-unfontify-region |
| 582 | "Function to use for unfontifying a region. |
| 583 | It should take two args, the beginning and end of the region. |
| 584 | This is normally set via `font-lock-defaults'.") |
| 585 | |
| 586 | (defvar font-lock-inhibit-thing-lock nil |
| 587 | "List of Font Lock mode related modes that should not be turned on. |
| 588 | Currently, valid mode names as `fast-lock-mode' and `lazy-lock-mode'. |
| 589 | This is normally set via `font-lock-defaults'.") |
| 590 | |
| 591 | (defvar font-lock-mode nil) ; Whether we are turned on/modeline. |
| 592 | (defvar font-lock-fontified nil) ; Whether we have fontified the buffer. |
| 593 | |
| 594 | ;;;###autoload |
| 595 | (defvar font-lock-mode-hook nil |
| 596 | "Function or functions to run on entry to Font Lock mode.") |
| 597 | \f |
| 598 | ;; Font Lock mode. |
| 599 | |
| 600 | (eval-when-compile |
| 601 | ;; |
| 602 | ;; We don't do this at the top-level as we only use non-autoloaded macros. |
| 603 | (require 'cl) |
| 604 | ;; |
| 605 | ;; Borrowed from lazy-lock.el. |
| 606 | ;; We use this to preserve or protect things when modifying text properties. |
| 607 | (defmacro save-buffer-state (varlist &rest body) |
| 608 | "Bind variables according to VARLIST and eval BODY restoring buffer state." |
| 609 | (` (let* ((,@ (append varlist |
| 610 | '((modified (buffer-modified-p)) (buffer-undo-list t) |
| 611 | (inhibit-read-only t) (inhibit-point-motion-hooks t) |
| 612 | before-change-functions after-change-functions |
| 613 | deactivate-mark buffer-file-name buffer-file-truename)))) |
| 614 | (,@ body) |
| 615 | (when (and (not modified) (buffer-modified-p)) |
| 616 | (set-buffer-modified-p nil))))) |
| 617 | (put 'save-buffer-state 'lisp-indent-function 1) |
| 618 | ;; |
| 619 | ;; Shut up the byte compiler. |
| 620 | (defvar global-font-lock-mode) ; Now a defcustom. |
| 621 | (defvar font-lock-face-attributes) ; Obsolete but respected if set. |
| 622 | (defvar font-lock-string-face) ; Used in syntactic fontification. |
| 623 | (defvar font-lock-comment-face)) |
| 624 | |
| 625 | ;;;###autoload |
| 626 | (defun font-lock-mode (&optional arg) |
| 627 | "Toggle Font Lock mode. |
| 628 | With arg, turn Font Lock mode on if and only if arg is positive. |
| 629 | |
| 630 | When Font Lock mode is enabled, text is fontified as you type it: |
| 631 | |
| 632 | - Comments are displayed in `font-lock-comment-face'; |
| 633 | - Strings are displayed in `font-lock-string-face'; |
| 634 | - Certain other expressions are displayed in other faces according to the |
| 635 | value of the variable `font-lock-keywords'. |
| 636 | |
| 637 | You can enable Font Lock mode in any major mode automatically by turning on in |
| 638 | the major mode's hook. For example, put in your ~/.emacs: |
| 639 | |
| 640 | (add-hook 'c-mode-hook 'turn-on-font-lock) |
| 641 | |
| 642 | Alternatively, you can use Global Font Lock mode to automagically turn on Font |
| 643 | Lock mode in buffers whose major mode supports it and whose major mode is one |
| 644 | of `font-lock-global-modes'. For example, put in your ~/.emacs: |
| 645 | |
| 646 | (global-font-lock-mode t) |
| 647 | |
| 648 | There are a number of support modes that may be used to speed up Font Lock mode |
| 649 | in various ways, specified via the variable `font-lock-support-mode'. Where |
| 650 | major modes support different levels of fontification, you can use the variable |
| 651 | `font-lock-maximum-decoration' to specify which level you generally prefer. |
| 652 | When you turn Font Lock mode on/off the buffer is fontified/defontified, though |
| 653 | fontification occurs only if the buffer is less than `font-lock-maximum-size'. |
| 654 | |
| 655 | For example, to specify that Font Lock mode use use Lazy Lock mode as a support |
| 656 | mode and use maximum levels of fontification, put in your ~/.emacs: |
| 657 | |
| 658 | (setq font-lock-support-mode 'lazy-lock-mode) |
| 659 | (setq font-lock-maximum-decoration t) |
| 660 | |
| 661 | To add your own highlighting for some major mode, and modify the highlighting |
| 662 | selected automatically via the variable `font-lock-maximum-decoration', you can |
| 663 | use `font-lock-add-keywords'. |
| 664 | |
| 665 | To fontify a buffer, without turning on Font Lock mode and regardless of buffer |
| 666 | size, you can use \\[font-lock-fontify-buffer]. |
| 667 | |
| 668 | To fontify a block (the function or paragraph containing point, or a number of |
| 669 | lines around point), perhaps because modification on the current line caused |
| 670 | syntactic change on other lines, you can use \\[font-lock-fontify-block]. |
| 671 | |
| 672 | See the variable `font-lock-defaults-alist' for the Font Lock mode default |
| 673 | settings. You can set your own default settings for some mode, by setting a |
| 674 | buffer local value for `font-lock-defaults', via its mode hook." |
| 675 | (interactive "P") |
| 676 | ;; Don't turn on Font Lock mode if we don't have a display (we're running a |
| 677 | ;; batch job) or if the buffer is invisible (the name starts with a space). |
| 678 | (let ((on-p (and (not noninteractive) |
| 679 | (not (eq (aref (buffer-name) 0) ?\ )) |
| 680 | (if arg |
| 681 | (> (prefix-numeric-value arg) 0) |
| 682 | (not font-lock-mode))))) |
| 683 | (set (make-local-variable 'font-lock-mode) on-p) |
| 684 | ;; Turn on Font Lock mode. |
| 685 | (when on-p |
| 686 | (make-local-hook 'after-change-functions) |
| 687 | (add-hook 'after-change-functions 'font-lock-after-change-function nil t) |
| 688 | (font-lock-set-defaults) |
| 689 | (font-lock-turn-on-thing-lock) |
| 690 | (run-hooks 'font-lock-mode-hook) |
| 691 | ;; Fontify the buffer if we have to. |
| 692 | (let ((max-size (font-lock-value-in-major-mode font-lock-maximum-size))) |
| 693 | (cond (font-lock-fontified |
| 694 | nil) |
| 695 | ((or (null max-size) (> max-size (buffer-size))) |
| 696 | (font-lock-fontify-buffer)) |
| 697 | (font-lock-verbose |
| 698 | (message "Fontifying %s...buffer too big" (buffer-name)))))) |
| 699 | ;; Turn off Font Lock mode. |
| 700 | (unless on-p |
| 701 | (remove-hook 'after-change-functions 'font-lock-after-change-function t) |
| 702 | (font-lock-unfontify-buffer) |
| 703 | (font-lock-turn-off-thing-lock) |
| 704 | (font-lock-unset-defaults)) |
| 705 | (force-mode-line-update))) |
| 706 | |
| 707 | ;;;###autoload |
| 708 | (defun turn-on-font-lock () |
| 709 | "Turn on Font Lock mode conditionally. |
| 710 | Turn on only if the terminal can display it." |
| 711 | (when (and (not font-lock-mode) window-system) |
| 712 | (font-lock-mode))) |
| 713 | |
| 714 | ;;;###autoload |
| 715 | (defun font-lock-add-keywords (major-mode keywords &optional append) |
| 716 | "Add highlighting KEYWORDS for MAJOR-MODE. |
| 717 | MAJOR-MODE should be a symbol, the major mode command name, such as `c-mode' |
| 718 | or nil. If nil, highlighting keywords are added for the current buffer. |
| 719 | KEYWORDS should be a list; see the variable `font-lock-keywords'. |
| 720 | By default they are added at the beginning of the current highlighting list. |
| 721 | If optional argument APPEND is `set', they are used to replace the current |
| 722 | highlighting list. If APPEND is any other non-nil value, they are added at the |
| 723 | end of the current highlighting list. |
| 724 | |
| 725 | For example: |
| 726 | |
| 727 | (font-lock-add-keywords 'c-mode |
| 728 | '((\"\\\\\\=<\\\\(FIXME\\\\):\" 1 font-lock-warning-face prepend) |
| 729 | (\"\\\\\\=<\\\\(and\\\\|or\\\\|not\\\\)\\\\\\=>\" . font-lock-keyword-face))) |
| 730 | |
| 731 | adds two fontification patterns for C mode, to fontify `FIXME:' words, even in |
| 732 | comments, and to fontify `and', `or' and `not' words as keywords. |
| 733 | |
| 734 | Note that some modes have specialised support for additional patterns, e.g., |
| 735 | see the variables `c-font-lock-extra-types', `c++-font-lock-extra-types', |
| 736 | `objc-font-lock-extra-types' and `java-font-lock-extra-types'." |
| 737 | (cond (major-mode |
| 738 | ;; If MAJOR-MODE is non-nil, add the KEYWORDS and APPEND spec to |
| 739 | ;; `font-lock-keywords-alist' so `font-lock-set-defaults' uses them. |
| 740 | (let ((spec (cons keywords append)) cell) |
| 741 | (if (setq cell (assq major-mode font-lock-keywords-alist)) |
| 742 | (setcdr cell (append (cdr cell) (list spec))) |
| 743 | (push (list major-mode spec) font-lock-keywords-alist)))) |
| 744 | (font-lock-mode |
| 745 | ;; Otherwise if Font Lock mode is on, set or add the keywords now. |
| 746 | (if (eq append 'set) |
| 747 | (setq font-lock-keywords keywords) |
| 748 | (let ((old (if (eq (car-safe font-lock-keywords) t) |
| 749 | (cdr font-lock-keywords) |
| 750 | font-lock-keywords))) |
| 751 | (setq font-lock-keywords (if append |
| 752 | (append old keywords) |
| 753 | (append keywords old)))))))) |
| 754 | \f |
| 755 | ;;; Global Font Lock mode. |
| 756 | |
| 757 | ;; A few people have hassled in the past for a way to make it easier to turn on |
| 758 | ;; Font Lock mode, without the user needing to know for which modes s/he has to |
| 759 | ;; turn it on, perhaps the same way hilit19.el/hl319.el does. I've always |
| 760 | ;; balked at that way, as I see it as just re-moulding the same problem in |
| 761 | ;; another form. That is; some person would still have to keep track of which |
| 762 | ;; modes (which may not even be distributed with Emacs) support Font Lock mode. |
| 763 | ;; The list would always be out of date. And that person might have to be me. |
| 764 | |
| 765 | ;; Implementation. |
| 766 | ;; |
| 767 | ;; In a previous discussion the following hack came to mind. It is a gross |
| 768 | ;; hack, but it generally works. We use the convention that major modes start |
| 769 | ;; by calling the function `kill-all-local-variables', which in turn runs |
| 770 | ;; functions on the hook variable `change-major-mode-hook'. We attach our |
| 771 | ;; function `font-lock-change-major-mode' to that hook. Of course, when this |
| 772 | ;; hook is run, the major mode is in the process of being changed and we do not |
| 773 | ;; know what the final major mode will be. So, `font-lock-change-major-mode' |
| 774 | ;; only (a) notes the name of the current buffer, and (b) adds our function |
| 775 | ;; `turn-on-font-lock-if-enabled' to the hook variables `find-file-hooks' and |
| 776 | ;; `post-command-hook' (for buffers that are not visiting files). By the time |
| 777 | ;; the functions on the first of these hooks to be run are run, the new major |
| 778 | ;; mode is assumed to be in place. This way we get a Font Lock function run |
| 779 | ;; when a major mode is turned on, without knowing major modes or their hooks. |
| 780 | ;; |
| 781 | ;; Naturally this requires that (a) major modes run `kill-all-local-variables', |
| 782 | ;; as they are supposed to do, and (b) the major mode is in place after the |
| 783 | ;; file is visited or the command that ran `kill-all-local-variables' has |
| 784 | ;; finished, whichever the sooner. Arguably, any major mode that does not |
| 785 | ;; follow the convension (a) is broken, and I can't think of any reason why (b) |
| 786 | ;; would not be met (except `gnudoit' on non-files). However, it is not clean. |
| 787 | ;; |
| 788 | ;; Probably the cleanest solution is to have each major mode function run some |
| 789 | ;; hook, e.g., `major-mode-hook', but maybe implementing that change is |
| 790 | ;; impractical. I am personally against making `setq' a macro or be advised, |
| 791 | ;; or have a special function such as `set-major-mode', but maybe someone can |
| 792 | ;; come up with another solution? |
| 793 | |
| 794 | ;; User interface. |
| 795 | ;; |
| 796 | ;; Although Global Font Lock mode is a pseudo-mode, I think that the user |
| 797 | ;; interface should conform to the usual Emacs convention for modes, i.e., a |
| 798 | ;; command to toggle the feature (`global-font-lock-mode') with a variable for |
| 799 | ;; finer control of the mode's behaviour (`font-lock-global-modes'). |
| 800 | ;; |
| 801 | ;; The feature should not be enabled by loading font-lock.el, since other |
| 802 | ;; mechanisms for turning on Font Lock mode, such as M-x font-lock-mode RET or |
| 803 | ;; (add-hook 'c-mode-hook 'turn-on-font-lock), would cause Font Lock mode to be |
| 804 | ;; turned on everywhere. That would not be intuitive or informative because |
| 805 | ;; loading a file tells you nothing about the feature or how to control it. It |
| 806 | ;; would also be contrary to the Principle of Least Surprise. sm. |
| 807 | |
| 808 | (defvar font-lock-buffers nil) ; For remembering buffers. |
| 809 | |
| 810 | ;;;###autoload |
| 811 | (defun global-font-lock-mode (&optional arg message) |
| 812 | "Toggle Global Font Lock mode. |
| 813 | With prefix ARG, turn Global Font Lock mode on if and only if ARG is positive. |
| 814 | Displays a message saying whether the mode is on or off if MESSAGE is non-nil. |
| 815 | Returns the new status of Global Font Lock mode (non-nil means on). |
| 816 | |
| 817 | When Global Font Lock mode is enabled, Font Lock mode is automagically |
| 818 | turned on in a buffer if its major mode is one of `font-lock-global-modes'." |
| 819 | (interactive "P\np") |
| 820 | (let ((on-p (if arg |
| 821 | (> (prefix-numeric-value arg) 0) |
| 822 | (not global-font-lock-mode)))) |
| 823 | (cond (on-p |
| 824 | (add-hook 'find-file-hooks 'turn-on-font-lock-if-enabled) |
| 825 | (add-hook 'post-command-hook 'turn-on-font-lock-if-enabled) |
| 826 | (setq font-lock-buffers (buffer-list))) |
| 827 | (t |
| 828 | (remove-hook 'find-file-hooks 'turn-on-font-lock-if-enabled) |
| 829 | (mapcar (function (lambda (buffer) |
| 830 | (with-current-buffer buffer |
| 831 | (when font-lock-mode |
| 832 | (font-lock-mode))))) |
| 833 | (buffer-list)))) |
| 834 | (when message |
| 835 | (message "Global Font Lock mode %s." (if on-p "enabled" "disabled"))) |
| 836 | (setq global-font-lock-mode on-p))) |
| 837 | |
| 838 | ;; Naughty hack. This variable was originally a `defvar' to keep track of |
| 839 | ;; whether Global Font Lock mode was turned on or not. As a `defcustom' with |
| 840 | ;; special `:set' and `:require' forms, we can provide custom mode control. |
| 841 | (defcustom global-font-lock-mode nil |
| 842 | "Toggle Global Font Lock mode. |
| 843 | When Global Font Lock mode is enabled, Font Lock mode is automagically |
| 844 | turned on in a buffer if its major mode is one of `font-lock-global-modes'. |
| 845 | This variable should be set only with \\[customize], which is equivalent |
| 846 | to using the function `global-font-lock-mode'." |
| 847 | :set (lambda (symbol value) |
| 848 | (global-font-lock-mode (or value 0))) |
| 849 | :type 'boolean |
| 850 | :group 'font-lock |
| 851 | :require 'font-lock) |
| 852 | |
| 853 | (defcustom font-lock-global-modes t |
| 854 | "*Modes for which Font Lock mode is automagically turned on. |
| 855 | Global Font Lock mode is controlled by the `global-font-lock-mode' command. |
| 856 | If nil, means no modes have Font Lock mode automatically turned on. |
| 857 | If t, all modes that support Font Lock mode have it automatically turned on. |
| 858 | If a list, it should be a list of `major-mode' symbol names for which Font Lock |
| 859 | mode should be automatically turned on. The sense of the list is negated if it |
| 860 | begins with `not'. For example: |
| 861 | (c-mode c++-mode) |
| 862 | means that Font Lock mode is turned on for buffers in C and C++ modes only." |
| 863 | :type '(choice (const :tag "none" nil) |
| 864 | (const :tag "all" t) |
| 865 | (set :menu-tag "mode specific" :tag "modes" |
| 866 | :value (not) |
| 867 | (const :tag "Except" not) |
| 868 | (repeat :inline t (symbol :tag "mode")))) |
| 869 | :group 'font-lock) |
| 870 | |
| 871 | (defun font-lock-change-major-mode () |
| 872 | ;; Turn off Font Lock mode if it's on. |
| 873 | (when font-lock-mode |
| 874 | (font-lock-mode)) |
| 875 | ;; Gross hack warning: Delicate readers should avert eyes now. |
| 876 | ;; Something is running `kill-all-local-variables', which generally means the |
| 877 | ;; major mode is being changed. Run `turn-on-font-lock-if-enabled' after the |
| 878 | ;; file is visited or the current command has finished. |
| 879 | (when global-font-lock-mode |
| 880 | (add-hook 'post-command-hook 'turn-on-font-lock-if-enabled) |
| 881 | (add-to-list 'font-lock-buffers (current-buffer)))) |
| 882 | |
| 883 | (defun turn-on-font-lock-if-enabled () |
| 884 | ;; Gross hack warning: Delicate readers should avert eyes now. |
| 885 | ;; Turn on Font Lock mode if it's supported by the major mode and enabled by |
| 886 | ;; the user. |
| 887 | (remove-hook 'post-command-hook 'turn-on-font-lock-if-enabled) |
| 888 | (while font-lock-buffers |
| 889 | (when (buffer-live-p (car font-lock-buffers)) |
| 890 | (save-excursion |
| 891 | (set-buffer (car font-lock-buffers)) |
| 892 | (when (and (or font-lock-defaults |
| 893 | (assq major-mode font-lock-defaults-alist)) |
| 894 | (or (eq font-lock-global-modes t) |
| 895 | (if (eq (car-safe font-lock-global-modes) 'not) |
| 896 | (not (memq major-mode (cdr font-lock-global-modes))) |
| 897 | (memq major-mode font-lock-global-modes)))) |
| 898 | (let (inhibit-quit) |
| 899 | (turn-on-font-lock))))) |
| 900 | (setq font-lock-buffers (cdr font-lock-buffers)))) |
| 901 | |
| 902 | (add-hook 'change-major-mode-hook 'font-lock-change-major-mode) |
| 903 | |
| 904 | ;;; End of Global Font Lock mode. |
| 905 | \f |
| 906 | ;;; Font Lock Support mode. |
| 907 | |
| 908 | ;; This is the code used to interface font-lock.el with any of its add-on |
| 909 | ;; packages, and provide the user interface. Packages that have their own |
| 910 | ;; local buffer fontification functions (see below) may have to call |
| 911 | ;; `font-lock-after-fontify-buffer' and/or `font-lock-after-unfontify-buffer' |
| 912 | ;; themselves. |
| 913 | |
| 914 | (defcustom font-lock-support-mode nil |
| 915 | "*Support mode for Font Lock mode. |
| 916 | Support modes speed up Font Lock mode by being choosy about when fontification |
| 917 | occurs. Known support modes are Fast Lock mode (symbol `fast-lock-mode') and |
| 918 | Lazy Lock mode (symbol `lazy-lock-mode'). See those modes for more info. |
| 919 | If nil, means support for Font Lock mode is never performed. |
| 920 | If a symbol, use that support mode. |
| 921 | If a list, each element should be of the form (MAJOR-MODE . SUPPORT-MODE), |
| 922 | where MAJOR-MODE is a symbol or t (meaning the default). For example: |
| 923 | ((c-mode . fast-lock-mode) (c++-mode . fast-lock-mode) (t . lazy-lock-mode)) |
| 924 | means that Fast Lock mode is used to support Font Lock mode for buffers in C or |
| 925 | C++ modes, and Lazy Lock mode is used to support Font Lock mode otherwise. |
| 926 | |
| 927 | The value of this variable is used when Font Lock mode is turned on." |
| 928 | :type '(choice (const :tag "none" nil) |
| 929 | (const :tag "fast lock" fast-lock-mode) |
| 930 | (const :tag "lazy lock" lazy-lock-mode) |
| 931 | (repeat :menu-tag "mode specific" :tag "mode specific" |
| 932 | :value ((t . lazy-lock-mode)) |
| 933 | (cons :tag "Instance" |
| 934 | (radio :tag "Mode" |
| 935 | (const :tag "all" t) |
| 936 | (symbol :tag "name")) |
| 937 | (radio :tag "Support" |
| 938 | (const :tag "none" nil) |
| 939 | (const :tag "fast lock" fast-lock-mode) |
| 940 | (const :tag "lazy lock" lazy-lock-mode))) |
| 941 | )) |
| 942 | :group 'font-lock) |
| 943 | |
| 944 | (defvar fast-lock-mode nil) |
| 945 | (defvar lazy-lock-mode nil) |
| 946 | |
| 947 | (defun font-lock-turn-on-thing-lock () |
| 948 | (let ((thing-mode (font-lock-value-in-major-mode font-lock-support-mode))) |
| 949 | (cond ((eq thing-mode 'fast-lock-mode) |
| 950 | (fast-lock-mode t)) |
| 951 | ((eq thing-mode 'lazy-lock-mode) |
| 952 | (lazy-lock-mode t))))) |
| 953 | |
| 954 | (defun font-lock-turn-off-thing-lock () |
| 955 | (cond (fast-lock-mode |
| 956 | (fast-lock-mode nil)) |
| 957 | (lazy-lock-mode |
| 958 | (lazy-lock-mode nil)))) |
| 959 | |
| 960 | (defun font-lock-after-fontify-buffer () |
| 961 | (cond (fast-lock-mode |
| 962 | (fast-lock-after-fontify-buffer)) |
| 963 | (lazy-lock-mode |
| 964 | (lazy-lock-after-fontify-buffer)))) |
| 965 | |
| 966 | (defun font-lock-after-unfontify-buffer () |
| 967 | (cond (fast-lock-mode |
| 968 | (fast-lock-after-unfontify-buffer)) |
| 969 | (lazy-lock-mode |
| 970 | (lazy-lock-after-unfontify-buffer)))) |
| 971 | |
| 972 | ;;; End of Font Lock Support mode. |
| 973 | \f |
| 974 | ;;; Fontification functions. |
| 975 | |
| 976 | ;; Rather than the function, e.g., `font-lock-fontify-region' containing the |
| 977 | ;; code to fontify a region, the function runs the function whose name is the |
| 978 | ;; value of the variable, e.g., `font-lock-fontify-region-function'. Normally, |
| 979 | ;; the value of this variable is, e.g., `font-lock-default-fontify-region' |
| 980 | ;; which does contain the code to fontify a region. However, the value of the |
| 981 | ;; variable could be anything and thus, e.g., `font-lock-fontify-region' could |
| 982 | ;; do anything. The indirection of the fontification functions gives major |
| 983 | ;; modes the capability of modifying the way font-lock.el fontifies. Major |
| 984 | ;; modes can modify the values of, e.g., `font-lock-fontify-region-function', |
| 985 | ;; via the variable `font-lock-defaults'. |
| 986 | ;; |
| 987 | ;; For example, Rmail mode sets the variable `font-lock-defaults' so that |
| 988 | ;; font-lock.el uses its own function for buffer fontification. This function |
| 989 | ;; makes fontification be on a message-by-message basis and so visiting an |
| 990 | ;; RMAIL file is much faster. A clever implementation of the function might |
| 991 | ;; fontify the headers differently than the message body. (It should, and |
| 992 | ;; correspondingly for Mail mode, but I can't be bothered to do the work. Can |
| 993 | ;; you?) This hints at a more interesting use... |
| 994 | ;; |
| 995 | ;; Languages that contain text normally contained in different major modes |
| 996 | ;; could define their own fontification functions that treat text differently |
| 997 | ;; depending on its context. For example, Perl mode could arrange that here |
| 998 | ;; docs are fontified differently than Perl code. Or Yacc mode could fontify |
| 999 | ;; rules one way and C code another. Neat! |
| 1000 | ;; |
| 1001 | ;; A further reason to use the fontification indirection feature is when the |
| 1002 | ;; default syntactual fontification, or the default fontification in general, |
| 1003 | ;; is not flexible enough for a particular major mode. For example, perhaps |
| 1004 | ;; comments are just too hairy for `font-lock-fontify-syntactically-region' to |
| 1005 | ;; cope with. You need to write your own version of that function, e.g., |
| 1006 | ;; `hairy-fontify-syntactically-region', and make your own version of |
| 1007 | ;; `hairy-fontify-region' call that function before calling |
| 1008 | ;; `font-lock-fontify-keywords-region' for the normal regexp fontification |
| 1009 | ;; pass. And Hairy mode would set `font-lock-defaults' so that font-lock.el |
| 1010 | ;; would call your region fontification function instead of its own. For |
| 1011 | ;; example, TeX modes could fontify {\foo ...} and \bar{...} etc. multi-line |
| 1012 | ;; directives correctly and cleanly. (It is the same problem as fontifying |
| 1013 | ;; multi-line strings and comments; regexps are not appropriate for the job.) |
| 1014 | |
| 1015 | ;;;###autoload |
| 1016 | (defun font-lock-fontify-buffer () |
| 1017 | "Fontify the current buffer the way `font-lock-mode' would." |
| 1018 | (interactive) |
| 1019 | (let ((font-lock-verbose (or font-lock-verbose (interactive-p)))) |
| 1020 | (funcall font-lock-fontify-buffer-function))) |
| 1021 | |
| 1022 | (defun font-lock-unfontify-buffer () |
| 1023 | (funcall font-lock-unfontify-buffer-function)) |
| 1024 | |
| 1025 | (defun font-lock-fontify-region (beg end &optional loudly) |
| 1026 | (funcall font-lock-fontify-region-function beg end loudly)) |
| 1027 | |
| 1028 | (defun font-lock-unfontify-region (beg end) |
| 1029 | (funcall font-lock-unfontify-region-function beg end)) |
| 1030 | |
| 1031 | (defun font-lock-default-fontify-buffer () |
| 1032 | (let ((verbose (if (numberp font-lock-verbose) |
| 1033 | (> (buffer-size) font-lock-verbose) |
| 1034 | font-lock-verbose))) |
| 1035 | (with-temp-message |
| 1036 | (when verbose |
| 1037 | (format "Fontifying %s..." (buffer-name))) |
| 1038 | ;; Make sure we have the right `font-lock-keywords' etc. |
| 1039 | (unless font-lock-mode |
| 1040 | (font-lock-set-defaults)) |
| 1041 | ;; Make sure we fontify etc. in the whole buffer. |
| 1042 | (save-restriction |
| 1043 | (widen) |
| 1044 | (condition-case nil |
| 1045 | (save-excursion |
| 1046 | (save-match-data |
| 1047 | (font-lock-fontify-region (point-min) (point-max) verbose) |
| 1048 | (font-lock-after-fontify-buffer) |
| 1049 | (setq font-lock-fontified t))) |
| 1050 | ;; We don't restore the old fontification, so it's best to unfontify. |
| 1051 | (quit (font-lock-unfontify-buffer)))) |
| 1052 | ;; Make sure we undo `font-lock-keywords' etc. |
| 1053 | (unless font-lock-mode |
| 1054 | (font-lock-unset-defaults))))) |
| 1055 | |
| 1056 | (defun font-lock-default-unfontify-buffer () |
| 1057 | ;; Make sure we unfontify etc. in the whole buffer. |
| 1058 | (save-restriction |
| 1059 | (widen) |
| 1060 | (font-lock-unfontify-region (point-min) (point-max)) |
| 1061 | (font-lock-after-unfontify-buffer) |
| 1062 | (setq font-lock-fontified nil))) |
| 1063 | |
| 1064 | (defun font-lock-default-fontify-region (beg end loudly) |
| 1065 | (save-buffer-state |
| 1066 | ((parse-sexp-lookup-properties font-lock-syntactic-keywords) |
| 1067 | (old-syntax-table (syntax-table))) |
| 1068 | (unwind-protect |
| 1069 | (save-restriction |
| 1070 | (widen) |
| 1071 | ;; Use the fontification syntax table, if any. |
| 1072 | (when font-lock-syntax-table |
| 1073 | (set-syntax-table font-lock-syntax-table)) |
| 1074 | ;; Now do the fontification. |
| 1075 | (font-lock-unfontify-region beg end) |
| 1076 | (when font-lock-syntactic-keywords |
| 1077 | (font-lock-fontify-syntactic-keywords-region beg end)) |
| 1078 | (unless font-lock-keywords-only |
| 1079 | (font-lock-fontify-syntactically-region beg end loudly)) |
| 1080 | (font-lock-fontify-keywords-region beg end loudly)) |
| 1081 | ;; Clean up. |
| 1082 | (set-syntax-table old-syntax-table)))) |
| 1083 | |
| 1084 | ;; The following must be rethought, since keywords can override fontification. |
| 1085 | ; ;; Now scan for keywords, but not if we are inside a comment now. |
| 1086 | ; (or (and (not font-lock-keywords-only) |
| 1087 | ; (let ((state (parse-partial-sexp beg end nil nil |
| 1088 | ; font-lock-cache-state))) |
| 1089 | ; (or (nth 4 state) (nth 7 state)))) |
| 1090 | ; (font-lock-fontify-keywords-region beg end)) |
| 1091 | |
| 1092 | (defun font-lock-default-unfontify-region (beg end) |
| 1093 | (save-buffer-state nil |
| 1094 | (if font-lock-syntactic-keywords |
| 1095 | (remove-text-properties beg end '(face nil syntax-table nil)) |
| 1096 | (remove-text-properties beg end '(face nil))))) |
| 1097 | |
| 1098 | ;; Called when any modification is made to buffer text. |
| 1099 | (defun font-lock-after-change-function (beg end old-len) |
| 1100 | (let ((inhibit-point-motion-hooks t)) |
| 1101 | (save-excursion |
| 1102 | (save-match-data |
| 1103 | ;; Rescan between start of lines enclosing the region. |
| 1104 | (font-lock-fontify-region |
| 1105 | (progn (goto-char beg) (beginning-of-line) (point)) |
| 1106 | (progn (goto-char end) (forward-line 1) (point))))))) |
| 1107 | |
| 1108 | (defun font-lock-fontify-block (&optional arg) |
| 1109 | "Fontify some lines the way `font-lock-fontify-buffer' would. |
| 1110 | The lines could be a function or paragraph, or a specified number of lines. |
| 1111 | If ARG is given, fontify that many lines before and after point, or 16 lines if |
| 1112 | no ARG is given and `font-lock-mark-block-function' is nil. |
| 1113 | If `font-lock-mark-block-function' non-nil and no ARG is given, it is used to |
| 1114 | delimit the region to fontify." |
| 1115 | (interactive "P") |
| 1116 | (let ((inhibit-point-motion-hooks t) font-lock-beginning-of-syntax-function |
| 1117 | deactivate-mark) |
| 1118 | ;; Make sure we have the right `font-lock-keywords' etc. |
| 1119 | (if (not font-lock-mode) (font-lock-set-defaults)) |
| 1120 | (save-excursion |
| 1121 | (save-match-data |
| 1122 | (condition-case error-data |
| 1123 | (if (or arg (not font-lock-mark-block-function)) |
| 1124 | (let ((lines (if arg (prefix-numeric-value arg) 16))) |
| 1125 | (font-lock-fontify-region |
| 1126 | (save-excursion (forward-line (- lines)) (point)) |
| 1127 | (save-excursion (forward-line lines) (point)))) |
| 1128 | (funcall font-lock-mark-block-function) |
| 1129 | (font-lock-fontify-region (point) (mark))) |
| 1130 | ((error quit) (message "Fontifying block...%s" error-data))))))) |
| 1131 | |
| 1132 | (define-key facemenu-keymap "\M-g" 'font-lock-fontify-block) |
| 1133 | |
| 1134 | ;;; End of Fontification functions. |
| 1135 | \f |
| 1136 | ;;; Additional text property functions. |
| 1137 | |
| 1138 | ;; The following text property functions should be builtins. This means they |
| 1139 | ;; should be written in C and put with all the other text property functions. |
| 1140 | ;; In the meantime, those that are used by font-lock.el are defined in Lisp |
| 1141 | ;; below and given a `font-lock-' prefix. Those that are not used are defined |
| 1142 | ;; in Lisp below and commented out. sm. |
| 1143 | |
| 1144 | (defun font-lock-prepend-text-property (start end prop value &optional object) |
| 1145 | "Prepend to one property of the text from START to END. |
| 1146 | Arguments PROP and VALUE specify the property and value to prepend to the value |
| 1147 | already in place. The resulting property values are always lists. |
| 1148 | Optional argument OBJECT is the string or buffer containing the text." |
| 1149 | (let ((val (if (listp value) value (list value))) next prev) |
| 1150 | (while (/= start end) |
| 1151 | (setq next (next-single-property-change start prop object end) |
| 1152 | prev (get-text-property start prop object)) |
| 1153 | (put-text-property start next prop |
| 1154 | (append val (if (listp prev) prev (list prev))) |
| 1155 | object) |
| 1156 | (setq start next)))) |
| 1157 | |
| 1158 | (defun font-lock-append-text-property (start end prop value &optional object) |
| 1159 | "Append to one property of the text from START to END. |
| 1160 | Arguments PROP and VALUE specify the property and value to append to the value |
| 1161 | already in place. The resulting property values are always lists. |
| 1162 | Optional argument OBJECT is the string or buffer containing the text." |
| 1163 | (let ((val (if (listp value) value (list value))) next prev) |
| 1164 | (while (/= start end) |
| 1165 | (setq next (next-single-property-change start prop object end) |
| 1166 | prev (get-text-property start prop object)) |
| 1167 | (put-text-property start next prop |
| 1168 | (append (if (listp prev) prev (list prev)) val) |
| 1169 | object) |
| 1170 | (setq start next)))) |
| 1171 | |
| 1172 | (defun font-lock-fillin-text-property (start end prop value &optional object) |
| 1173 | "Fill in one property of the text from START to END. |
| 1174 | Arguments PROP and VALUE specify the property and value to put where none are |
| 1175 | already in place. Therefore existing property values are not overwritten. |
| 1176 | Optional argument OBJECT is the string or buffer containing the text." |
| 1177 | (let ((start (text-property-any start end prop nil object)) next) |
| 1178 | (while start |
| 1179 | (setq next (next-single-property-change start prop object end)) |
| 1180 | (put-text-property start next prop value object) |
| 1181 | (setq start (text-property-any next end prop nil object))))) |
| 1182 | |
| 1183 | ;; For completeness: this is to `remove-text-properties' as `put-text-property' |
| 1184 | ;; is to `add-text-properties', etc. |
| 1185 | ;(defun remove-text-property (start end property &optional object) |
| 1186 | ; "Remove a property from text from START to END. |
| 1187 | ;Argument PROPERTY is the property to remove. |
| 1188 | ;Optional argument OBJECT is the string or buffer containing the text. |
| 1189 | ;Return t if the property was actually removed, nil otherwise." |
| 1190 | ; (remove-text-properties start end (list property) object)) |
| 1191 | |
| 1192 | ;; For consistency: maybe this should be called `remove-single-property' like |
| 1193 | ;; `next-single-property-change' (not `next-single-text-property-change'), etc. |
| 1194 | ;(defun remove-single-text-property (start end prop value &optional object) |
| 1195 | ; "Remove a specific property value from text from START to END. |
| 1196 | ;Arguments PROP and VALUE specify the property and value to remove. The |
| 1197 | ;resulting property values are not equal to VALUE nor lists containing VALUE. |
| 1198 | ;Optional argument OBJECT is the string or buffer containing the text." |
| 1199 | ; (let ((start (text-property-not-all start end prop nil object)) next prev) |
| 1200 | ; (while start |
| 1201 | ; (setq next (next-single-property-change start prop object end) |
| 1202 | ; prev (get-text-property start prop object)) |
| 1203 | ; (cond ((and (symbolp prev) (eq value prev)) |
| 1204 | ; (remove-text-property start next prop object)) |
| 1205 | ; ((and (listp prev) (memq value prev)) |
| 1206 | ; (let ((new (delq value prev))) |
| 1207 | ; (cond ((null new) |
| 1208 | ; (remove-text-property start next prop object)) |
| 1209 | ; ((= (length new) 1) |
| 1210 | ; (put-text-property start next prop (car new) object)) |
| 1211 | ; (t |
| 1212 | ; (put-text-property start next prop new object)))))) |
| 1213 | ; (setq start (text-property-not-all next end prop nil object))))) |
| 1214 | |
| 1215 | ;;; End of Additional text property functions. |
| 1216 | \f |
| 1217 | ;;; Syntactic regexp fontification functions. |
| 1218 | |
| 1219 | ;; These syntactic keyword pass functions are identical to those keyword pass |
| 1220 | ;; functions below, with the following exceptions; (a) they operate on |
| 1221 | ;; `font-lock-syntactic-keywords' of course, (b) they are all `defun' as speed |
| 1222 | ;; is less of an issue, (c) eval of property value does not occur JIT as speed |
| 1223 | ;; is less of an issue, (d) OVERRIDE cannot be `prepend' or `append' as it |
| 1224 | ;; makes no sense for `syntax-table' property values, (e) they do not do it |
| 1225 | ;; LOUDLY as it is not likely to be intensive. |
| 1226 | |
| 1227 | (defun font-lock-apply-syntactic-highlight (highlight) |
| 1228 | "Apply HIGHLIGHT following a match. |
| 1229 | HIGHLIGHT should be of the form MATCH-HIGHLIGHT, |
| 1230 | see `font-lock-syntactic-keywords'." |
| 1231 | (let* ((match (nth 0 highlight)) |
| 1232 | (start (match-beginning match)) (end (match-end match)) |
| 1233 | (value (nth 1 highlight)) |
| 1234 | (override (nth 2 highlight))) |
| 1235 | (unless (numberp (car value)) |
| 1236 | (setq value (eval value))) |
| 1237 | (cond ((not start) |
| 1238 | ;; No match but we might not signal an error. |
| 1239 | (or (nth 3 highlight) |
| 1240 | (error "No match %d in highlight %S" match highlight))) |
| 1241 | ((not override) |
| 1242 | ;; Cannot override existing fontification. |
| 1243 | (or (text-property-not-all start end 'syntax-table nil) |
| 1244 | (put-text-property start end 'syntax-table value))) |
| 1245 | ((eq override t) |
| 1246 | ;; Override existing fontification. |
| 1247 | (put-text-property start end 'syntax-table value)) |
| 1248 | ((eq override 'keep) |
| 1249 | ;; Keep existing fontification. |
| 1250 | (font-lock-fillin-text-property start end 'syntax-table value))))) |
| 1251 | |
| 1252 | (defun font-lock-fontify-syntactic-anchored-keywords (keywords limit) |
| 1253 | "Fontify according to KEYWORDS until LIMIT. |
| 1254 | KEYWORDS should be of the form MATCH-ANCHORED, see `font-lock-keywords', |
| 1255 | LIMIT can be modified by the value of its PRE-MATCH-FORM." |
| 1256 | (let ((matcher (nth 0 keywords)) (lowdarks (nthcdr 3 keywords)) highlights |
| 1257 | ;; Evaluate PRE-MATCH-FORM. |
| 1258 | (pre-match-value (eval (nth 1 keywords)))) |
| 1259 | ;; Set LIMIT to value of PRE-MATCH-FORM or the end of line. |
| 1260 | (if (and (numberp pre-match-value) (> pre-match-value (point))) |
| 1261 | (setq limit pre-match-value) |
| 1262 | (save-excursion (end-of-line) (setq limit (point)))) |
| 1263 | (save-match-data |
| 1264 | ;; Find an occurrence of `matcher' before `limit'. |
| 1265 | (while (if (stringp matcher) |
| 1266 | (re-search-forward matcher limit t) |
| 1267 | (funcall matcher limit)) |
| 1268 | ;; Apply each highlight to this instance of `matcher'. |
| 1269 | (setq highlights lowdarks) |
| 1270 | (while highlights |
| 1271 | (font-lock-apply-syntactic-highlight (car highlights)) |
| 1272 | (setq highlights (cdr highlights))))) |
| 1273 | ;; Evaluate POST-MATCH-FORM. |
| 1274 | (eval (nth 2 keywords)))) |
| 1275 | |
| 1276 | (defun font-lock-fontify-syntactic-keywords-region (start end) |
| 1277 | "Fontify according to `font-lock-syntactic-keywords' between START and END. |
| 1278 | START should be at the beginning of a line." |
| 1279 | ;; If `font-lock-syntactic-keywords' is a symbol, get the real keywords. |
| 1280 | (when (symbolp font-lock-syntactic-keywords) |
| 1281 | (setq font-lock-syntactic-keywords (font-lock-eval-keywords |
| 1282 | font-lock-syntactic-keywords))) |
| 1283 | ;; If `font-lock-syntactic-keywords' is not compiled, compile it. |
| 1284 | (unless (eq (car font-lock-syntactic-keywords) t) |
| 1285 | (setq font-lock-syntactic-keywords (font-lock-compile-keywords |
| 1286 | font-lock-syntactic-keywords))) |
| 1287 | ;; Get down to business. |
| 1288 | (let ((case-fold-search font-lock-keywords-case-fold-search) |
| 1289 | (keywords (cdr font-lock-syntactic-keywords)) |
| 1290 | keyword matcher highlights) |
| 1291 | (while keywords |
| 1292 | ;; Find an occurrence of `matcher' from `start' to `end'. |
| 1293 | (setq keyword (car keywords) matcher (car keyword)) |
| 1294 | (goto-char start) |
| 1295 | (while (if (stringp matcher) |
| 1296 | (re-search-forward matcher end t) |
| 1297 | (funcall matcher end)) |
| 1298 | ;; Apply each highlight to this instance of `matcher', which may be |
| 1299 | ;; specific highlights or more keywords anchored to `matcher'. |
| 1300 | (setq highlights (cdr keyword)) |
| 1301 | (while highlights |
| 1302 | (if (numberp (car (car highlights))) |
| 1303 | (font-lock-apply-syntactic-highlight (car highlights)) |
| 1304 | (font-lock-fontify-syntactic-anchored-keywords (car highlights) |
| 1305 | end)) |
| 1306 | (setq highlights (cdr highlights)))) |
| 1307 | (setq keywords (cdr keywords))))) |
| 1308 | |
| 1309 | ;;; End of Syntactic regexp fontification functions. |
| 1310 | \f |
| 1311 | ;;; Syntactic fontification functions. |
| 1312 | |
| 1313 | ;; These record the parse state at a particular position, always the start of a |
| 1314 | ;; line. Used to make `font-lock-fontify-syntactically-region' faster. |
| 1315 | ;; Previously, `font-lock-cache-position' was just a buffer position. However, |
| 1316 | ;; under certain situations, this occasionally resulted in mis-fontification. |
| 1317 | ;; I think the "situations" were deletion with Lazy Lock mode's deferral. sm. |
| 1318 | (defvar font-lock-cache-state nil) |
| 1319 | (defvar font-lock-cache-position nil) |
| 1320 | |
| 1321 | (defun font-lock-fontify-syntactically-region (start end &optional loudly) |
| 1322 | "Put proper face on each string and comment between START and END. |
| 1323 | START should be at the beginning of a line." |
| 1324 | (let ((cache (marker-position font-lock-cache-position)) |
| 1325 | state string beg) |
| 1326 | (if loudly (message "Fontifying %s... (syntactically...)" (buffer-name))) |
| 1327 | (goto-char start) |
| 1328 | ;; |
| 1329 | ;; Find the state at the `beginning-of-line' before `start'. |
| 1330 | (if (eq start cache) |
| 1331 | ;; Use the cache for the state of `start'. |
| 1332 | (setq state font-lock-cache-state) |
| 1333 | ;; Find the state of `start'. |
| 1334 | (if (null font-lock-beginning-of-syntax-function) |
| 1335 | ;; Use the state at the previous cache position, if any, or |
| 1336 | ;; otherwise calculate from `point-min'. |
| 1337 | (if (or (null cache) (< start cache)) |
| 1338 | (setq state (parse-partial-sexp (point-min) start)) |
| 1339 | (setq state (parse-partial-sexp cache start nil nil |
| 1340 | font-lock-cache-state))) |
| 1341 | ;; Call the function to move outside any syntactic block. |
| 1342 | (funcall font-lock-beginning-of-syntax-function) |
| 1343 | (setq state (parse-partial-sexp (point) start))) |
| 1344 | ;; Cache the state and position of `start'. |
| 1345 | (setq font-lock-cache-state state) |
| 1346 | (set-marker font-lock-cache-position start)) |
| 1347 | ;; |
| 1348 | ;; If the region starts inside a string or comment, show the extent of it. |
| 1349 | (when (or (nth 3 state) (nth 4 state)) |
| 1350 | (setq string (nth 3 state) beg (point)) |
| 1351 | (setq state (parse-partial-sexp (point) end nil nil state 'syntax-table)) |
| 1352 | (put-text-property beg (point) 'face |
| 1353 | (if string |
| 1354 | font-lock-string-face |
| 1355 | font-lock-comment-face))) |
| 1356 | ;; |
| 1357 | ;; Find each interesting place between here and `end'. |
| 1358 | (while (and (< (point) end) |
| 1359 | (progn |
| 1360 | (setq state (parse-partial-sexp (point) end nil nil state |
| 1361 | 'syntax-table)) |
| 1362 | (or (nth 3 state) (nth 4 state)))) |
| 1363 | (setq string (nth 3 state) beg (nth 8 state)) |
| 1364 | (setq state (parse-partial-sexp (point) end nil nil state 'syntax-table)) |
| 1365 | (put-text-property beg (point) 'face |
| 1366 | (if string |
| 1367 | font-lock-string-face |
| 1368 | font-lock-comment-face))))) |
| 1369 | |
| 1370 | ;;; End of Syntactic fontification functions. |
| 1371 | \f |
| 1372 | ;;; Keyword regexp fontification functions. |
| 1373 | |
| 1374 | (defsubst font-lock-apply-highlight (highlight) |
| 1375 | "Apply HIGHLIGHT following a match. |
| 1376 | HIGHLIGHT should be of the form MATCH-HIGHLIGHT, see `font-lock-keywords'." |
| 1377 | (let* ((match (nth 0 highlight)) |
| 1378 | (start (match-beginning match)) (end (match-end match)) |
| 1379 | (override (nth 2 highlight))) |
| 1380 | (cond ((not start) |
| 1381 | ;; No match but we might not signal an error. |
| 1382 | (or (nth 3 highlight) |
| 1383 | (error "No match %d in highlight %S" match highlight))) |
| 1384 | ((not override) |
| 1385 | ;; Cannot override existing fontification. |
| 1386 | (or (text-property-not-all start end 'face nil) |
| 1387 | (put-text-property start end 'face (eval (nth 1 highlight))))) |
| 1388 | ((eq override t) |
| 1389 | ;; Override existing fontification. |
| 1390 | (put-text-property start end 'face (eval (nth 1 highlight)))) |
| 1391 | ((eq override 'prepend) |
| 1392 | ;; Prepend to existing fontification. |
| 1393 | (font-lock-prepend-text-property start end 'face (eval (nth 1 highlight)))) |
| 1394 | ((eq override 'append) |
| 1395 | ;; Append to existing fontification. |
| 1396 | (font-lock-append-text-property start end 'face (eval (nth 1 highlight)))) |
| 1397 | ((eq override 'keep) |
| 1398 | ;; Keep existing fontification. |
| 1399 | (font-lock-fillin-text-property start end 'face (eval (nth 1 highlight))))))) |
| 1400 | |
| 1401 | (defsubst font-lock-fontify-anchored-keywords (keywords limit) |
| 1402 | "Fontify according to KEYWORDS until LIMIT. |
| 1403 | KEYWORDS should be of the form MATCH-ANCHORED, see `font-lock-keywords', |
| 1404 | LIMIT can be modified by the value of its PRE-MATCH-FORM." |
| 1405 | (let ((matcher (nth 0 keywords)) (lowdarks (nthcdr 3 keywords)) highlights |
| 1406 | ;; Evaluate PRE-MATCH-FORM. |
| 1407 | (pre-match-value (eval (nth 1 keywords)))) |
| 1408 | ;; Set LIMIT to value of PRE-MATCH-FORM or the end of line. |
| 1409 | (if (and (numberp pre-match-value) (> pre-match-value (point))) |
| 1410 | (setq limit pre-match-value) |
| 1411 | (save-excursion (end-of-line) (setq limit (point)))) |
| 1412 | (save-match-data |
| 1413 | ;; Find an occurrence of `matcher' before `limit'. |
| 1414 | (while (if (stringp matcher) |
| 1415 | (re-search-forward matcher limit t) |
| 1416 | (funcall matcher limit)) |
| 1417 | ;; Apply each highlight to this instance of `matcher'. |
| 1418 | (setq highlights lowdarks) |
| 1419 | (while highlights |
| 1420 | (font-lock-apply-highlight (car highlights)) |
| 1421 | (setq highlights (cdr highlights))))) |
| 1422 | ;; Evaluate POST-MATCH-FORM. |
| 1423 | (eval (nth 2 keywords)))) |
| 1424 | |
| 1425 | (defun font-lock-fontify-keywords-region (start end &optional loudly) |
| 1426 | "Fontify according to `font-lock-keywords' between START and END. |
| 1427 | START should be at the beginning of a line." |
| 1428 | (unless (eq (car font-lock-keywords) t) |
| 1429 | (setq font-lock-keywords (font-lock-compile-keywords font-lock-keywords))) |
| 1430 | (let ((case-fold-search font-lock-keywords-case-fold-search) |
| 1431 | (keywords (cdr font-lock-keywords)) |
| 1432 | (bufname (buffer-name)) (count 0) |
| 1433 | keyword matcher highlights) |
| 1434 | ;; |
| 1435 | ;; Fontify each item in `font-lock-keywords' from `start' to `end'. |
| 1436 | (while keywords |
| 1437 | (if loudly (message "Fontifying %s... (regexps..%s)" bufname |
| 1438 | (make-string (incf count) ?.))) |
| 1439 | ;; |
| 1440 | ;; Find an occurrence of `matcher' from `start' to `end'. |
| 1441 | (setq keyword (car keywords) matcher (car keyword)) |
| 1442 | (goto-char start) |
| 1443 | (while (if (stringp matcher) |
| 1444 | (re-search-forward matcher end t) |
| 1445 | (funcall matcher end)) |
| 1446 | ;; Apply each highlight to this instance of `matcher', which may be |
| 1447 | ;; specific highlights or more keywords anchored to `matcher'. |
| 1448 | (setq highlights (cdr keyword)) |
| 1449 | (while highlights |
| 1450 | (if (numberp (car (car highlights))) |
| 1451 | (font-lock-apply-highlight (car highlights)) |
| 1452 | (font-lock-fontify-anchored-keywords (car highlights) end)) |
| 1453 | (setq highlights (cdr highlights)))) |
| 1454 | (setq keywords (cdr keywords))))) |
| 1455 | |
| 1456 | ;;; End of Keyword regexp fontification functions. |
| 1457 | \f |
| 1458 | ;; Various functions. |
| 1459 | |
| 1460 | (defun font-lock-compile-keywords (keywords) |
| 1461 | ;; Compile KEYWORDS into the form (t KEYWORD ...) where KEYWORD is of the |
| 1462 | ;; form (MATCHER HIGHLIGHT ...) as shown in `font-lock-keywords' doc string. |
| 1463 | (if (eq (car-safe keywords) t) |
| 1464 | keywords |
| 1465 | (cons t (mapcar 'font-lock-compile-keyword keywords)))) |
| 1466 | |
| 1467 | (defun font-lock-compile-keyword (keyword) |
| 1468 | (cond ((nlistp keyword) ; MATCHER |
| 1469 | (list keyword '(0 font-lock-keyword-face))) |
| 1470 | ((eq (car keyword) 'eval) ; (eval . FORM) |
| 1471 | (font-lock-compile-keyword (eval (cdr keyword)))) |
| 1472 | ((eq (car-safe (cdr keyword)) 'quote) ; (MATCHER . 'FORM) |
| 1473 | ;; If FORM is a FACENAME then quote it. Otherwise ignore the quote. |
| 1474 | (if (symbolp (nth 2 keyword)) |
| 1475 | (list (car keyword) (list 0 (cdr keyword))) |
| 1476 | (font-lock-compile-keyword (cons (car keyword) (nth 2 keyword))))) |
| 1477 | ((numberp (cdr keyword)) ; (MATCHER . MATCH) |
| 1478 | (list (car keyword) (list (cdr keyword) 'font-lock-keyword-face))) |
| 1479 | ((symbolp (cdr keyword)) ; (MATCHER . FACENAME) |
| 1480 | (list (car keyword) (list 0 (cdr keyword)))) |
| 1481 | ((nlistp (nth 1 keyword)) ; (MATCHER . HIGHLIGHT) |
| 1482 | (list (car keyword) (cdr keyword))) |
| 1483 | (t ; (MATCHER HIGHLIGHT ...) |
| 1484 | keyword))) |
| 1485 | |
| 1486 | (defun font-lock-eval-keywords (keywords) |
| 1487 | ;; Evalulate KEYWORDS if a function (funcall) or variable (eval) name. |
| 1488 | (if (listp keywords) |
| 1489 | keywords |
| 1490 | (font-lock-eval-keywords (if (fboundp keywords) |
| 1491 | (funcall keywords) |
| 1492 | (eval keywords))))) |
| 1493 | |
| 1494 | (defun font-lock-value-in-major-mode (alist) |
| 1495 | ;; Return value in ALIST for `major-mode', or ALIST if it is not an alist. |
| 1496 | ;; Structure is ((MAJOR-MODE . VALUE) ...) where MAJOR-MODE may be t. |
| 1497 | (if (consp alist) |
| 1498 | (cdr (or (assq major-mode alist) (assq t alist))) |
| 1499 | alist)) |
| 1500 | |
| 1501 | (defun font-lock-choose-keywords (keywords level) |
| 1502 | ;; Return LEVELth element of KEYWORDS. A LEVEL of nil is equal to a |
| 1503 | ;; LEVEL of 0, a LEVEL of t is equal to (1- (length KEYWORDS)). |
| 1504 | (cond ((symbolp keywords) |
| 1505 | keywords) |
| 1506 | ((numberp level) |
| 1507 | (or (nth level keywords) (car (reverse keywords)))) |
| 1508 | ((eq level t) |
| 1509 | (car (reverse keywords))) |
| 1510 | (t |
| 1511 | (car keywords)))) |
| 1512 | |
| 1513 | (defvar font-lock-set-defaults nil) ; Whether we have set up defaults. |
| 1514 | |
| 1515 | (defun font-lock-set-defaults () |
| 1516 | "Set fontification defaults appropriately for this mode. |
| 1517 | Sets various variables using `font-lock-defaults' (or, if nil, using |
| 1518 | `font-lock-defaults-alist') and `font-lock-maximum-decoration'." |
| 1519 | ;; Set fontification defaults. |
| 1520 | (make-local-variable 'font-lock-fontified) |
| 1521 | ;; Set iff not previously set. |
| 1522 | (unless font-lock-set-defaults |
| 1523 | (set (make-local-variable 'font-lock-set-defaults) t) |
| 1524 | (set (make-local-variable 'font-lock-cache-state) nil) |
| 1525 | (set (make-local-variable 'font-lock-cache-position) (make-marker)) |
| 1526 | (let* ((defaults (or font-lock-defaults |
| 1527 | (cdr (assq major-mode font-lock-defaults-alist)))) |
| 1528 | (keywords |
| 1529 | (font-lock-choose-keywords (nth 0 defaults) |
| 1530 | (font-lock-value-in-major-mode font-lock-maximum-decoration))) |
| 1531 | (local (cdr (assq major-mode font-lock-keywords-alist)))) |
| 1532 | ;; Regexp fontification? |
| 1533 | (set (make-local-variable 'font-lock-keywords) |
| 1534 | (font-lock-compile-keywords (font-lock-eval-keywords keywords))) |
| 1535 | ;; Local fontification? |
| 1536 | (while local |
| 1537 | (font-lock-add-keywords nil (car (car local)) (cdr (car local))) |
| 1538 | (setq local (cdr local))) |
| 1539 | ;; Syntactic fontification? |
| 1540 | (when (nth 1 defaults) |
| 1541 | (set (make-local-variable 'font-lock-keywords-only) t)) |
| 1542 | ;; Case fold during regexp fontification? |
| 1543 | (when (nth 2 defaults) |
| 1544 | (set (make-local-variable 'font-lock-keywords-case-fold-search) t)) |
| 1545 | ;; Syntax table for regexp and syntactic fontification? |
| 1546 | (when (nth 3 defaults) |
| 1547 | (let ((slist (nth 3 defaults))) |
| 1548 | (set (make-local-variable 'font-lock-syntax-table) |
| 1549 | (copy-syntax-table (syntax-table))) |
| 1550 | (while slist |
| 1551 | ;; The character to modify may be a single CHAR or a STRING. |
| 1552 | (let ((chars (if (numberp (car (car slist))) |
| 1553 | (list (car (car slist))) |
| 1554 | (mapcar 'identity (car (car slist))))) |
| 1555 | (syntax (cdr (car slist)))) |
| 1556 | (while chars |
| 1557 | (modify-syntax-entry (car chars) syntax font-lock-syntax-table) |
| 1558 | (setq chars (cdr chars))) |
| 1559 | (setq slist (cdr slist)))))) |
| 1560 | ;; Syntax function for syntactic fontification? |
| 1561 | (when (nth 4 defaults) |
| 1562 | (set (make-local-variable 'font-lock-beginning-of-syntax-function) |
| 1563 | (nth 4 defaults))) |
| 1564 | ;; Variable alist? |
| 1565 | (let ((alist (nthcdr 5 defaults))) |
| 1566 | (while alist |
| 1567 | (let ((variable (car (car alist))) (value (cdr (car alist)))) |
| 1568 | (unless (boundp variable) |
| 1569 | (set variable nil)) |
| 1570 | (set (make-local-variable variable) value) |
| 1571 | (setq alist (cdr alist)))))))) |
| 1572 | |
| 1573 | (defun font-lock-unset-defaults () |
| 1574 | "Unset fontification defaults. See `font-lock-set-defaults'." |
| 1575 | (setq font-lock-set-defaults nil |
| 1576 | font-lock-keywords nil |
| 1577 | font-lock-keywords-only nil |
| 1578 | font-lock-keywords-case-fold-search nil |
| 1579 | font-lock-syntax-table nil |
| 1580 | font-lock-beginning-of-syntax-function nil) |
| 1581 | (let* ((defaults (or font-lock-defaults |
| 1582 | (cdr (assq major-mode font-lock-defaults-alist)))) |
| 1583 | (alist (nthcdr 5 defaults))) |
| 1584 | (while alist |
| 1585 | (set (car (car alist)) (default-value (car (car alist)))) |
| 1586 | (setq alist (cdr alist))))) |
| 1587 | \f |
| 1588 | ;;; Colour etc. support. |
| 1589 | |
| 1590 | ;; Originally these variable values were face names such as `bold' etc. |
| 1591 | ;; Now we create our own faces, but we keep these variables for compatibility |
| 1592 | ;; and they give users another mechanism for changing face appearance. |
| 1593 | ;; We now allow a FACENAME in `font-lock-keywords' to be any expression that |
| 1594 | ;; returns a face. So the easiest thing is to continue using these variables, |
| 1595 | ;; rather than sometimes evaling FACENAME and sometimes not. sm. |
| 1596 | (defvar font-lock-comment-face 'font-lock-comment-face |
| 1597 | "Face name to use for comments.") |
| 1598 | |
| 1599 | (defvar font-lock-string-face 'font-lock-string-face |
| 1600 | "Face name to use for strings.") |
| 1601 | |
| 1602 | (defvar font-lock-keyword-face 'font-lock-keyword-face |
| 1603 | "Face name to use for keywords.") |
| 1604 | |
| 1605 | (defvar font-lock-builtin-face 'font-lock-builtin-face |
| 1606 | "Face name to use for builtins.") |
| 1607 | |
| 1608 | (defvar font-lock-function-name-face 'font-lock-function-name-face |
| 1609 | "Face name to use for function names.") |
| 1610 | |
| 1611 | (defvar font-lock-variable-name-face 'font-lock-variable-name-face |
| 1612 | "Face name to use for variable names.") |
| 1613 | |
| 1614 | (defvar font-lock-type-face 'font-lock-type-face |
| 1615 | "Face name to use for type and class names.") |
| 1616 | |
| 1617 | (defvar font-lock-constant-face 'font-lock-constant-face |
| 1618 | "Face name to use for constant and label names.") |
| 1619 | |
| 1620 | (defvar font-lock-warning-face 'font-lock-warning-face |
| 1621 | "Face name to use for things that should stand out.") |
| 1622 | |
| 1623 | (defvar font-lock-reference-face 'font-lock-constant-face |
| 1624 | "This variable is obsolete. Use font-lock-constant-face.") |
| 1625 | |
| 1626 | ;; Originally face attributes were specified via `font-lock-face-attributes'. |
| 1627 | ;; Users then changed the default face attributes by setting that variable. |
| 1628 | ;; However, we try and be back-compatible and respect its value if set except |
| 1629 | ;; for faces where M-x customize has been used to save changes for the face. |
| 1630 | (when (boundp 'font-lock-face-attributes) |
| 1631 | (let ((face-attributes font-lock-face-attributes)) |
| 1632 | (while face-attributes |
| 1633 | (let* ((face-attribute (pop face-attributes)) |
| 1634 | (face (car face-attribute))) |
| 1635 | ;; Rustle up a `defface' SPEC from a `font-lock-face-attributes' entry. |
| 1636 | (unless (get face 'saved-face) |
| 1637 | (let ((foreground (nth 1 face-attribute)) |
| 1638 | (background (nth 2 face-attribute)) |
| 1639 | (bold-p (nth 3 face-attribute)) |
| 1640 | (italic-p (nth 4 face-attribute)) |
| 1641 | (underline-p (nth 5 face-attribute)) |
| 1642 | face-spec) |
| 1643 | (when foreground |
| 1644 | (setq face-spec (cons ':foreground (cons foreground face-spec)))) |
| 1645 | (when background |
| 1646 | (setq face-spec (cons ':background (cons background face-spec)))) |
| 1647 | (when bold-p |
| 1648 | (setq face-spec (append '(:bold t) face-spec))) |
| 1649 | (when italic-p |
| 1650 | (setq face-spec (append '(:italic t) face-spec))) |
| 1651 | (when underline-p |
| 1652 | (setq face-spec (append '(:underline t) face-spec))) |
| 1653 | (custom-declare-face face (list (list t face-spec)) nil))))))) |
| 1654 | |
| 1655 | ;; But now we do it the custom way. Note that `defface' will not overwrite any |
| 1656 | ;; faces declared above via `custom-declare-face'. |
| 1657 | (defface font-lock-comment-face |
| 1658 | '((((class grayscale) (background light)) |
| 1659 | (:foreground "DimGray" :bold t :italic t)) |
| 1660 | (((class grayscale) (background dark)) |
| 1661 | (:foreground "LightGray" :bold t :italic t)) |
| 1662 | (((class color) (background light)) (:foreground "Firebrick")) |
| 1663 | (((class color) (background dark)) (:foreground "OrangeRed")) |
| 1664 | (t (:bold t :italic t))) |
| 1665 | "Font Lock mode face used to highlight comments." |
| 1666 | :group 'font-lock-highlighting-faces) |
| 1667 | |
| 1668 | (defface font-lock-string-face |
| 1669 | '((((class grayscale) (background light)) (:foreground "DimGray" :italic t)) |
| 1670 | (((class grayscale) (background dark)) (:foreground "LightGray" :italic t)) |
| 1671 | (((class color) (background light)) (:foreground "RosyBrown")) |
| 1672 | (((class color) (background dark)) (:foreground "LightSalmon")) |
| 1673 | (t (:italic t))) |
| 1674 | "Font Lock mode face used to highlight strings." |
| 1675 | :group 'font-lock-highlighting-faces) |
| 1676 | |
| 1677 | (defface font-lock-keyword-face |
| 1678 | '((((class grayscale) (background light)) (:foreground "LightGray" :bold t)) |
| 1679 | (((class grayscale) (background dark)) (:foreground "DimGray" :bold t)) |
| 1680 | (((class color) (background light)) (:foreground "Purple")) |
| 1681 | (((class color) (background dark)) (:foreground "Cyan")) |
| 1682 | (t (:bold t))) |
| 1683 | "Font Lock mode face used to highlight keywords." |
| 1684 | :group 'font-lock-highlighting-faces) |
| 1685 | |
| 1686 | (defface font-lock-builtin-face |
| 1687 | '((((class grayscale) (background light)) (:foreground "LightGray" :bold t)) |
| 1688 | (((class grayscale) (background dark)) (:foreground "DimGray" :bold t)) |
| 1689 | (((class color) (background light)) (:foreground "Orchid")) |
| 1690 | (((class color) (background dark)) (:foreground "LightSteelBlue")) |
| 1691 | (t (:bold t))) |
| 1692 | "Font Lock mode face used to highlight builtins." |
| 1693 | :group 'font-lock-highlighting-faces) |
| 1694 | |
| 1695 | (defface font-lock-function-name-face |
| 1696 | '((((class color) (background light)) (:foreground "Blue")) |
| 1697 | (((class color) (background dark)) (:foreground "LightSkyBlue")) |
| 1698 | (t (:inverse-video t :bold t))) |
| 1699 | "Font Lock mode face used to highlight function names." |
| 1700 | :group 'font-lock-highlighting-faces) |
| 1701 | |
| 1702 | (defface font-lock-variable-name-face |
| 1703 | '((((class grayscale) (background light)) |
| 1704 | (:foreground "Gray90" :bold t :italic t)) |
| 1705 | (((class grayscale) (background dark)) |
| 1706 | (:foreground "DimGray" :bold t :italic t)) |
| 1707 | (((class color) (background light)) (:foreground "DarkGoldenrod")) |
| 1708 | (((class color) (background dark)) (:foreground "LightGoldenrod")) |
| 1709 | (t (:bold t :italic t))) |
| 1710 | "Font Lock mode face used to highlight variable names." |
| 1711 | :group 'font-lock-highlighting-faces) |
| 1712 | |
| 1713 | (defface font-lock-type-face |
| 1714 | '((((class grayscale) (background light)) (:foreground "Gray90" :bold t)) |
| 1715 | (((class grayscale) (background dark)) (:foreground "DimGray" :bold t)) |
| 1716 | (((class color) (background light)) (:foreground "ForestGreen")) |
| 1717 | (((class color) (background dark)) (:foreground "PaleGreen")) |
| 1718 | (t (:bold t :underline t))) |
| 1719 | "Font Lock mode face used to highlight type and classes." |
| 1720 | :group 'font-lock-highlighting-faces) |
| 1721 | |
| 1722 | (defface font-lock-constant-face |
| 1723 | '((((class grayscale) (background light)) |
| 1724 | (:foreground "LightGray" :bold t :underline t)) |
| 1725 | (((class grayscale) (background dark)) |
| 1726 | (:foreground "Gray50" :bold t :underline t)) |
| 1727 | (((class color) (background light)) (:foreground "CadetBlue")) |
| 1728 | (((class color) (background dark)) (:foreground "Aquamarine")) |
| 1729 | (t (:bold t :underline t))) |
| 1730 | "Font Lock mode face used to highlight constants and labels." |
| 1731 | :group 'font-lock-highlighting-faces) |
| 1732 | |
| 1733 | (defface font-lock-warning-face |
| 1734 | '((((class color) (background light)) (:foreground "Red" :bold t)) |
| 1735 | (((class color) (background dark)) (:foreground "Pink" :bold t)) |
| 1736 | (t (:inverse-video t :bold t))) |
| 1737 | "Font Lock mode face used to highlight warnings." |
| 1738 | :group 'font-lock-highlighting-faces) |
| 1739 | |
| 1740 | ;;; End of Colour etc. support. |
| 1741 | \f |
| 1742 | ;;; Menu support. |
| 1743 | |
| 1744 | ;; This section of code is commented out because Emacs does not have real menu |
| 1745 | ;; buttons. (We can mimic them by putting "( ) " or "(X) " at the beginning of |
| 1746 | ;; the menu entry text, but with Xt it looks both ugly and embarrassingly |
| 1747 | ;; amateur.) If/When Emacs gets real menus buttons, put in menu-bar.el after |
| 1748 | ;; the entry for "Text Properties" something like: |
| 1749 | ;; |
| 1750 | ;; (define-key menu-bar-edit-menu [font-lock] |
| 1751 | ;; (cons "Syntax Highlighting" font-lock-menu)) |
| 1752 | ;; |
| 1753 | ;; and remove a single ";" from the beginning of each line in the rest of this |
| 1754 | ;; section. Probably the mechanism for telling the menu code what are menu |
| 1755 | ;; buttons and when they are on or off needs tweaking. I have assumed that the |
| 1756 | ;; mechanism is via `menu-toggle' and `menu-selected' symbol properties. sm. |
| 1757 | |
| 1758 | ;;;;###autoload |
| 1759 | ;(progn |
| 1760 | ; ;; Make the Font Lock menu. |
| 1761 | ; (defvar font-lock-menu (make-sparse-keymap "Syntax Highlighting")) |
| 1762 | ; ;; Add the menu items in reverse order. |
| 1763 | ; (define-key font-lock-menu [fontify-less] |
| 1764 | ; '("Less In Current Buffer" . font-lock-fontify-less)) |
| 1765 | ; (define-key font-lock-menu [fontify-more] |
| 1766 | ; '("More In Current Buffer" . font-lock-fontify-more)) |
| 1767 | ; (define-key font-lock-menu [font-lock-sep] |
| 1768 | ; '("--")) |
| 1769 | ; (define-key font-lock-menu [font-lock-mode] |
| 1770 | ; '("In Current Buffer" . font-lock-mode)) |
| 1771 | ; (define-key font-lock-menu [global-font-lock-mode] |
| 1772 | ; '("In All Buffers" . global-font-lock-mode))) |
| 1773 | ; |
| 1774 | ;;;;###autoload |
| 1775 | ;(progn |
| 1776 | ; ;; We put the appropriate `menu-enable' etc. symbol property values on when |
| 1777 | ; ;; font-lock.el is loaded, so we don't need to autoload the three variables. |
| 1778 | ; (put 'global-font-lock-mode 'menu-toggle t) |
| 1779 | ; (put 'font-lock-mode 'menu-toggle t) |
| 1780 | ; (put 'font-lock-fontify-more 'menu-enable '(identity)) |
| 1781 | ; (put 'font-lock-fontify-less 'menu-enable '(identity))) |
| 1782 | ; |
| 1783 | ;;; Put the appropriate symbol property values on now. See above. |
| 1784 | ;(put 'global-font-lock-mode 'menu-selected 'global-font-lock-mode) |
| 1785 | ;(put 'font-lock-mode 'menu-selected 'font-lock-mode) |
| 1786 | ;(put 'font-lock-fontify-more 'menu-enable '(nth 2 font-lock-fontify-level)) |
| 1787 | ;(put 'font-lock-fontify-less 'menu-enable '(nth 1 font-lock-fontify-level)) |
| 1788 | ; |
| 1789 | ;(defvar font-lock-fontify-level nil) ; For less/more fontification. |
| 1790 | ; |
| 1791 | ;(defun font-lock-fontify-level (level) |
| 1792 | ; (let ((font-lock-maximum-decoration level)) |
| 1793 | ; (when font-lock-mode |
| 1794 | ; (font-lock-mode)) |
| 1795 | ; (font-lock-mode) |
| 1796 | ; (when font-lock-verbose |
| 1797 | ; (message "Fontifying %s... level %d" (buffer-name) level)))) |
| 1798 | ; |
| 1799 | ;(defun font-lock-fontify-less () |
| 1800 | ; "Fontify the current buffer with less decoration. |
| 1801 | ;See `font-lock-maximum-decoration'." |
| 1802 | ; (interactive) |
| 1803 | ; ;; Check in case we get called interactively. |
| 1804 | ; (if (nth 1 font-lock-fontify-level) |
| 1805 | ; (font-lock-fontify-level (1- (car font-lock-fontify-level))) |
| 1806 | ; (error "No less decoration"))) |
| 1807 | ; |
| 1808 | ;(defun font-lock-fontify-more () |
| 1809 | ; "Fontify the current buffer with more decoration. |
| 1810 | ;See `font-lock-maximum-decoration'." |
| 1811 | ; (interactive) |
| 1812 | ; ;; Check in case we get called interactively. |
| 1813 | ; (if (nth 2 font-lock-fontify-level) |
| 1814 | ; (font-lock-fontify-level (1+ (car font-lock-fontify-level))) |
| 1815 | ; (error "No more decoration"))) |
| 1816 | ; |
| 1817 | ;;; This should be called by `font-lock-set-defaults'. |
| 1818 | ;(defun font-lock-set-menu () |
| 1819 | ; ;; Activate less/more fontification entries if there are multiple levels for |
| 1820 | ; ;; the current buffer. Sets `font-lock-fontify-level' to be of the form |
| 1821 | ; ;; (CURRENT-LEVEL IS-LOWER-LEVEL-P IS-HIGHER-LEVEL-P) for menu activation. |
| 1822 | ; (let ((keywords (or (nth 0 font-lock-defaults) |
| 1823 | ; (nth 1 (assq major-mode font-lock-defaults-alist)))) |
| 1824 | ; (level (font-lock-value-in-major-mode font-lock-maximum-decoration))) |
| 1825 | ; (make-local-variable 'font-lock-fontify-level) |
| 1826 | ; (if (or (symbolp keywords) (= (length keywords) 1)) |
| 1827 | ; (font-lock-unset-menu) |
| 1828 | ; (cond ((eq level t) |
| 1829 | ; (setq level (1- (length keywords)))) |
| 1830 | ; ((or (null level) (zerop level)) |
| 1831 | ; ;; The default level is usually, but not necessarily, level 1. |
| 1832 | ; (setq level (- (length keywords) |
| 1833 | ; (length (member (eval (car keywords)) |
| 1834 | ; (mapcar 'eval (cdr keywords)))))))) |
| 1835 | ; (setq font-lock-fontify-level (list level (> level 1) |
| 1836 | ; (< level (1- (length keywords)))))))) |
| 1837 | ; |
| 1838 | ;;; This should be called by `font-lock-unset-defaults'. |
| 1839 | ;(defun font-lock-unset-menu () |
| 1840 | ; ;; Deactivate less/more fontification entries. |
| 1841 | ; (setq font-lock-fontify-level nil)) |
| 1842 | |
| 1843 | ;;; End of Menu support. |
| 1844 | \f |
| 1845 | ;;; Various regexp information shared by several modes. |
| 1846 | ;;; Information specific to a single mode should go in its load library. |
| 1847 | |
| 1848 | ;; Font Lock support for C, C++, Objective-C and Java modes will one day be in |
| 1849 | ;; some cc-font.el (and required by cc-mode.el). However, the below function |
| 1850 | ;; should stay in font-lock.el, since it is used by other libraries. sm. |
| 1851 | |
| 1852 | (defun font-lock-match-c-style-declaration-item-and-skip-to-next (limit) |
| 1853 | "Match, and move over, any declaration/definition item after point. |
| 1854 | Matches after point, but ignores leading whitespace and `*' characters. |
| 1855 | Does not move further than LIMIT. |
| 1856 | |
| 1857 | The expected syntax of a declaration/definition item is `word' (preceded by |
| 1858 | optional whitespace and `*' characters and proceeded by optional whitespace) |
| 1859 | optionally followed by a `('. Everything following the item (but belonging to |
| 1860 | it) is expected to by skip-able by `scan-sexps', and items are expected to be |
| 1861 | separated with a `,' and to be terminated with a `;'. |
| 1862 | |
| 1863 | Thus the regexp matches after point: word ( |
| 1864 | ^^^^ ^ |
| 1865 | Where the match subexpressions are: 1 2 |
| 1866 | |
| 1867 | The item is delimited by (match-beginning 1) and (match-end 1). |
| 1868 | If (match-beginning 2) is non-nil, the item is followed by a `('. |
| 1869 | |
| 1870 | This function could be MATCHER in a MATCH-ANCHORED `font-lock-keywords' item." |
| 1871 | (when (looking-at "[ \t*]*\\(\\sw+\\)[ \t]*\\((\\)?") |
| 1872 | (save-match-data |
| 1873 | (condition-case nil |
| 1874 | (save-restriction |
| 1875 | ;; Restrict to the end of line, currently guaranteed to be LIMIT. |
| 1876 | (narrow-to-region (point-min) limit) |
| 1877 | (goto-char (match-end 1)) |
| 1878 | ;; Move over any item value, etc., to the next item. |
| 1879 | (while (not (looking-at "[ \t]*\\(\\(,\\)\\|;\\|$\\)")) |
| 1880 | (goto-char (or (scan-sexps (point) 1) (point-max)))) |
| 1881 | (goto-char (match-end 2))) |
| 1882 | (error t))))) |
| 1883 | \f |
| 1884 | ;; Lisp. |
| 1885 | |
| 1886 | (defconst lisp-font-lock-keywords-1 |
| 1887 | (eval-when-compile |
| 1888 | (list |
| 1889 | ;; |
| 1890 | ;; Definitions. |
| 1891 | (list (concat "(\\(def\\(" |
| 1892 | ;; Function declarations. |
| 1893 | "\\(advice\\|alias\\|generic\\|macro\\*?\\|method\\|" |
| 1894 | "setf\\|subst\\*?\\|un\\*?\\|" |
| 1895 | "ine-\\(condition\\|derived-mode\\|function\\|" |
| 1896 | "method-combination\\|setf-expander\\|skeleton\\|widget\\|" |
| 1897 | "\\(compiler\\|modify\\|symbol\\)-macro\\)\\)\\|" |
| 1898 | ;; Variable declarations. |
| 1899 | "\\(const\\(ant\\)?\\|custom\\|face\\|parameter\\|var\\)\\|" |
| 1900 | ;; Structure declarations. |
| 1901 | "\\(class\\|group\\|package\\|struct\\|type\\)" |
| 1902 | "\\)\\)\\>" |
| 1903 | ;; Any whitespace and defined object. |
| 1904 | "[ \t'\(]*" |
| 1905 | "\\(\\sw+\\)?") |
| 1906 | '(1 font-lock-keyword-face) |
| 1907 | '(9 (cond ((match-beginning 3) font-lock-function-name-face) |
| 1908 | ((match-beginning 6) font-lock-variable-name-face) |
| 1909 | (t font-lock-type-face)) |
| 1910 | nil t)) |
| 1911 | ;; |
| 1912 | ;; Emacs Lisp autoload cookies. |
| 1913 | '("^;;;###\\(autoload\\)\\>" 1 font-lock-warning-face prepend) |
| 1914 | )) |
| 1915 | "Subdued level highlighting for Lisp modes.") |
| 1916 | |
| 1917 | (defconst lisp-font-lock-keywords-2 |
| 1918 | (append lisp-font-lock-keywords-1 |
| 1919 | (eval-when-compile |
| 1920 | (list |
| 1921 | ;; |
| 1922 | ;; Control structures. Emacs Lisp forms. |
| 1923 | (cons (concat |
| 1924 | "(" (regexp-opt |
| 1925 | '("cond" "if" "while" "let" "let*" |
| 1926 | "prog" "progn" "progv" "prog1" "prog2" "prog*" |
| 1927 | "inline" "lambda" "save-restriction" "save-excursion" |
| 1928 | "save-window-excursion" "save-selected-window" |
| 1929 | "save-match-data" "save-current-buffer" "unwind-protect" |
| 1930 | "condition-case" "track-mouse" |
| 1931 | "eval-after-load" "eval-and-compile" "eval-when-compile" |
| 1932 | "eval-when" |
| 1933 | "with-current-buffer" "with-electric-help" |
| 1934 | "with-output-to-string" "with-output-to-temp-buffer" |
| 1935 | "with-temp-buffer" "with-temp-file" "with-temp-message" |
| 1936 | "with-timeout") t) |
| 1937 | "\\>") |
| 1938 | 1) |
| 1939 | ;; |
| 1940 | ;; Control structures. Common Lisp forms. |
| 1941 | (cons (concat |
| 1942 | "(" (regexp-opt |
| 1943 | '("when" "unless" "case" "ecase" "typecase" "etypecase" |
| 1944 | "ccase" "ctypecase" "handler-case" "handler-bind" |
| 1945 | "restart-bind" "restart-case" "in-package" |
| 1946 | "cerror" "break" "ignore-errors" |
| 1947 | "loop" "do" "do*" "dotimes" "dolist" "the" "locally" |
| 1948 | "proclaim" "declaim" "declare" "symbol-macrolet" |
| 1949 | "lexical-let" "lexical-let*" "flet" "labels" "compiler-let" |
| 1950 | "destructuring-bind" "macrolet" "tagbody" "block" |
| 1951 | "return" "return-from") t) |
| 1952 | "\\>") |
| 1953 | 1) |
| 1954 | ;; |
| 1955 | ;; Exit/Feature symbols as constants. |
| 1956 | (list (concat "(\\(catch\\|throw\\|featurep\\|provide\\|require\\)\\>" |
| 1957 | "[ \t']*\\(\\sw+\\)?") |
| 1958 | '(1 font-lock-keyword-face) |
| 1959 | '(2 font-lock-constant-face nil t)) |
| 1960 | ;; |
| 1961 | ;; Erroneous structures. |
| 1962 | '("(\\(abort\\|assert\\|error\\|signal\\)\\>" 1 font-lock-warning-face) |
| 1963 | ;; |
| 1964 | ;; Words inside \\[] tend to be for `substitute-command-keys'. |
| 1965 | '("\\\\\\\\\\[\\(\\sw+\\)]" 1 font-lock-constant-face prepend) |
| 1966 | ;; |
| 1967 | ;; Words inside `' tend to be symbol names. |
| 1968 | '("`\\(\\sw\\sw+\\)'" 1 font-lock-constant-face prepend) |
| 1969 | ;; |
| 1970 | ;; Constant values. |
| 1971 | '("\\<:\\sw\\sw+\\>" 0 font-lock-builtin-face) |
| 1972 | ;; |
| 1973 | ;; ELisp and CLisp `&' keywords as types. |
| 1974 | '("\\<\\&\\sw+\\>" . font-lock-type-face) |
| 1975 | ))) |
| 1976 | "Gaudy level highlighting for Lisp modes.") |
| 1977 | |
| 1978 | (defvar lisp-font-lock-keywords lisp-font-lock-keywords-1 |
| 1979 | "Default expressions to highlight in Lisp modes.") |
| 1980 | \f |
| 1981 | ;; TeX. |
| 1982 | |
| 1983 | ;(defvar tex-font-lock-keywords |
| 1984 | ; ;; Regexps updated with help from Ulrik Dickow <dickow@nbi.dk>. |
| 1985 | ; '(("\\\\\\(begin\\|end\\|newcommand\\){\\([a-zA-Z0-9\\*]+\\)}" |
| 1986 | ; 2 font-lock-function-name-face) |
| 1987 | ; ("\\\\\\(cite\\|label\\|pageref\\|ref\\){\\([^} \t\n]+\\)}" |
| 1988 | ; 2 font-lock-constant-face) |
| 1989 | ; ;; It seems a bit dubious to use `bold' and `italic' faces since we might |
| 1990 | ; ;; not be able to display those fonts. |
| 1991 | ; ("{\\\\bf\\([^}]+\\)}" 1 'bold keep) |
| 1992 | ; ("{\\\\\\(em\\|it\\|sl\\)\\([^}]+\\)}" 2 'italic keep) |
| 1993 | ; ("\\\\\\([a-zA-Z@]+\\|.\\)" . font-lock-keyword-face) |
| 1994 | ; ("^[ \t\n]*\\\\def[\\\\@]\\(\\w+\\)" 1 font-lock-function-name-face keep)) |
| 1995 | ; ;; Rewritten and extended for LaTeX2e by Ulrik Dickow <dickow@nbi.dk>. |
| 1996 | ; '(("\\\\\\(begin\\|end\\|newcommand\\){\\([a-zA-Z0-9\\*]+\\)}" |
| 1997 | ; 2 font-lock-function-name-face) |
| 1998 | ; ("\\\\\\(cite\\|label\\|pageref\\|ref\\){\\([^} \t\n]+\\)}" |
| 1999 | ; 2 font-lock-constant-face) |
| 2000 | ; ("^[ \t]*\\\\def\\\\\\(\\(\\w\\|@\\)+\\)" 1 font-lock-function-name-face) |
| 2001 | ; "\\\\\\([a-zA-Z@]+\\|.\\)" |
| 2002 | ; ;; It seems a bit dubious to use `bold' and `italic' faces since we might |
| 2003 | ; ;; not be able to display those fonts. |
| 2004 | ; ;; LaTeX2e: \emph{This is emphasized}. |
| 2005 | ; ("\\\\emph{\\([^}]+\\)}" 1 'italic keep) |
| 2006 | ; ;; LaTeX2e: \textbf{This is bold}, \textit{...}, \textsl{...} |
| 2007 | ; ("\\\\text\\(\\(bf\\)\\|it\\|sl\\){\\([^}]+\\)}" |
| 2008 | ; 3 (if (match-beginning 2) 'bold 'italic) keep) |
| 2009 | ; ;; Old-style bf/em/it/sl. Stop at `\\' and un-escaped `&', for tables. |
| 2010 | ; ("\\\\\\(\\(bf\\)\\|em\\|it\\|sl\\)\\>\\(\\([^}&\\]\\|\\\\[^\\]\\)+\\)" |
| 2011 | ; 3 (if (match-beginning 2) 'bold 'italic) keep)) |
| 2012 | |
| 2013 | ;; Rewritten with the help of Alexandra Bac <abac@welcome.disi.unige.it>. |
| 2014 | (defconst tex-font-lock-keywords-1 |
| 2015 | (eval-when-compile |
| 2016 | (let* (;; |
| 2017 | ;; Names of commands whose arg should be fontified as heading, etc. |
| 2018 | (headings (regexp-opt '("title" "begin" "end") t)) |
| 2019 | ;; These commands have optional args. |
| 2020 | (headings-opt (regexp-opt |
| 2021 | '("chapter" "part" |
| 2022 | "section" "subsection" "subsubsection" |
| 2023 | "section*" "subsection*" "subsubsection*" |
| 2024 | "paragraph" "subparagraph" "subsubparagraph" |
| 2025 | "paragraph*" "subparagraph*" "subsubparagraph*" |
| 2026 | "newcommand" "renewcommand" "newenvironment" |
| 2027 | "newtheorem" |
| 2028 | "newcommand*" "renewcommand*" "newenvironment*" |
| 2029 | "newtheorem*") |
| 2030 | t)) |
| 2031 | (variables (regexp-opt |
| 2032 | '("newcounter" "newcounter*" "setcounter" "addtocounter" |
| 2033 | "setlength" "addtolength" "settowidth") |
| 2034 | t)) |
| 2035 | (includes (regexp-opt |
| 2036 | '("input" "include" "includeonly" "bibliography" |
| 2037 | "epsfig" "psfig" "epsf") |
| 2038 | t)) |
| 2039 | (includes-opt (regexp-opt |
| 2040 | '("nofiles" "usepackage" |
| 2041 | "includegraphics" "includegraphics*") |
| 2042 | t)) |
| 2043 | ;; Miscellany. |
| 2044 | (slash "\\\\") |
| 2045 | (opt "\\(\\[[^]]*\\]\\)?") |
| 2046 | (arg "{\\([^}]+\\)") |
| 2047 | (opt-depth (regexp-opt-depth opt)) |
| 2048 | (arg-depth (regexp-opt-depth arg)) |
| 2049 | ) |
| 2050 | (list |
| 2051 | ;; |
| 2052 | ;; Heading args. |
| 2053 | (list (concat slash headings arg) |
| 2054 | (+ (regexp-opt-depth headings) arg-depth) |
| 2055 | 'font-lock-function-name-face) |
| 2056 | (list (concat slash headings-opt opt arg) |
| 2057 | (+ (regexp-opt-depth headings-opt) opt-depth arg-depth) |
| 2058 | 'font-lock-function-name-face) |
| 2059 | ;; |
| 2060 | ;; Variable args. |
| 2061 | (list (concat slash variables arg) |
| 2062 | (+ (regexp-opt-depth variables) arg-depth) |
| 2063 | 'font-lock-variable-name-face) |
| 2064 | ;; |
| 2065 | ;; Include args. |
| 2066 | (list (concat slash includes arg) |
| 2067 | (+ (regexp-opt-depth includes) arg-depth) |
| 2068 | 'font-lock-builtin-face) |
| 2069 | (list (concat slash includes-opt opt arg) |
| 2070 | (+ (regexp-opt-depth includes-opt) opt-depth arg-depth) |
| 2071 | 'font-lock-builtin-face) |
| 2072 | ;; |
| 2073 | ;; Definitions. I think. |
| 2074 | '("^[ \t]*\\\\def\\\\\\(\\(\\w\\|@\\)+\\)" |
| 2075 | 1 font-lock-function-name-face) |
| 2076 | ))) |
| 2077 | "Subdued expressions to highlight in TeX modes.") |
| 2078 | |
| 2079 | (defconst tex-font-lock-keywords-2 |
| 2080 | (append tex-font-lock-keywords-1 |
| 2081 | (eval-when-compile |
| 2082 | (let* (;; |
| 2083 | ;; Names of commands whose arg should be fontified with fonts. |
| 2084 | (bold (regexp-opt '("bf" "textbf" "textsc" "textup" |
| 2085 | "boldsymbol" "pmb") t)) |
| 2086 | (italic (regexp-opt '("it" "textit" "textsl" "emph") t)) |
| 2087 | (type (regexp-opt '("texttt" "textmd" "textrm" "textsf") t)) |
| 2088 | ;; |
| 2089 | ;; Names of commands whose arg should be fontified as a citation. |
| 2090 | (citations (regexp-opt |
| 2091 | '("label" "ref" "pageref" "vref" "eqref") |
| 2092 | t)) |
| 2093 | (citations-opt (regexp-opt |
| 2094 | '("cite" "nocite" "caption" "index" "glossary" |
| 2095 | "footnote" "footnotemark" "footnotetext") |
| 2096 | t)) |
| 2097 | ;; |
| 2098 | ;; Names of commands that should be fontified. |
| 2099 | (specials (regexp-opt |
| 2100 | '("\\" |
| 2101 | "linebreak" "nolinebreak" "pagebreak" "nopagebreak" |
| 2102 | "newline" "newpage" "clearpage" "cleardoublepage" |
| 2103 | "displaybreak" "allowdisplaybreaks" "enlargethispage") |
| 2104 | t)) |
| 2105 | (general "\\([a-zA-Z@]+\\**\\|[^ \t\n]\\)") |
| 2106 | ;; |
| 2107 | ;; Miscellany. |
| 2108 | (slash "\\\\") |
| 2109 | (opt "\\(\\[[^]]*\\]\\)?") |
| 2110 | (arg "{\\([^}]+\\)") |
| 2111 | (opt-depth (regexp-opt-depth opt)) |
| 2112 | (arg-depth (regexp-opt-depth arg)) |
| 2113 | ) |
| 2114 | (list |
| 2115 | ;; |
| 2116 | ;; Citation args. |
| 2117 | (list (concat slash citations arg) |
| 2118 | (+ (regexp-opt-depth citations) arg-depth) |
| 2119 | 'font-lock-constant-face) |
| 2120 | (list (concat slash citations-opt opt arg) |
| 2121 | (+ (regexp-opt-depth citations-opt) opt-depth arg-depth) |
| 2122 | 'font-lock-constant-face) |
| 2123 | ;; |
| 2124 | ;; Command names, special and general. |
| 2125 | (cons (concat slash specials) 'font-lock-warning-face) |
| 2126 | (concat slash general) |
| 2127 | ;; |
| 2128 | ;; Font environments. It seems a bit dubious to use `bold' etc. faces |
| 2129 | ;; since we might not be able to display those fonts. |
| 2130 | (list (concat slash bold arg) |
| 2131 | (+ (regexp-opt-depth bold) arg-depth) |
| 2132 | '(quote bold) 'keep) |
| 2133 | (list (concat slash italic arg) |
| 2134 | (+ (regexp-opt-depth italic) arg-depth) |
| 2135 | '(quote italic) 'keep) |
| 2136 | (list (concat slash type arg) |
| 2137 | (+ (regexp-opt-depth type) arg-depth) |
| 2138 | '(quote bold-italic) 'keep) |
| 2139 | ;; |
| 2140 | ;; Old-style bf/em/it/sl. Stop at `\\' and un-escaped `&', for tables. |
| 2141 | (list (concat "\\\\\\(\\(bf\\)\\|em\\|it\\|sl\\)\\>" |
| 2142 | "\\(\\([^}&\\]\\|\\\\[^\\]\\)+\\)") |
| 2143 | 3 '(if (match-beginning 2) 'bold 'italic) 'keep) |
| 2144 | )))) |
| 2145 | "Gaudy expressions to highlight in TeX modes.") |
| 2146 | |
| 2147 | (defvar tex-font-lock-keywords tex-font-lock-keywords-1 |
| 2148 | "Default expressions to highlight in TeX modes.") |
| 2149 | \f |
| 2150 | ;;; User choices. |
| 2151 | |
| 2152 | ;; These provide a means to fontify types not defined by the language. Those |
| 2153 | ;; types might be the user's own or they might be generally accepted and used. |
| 2154 | ;; Generally accepted types are used to provide default variable values. |
| 2155 | |
| 2156 | (define-widget 'font-lock-extra-types-widget 'radio |
| 2157 | "Widget `:type' for members of the custom group `font-lock-extra-types'. |
| 2158 | Members should `:load' the package `font-lock' to use this widget." |
| 2159 | :args '((const :tag "none" nil) |
| 2160 | (repeat :tag "types" regexp))) |
| 2161 | |
| 2162 | (defcustom c-font-lock-extra-types '("FILE" "\\sw+_t") |
| 2163 | "*List of extra types to fontify in C mode. |
| 2164 | Each list item should be a regexp not containing word-delimiters. |
| 2165 | For example, a value of (\"FILE\" \"\\\\sw+_t\") means the word FILE and words |
| 2166 | ending in _t are treated as type names. |
| 2167 | |
| 2168 | The value of this variable is used when Font Lock mode is turned on." |
| 2169 | :type 'font-lock-extra-types-widget |
| 2170 | :group 'font-lock-extra-types) |
| 2171 | |
| 2172 | (defcustom c++-font-lock-extra-types |
| 2173 | '("\\sw+_t" |
| 2174 | "\\([iof]\\|str\\)+stream\\(buf\\)?" "ios" |
| 2175 | "string" "rope" |
| 2176 | "list" "slist" |
| 2177 | "deque" "vector" "bit_vector" |
| 2178 | "set" "multiset" |
| 2179 | "map" "multimap" |
| 2180 | "hash\\(_\\(m\\(ap\\|ulti\\(map\\|set\\)\\)\\|set\\)\\)?" |
| 2181 | "stack" "queue" "priority_queue" |
| 2182 | "iterator" "const_iterator" "reverse_iterator" "const_reverse_iterator" |
| 2183 | "reference" "const_reference") |
| 2184 | "*List of extra types to fontify in C++ mode. |
| 2185 | Each list item should be a regexp not containing word-delimiters. |
| 2186 | For example, a value of (\"string\") means the word string is treated as a type |
| 2187 | name. |
| 2188 | |
| 2189 | The value of this variable is used when Font Lock mode is turned on." |
| 2190 | :type 'font-lock-extra-types-widget |
| 2191 | :group 'font-lock-extra-types) |
| 2192 | |
| 2193 | (defcustom objc-font-lock-extra-types '("Class" "BOOL" "IMP" "SEL") |
| 2194 | "*List of extra types to fontify in Objective-C mode. |
| 2195 | Each list item should be a regexp not containing word-delimiters. |
| 2196 | For example, a value of (\"Class\" \"BOOL\" \"IMP\" \"SEL\") means the words |
| 2197 | Class, BOOL, IMP and SEL are treated as type names. |
| 2198 | |
| 2199 | The value of this variable is used when Font Lock mode is turned on." |
| 2200 | :type 'font-lock-extra-types-widget |
| 2201 | :group 'font-lock-extra-types) |
| 2202 | |
| 2203 | (defcustom java-font-lock-extra-types |
| 2204 | '("[A-Z\300-\326\330-\337]\\sw*[a-z]\\sw*") |
| 2205 | "*List of extra types to fontify in Java mode. |
| 2206 | Each list item should be a regexp not containing word-delimiters. |
| 2207 | For example, a value of (\"[A-Z\300-\326\330-\337]\\\\sw*[a-z]\\\\sw*\") means capitalised |
| 2208 | words (and words conforming to the Java id spec) are treated as type names. |
| 2209 | |
| 2210 | The value of this variable is used when Font Lock mode is turned on." |
| 2211 | :type 'font-lock-extra-types-widget |
| 2212 | :group 'font-lock-extra-types) |
| 2213 | \f |
| 2214 | ;;; C. |
| 2215 | |
| 2216 | ;; [Murmur murmur murmur] Maestro, drum-roll please... [Murmur murmur murmur.] |
| 2217 | ;; Ahem. [Murmur murmur murmur] Lay-dees an Gennel-men. [Murmur murmur shhh!] |
| 2218 | ;; I am most proud and humbly honoured today [murmur murmur cough] to present |
| 2219 | ;; to you good people, the winner of the Second Millennium Award for The Most |
| 2220 | ;; Hairy Language Syntax. [Ahhh!] All rise please. [Shuffle shuffle |
| 2221 | ;; shuffle.] And a round of applause please. For... The C Language! [Roar.] |
| 2222 | ;; |
| 2223 | ;; Thank you... You are too kind... It is with a feeling of great privilege |
| 2224 | ;; and indeed emotion [sob] that I accept this award. It has been a long hard |
| 2225 | ;; road. But we know our destiny. And our future. For we must not rest. |
| 2226 | ;; There are more tokens to overload, more shoehorn, more methodologies. But |
| 2227 | ;; more is a plus! [Ha ha ha.] And more means plus! [Ho ho ho.] The future |
| 2228 | ;; is C++! [Ohhh!] The Third Millennium Award... Will be ours! [Roar.] |
| 2229 | |
| 2230 | (defconst c-font-lock-keywords-1 nil |
| 2231 | "Subdued level highlighting for C mode.") |
| 2232 | |
| 2233 | (defconst c-font-lock-keywords-2 nil |
| 2234 | "Medium level highlighting for C mode. |
| 2235 | See also `c-font-lock-extra-types'.") |
| 2236 | |
| 2237 | (defconst c-font-lock-keywords-3 nil |
| 2238 | "Gaudy level highlighting for C mode. |
| 2239 | See also `c-font-lock-extra-types'.") |
| 2240 | |
| 2241 | (let* ((c-keywords |
| 2242 | (eval-when-compile |
| 2243 | (regexp-opt '("break" "continue" "do" "else" "for" "if" "return" |
| 2244 | "switch" "while" "sizeof" |
| 2245 | ;; Type related, but we don't do anything special. |
| 2246 | "typedef" "extern" "auto" "register" "static" |
| 2247 | "volatile" "const" |
| 2248 | ;; Dan Nicolaescu <done@gnu.org> says this is new. |
| 2249 | "restrict") t))) |
| 2250 | (c-type-specs |
| 2251 | (eval-when-compile |
| 2252 | (regexp-opt '("enum" "struct" "union") t))) |
| 2253 | (c-type-specs-depth |
| 2254 | (regexp-opt-depth c-type-specs)) |
| 2255 | (c-type-names |
| 2256 | `(mapconcat 'identity |
| 2257 | (cons |
| 2258 | (,@ (eval-when-compile |
| 2259 | (regexp-opt |
| 2260 | '("char" "short" "int" "long" "signed" "unsigned" |
| 2261 | "float" "double" "void" "complex")))) |
| 2262 | c-font-lock-extra-types) |
| 2263 | "\\|")) |
| 2264 | (c-type-names-depth |
| 2265 | `(regexp-opt-depth (,@ c-type-names))) |
| 2266 | ) |
| 2267 | (setq c-font-lock-keywords-1 |
| 2268 | (list |
| 2269 | ;; |
| 2270 | ;; These are all anchored at the beginning of line for speed. |
| 2271 | ;; Note that `c++-font-lock-keywords-1' depends on `c-font-lock-keywords-1'. |
| 2272 | ;; |
| 2273 | ;; Fontify function name definitions (GNU style; without type on line). |
| 2274 | '("^\\(\\sw+\\)[ \t]*(" 1 font-lock-function-name-face) |
| 2275 | ;; |
| 2276 | ;; Fontify error directives. |
| 2277 | '("^#[ \t]*error[ \t]+\\(.+\\)" 1 font-lock-warning-face prepend) |
| 2278 | ;; |
| 2279 | ;; Fontify filenames in #include <...> preprocessor directives as strings. |
| 2280 | '("^#[ \t]*\\(import\\|include\\)[ \t]*\\(<[^>\"\n]*>?\\)" |
| 2281 | 2 font-lock-string-face) |
| 2282 | ;; |
| 2283 | ;; Fontify function macro names. |
| 2284 | '("^#[ \t]*define[ \t]+\\(\\sw+\\)(" 1 font-lock-function-name-face) |
| 2285 | ;; |
| 2286 | ;; Fontify symbol names in #elif or #if ... defined preprocessor directives. |
| 2287 | '("^#[ \t]*\\(elif\\|if\\)\\>" |
| 2288 | ("\\<\\(defined\\)\\>[ \t]*(?\\(\\sw+\\)?" nil nil |
| 2289 | (1 font-lock-builtin-face) (2 font-lock-variable-name-face nil t))) |
| 2290 | ;; |
| 2291 | ;; Fontify otherwise as symbol names, and the preprocessor directive names. |
| 2292 | '("^#[ \t]*\\(\\sw+\\)\\>[ \t!]*\\(\\sw+\\)?" |
| 2293 | (1 font-lock-builtin-face) (2 font-lock-variable-name-face nil t)) |
| 2294 | )) |
| 2295 | |
| 2296 | (setq c-font-lock-keywords-2 |
| 2297 | (append c-font-lock-keywords-1 |
| 2298 | (list |
| 2299 | ;; |
| 2300 | ;; Simple regexps for speed. |
| 2301 | ;; |
| 2302 | ;; Fontify all type names. |
| 2303 | `(eval . |
| 2304 | (cons (concat "\\<\\(" (,@ c-type-names) "\\)\\>") 'font-lock-type-face)) |
| 2305 | ;; |
| 2306 | ;; Fontify all builtin keywords (except case, default and goto; see below). |
| 2307 | (concat "\\<\\(" c-keywords "\\|" c-type-specs "\\)\\>") |
| 2308 | ;; |
| 2309 | ;; Fontify case/goto keywords and targets, and case default/goto tags. |
| 2310 | '("\\<\\(case\\|goto\\)\\>[ \t]*\\(-?\\sw+\\)?" |
| 2311 | (1 font-lock-keyword-face) (2 font-lock-constant-face nil t)) |
| 2312 | ;; Anders Lindgren <andersl@andersl.com> points out that it is quicker to |
| 2313 | ;; use MATCH-ANCHORED to effectively anchor the regexp on the left. |
| 2314 | ;; This must come after the one for keywords and targets. |
| 2315 | '(":" ("^[ \t]*\\(\\sw+\\)[ \t]*:[ \t]*$" |
| 2316 | (beginning-of-line) (end-of-line) |
| 2317 | (1 font-lock-constant-face))) |
| 2318 | ))) |
| 2319 | |
| 2320 | (setq c-font-lock-keywords-3 |
| 2321 | (append c-font-lock-keywords-2 |
| 2322 | ;; |
| 2323 | ;; More complicated regexps for more complete highlighting for types. |
| 2324 | ;; We still have to fontify type specifiers individually, as C is so hairy. |
| 2325 | (list |
| 2326 | ;; |
| 2327 | ;; Fontify all storage types, plus their items. |
| 2328 | `(eval . |
| 2329 | (list (concat "\\<\\(" (,@ c-type-names) "\\)\\>" |
| 2330 | "\\([ \t*&]+\\sw+\\>\\)*") |
| 2331 | ;; Fontify each declaration item. |
| 2332 | (list 'font-lock-match-c-style-declaration-item-and-skip-to-next |
| 2333 | ;; Start with point after all type specifiers. |
| 2334 | (list 'goto-char (list 'or |
| 2335 | (list 'match-beginning |
| 2336 | (+ (,@ c-type-names-depth) 2)) |
| 2337 | '(match-end 1))) |
| 2338 | ;; Finish with point after first type specifier. |
| 2339 | '(goto-char (match-end 1)) |
| 2340 | ;; Fontify as a variable or function name. |
| 2341 | '(1 (if (match-beginning 2) |
| 2342 | font-lock-function-name-face |
| 2343 | font-lock-variable-name-face))))) |
| 2344 | ;; |
| 2345 | ;; Fontify all storage specs and types, plus their items. |
| 2346 | `(eval . |
| 2347 | (list (concat "\\<\\(" (,@ c-type-specs) "\\)\\>" |
| 2348 | "[ \t]*\\(\\sw+\\)?") |
| 2349 | (list 1 'font-lock-keyword-face) |
| 2350 | (list (+ (,@ c-type-specs-depth) 2) 'font-lock-type-face nil t) |
| 2351 | (list 'font-lock-match-c-style-declaration-item-and-skip-to-next |
| 2352 | nil nil |
| 2353 | ;; Fontify as a variable or function name. |
| 2354 | '(1 (if (match-beginning 2) |
| 2355 | font-lock-function-name-face |
| 2356 | font-lock-variable-name-face) nil t)))) |
| 2357 | ;; |
| 2358 | ;; Fontify structures, or typedef names, plus their items. |
| 2359 | '("\\(}\\)[ \t*]*\\sw" |
| 2360 | (font-lock-match-c-style-declaration-item-and-skip-to-next |
| 2361 | (goto-char (match-end 1)) nil |
| 2362 | (1 font-lock-type-face))) |
| 2363 | ;; |
| 2364 | ;; Fontify anything at beginning of line as a declaration or definition. |
| 2365 | '("^\\(\\sw+\\)\\>\\([ \t*]+\\sw+\\>\\)*" |
| 2366 | (1 font-lock-type-face) |
| 2367 | (font-lock-match-c-style-declaration-item-and-skip-to-next |
| 2368 | (goto-char (or (match-beginning 2) (match-end 1))) nil |
| 2369 | (1 (if (match-beginning 2) |
| 2370 | font-lock-function-name-face |
| 2371 | font-lock-variable-name-face)))) |
| 2372 | ))) |
| 2373 | ) |
| 2374 | |
| 2375 | (defvar c-font-lock-keywords c-font-lock-keywords-1 |
| 2376 | "Default expressions to highlight in C mode. |
| 2377 | See also `c-font-lock-extra-types'.") |
| 2378 | \f |
| 2379 | ;;; C++. |
| 2380 | |
| 2381 | (defconst c++-font-lock-keywords-1 nil |
| 2382 | "Subdued level highlighting for C++ mode.") |
| 2383 | |
| 2384 | (defconst c++-font-lock-keywords-2 nil |
| 2385 | "Medium level highlighting for C++ mode. |
| 2386 | See also `c++-font-lock-extra-types'.") |
| 2387 | |
| 2388 | (defconst c++-font-lock-keywords-3 nil |
| 2389 | "Gaudy level highlighting for C++ mode. |
| 2390 | See also `c++-font-lock-extra-types'.") |
| 2391 | |
| 2392 | (defun font-lock-match-c++-style-declaration-item-and-skip-to-next (limit) |
| 2393 | ;; Regexp matches after point: word<word>::word ( |
| 2394 | ;; ^^^^ ^^^^ ^^^^ ^ |
| 2395 | ;; Where the match subexpressions are: 1 3 5 6 |
| 2396 | ;; |
| 2397 | ;; Item is delimited by (match-beginning 1) and (match-end 1). |
| 2398 | ;; If (match-beginning 3) is non-nil, that part of the item incloses a `<>'. |
| 2399 | ;; If (match-beginning 5) is non-nil, that part of the item follows a `::'. |
| 2400 | ;; If (match-beginning 6) is non-nil, the item is followed by a `('. |
| 2401 | (when (looking-at (eval-when-compile |
| 2402 | (concat |
| 2403 | ;; Skip any leading whitespace. |
| 2404 | "[ \t*&]*" |
| 2405 | ;; This is `c++-type-spec' from below. (Hint hint!) |
| 2406 | "\\(\\sw+\\)" ; The instance? |
| 2407 | "\\([ \t]*<\\([^>\n]+\\)[ \t*&]*>\\)?" ; Or template? |
| 2408 | "\\([ \t]*::[ \t*~]*\\(\\sw+\\)\\)*" ; Or member? |
| 2409 | ;; Match any trailing parenthesis. |
| 2410 | "[ \t]*\\((\\)?"))) |
| 2411 | (save-match-data |
| 2412 | (condition-case nil |
| 2413 | (save-restriction |
| 2414 | ;; Restrict to the end of line, currently guaranteed to be LIMIT. |
| 2415 | (narrow-to-region (point-min) limit) |
| 2416 | (goto-char (match-end 1)) |
| 2417 | ;; Move over any item value, etc., to the next item. |
| 2418 | (while (not (looking-at "[ \t]*\\(\\(,\\)\\|;\\|$\\)")) |
| 2419 | (goto-char (or (scan-sexps (point) 1) (point-max)))) |
| 2420 | (goto-char (match-end 2))) |
| 2421 | (error t))))) |
| 2422 | |
| 2423 | (let* ((c++-keywords |
| 2424 | (eval-when-compile |
| 2425 | (regexp-opt |
| 2426 | '("break" "continue" "do" "else" "for" "if" "return" "switch" |
| 2427 | "while" "asm" "catch" "delete" "new" "sizeof" "this" "throw" "try" |
| 2428 | ;; Branko Cibej <branko.cibej@hermes.si> says this is new. |
| 2429 | "export" |
| 2430 | ;; Mark Mitchell <mmitchell@usa.net> says these are new. |
| 2431 | "mutable" "explicit" |
| 2432 | ;; Alain Picard <ap@abelard.apana.org.au> suggests treating these |
| 2433 | ;; as keywords not types. |
| 2434 | "typedef" "template" |
| 2435 | "extern" "auto" "register" "const" "volatile" "static" |
| 2436 | "inline" "friend" "virtual") t))) |
| 2437 | (c++-operators |
| 2438 | (eval-when-compile |
| 2439 | (regexp-opt |
| 2440 | ;; Taken from Stroustrup, minus keywords otherwise fontified. |
| 2441 | '("+" "-" "*" "/" "%" "^" "&" "|" "~" "!" "=" "<" ">" "+=" "-=" |
| 2442 | "*=" "/=" "%=" "^=" "&=" "|=" "<<" ">>" ">>=" "<<=" "==" "!=" |
| 2443 | "<=" ">=" "&&" "||" "++" "--" "->*" "," "->" "[]" "()")))) |
| 2444 | (c++-type-specs |
| 2445 | (eval-when-compile |
| 2446 | (regexp-opt |
| 2447 | '("class" "public" "private" "protected" "typename" |
| 2448 | "struct" "union" "enum" "namespace" "using" |
| 2449 | ;; Eric Hopper <hopper@omnifarious.mn.org> says these are new. |
| 2450 | "static_cast" "dynamic_cast" "const_cast" "reinterpret_cast") t))) |
| 2451 | (c++-type-specs-depth |
| 2452 | (regexp-opt-depth c++-type-specs)) |
| 2453 | (c++-type-names |
| 2454 | `(mapconcat 'identity |
| 2455 | (cons |
| 2456 | (,@ (eval-when-compile |
| 2457 | (regexp-opt |
| 2458 | '("signed" "unsigned" "short" "long" |
| 2459 | "int" "char" "float" "double" "void" |
| 2460 | "bool" "complex")))) |
| 2461 | c++-font-lock-extra-types) |
| 2462 | "\\|")) |
| 2463 | (c++-type-names-depth `(regexp-opt-depth (,@ c++-type-names))) |
| 2464 | ;; |
| 2465 | ;; A brave attempt to match templates following a type and/or match |
| 2466 | ;; class membership. See and sync the above function |
| 2467 | ;; `font-lock-match-c++-style-declaration-item-and-skip-to-next'. |
| 2468 | (c++-type-suffix (concat "\\([ \t]*<\\([^>\n]+\\)[ \t*&]*>\\)?" |
| 2469 | "\\([ \t]*::[ \t*~]*\\(\\sw+\\)\\)*")) |
| 2470 | (c++-type-suffix-depth (regexp-opt-depth c++-type-suffix)) |
| 2471 | ;; If the string is a type, it may be followed by the cruft above. |
| 2472 | (c++-type-spec (concat "\\(\\sw+\\)\\>" c++-type-suffix)) |
| 2473 | (c++-type-spec-depth (regexp-opt-depth c++-type-spec)) |
| 2474 | ;; |
| 2475 | ;; Parenthesis depth of user-defined types not forgetting their cruft. |
| 2476 | (c++-type-depth `(regexp-opt-depth |
| 2477 | (concat (,@ c++-type-names) (,@ c++-type-suffix)))) |
| 2478 | ) |
| 2479 | (setq c++-font-lock-keywords-1 |
| 2480 | (append |
| 2481 | ;; |
| 2482 | ;; The list `c-font-lock-keywords-1' less that for function names. |
| 2483 | (cdr c-font-lock-keywords-1) |
| 2484 | (list |
| 2485 | ;; |
| 2486 | ;; Fontify function name definitions, possibly incorporating class names. |
| 2487 | (list (concat "^" c++-type-spec "[ \t]*(") |
| 2488 | '(1 (if (or (match-beginning 2) (match-beginning 4)) |
| 2489 | font-lock-type-face |
| 2490 | font-lock-function-name-face)) |
| 2491 | '(3 font-lock-type-face nil t) |
| 2492 | '(5 font-lock-function-name-face nil t)) |
| 2493 | ))) |
| 2494 | |
| 2495 | (setq c++-font-lock-keywords-2 |
| 2496 | (append c++-font-lock-keywords-1 |
| 2497 | (list |
| 2498 | ;; |
| 2499 | ;; The list `c-font-lock-keywords-2' for C++ plus operator overloading. |
| 2500 | `(eval . |
| 2501 | (cons (concat "\\<\\(" (,@ c++-type-names) "\\)\\>") |
| 2502 | 'font-lock-type-face)) |
| 2503 | ;; |
| 2504 | ;; Fontify operator overloading. |
| 2505 | (list (concat "\\<\\(operator\\)\\>[ \t]*\\(" c++-operators "\\)?") |
| 2506 | '(1 font-lock-keyword-face) |
| 2507 | '(2 font-lock-builtin-face nil t)) |
| 2508 | ;; |
| 2509 | ;; Fontify case/goto keywords and targets, and case default/goto tags. |
| 2510 | '("\\<\\(case\\|goto\\)\\>[ \t]*\\(-?\\sw+\\)?" |
| 2511 | (1 font-lock-keyword-face) (2 font-lock-constant-face nil t)) |
| 2512 | ;; This must come after the one for keywords and targets. |
| 2513 | '(":" ("^[ \t]*\\(\\sw+\\)[ \t]*:\\($\\|[^:]\\)" |
| 2514 | (beginning-of-line) (end-of-line) |
| 2515 | (1 font-lock-constant-face))) |
| 2516 | ;; |
| 2517 | ;; Fontify other builtin keywords. |
| 2518 | (concat "\\<\\(" c++-keywords "\\|" c++-type-specs "\\)\\>") |
| 2519 | ;; |
| 2520 | ;; Eric Hopper <hopper@omnifarious.mn.org> says `true' and `false' are new. |
| 2521 | '("\\<\\(false\\|true\\)\\>" . font-lock-constant-face) |
| 2522 | ))) |
| 2523 | |
| 2524 | (setq c++-font-lock-keywords-3 |
| 2525 | (append c++-font-lock-keywords-2 |
| 2526 | ;; |
| 2527 | ;; More complicated regexps for more complete highlighting for types. |
| 2528 | (list |
| 2529 | ;; |
| 2530 | ;; Fontify all storage classes and type specifiers, plus their items. |
| 2531 | `(eval . |
| 2532 | (list (concat "\\<\\(" (,@ c++-type-names) "\\)\\>" (,@ c++-type-suffix) |
| 2533 | "\\([ \t*&]+" (,@ c++-type-spec) "\\)*") |
| 2534 | ;; The name of any template type. |
| 2535 | (list (+ (,@ c++-type-names-depth) 3) 'font-lock-type-face nil t) |
| 2536 | ;; Fontify each declaration item. |
| 2537 | (list 'font-lock-match-c++-style-declaration-item-and-skip-to-next |
| 2538 | ;; Start with point after all type specifiers. |
| 2539 | (list 'goto-char (list 'or (list 'match-beginning |
| 2540 | (+ (,@ c++-type-depth) 2)) |
| 2541 | '(match-end 1))) |
| 2542 | ;; Finish with point after first type specifier. |
| 2543 | '(goto-char (match-end 1)) |
| 2544 | ;; Fontify as a variable or function name. |
| 2545 | '(1 (cond ((or (match-beginning 2) (match-beginning 4)) |
| 2546 | font-lock-type-face) |
| 2547 | ((and (match-beginning 6) (c-at-toplevel-p)) |
| 2548 | font-lock-function-name-face) |
| 2549 | (t |
| 2550 | font-lock-variable-name-face))) |
| 2551 | '(3 font-lock-type-face nil t) |
| 2552 | '(5 (if (match-beginning 6) |
| 2553 | font-lock-function-name-face |
| 2554 | font-lock-variable-name-face) nil t)))) |
| 2555 | ;; |
| 2556 | ;; Fontify all storage specs and types, plus their items. |
| 2557 | `(eval . |
| 2558 | (list (concat "\\<" (,@ c++-type-specs) "\\>" (,@ c++-type-suffix) |
| 2559 | "[ \t]*\\(" (,@ c++-type-spec) "\\)?") |
| 2560 | ;; The name of any template type. |
| 2561 | (list (+ (,@ c++-type-specs-depth) 2) 'font-lock-type-face nil t) |
| 2562 | ;; The name of any type. |
| 2563 | (list (+ (,@ c++-type-specs-depth) (,@ c++-type-suffix-depth) 2) |
| 2564 | 'font-lock-type-face nil t) |
| 2565 | ;; Fontify each declaration item. |
| 2566 | (list 'font-lock-match-c++-style-declaration-item-and-skip-to-next |
| 2567 | ;; Start with point after all type specifiers. |
| 2568 | nil |
| 2569 | ;; Finish with point after first type specifier. |
| 2570 | nil |
| 2571 | ;; Fontify as a variable or function name. |
| 2572 | '(1 (cond ((or (match-beginning 2) (match-beginning 4)) |
| 2573 | font-lock-type-face) |
| 2574 | ((and (match-beginning 6) (c-at-toplevel-p)) |
| 2575 | font-lock-function-name-face) |
| 2576 | (t |
| 2577 | font-lock-variable-name-face))) |
| 2578 | '(3 font-lock-type-face nil t) |
| 2579 | '(5 (if (match-beginning 6) |
| 2580 | font-lock-function-name-face |
| 2581 | font-lock-variable-name-face) nil t)) |
| 2582 | )) |
| 2583 | ;; |
| 2584 | ;; Fontify structures, or typedef names, plus their items. |
| 2585 | '("\\(}\\)[ \t*]*\\sw" |
| 2586 | (font-lock-match-c++-style-declaration-item-and-skip-to-next |
| 2587 | (goto-char (match-end 1)) nil |
| 2588 | (1 font-lock-type-face))) |
| 2589 | ;; |
| 2590 | ;; Fontify anything at beginning of line as a declaration or definition. |
| 2591 | (list (concat "^\\(" c++-type-spec "[ \t*&]*\\)+") |
| 2592 | '(font-lock-match-c++-style-declaration-item-and-skip-to-next |
| 2593 | (goto-char (match-beginning 1)) |
| 2594 | (goto-char (match-end 1)) |
| 2595 | (1 (cond ((or (match-beginning 2) (match-beginning 4)) |
| 2596 | font-lock-type-face) |
| 2597 | ((match-beginning 6) font-lock-function-name-face) |
| 2598 | (t font-lock-variable-name-face))) |
| 2599 | (3 font-lock-type-face nil t) |
| 2600 | (5 (if (match-beginning 6) |
| 2601 | font-lock-function-name-face |
| 2602 | font-lock-variable-name-face) nil t))) |
| 2603 | ))) |
| 2604 | ) |
| 2605 | |
| 2606 | (defvar c++-font-lock-keywords c++-font-lock-keywords-1 |
| 2607 | "Default expressions to highlight in C++ mode. |
| 2608 | See also `c++-font-lock-extra-types'.") |
| 2609 | \f |
| 2610 | ;;; Objective-C. |
| 2611 | |
| 2612 | (defconst objc-font-lock-keywords-1 nil |
| 2613 | "Subdued level highlighting for Objective-C mode.") |
| 2614 | |
| 2615 | (defconst objc-font-lock-keywords-2 nil |
| 2616 | "Medium level highlighting for Objective-C mode. |
| 2617 | See also `objc-font-lock-extra-types'.") |
| 2618 | |
| 2619 | (defconst objc-font-lock-keywords-3 nil |
| 2620 | "Gaudy level highlighting for Objective-C mode. |
| 2621 | See also `objc-font-lock-extra-types'.") |
| 2622 | |
| 2623 | ;; Regexps written with help from Stephen Peters <speters@us.oracle.com> and |
| 2624 | ;; Jacques Duthen Prestataire <duthen@cegelec-red.fr>. |
| 2625 | (let* ((objc-keywords |
| 2626 | (eval-when-compile |
| 2627 | (regexp-opt '("break" "continue" "do" "else" "for" "if" "return" |
| 2628 | "switch" "while" "sizeof" "self" "super" |
| 2629 | "typedef" "auto" "extern" "static" |
| 2630 | "volatile" "const") t))) |
| 2631 | (objc-type-specs |
| 2632 | (eval-when-compile |
| 2633 | (regexp-opt |
| 2634 | '("register" "struct" "union" "enum" |
| 2635 | "oneway" "in" "out" "inout" "bycopy" "byref") t))) |
| 2636 | (objc-type-specs-depth |
| 2637 | (regexp-opt-depth objc-type-specs)) |
| 2638 | (objc-type-names |
| 2639 | `(mapconcat 'identity |
| 2640 | (cons |
| 2641 | (,@ (eval-when-compile |
| 2642 | (regexp-opt |
| 2643 | '("signed" "unsigned" "short" "long" |
| 2644 | "int" "char" "float" "double" "void" |
| 2645 | "id")))) |
| 2646 | objc-font-lock-extra-types) |
| 2647 | "\\|")) |
| 2648 | (objc-type-names-depth |
| 2649 | `(regexp-opt-depth (,@ objc-type-names))) |
| 2650 | ) |
| 2651 | (setq objc-font-lock-keywords-1 |
| 2652 | (append |
| 2653 | ;; |
| 2654 | ;; The list `c-font-lock-keywords-1' less that for function names. |
| 2655 | (cdr c-font-lock-keywords-1) |
| 2656 | (list |
| 2657 | ;; |
| 2658 | ;; Fontify compiler directives. |
| 2659 | '("@\\(\\sw+\\)\\>" |
| 2660 | (1 font-lock-keyword-face) |
| 2661 | ("\\=[ \t:<,]*\\(\\sw+\\)" nil nil |
| 2662 | (1 font-lock-type-face))) |
| 2663 | ;; |
| 2664 | ;; Fontify method names and arguments. Oh Lordy! |
| 2665 | ;; First, on the same line as the function declaration. |
| 2666 | '("^[+-][ \t]*\\(PRIVATE\\>\\)?[ \t]*\\(([^)\n]+)\\)?[ \t]*\\(\\sw+\\)" |
| 2667 | (1 font-lock-keyword-face nil t) |
| 2668 | (3 font-lock-function-name-face) |
| 2669 | ("\\=[ \t]*\\(\\sw+\\)?:[ \t]*\\(([^)\n]+)\\)?[ \t]*\\(\\sw+\\)" |
| 2670 | nil nil |
| 2671 | (1 font-lock-function-name-face nil t) |
| 2672 | (3 font-lock-variable-name-face))) |
| 2673 | ;; Second, on lines following the function declaration. |
| 2674 | '(":" ("^[ \t]*\\(\\sw+\\)?:[ \t]*\\(([^)\n]+)\\)?[ \t]*\\(\\sw+\\)" |
| 2675 | (beginning-of-line) (end-of-line) |
| 2676 | (1 font-lock-function-name-face nil t) |
| 2677 | (3 font-lock-variable-name-face))) |
| 2678 | ))) |
| 2679 | |
| 2680 | (setq objc-font-lock-keywords-2 |
| 2681 | (append objc-font-lock-keywords-1 |
| 2682 | (list |
| 2683 | ;; |
| 2684 | ;; Simple regexps for speed. |
| 2685 | ;; |
| 2686 | ;; Fontify all type specifiers. |
| 2687 | `(eval . |
| 2688 | (cons (concat "\\<\\(" (,@ objc-type-names) "\\)\\>") |
| 2689 | 'font-lock-type-face)) |
| 2690 | ;; |
| 2691 | ;; Fontify all builtin keywords (except case, default and goto; see below). |
| 2692 | (concat "\\<\\(" objc-keywords "\\|" objc-type-specs "\\)\\>") |
| 2693 | ;; |
| 2694 | ;; Fontify case/goto keywords and targets, and case default/goto tags. |
| 2695 | '("\\<\\(case\\|goto\\)\\>[ \t]*\\(-?\\sw+\\)?" |
| 2696 | (1 font-lock-keyword-face) (2 font-lock-constant-face nil t)) |
| 2697 | ;; Fontify tags iff sole statement on line, otherwise we detect selectors. |
| 2698 | ;; This must come after the one for keywords and targets. |
| 2699 | '(":" ("^[ \t]*\\(\\sw+\\)[ \t]*:[ \t]*$" |
| 2700 | (beginning-of-line) (end-of-line) |
| 2701 | (1 font-lock-constant-face))) |
| 2702 | ;; |
| 2703 | ;; Fontify null object pointers. |
| 2704 | '("\\<[Nn]il\\>" . font-lock-constant-face) |
| 2705 | ))) |
| 2706 | |
| 2707 | (setq objc-font-lock-keywords-3 |
| 2708 | (append objc-font-lock-keywords-2 |
| 2709 | ;; |
| 2710 | ;; More complicated regexps for more complete highlighting for types. |
| 2711 | ;; We still have to fontify type specifiers individually, as C is so hairy. |
| 2712 | (list |
| 2713 | ;; |
| 2714 | ;; Fontify all storage classes and type specifiers, plus their items. |
| 2715 | `(eval . |
| 2716 | (list (concat "\\<\\(" (,@ objc-type-names) "\\)\\>" |
| 2717 | "\\([ \t*&]+\\sw+\\>\\)*") |
| 2718 | ;; Fontify each declaration item. |
| 2719 | (list 'font-lock-match-c-style-declaration-item-and-skip-to-next |
| 2720 | ;; Start with point after all type specifiers. |
| 2721 | (list 'goto-char |
| 2722 | (list 'or (list 'match-beginning |
| 2723 | (+ (,@ objc-type-names-depth) 2)) |
| 2724 | '(match-end 1))) |
| 2725 | ;; Finish with point after first type specifier. |
| 2726 | '(goto-char (match-end 1)) |
| 2727 | ;; Fontify as a variable or function name. |
| 2728 | '(1 (if (match-beginning 2) |
| 2729 | font-lock-function-name-face |
| 2730 | font-lock-variable-name-face))))) |
| 2731 | ;; |
| 2732 | ;; Fontify all storage specs and types, plus their items. |
| 2733 | `(eval . |
| 2734 | (list (concat "\\<\\(" (,@ objc-type-specs) "[ \t]*\\)+\\>" |
| 2735 | "[ \t]*\\(\\sw+\\)?") |
| 2736 | ;; The name of any type. |
| 2737 | (list (+ (,@ objc-type-specs-depth) 2) 'font-lock-type-face nil t) |
| 2738 | ;; Fontify each declaration item. |
| 2739 | (list 'font-lock-match-c++-style-declaration-item-and-skip-to-next |
| 2740 | nil nil |
| 2741 | ;; Fontify as a variable or function name. |
| 2742 | '(1 (if (match-beginning 2) |
| 2743 | font-lock-function-name-face |
| 2744 | font-lock-variable-name-face))) |
| 2745 | )) |
| 2746 | ;; |
| 2747 | ;; Fontify structures, or typedef names, plus their items. |
| 2748 | '("\\(}\\)[ \t*]*\\sw" |
| 2749 | (font-lock-match-c-style-declaration-item-and-skip-to-next |
| 2750 | (goto-char (match-end 1)) nil |
| 2751 | (1 font-lock-type-face))) |
| 2752 | ;; |
| 2753 | ;; Fontify anything at beginning of line as a declaration or definition. |
| 2754 | '("^\\(\\sw+\\)\\>\\([ \t*]+\\sw+\\>\\)*" |
| 2755 | (1 font-lock-type-face) |
| 2756 | (font-lock-match-c-style-declaration-item-and-skip-to-next |
| 2757 | (goto-char (or (match-beginning 2) (match-end 1))) nil |
| 2758 | (1 (if (match-beginning 2) |
| 2759 | font-lock-function-name-face |
| 2760 | font-lock-variable-name-face)))) |
| 2761 | ))) |
| 2762 | ) |
| 2763 | |
| 2764 | (defvar objc-font-lock-keywords objc-font-lock-keywords-1 |
| 2765 | "Default expressions to highlight in Objective-C mode. |
| 2766 | See also `objc-font-lock-extra-types'.") |
| 2767 | \f |
| 2768 | ;;; Java. |
| 2769 | |
| 2770 | (defconst java-font-lock-keywords-1 nil |
| 2771 | "Subdued level highlighting for Java mode.") |
| 2772 | |
| 2773 | (defconst java-font-lock-keywords-2 nil |
| 2774 | "Medium level highlighting for Java mode. |
| 2775 | See also `java-font-lock-extra-types'.") |
| 2776 | |
| 2777 | (defconst java-font-lock-keywords-3 nil |
| 2778 | "Gaudy level highlighting for Java mode. |
| 2779 | See also `java-font-lock-extra-types'.") |
| 2780 | |
| 2781 | ;; Regexps written with help from Fred White <fwhite@bbn.com>, |
| 2782 | ;; Anders Lindgren <andersl@andersl.com> and Carl Manning <caroma@ai.mit.edu>. |
| 2783 | (let* ((java-keywords |
| 2784 | (eval-when-compile |
| 2785 | (regexp-opt |
| 2786 | '("catch" "do" "else" "super" "this" "finally" "for" "if" |
| 2787 | ;; Anders Lindgren <andersl@andersl.com> says these have gone. |
| 2788 | ;; "cast" "byvalue" "future" "generic" "operator" "var" |
| 2789 | ;; "inner" "outer" "rest" |
| 2790 | "implements" "extends" "throws" "instanceof" "new" |
| 2791 | "interface" "return" "switch" "throw" "try" "while") t))) |
| 2792 | ;; |
| 2793 | ;; Classes immediately followed by an object name. |
| 2794 | (java-type-names |
| 2795 | `(mapconcat 'identity |
| 2796 | (cons |
| 2797 | (,@ (eval-when-compile |
| 2798 | (regexp-opt '("boolean" "char" "byte" "short" "int" "long" |
| 2799 | "float" "double" "void")))) |
| 2800 | java-font-lock-extra-types) |
| 2801 | "\\|")) |
| 2802 | (java-type-names-depth `(regexp-opt-depth (,@ java-type-names))) |
| 2803 | ;; |
| 2804 | ;; These are eventually followed by an object name. |
| 2805 | (java-type-specs |
| 2806 | (eval-when-compile |
| 2807 | (regexp-opt |
| 2808 | '("abstract" "const" "final" "synchronized" "transient" "static" |
| 2809 | ;; Anders Lindgren <andersl@andersl.com> says this has gone. |
| 2810 | ;; "threadsafe" |
| 2811 | "volatile" "public" "private" "protected" "native" |
| 2812 | ;; Carl Manning <caroma@ai.mit.edu> says this is new. |
| 2813 | "strictfp")))) |
| 2814 | ) |
| 2815 | (setq java-font-lock-keywords-1 |
| 2816 | (list |
| 2817 | ;; |
| 2818 | ;; Fontify class names. |
| 2819 | '("\\<\\(class\\)\\>[ \t]*\\(\\sw+\\)?" |
| 2820 | (1 font-lock-keyword-face) (2 font-lock-type-face nil t)) |
| 2821 | ;; |
| 2822 | ;; Fontify package names in import directives. |
| 2823 | '("\\<\\(import\\|package\\)\\>[ \t]*\\(\\sw+\\)?" |
| 2824 | (1 font-lock-keyword-face) |
| 2825 | (2 font-lock-constant-face nil t) |
| 2826 | ("\\=\\.\\(\\*\\|\\sw+\\)" nil nil |
| 2827 | (1 font-lock-constant-face nil t))) |
| 2828 | )) |
| 2829 | |
| 2830 | (setq java-font-lock-keywords-2 |
| 2831 | (append java-font-lock-keywords-1 |
| 2832 | (list |
| 2833 | ;; |
| 2834 | ;; Fontify class names. |
| 2835 | `(eval . |
| 2836 | (cons (concat "\\<\\(" (,@ java-type-names) "\\)\\>[^.]") |
| 2837 | '(1 font-lock-type-face))) |
| 2838 | ;; |
| 2839 | ;; Fontify all builtin keywords (except below). |
| 2840 | (concat "\\<\\(" java-keywords "\\|" java-type-specs "\\)\\>") |
| 2841 | ;; |
| 2842 | ;; Fontify keywords and targets, and case default/goto tags. |
| 2843 | (list "\\<\\(break\\|case\\|continue\\|goto\\)\\>[ \t]*\\(-?\\sw+\\)?" |
| 2844 | '(1 font-lock-keyword-face) '(2 font-lock-constant-face nil t)) |
| 2845 | ;; This must come after the one for keywords and targets. |
| 2846 | '(":" ("^[ \t]*\\(\\sw+\\)[ \t]*:[ \t]*$" |
| 2847 | (beginning-of-line) (end-of-line) |
| 2848 | (1 font-lock-constant-face))) |
| 2849 | ;; |
| 2850 | ;; Fontify all constants. |
| 2851 | '("\\<\\(false\\|null\\|true\\)\\>" . font-lock-constant-face) |
| 2852 | ;; |
| 2853 | ;; Javadoc tags within comments. |
| 2854 | '("@\\(author\\|exception\\|return\\|see\\|version\\)\\>" |
| 2855 | (1 font-lock-constant-face prepend)) |
| 2856 | '("@\\(param\\)\\>[ \t]*\\(\\sw+\\)?" |
| 2857 | (1 font-lock-constant-face prepend) |
| 2858 | (2 font-lock-variable-name-face prepend t)) |
| 2859 | ))) |
| 2860 | |
| 2861 | (setq java-font-lock-keywords-3 |
| 2862 | (append java-font-lock-keywords-2 |
| 2863 | ;; |
| 2864 | ;; More complicated regexps for more complete highlighting for types. |
| 2865 | ;; We still have to fontify type specifiers individually, as Java is hairy. |
| 2866 | (list |
| 2867 | ;; |
| 2868 | ;; Fontify random types immediately followed by an item or items. |
| 2869 | `(eval . |
| 2870 | (list (concat "\\<\\(" (,@ java-type-names) "\\)\\>" |
| 2871 | "\\([ \t]*\\[[ \t]*\\]\\)*" |
| 2872 | "\\([ \t]*\\sw\\)") |
| 2873 | ;; Fontify each declaration item. |
| 2874 | (list 'font-lock-match-c-style-declaration-item-and-skip-to-next |
| 2875 | ;; Start and finish with point after the type specifier. |
| 2876 | (list 'goto-char (list 'match-beginning |
| 2877 | (+ (,@ java-type-names-depth) 3))) |
| 2878 | (list 'goto-char (list 'match-beginning |
| 2879 | (+ (,@ java-type-names-depth) 3))) |
| 2880 | ;; Fontify as a variable or function name. |
| 2881 | '(1 (if (match-beginning 2) |
| 2882 | font-lock-function-name-face |
| 2883 | font-lock-variable-name-face))))) |
| 2884 | ;; |
| 2885 | ;; Fontify those that are eventually followed by an item or items. |
| 2886 | (list (concat "\\<\\(" java-type-specs "\\)\\>" |
| 2887 | "\\([ \t]+\\sw+\\>" |
| 2888 | "\\([ \t]*\\[[ \t]*\\]\\)*" |
| 2889 | "\\)*") |
| 2890 | ;; Fontify each declaration item. |
| 2891 | '(font-lock-match-c-style-declaration-item-and-skip-to-next |
| 2892 | ;; Start with point after all type specifiers. |
| 2893 | (goto-char (or (match-beginning 5) (match-end 1))) |
| 2894 | ;; Finish with point after first type specifier. |
| 2895 | (goto-char (match-end 1)) |
| 2896 | ;; Fontify as a variable or function name. |
| 2897 | (1 (if (match-beginning 2) |
| 2898 | font-lock-function-name-face |
| 2899 | font-lock-variable-name-face)))) |
| 2900 | ))) |
| 2901 | ) |
| 2902 | |
| 2903 | (defvar java-font-lock-keywords java-font-lock-keywords-1 |
| 2904 | "Default expressions to highlight in Java mode. |
| 2905 | See also `java-font-lock-extra-types'.") |
| 2906 | \f |
| 2907 | ;; Install ourselves: |
| 2908 | |
| 2909 | (unless (assq 'font-lock-mode minor-mode-alist) |
| 2910 | (push '(font-lock-mode nil) minor-mode-alist)) |
| 2911 | |
| 2912 | ;; Provide ourselves: |
| 2913 | |
| 2914 | (provide 'font-lock) |
| 2915 | |
| 2916 | ;;; font-lock.el ends here |