;; Electric Font Lock Mode
;; Copyright (C) 1992, 1993, 1994 Free Software Foundation, Inc.
-;; Author: jwz, then rms
+;; Author: jwz, then rms and sm (simon.marshall@mail.esrin.esa.it)
;; Maintainer: FSF
;; Keywords: languages, faces
;;
;; Comments will be displayed in `font-lock-comment-face'.
;; Strings will be displayed in `font-lock-string-face'.
-;; Doc strings will be displayed in `font-lock-doc-string-face'.
-;; Function and variable names (in their defining forms) will be
-;; displayed in `font-lock-function-name-face'.
-;; Reserved words will be displayed in `font-lock-keyword-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 fonts of the current line are
;;
;; To turn this on automatically, add this to your .emacs file:
;;
-;; (setq emacs-lisp-mode-hook '(lambda () (font-lock-mode 1)))
+;; (setq emacs-lisp-mode-hook 'turn-on-font-lock)
;;
-;; On a Sparc2, the initial fontification takes about 12 seconds for a 120k
-;; file of C code, using the default configuration. 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.
-
+;; On a Sparc2, the initial fontification 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.
+;;
+;; 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.
+\f
;;; Code:
-(defvar font-lock-comment-face
- 'italic
- "Face to use for comments.")
+(or window-system (error "Can't fontify on an ASCII terminal"))
-(defvar font-lock-doc-string-face
- 'italic
- "Face to use for documentation strings.")
+(defvar font-lock-comment-face 'font-lock-comment-face
+ "Face to use for comments.")
-(defvar font-lock-string-face
- 'underline
- "Face to use for string constants.")
+(defvar font-lock-string-face 'font-lock-string-face
+ "Face to use for strings.")
-(defvar font-lock-function-name-face
- 'bold-italic
+(defvar font-lock-function-name-face 'font-lock-function-name-face
"Face to use for function names.")
-(defvar font-lock-keyword-face
- 'bold
+(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
- 'italic
+(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 references.")
+
(defvar font-lock-no-comments nil
"Non-nil means Font-Lock shouldn't check for comments or strings.")
(make-variable-buffer-local 'font-lock-keywords)
(defvar font-lock-keywords nil
"*The keywords to highlight.
-If this is a list, then elements may be of the forms:
-
- \"string\" ; A regexp to highlight in the
- ; `font-lock-keyword-face'.
- (\"string\" . N) ; Highlight subexpression N of the regexp.
- (\"string\" . face-name) ; Use the named face
- (\"string\" N face-name) ; Both of the above
- (\"string\" N face-name t) ; This allows highlighting to override
- ; already-highlighted regions.
- (\"string\" N face-name keep) ; This allows highlighting to occur
- ; even if some parts of what STRING matches
- ; are already highlighted--but does not alter
- ; the existing highlighting of those parts.
-
-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; the wrong pattern can dramatically
-slow things down!")
+Elements should be of the form:
+
+ REGEXP
+ (REGEXP . MATCH)
+ (REGEXP . FACENAME)
+ (REGEXP . HIGHLIGHT)
+ (REGEXP HIGHLIGHT ...)
+
+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'.
+
+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.
+
+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;
+the wrong pattern can dramatically slow things down!")
(defvar font-lock-keywords-case-fold-search nil
"*Non-nil means the patterns in `font-lock-keywords' are case-insensitive.")
;;;###autoload
(defvar font-lock-mode-hook nil
"Function or functions to run on entry to Font Lock mode.")
+\f
+;; Colour etc. support.
+
+(defvar 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)))
+ "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' file, or set the resource `Emacs.displayType'
+in your `~/.Xdefaults' file.
+See also `font-lock-background-mode' and `font-lock-face-attributes'.")
+
+(defvar font-lock-background-mode
+ (let ((bg-resource (x-get-resource ".backgroundMode" "BackgroundMode"))
+ (params (frame-parameters)))
+ (cond (bg-resource (intern (downcase bg-resource)))
+ ((or (string-equal (cdr (assq 'foreground-color params)) "white")
+ (string-equal (cdr (assq 'background-color params)) "black"))
+ 'dark)
+ (t 'light)))
+ "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' file or set the resource `Emacs.backgroundMode'
+in your `~/.Xdefaults' file.
+See also `font-lock-display-type' and `font-lock-face-attributes'.")
+
+(defvar 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
+ (if light-bg "DimGray" "Gray80") nil t t nil)
+ (list 'font-lock-string-face
+ (if light-bg "Gray50" "LightGray") nil nil t nil)
+ (list 'font-lock-keyword-face
+ (if light-bg "DimGray" "Gray90") 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)
+ (list 'font-lock-variable-name-face
+ (if light-bg "DimGray" "Gray90") nil t t nil)
+ (list 'font-lock-type-face
+ (if light-bg "DimGray" "Gray80") nil 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")))))
+ "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-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)
+ ;; 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)))
+\f
+;; Fontification.
-;;; These variables record, for each buffer,
-;;; the parse state at a particular position, always the start of a line.
-;;; This is used to make font-lock-fontify-region faster.
+;; 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)
+(defun font-lock-fontify-region (start end &optional loudly)
"Put proper face on each string and comment between START and END."
(save-excursion
- (goto-char start)
- (beginning-of-line)
- (setq end (min end (point-max)))
- (let ((buffer-read-only nil)
- state startline prev prevstate
- (modified (buffer-modified-p)))
- ;; Find the state at the line-beginning before START.
- (setq startline (point))
- (if (eq (point) 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)))
- (while (and (re-search-forward (if comment-end
- (concat "\\s>\\|"
- (regexp-quote comment-end))
- "\\s>")
- end 'move)
- (nth 3 (parse-partial-sexp beg (point)
- nil nil state))))
- (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 (if comment-start-skip
- (concat "\\s\"\\|" comment-start-skip)
- "\\s\"")
- end t)
- ;; Clear out the fonts of what we skip over.
- (progn (remove-text-properties prev (point) '(face nil)) t)
- ;; 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)
+ (save-restriction
+ (widen)
+ (goto-char start)
+ (beginning-of-line)
+ (if loudly (message "Fontifying %s... (syntactically...)" (buffer-name)))
+ (let ((buffer-read-only nil)
+ (modified (buffer-modified-p))
+ (cstart (if comment-start-skip
+ (concat "\\s\"\\|" comment-start-skip)
+ "\\s\""))
+ (cend (if comment-end
+ (concat "\\s>\\|" (regexp-quote comment-end))
+ "\\s>"))
+ (startline (point))
+ state prev prevstate)
+ ;; Find the state at the line-beginning before START.
+ (if (eq (point) 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)))
+ (while (and (re-search-forward cend end 'move)
+ (nth 3 (parse-partial-sexp beg (point)
+ nil nil state))))
+ (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 cstart 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)))
- (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)))))
+ (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))))))
;; This code used to be used to show a string on reaching the end of it.
;; It is probably not needed due to later changes to handle strings
(defun font-lock-after-change-function (beg end old-len)
(save-excursion
(save-match-data
- (goto-char beg)
;; 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 till end of line. yes!
- (goto-char end)
- (end-of-line)
- (setq end (point))
+ ;; 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 () {}'.
+ ;; inserting space into `intfoo () {}', and after widened.
(if font-lock-no-comments
- (remove-text-properties beg (min (1+ end) (point-max)) '(face nil))
- (font-lock-fontify-region beg (min (1+ end) (point-max))))
+ (remove-text-properties beg end '(face nil))
+ (font-lock-fontify-region beg end))
;; Now scan for keywords.
(font-lock-hack-keywords beg end))))
\f
;;; Fontifying arbitrary patterns
-(defsubst font-lock-any-properties-p (start end)
- (or (get-text-property start 'face)
- (let ((next (next-single-property-change start 'face)))
- (and next (< next end)))))
-
(defun font-lock-hack-keywords (start end &optional loudly)
- (goto-char start)
+ "Fontify according to `font-lock-keywords' between START and END."
(let ((case-fold-search font-lock-keywords-case-fold-search)
- (rest font-lock-keywords)
+ (keywords font-lock-keywords)
(count 0)
(buffer-read-only nil)
(modified (buffer-modified-p))
- first str match face s e allow-overlap-p
- (old-syntax (syntax-table)))
+ (old-syntax (syntax-table))
+ (bufname (buffer-name)))
(unwind-protect
- (progn
- (if font-lock-syntax-table
- (set-syntax-table font-lock-syntax-table))
- (while rest
- (setq first (car rest) rest (cdr rest))
+ (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)
- (cond ((consp first)
- (setq str (car first))
- (cond ((consp (cdr first))
- (setq match (nth 1 first)
- face (eval (nth 2 first))
- allow-overlap-p (nth 3 first)))
- ((symbolp (cdr first))
- (setq match 0 allow-overlap-p nil
- face (eval (cdr first))))
- (t
- (setq match (cdr first)
- allow-overlap-p nil
- face font-lock-keyword-face))))
- (t
- (setq str first match 0 allow-overlap-p nil
- face font-lock-keyword-face)))
- ;(message "regexp: %s" str)
- (while (re-search-forward str end t)
- (setq s (match-beginning match)
- e (match-end match))
- (or s (error "expression did not match subexpression %d" match))
- ;; don't fontify this keyword if we're already in some other context.
- (or (if allow-overlap-p nil (font-lock-any-properties-p s e))
- (if (not (memq allow-overlap-p '(t nil)))
- (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))))
- (put-text-property s e 'face face))))
- (if loudly (message "Fontifying %s... (regexps...%s)"
- (buffer-name)
+ (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)
;; The user level functions
(defvar font-lock-mode nil) ; for modeline
-(or (assq 'font-lock-mode minor-mode-alist)
- (setq minor-mode-alist
- (append minor-mode-alist
- '((font-lock-mode " Font")))))
(defvar font-lock-fontified nil) ; whether we have hacked this buffer
(put 'font-lock-fontified 'permanent-local t)
When Font Lock mode is enabled, text is fontified as you type it:
- - comments are displayed in `font-lock-comment-face';
- (That is a variable whose value should be a face name.)
- - strings are displayed in `font-lock-string-face';
- - documentation strings are displayed in `font-lock-doc-string-face';
- - function and variable names in their defining forms are displayed
- in `font-lock-function-name-face';
- - and certain other expressions are displayed in other faces
- according to the value of the variable `font-lock-keywords'.
+ - 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.
To fontify a buffer without having newly typed text become fontified, you
can use \\[font-lock-fontify-buffer]."
(interactive "P")
- (let ((on-p (if (null arg)
- (not font-lock-mode)
- (> (prefix-numeric-value arg) 0))))
+ (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))
- (make-local-variable 'after-change-functions)
- (if on-p
- (or (memq 'font-lock-after-change-function after-change-functions)
- (setq after-change-functions (cons 'font-lock-after-change-function
- after-change-functions)))
- (setq after-change-functions
- (delq 'font-lock-after-change-function
- (copy-sequence after-change-functions))))
+ (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)
- (make-local-variable 'font-lock-no-comments)
(cond (on-p
(font-lock-set-defaults)
(make-local-variable 'before-revert-hook)
(font-lock-unfontify-region (point-min) (point-max))))
(force-mode-line-update)))
+;;;###autoload
+(defun turn-on-font-lock ()
+ "Unconditionally turn on Font Lock mode."
+ (font-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))
(not font-lock-fontified)
(font-lock-mode 1)))
+;;;###autoload
(defun font-lock-fontify-buffer ()
- "Fontify the current buffer the way `font-lock-mode' would:
-
- - comments are displayed in `font-lock-comment-face';
- - strings are displayed in `font-lock-string-face';
- - documentation strings are displayed in `font-lock-doc-string-face';
- - function and variable names in their defining forms are displayed
- in `font-lock-function-name-face';
- - and certain other expressions are displayed in other faces
- according to the value of the variable `font-lock-keywords'.
-
-This can take a while for large buffers."
+ "Fontify the current buffer the way `font-lock-mode' would."
(interactive)
(let ((was-on font-lock-mode)
- (font-lock-verbose (or font-lock-verbose (interactive-p))))
- (if font-lock-verbose (message "Fontifying %s..." (buffer-name)))
+ (verbose (or font-lock-verbose (interactive-p)))
+ (modified (buffer-modified-p)))
+ (make-local-variable 'font-lock-fontified)
+ (if verbose (message "Fontifying %s..." (buffer-name)))
;; Turn it on to run hooks and get the right font-lock-keywords.
(or was-on (font-lock-set-defaults))
- (font-lock-unfontify-region (point-min) (point-max))
- (if (and font-lock-verbose (not font-lock-no-comments))
- (message "Fontifying %s... (syntactically...)" (buffer-name)))
- (save-excursion
- (or font-lock-no-comments
- (font-lock-fontify-region (point-min) (point-max)))
- (if font-lock-verbose (message "Fontifying %s... (regexps...)"
- (buffer-name)))
- (font-lock-hack-keywords (point-min) (point-max) font-lock-verbose))
- (set (make-local-variable 'font-lock-fontified) t)
- (if font-lock-verbose (message "Fontifying %s... done." (buffer-name)))
- ))
+ (condition-case nil
+ (save-excursion
+ (font-lock-unfontify-region (point-min) (point-max))
+ (if (not font-lock-no-comments)
+ (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))
+ (setq font-lock-fontified nil)))
+ (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))))
\f
-;;; Various mode-specific information.
+;;; Various 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.
- ("^(def[-a-z]+\\s +\\([^ \t\n\)]+\\)" 1 font-lock-function-name-face)
- ;;
- ;; highlight CL keywords
- ("\\s :\\(\\(\\sw\\|\\s_\\)+\\)\\>" . 1)
+ (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\\(a\\(dvice\\|lias\\)\\|macro\\|subst\\|un\\)\\)\\>"
+ "\\s *\\([^ \t\n\)]+\\)?")
+ '(1 font-lock-keyword-face) '(4 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)
(defconst lisp-font-lock-keywords-2
(append
lisp-font-lock-keywords-1
- '(;;
- ;; Highlight control structures
- ("(\\(cond\\|if\\|when\\|unless\\|[ec]?\\(type\\)?case\\)[ \t\n]" . 1)
- ("(\\(while\\|do\\|let\\*?\\|flet\\|labels\\|prog[nv12*]?\\)[ \t\n]" . 1)
- ("(\\(catch\\|\\throw\\|block\\|return\\|return-from\\)[ \t\n]" . 1)
- ("(\\(save-restriction\\|save-window-restriction\\)[ \t\n]" . 1)
- ("(\\(save-excursion\\|unwind-protect\\|condition-case\\)[ \t\n]" . 1)
- ;;
- ;; highlight function names in emacs-lisp docstrings (in the syntax
- ;; that substitute-command-keys understands.)
- ("\\\\\\\\\\[\\([^]\\\n]+\\)]" 1 font-lock-keyword-face t)
- ;;
- ;; highlight words inside `' which tend to be function names
- ("`\\([-a-zA-Z0-9_][-a-zA-Z0-9_][-a-zA-Z0-9_.]+\\)'"
- 1 font-lock-keyword-face t)
- ))
+ (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"
+ "\\)[ \t\n]") 1)
+ ;; CLisp:
+; ("when" "unless" "do" "flet" "labels" "return" "return-from")
+ '("(\\(do\\|flet\\|labels\\|return\\(\\|-from\\)\\|unless\\|when\\)\\>"
+ . 1)
+ ;;
+ ;; Fontify CLisp keywords.
+ '("\\s :\\([-a-zA-Z0-9]+\\)\\>" . 1)
+ ;;
+ ;; 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 function names
+ (let ((word-char "[-+a-zA-Z0-9_.*]"))
+ (list (concat "`\\(" word-char word-char "+\\)'")
+ 1 'font-lock-reference-face t))
+ ;;
+ ;; & keywords as types
+ '("\\&\\(optional\\|rest\\)\\>" . font-lock-type-face)
+ ))
"For consideration as a value of `lisp-font-lock-keywords'.
This does a lot more highlighting.")
"For consideration as a value of `c++-font-lock-keywords'.
This does a lot more highlighting.")
-(let* ((storage "auto\\|extern\\|register\\|static\\|typedef")
- (struct "struct\\|union\\|enum")
- (prefixes "signed\\|unsigned\\|short\\|long")
- (types (concat prefixes "\\|int\\|char\\|float\\|double\\|void"))
- (ctoken "[a-zA-Z0-9_:~*]+")
- (c++-things (concat
- "const\\|class\\|protected:\\|private:\\|public:\\|inline\\|"
- "new\\|delete")))
+(let ((type-types
+; ("auto" "extern" "register" "static" "typedef" "struct" "union" "enum"
+; "signed" "unsigned" "short" "long" "int" "char" "float" "double"
+; "void")
+ (concat "auto\\|char\\|double\\|e\\(num\\|xtern\\)\\|float\\|int\\|"
+ "long\\|register\\|s\\(hort\\|igned\\|t\\(atic\\|ruct\\)\\)\\|"
+ "typedef\\|un\\(ion\\|signed\\)\\|void")) ; 4 ()s deep.
+ (c++-types
+; ("const" "class" "protected" "private" "public" "inline" "bool"
+; "virtual")
+ (concat "bool\\|c\\(lass\\|onst\\)\\|inline\\|"
+ "p\\(r\\(ivate\\|otected\\)\\|ublic\\)\\|virtual"))
+ (ctoken "[a-zA-Z0-9_:~]+"))
(setq c-font-lock-keywords-1
(list
- ;; fontify preprocessor directives as comments.
- '("^#[ \t]*[a-z]+" . font-lock-comment-face)
- ;;
- ;; fontify names being defined.
- '("^#[ \t]*\\(define\\|undef\\)[ \t]+\\(\\(\\sw\\|\\s_\\)+\\)" 2
- font-lock-function-name-face)
;;
- ;; fontify other preprocessor lines.
- '("^#[ \t]*\\(if\\|elif\\|else\\|endif\\)[ \t]+\\([^\n]+\\)"
- 2 font-lock-function-name-face keep)
- '("^#[ \t]*\\(ifn?def\\)[ \t]+\\([^ \t\n]+\\)"
- 2 font-lock-function-name-face t)
- ;;
- ;; fontify the filename in #include <...>
- ;; don't need to do this for #include "..." because those were
- ;; already fontified as strings by the syntactic pass.
+ ;; Fontify filenames in #include <...> preprocessor directives.
'("^#[ \t]*include[ \t]+\\(<[^>\"\n]+>\\)" 1 font-lock-string-face)
;;
- ;; fontify the names of functions being defined.
- (list (concat
- "^\\(" ctoken "[ \t]+\\)?" ; type specs; there can be no
- "\\(" ctoken "[ \t]+\\)?" ; more than 3 tokens, right?
- "\\(" ctoken "[ \t]+\\)?"
- "\\([*&]+[ \t]*\\)?" ; pointer
- "\\(" ctoken "\\)[ \t]*(") ; name
- 5 'font-lock-function-name-face)
- ;;
- ;;
- ;; Fontify structure names (in structure definition form).
- (list (concat "^\\(" storage "\\)?[ \t]*\\<\\(" struct "\\)"
- "[ \t]+\\(" ctoken "\\)[ \t]*\\(\{\\|$\\)")
- 3 'font-lock-function-name-face)
+ ;; Fontify function macro names.
+ '("^#[ \t]*define[ \t]+\\(\\(\\sw+\\)(\\)" 2 font-lock-function-name-face)
;;
- ;; Fontify declarations of simple identifiers (including typedefs).
- ;; (Should this be in c-font-lock-keywords-2 instead?)
- (list (concat "^[ \t]*\\(\\(" storage "\\)[ \t]+\\)?\\(\\(\\(" prefixes
- "\\)\\>[ \t]*\\)*\\(" types "\\)\\)[ \t]+\\(" ctoken
- "\\)[ \t]*[=;]")
- 7 'font-lock-function-name-face 'keep)
+ ;; Fontify otherwise as symbol names, and the preprocessor directive names.
+ '("^\\(#[ \t]*[a-z]+\\)\\>[ \t]*\\(\\sw+\\)?"
+ (1 font-lock-reference-face) (2 font-lock-variable-name-face nil t))
;;
- ;; And likewise for structs
- (list (concat "^[ \t]*\\(\\(" storage "\\)[ \t]+\\)?\\(" struct
- "\\)[ \t]+" ctoken "[ \t]+\\(" ctoken "\\);")
- 4 'font-lock-function-name-face 'keep)
- ;;
- ;; Fontify case clauses. This is fast because its anchored on the left.
- '("case[ \t]+\\(\\(\\sw\\|\\s_\\)+\\):". 1)
- '("\\<\\(default\\):". 1)
+ ;; 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
- (cons (concat "\\<\\(" storage "\\)\\>") 'font-lock-type-face)
- (cons (concat "\\<\\(" types "\\)\\>") 'font-lock-type-face)
- (cons (concat "\\<\\(\\(\\(" prefixes "\\)\\>[ \t]*\\)*\\(" types
- "\\)\\)\\>")
- 'font-lock-type-face)
- (list (concat "\\<\\(" struct "\\)[ \t]+" ctoken)
- 0 'font-lock-type-face 'keep)
+ ;; Fontify all storage classes and type specifiers (before declarations).
+ (cons (concat "\\<\\(" type-types "\\)\\>") 'font-lock-type-face)
;;
- ;; fontify all builtin tokens
- (cons (concat
- "[ \t]\\("
- (mapconcat 'identity
- '("for" "while" "do" "return" "goto" "case" "break" "switch"
- "if" "else" "default" "continue" "default")
- "\\|")
- "\\)[ \t\n(){};,]")
- 1)
+ ;; Fontify variable/structure name declarations and definitions, or
+ ;; function name declarations (plus definitions with type on same line).
+ (list (concat "\\<\\(" type-types "\\)[ \t*&]+"
+ "\\(" ctoken "[ \t*&]+\\)*"
+ "\\(" ctoken "\\)[ \t]*\\((\\)?")
+ 7
+ '(if (match-beginning 8)
+ 'font-lock-function-name-face
+ 'font-lock-variable-name-face))
+ ;; Is highlighting above using (6 font-lock-type-face nil t) a good idea?
;;
- ;; fontify case targets and goto-tags. This is slow because the
- ;; expression is anchored on the right.
- '("[ \t\n]\\(\\(\\sw\\|\\s_\\)+\\):" . 1)
+ ;; Fontify variable names declared with structures, or typedef names.
+ '("}[ \t]*\\(\\sw+\\)[ \t]*[;,[]" 1 font-lock-variable-name-face)
;;
- ;; Fontify variables declared with structures, or typedef names.
- '("}[ \t*]*\\(\\(\\sw\\|\\s_\\)+\\)[ \t]*[,;]"
- 1 font-lock-function-name-face)
+ ;; Fontify all builtin keywords (except case and goto; see below).
+ (cons (concat
+; ("for" "while" "do" "return" "goto" "case" "break" "switch"
+; "if" "else" "default" "continue" "default")
+ "\\<\\(break\\|continue\\|d\\(efault\\|o\\)\\|else\\|"
+ "for\\|if\\|return\\|switch\\|while\\)\\>")
+ 'font-lock-keyword-face)
;;
- ;; Fontify global variables without a type.
-; '("^\\([_a-zA-Z0-9:~*]+\\)[ \t]*[[;={]" 1 font-lock-function-name-face)
+ ;; Fontify case/goto keywords and targets, and goto tags.
+ '("\\<\\(case\\|goto\\)\\>[ \t]*\\([^ \t\n:;]+\\)?"
+ (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
- (cons
- (concat "\\(" c++-things "\\)[ \t\n]")
- c-font-lock-keywords-1))
+ (setq c++-font-lock-keywords-1 c-font-lock-keywords-1)
(setq c++-font-lock-keywords-2
- (cons
- (cons (concat "\\<\\(" c++-things "\\)\\>") 'font-lock-type-face)
- c-font-lock-keywords-2))
+ (append
+ (list
+ ;;
+ ;; Fontify C++ type specifiers (before case targets/goto tags).
+ (cons (concat "\\<\\(" c++-types "\\)\\>") 'font-lock-type-face)
+ ;;
+ ;; Fontify C++ builtin keywords.
+ '("\\<\\(delete\\|new\\)\\>" . font-lock-keyword-face))
+ c-font-lock-keywords-2))
)
; default to the gaudier variety?
(defvar c++-font-lock-keywords c++-font-lock-keywords-1
"Additional expressions to highlight in C++ mode.")
-
-(defvar perl-font-lock-keywords
- (list
- (cons (concat "[ \n\t{]*\\("
- (mapconcat 'identity
- '("if" "until" "while" "elsif" "else" "unless" "for"
- "foreach" "continue" "exit" "die" "last" "goto" "next"
- "redo" "return" "local" "exec")
- "\\|")
- "\\)[ \n\t;(]") 1)
- (mapconcat 'identity
- '("#endif" "#else" "#ifdef" "#ifndef" "#if" "#include"
- "#define" "#undef")
- "\\|")
- '("^[ \n\t]*sub[ \t]+\\([^ \t{]+\\)[ \t]*[{]" 1 font-lock-function-name-face)
- '("[ \n\t{]*\\(eval\\)[ \n\t(;]" 1 font-lock-function-name-face)
- '("\\(--- .* ---\\|=== .* ===\\)" . font-lock-doc-string-face)
- )
- "Additional expressions to highlight in Perl mode.")
-
(defvar tex-font-lock-keywords
(list
'("\\(\\\\\\([a-zA-Z@]+\\|.\\)\\)" 1 font-lock-keyword-face t)
)
"Additional expressions to highlight in TeX mode.")
-(defvar texi-font-lock-keywords
- (list
- "@\\(@\\|[^}\t \n{]+\\)" ;commands
- '("^\\(@c\\|@comment\\)[ \t].*$" . font-lock-comment-face) ;comments
- '("^\\(*.*\\)[\t ]*$" 1 font-lock-function-name-face t) ;menu items
- '("@\\(emph\\|strong\\|b\\|i\\){\\([^}]+\\)" 2 font-lock-comment-face t)
- '("@\\(file\\|kbd\\|key\\){\\([^}]+\\)" 2 font-lock-string-face t)
- '("@\\(samp\\|code\\|var\\){\\([^}]+\\)" 2 font-lock-function-name-face t)
- '("@\\(xref\\|pxref\\){\\([^}]+\\)" 2 font-lock-keyword-face t)
- '("@end *\\([a-zA-Z0-9]+\\)[ \t]*$" 1 font-lock-function-name-face t)
- '("@item \\(.*\\)$" 1 font-lock-function-name-face t)
- '("\\$\\([^$]*\\)\\$" 1 font-lock-string-face t)
- )
- "Additional expressions to highlight in TeXinfo mode.")
-
-(defvar shell-font-lock-keywords
- (list (cons shell-prompt-pattern 'font-lock-keyword-face)
- '("[ \t]\\([+-][^ \t\n]+\\)" 1 font-lock-comment-face)
- '("^[^ \t]+:.*$" . font-lock-string-face)
- '("^\\[[1-9][0-9]*\\]" . font-lock-string-face))
- "Additional expressions to highlight in Shell mode.")
-
-(defvar dired-font-lock-keywords
- '(;; Put directory headers in italics.
- ("^ \\(/.+\\)$" 1 font-lock-type-face)
- ;; Put symlinks in bold italics.
- ("\\([^ ]+\\) -> [^ ]+$" . font-lock-function-name-face)
- ;; Put marks in bold.
- ("^\\([^ ]\\).*$" 1 font-lock-keyword-face t)
- ;; Put files that are subdirectories in bold.
- ("^..d.* \\([^ ]+\\)$" 1 font-lock-keyword-face))
- "Additional expressions to highlight in Dired mode.")
-
-(defvar rmail-font-lock-keywords
- '(;; Put From field in bold.
- ("^From: \\(.*\\)$" 1 font-lock-keyword-face)
- ;; Put subject in bold italics
- ("^Subject: \\(.*\\)$" 1 font-lock-function-name-face))
- "Additional expressions to highlight in Rmail mode.")
-
-(defvar rmail-summary-font-lock-keywords
- '(("^\\s *[0-9]+D.*$" . font-lock-doc-string-face)
- ("^\\s *[0-9]+-.*$" . font-lock-keyword-face))
- "Additional expressions to highlight in Rmail Summary mode.")
-
-(defvar compilation-mode-font-lock-keywords
- '(("^\\([^\n:]*:\\([0-9]+:\\)+\\)\\(.*\\)$" 1 font-lock-function-name-face))
-;;; ("^\\([^\n:]*:\\([0-9]+:\\)+\\)\\(.*\\)$" 0 font-lock-keyword-face keep)
- "Additional expressions to highlight in Compilation mode.")
+;; There is no html-mode.el shipped with Emacs... Yet.
+;(defvar 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 font-lock-defaults-alist
+ '((bibtex-mode . (tex-font-lock-keywords))
+ (c++-c-mode . (c-font-lock-keywords))
+ (c++-mode . (c++-font-lock-keywords))
+ (c-mode . (c-font-lock-keywords))
+ (emacs-lisp-mode . (lisp-font-lock-keywords))
+ (html-mode . (html-font-lock-keywords))
+ (latex-mode . (tex-font-lock-keywords))
+ (lisp-mode . (lisp-font-lock-keywords))
+ (plain-tex-mode . (tex-font-lock-keywords))
+ (slitex-mode . (tex-font-lock-keywords))
+ (tex-mode . (tex-font-lock-keywords)))
+ "*Alist of major mode and Font Lock defaults.
+Each item should be a cons pair of the form:
+ (MAJOR-MODE . (FONT-LOCK-KEYWORDS NOT-SYNTACTICALLY CASE-FOLD)
+where both MAJOR-MODE and FONT-LOCK-KEYWORDS are symbols. If NOT-SYNTACTICALLY
+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.")
(defun font-lock-set-defaults ()
- "Set `font-lock-keywords' to something appropriate for this mode."
- (if (memq major-mode '(rmail-mode dired-mode compilation-mode shell-mode))
- (setq font-lock-no-comments t))
- (if (not font-lock-keywords) ; if not already set.
- (setq font-lock-keywords
- (cond ((eq major-mode 'lisp-mode) lisp-font-lock-keywords)
- ((eq major-mode 'emacs-lisp-mode) lisp-font-lock-keywords)
- ((eq major-mode 'c-mode)
- (make-local-variable 'font-lock-syntax-table)
- (setq font-lock-syntax-table
- (copy-syntax-table (syntax-table)))
- (modify-syntax-entry ?_ "w" font-lock-syntax-table)
- c-font-lock-keywords)
- ((eq major-mode 'c++-c-mode)
- (make-local-variable 'font-lock-syntax-table)
- (setq font-lock-syntax-table
- (copy-syntax-table (syntax-table)))
- (modify-syntax-entry ?_ "w" font-lock-syntax-table)
- c-font-lock-keywords)
- ((eq major-mode 'c++-mode) c++-font-lock-keywords)
- ((eq major-mode 'perl-mode) perl-font-lock-keywords)
- ((eq major-mode 'plain-tex-mode) tex-font-lock-keywords)
- ((eq major-mode 'latex-mode) tex-font-lock-keywords)
- ((eq major-mode 'slitex-mode) tex-font-lock-keywords)
- ((eq major-mode 'texinfo-mode) texi-font-lock-keywords)
- ((eq major-mode 'shell-mode) shell-font-lock-keywords)
- ((eq major-mode 'dired-mode) dired-font-lock-keywords)
- ((eq major-mode 'rmail-mode) rmail-font-lock-keywords)
- ((eq major-mode 'rmail-summary-mode)
- rmail-summary-font-lock-keywords)
- ((eq major-mode 'compilation-mode)
- compilation-mode-font-lock-keywords)
- (t nil)))))
+ "Set fontification defaults appropriately for this mode.
+Sets `font-lock-keywords', `font-lock-keywords-case-fold-search' and
+`font-lock-no-comments' using `font-lock-defaults-alist'.
+Also sets `font-lock-syntax-table' for C and C++ modes."
+ (let ((defaults (cdr (assq major-mode font-lock-defaults-alist))))
+ ;; Keywords?
+ (if (not font-lock-keywords) ; if not already set.
+ (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?
+ (cond ((eq major-mode 'c-mode)
+ (make-local-variable 'font-lock-syntax-table)
+ (setq font-lock-syntax-table (copy-syntax-table (syntax-table)))
+ (modify-syntax-entry ?_ "w" font-lock-syntax-table))
+ ((eq major-mode 'c++-c-mode)
+ (make-local-variable 'font-lock-syntax-table)
+ (setq font-lock-syntax-table (copy-syntax-table (syntax-table)))
+ (modify-syntax-entry ?_ "w" font-lock-syntax-table)))))
+
+;; Install ourselves:
+
+(mapcar 'font-lock-make-face font-lock-face-attributes)
+
+(or (assq 'font-lock-mode minor-mode-alist)
+ (setq minor-mode-alist (cons '(font-lock-mode " Font") minor-mode-alist)))
+
+;; Provide ourselves:
(provide 'font-lock)
projects / emacs.git / commitdiff