-;; Electric Font Lock Mode
-;; Copyright (C) 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
+;;; font-lock.el --- Electric font lock mode
-;; Author: jwz, then rms and sm <simon@gnu.ai.mit.edu>
+;; 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
;; 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, 675 Mass Ave, Cambridge, MA 02139, USA.
-
+;; 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:
;; 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.
-;; When this minor mode is on, the faces of the current line are
-;; updated with every insertion or deletion.
+;; 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:
+;; To turn Font Lock mode on automatically, add this to your ~/.emacs file:
;;
;; (add-hook 'emacs-lisp-mode-hook 'turn-on-font-lock)
;;
-;; On a Sparc2, `font-lock-fontify-buffer' takes about 10 seconds for a 120k
-;; file of C code using the default configuration, and about 25 seconds using
-;; the more extensive configuration, though times also depend on file contents.
-;; You can speed this up substantially by removing some of the patterns that
-;; are highlighted by default. Fontifying Lisp code is significantly faster,
-;; because Lisp has a more regular syntax than C, so the expressions don't have
-;; to be as hairy.
+;; 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'.
+
;; 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':
;; 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.
+
+;; 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.
\f
-;;; Code:
+;; User variables.
-(defvar font-lock-comment-face 'font-lock-comment-face
+(defvar font-lock-verbose t
+ "*If non-nil, means show status messages when fontifying.")
+
+;;;###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 . 2) (c-mode . t) (t . 1))
+means use level 2 decoration for buffers in `c++-mode', the maximum decoration
+available 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++-mode' or `c-mode', one
+megabyte for buffers in `rmail-mode', and size is irrelevant otherwise.")
+\f
+;; 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
+(defvar font-lock-string-face 'font-lock-string-face
"Face to use for strings.")
-(defvar font-lock-function-name-face 'font-lock-function-name-face
+(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
+(defvar font-lock-variable-name-face 'font-lock-variable-name-face
"Face to use for variable names.")
-(defvar font-lock-keyword-face 'font-lock-keyword-face
- "Face to use for keywords.")
+(defvar font-lock-type-face 'font-lock-type-face
+ "Face to use for type names.")
-(defvar font-lock-type-face 'font-lock-type-face
- "Face to use for data types.")
+(defvar font-lock-reference-face 'font-lock-reference-face
+ "Face to use for reference names.")
-(defvar font-lock-reference-face 'font-lock-reference-face
- "Face to use for references.")
+(defvar font-lock-keywords nil
+ "*A list of the keywords to highlight.
+Each element should be of the form:
-(defvar font-lock-no-comments nil
- "Non-nil means Font Lock should not fontify comments or strings.")
+ MATCHER
+ (MATCHER . MATCH)
+ (MATCHER . FACENAME)
+ (MATCHER . HIGHLIGHT)
+ (MATCHER HIGHLIGHT ...)
+ (eval . FORM)
-(make-variable-buffer-local 'font-lock-keywords)
-(defvar font-lock-keywords nil
- "*The keywords to highlight.
-Elements should be of the 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.
- REGEXP
- (REGEXP . MATCH)
- (REGEXP . FACENAME)
- (REGEXP . HIGHLIGHT)
- (REGEXP HIGHLIGHT ...)
+MATCH-HIGHLIGHT should be of the form:
-where HIGHLIGHT should be of the form (MATCH FACENAME OVERRIDE LAXMATCH).
-REGEXP is the regexp to search for, MATCH is the subexpression of REGEXP 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'.
+ (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 overriden. If `keep', only parts not already fontified are highlighted.
-If LAXMATCH is non-nil, no error is signalled if there is no MATCH in REGEXP.
+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 careful composing regexps for this list;
+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 look like the `cdr' of an item in `font-lock-defaults-alist'.")
+The value should be like the `cdr' of an item in `font-lock-defaults-alist'.")
(defvar font-lock-defaults-alist
- '((bibtex-mode . (tex-font-lock-keywords))
- (c++-c-mode . (c-font-lock-keywords nil nil ((?_ . "w"))))
- (c++-mode . (c++-font-lock-keywords nil nil ((?_ . "w"))))
- (c-mode . (c-font-lock-keywords nil nil ((?_ . "w"))))
- (emacs-lisp-mode . (lisp-font-lock-keywords
- nil nil ((?: . "w") (?- . "w") (?* . "w"))))
- (latex-mode . (tex-font-lock-keywords))
- (lisp-mode . (lisp-font-lock-keywords
- nil nil ((?: . "w") (?- . "w") (?* . "w"))))
- (plain-tex-mode . (tex-font-lock-keywords))
- (scheme-mode . (lisp-font-lock-keywords
- nil nil ((?: . "w") (?- . "w") (?* . "w"))))
- (slitex-mode . (tex-font-lock-keywords))
- (tex-mode . (tex-font-lock-keywords)))
- "*Alist of default major mode and Font Lock defaults.
+ (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-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-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") (?- . "w") (?* . "w") (?+ . "w") (?. . "w") (?< . "w")
+ (?> . "w") (?= . "w") (?! . "w") (?? . "w") (?$ . "w") (?% . "w")
+ (?_ . "w") (?& . "w") (?~ . "w") (?^ . "w") (?/ . "w"))
+ beginning-of-defun (font-lock-mark-block-function . mark-defun)))
+ (scheme-mode-defaults
+ '(scheme-font-lock-keywords nil t
+ ((?: . "w") (?- . "w") (?* . "w") (?+ . "w") (?. . "w") (?< . "w")
+ (?> . "w") (?= . "w") (?! . "w") (?? . "w") (?$ . "w") (?% . "w")
+ (?_ . "w") (?& . "w") (?~ . "w") (?^ . "w") (?/ . "w"))
+ beginning-of-defun (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-mark-block-function . mark-paragraph)))
+ )
+ (list
+ (cons 'bibtex-mode tex-mode-defaults)
+ (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 . (FONT-LOCK-KEYWORDS KEYWORDS-ONLY CASE-FOLD FONT-LOCK-SYNTAX))
-where both MAJOR-MODE and FONT-LOCK-KEYWORDS are 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.
-FONT-LOCK-SYNTAX should be a list of cons pairs of the form (CHAR . STRING), it
-is used to set the local Font Lock syntax table for keyword fontification.")
-
-(defvar font-lock-maximum-size (* 100 1024)
- "*If non-nil, the maximum size for buffers.
-Only buffers less than this can be fontified when Font Lock mode is turned on.
-If nil, means size is irrelevant.")
+
+ (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 . 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' and
+`font-lock-inhibit-thing-lock'.")
+
+(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.")
+ "*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.")
+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-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.
+(put 'font-lock-fontified 'permanent-local t)
-(defvar font-lock-verbose t
- "*Non-nil means `font-lock-fontify-buffer' should print status messages.")
+;;;###autoload
+(defvar font-lock-mode-hook nil
+ "Function or functions to run on entry to Font Lock mode.")
+\f
+;; User commands.
;;;###autoload
-(defvar font-lock-maximum-decoration nil
- "Non-nil means use the maximum decoration for fontifying.")
+(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, or in buffers whose major
+mode is one of `font-lock-global-modes'. For example, put in your ~/.emacs:
+
+ (global-font-lock-mode t)
+
+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.
+
+Where 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'.
+
+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]."
+ (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 ((maximum-size (font-lock-value-in-major-mode font-lock-maximum-size))
+ (on-p (and (not noninteractive)
+ (not (eq (aref (buffer-name) 0) ?\ ))
+ (if arg
+ (> (prefix-numeric-value arg) 0)
+ (not font-lock-mode)))))
+ (if (not on-p)
+ (remove-hook 'after-change-functions 'font-lock-after-change-function
+ t)
+ (make-local-hook 'after-change-functions)
+ (add-hook 'after-change-functions 'font-lock-after-change-function
+ nil t))
+ (set (make-local-variable 'font-lock-mode) on-p)
+ (cond (on-p
+ (font-lock-set-defaults)
+ ;; If buffer is reverted, must clean up the state.
+ (make-local-hook 'before-revert-hook)
+ (make-local-hook 'after-revert-hook)
+ (add-hook 'before-revert-hook 'font-lock-revert-setup nil t)
+ (add-hook 'after-revert-hook 'font-lock-revert-cleanup nil t)
+ (run-hooks 'font-lock-mode-hook)
+ (cond (font-lock-fontified
+ nil)
+ ((or (null maximum-size) (<= (buffer-size) maximum-size)
+ (not (eq font-lock-fontify-buffer-function
+ (default-value
+ 'font-lock-fontify-buffer-function))))
+ (font-lock-fontify-buffer))
+ (font-lock-verbose
+ (message "Fontifying %s... buffer too big." (buffer-name)))))
+ (font-lock-fontified
+ (font-lock-unfontify-buffer)
+ (remove-hook 'before-revert-hook 'font-lock-revert-setup t)
+ (remove-hook 'after-revert-hook 'font-lock-revert-cleanup t)
+ (font-lock-thing-lock-cleanup)
+ (font-lock-unset-defaults))
+ (t
+ (remove-hook 'before-revert-hook 'font-lock-revert-setup t)
+ (remove-hook 'after-revert-hook 'font-lock-revert-cleanup t)
+ (font-lock-thing-lock-cleanup)
+ (font-lock-unset-defaults)))
+ (force-mode-line-update)))
;;;###autoload
-(defvar font-lock-mode-hook nil
- "Function or functions to run on entry to Font Lock mode.")
+(defun turn-on-font-lock ()
+ "Turn on Font Lock mode conditionally.
+Turn on only if the buffer mode supports it and the terminal can display it."
+ (if (and window-system
+ (not font-lock-mode)
+ (or font-lock-defaults (assq major-mode font-lock-defaults-alist)))
+ (font-lock-mode t)))
+\f
+;; Code for 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, 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.
+
+;; In the latest of these discussions 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 variable `post-command-hook'.
+;; By the time the functions on `post-command-hook' are run, the new major mode
+;; is assumed to be in place.
+
+;; 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
+;; command that ran `kill-all-local-variables' has finished. 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. I don't know of any major
+;; modes that do not follow the convension (a), but I'm sure there are some
+;; obscure ones out there somewhere. Even if it works, it is still 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
+;; (space'n'speed), or have a special function such as `set-major-mode' (a
+;; `major-mode-hook' is simpler), but maybe someone can come up with another
+;; solution? --sm.
+
+(defvar font-lock-buffers nil) ; For remembering buffers.
+(defvar change-major-mode-hook nil) ; Make sure it's not void.
-(defvar font-lock-after-fontify-buffer-hook nil
- "Function or functions to run after `font-lock-fontify-buffer'.")
+;;;###autoload
+(defvar font-lock-global-modes t
+ "*Modes for which Font Lock mode is automatically 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, each element should be a major mode symbol name such as `c-mode'.
+Font Lock is automatically turned on if the buffer major mode supports it and
+is in this list. The sense of the list is negated if it begins with `not'.")
+
+;;;###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)
+ (memq 'font-lock-change-major-mode change-major-mode-hook))))
+ (if off-p
+ (remove-hook 'change-major-mode-hook 'font-lock-change-major-mode)
+ (add-hook 'change-major-mode-hook 'font-lock-change-major-mode)
+ (add-hook 'post-command-hook 'turn-on-font-lock-if-enabled)
+ (setq font-lock-buffers (buffer-list)))
+ (if message
+ (message "Global Font Lock mode is now %s." (if off-p "OFF" "ON")))
+ (not off-p)))
+
+(defun font-lock-change-major-mode ()
+ ;; 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
+ ;; current command has finished.
+ (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 one of `font-lock-global-modes'.
+ (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 (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))))
+
+;; End of Global Font Lock mode.
+\f
+;; 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 (and font-lock-verbose (> (buffer-size) 0))))
+ (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)
+\f
+;; 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 (if comment-start-skip
+ (concat "\\s\"\\|" comment-start-skip)
+ "\\s\""))
+ (comstart (if comment-start-skip
+ (concat "\\s<\\|" comment-start-skip)
+ "\\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 (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 (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)))))
+\f
+;;; 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))))
+\f
+;;; 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)))))
+\f
+;; Various functions.
+
+;; Turn off other related packages if they're on. I prefer a hook. --sm.
+;; These explicit calls are easier to understand
+;; because people know what they will do.
+;; A hook is a mystery because it might do anything whatever. --rms.
+(defun font-lock-thing-lock-cleanup ()
+ (cond ((and (boundp 'fast-lock-mode) fast-lock-mode)
+ (fast-lock-mode -1))
+ ((and (boundp 'lazy-lock-mode) lazy-lock-mode)
+ (lazy-lock-mode -1))))
+
+;; Do something special for these packages after fontifying; I prefer a hook.
+(defun font-lock-after-fontify-buffer ()
+ (cond ((and (boundp 'fast-lock-mode) fast-lock-mode)
+ (fast-lock-after-fontify-buffer))
+ ((and (boundp 'lazy-lock-mode) lazy-lock-mode)
+ (lazy-lock-after-fontify-buffer))))
+
+;; Do something special for these packages after unfontifying; I prefer a hook.
+(defun font-lock-after-unfontify-buffer ()
+ (cond ((and (boundp 'fast-lock-mode) fast-lock-mode)
+ (fast-lock-after-unfontify-buffer))
+ ((and (boundp 'lazy-lock-mode) lazy-lock-mode)
+ (lazy-lock-after-unfontify-buffer))))
+
+;; If the buffer is about to be reverted, it won't be fontified afterward.
+(defun font-lock-revert-setup ()
+ (setq font-lock-fontified nil))
+
+;; If the buffer has just been reverted, normally that turns off
+;; Font Lock mode. So turn the mode back on if necessary.
+(defalias 'font-lock-revert-cleanup
+ 'turn-on-font-lock)
+
+(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
+ (modify-syntax-entry (car (car slist)) (cdr (car slist))
+ font-lock-syntax-table)
+ (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)))))
\f
;; 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'.
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 ()
+(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.
"BackgroundMode"))
(params (frame-parameters)))
(cond (bg-resource (intern (downcase bg-resource)))
- ((or (string-equal "white"
- (downcase (cdr (assq 'foreground-color params))))
- (string-equal "black"
- (downcase (cdr (assq 'background-color params)))))
+ ((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")) 3))
'dark)
(t 'light)))))
(if (null font-lock-face-attributes)
grayshade greyshade))
(list
(list 'font-lock-comment-face
- (if light-bg "DimGray" "Gray80") nil t t nil)
+ nil (if light-bg "Gray80" "DimGray") t t nil)
(list 'font-lock-string-face
- (if light-bg "Gray50" "LightGray") nil nil t nil)
+ nil (if light-bg "Gray50" "LightGray") nil t nil)
(list 'font-lock-keyword-face
- (if light-bg "DimGray" "Gray90") nil t nil nil)
+ 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
- (if light-bg "DimGray" "Gray90") nil t t nil)
+ nil (if light-bg "Gray90" "DimGray") t t nil)
(list 'font-lock-type-face
- (if light-bg "DimGray" "Gray80") nil t nil t)
+ nil (if light-bg "Gray80" "DimGray") t nil t)
(list 'font-lock-reference-face
- (if light-bg "Gray50" "LightGray") nil t nil t)))
+ 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-variable-name-face "LightGoldenrod")
(font-lock-type-face "PaleGreen")
(font-lock-reference-face "Aquamarine")))))))
- (mapcar 'font-lock-make-face font-lock-face-attributes))
+ ;; 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.
(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-underline-p face (nth 5 face-attributes)))
(set face face)))
\f
-;; Fontification.
-
-;; These variables record, for each buffer, the parse state at a particular
-;; position, always the start of a line. Used to make font-lock-fontify-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-region (start end &optional loudly)
- "Put proper face on each string and comment between START and END."
- (save-excursion
- (save-restriction
- (widen)
- (goto-char start)
- (beginning-of-line)
- (if loudly (message "Fontifying %s... (syntactically...)" (buffer-name)))
- (let ((inhibit-read-only t) (buffer-undo-list t) (buffer-file-name)
- (modified (buffer-modified-p))
- (synstart (if comment-start-skip
- (concat "\\s\"\\|" comment-start-skip)
- "\\s\""))
- (comstart (if comment-start-skip
- (concat "\\s<\\|" comment-start-skip)
- "\\s<"))
- (startline (point))
- state prev prevstate)
- ;; Find the state at the line-beginning before START.
- (if (eq startline font-lock-cache-position)
- (setq state font-lock-cache-state)
- ;; Find outermost containing sexp.
- (beginning-of-defun)
- ;; Find the state at STARTLINE.
- (while (< (point) startline)
- (setq state (parse-partial-sexp (point) startline 0)))
- (setq font-lock-cache-state state
- font-lock-cache-position (point)))
- ;; Now find the state precisely at START.
- (setq state (parse-partial-sexp (point) start nil nil state))
- ;; 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 (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)
- (let ((beg (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))
- (and prev
- (remove-text-properties prev end '(face nil)))
- (and (buffer-modified-p)
- (not modified)
- (set-buffer-modified-p nil))))))
-
-(defun font-lock-unfontify-region (beg end)
- (let ((modified (buffer-modified-p))
- (buffer-undo-list t) (inhibit-read-only t) (buffer-file-name))
- (remove-text-properties beg end '(face nil))
- (set-buffer-modified-p modified)))
-
-;; Called when any modification is made to buffer text.
-(defun font-lock-after-change-function (beg end old-len)
- (save-excursion
- (save-match-data
- ;; Discard the cache info if text before it has changed.
- (and font-lock-cache-position
- (> font-lock-cache-position beg)
- (setq font-lock-cache-position nil))
- ;; Rescan between start of line from `beg' and start of line after `end'.
- (goto-char beg)
- (beginning-of-line)
- (setq beg (point))
- (goto-char end)
- (forward-line 1)
- (setq end (point))
- ;; First scan for strings and comments.
- ;; Must scan from line start in case of
- ;; inserting space into `intfoo () {}', and after widened.
- (if font-lock-no-comments
- (remove-text-properties beg end '(face nil))
- (font-lock-fontify-region beg end))
- ;; Now scan for keywords.
- (font-lock-hack-keywords beg end))))
-
-; ;; Now scan for keywords, but not if we are inside a comment now.
-; (or (and (not font-lock-no-comments)
-; (let ((state (parse-partial-sexp beg end nil nil
-; font-lock-cache-state)))
-; (or (nth 4 state) (nth 7 state))))
-; (font-lock-hack-keywords beg end))
-\f
-;;; Fontifying arbitrary patterns
-
-(defun font-lock-hack-keywords (start end &optional loudly)
- "Fontify according to `font-lock-keywords' between START and END."
- (let ((case-fold-search font-lock-keywords-case-fold-search)
- (keywords font-lock-keywords)
- (count 0)
- (inhibit-read-only t) (buffer-undo-list t) (buffer-file-name)
- (modified (buffer-modified-p))
- (old-syntax (syntax-table))
- (bufname (buffer-name)))
- (unwind-protect
- (let (keyword regexp match highlights hs h s e)
- (if loudly (message "Fontifying %s... (regexps...)" bufname))
- (if font-lock-syntax-table (set-syntax-table font-lock-syntax-table))
- (while keywords
- (setq keyword (car keywords) keywords (cdr keywords)
- regexp (if (stringp keyword) keyword (car keyword))
- highlights (cond ((stringp keyword)
- '((0 font-lock-keyword-face)))
- ((numberp (cdr keyword))
- (list (list (cdr keyword)
- 'font-lock-keyword-face)))
- ((symbolp (cdr keyword))
- (list (list 0 (cdr keyword))))
- ((nlistp (nth 1 keyword))
- (list (cdr keyword)))
- (t
- (cdr keyword))))
- (goto-char start)
- (while (re-search-forward regexp end t)
- (setq hs highlights)
- (while hs
- (setq h (car hs) match (nth 0 h)
- s (match-beginning match) e (match-end match)
- hs (cdr hs))
- (cond ((not s)
- ;; No match but we might not signal an error
- (or (nth 3 h)
- (error "No subexpression %d in expression %d"
- match (1+ count))))
- ((and (not (nth 2 h))
- (text-property-not-all s e 'face nil))
- ;; Can't override and already fontified
- nil)
- ((not (eq (nth 2 h) 'keep))
- ;; Can override but need not keep existing fontification
- (put-text-property s e 'face (eval (nth 1 h))))
- (t
- ;; Can override but must keep existing fontification
- ;; (Does anyone use this? sm.)
- (let ((p (text-property-any s e 'face nil)) n
- (face (eval (nth 1 h))))
- (while p
- (setq n (next-single-property-change p 'face nil e))
- (put-text-property p n 'face face)
- (setq p (text-property-any n e 'face nil))))))))
-;; the above form was:
-; (save-excursion
-; (goto-char s)
-; (while (< (point) e)
-; (let ((next (next-single-property-change (point) 'face
-; nil e)))
-; (if (or (null next) (> next e))
-; (setq next e))
-; (if (not (get-text-property (point) 'face))
-; (put-text-property (point) next 'face face))
-; (goto-char next))))
-
- (if loudly (message "Fontifying %s... (regexps...%s)" bufname
- (make-string (setq count (1+ count)) ?.)))))
- (set-syntax-table old-syntax))
- (and (buffer-modified-p)
- (not modified)
- (set-buffer-modified-p nil))))
-\f
-;; The user level functions
-
-(defvar font-lock-mode nil) ; for modeline
-
-(defvar font-lock-fontified nil) ; whether we have hacked this buffer
-(put 'font-lock-fontified 'permanent-local t)
-
-;;;###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)
-
-Or for any visited file with the following in your ~/.emacs:
-
- (add-hook 'find-file-hooks 'turn-on-font-lock)
-
-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'.
-
-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'.
-To fontify a buffer without turning on Font Lock mode, and regardless of buffer
-size, you can use \\[font-lock-fontify-buffer]."
- (interactive "P")
- (let ((on-p (if arg (> (prefix-numeric-value arg) 0) (not font-lock-mode))))
- (if (equal (buffer-name) " *Compiler Input*") ; hack for bytecomp...
- (setq on-p nil))
- (if (not on-p)
- (remove-hook 'after-change-functions 'font-lock-after-change-function)
- (make-local-variable 'after-change-functions)
- (add-hook 'after-change-functions 'font-lock-after-change-function))
- (set (make-local-variable 'font-lock-mode) on-p)
- (cond (on-p
- (font-lock-set-defaults)
- (make-local-variable 'before-revert-hook)
- (make-local-variable 'after-revert-hook)
- ;; If buffer is reverted, must clean up the state.
- (add-hook 'before-revert-hook 'font-lock-revert-setup)
- (add-hook 'after-revert-hook 'font-lock-revert-cleanup)
- (run-hooks 'font-lock-mode-hook)
- (cond (font-lock-fontified
- nil)
- ((or (null font-lock-maximum-size)
- (> font-lock-maximum-size (buffer-size)))
- (font-lock-fontify-buffer))
- (font-lock-verbose
- (message "Fontifying %s... buffer too big." (buffer-name)))))
- (font-lock-fontified
- (setq font-lock-fontified nil)
- (remove-hook 'before-revert-hook 'font-lock-revert-setup)
- (remove-hook 'after-revert-hook 'font-lock-revert-cleanup)
- (font-lock-unfontify-region (point-min) (point-max))
- (font-lock-thing-lock-cleanup))
- (t
- (font-lock-thing-lock-cleanup)))
- (force-mode-line-update)))
-
-;;;###autoload
-(defun turn-on-font-lock ()
- "Unconditionally turn on Font Lock mode."
- (font-lock-mode 1))
-
-;; Turn off other related packages if they're on.
-(defun font-lock-thing-lock-cleanup ()
- (cond ((and (boundp 'fast-lock-mode) fast-lock-mode)
- (fast-lock-mode -1))
- ((and (boundp 'lazy-lock-mode) lazy-lock-mode)
- (lazy-lock-mode -1))))
-
-;; If the buffer is about to be reverted, it won't be fontified.
-(defun font-lock-revert-setup ()
- (setq font-lock-fontified nil))
-
-;; If the buffer has just been reverted, we might not even be in font-lock
-;; mode anymore, and if we are, the buffer may or may not have already been
-;; refontified. Refontify here if it looks like we need to.
-(defun font-lock-revert-cleanup ()
- (and font-lock-mode
- (not font-lock-fontified)
- (font-lock-mode 1)))
-
-;;;###autoload
-(defun font-lock-fontify-buffer ()
- "Fontify the current buffer the way `font-lock-mode' would."
- (interactive)
- (let ((was-on font-lock-mode)
- (verbose (or font-lock-verbose (interactive-p)))
- (modified (buffer-modified-p)))
- (set (make-local-variable 'font-lock-fontified) nil)
- (if verbose (message "Fontifying %s..." (buffer-name)))
- ;; Turn it on to run hooks and get the right `font-lock-keywords' etc.
- (or was-on (font-lock-set-defaults))
- (condition-case nil
- (save-excursion
- (if font-lock-no-comments
- (font-lock-unfontify-region (point-min) (point-max))
- (font-lock-fontify-region (point-min) (point-max) verbose))
- (font-lock-hack-keywords (point-min) (point-max) verbose)
- (setq font-lock-fontified t))
- ;; We don't restore the old fontification, so it's best to unfontify.
- (quit (font-lock-unfontify-region (point-min) (point-max))))
- (if verbose (message "Fontifying %s... %s." (buffer-name)
- (if font-lock-fontified "done" "aborted")))
- (and (buffer-modified-p)
- (not modified)
- (set-buffer-modified-p nil))
- (run-hooks 'font-lock-after-fontify-buffer-hook)))
-\f
-;;; Various information shared by several modes.
+;;; 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
- ;; highlight defining forms. This doesn't work too nicely for
- ;; (defun (setf foo) ...) but it does work for (defvar foo) which
- ;; is more important.
- (list (concat "^(\\(def\\(const\\|ine-key\\(\\|-after\\)\\|var\\)\\)\\>"
- "\\s *\\([^ \t\n\)]+\\)?")
- '(1 font-lock-keyword-face) '(4 font-lock-variable-name-face nil t))
- (list (concat "^(\\(def[^ \t\n\)]+\\)\\>"
- "\\s *\\([^ \t\n\)]+\\)?")
- '(1 font-lock-keyword-face) '(2 font-lock-function-name-face nil t))
- ;;
- ;; this is highlights things like (def* (setf foo) (bar baz)), but may
- ;; be slower (I haven't really thought about it)
-; ("^(def[-a-z]+\\s +\\(\\s(\\S)*\\s)\\|\\S(\\S *\\)"
-; 1 font-lock-function-name-face)
+ ;; 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))
)
- "For consideration as a value of `lisp-font-lock-keywords'.
-This does fairly subdued highlighting.")
+ "Subdued level highlighting for Lisp modes.")
(defconst lisp-font-lock-keywords-2
(append lisp-font-lock-keywords-1
- (let ((word-char "[-+a-zA-Z0-9_:*]"))
- (list
- ;;
- ;; Control structures.
- ;; ELisp:
-; ("cond" "if" "while" "let\\*?" "prog[nv12*]?" "catch" "throw"
-; "save-restriction" "save-excursion"
-; "save-window-excursion" "save-match-data" "unwind-protect"
-; "condition-case" "track-mouse")
- (cons
- (concat
- "(\\("
- "c\\(atch\\|ond\\(\\|ition-case\\)\\)\\|if\\|let\\*?\\|prog[nv12*]?\\|"
- "save-\\(excursion\\|match-data\\|restriction\\|window-excursion\\)\\|"
- "t\\(hrow\\|rack-mouse\\)\\|unwind-protect\\|while"
- "\\)\\>") 1)
- ;; CLisp:
-; ("when" "unless" "do" "flet" "labels" "return" "return-from")
- '("(\\(do\\|flet\\|labels\\|return\\(\\|-from\\)\\|unless\\|when\\)\\>"
- . 1)
- ;;
- ;; Fontify CLisp keywords.
- (concat "\\<:" word-char "*\\>")
- ;;
- ;; Function names in emacs-lisp docstrings (in the syntax that
- ;; `substitute-command-keys' understands).
- '("\\\\\\\\\\[\\([^]\\\n]+\\)]" 1 font-lock-reference-face t)
- ;;
- ;; Words inside `' which tend to be symbol names.
- (list (concat "`\\(" word-char word-char "+\\)'")
- 1 'font-lock-reference-face t)
- ;;
- ;; & keywords as types
- '("\\&\\(optional\\|rest\\|whole\\)\\>" . font-lock-type-face)
- )))
- "For consideration as a value of `lisp-font-lock-keywords'.
-This does a lot more highlighting.")
-
-(defvar lisp-font-lock-keywords (if font-lock-maximum-decoration
- lisp-font-lock-keywords-2
- lisp-font-lock-keywords-1)
- "Additional expressions to highlight in Lisp modes.")
+ (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
- "For consideration as a value of `c-font-lock-keywords'.
-This does fairly subdued highlighting.")
+ "Subdued level highlighting for C modes.")
(defconst c-font-lock-keywords-2 nil
- "For consideration as a value of `c-font-lock-keywords'.
-This does a lot more highlighting.")
+ "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
- "For consideration as a value of `c++-font-lock-keywords'.
-This does fairly subdued highlighting.")
+ "Subdued level highlighting for C++ modes.")
(defconst c++-font-lock-keywords-2 nil
- "For consideration as a value of `c++-font-lock-keywords'.
-This does a lot more highlighting.")
+ "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 "," or ";".
+ (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 0)))
+ (error t)))))
(let ((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\\|operator\\|"
+ "else\\|for\\|if\\|new\\|"
"p\\(r\\(ivate\\|otected\\)\\|ublic\\)\\|return\\|"
"s\\(izeof\\|witch\\)\\|t\\(h\\(is\\|row\\)\\|ry\\)\\|while"))
(c++-type-types
"s\\(hort\\|igned\\|t\\(atic\\|ruct\\)\\)\\|"
"t\\(emplate\\|ypedef\\)\\|un\\(ion\\|signed\\)\\|"
"v\\(irtual\\|o\\(id\\|latile\\)\\)")) ; 11 ()s deep.
- (ctoken "[a-zA-Z0-9_:~]+"))
+ )
(setq c-font-lock-keywords-1
(list
;;
- ;; Fontify filenames in #include <...> preprocessor directives.
+ ;; 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+\\)(\\)" 2 font-lock-function-name-face)
+ '("^#[ \t]*define[ \t]+\\(\\sw+\\)(" 1 font-lock-function-name-face)
+ ;;
+ ;; Fontify symbol names in #if ... defined preprocessor directives.
+ '("^#[ \t]*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]*[a-z]+\\)\\>[ \t]*\\(\\sw+\\)?"
+ '("^#[ \t]*\\(\\sw+\\)\\>[ \t]*\\(\\sw+\\)?"
(1 font-lock-reference-face) (2 font-lock-variable-name-face nil t))
- ;;
- ;; Fontify function name definitions (without type on line).
- (list (concat "^\\(" ctoken "\\)[ \t]*(") 1 'font-lock-function-name-face)
))
(setq c-font-lock-keywords-2
(append c-font-lock-keywords-1
(list
;;
- ;; Fontify all storage classes and type specifiers (before declarations).
- (cons (concat "\\<\\(" c-type-types "\\)\\>") 'font-lock-type-face)
+ ;; Simple regexps for speed.
;;
- ;; Fontify variable/structure name declarations and definitions, or
- ;; function name declarations (plus definitions with type on same line).
- (list (concat "\\<\\(" c-type-types "\\)[ \t*]+"
- "\\(" ctoken "[ \t*]+\\)*"
- "\\(" ctoken "\\)[ \t]*\\((\\)?")
- 9
- '(if (match-beginning 10)
- font-lock-function-name-face
- font-lock-variable-name-face))
- ;;
- ;; Fontify function/variable name declarations at the start of the line.
- ;; (Not everyone follows the GNU convention of function name at the start.)
- (list (concat "^" ctoken "[ \t*]+"
- "\\(" ctoken "[ \t*]+\\)*"
- "\\(" ctoken "\\)[ \t]*\\((\\)?")
- 2
- '(if (match-beginning 3)
- font-lock-function-name-face
- font-lock-variable-name-face))
- ;;
- ;; Fontify variable names declared with structures, or typedef names.
- '("}[ \t*]*\\(\\sw+\\)[ \t]*[;,[]" 1 font-lock-variable-name-face)
+ ;; Fontify all type specifiers.
+ (cons (concat "\\<\\(" c-type-types "\\)\\>") 'font-lock-type-face)
;;
;; Fontify all builtin keywords (except case, default and goto; see below).
- (concat "\\<\\(" c-keywords "\\)\\>")
+ (cons (concat "\\<\\(" c-keywords "\\)\\>") 'font-lock-keyword-face)
;;
- ;; Fontify case/goto keywords and targets, and goto tags (incl "default:").
- '("\\<\\(case\\|goto\\)\\>[ \t]*\\([^ \t\n:;]+\\)?"
+ ;; 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-1 c-font-lock-keywords-1)
+ (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 (if (match-beginning 2) font-lock-function-name-face) nil t))
+ )))
+
(setq c++-font-lock-keywords-2
(append c++-font-lock-keywords-1
(list
- ;; We don't just add to the C keywords for subtle differences and speed.
- ;; See the above comments for `c-font-lock-keywords-2'.
+ ;;
+ ;; The list `c-font-lock-keywords-2' for C++ plus operator overloading.
(cons (concat "\\<\\(" c++-type-types "\\)\\>") 'font-lock-type-face)
- (list (concat "\\<\\(" c++-type-types "\\)[ \t*&]+"
- "\\(" ctoken "[ \t*&]+\\)*"
- "\\(" ctoken "\\)[ \t]*\\((\\)?")
- 14
- '(if (match-beginning 15)
- font-lock-function-name-face
- font-lock-variable-name-face))
- (list (concat "^" ctoken "[ \t*]+"
- "\\(" ctoken "[ \t*]+\\)*"
- "\\(" ctoken "\\)[ \t]*\\((\\)?")
- 2
- '(if (match-beginning 3)
- font-lock-function-name-face
- font-lock-variable-name-face))
- '("}[ \t*]*\\(\\sw+\\)[ \t]*[;,[]" 1 font-lock-variable-name-face)
- (concat "\\<\\(" c++-keywords "\\)\\>")
- '("\\<\\(case\\|goto\\)\\>[ \t]*\\([^ \t\n:;]+\\)?"
+ ;;
+ ;; 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))))
- )
+ '("^[ \t]*\\(\\sw+\\)[ \t]*:[^:]" 1 font-lock-reference-face)
+ ;;
+ ;; Fontify other builtin keywords.
+ (cons (concat "\\<\\(" c++-keywords "\\)\\>") 'font-lock-keyword-face)
+ )))
-(defvar c-font-lock-keywords (if font-lock-maximum-decoration
- c-font-lock-keywords-2
- c-font-lock-keywords-1)
- "Additional expressions to highlight in C mode.")
+ (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 (if font-lock-maximum-decoration
- c++-font-lock-keywords-2
- c++-font-lock-keywords-1)
- "Additional 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
- (list
- '("\\(\\\\\\([a-zA-Z@]+\\|.\\)\\)" 1 font-lock-keyword-face t)
- '("{\\\\em\\([^}]+\\)}" 1 font-lock-comment-face t)
- '("{\\\\bf\\([^}]+\\)}" 1 font-lock-keyword-face t)
- '("^[ \t\n]*\\\\def[\\\\@]\\(\\w+\\)" 1 font-lock-function-name-face t)
- '("\\\\\\(begin\\|end\\){\\([a-zA-Z0-9\\*]+\\)}"
- 2 font-lock-function-name-face t)
- '("[^\\\\]\\$\\([^$]*\\)\\$" 1 font-lock-string-face t)
-; '("\\$\\([^$]*\\)\\$" 1 font-lock-string-face t)
- )
- "Additional expressions to highlight in TeX mode.")
-
-;; There is no html-mode.el shipped with Emacs; its `font-lock-defaults' entry
-;; could be: (html-font-lock-keywords nil t)
-;(defconst html-font-lock-keywords
-; '(("<!--[^>]*>" 0 font-lock-comment-face t) ; Comment.
-; ("</?\\sw+" . font-lock-type-face) ; Normal tag start.
-; (">" . font-lock-type-face) ; Normal tag end.
-; ("<\\(/?\\(a\\|form\\|img\\|input\\)\\)\\>" ; Special tag name.
-; 1 font-lock-function-name-face t)
-; ("\\<\\(\\sw+\\)[>=]" 1 font-lock-keyword-face)) ; Tag attribute.
-; "Additional expressions to highlight in HTML mode.")
+(defvar c++-font-lock-keywords c++-font-lock-keywords-1
+ "Default expressions to highlight in C++ mode.")
-(defun font-lock-set-defaults ()
- "Set fontification defaults appropriately for this mode.
-Sets `font-lock-keywords', `font-lock-no-comments', `font-lock-syntax-table'
-and `font-lock-keywords-case-fold-search' using `font-lock-defaults-alist'."
- (or font-lock-keywords ; if not already set.
- (let ((defaults (or font-lock-defaults
- (cdr (assq major-mode font-lock-defaults-alist)))))
- ;; Keywords?
- (setq font-lock-keywords (eval (nth 0 defaults)))
- ;; Syntactic?
- (if (nth 1 defaults)
- (set (make-local-variable 'font-lock-no-comments) t))
- ;; Case fold?
- (if (nth 2 defaults)
- (set (make-local-variable 'font-lock-keywords-case-fold-search) t))
- ;; Syntax table?
- (if (nth 3 defaults)
- (let ((slist (nth 3 defaults)))
- (make-local-variable 'font-lock-syntax-table)
- (setq font-lock-syntax-table (copy-syntax-table (syntax-table)))
- (while slist
- (modify-syntax-entry (car (car slist)) (cdr (car slist))
- font-lock-syntax-table)
- (setq slist (cdr slist))))))))
+(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.")
+\f
;; Install ourselves:
-(if purify-flag
- (add-hook 'after-init-hook 'font-lock-make-faces)
- (font-lock-make-faces))
-
(or (assq 'font-lock-mode minor-mode-alist)
(setq minor-mode-alist (cons '(font-lock-mode " Font") minor-mode-alist)))