;;; lazy-lock.el --- Lazy demand-driven fontification for fast Font Lock mode.
-;; Copyright (C) 1994, 1995, 1996, 1997 Free Software Foundation, Inc.
+;; Copyright (C) 1994, 1995, 1996, 1997, 1998 Free Software Foundation, Inc.
-;; Author: Simon Marshall <simon@gnu.ai.mit.edu>
+;; Author: Simon Marshall <simon@gnu.org>
+;; Maintainer: FSF
;; Keywords: faces files
-;; Version: 2.08.03
+;; Version: 2.11
;;; This file is part of GNU Emacs.
;; point in making this version of lazy-lock.el work with it. Anyway, that's
;; Lit 30 of my humble opinion.
;;
-;; Steve Baur reverted to a non-hacked version 1 lazy-lock.el for XEmacs 19.15
-;; and 20.0. Obviously, the above `post-command-hook' problems still apply.)
-;;
;; - Version 1 stealth fontification is also implemented by placing a function
;; on `post-command-hook'. This function waits for a given amount of time,
;; and, if Emacs remains idle, fontifies where necessary. Again, there are a
;; 2.08--2.09:
;; - Removed `byte-*' variables from `eval-when-compile' (Erik Naggum hint)
;; - Made various wrapping `inhibit-point-motion-hooks' (Vinicius Latorre hint)
+;; - Made `lazy-lock-fontify-after-idle' wrap `minibuffer-auto-raise'
+;; - Made `lazy-lock-fontify-after-defer' paranoid about deferred buffers
+;; 2.09--2.10:
+;; - Use `window-end' UPDATE arg for Emacs 20.4 and later.
+;; - Made deferral `widen' before unfontifying (Dan Nicolaescu report)
+;; - Use `lazy-lock-fontify-after-visage' for hideshow.el (Dan Nicolaescu hint)
+;; - Use `other' widget where possible (Andreas Schwab fix)
+;; 2.10--2.11:
+;; - Used `with-temp-message' where possible to make messages temporary.
\f
;;; Code:
(put 'with-current-buffer 'lisp-indent-function 1)
;;
;; We use this for compatibility with a future Emacs.
+ (or (fboundp 'with-temp-message)
+ (defmacro with-temp-message (message &rest body)
+ (` (let ((temp-message (, message)) current-message)
+ (unwind-protect
+ (progn
+ (when temp-message
+ (setq current-message (current-message))
+ (message temp-message))
+ (,@ body))
+ (when temp-message
+ (message current-message)))))))
+ ;;
+ ;; We use this for compatibility with a future Emacs.
(or (fboundp 'defcustom)
(defmacro defcustom (symbol value doc &rest args)
(` (defvar (, symbol) (, value) (, doc))))))
; "Submit via mail a bug report on lazy-lock.el."
; (interactive)
; (let ((reporter-prompt-for-summary-p t))
-; (reporter-submit-bug-report "simon@gnu.ai.mit.edu" "lazy-lock 2.08.03"
+; (reporter-submit-bug-report "simon@gnu.org" "lazy-lock 2.11"
; '(lazy-lock-minimum-size lazy-lock-defer-on-the-fly
; lazy-lock-defer-on-scrolling lazy-lock-defer-contextually
; lazy-lock-defer-time lazy-lock-stealth-time
\f
;; User Variables:
-(defcustom lazy-lock-minimum-size (* 25 1024)
+(defcustom lazy-lock-minimum-size 25600
"*Minimum size of a buffer for demand-driven fontification.
On-demand fontification occurs if the buffer size is greater than this value.
If nil, means demand-driven fontification is never performed.
The value of this variable is used when Lazy Lock mode is turned on."
:type '(choice (const :tag "never" nil)
(const :tag "always" t)
- (sexp :tag "eventually" :format "%t\n" eventually))
+ (other :tag "eventually" eventually))
:group 'lazy-lock)
(defcustom lazy-lock-defer-contextually 'syntax-driven
The value of this variable is used when Lazy Lock mode is turned on."
:type '(choice (const :tag "never" nil)
(const :tag "always" t)
- (sexp :tag "syntax-driven" :format "%t\n" syntax-driven))
+ (other :tag "syntax-driven" syntax-driven))
:group 'lazy-lock)
(defcustom lazy-lock-defer-time
;;
;; Add package-specific hook.
(make-local-hook 'outline-view-change-hook)
- (add-hook 'outline-view-change-hook 'lazy-lock-fontify-after-outline nil t))
+ (add-hook 'outline-view-change-hook 'lazy-lock-fontify-after-visage nil t)
+ (make-local-hook 'hs-hide-hook)
+ (add-hook 'hs-hide-hook 'lazy-lock-fontify-after-visage nil t))
(defun lazy-lock-install-timers (dtime stime)
;; Schedule or re-schedule the deferral and stealth timers.
(let ((verbose (if (numberp font-lock-verbose)
(> (buffer-size) font-lock-verbose)
font-lock-verbose)))
- (if verbose (message "Fontifying %s..." (buffer-name)))
- ;; Make sure we fontify etc. in the whole buffer.
- (save-restriction
- (widen)
- (lazy-lock-fontify-region (point-min) (point-max)))
- (if verbose (message "Fontifying %s...%s" (buffer-name)
- (if (lazy-lock-unfontified-p) "quit" "done")))))
+ (with-temp-message
+ (when verbose
+ (format "Fontifying %s..." (buffer-name)))
+ ;; Make sure we fontify etc. in the whole buffer.
+ (save-restriction
+ (widen)
+ (lazy-lock-fontify-region (point-min) (point-max))))))
(add-hook 'after-change-functions 'font-lock-after-change-function nil t))
;;
;; Remove the text properties.
(remove-hook 'after-change-functions 'lazy-lock-fontify-rest-after-change t)
(remove-hook 'after-change-functions 'lazy-lock-defer-line-after-change t)
(remove-hook 'after-change-functions 'lazy-lock-defer-rest-after-change t)
- (remove-hook 'outline-view-change-hook 'lazy-lock-fontify-after-outline t))
+ (remove-hook 'outline-view-change-hook 'lazy-lock-fontify-after-visage t)
+ (remove-hook 'hs-hide-hook 'lazy-lock-fontify-after-visage t))
\f
;; Hook functions.
(defun lazy-lock-fontify-after-scroll (window window-start)
;; Called from `window-scroll-functions'.
- ;; Fontify WINDOW from WINDOW-START following the scroll. We cannot use
- ;; `window-end' so we work out what it would be via `vertical-motion'.
+ ;; Fontify WINDOW from WINDOW-START following the scroll.
(let ((inhibit-point-motion-hooks t))
- (save-excursion
- (goto-char window-start)
- (vertical-motion (window-height window) window)
- (lazy-lock-fontify-region window-start (point))))
+ (lazy-lock-fontify-region window-start (window-end window t)))
;; A prior deletion that did not cause scrolling, followed by a scroll, would
;; result in an unnecessary trigger after this if we did not cancel it now.
(set-window-redisplay-end-trigger window nil))
(defun lazy-lock-fontify-after-trigger (window trigger-point)
;; Called from `redisplay-end-trigger-functions'.
- ;; Fontify WINDOW from TRIGGER-POINT. We cannot use `window-end' so we work
- ;; out what it would be via `vertical-motion'.
+ ;; Fontify WINDOW from TRIGGER-POINT following the redisplay.
;; We could probably just use `lazy-lock-fontify-after-scroll' without loss:
- ;; (lazy-lock-fontify-after-scroll window (window-start window))
+ ;; (inline (lazy-lock-fontify-after-scroll window (window-start window)))
(let ((inhibit-point-motion-hooks t))
- (save-excursion
- (goto-char (window-start window))
- (vertical-motion (window-height window) window)
- (lazy-lock-fontify-region trigger-point (point)))))
+ (lazy-lock-fontify-region trigger-point (window-end window t))))
;; 2. Modified text must be marked as unfontified so it can be identified and
;; fontified later when Emacs is idle. Deferral occurs by adding one of
(save-buffer-state nil
(unless (memq (current-buffer) lazy-lock-buffers)
(push (current-buffer) lazy-lock-buffers))
- (remove-text-properties end (point-max) '(lazy-lock nil))))
+ (save-restriction
+ (widen)
+ (remove-text-properties end (point-max) '(lazy-lock nil)))))
(defun lazy-lock-defer-line-after-change (beg end old-len)
;; Called from `after-change-functions'.
(save-buffer-state nil
(unless (memq (current-buffer) lazy-lock-buffers)
(push (current-buffer) lazy-lock-buffers))
- (remove-text-properties (max (1- beg) (point-min))
- (point-max)
- '(lazy-lock nil))))
+ (save-restriction
+ (widen)
+ (remove-text-properties (max (1- beg) (point-min))
+ (point-max)
+ '(lazy-lock nil)))))
;; 3. Deferred fontification and stealth fontification are done from these two
;; functions. They are set up as Idle Timers.
(defun lazy-lock-fontify-after-defer ()
;; Called from `timer-idle-list'.
;; Fontify all windows where deferral has occurred for its buffer.
- (while (and lazy-lock-buffers (not (input-pending-p)))
- (let ((windows (get-buffer-window-list (car lazy-lock-buffers) 'nomini t)))
- (while windows
- (lazy-lock-fontify-window (car windows))
- (setq windows (cdr windows)))
- (setq lazy-lock-buffers (cdr lazy-lock-buffers))))
+ (save-excursion
+ (while (and lazy-lock-buffers (not (input-pending-p)))
+ (let ((buffer (car lazy-lock-buffers)) windows)
+ ;; Paranoia: check that the buffer is still live and Lazy Lock mode on.
+ (when (buffer-live-p buffer)
+ (set-buffer buffer)
+ (when lazy-lock-mode
+ (setq windows (get-buffer-window-list buffer 'nomini t))
+ (while windows
+ (lazy-lock-fontify-window (car windows))
+ (setq windows (cdr windows)))))
+ (setq lazy-lock-buffers (cdr lazy-lock-buffers)))))
;; Add hook if fontification should now be defer-driven in this buffer.
(when (and lazy-lock-mode lazy-lock-defer-on-scrolling
(memq 'lazy-lock-fontify-after-scroll window-scroll-functions)
;; Fontify all buffers that need it, stealthily while idle.
(unless (or executing-kbd-macro (window-minibuffer-p (selected-window)))
;; Loop over all buffers, fontify stealthily for each if necessary.
- (let ((buffers (buffer-list)) (continue t) message message-log-max)
+ (let ((buffers (buffer-list)) (continue t)
+ message message-log-max minibuffer-auto-raise)
(save-excursion
(do-while (and buffers continue)
(set-buffer (car buffers))
(if (not (and lazy-lock-mode (lazy-lock-unfontified-p)))
(setq continue (not (input-pending-p)))
;; Fontify regions in this buffer while there is no input.
- (do-while (and (lazy-lock-unfontified-p) continue)
- (if (and lazy-lock-stealth-load
- (> (car (load-average)) lazy-lock-stealth-load))
- ;; Wait a while before continuing with the loop.
- (progn
- (when message
- (message "Fontifying stealthily...suspended")
- (setq message nil))
- (setq continue (sit-for (or lazy-lock-stealth-time 30))))
- ;; Fontify a chunk.
+ (with-temp-message
(when lazy-lock-stealth-verbose
- (if message
- (message "Fontifying stealthily... %2d%% of %s"
- (lazy-lock-percent-fontified) (buffer-name))
- (message "Fontifying stealthily...")
- (setq message t)))
- (lazy-lock-fontify-chunk)
- (setq continue (sit-for (or lazy-lock-stealth-nice 0))))))
- (setq buffers (cdr buffers))))
- (when message
- (message "Fontifying stealthily...%s" (if continue "done" "quit"))))))
+ "Fontifying stealthily...")
+ (do-while (and (lazy-lock-unfontified-p) continue)
+ (if (and lazy-lock-stealth-load
+ (> (car (load-average)) lazy-lock-stealth-load))
+ ;; Wait a while before continuing with the loop.
+ (progn
+ (when message
+ (message "Fontifying stealthily...suspended")
+ (setq message nil))
+ (setq continue (sit-for (or lazy-lock-stealth-time 30))))
+ ;; Fontify a chunk.
+ (when lazy-lock-stealth-verbose
+ (if message
+ (message "Fontifying stealthily... %2d%% of %s"
+ (lazy-lock-percent-fontified) (buffer-name))
+ (message "Fontifying stealthily...")
+ (setq message t)))
+ (lazy-lock-fontify-chunk)
+ (setq continue (sit-for (or lazy-lock-stealth-nice 0)))))))
+ (setq buffers (cdr buffers)))))))
;; 4. Special circumstances.
-(defun lazy-lock-fontify-after-outline ()
- ;; Called from `outline-view-change-hook'.
+(defun lazy-lock-fontify-after-visage ()
+ ;; Called from `outline-view-change-hook' and `hs-hide-hook'.
;; Fontify windows showing the current buffer, as its visibility has changed.
- ;; This is a conspiracy hack between lazy-lock.el and noutline.el.
+ ;; This is a conspiracy hack between lazy-lock.el, outline.el and
+ ;; hideshow.el.
(let ((windows (get-buffer-window-list (current-buffer) 'nomini t)))
(while windows
(lazy-lock-fontify-conservatively (car windows))
(mapcar 'lazy-lock-fontify-conservatively
(get-buffer-window-list (pop lazy-lock-install) 'nomini t)))))
+(when (if (save-match-data (string-match "Lucid\\|XEmacs" (emacs-version)))
+ nil
+ (or (and (= emacs-major-version 20) (< emacs-minor-version 4))
+ (= emacs-major-version 19)))
+ ;;
+ ;; We use `vertical-motion' rather than `window-end' UPDATE arg.
+ (defun lazy-lock-fontify-after-scroll (window window-start)
+ ;; Called from `window-scroll-functions'.
+ ;; Fontify WINDOW from WINDOW-START following the scroll. We cannot use
+ ;; `window-end' so we work out what it would be via `vertical-motion'.
+ (let ((inhibit-point-motion-hooks t))
+ (save-excursion
+ (goto-char window-start)
+ (vertical-motion (window-height window) window)
+ (lazy-lock-fontify-region window-start (point))))
+ (set-window-redisplay-end-trigger window nil))
+ (defun lazy-lock-fontify-after-trigger (window trigger-point)
+ ;; Called from `redisplay-end-trigger-functions'.
+ ;; Fontify WINDOW from TRIGGER-POINT following the redisplay. We cannot
+ ;; use `window-end' so we work out what it would be via `vertical-motion'.
+ (let ((inhibit-point-motion-hooks t))
+ (save-excursion
+ (goto-char (window-start window))
+ (vertical-motion (window-height window) window)
+ (lazy-lock-fontify-region trigger-point (point))))))
+
(when (consp lazy-lock-defer-time)
;;
;; In 2.06.04 and below, `lazy-lock-defer-time' could specify modes and time.
(princ "The value of the variable `lazy-lock-defer-time' was\n ")
(princ lazy-lock-defer-time)
(princ "\n")
- (princ "This variable cannot now be a list of modes and time, ")
- (princ "so instead use the forms:\n")
+ (princ "This variable cannot now be a list of modes and time,\n")
+ (princ "so instead use ")
+ (princ (substitute-command-keys "\\[customize-option]"))
+ (princ " to modify the variables, or put the forms:\n")
(princ " (setq lazy-lock-defer-time ")
(princ (cdr lazy-lock-defer-time))
(princ ")\n")
(princ ")\n")
(princ "in your ~/.emacs. ")
(princ "The above forms have been evaluated for this editor session,\n")
- (princ "but you should change your ~/.emacs now."))
+ (princ "but you should use ")
+ (princ (substitute-command-keys "\\[customize-option]"))
+ (princ " or change your ~/.emacs now."))
(setq lazy-lock-defer-on-the-fly (car lazy-lock-defer-time)
lazy-lock-defer-time (cdr lazy-lock-defer-time)))
(princ "'"))
(princ ".\n")
(princ "This variable is now called `lazy-lock-defer-on-scrolling',\n")
- (princ "so instead use the form:\n")
+ (princ "so instead use ")
+ (princ (substitute-command-keys "\\[customize-option]"))
+ (princ " to modify the variable, or put the form:\n")
(princ " (setq lazy-lock-defer-on-scrolling ")
(unless (memq lazy-lock-defer-driven '(nil t))
(princ "'"))
(princ ")\n")
(princ "in your ~/.emacs. ")
(princ "The above form has been evaluated for this editor session,\n")
- (princ "but you should change your ~/.emacs now."))
+ (princ "but you should use ")
+ (princ (substitute-command-keys "\\[customize-option]"))
+ (princ " or change your ~/.emacs now."))
(setq lazy-lock-defer-on-scrolling lazy-lock-defer-driven))
\f
;; Possibly absent.
(cdr (or (assq major-mode alist) (assq t alist)))
alist)))
+(unless (fboundp 'buffer-live-p)
+ ;; We use this to check that a buffer we have to fontify still exists.
+ (defun buffer-live-p (object)
+ "Return non-nil if OBJECT is an editor buffer that has not been deleted."
+ (and (bufferp object) (buffer-name object))))
+
(unless (fboundp 'get-buffer-window-list)
;; We use this to get all windows showing a buffer we have to fontify.
(defun get-buffer-window-list (buffer &optional minibuf frame)
(push window windows))))
minibuf frame)
windows)))
+
+(unless (fboundp 'current-message)
+ (defun current-message ()
+ ""))
\f
;; Install ourselves:
HCoop / bpt / emacs.git / blobdiff