;;; hi-lock.el --- minor mode for interactive automatic highlighting
;; Copyright (C) 2000, 2001, 2002, 2003, 2004,
-;; 2005 Free Software Foundation, Inc.
+;; 2005, 2006 Free Software Foundation, Inc.
;; Author: David M. Koppelman, koppel@ee.lsu.edu
;; Keywords: faces, minor-mode, matching, display
;; hi-lock mode and adds a "Regexp Highlighting" entry
;; to the edit menu.
;;
-;; (hi-lock-mode 1)
+;; (global-hi-lock-mode 1)
;;
;; You might also want to bind the hi-lock commands to more
;; finger-friendly sequences:
(defcustom hi-lock-file-patterns-range 10000
"Limit of search in a buffer for hi-lock patterns.
-When a file is visited and hi-lock mode is on patterns starting
+When a file is visited and hi-lock mode is on, patterns starting
up to this limit are added to font-lock's patterns. See documentation
of functions `hi-lock-mode' and `hi-lock-find-patterns'."
:type 'integer
:group 'hi-lock)
+(defcustom hi-lock-highlight-range 200000
+ "Size of area highlighted by hi-lock when font-lock not active.
+Font-lock is not active in buffers that do their own highlighting,
+such as the buffer created by `list-colors-display'. In those buffers
+hi-lock patterns will only be applied over a range of
+`hi-lock-highlight-range' characters. If font-lock is active then
+highlighting will be applied throughout the buffer."
+ :type 'integer
+ :group 'hi-lock)
+
(defcustom hi-lock-exclude-modes
'(rmail-mode mime/viewer-mode gnus-article-mode)
"List of major modes in which hi-lock will not run.
(defvar hi-lock-file-patterns-prefix "Hi-lock"
"Regexp for finding hi-lock patterns at top of file.")
+(defvar hi-lock-archaic-interface-message-used nil
+ "True if user alerted that `global-hi-lock-mode' is now the global switch.
+Earlier versions of hi-lock used `hi-lock-mode' as the global switch;
+the message is issued if it appears that `hi-lock-mode' is used assuming
+that older functionality. This variable avoids multiple reminders.")
+
+(defvar hi-lock-archaic-interface-deduce nil
+ "If non-nil, sometimes assume that `hi-lock-mode' means `global-hi-lock-mode'.
+Assumption is made if `hi-lock-mode' used in the *scratch* buffer while
+a library is being loaded.")
+
(make-variable-buffer-local 'hi-lock-interactive-patterns)
(put 'hi-lock-interactive-patterns 'permanent-local t)
(make-variable-buffer-local 'hi-lock-regexp-history)
;; Visible Functions
-
;;;###autoload
-(define-minor-mode hi-lock-buffer-mode
+(define-minor-mode hi-lock-mode
"Toggle minor mode for interactively adding font-lock highlighting patterns.
-If ARG positive turn hi-lock on. Issuing a hi-lock command will also
-turn hi-lock on. When hi-lock is turned on, a \"Regexp Highlighting\"
-submenu is added to the \"Edit\" menu. The commands in the submenu,
-which can be called interactively, are:
+If ARG positive, turn hi-lock on. Issuing a hi-lock command will also
+turn hi-lock on. To turn hi-lock on in all buffers use
+`global-hi-lock-mode' or in your .emacs file (global-hi-lock-mode 1).
+When hi-lock is turned on, a \"Regexp Highlighting\" submenu is added
+to the \"Edit\" menu. The commands in the submenu, which can be
+called interactively, are:
\\[highlight-regexp] REGEXP FACE
Highlight matches of pattern REGEXP in current buffer with FACE.
Remove highlighting on matches of REGEXP in current buffer.
\\[hi-lock-write-interactive-patterns]
- Write active REGEXPs into buffer as comments (if possible). They will
+ Write active REGEXPs into buffer as comments (if possible). They will
be read the next time file is loaded or when the \\[hi-lock-find-patterns] command
is issued. The inserted regexps are in the form of font lock keywords.
- (See `font-lock-keywords') They may be edited and re-loaded with \\[hi-lock-find-patterns],
+ (See `font-lock-keywords'.) They may be edited and re-loaded with \\[hi-lock-find-patterns],
any valid `font-lock-keywords' form is acceptable.
\\[hi-lock-find-patterns]
When hi-lock is started and if the mode is not excluded, the
beginning of the buffer is searched for lines of the form:
Hi-lock: FOO
-where FOO is a list of patterns. These are added to the font lock keywords
-already present. The patterns must start before position (number
-of characters into buffer) `hi-lock-file-patterns-range'. Patterns
-will be read until
+where FOO is a list of patterns. These are added to the font lock
+keywords already present. The patterns must start before position
+\(number of characters into buffer) `hi-lock-file-patterns-range'.
+Patterns will be read until
Hi-lock: end
-is found. A mode is excluded if it's in the list `hi-lock-exclude-modes'."
+is found. A mode is excluded if it's in the list `hi-lock-exclude-modes'."
:group 'hi-lock
- :lighter " H"
+ :lighter (:eval (if (or hi-lock-interactive-patterns
+ hi-lock-file-patterns)
+ " Hi" ""))
:global nil
:keymap hi-lock-map
- (if hi-lock-buffer-mode
+ (when (and (equal (buffer-name) "*scratch*")
+ load-in-progress
+ (not (interactive-p))
+ (not hi-lock-archaic-interface-message-used))
+ (setq hi-lock-archaic-interface-message-used t)
+ (if hi-lock-archaic-interface-deduce
+ (global-hi-lock-mode hi-lock-mode)
+ (warn
+ "Possible archaic use of (hi-lock-mode).
+Use (global-hi-lock-mode 1) in .emacs to enable hi-lock for all buffers,
+use (hi-lock-mode 1) for individual buffers. For compatibility with Emacs
+versions before 22 use the following in your .emacs file:
+
+ (if (functionp 'global-hi-lock-mode)
+ (global-hi-lock-mode 1)
+ (hi-lock-mode 1))
+")))
+ (if hi-lock-mode
;; Turned on.
(progn
(unless font-lock-mode (font-lock-mode 1))
;; Turned off.
(when (or hi-lock-interactive-patterns
hi-lock-file-patterns)
- (when hi-lock-interactive-patterns
+ (when hi-lock-interactive-patterns
(font-lock-remove-keywords nil hi-lock-interactive-patterns)
(setq hi-lock-interactive-patterns nil))
(when hi-lock-file-patterns
(font-lock-remove-keywords nil hi-lock-file-patterns)
(setq hi-lock-file-patterns nil))
- (if font-lock-mode
- (font-lock-fontify-buffer)))
+ (remove-overlays nil nil 'hi-lock-overlay t)
+ (when font-lock-fontified (font-lock-fontify-buffer)))
(define-key-after menu-bar-edit-menu [hi-lock] nil)
(remove-hook 'font-lock-mode-hook 'hi-lock-font-lock-hook t)))
;;;###autoload
-(define-global-minor-mode hi-lock-mode
- hi-lock-buffer-mode turn-on-hi-lock-if-enabled
+(define-global-minor-mode global-hi-lock-mode
+ hi-lock-mode turn-on-hi-lock-if-enabled
:group 'hi-lock)
-
+
(defun turn-on-hi-lock-if-enabled ()
+ (setq hi-lock-archaic-interface-message-used t)
(unless (memq major-mode hi-lock-exclude-modes)
- (hi-lock-buffer-mode 1)))
+ (hi-lock-mode 1)))
;;;###autoload
(defalias 'highlight-lines-matching-regexp 'hi-lock-line-face-buffer)
Interactively, prompt for REGEXP then FACE. Buffer-local history
list maintained for regexps, global history maintained for faces.
\\<minibuffer-local-map>Use \\[next-history-element] and \\[previous-history-element] to retrieve next or previous history item.
-\(See info node `Minibuffer History')"
+\(See info node `Minibuffer History'.)"
(interactive
(list
(hi-lock-regexp-okay
(cons (or (car hi-lock-regexp-history) "") 1 )
nil nil 'hi-lock-regexp-history))
(hi-lock-read-face-name)))
- (or (facep face) (setq face 'rwl-yellow))
- (unless hi-lock-buffer-mode (hi-lock-buffer-mode 1))
+ (or (facep face) (setq face 'hi-yellow))
+ (unless hi-lock-mode (hi-lock-mode 1))
(hi-lock-set-pattern
;; The \\(?:...\\) grouping construct ensures that a leading ^, +, * or ?
;; or a trailing $ in REGEXP will be interpreted correctly.
Interactively, prompt for REGEXP then FACE. Buffer-local history
list maintained for regexps, global history maintained for faces.
\\<minibuffer-local-map>Use \\[next-history-element] and \\[previous-history-element] to retrieve next or previous history item.
-\(See info node `Minibuffer History')"
+\(See info node `Minibuffer History'.)"
(interactive
(list
(hi-lock-regexp-okay
(cons (or (car hi-lock-regexp-history) "") 1 )
nil nil 'hi-lock-regexp-history))
(hi-lock-read-face-name)))
- (or (facep face) (setq face 'rwl-yellow))
- (unless hi-lock-buffer-mode (hi-lock-buffer-mode 1))
+ (or (facep face) (setq face 'hi-yellow))
+ (unless hi-lock-mode (hi-lock-mode 1))
(hi-lock-set-pattern regexp face))
;;;###autoload
(cons (or (car hi-lock-regexp-history) "") 1 )
nil nil 'hi-lock-regexp-history)))
(hi-lock-read-face-name)))
- (or (facep face) (setq face 'rwl-yellow))
- (unless hi-lock-buffer-mode (hi-lock-buffer-mode 1))
+ (or (facep face) (setq face 'hi-yellow))
+ (unless hi-lock-mode (hi-lock-mode 1))
(hi-lock-set-pattern regexp face))
;;;###autoload
(font-lock-remove-keywords nil (list keyword))
(setq hi-lock-interactive-patterns
(delq keyword hi-lock-interactive-patterns))
- (font-lock-fontify-buffer))))
+ (remove-overlays
+ nil nil 'hi-lock-overlay-regexp (hi-lock-string-serialize regexp))
+ (when font-lock-fontified (font-lock-fontify-buffer)))))
;;;###autoload
(defun hi-lock-write-interactive-patterns ()
`highlight-regexp' and `highlight-lines-matching-regexp'; they can
be found in variable `hi-lock-interactive-patterns'."
(interactive)
- (let ((prefix (format "%s %s:" (or comment-start "") "Hi-lock")))
- (when (> (+ (point) (length prefix)) hi-lock-file-patterns-range)
- (beep)
- (message
- "Warning, inserted keywords not close enough to top of file."))
+ (if (null hi-lock-interactive-patterns)
+ (error "There are no interactive patterns"))
+ (let ((beg (point)))
(mapcar
(lambda (pattern)
- (insert (format "%s (%s) %s\n"
- prefix (prin1-to-string pattern) (or comment-end ""))))
- hi-lock-interactive-patterns)))
-
+ (insert (format "%s: (%s)\n"
+ hi-lock-file-patterns-prefix
+ (prin1-to-string pattern))))
+ hi-lock-interactive-patterns)
+ (comment-region beg (point)))
+ (when (> (point) hi-lock-file-patterns-range)
+ (warn "Inserted keywords not close enough to top of file")))
;; Implementation Functions
"Highlight REGEXP with face FACE."
(let ((pattern (list regexp (list 0 (list 'quote face) t))))
(unless (member pattern hi-lock-interactive-patterns)
- (font-lock-add-keywords nil (list pattern))
+ (font-lock-add-keywords nil (list pattern) t)
(push pattern hi-lock-interactive-patterns)
- (let ((buffer-undo-list t)
- (inhibit-read-only t)
- (mod (buffer-modified-p)))
- (save-excursion
- (goto-char (point-min))
- (while (re-search-forward regexp (point-max) t)
- (put-text-property
- (match-beginning 0) (match-end 0) 'face face)
- (goto-char (match-end 0))))
- (set-buffer-modified-p mod)))))
+ (if font-lock-fontified
+ (font-lock-fontify-buffer)
+ (let* ((serial (hi-lock-string-serialize regexp))
+ (range-min (- (point) (/ hi-lock-highlight-range 2)))
+ (range-max (+ (point) (/ hi-lock-highlight-range 2)))
+ (search-start
+ (max (point-min)
+ (- range-min (max 0 (- range-max (point-max))))))
+ (search-end
+ (min (point-max)
+ (+ range-max (max 0 (- (point-min) range-min))))))
+ (save-excursion
+ (goto-char search-start)
+ (while (re-search-forward regexp search-end t)
+ (let ((overlay (make-overlay (match-beginning 0) (match-end 0))))
+ (overlay-put overlay 'hi-lock-overlay t)
+ (overlay-put overlay 'hi-lock-overlay-regexp serial)
+ (overlay-put overlay 'face face))
+ (goto-char (match-end 0)))))))))
(defun hi-lock-set-file-patterns (patterns)
"Replace file patterns list with PATTERNS and refontify."
(when (or hi-lock-file-patterns patterns)
(font-lock-remove-keywords nil hi-lock-file-patterns)
(setq hi-lock-file-patterns patterns)
- (font-lock-add-keywords nil hi-lock-file-patterns)
+ (font-lock-add-keywords nil hi-lock-file-patterns t)
(font-lock-fontify-buffer)))
(defun hi-lock-find-patterns ()
(setq all-patterns (append (read (current-buffer)) all-patterns))
(error (message "Invalid pattern list expression at %d"
(line-number-at-pos)))))))
- (when hi-lock-buffer-mode (hi-lock-set-file-patterns all-patterns))
+ (when hi-lock-mode (hi-lock-set-file-patterns all-patterns))
(if (interactive-p)
(message "Hi-lock added %d patterns." (length all-patterns))))))
(defun hi-lock-font-lock-hook ()
- "Add hi lock patterns to font-lock's."
+ "Add hi-lock patterns to font-lock's."
(if font-lock-mode
- (progn (font-lock-add-keywords nil hi-lock-file-patterns)
- (font-lock-add-keywords nil hi-lock-interactive-patterns))
- (hi-lock-buffer-mode -1)))
+ (progn
+ (font-lock-add-keywords nil hi-lock-file-patterns t)
+ (font-lock-add-keywords nil hi-lock-interactive-patterns t))
+ (hi-lock-mode -1)))
+
+(defvar hi-lock-string-serialize-hash
+ (make-hash-table :test 'equal)
+ "Hash table used to assign unique numbers to strings.")
+
+(defvar hi-lock-string-serialize-serial 1
+ "Number assigned to last new string in call to `hi-lock-string-serialize'.
+A string is considered new if it had not previously been used in a call to
+`hi-lock-string-serialize'.")
+
+(defun hi-lock-string-serialize (string)
+ "Return unique serial number for STRING."
+ (interactive)
+ (let ((val (gethash string hi-lock-string-serialize-hash)))
+ (if val val
+ (puthash string
+ (setq hi-lock-string-serialize-serial
+ (1+ hi-lock-string-serialize-serial))
+ hi-lock-string-serialize-hash)
+ hi-lock-string-serialize-serial)))
(provide 'hi-lock)