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- ;;; font-lock.el --- Electric font lock mode
-
- ;; Copyright (C) 1992, 1993, 1994, 1995, 1996 Free Software Foundation, Inc.
-
- ;; Author: jwz, then rms, then sm <simon@gnu.ai.mit.edu>
- ;; Maintainer: FSF
- ;; Keywords: languages, faces
-
- ;; This file is part of GNU Emacs.
-
- ;; GNU Emacs is free software; you can redistribute it and/or modify
- ;; it under the terms of the GNU General Public License as published by
- ;; the Free Software Foundation; either version 2, or (at your option)
- ;; any later version.
-
- ;; GNU Emacs is distributed in the hope that it will be useful,
- ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
- ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- ;; GNU General Public License for more details.
-
- ;; You should have received a copy of the GNU General Public License
- ;; along with GNU Emacs; see the file COPYING. If not, write to the
- ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- ;; Boston, MA 02111-1307, USA.
-
- ;;; Commentary:
-
- ;; Font Lock mode is a minor mode that causes your comments to be displayed in
- ;; one face, strings in another, reserved words in another, and so on.
- ;;
- ;; Comments will be displayed in `font-lock-comment-face'.
- ;; Strings will be displayed in `font-lock-string-face'.
- ;; Regexps are used to display selected patterns in other faces.
- ;;
- ;; To make the text you type be fontified, use M-x font-lock-mode RET.
- ;; When this minor mode is on, the faces of the current line are updated with
- ;; every insertion or deletion.
- ;;
- ;; To turn Font Lock mode on automatically, add this to your ~/.emacs file:
- ;;
- ;; (add-hook 'emacs-lisp-mode-hook 'turn-on-font-lock)
- ;;
- ;; Or if you want to turn Font Lock mode on in many modes:
- ;;
- ;; (global-font-lock-mode t)
- ;;
- ;; Fontification for a particular mode may be available in a number of levels
- ;; of decoration. The higher the level, the more decoration, but the more time
- ;; it takes to fontify. See the variable `font-lock-maximum-decoration', and
- ;; also the variable `font-lock-maximum-size'. Support modes for Font Lock
- ;; mode can be used to speed up Font Lock mode. See `font-lock-support-mode'.
-
- ;; Constructing patterns:
- ;;
- ;; See the documentation for the variable `font-lock-keywords'.
- ;;
- ;; Nasty regexps of the form "bar\\(\\|lo\\)\\|f\\(oo\\|u\\(\\|bar\\)\\)\\|lo"
- ;; are made thusly: (make-regexp '("foo" "fu" "fubar" "bar" "barlo" "lo")) for
- ;; efficiency. See /pub/gnu/emacs/elisp-archive/functions/make-regexp.el.Z on
- ;; archive.cis.ohio-state.edu for this and other functions.
-
- ;; Adding patterns for modes that already support Font Lock:
- ;;
- ;; Font Lock mode uses the buffer local variable `font-lock-keywords' for the
- ;; highlighting patterns. This variable is set by Font Lock mode from (a) the
- ;; buffer local variable `font-lock-defaults', if non-nil, or (b) the global
- ;; variable `font-lock-defaults-alist', if the major mode has an entry.
- ;; Font Lock mode is set up via (a) where a mode's patterns are distributed
- ;; with the mode's package library, (b) where a mode's patterns are distributed
- ;; with font-lock.el itself. An example of (a) is Pascal mode, an example of
- ;; (b) is C/C++ modes. (Normally, the mechanism is (a); (b) is used where it
- ;; is not clear which package library should contain the pattern definitions.)
- ;;
- ;; If, for a particular mode, mechanism (a) is used, you need to add your
- ;; patterns after that package library has loaded, e.g.:
- ;;
- ;; (eval-after-load "pascal" '(add-to-list 'pascal-font-lock-keywords ...))
- ;;
- ;; (Note that only one pattern can be added with `add-to-list'. For multiple
- ;; patterns, use one `eval-after-load' form with one `setq' and `append' form,
- ;; or multiple `eval-after-load' forms each with one `add-to-list' form.)
- ;; If mechanism (b) is used, you need to add your patterns after font-lock.el
- ;; itself has loaded, e.g.:
- ;;
- ;; (eval-after-load "font-lock" '(add-to-list 'c-font-lock-keywords ...))
- ;;
- ;; Which variable you should add to depends on what level of fontification you
- ;; choose and what level is supported. If you choose the maximum level, by
- ;; setting the variable `font-lock-maximum-decoration', you change a different
- ;; variable. Maximum level patterns for C are `c-font-lock-keywords-3', so:
- ;;
- ;; (setq font-lock-maximum-decoration t)
- ;; (eval-after-load "font-lock"
- ;; '(add-to-list 'c-font-lock-keywords-3
- ;; '("\\<FILE\\>" . font-lock-type-face)))
- ;;
- ;; To see which variable to set, see the buffer's value of `font-lock-defaults'
- ;; or the mode's entry in the global value of `font-lock-defaults-alist'.
-
- ;; Adding patterns for modes that do not support Font Lock:
- ;;
- ;; If you add patterns for a new mode, say foo.el's `foo-mode', say in which
- ;; you don't want syntactic fontification to occur, you can make Font Lock mode
- ;; use your regexps when turning on Font Lock by adding to `foo-mode-hook':
- ;;
- ;; (add-hook 'foo-mode-hook
- ;; '(lambda () (make-local-variable 'font-lock-defaults)
- ;; (setq font-lock-defaults '(foo-font-lock-keywords t))))
-
- ;; What is fontification for? You might say, "It's to make my code look nice."
- ;; I think it should be for adding information in the form of cues. These cues
- ;; should provide you with enough information to both (a) distinguish between
- ;; different items, and (b) identify the item meanings, without having to read
- ;; the items and think about it. Therefore, fontification allows you to think
- ;; less about, say, the structure of code, and more about, say, why the code
- ;; doesn't work. Or maybe it allows you to think less and drift off to sleep.
- ;;
- ;; So, here are my opinions/advice/guidelines:
- ;;
- ;; - Highlight conceptual objects, such as function and variable names, and
- ;; different objects types differently, i.e., (a) and (b) above, highlight
- ;; function names differently to variable names.
- ;; - Keep the faces distinct from each other as far as possible.
- ;; i.e., (a) above.
- ;; - Use the same face for the same conceptual object, across all modes.
- ;; i.e., (b) above, all modes that have items that can be thought of as, say,
- ;; keywords, should be highlighted with the same face, etc.
- ;; - Make the face attributes fit the concept as far as possible.
- ;; i.e., function names might be a bold colour such as blue, comments might
- ;; be a bright colour such as red, character strings might be brown, because,
- ;; err, strings are brown (that was not the reason, please believe me).
- ;; - Don't use a non-nil OVERRIDE unless you have a good reason.
- ;; Only use OVERRIDE for special things that are easy to define, such as the
- ;; way `...' quotes are treated in strings and comments in Emacs Lisp mode.
- ;; Don't use it to, say, highlight keywords in commented out code or strings.
- ;; - Err, that's it.
-
- ;; User variables.
-
- (defvar font-lock-verbose (* 0 1024)
- "*If non-nil, means show status messages for buffer fontification.
- If a number, only buffers greater than this size have fontification messages.")
-
- ;;;###autoload
- (defvar font-lock-maximum-decoration nil
- "*Maximum decoration level for fontification.
- If nil, use the default decoration (typically the minimum available).
- If t, use the maximum decoration available.
- If a number, use that level of decoration (or if not available the maximum).
- If a list, each element should be a cons pair of the form (MAJOR-MODE . LEVEL),
- where MAJOR-MODE is a symbol or t (meaning the default). For example:
- ((c-mode . t) (c++-mode . 2) (t . 1))
- means use the maximum decoration available for buffers in C mode, level 2
- decoration for buffers in C++ mode, and level 1 decoration otherwise.")
-
- ;;;###autoload
- (defvar font-lock-maximum-size (* 250 1024)
- "*Maximum size of a buffer for buffer fontification.
- Only buffers less than this can be fontified when Font Lock mode is turned on.
- If nil, means size is irrelevant.
- If a list, each element should be a cons pair of the form (MAJOR-MODE . SIZE),
- where MAJOR-MODE is a symbol or t (meaning the default). For example:
- ((c-mode . 256000) (c++-mode . 256000) (rmail-mode . 1048576))
- means that the maximum size is 250K for buffers in C or C++ modes, one megabyte
- for buffers in Rmail mode, and size is irrelevant otherwise.")
-
- ;; Fontification variables:
-
- (defvar font-lock-comment-face 'font-lock-comment-face
- "Face to use for comments.")
-
- (defvar font-lock-string-face 'font-lock-string-face
- "Face to use for strings.")
-
- (defvar font-lock-keyword-face 'font-lock-keyword-face
- "Face to use for keywords.")
-
- (defvar font-lock-function-name-face 'font-lock-function-name-face
- "Face to use for function names.")
-
- (defvar font-lock-variable-name-face 'font-lock-variable-name-face
- "Face to use for variable names.")
-
- (defvar font-lock-type-face 'font-lock-type-face
- "Face to use for type names.")
-
- (defvar font-lock-reference-face 'font-lock-reference-face
- "Face to use for reference names.")
-
- (defvar font-lock-keywords nil
- "*A list of the keywords to highlight.
- Each element should be of the form:
-
- MATCHER
- (MATCHER . MATCH)
- (MATCHER . FACENAME)
- (MATCHER . HIGHLIGHT)
- (MATCHER HIGHLIGHT ...)
- (eval . FORM)
-
- where HIGHLIGHT should be either MATCH-HIGHLIGHT or MATCH-ANCHORED.
-
- FORM is an expression, whose value should be a keyword element, evaluated when
- the keyword is (first) used in a buffer. This feature can be used to provide a
- keyword that can only be generated when Font Lock mode is actually turned on.
-
- For highlighting single items, typically only MATCH-HIGHLIGHT is required.
- However, if an item or (typically) items are to be highlighted following the
- instance of another item (the anchor) then MATCH-ANCHORED may be required.
-
- MATCH-HIGHLIGHT should be of the form:
-
- (MATCH FACENAME OVERRIDE LAXMATCH)
-
- Where MATCHER can be either the regexp to search for, or the function name to
- call to make the search (called with one argument, the limit of the search).
- MATCH is the subexpression of MATCHER to be highlighted. FACENAME is an
- expression whose value is the face name to use. FACENAME's default attributes
- may be defined in `font-lock-face-attributes'.
-
- OVERRIDE and LAXMATCH are flags. If OVERRIDE is t, existing fontification may
- be overwritten. If `keep', only parts not already fontified are highlighted.
- If `prepend' or `append', existing fontification is merged with the new, in
- which the new or existing fontification, respectively, takes precedence.
- If LAXMATCH is non-nil, no error is signaled if there is no MATCH in MATCHER.
-
- For example, an element of the form highlights (if not already highlighted):
-
- \"\\\\\\=<foo\\\\\\=>\" Discrete occurrences of \"foo\" in the value of the
- variable `font-lock-keyword-face'.
- (\"fu\\\\(bar\\\\)\" . 1) Substring \"bar\" within all occurrences of \"fubar\" in
- the value of `font-lock-keyword-face'.
- (\"fubar\" . fubar-face) Occurrences of \"fubar\" in the value of `fubar-face'.
- (\"foo\\\\|bar\" 0 foo-bar-face t)
- Occurrences of either \"foo\" or \"bar\" in the value
- of `foo-bar-face', even if already highlighted.
-
- MATCH-ANCHORED should be of the form:
-
- (MATCHER PRE-MATCH-FORM POST-MATCH-FORM MATCH-HIGHLIGHT ...)
-
- Where MATCHER is as for MATCH-HIGHLIGHT with one exception. The limit of the
- search is currently guaranteed to be (no greater than) the end of the line.
- PRE-MATCH-FORM and POST-MATCH-FORM are evaluated before the first, and after
- the last, instance MATCH-ANCHORED's MATCHER is used. Therefore they can be
- used to initialise before, and cleanup after, MATCHER is used. Typically,
- PRE-MATCH-FORM is used to move to some position relative to the original
- MATCHER, before starting with MATCH-ANCHORED's MATCHER. POST-MATCH-FORM might
- be used to move, before resuming with MATCH-ANCHORED's parent's MATCHER.
-
- For example, an element of the form highlights (if not already highlighted):
-
- (\"\\\\\\=<anchor\\\\\\=>\" (0 anchor-face) (\"\\\\\\=<item\\\\\\=>\" nil nil (0 item-face)))
-
- Discrete occurrences of \"anchor\" in the value of `anchor-face', and subsequent
- discrete occurrences of \"item\" (on the same line) in the value of `item-face'.
- (Here PRE-MATCH-FORM and POST-MATCH-FORM are nil. Therefore \"item\" is
- initially searched for starting from the end of the match of \"anchor\", and
- searching for subsequent instance of \"anchor\" resumes from where searching
- for \"item\" concluded.)
-
- Note that the MATCH-ANCHORED feature is experimental; in the future, we may
- replace it with other ways of providing this functionality.
-
- These regular expressions should not match text which spans lines. While
- \\[font-lock-fontify-buffer] handles multi-line patterns correctly, updating
- when you edit the buffer does not, since it considers text one line at a time.
-
- Be very careful composing regexps for this list;
- the wrong pattern can dramatically slow things down!")
- (make-variable-buffer-local 'font-lock-keywords)
-
- (defvar font-lock-defaults nil
- "If set by a major mode, should be the defaults for Font Lock mode.
- The value should be like the `cdr' of an item in `font-lock-defaults-alist'.")
-
- (defvar font-lock-defaults-alist
- (let (;; For C and Lisp modes we use `beginning-of-defun', rather than nil,
- ;; for SYNTAX-BEGIN. Thus the calculation of the cache is usually
- ;; faster but not infallible, so we risk mis-fontification. --sm.
- (c-mode-defaults
- '((c-font-lock-keywords c-font-lock-keywords-1
- c-font-lock-keywords-2 c-font-lock-keywords-3)
- nil nil ((?_ . "w")) beginning-of-defun
- (font-lock-comment-start-regexp . "/[*/]")
- (font-lock-mark-block-function . mark-defun)))
- (c++-mode-defaults
- '((c++-font-lock-keywords c++-font-lock-keywords-1
- c++-font-lock-keywords-2 c++-font-lock-keywords-3)
- nil nil ((?_ . "w") (?~ . "w")) beginning-of-defun
- (font-lock-comment-start-regexp . "/[*/]")
- (font-lock-mark-block-function . mark-defun)))
- (lisp-mode-defaults
- '((lisp-font-lock-keywords
- lisp-font-lock-keywords-1 lisp-font-lock-keywords-2)
- nil nil (("+-*/.<>=!?$%_&~^:" . "w")) beginning-of-defun
- (font-lock-comment-start-regexp . ";")
- (font-lock-mark-block-function . mark-defun)))
- (scheme-mode-defaults
- '(scheme-font-lock-keywords
- nil t (("+-*/.<>=!?$%_&~^:" . "w")) beginning-of-defun
- (font-lock-comment-start-regexp . ";")
- (font-lock-mark-block-function . mark-defun)))
- ;; For TeX modes we could use `backward-paragraph' for the same reason.
- ;; But we don't, because paragraph breaks are arguably likely enough to
- ;; occur within a genuine syntactic block to make it too risky.
- ;; However, we do specify a MARK-BLOCK function as that cannot result
- ;; in a mis-fontification even if it might not fontify enough. --sm.
- (tex-mode-defaults
- '(tex-font-lock-keywords nil nil ((?$ . "\"")) nil
- (font-lock-comment-start-regexp . "%")
- (font-lock-mark-block-function . mark-paragraph)))
- )
- (list
- (cons 'c++-c-mode c-mode-defaults)
- (cons 'c++-mode c++-mode-defaults)
- (cons 'c-mode c-mode-defaults)
- (cons 'elec-c-mode c-mode-defaults)
- (cons 'emacs-lisp-mode lisp-mode-defaults)
- (cons 'inferior-scheme-mode scheme-mode-defaults)
- (cons 'latex-mode tex-mode-defaults)
- (cons 'lisp-mode lisp-mode-defaults)
- (cons 'lisp-interaction-mode lisp-mode-defaults)
- (cons 'plain-tex-mode tex-mode-defaults)
- (cons 'scheme-mode scheme-mode-defaults)
- (cons 'scheme-interaction-mode scheme-mode-defaults)
- (cons 'slitex-mode tex-mode-defaults)
- (cons 'tex-mode tex-mode-defaults)))
- "Alist of default major mode and Font Lock defaults.
- Each item should be a list of the form:
-
- (MAJOR-MODE . (KEYWORDS KEYWORDS-ONLY CASE-FOLD SYNTAX-ALIST SYNTAX-BEGIN
- ...))
-
- where MAJOR-MODE is a symbol. KEYWORDS may be a symbol (a variable or function
- whose value is the keywords to use for fontification) or a list of symbols.
- If KEYWORDS-ONLY is non-nil, syntactic fontification (strings and comments) is
- not performed. If CASE-FOLD is non-nil, the case of the keywords is ignored
- when fontifying. If SYNTAX-ALIST is non-nil, it should be a list of cons pairs
- of the form (CHAR-OR-STRING . STRING) used to set the local Font Lock syntax
- table, for keyword and syntactic fontification (see `modify-syntax-entry').
-
- If SYNTAX-BEGIN is non-nil, it should be a function with no args used to move
- backwards outside any enclosing syntactic block, for syntactic fontification.
- Typical values are `beginning-of-line' (i.e., the start of the line is known to
- be outside a syntactic block), or `beginning-of-defun' for programming modes or
- `backward-paragraph' for textual modes (i.e., the mode-dependent function is
- known to move outside a syntactic block). If nil, the beginning of the buffer
- is used as a position outside of a syntactic block, in the worst case.
-
- These item elements are used by Font Lock mode to set the variables
- `font-lock-keywords', `font-lock-keywords-only',
- `font-lock-keywords-case-fold-search', `font-lock-syntax-table' and
- `font-lock-beginning-of-syntax-function', respectively.
-
- Further item elements are alists of the form (VARIABLE . VALUE) and are in no
- particular order. Each VARIABLE is made buffer-local before set to VALUE.
-
- Currently, appropriate variables include `font-lock-mark-block-function'.
- If this is non-nil, it should be a function with no args used to mark any
- enclosing block of text, for fontification via \\[font-lock-fontify-block].
- Typical values are `mark-defun' for programming modes or `mark-paragraph' for
- textual modes (i.e., the mode-dependent function is known to put point and mark
- around a text block relevant to that mode).
-
- Other variables include those for buffer-specialised fontification functions,
- `font-lock-fontify-buffer-function', `font-lock-unfontify-buffer-function',
- `font-lock-fontify-region-function', `font-lock-unfontify-region-function',
- `font-lock-comment-start-regexp', `font-lock-inhibit-thing-lock' and
- `font-lock-maximum-size'.")
-
- (defvar font-lock-keywords-only nil
- "*Non-nil means Font Lock should not fontify comments or strings.
- This is normally set via `font-lock-defaults'.")
-
- (defvar font-lock-keywords-case-fold-search nil
- "*Non-nil means the patterns in `font-lock-keywords' are case-insensitive.
- This is normally set via `font-lock-defaults'.")
-
- (defvar font-lock-syntax-table nil
- "Non-nil means use this syntax table for fontifying.
- If this is nil, the major mode's syntax table is used.
- This is normally set via `font-lock-defaults'.")
-
- ;; If this is nil, we only use the beginning of the buffer if we can't use
- ;; `font-lock-cache-position' and `font-lock-cache-state'.
- (defvar font-lock-beginning-of-syntax-function nil
- "*Non-nil means use this function to move back outside of a syntactic block.
- When called with no args it should leave point at the beginning of any
- enclosing syntactic block.
- If this is nil, the beginning of the buffer is used (in the worst case).
- This is normally set via `font-lock-defaults'.")
-
- (defvar font-lock-mark-block-function nil
- "*Non-nil means use this function to mark a block of text.
- When called with no args it should leave point at the beginning of any
- enclosing textual block and mark at the end.
- This is normally set via `font-lock-defaults'.")
-
- (defvar font-lock-comment-start-regexp nil
- "*Regexp to match the start of a comment.
- This need not discriminate between genuine comments and quoted comment
- characters or comment characters within strings.
- If nil, `comment-start-skip' is used instead; see that variable for more info.
- This is normally set via `font-lock-defaults'.")
-
- (defvar font-lock-fontify-buffer-function 'font-lock-default-fontify-buffer
- "Function to use for fontifying the buffer.
- This is normally set via `font-lock-defaults'.")
-
- (defvar font-lock-unfontify-buffer-function 'font-lock-default-unfontify-buffer
- "Function to use for unfontifying the buffer.
- This is used when turning off Font Lock mode.
- This is normally set via `font-lock-defaults'.")
-
- (defvar font-lock-fontify-region-function 'font-lock-default-fontify-region
- "Function to use for fontifying a region.
- It should take two args, the beginning and end of the region, and an optional
- third arg VERBOSE. If non-nil, the function should print status messages.
- This is normally set via `font-lock-defaults'.")
-
- (defvar font-lock-unfontify-region-function 'font-lock-default-unfontify-region
- "Function to use for unfontifying a region.
- It should take two args, the beginning and end of the region.
- This is normally set via `font-lock-defaults'.")
-
- (defvar font-lock-inhibit-thing-lock nil
- "List of Font Lock mode related modes that should not be turned on.
- Currently, valid mode names as `fast-lock-mode' and `lazy-lock-mode'.
- This is normally set via `font-lock-defaults'.")
-
- (defvar font-lock-mode nil) ; For the modeline.
- (defvar font-lock-fontified nil) ; Whether we have fontified the buffer.
-
- ;;;###autoload
- (defvar font-lock-mode-hook nil
- "Function or functions to run on entry to Font Lock mode.")
-
- ;; Font Lock mode.
-
- (eval-when-compile
- ;; We don't do this at the top-level as we only use non-autoloaded macros.
- (require 'cl))
-
- ;;;###autoload
- (defun font-lock-mode (&optional arg)
- "Toggle Font Lock mode.
- With arg, turn Font Lock mode on if and only if arg is positive.
-
- When Font Lock mode is enabled, text is fontified as you type it:
-
- - Comments are displayed in `font-lock-comment-face';
- - Strings are displayed in `font-lock-string-face';
- - Certain other expressions are displayed in other faces according to the
- value of the variable `font-lock-keywords'.
-
- You can enable Font Lock mode in any major mode automatically by turning on in
- the major mode's hook. For example, put in your ~/.emacs:
-
- (add-hook 'c-mode-hook 'turn-on-font-lock)
-
- Alternatively, you can use Global Font Lock mode to automagically turn on Font
- Lock mode in buffers whose major mode supports it and whose major mode is one
- of `font-lock-global-modes'. For example, put in your ~/.emacs:
-
- (global-font-lock-mode t)
-
- There are a number of support modes that may be used to speed up Font Lock mode
- in various ways, specified via the variable `font-lock-support-mode'. Where
- major modes support different levels of fontification, you can use the variable
- `font-lock-maximum-decoration' to specify which level you generally prefer.
- When you turn Font Lock mode on/off the buffer is fontified/defontified, though
- fontification occurs only if the buffer is less than `font-lock-maximum-size'.
-
- For example, to specify that Font Lock mode use use Lazy Lock mode as a support
- mode and use maximum levels of fontification, put in your ~/.emacs:
-
- (setq font-lock-support-mode 'lazy-lock-mode)
- (setq font-lock-maximum-decoration t)
-
- To fontify a buffer, without turning on Font Lock mode and regardless of buffer
- size, you can use \\[font-lock-fontify-buffer].
-
- To fontify a block (the function or paragraph containing point, or a number of
- lines around point), perhaps because modification on the current line caused
- syntactic change on other lines, you can use \\[font-lock-fontify-block].
-
- The default Font Lock mode faces and their attributes are defined in the
- variable `font-lock-face-attributes', and Font Lock mode default settings in
- the variable `font-lock-defaults-alist'. You can set your own default settings
- for some mode, by setting a buffer local value for `font-lock-defaults', via
- its mode hook."
- (interactive "P")
- ;; Don't turn on Font Lock mode if we don't have a display (we're running a
- ;; batch job) or if the buffer is invisible (the name starts with a space).
- (let ((on-p (and (not noninteractive)
- (not (eq (aref (buffer-name) 0) ?\ ))
- (if arg
- (> (prefix-numeric-value arg) 0)
- (not font-lock-mode)))))
- (set (make-local-variable 'font-lock-mode) on-p)
- ;; Turn on Font Lock mode.
- (when on-p
- (font-lock-set-defaults)
- (unless (eq font-lock-fontify-region-function 'ignore)
- (make-local-hook 'after-change-functions)
- (add-hook 'after-change-functions 'font-lock-after-change-function nil t))
- (font-lock-turn-on-thing-lock)
- (run-hooks 'font-lock-mode-hook)
- ;; Fontify the buffer if we have to.
- (let ((max-size (font-lock-value-in-major-mode font-lock-maximum-size)))
- (cond (font-lock-fontified
- nil)
- ((or (null max-size) (> max-size (buffer-size)))
- (font-lock-fontify-buffer))
- (font-lock-verbose
- (message "Fontifying %s...buffer too big" (buffer-name))))))
- ;; Turn off Font Lock mode.
- (when (not on-p)
- (remove-hook 'after-change-functions 'font-lock-after-change-function t)
- (font-lock-unfontify-buffer)
- (font-lock-turn-off-thing-lock)
- (font-lock-unset-defaults))
- (force-mode-line-update)))
-
- ;;;###autoload
- (defun turn-on-font-lock ()
- "Turn on Font Lock mode conditionally.
- Turn on only if the terminal can display it."
- (when window-system
- (font-lock-mode t)))
-
- ;; Global Font Lock mode.
- ;;
- ;; A few people have hassled in the past for a way to make it easier to turn on
- ;; Font Lock mode, without the user needing to know for which modes s/he has to
- ;; turn it on, perhaps the same way hilit19.el/hl319.el does. I've always
- ;; balked at that way, as I see it as just re-moulding the same problem in
- ;; another form. That is; some person would still have to keep track of which
- ;; modes (which may not even be distributed with Emacs) support Font Lock mode.
- ;; The list would always be out of date. And that person might have to be me.
-
- ;; Implementation.
- ;;
- ;; In a previous discussion the following hack came to mind. It is a gross
- ;; hack, but it generally works. We use the convention that major modes start
- ;; by calling the function `kill-all-local-variables', which in turn runs
- ;; functions on the hook variable `change-major-mode-hook'. We attach our
- ;; function `font-lock-change-major-mode' to that hook. Of course, when this
- ;; hook is run, the major mode is in the process of being changed and we do not
- ;; know what the final major mode will be. So, `font-lock-change-major-mode'
- ;; only (a) notes the name of the current buffer, and (b) adds our function
- ;; `turn-on-font-lock-if-enabled' to the hook variables `find-file-hooks' and
- ;; `post-command-hook' (for buffers that are not visiting files). By the time
- ;; the functions on the first of these hooks to be run are run, the new major
- ;; mode is assumed to be in place. This way we get a Font Lock function run
- ;; when a major mode is turned on, without knowing major modes or their hooks.
- ;;
- ;; Naturally this requires that (a) major modes run `kill-all-local-variables',
- ;; as they are supposed to do, and (b) the major mode is in place after the
- ;; file is visited or the command that ran `kill-all-local-variables' has
- ;; finished, whichever the sooner. Arguably, any major mode that does not
- ;; follow the convension (a) is broken, and I can't think of any reason why (b)
- ;; would not be met (except `gnudoit' on non-files). However, it is not clean.
- ;;
- ;; Probably the cleanest solution is to have each major mode function run some
- ;; hook, e.g., `major-mode-hook', but maybe implementing that change is
- ;; impractical. I am personally against making `setq' a macro or be advised,
- ;; or have a special function such as `set-major-mode', but maybe someone can
- ;; come up with another solution?
-
- ;; User interface.
- ;;
- ;; Although Global Font Lock mode is a pseudo-mode, I think that the user
- ;; interface should conform to the usual Emacs convention for modes, i.e., a
- ;; command to toggle the feature (`global-font-lock-mode') with a variable for
- ;; finer control of the mode's behaviour (`font-lock-global-modes').
- ;;
- ;; I don't think it is better that the feature be enabled via a variable, since
- ;; it does not conform to the usual convention. I don't think the feature
- ;; should be enabled by loading font-lock.el, since other mechanisms such as
- ;; M-x font-lock-mode RET or (add-hook 'c-mode-hook 'turn-on-font-lock) would
- ;; cause Font Lock mode to be turned on everywhere, and it is not intuitive or
- ;; informative because loading a file tells you nothing about the feature or
- ;; how to control it. It would be contrary to the Principle of Least Surprise.
-
- (defvar font-lock-buffers nil) ; For remembering buffers.
- (defvar global-font-lock-mode nil)
-
- ;;;###autoload
- (defvar font-lock-global-modes t
- "*Modes for which Font Lock mode is automagically turned on.
- Global Font Lock mode is controlled by the `global-font-lock-mode' command.
- If nil, means no modes have Font Lock mode automatically turned on.
- If t, all modes that support Font Lock mode have it automatically turned on.
- If a list, it should be a list of `major-mode' symbol names for which Font Lock
- mode should be automatically turned on. The sense of the list is negated if it
- begins with `not'. For example:
- (c-mode c++-mode)
- means that Font Lock mode is turned on for buffers in C and C++ modes only.")
-
- ;;;###autoload
- (defun global-font-lock-mode (&optional arg message)
- "Toggle Global Font Lock mode.
- With prefix ARG, turn Global Font Lock mode on if and only if ARG is positive.
- Displays a message saying whether the mode is on or off if MESSAGE is non-nil.
- Returns the new status of Global Font Lock mode (non-nil means on).
-
- When Global Font Lock mode is enabled, Font Lock mode is automagically
- turned on in a buffer if its major mode is one of `font-lock-global-modes'."
- (interactive "P\np")
- (let ((off-p (if arg
- (<= (prefix-numeric-value arg) 0)
- global-font-lock-mode)))
- (if off-p
- (remove-hook 'find-file-hooks 'turn-on-font-lock-if-enabled)
- (add-hook 'find-file-hooks 'turn-on-font-lock-if-enabled)
- (add-hook 'post-command-hook 'turn-on-font-lock-if-enabled)
- (setq font-lock-buffers (buffer-list)))
- (when message
- (message "Global Font Lock mode is now %s." (if off-p "OFF" "ON")))
- (setq global-font-lock-mode (not off-p))))
-
- (defun font-lock-change-major-mode ()
- ;; Turn off Font Lock mode if it's on.
- (when font-lock-mode
- (font-lock-mode nil))
- ;; Gross hack warning: Delicate readers should avert eyes now.
- ;; Something is running `kill-all-local-variables', which generally means the
- ;; major mode is being changed. Run `turn-on-font-lock-if-enabled' after the
- ;; file is visited or the current command has finished.
- (when global-font-lock-mode
- (add-hook 'post-command-hook 'turn-on-font-lock-if-enabled)
- (add-to-list 'font-lock-buffers (current-buffer))))
-
- (defun turn-on-font-lock-if-enabled ()
- ;; Gross hack warning: Delicate readers should avert eyes now.
- ;; Turn on Font Lock mode if it's supported by the major mode and enabled by
- ;; the user.
- (remove-hook 'post-command-hook 'turn-on-font-lock-if-enabled)
- (while font-lock-buffers
- (if (buffer-live-p (car font-lock-buffers))
- (save-excursion
- (set-buffer (car font-lock-buffers))
- (if (and (or font-lock-defaults
- (assq major-mode font-lock-defaults-alist))
- (or (eq font-lock-global-modes t)
- (if (eq (car-safe font-lock-global-modes) 'not)
- (not (memq major-mode (cdr font-lock-global-modes)))
- (memq major-mode font-lock-global-modes))))
- (let (inhibit-quit)
- (turn-on-font-lock)))))
- (setq font-lock-buffers (cdr font-lock-buffers))))
-
- (add-hook 'change-major-mode-hook 'font-lock-change-major-mode)
-
- ;; End of Global Font Lock mode.
-
- ;; Font Lock Support mode.
- ;;
- ;; This is the code used to interface font-lock.el with any of its add-on
- ;; packages, and provide the user interface. Packages that have their own
- ;; local buffer fontification functions (see below) may have to call
- ;; `font-lock-after-fontify-buffer' and/or `font-lock-after-unfontify-buffer'
- ;; themselves.
-
- ;;;###autoload
- (defvar font-lock-support-mode nil
- "*Support mode for Font Lock mode.
- Support modes speed up Font Lock mode by being choosy about when fontification
- occurs. Known support modes are Fast Lock mode (symbol `fast-lock-mode') and
- Lazy Lock mode (symbol `lazy-lock-mode'). See those modes for more info.
- If nil, means support for Font Lock mode is never performed.
- If a symbol, use that support mode.
- If a list, each element should be of the form (MAJOR-MODE . SUPPORT-MODE),
- where MAJOR-MODE is a symbol or t (meaning the default). For example:
- ((c-mode . fast-lock-mode) (c++-mode . fast-lock-mode) (t . lazy-lock-mode))
- means that Fast Lock mode is used to support Font Lock mode for buffers in C or
- C++ modes, and Lazy Lock mode is used to support Font Lock mode otherwise.
-
- The value of this variable is used when Font Lock mode is turned on.")
-
- (defun font-lock-turn-on-thing-lock ()
- (let ((thing-mode (font-lock-value-in-major-mode font-lock-support-mode)))
- (cond ((eq thing-mode 'fast-lock-mode)
- (fast-lock-mode t))
- ((eq thing-mode 'lazy-lock-mode)
- (lazy-lock-mode t)))))
-
- (defvar fast-lock-mode nil)
- (defvar lazy-lock-mode nil)
-
- (defun font-lock-turn-off-thing-lock ()
- (cond (fast-lock-mode
- (fast-lock-mode nil))
- (lazy-lock-mode
- (lazy-lock-mode nil))))
-
- (defun font-lock-after-fontify-buffer ()
- (cond (fast-lock-mode
- (fast-lock-after-fontify-buffer))
- (lazy-lock-mode
- (lazy-lock-after-fontify-buffer))))
-
- (defun font-lock-after-unfontify-buffer ()
- (cond (fast-lock-mode
- (fast-lock-after-unfontify-buffer))
- (lazy-lock-mode
- (lazy-lock-after-unfontify-buffer))))
-
- ;; End of Font Lock Support mode.
-
- ;; Fontification functions.
-
- ;;;###autoload
- (defun font-lock-fontify-buffer ()
- "Fontify the current buffer the way `font-lock-mode' would."
- (interactive)
- (let ((font-lock-verbose (or font-lock-verbose (interactive-p))))
- (funcall font-lock-fontify-buffer-function)))
-
- (defun font-lock-unfontify-buffer ()
- (funcall font-lock-unfontify-buffer-function))
-
- (defun font-lock-fontify-region (beg end &optional loudly)
- (funcall font-lock-fontify-region-function beg end loudly))
-
- (defun font-lock-unfontify-region (beg end)
- (funcall font-lock-unfontify-region-function beg end))
-
- (defun font-lock-default-fontify-buffer ()
- (let ((verbose (if (numberp font-lock-verbose)
- (> (buffer-size) font-lock-verbose)
- font-lock-verbose)))
- (if verbose (message "Fontifying %s..." (buffer-name)))
- ;; Make sure we have the right `font-lock-keywords' etc.
- (if (not font-lock-mode) (font-lock-set-defaults))
- ;; Make sure we fontify etc. in the whole buffer.
- (save-restriction
- (widen)
- (condition-case nil
- (save-excursion
- (save-match-data
- (font-lock-fontify-region (point-min) (point-max) verbose)
- (font-lock-after-fontify-buffer)
- (setq font-lock-fontified t)))
- ;; We don't restore the old fontification, so it's best to unfontify.
- (quit (font-lock-unfontify-buffer))))
- (if verbose (message "Fontifying %s...%s" (buffer-name)
- (if font-lock-fontified "done" "aborted")))))
-
- (defun font-lock-default-unfontify-buffer ()
- (save-restriction
- (widen)
- (font-lock-unfontify-region (point-min) (point-max))
- (font-lock-after-unfontify-buffer)
- (setq font-lock-fontified nil)))
-
- ;; We use this wrapper. However, `font-lock-fontify-region' used to be the
- ;; name used for `font-lock-fontify-syntactically-region', so a change isn't
- ;; back-compatible. But you shouldn't be calling these directly, should you?
- (defun font-lock-default-fontify-region (beg end loudly)
- (let ((modified (buffer-modified-p))
- (buffer-undo-list t) (inhibit-read-only t)
- (old-syntax-table (syntax-table))
- before-change-functions after-change-functions
- buffer-file-name buffer-file-truename)
- (unwind-protect
- (save-restriction
- (widen)
- ;; Use the fontification syntax table, if any.
- (if font-lock-syntax-table (set-syntax-table font-lock-syntax-table))
- ;; Now do the fontification.
- (if font-lock-keywords-only
- (font-lock-unfontify-region beg end)
- (font-lock-fontify-syntactically-region beg end loudly))
- (font-lock-fontify-keywords-region beg end loudly))
- ;; Clean up.
- (set-syntax-table old-syntax-table)
- (and (not modified) (buffer-modified-p) (set-buffer-modified-p nil)))))
-
- ;; The following must be rethought, since keywords can override fontification.
- ; ;; Now scan for keywords, but not if we are inside a comment now.
- ; (or (and (not font-lock-keywords-only)
- ; (let ((state (parse-partial-sexp beg end nil nil
- ; font-lock-cache-state)))
- ; (or (nth 4 state) (nth 7 state))))
- ; (font-lock-fontify-keywords-region beg end))
-
- (defun font-lock-default-unfontify-region (beg end)
- (let ((modified (buffer-modified-p))
- (buffer-undo-list t) (inhibit-read-only t)
- before-change-functions after-change-functions
- buffer-file-name buffer-file-truename)
- (remove-text-properties beg end '(face nil))
- (and (not modified) (buffer-modified-p) (set-buffer-modified-p nil))))
-
- ;; Called when any modification is made to buffer text.
- (defun font-lock-after-change-function (beg end old-len)
- (save-excursion
- (save-match-data
- ;; Rescan between start of line from `beg' and start of line after `end'.
- (font-lock-fontify-region
- (progn (goto-char beg) (beginning-of-line) (point))
- (progn (goto-char end) (forward-line 1) (point))))))
-
- (defun font-lock-fontify-block (&optional arg)
- "Fontify some lines the way `font-lock-fontify-buffer' would.
- The lines could be a function or paragraph, or a specified number of lines.
- If ARG is given, fontify that many lines before and after point, or 16 lines if
- no ARG is given and `font-lock-mark-block-function' is nil.
- If `font-lock-mark-block-function' non-nil and no ARG is given, it is used to
- delimit the region to fontify."
- (interactive "P")
- (let (font-lock-beginning-of-syntax-function deactivate-mark)
- ;; Make sure we have the right `font-lock-keywords' etc.
- (if (not font-lock-mode) (font-lock-set-defaults))
- (save-excursion
- (save-match-data
- (condition-case error-data
- (if (or arg (not font-lock-mark-block-function))
- (let ((lines (if arg (prefix-numeric-value arg) 16)))
- (font-lock-fontify-region
- (save-excursion (forward-line (- lines)) (point))
- (save-excursion (forward-line lines) (point))))
- (funcall font-lock-mark-block-function)
- (font-lock-fontify-region (point) (mark)))
- ((error quit) (message "Fontifying block...%s" error-data)))))))
-
- (define-key facemenu-keymap "\M-g" 'font-lock-fontify-block)
-
- ;; Syntactic fontification functions.
-
- ;; These record the parse state at a particular position, always the start of a
- ;; line. Used to make `font-lock-fontify-syntactically-region' faster.
- (defvar font-lock-cache-position nil)
- (defvar font-lock-cache-state nil)
- (make-variable-buffer-local 'font-lock-cache-position)
- (make-variable-buffer-local 'font-lock-cache-state)
-
- (defun font-lock-fontify-syntactically-region (start end &optional loudly)
- "Put proper face on each string and comment between START and END.
- START should be at the beginning of a line."
- (let ((synstart (cond (font-lock-comment-start-regexp
- (concat "\\s\"\\|" font-lock-comment-start-regexp))
- (comment-start-skip
- (concat "\\s\"\\|" comment-start-skip))
- (t
- "\\s\"")))
- (comstart (cond (font-lock-comment-start-regexp
- font-lock-comment-start-regexp)
- (comment-start-skip
- (concat "\\s<\\|" comment-start-skip))
- (t
- "\\s<")))
- state prev prevstate)
- (if loudly (message "Fontifying %s... (syntactically...)" (buffer-name)))
- (goto-char start)
- ;;
- ;; Find the state at the `beginning-of-line' before `start'.
- (if (eq start font-lock-cache-position)
- ;; Use the cache for the state of `start'.
- (setq state font-lock-cache-state)
- ;; Find the state of `start'.
- (if (null font-lock-beginning-of-syntax-function)
- ;; Use the state at the previous cache position, if any, or
- ;; otherwise calculate from `point-min'.
- (if (or (null font-lock-cache-position)
- (< start font-lock-cache-position))
- (setq state (parse-partial-sexp (point-min) start))
- (setq state (parse-partial-sexp font-lock-cache-position start
- nil nil font-lock-cache-state)))
- ;; Call the function to move outside any syntactic block.
- (funcall font-lock-beginning-of-syntax-function)
- (setq state (parse-partial-sexp (point) start)))
- ;; Cache the state and position of `start'.
- (setq font-lock-cache-state state
- font-lock-cache-position start))
- ;;
- ;; If the region starts inside a string, show the extent of it.
- (if (nth 3 state)
- (let ((beg (point)))
- (while (and (re-search-forward "\\s\"" end 'move)
- (nth 3 (parse-partial-sexp beg (point) nil nil state))))
- (put-text-property beg (point) 'face font-lock-string-face)
- (setq state (parse-partial-sexp beg (point) nil nil state))))
- ;;
- ;; Likewise for a comment.
- (if (or (nth 4 state) (nth 7 state))
- (let ((beg (point)))
- (save-restriction
- (narrow-to-region (point-min) end)
- (condition-case nil
- (progn
- (re-search-backward comstart (point-min) 'move)
- (forward-comment 1)
- ;; forward-comment skips all whitespace,
- ;; so go back to the real end of the comment.
- (skip-chars-backward " \t"))
- (error (goto-char end))))
- (put-text-property beg (point) 'face font-lock-comment-face)
- (setq state (parse-partial-sexp beg (point) nil nil state))))
- ;;
- ;; Find each interesting place between here and `end'.
- (while (and (< (point) end)
- (setq prev (point) prevstate state)
- (re-search-forward synstart end t)
- (progn
- ;; Clear out the fonts of what we skip over.
- (remove-text-properties prev (point) '(face nil))
- ;; Verify the state at that place
- ;; so we don't get fooled by \" or \;.
- (setq state (parse-partial-sexp prev (point)
- nil nil state))))
- (let ((here (point)))
- (if (or (nth 4 state) (nth 7 state))
- ;;
- ;; We found a real comment start.
- (let ((beg (or (match-end 1) (match-beginning 0))))
- (goto-char beg)
- (save-restriction
- (narrow-to-region (point-min) end)
- (condition-case nil
- (progn
- (forward-comment 1)
- ;; forward-comment skips all whitespace,
- ;; so go back to the real end of the comment.
- (skip-chars-backward " \t"))
- (error (goto-char end))))
- (put-text-property beg (point) 'face font-lock-comment-face)
- (setq state (parse-partial-sexp here (point) nil nil state)))
- (if (nth 3 state)
- ;;
- ;; We found a real string start.
- (let ((beg (or (match-end 1) (match-beginning 0))))
- (while (and (re-search-forward "\\s\"" end 'move)
- (nth 3 (parse-partial-sexp here (point)
- nil nil state))))
- (put-text-property beg (point) 'face font-lock-string-face)
- (setq state (parse-partial-sexp here (point)
- nil nil state))))))
- ;;
- ;; Make sure `prev' is non-nil after the loop
- ;; only if it was set on the very last iteration.
- (setq prev nil))
- ;;
- ;; Clean up.
- (and prev (remove-text-properties prev end '(face nil)))))
-
- ;;; Additional text property functions.
-
- ;; The following three text property functions are not generally available (and
- ;; it's not certain that they should be) so they are inlined for speed.
- ;; The case for `fillin-text-property' is simple; it may or not be generally
- ;; useful. (Since it is used here, it is useful in at least one place.;-)
- ;; However, the case for `append-text-property' and `prepend-text-property' is
- ;; more complicated. Should they remove duplicate property values or not? If
- ;; so, should the first or last duplicate item remain? Or the one that was
- ;; added? In our implementation, the first duplicate remains.
-
- (defsubst font-lock-fillin-text-property (start end prop value &optional object)
- "Fill in one property of the text from START to END.
- Arguments PROP and VALUE specify the property and value to put where none are
- already in place. Therefore existing property values are not overwritten.
- Optional argument OBJECT is the string or buffer containing the text."
- (let ((start (text-property-any start end prop nil object)) next)
- (while start
- (setq next (next-single-property-change start prop object end))
- (put-text-property start next prop value object)
- (setq start (text-property-any next end prop nil object)))))
-
- ;; This function (from simon's unique.el) is rewritten and inlined for speed.
- ;(defun unique (list function)
- ; "Uniquify LIST, deleting elements using FUNCTION.
- ;Return the list with subsequent duplicate items removed by side effects.
- ;FUNCTION is called with an element of LIST and a list of elements from LIST,
- ;and should return the list of elements with occurrences of the element removed,
- ;i.e., a function such as `delete' or `delq'.
- ;This function will work even if LIST is unsorted. See also `uniq'."
- ; (let ((list list))
- ; (while list
- ; (setq list (setcdr list (funcall function (car list) (cdr list))))))
- ; list)
-
- (defsubst font-lock-unique (list)
- "Uniquify LIST, deleting elements using `delq'.
- Return the list with subsequent duplicate items removed by side effects."
- (let ((list list))
- (while list
- (setq list (setcdr list (delq (car list) (cdr list))))))
- list)
-
- ;; A generalisation of `facemenu-add-face' for any property, but without the
- ;; removal of inactive faces via `facemenu-discard-redundant-faces' and special
- ;; treatment of `default'. Uses `unique' to remove duplicate property values.
- (defsubst font-lock-prepend-text-property (start end prop value &optional object)
- "Prepend to one property of the text from START to END.
- Arguments PROP and VALUE specify the property and value to prepend to the value
- already in place. The resulting property values are always lists, and unique.
- Optional argument OBJECT is the string or buffer containing the text."
- (let ((val (if (listp value) value (list value))) next prev)
- (while (/= start end)
- (setq next (next-single-property-change start prop object end)
- prev (get-text-property start prop object))
- (put-text-property
- start next prop
- (font-lock-unique (append val (if (listp prev) prev (list prev))))
- object)
- (setq start next))))
-
- (defsubst font-lock-append-text-property (start end prop value &optional object)
- "Append to one property of the text from START to END.
- Arguments PROP and VALUE specify the property and value to append to the value
- already in place. The resulting property values are always lists, and unique.
- Optional argument OBJECT is the string or buffer containing the text."
- (let ((val (if (listp value) value (list value))) next prev)
- (while (/= start end)
- (setq next (next-single-property-change start prop object end)
- prev (get-text-property start prop object))
- (put-text-property
- start next prop
- (font-lock-unique (append (if (listp prev) prev (list prev)) val))
- object)
- (setq start next))))
-
- ;;; Regexp fontification functions.
-
- (defsubst font-lock-apply-highlight (highlight)
- "Apply HIGHLIGHT following a match.
- HIGHLIGHT should be of the form MATCH-HIGHLIGHT, see `font-lock-keywords'."
- (let* ((match (nth 0 highlight))
- (start (match-beginning match)) (end (match-end match))
- (override (nth 2 highlight)))
- (cond ((not start)
- ;; No match but we might not signal an error.
- (or (nth 3 highlight)
- (error "No match %d in highlight %S" match highlight)))
- ((not override)
- ;; Cannot override existing fontification.
- (or (text-property-not-all start end 'face nil)
- (put-text-property start end 'face (eval (nth 1 highlight)))))
- ((eq override t)
- ;; Override existing fontification.
- (put-text-property start end 'face (eval (nth 1 highlight))))
- ((eq override 'keep)
- ;; Keep existing fontification.
- (font-lock-fillin-text-property start end 'face
- (eval (nth 1 highlight))))
- ((eq override 'prepend)
- ;; Prepend to existing fontification.
- (font-lock-prepend-text-property start end 'face
- (eval (nth 1 highlight))))
- ((eq override 'append)
- ;; Append to existing fontification.
- (font-lock-append-text-property start end 'face
- (eval (nth 1 highlight)))))))
-
- (defsubst font-lock-fontify-anchored-keywords (keywords limit)
- "Fontify according to KEYWORDS until LIMIT.
- KEYWORDS should be of the form MATCH-ANCHORED, see `font-lock-keywords'."
- (let ((matcher (nth 0 keywords)) (lowdarks (nthcdr 3 keywords)) highlights)
- ;; Until we come up with a cleaner solution, we make LIMIT the end of line.
- (save-excursion (end-of-line) (setq limit (min limit (point))))
- ;; Evaluate PRE-MATCH-FORM.
- (eval (nth 1 keywords))
- (save-match-data
- ;; Find an occurrence of `matcher' before `limit'.
- (while (if (stringp matcher)
- (re-search-forward matcher limit t)
- (funcall matcher limit))
- ;; Apply each highlight to this instance of `matcher'.
- (setq highlights lowdarks)
- (while highlights
- (font-lock-apply-highlight (car highlights))
- (setq highlights (cdr highlights)))))
- ;; Evaluate POST-MATCH-FORM.
- (eval (nth 2 keywords))))
-
- (defun font-lock-fontify-keywords-region (start end &optional loudly)
- "Fontify according to `font-lock-keywords' between START and END.
- START should be at the beginning of a line."
- (let ((case-fold-search font-lock-keywords-case-fold-search)
- (keywords (cdr (if (eq (car-safe font-lock-keywords) t)
- font-lock-keywords
- (font-lock-compile-keywords))))
- (bufname (buffer-name)) (count 0)
- keyword matcher highlights)
- ;;
- ;; Fontify each item in `font-lock-keywords' from `start' to `end'.
- (while keywords
- (if loudly (message "Fontifying %s... (regexps..%s)" bufname
- (make-string (setq count (1+ count)) ?.)))
- ;;
- ;; Find an occurrence of `matcher' from `start' to `end'.
- (setq keyword (car keywords) matcher (car keyword))
- (goto-char start)
- (while (if (stringp matcher)
- (re-search-forward matcher end t)
- (funcall matcher end))
- ;; Apply each highlight to this instance of `matcher', which may be
- ;; specific highlights or more keywords anchored to `matcher'.
- (setq highlights (cdr keyword))
- (while highlights
- (if (numberp (car (car highlights)))
- (font-lock-apply-highlight (car highlights))
- (font-lock-fontify-anchored-keywords (car highlights) end))
- (setq highlights (cdr highlights))))
- (setq keywords (cdr keywords)))))
-
- ;; Various functions.
-
- (defun font-lock-compile-keywords (&optional keywords)
- ;; Compile `font-lock-keywords' into the form (t KEYWORD ...) where KEYWORD
- ;; is the (MATCHER HIGHLIGHT ...) shown in the variable's doc string.
- (let ((keywords (or keywords font-lock-keywords)))
- (setq font-lock-keywords
- (if (eq (car-safe keywords) t)
- keywords
- (cons t (mapcar 'font-lock-compile-keyword keywords))))))
-
- (defun font-lock-compile-keyword (keyword)
- (cond ((nlistp keyword) ; Just MATCHER
- (list keyword '(0 font-lock-keyword-face)))
- ((eq (car keyword) 'eval) ; Specified (eval . FORM)
- (font-lock-compile-keyword (eval (cdr keyword))))
- ((numberp (cdr keyword)) ; Specified (MATCHER . MATCH)
- (list (car keyword) (list (cdr keyword) 'font-lock-keyword-face)))
- ((symbolp (cdr keyword)) ; Specified (MATCHER . FACENAME)
- (list (car keyword) (list 0 (cdr keyword))))
- ((nlistp (nth 1 keyword)) ; Specified (MATCHER . HIGHLIGHT)
- (list (car keyword) (cdr keyword)))
- (t ; Hopefully (MATCHER HIGHLIGHT ...)
- keyword)))
-
- (defun font-lock-value-in-major-mode (alist)
- ;; Return value in ALIST for `major-mode', or ALIST if it is not an alist.
- ;; Alist structure is ((MAJOR-MODE . VALUE)) where MAJOR-MODE may be t.
- (if (consp alist)
- (cdr (or (assq major-mode alist) (assq t alist)))
- alist))
-
- (defun font-lock-choose-keywords (keywords level)
- ;; Return LEVELth element of KEYWORDS. A LEVEL of nil is equal to a
- ;; LEVEL of 0, a LEVEL of t is equal to (1- (length KEYWORDS)).
- (cond ((symbolp keywords)
- keywords)
- ((numberp level)
- (or (nth level keywords) (car (reverse keywords))))
- ((eq level t)
- (car (reverse keywords)))
- (t
- (car keywords))))
-
- (defun font-lock-set-defaults ()
- "Set fontification defaults appropriately for this mode.
- Sets various variables using `font-lock-defaults' (or, if nil, using
- `font-lock-defaults-alist') and `font-lock-maximum-decoration'."
- ;; Set face defaults.
- (font-lock-make-faces)
- ;; Set fontification defaults.
- (make-local-variable 'font-lock-fontified)
- (if (member font-lock-keywords '(nil (t)))
- (let* ((defaults (or font-lock-defaults
- (cdr (assq major-mode font-lock-defaults-alist))))
- (keywords
- (font-lock-choose-keywords (nth 0 defaults)
- (font-lock-value-in-major-mode font-lock-maximum-decoration))))
- ;; Regexp fontification?
- (setq font-lock-keywords (if (fboundp keywords)
- (funcall keywords)
- (eval keywords)))
- ;; Syntactic fontification?
- (if (nth 1 defaults)
- (set (make-local-variable 'font-lock-keywords-only) t))
- ;; Case fold during regexp fontification?
- (if (nth 2 defaults)
- (set (make-local-variable 'font-lock-keywords-case-fold-search) t))
- ;; Syntax table for regexp and syntactic fontification?
- (if (nth 3 defaults)
- (let ((slist (nth 3 defaults)))
- (set (make-local-variable 'font-lock-syntax-table)
- (copy-syntax-table (syntax-table)))
- (while slist
- ;; The character to modify may be a single CHAR or a STRING.
- (let ((chars (if (numberp (car (car slist)))
- (list (car (car slist)))
- (mapcar 'identity (car (car slist)))))
- (syntax (cdr (car slist))))
- (while chars
- (modify-syntax-entry (car chars) syntax
- font-lock-syntax-table)
- (setq chars (cdr chars)))
- (setq slist (cdr slist))))))
- ;; Syntax function for syntactic fontification?
- (if (nth 4 defaults)
- (set (make-local-variable 'font-lock-beginning-of-syntax-function)
- (nth 4 defaults)))
- ;; Variable alist?
- (let ((alist (nthcdr 5 defaults)))
- (while alist
- (set (make-local-variable (car (car alist))) (cdr (car alist)))
- (setq alist (cdr alist)))))))
-
- (defun font-lock-unset-defaults ()
- "Unset fontification defaults. See `font-lock-set-defaults'."
- (setq font-lock-keywords nil
- font-lock-keywords-only nil
- font-lock-keywords-case-fold-search nil
- font-lock-syntax-table nil
- font-lock-beginning-of-syntax-function nil)
- (let* ((defaults (or font-lock-defaults
- (cdr (assq major-mode font-lock-defaults-alist))))
- (alist (nthcdr 5 defaults)))
- (while alist
- (set (car (car alist)) (default-value (car (car alist))))
- (setq alist (cdr alist)))))
-
- ;; Colour etc. support.
-
- ;; This section of code is crying out for revision.
-
- ;; To begin with, `display-type' and `background-mode' are `frame-parameters'
- ;; so we don't have to calculate them here anymore. But all the face stuff
- ;; should be frame-local (and thus display-local) anyway. Because we're not
- ;; sure what support Emacs is going to have for general frame-local face
- ;; attributes, we leave this section of code as it is. For now. --sm.
-
- (defvar font-lock-display-type nil
- "A symbol indicating the display Emacs is running under.
- The symbol should be one of `color', `grayscale' or `mono'.
- If Emacs guesses this display attribute wrongly, either set this variable in
- your `~/.emacs' or set the resource `Emacs.displayType' in your `~/.Xdefaults'.
- See also `font-lock-background-mode' and `font-lock-face-attributes'.")
-
- (defvar font-lock-background-mode nil
- "A symbol indicating the Emacs background brightness.
- The symbol should be one of `light' or `dark'.
- If Emacs guesses this frame attribute wrongly, either set this variable in
- your `~/.emacs' or set the resource `Emacs.backgroundMode' in your
- `~/.Xdefaults'.
- See also `font-lock-display-type' and `font-lock-face-attributes'.")
-
- (defvar font-lock-face-attributes nil
- "A list of default attributes to use for face attributes.
- Each element of the list should be of the form
-
- (FACE FOREGROUND BACKGROUND BOLD-P ITALIC-P UNDERLINE-P)
-
- where FACE should be one of the face symbols `font-lock-comment-face',
- `font-lock-string-face', `font-lock-keyword-face', `font-lock-type-face',
- `font-lock-function-name-face', `font-lock-variable-name-face', and
- `font-lock-reference-face'. A form for each of these face symbols should be
- provided in the list, but other face symbols and attributes may be given and
- used in highlighting. See `font-lock-keywords'.
-
- Subsequent element items should be the attributes for the corresponding
- Font Lock mode faces. Attributes FOREGROUND and BACKGROUND should be strings
- \(default if nil), while BOLD-P, ITALIC-P, and UNDERLINE-P should specify the
- corresponding face attributes (yes if non-nil).
-
- Emacs uses default attributes based on display type and background brightness.
- See variables `font-lock-display-type' and `font-lock-background-mode'.
-
- Resources can be used to over-ride these face attributes. For example, the
- resource `Emacs.font-lock-comment-face.attributeUnderline' can be used to
- specify the UNDERLINE-P attribute for face `font-lock-comment-face'.")
-
- (defun font-lock-make-faces (&optional override)
- "Make faces from `font-lock-face-attributes'.
- A default list is used if this is nil.
- If optional OVERRIDE is non-nil, faces that already exist are reset.
- See `font-lock-make-face' and `list-faces-display'."
- ;; We don't need to `setq' any of these variables, but the user can see what
- ;; is being used if we do.
- (if (null font-lock-display-type)
- (setq font-lock-display-type
- (let ((display-resource (x-get-resource ".displayType"
- "DisplayType")))
- (cond (display-resource (intern (downcase display-resource)))
- ((x-display-color-p) 'color)
- ((x-display-grayscale-p) 'grayscale)
- (t 'mono)))))
- (if (null font-lock-background-mode)
- (setq font-lock-background-mode
- (let ((bg-resource (x-get-resource ".backgroundMode"
- "BackgroundMode"))
- (params (frame-parameters)))
- (cond (bg-resource (intern (downcase bg-resource)))
- ((eq system-type 'ms-dos)
- (if (string-match "light"
- (cdr (assq 'background-color params)))
- 'light
- 'dark))
- ((< (apply '+ (x-color-values
- (cdr (assq 'background-color params))))
- (* (apply '+ (x-color-values "white")) .6))
- 'dark)
- (t 'light)))))
- (if (null font-lock-face-attributes)
- (setq font-lock-face-attributes
- (let ((light-bg (eq font-lock-background-mode 'light)))
- (cond ((memq font-lock-display-type '(mono monochrome))
- ;; Emacs 19.25's font-lock defaults:
- ;;'((font-lock-comment-face nil nil nil t nil)
- ;; (font-lock-string-face nil nil nil nil t)
- ;; (font-lock-keyword-face nil nil t nil nil)
- ;; (font-lock-function-name-face nil nil t t nil)
- ;; (font-lock-type-face nil nil nil t nil))
- (list '(font-lock-comment-face nil nil t t nil)
- '(font-lock-string-face nil nil nil t nil)
- '(font-lock-keyword-face nil nil t nil nil)
- (list
- 'font-lock-function-name-face
- (cdr (assq 'background-color (frame-parameters)))
- (cdr (assq 'foreground-color (frame-parameters)))
- t nil nil)
- '(font-lock-variable-name-face nil nil t t nil)
- '(font-lock-type-face nil nil t nil t)
- '(font-lock-reference-face nil nil t nil t)))
- ((memq font-lock-display-type '(grayscale greyscale
- grayshade greyshade))
- (list
- (list 'font-lock-comment-face
- nil (if light-bg "Gray80" "DimGray") t t nil)
- (list 'font-lock-string-face
- nil (if light-bg "Gray50" "LightGray") nil t nil)
- (list 'font-lock-keyword-face
- nil (if light-bg "Gray90" "DimGray") t nil nil)
- (list 'font-lock-function-name-face
- (cdr (assq 'background-color (frame-parameters)))
- (cdr (assq 'foreground-color (frame-parameters)))
- t nil nil)
- (list 'font-lock-variable-name-face
- nil (if light-bg "Gray90" "DimGray") t t nil)
- (list 'font-lock-type-face
- nil (if light-bg "Gray80" "DimGray") t nil t)
- (list 'font-lock-reference-face
- nil (if light-bg "LightGray" "Gray50") t nil t)))
- (light-bg ; light colour background
- '((font-lock-comment-face "Firebrick")
- (font-lock-string-face "RosyBrown")
- (font-lock-keyword-face "Purple")
- (font-lock-function-name-face "Blue")
- (font-lock-variable-name-face "DarkGoldenrod")
- (font-lock-type-face "DarkOliveGreen")
- (font-lock-reference-face "CadetBlue")))
- (t ; dark colour background
- '((font-lock-comment-face "OrangeRed")
- (font-lock-string-face "LightSalmon")
- (font-lock-keyword-face "LightSteelBlue")
- (font-lock-function-name-face "LightSkyBlue")
- (font-lock-variable-name-face "LightGoldenrod")
- (font-lock-type-face "PaleGreen")
- (font-lock-reference-face "Aquamarine")))))))
- ;; Now make the faces if we have to.
- (mapcar (function
- (lambda (face-attributes)
- (let ((face (nth 0 face-attributes)))
- (cond (override
- ;; We can stomp all over it anyway. Get outta my face!
- (font-lock-make-face face-attributes))
- ((and (boundp face) (facep (symbol-value face)))
- ;; The variable exists and is already bound to a face.
- nil)
- ((facep face)
- ;; We already have a face so we bind the variable to it.
- (set face face))
- (t
- ;; No variable or no face.
- (font-lock-make-face face-attributes))))))
- font-lock-face-attributes))
-
- (defun font-lock-make-face (face-attributes)
- "Make a face from FACE-ATTRIBUTES.
- FACE-ATTRIBUTES should be like an element `font-lock-face-attributes', so that
- the face name is the first item in the list. A variable with the same name as
- the face is also set; its value is the face name."
- (let* ((face (nth 0 face-attributes))
- (face-name (symbol-name face))
- (set-p (function (lambda (face-name resource)
- (x-get-resource (concat face-name ".attribute" resource)
- (concat "Face.Attribute" resource)))))
- (on-p (function (lambda (face-name resource)
- (let ((set (funcall set-p face-name resource)))
- (and set (member (downcase set) '("on" "true"))))))))
- (make-face face)
- (add-to-list 'facemenu-unlisted-faces face)
- ;; Set attributes not set from X resources (and therefore `make-face').
- (or (funcall set-p face-name "Foreground")
- (condition-case nil
- (set-face-foreground face (nth 1 face-attributes))
- (error nil)))
- (or (funcall set-p face-name "Background")
- (condition-case nil
- (set-face-background face (nth 2 face-attributes))
- (error nil)))
- (if (funcall set-p face-name "Bold")
- (and (funcall on-p face-name "Bold") (make-face-bold face nil t))
- (and (nth 3 face-attributes) (make-face-bold face nil t)))
- (if (funcall set-p face-name "Italic")
- (and (funcall on-p face-name "Italic") (make-face-italic face nil t))
- (and (nth 4 face-attributes) (make-face-italic face nil t)))
- (or (funcall set-p face-name "Underline")
- (set-face-underline-p face (nth 5 face-attributes)))
- (set face face)))
-
- ;;; Various regexp information shared by several modes.
- ;;; Information specific to a single mode should go in its load library.
-
- (defconst lisp-font-lock-keywords-1
- (list
- ;; Anything not a variable or type declaration is fontified as a function.
- ;; It would be cleaner to allow preceding whitespace, but it would also be
- ;; about five times slower.
- (list (concat "^(\\(def\\("
- ;; Variable declarations.
- "\\(const\\(\\|ant\\)\\|ine-key\\(\\|-after\\)\\|var\\)\\|"
- ;; Structure declarations.
- "\\(class\\|struct\\|type\\)\\|"
- ;; Everything else is a function declaration.
- "\\([^ \t\n\(\)]+\\)"
- "\\)\\)\\>"
- ;; Any whitespace and declared object.
- "[ \t'\(]*"
- "\\(\\sw+\\)?")
- '(1 font-lock-keyword-face)
- '(8 (cond ((match-beginning 3) font-lock-variable-name-face)
- ((match-beginning 6) font-lock-type-face)
- (t font-lock-function-name-face))
- nil t))
- )
- "Subdued level highlighting for Lisp modes.")
-
- (defconst lisp-font-lock-keywords-2
- (append lisp-font-lock-keywords-1
- (list
- ;;
- ;; Control structures. ELisp and CLisp combined.
- ; (make-regexp
- ; '("cond" "if" "while" "let\\*?" "prog[nv12*]?" "inline" "catch" "throw"
- ; "save-restriction" "save-excursion" "save-window-excursion"
- ; "save-selected-window" "save-match-data" "unwind-protect"
- ; "condition-case" "track-mouse"
- ; "eval-after-load" "eval-and-compile" "eval-when-compile"
- ; "when" "unless" "do" "flet" "labels" "return" "return-from"
- ; "with-output-to-temp-buffer" "with-timeout"))
- (cons
- (concat
- "(\\("
- "c\\(atch\\|ond\\(\\|ition-case\\)\\)\\|do\\|"
- "eval-\\(a\\(fter-load\\|nd-compile\\)\\|when-compile\\)\\|flet\\|"
- "i\\(f\\|nline\\)\\|l\\(abels\\|et\\*?\\)\\|prog[nv12*]?\\|"
- "return\\(\\|-from\\)\\|save-\\(excursion\\|match-data\\|restriction\\|"
- "selected-window\\|window-excursion\\)\\|t\\(hrow\\|rack-mouse\\)\\|"
- "un\\(less\\|wind-protect\\)\\|"
- "w\\(h\\(en\\|ile\\)\\|ith-\\(output-to-temp-buffer\\|timeout\\)\\)"
- "\\)\\>") 1)
- ;;
- ;; Feature symbols as references.
- '("(\\(featurep\\|provide\\|require\\)\\>[ \t']*\\(\\sw+\\)?"
- (1 font-lock-keyword-face) (2 font-lock-reference-face nil t))
- ;;
- ;; Words inside \\[] tend to be for `substitute-command-keys'.
- '("\\\\\\\\\\[\\(\\sw+\\)]" 1 font-lock-reference-face prepend)
- ;;
- ;; Words inside `' tend to be symbol names.
- '("`\\(\\sw\\sw+\\)'" 1 font-lock-reference-face prepend)
- ;;
- ;; CLisp `:' keywords as references.
- '("\\<:\\sw+\\>" 0 font-lock-reference-face prepend)
- ;;
- ;; ELisp and CLisp `&' keywords as types.
- '("\\<\\&\\sw+\\>" . font-lock-type-face)
- ))
- "Gaudy level highlighting for Lisp modes.")
-
- (defvar lisp-font-lock-keywords lisp-font-lock-keywords-1
- "Default expressions to highlight in Lisp modes.")
-
-
- (defvar scheme-font-lock-keywords
- (eval-when-compile
- (list
- ;;
- ;; Declarations. Hannes Haug <hannes.haug@student.uni-tuebingen.de> says
- ;; this works for SOS, STklos, SCOOPS, Meroon and Tiny CLOS.
- (list (concat "(\\(define\\("
- ;; Function names.
- "\\(\\|-\\(generic\\(\\|-procedure\\)\\|method\\)\\)\\|"
- ;; Macro names, as variable names. A bit dubious, this.
- "\\(-syntax\\)\\|"
- ;; Class names.
- "\\(-class\\)"
- "\\)\\)\\>"
- ;; Any whitespace and declared object.
- "[ \t]*(?"
- "\\(\\sw+\\)?")
- '(1 font-lock-keyword-face)
- '(8 (cond ((match-beginning 3) font-lock-function-name-face)
- ((match-beginning 6) font-lock-variable-name-face)
- (t font-lock-type-face))
- nil t))
- ;;
- ;; Control structures.
- ;(make-regexp '("begin" "call-with-current-continuation" "call/cc"
- ; "call-with-input-file" "call-with-output-file" "case" "cond"
- ; "do" "else" "for-each" "if" "lambda"
- ; "let\\*?" "let-syntax" "letrec" "letrec-syntax"
- ; ;; Hannes Haug <hannes.haug@student.uni-tuebingen.de> wants:
- ; "and" "or" "delay"
- ; ;; Stefan Monnier <stefan.monnier@epfl.ch> says don't bother:
- ; ;;"quasiquote" "quote" "unquote" "unquote-splicing"
- ; "map" "syntax" "syntax-rules"))
- (cons
- (concat "(\\("
- "and\\|begin\\|c\\(a\\(ll\\(-with-\\(current-continuation\\|"
- "input-file\\|output-file\\)\\|/cc\\)\\|se\\)\\|ond\\)\\|"
- "d\\(elay\\|o\\)\\|else\\|for-each\\|if\\|"
- "l\\(ambda\\|et\\(-syntax\\|\\*?\\|rec\\(\\|-syntax\\)\\)\\)\\|"
- "map\\|or\\|syntax\\(\\|-rules\\)"
- "\\)\\>") 1)
- ;;
- ;; David Fox <fox@graphics.cs.nyu.edu> for SOS/STklos class specifiers.
- '("\\<<\\sw+>\\>" . font-lock-type-face)
- ;;
- ;; Scheme `:' keywords as references.
- '("\\<:\\sw+\\>" . font-lock-reference-face)
- ))
- "Default expressions to highlight in Scheme modes.")
-
-
- (defconst c-font-lock-keywords-1 nil
- "Subdued level highlighting for C modes.")
-
- (defconst c-font-lock-keywords-2 nil
- "Medium level highlighting for C modes.")
-
- (defconst c-font-lock-keywords-3 nil
- "Gaudy level highlighting for C modes.")
-
- (defconst c++-font-lock-keywords-1 nil
- "Subdued level highlighting for C++ modes.")
-
- (defconst c++-font-lock-keywords-2 nil
- "Medium level highlighting for C++ modes.")
-
- (defconst c++-font-lock-keywords-3 nil
- "Gaudy level highlighting for C++ modes.")
-
- (defun font-lock-match-c++-style-declaration-item-and-skip-to-next (limit)
- ;; Match, and move over, any declaration/definition item after point.
- ;; The expect syntax of an item is "word" or "word::word", possibly ending
- ;; with optional whitespace and a "(". Everything following the item (but
- ;; belonging to it) is expected to by skip-able by `forward-sexp', and items
- ;; are expected to be separated with a ",".
- ;;
- ;; The regexp matches: word::word (
- ;; ^^^^ ^^^^ ^
- ;; Match subexps are: 1 3 4
- ;;
- ;; So, the item is delimited by (match-beginning 1) and (match-end 1).
- ;; If (match-beginning 3) is non-nil, that part of the item follows a ":".
- ;; If (match-beginning 4) is non-nil, the item is followed by a "(".
- (if (looking-at "[ \t*&]*\\(\\sw+\\)\\(::\\(\\sw+\\)\\)?[ \t]*\\((\\)?")
- (save-match-data
- (condition-case nil
- (save-restriction
- ;; Restrict to the end of line, currently guaranteed to be LIMIT.
- (narrow-to-region (point-min) limit)
- (goto-char (match-end 1))
- ;; Move over any item value, etc., to the next item.
- (while (not (looking-at "[ \t]*\\(\\(,\\)\\|;\\|$\\)"))
- (goto-char (or (scan-sexps (point) 1) (point-max))))
- (goto-char (match-end 2)))
- (error t)))))
-
- (let ((c-keywords
- ; ("break" "continue" "do" "else" "for" "if" "return" "switch" "while")
- "break\\|continue\\|do\\|else\\|for\\|if\\|return\\|switch\\|while")
- (c-type-types
- ; ("auto" "extern" "register" "static" "typedef" "struct" "union" "enum"
- ; "signed" "unsigned" "short" "long" "int" "char" "float" "double"
- ; "void" "volatile" "const")
- (concat "auto\\|c\\(har\\|onst\\)\\|double\\|e\\(num\\|xtern\\)\\|"
- "float\\|int\\|long\\|register\\|"
- "s\\(hort\\|igned\\|t\\(atic\\|ruct\\)\\)\\|typedef\\|"
- "un\\(ion\\|signed\\)\\|vo\\(id\\|latile\\)")) ; 6 ()s deep.
- (c++-keywords
- ; ("break" "continue" "do" "else" "for" "if" "return" "switch" "while"
- ; "asm" "catch" "delete" "new" "operator" "sizeof" "this" "throw" "try"
- ; "protected" "private" "public")
- (concat "asm\\|break\\|c\\(atch\\|ontinue\\)\\|d\\(elete\\|o\\)\\|"
- "else\\|for\\|if\\|new\\|"
- "p\\(r\\(ivate\\|otected\\)\\|ublic\\)\\|return\\|"
- "s\\(izeof\\|witch\\)\\|t\\(h\\(is\\|row\\)\\|ry\\)\\|while"))
- (c++-type-types
- ; ("auto" "extern" "register" "static" "typedef" "struct" "union" "enum"
- ; "signed" "unsigned" "short" "long" "int" "char" "float" "double"
- ; "void" "volatile" "const" "class" "inline" "friend" "bool"
- ; "virtual" "complex" "template")
- (concat "auto\\|bool\\|c\\(har\\|lass\\|o\\(mplex\\|nst\\)\\)\\|"
- "double\\|e\\(num\\|xtern\\)\\|f\\(loat\\|riend\\)\\|"
- "in\\(line\\|t\\)\\|long\\|register\\|"
- "s\\(hort\\|igned\\|t\\(atic\\|ruct\\)\\)\\|"
- "t\\(emplate\\|ypedef\\)\\|un\\(ion\\|signed\\)\\|"
- "v\\(irtual\\|o\\(id\\|latile\\)\\)")) ; 11 ()s deep.
- )
- (setq c-font-lock-keywords-1
- (list
- ;;
- ;; These are all anchored at the beginning of line for speed.
- ;;
- ;; Fontify function name definitions (GNU style; without type on line).
- (list (concat "^\\(\\sw+\\)[ \t]*(") 1 'font-lock-function-name-face)
- ;;
- ;; Fontify filenames in #include <...> preprocessor directives as strings.
- '("^#[ \t]*include[ \t]+\\(<[^>\"\n]+>\\)" 1 font-lock-string-face)
- ;;
- ;; Fontify function macro names.
- '("^#[ \t]*define[ \t]+\\(\\sw+\\)(" 1 font-lock-function-name-face)
- ;;
- ;; Fontify symbol names in #elif or #if ... defined preprocessor directives.
- '("^#[ \t]*\\(elif\\|if\\)\\>"
- ("\\<\\(defined\\)\\>[ \t]*(?\\(\\sw+\\)?" nil nil
- (1 font-lock-reference-face) (2 font-lock-variable-name-face nil t)))
- ;;
- ;; Fontify otherwise as symbol names, and the preprocessor directive names.
- '("^#[ \t]*\\(\\sw+\\)\\>[ \t]*\\(\\sw+\\)?"
- (1 font-lock-reference-face) (2 font-lock-variable-name-face nil t))
- ))
-
- (setq c-font-lock-keywords-2
- (append c-font-lock-keywords-1
- (list
- ;;
- ;; Simple regexps for speed.
- ;;
- ;; Fontify all type specifiers.
- (cons (concat "\\<\\(" c-type-types "\\)\\>") 'font-lock-type-face)
- ;;
- ;; Fontify all builtin keywords (except case, default and goto; see below).
- (cons (concat "\\<\\(" c-keywords "\\)\\>") 'font-lock-keyword-face)
- ;;
- ;; Fontify case/goto keywords and targets, and case default/goto tags.
- '("\\<\\(case\\|goto\\)\\>[ \t]*\\(\\sw+\\)?"
- (1 font-lock-keyword-face) (2 font-lock-reference-face nil t))
- '("^[ \t]*\\(\\sw+\\)[ \t]*:" 1 font-lock-reference-face)
- )))
-
- (setq c-font-lock-keywords-3
- (append c-font-lock-keywords-2
- ;;
- ;; More complicated regexps for more complete highlighting for types.
- ;; We still have to fontify type specifiers individually, as C is so hairy.
- (list
- ;;
- ;; Fontify all storage classes and type specifiers, plus their items.
- (list (concat "\\<\\(" c-type-types "\\)\\>"
- "\\([ \t*&]+\\sw+\\>\\)*")
- ;; Fontify each declaration item.
- '(font-lock-match-c++-style-declaration-item-and-skip-to-next
- ;; Start with point after all type specifiers.
- (goto-char (or (match-beginning 8) (match-end 1)))
- ;; Finish with point after first type specifier.
- (goto-char (match-end 1))
- ;; Fontify as a variable or function name.
- (1 (if (match-beginning 4)
- font-lock-function-name-face
- font-lock-variable-name-face))))
- ;;
- ;; Fontify structures, or typedef names, plus their items.
- '("\\(}\\)[ \t*]*\\sw"
- (font-lock-match-c++-style-declaration-item-and-skip-to-next
- (goto-char (match-end 1)) nil
- (1 (if (match-beginning 4)
- font-lock-function-name-face
- font-lock-variable-name-face))))
- ;;
- ;; Fontify anything at beginning of line as a declaration or definition.
- '("^\\(\\sw+\\)\\>\\([ \t*]+\\sw+\\>\\)*"
- (1 font-lock-type-face)
- (font-lock-match-c++-style-declaration-item-and-skip-to-next
- (goto-char (or (match-beginning 2) (match-end 1))) nil
- (1 (if (match-beginning 4)
- font-lock-function-name-face
- font-lock-variable-name-face))))
- )))
-
- (setq c++-font-lock-keywords-1
- (append
- ;;
- ;; The list `c-font-lock-keywords-1' less that for function names.
- (cdr c-font-lock-keywords-1)
- ;;
- ;; Fontify function name definitions, possibly incorporating class name.
- (list
- '("^\\(\\sw+\\)\\(::\\(\\sw+\\)\\)?[ \t]*("
- (1 (if (match-beginning 2)
- font-lock-type-face
- font-lock-function-name-face))
- (3 font-lock-function-name-face nil t))
- )))
-
- (setq c++-font-lock-keywords-2
- (append c++-font-lock-keywords-1
- (list
- ;;
- ;; The list `c-font-lock-keywords-2' for C++ plus operator overloading.
- (cons (concat "\\<\\(" c++-type-types "\\)\\>") 'font-lock-type-face)
- ;;
- ;; Fontify operator function name overloading.
- '("\\<\\(operator\\)\\>[ \t]*\\([[(><!=+-][])><=+-]?\\)?"
- (1 font-lock-keyword-face) (2 font-lock-function-name-face nil t))
- ;;
- ;; Fontify case/goto keywords and targets, and case default/goto tags.
- '("\\<\\(case\\|goto\\)\\>[ \t]*\\(\\sw+\\)?"
- (1 font-lock-keyword-face) (2 font-lock-reference-face nil t))
- '("^[ \t]*\\(\\sw+\\)[ \t]*:[^:]" 1 font-lock-reference-face)
- ;;
- ;; Fontify other builtin keywords.
- (cons (concat "\\<\\(" c++-keywords "\\)\\>") 'font-lock-keyword-face)
- )))
-
- (setq c++-font-lock-keywords-3
- (append c++-font-lock-keywords-2
- ;;
- ;; More complicated regexps for more complete highlighting for types.
- (list
- ;;
- ;; Fontify all storage classes and type specifiers, plus their items.
- (list (concat "\\<\\(" c++-type-types "\\)\\>"
- "\\([ \t*&]+\\sw+\\>\\)*")
- ;; Fontify each declaration item.
- '(font-lock-match-c++-style-declaration-item-and-skip-to-next
- ;; Start with point after all type specifiers.
- (goto-char (or (match-beginning 13) (match-end 1)))
- ;; Finish with point after first type specifier.
- (goto-char (match-end 1))
- ;; Fontify as a variable or function name.
- (1 (cond ((match-beginning 2) font-lock-type-face)
- ((match-beginning 4) font-lock-function-name-face)
- (t font-lock-variable-name-face)))
- (3 (if (match-beginning 4)
- font-lock-function-name-face
- font-lock-variable-name-face) nil t)))
- ;;
- ;; Fontify structures, or typedef names, plus their items.
- '("\\(}\\)[ \t*]*\\sw"
- (font-lock-match-c++-style-declaration-item-and-skip-to-next
- (goto-char (match-end 1)) nil
- (1 (if (match-beginning 4)
- font-lock-function-name-face
- font-lock-variable-name-face))))
- ;;
- ;; Fontify anything at beginning of line as a declaration or definition.
- '("^\\(\\sw+\\)\\>\\([ \t*]+\\sw+\\>\\)*"
- (1 font-lock-type-face)
- (font-lock-match-c++-style-declaration-item-and-skip-to-next
- (goto-char (or (match-beginning 2) (match-end 1))) nil
- (1 (cond ((match-beginning 2) font-lock-type-face)
- ((match-beginning 4) font-lock-function-name-face)
- (t font-lock-variable-name-face)))
- (3 (if (match-beginning 4)
- font-lock-function-name-face
- font-lock-variable-name-face) nil t)))
- )))
- )
-
- (defvar c-font-lock-keywords c-font-lock-keywords-1
- "Default expressions to highlight in C mode.")
-
- (defvar c++-font-lock-keywords c++-font-lock-keywords-1
- "Default expressions to highlight in C++ mode.")
-
-
- (defvar tex-font-lock-keywords
- ; ;; Regexps updated with help from Ulrik Dickow <dickow@nbi.dk>.
- ; '(("\\\\\\(begin\\|end\\|newcommand\\){\\([a-zA-Z0-9\\*]+\\)}"
- ; 2 font-lock-function-name-face)
- ; ("\\\\\\(cite\\|label\\|pageref\\|ref\\){\\([^} \t\n]+\\)}"
- ; 2 font-lock-reference-face)
- ; ;; It seems a bit dubious to use `bold' and `italic' faces since we might
- ; ;; not be able to display those fonts.
- ; ("{\\\\bf\\([^}]+\\)}" 1 'bold keep)
- ; ("{\\\\\\(em\\|it\\|sl\\)\\([^}]+\\)}" 2 'italic keep)
- ; ("\\\\\\([a-zA-Z@]+\\|.\\)" . font-lock-keyword-face)
- ; ("^[ \t\n]*\\\\def[\\\\@]\\(\\w+\\)" 1 font-lock-function-name-face keep))
- ;; Rewritten and extended for LaTeX2e by Ulrik Dickow <dickow@nbi.dk>.
- '(("\\\\\\(begin\\|end\\|newcommand\\){\\([a-zA-Z0-9\\*]+\\)}"
- 2 font-lock-function-name-face)
- ("\\\\\\(cite\\|label\\|pageref\\|ref\\){\\([^} \t\n]+\\)}"
- 2 font-lock-reference-face)
- ("^[ \t]*\\\\def\\\\\\(\\(\\w\\|@\\)+\\)" 1 font-lock-function-name-face)
- "\\\\\\([a-zA-Z@]+\\|.\\)"
- ;; It seems a bit dubious to use `bold' and `italic' faces since we might
- ;; not be able to display those fonts.
- ;; LaTeX2e: \emph{This is emphasized}.
- ("\\\\emph{\\([^}]+\\)}" 1 'italic keep)
- ;; LaTeX2e: \textbf{This is bold}, \textit{...}, \textsl{...}
- ("\\\\text\\(\\(bf\\)\\|it\\|sl\\){\\([^}]+\\)}"
- 3 (if (match-beginning 2) 'bold 'italic) keep)
- ;; Old-style bf/em/it/sl. Stop at `\\' and un-escaped `&', for good tables.
- ("\\\\\\(\\(bf\\)\\|em\\|it\\|sl\\)\\>\\(\\([^}&\\]\\|\\\\[^\\]\\)+\\)"
- 3 (if (match-beginning 2) 'bold 'italic) keep))
- "Default expressions to highlight in TeX modes.")
-
- ;; Install ourselves:
-
- (unless (assq 'font-lock-mode minor-mode-alist)
- (setq minor-mode-alist (cons '(font-lock-mode " Font") minor-mode-alist)))
-
- ;; Provide ourselves:
-
- (provide 'font-lock)
-
- ;;; font-lock.el ends here
-