-;;; isearch.el --- incremental search minor mode.
+;;; isearch.el --- incremental search minor mode
-;; Copyright (C) 1992, 93, 94, 95, 96, 97, 1999, 2000, 2001
-;; Free Software Foundation, Inc.
+;; Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1999,
+;; 2000, 2001, 2003, 2004 Free Software Foundation, Inc.
;; Author: Daniel LaLiberte <liberte@cs.uiuc.edu>
;; Maintainer: FSF
;; keep the behavior. No point in forcing nonincremental search until
;; the last possible moment.
-;; TODO
-;; - Integrate the emacs 19 generalized command history.
-;; - Think about incorporating query-replace.
-;; - Hooks and options for failed search.
-
-;;; Change Log:
-
-;; Changes before those recorded in ChangeLog:
-
-;; Revision 1.4 92/09/14 16:26:02 liberte
-;; Added prefix args to isearch-forward, etc. to switch between
-;; string and regular expression searching.
-;; Added some support for lemacs.
-;; Added general isearch-highlight option - but only for lemacs so far.
-;; Added support for frame switching in emacs 19.
-;; Added word search option to isearch-edit-string.
-;; Renamed isearch-quit to isearch-abort.
-;; Numerous changes to comments and doc strings.
-;;
-;; Revision 1.3 92/06/29 13:10:08 liberte
-;; Moved modal isearch-mode handling into isearch-mode.
-;; Got rid of buffer-local isearch variables.
-;; isearch-edit-string used by ring adjustments, completion, and
-;; nonincremental searching. C-s and C-r are additional exit commands.
-;; Renamed all regex to regexp.
-;; Got rid of found-start and found-point globals.
-;; Generalized handling of upper-case chars.
-
-;; Revision 1.2 92/05/27 11:33:57 liberte
-;; Emacs version 19 has a search ring, which is supported here.
-;; Other fixes found in the version 19 isearch are included here.
-;;
-;; Also see variables search-caps-disable-folding,
-;; search-nonincremental-instead, search-whitespace-regexp, and
-;; commands isearch-toggle-regexp, isearch-edit-string.
-;;
-;; semi-modal isearching is supported.
-
-;; Changes for 1.1
-;; 3/18/92 Fixed invalid-regexp.
-;; 3/18/92 Fixed yanking in regexps.
-
;;; Code:
\f
-;;; Some additional options and constants.
+;; Some additional options and constants.
(defgroup isearch nil
"Incremental search minor mode."
:type 'boolean
:group 'isearch)
-(defcustom search-whitespace-regexp "\\s-+"
+(defcustom search-whitespace-regexp "\\(?:\\s-+\\)"
"*If non-nil, regular expression to match a sequence of whitespace chars.
This applies to regular expression incremental search.
-You might want to use something like \"[ \\t\\r\\n]+\" instead.
-In the Customization buffer, that is `[' followed by a space,
-a tab, a carriage return (control-M), a newline, and `]+'."
+You might want to use something like \"\\\\(?:[ \\t\\r\\n]+\\\\)\" instead.
+In the Customization buffer, that is `\\(?:[' followed by a space,
+a tab, a carriage return (control-M), a newline, and `]+\\)'."
:type 'regexp
:group 'isearch)
If the value is `open', if the text matched is made invisible by
an overlay having an `invisible' property and that overlay has a property
`isearch-open-invisible', then incremental search will show the contents.
-\(This applies when using `outline.el' and `hideshow.el'.)"
+\(This applies when using `outline.el' and `hideshow.el'.)
+See also `reveal-mode' if you want overlays to automatically be opened
+whenever point is in one of them."
:type '(choice (const :tag "Match hidden text" t)
(const :tag "Open overlays" open)
(const :tag "Don't match hidden text" nil))
This variable makes a difference when `search-invisible' is set to `open'.
It means that after search makes some invisible text visible
to show the match, it makes the text invisible again when the match moves.
-Ordinarily the text becomes invisible again at the end of the search."
- :type 'boolean
+Ordinarily the text becomes invisible again at the end of the search."
+ :type 'boolean
+ :group 'isearch)
+
+(defcustom isearch-resume-in-command-history nil
+ "*If non-nil, `isearch-resume' commands are added to the command history.
+This allows you to resume earlier isearch sessions through the
+command history."
+ :type 'boolean
:group 'isearch)
(defvar isearch-mode-hook nil
(defvar isearch-mode-end-hook nil
"Function(s) to call after terminating an incremental search.")
-;;; Search ring.
+(defvar isearch-wrap-function nil
+ "Function to call to wrap the search when search is failed.
+If nil, move point to the beginning of the buffer for a forward search,
+or to the end of the buffer for a backward search.")
+
+(defvar isearch-push-state-function nil
+ "Function to save a function restoring the mode-specific isearch state
+to the search status stack.")
+
+;; Search ring.
(defvar search-ring nil
"List of search string sequences.")
:type 'boolean
:group 'isearch)
-;;; Define isearch-mode keymap.
+;; Define isearch-mode keymap.
(defvar isearch-mode-map
(let* ((i 0)
(map (make-keymap)))
- (or (vectorp (nth 1 map))
- (char-table-p (nth 1 map))
+ (or (char-table-p (nth 1 map))
(error "The initialization of isearch-mode-map must be updated"))
;; Make all multibyte characters search for themselves.
- (let ((l (generic-character-list))
- (table (nth 1 map)))
- (while l
- (set-char-table-default table (car l) 'isearch-printing-char)
- (setq l (cdr l))))
- ;; Make function keys, etc, exit the search.
+ (set-char-table-range (nth 1 map) (cons #x100 (max-char))
+ 'isearch-printing-char)
+ ;; Make function keys, etc, which aren't bound to a scrolling-function
+ ;; exit the search.
(define-key map [t] 'isearch-other-control-char)
;; Control chars, by default, end isearch mode transparently.
- ;; We need these explicit definitions because, in a dense keymap,
+ ;; We need these explicit definitions because, in a dense keymap,
;; the binding for t does not affect characters.
;; We use a dense keymap to save space.
(while (< i ?\ )
(error "Inconsistency in isearch.el"))
(define-key map "\e\e\e" 'isearch-cancel)
(define-key map [escape escape escape] 'isearch-cancel)
-
+
(define-key map "\C-q" 'isearch-quote-char)
(define-key map "\r" 'isearch-exit)
(define-key map "\t" 'isearch-printing-char)
(define-key map " " 'isearch-whitespace-chars)
(define-key map [?\S-\ ] 'isearch-whitespace-chars)
-
- (define-key map "\C-w" 'isearch-yank-word)
- (define-key map "\C-y" 'isearch-yank-line)
- ;; Define keys for regexp chars * ? |.
+ (define-key map "\C-w" 'isearch-yank-word-or-char)
+ (define-key map "\M-\C-w" 'isearch-del-char)
+ (define-key map "\M-\C-y" 'isearch-yank-char)
+ (define-key map "\C-y" 'isearch-yank-line)
+
+ ;; Define keys for regexp chars * ? } |.
;; Nothing special for + because it matches at least once.
(define-key map "*" 'isearch-*-char)
(define-key map "?" 'isearch-*-char)
+ (define-key map "}" 'isearch-}-char)
(define-key map "|" 'isearch-|-char)
-;;; Turned off because I find I expect to get the global definition--rms.
-;;; ;; Instead bind C-h to special help command for isearch-mode.
-;;; (define-key map "\C-h" 'isearch-mode-help)
+ ;; Turned off because I find I expect to get the global definition--rms.
+ ;; ;; Instead bind C-h to special help command for isearch-mode.
+ ;; (define-key map "\C-h" 'isearch-mode-help)
(define-key map "\M-n" 'isearch-ring-advance)
(define-key map "\M-p" 'isearch-ring-retreat)
(define-key map [delete-frame] nil)
(define-key map [iconify-frame] nil)
(define-key map [make-frame-visible] nil)
+ (define-key map [mouse-movement] nil)
;; For searching multilingual text.
(define-key map "\C-\\" 'isearch-toggle-input-method)
(define-key map "\C-^" 'isearch-toggle-specified-input-method)
;; People expect to be able to paste with the mouse.
- (define-key map [mouse-2] #'isearch-mouse-yank)
+ (define-key map [mouse-2] #'isearch-mouse-2)
(define-key map [down-mouse-2] nil)
;; Some bindings you may want to put in your isearch-mode-hook.
(define-key map "\M-r" 'isearch-toggle-regexp)
(define-key map "\M-e" 'isearch-edit-string)
+ (define-key map [?\M-%] 'isearch-query-replace)
+ (define-key map [?\C-\M-%] 'isearch-query-replace-regexp)
+
map)
"Keymap for `isearch-mode'.")
(defvar minibuffer-local-isearch-map
(let ((map (make-sparse-keymap)))
(set-keymap-parent map minibuffer-local-map)
- (define-key map "\r" 'isearch-nonincremental-exit-minibuffer)
- (define-key map "\M-n" 'isearch-ring-advance-edit)
- (define-key map "\M-p" 'isearch-ring-retreat-edit)
+ (define-key map "\r" 'isearch-nonincremental-exit-minibuffer)
+ (define-key map "\M-n" 'isearch-ring-advance-edit)
+ (define-key map [next] 'isearch-ring-advance-edit)
+ (define-key map [down] 'isearch-ring-advance-edit)
+ (define-key map "\M-p" 'isearch-ring-retreat-edit)
+ (define-key map [prior] 'isearch-ring-retreat-edit)
+ (define-key map [up] 'isearch-ring-retreat-edit)
(define-key map "\M-\t" 'isearch-complete-edit)
- (define-key map "\C-s" 'isearch-forward-exit-minibuffer)
- (define-key map "\C-r" 'isearch-reverse-exit-minibuffer)
+ (define-key map "\C-s" 'isearch-forward-exit-minibuffer)
+ (define-key map "\C-r" 'isearch-reverse-exit-minibuffer)
+ (define-key map "\C-f" 'isearch-yank-char-in-minibuffer)
+ (define-key map [right] 'isearch-yank-char-in-minibuffer)
map)
"Keymap for editing isearch strings in the minibuffer.")
(defvar isearch-forward nil) ; Searching in the forward direction.
(defvar isearch-regexp nil) ; Searching for a regexp.
(defvar isearch-word nil) ; Searching for words.
+(defvar isearch-hidden nil) ; Non-nil if the string exists but is invisible.
+
+(defvar isearch-cmds nil
+ "Stack of search status sets.
+Each set is a vector of the form:
+ [STRING MESSAGE POINT SUCCESS FORWARD OTHER-END WORD
+ INVALID-REGEXP WRAPPED BARRIER WITHIN-BRACKETS CASE-FOLD-SEARCH]")
-(defvar isearch-cmds nil) ; Stack of search status sets.
(defvar isearch-string "") ; The current search string.
(defvar isearch-message "") ; text-char-description version of isearch-string
(defvar isearch-wrapped nil) ; Searching restarted from the top (bottom).
(defvar isearch-barrier 0)
(defvar isearch-just-started nil)
+(defvar isearch-start-hscroll 0) ; hscroll when starting the search.
; case-fold-search while searching.
; either nil, t, or 'yes. 'yes means the same as t except that mixed
; case in the search string is ignored.
(defvar isearch-case-fold-search nil)
+(defvar isearch-last-case-fold-search nil)
+
;; Used to save default value while isearch is active
(defvar isearch-original-minibuffer-message-timeout nil)
(defvar isearch-adjusted nil)
(defvar isearch-slow-terminal-mode nil)
-;;; If t, using a small window.
+;; If t, using a small window.
(defvar isearch-small-window nil)
(defvar isearch-opoint 0)
-;;; The window configuration active at the beginning of the search.
+;; The window configuration active at the beginning of the search.
(defvar isearch-window-configuration nil)
;; Flag to indicate a yank occurred, so don't move the cursor.
(defvar isearch-yank-flag nil)
-;;; A function to be called after each input character is processed.
-;;; (It is not called after characters that exit the search.)
-;;; It is only set from an optional argument to `isearch-mode'.
+;; A function to be called after each input character is processed.
+;; (It is not called after characters that exit the search.)
+;; It is only set from an optional argument to `isearch-mode'.
(defvar isearch-op-fun nil)
-;;; Is isearch-mode in a recursive edit for modal searching.
+;; Is isearch-mode in a recursive edit for modal searching.
(defvar isearch-recursive-edit nil)
-;;; Should isearch be terminated after doing one search?
+;; Should isearch be terminated after doing one search?
(defvar isearch-nonincremental nil)
;; New value of isearch-forward after isearch-edit-string.
;; isearch is invoked.
(defvar isearch-input-method-local-p nil)
-;; Value of `signal-hook-function' before setting our own.
-(defvar isearch-old-signal-hook nil)
-
;; Minor-mode-alist changes - kind of redundant with the
;; echo area, but if isearching in multiple windows, it can be useful.
(define-key global-map "\C-r" 'isearch-backward)
(define-key esc-map "\C-r" 'isearch-backward-regexp)
-;;; Entry points to isearch-mode.
+;; Entry points to isearch-mode.
(defun isearch-forward (&optional regexp-p no-recursive-edit)
"\
With a prefix argument, do an incremental regular expression search instead.
\\<isearch-mode-map>
As you type characters, they add to the search string and are found.
-The following non-printing keys are bound in `isearch-mode-map'.
+The following non-printing keys are bound in `isearch-mode-map'.
-Type \\[isearch-delete-char] to cancel characters from end of search string.
+Type \\[isearch-delete-char] to cancel last input item from end of search string.
Type \\[isearch-exit] to exit, leaving point at location found.
Type LFD (C-j) to match end of line.
Type \\[isearch-repeat-forward] to search again forward,\
\\[isearch-repeat-backward] to search again backward.
-Type \\[isearch-yank-word] to yank word from buffer onto end of search\
+Type \\[isearch-yank-word-or-char] to yank word from buffer onto end of search\
+ string and search for it.
+Type \\[isearch-del-char] to delete character from end of search string.
+Type \\[isearch-yank-char] to yank char from buffer onto end of search\
string and search for it.
Type \\[isearch-yank-line] to yank rest of line onto end of search string\
and search for it.
\\[isearch-abort] when search is successful aborts and moves point to\
starting point.
+Type \\[isearch-toggle-case-fold] to toggle search case-sensitivity.
+Type \\[isearch-toggle-regexp] to toggle regular-expression mode.
+Type \\[isearch-edit-string] to edit the search string in the minibuffer.
+
Also supported is a search ring of the previous 16 search strings.
Type \\[isearch-ring-advance] to search for the next item in the search ring.
Type \\[isearch-ring-retreat] to search for the previous item in the search\
ring.
Type \\[isearch-complete] to complete the search string using the search ring.
-The above keys, bound in `isearch-mode-map', are often controlled by
- options; do M-x apropos on search-.* to find them.
+If an input method is turned on in the current buffer, that input
+method is also active while you are typing characters to search. To
+toggle the input method, type \\[isearch-toggle-input-method]. It
+also toggles the input method in the current buffer.
+
+To use a different input method for searching, type
+\\[isearch-toggle-specified-input-method], and specify an input method
+you want to use.
+
+The above keys, bound in `isearch-mode-map', are often controlled by
+ options; do \\[apropos] on search-.* to find them.
Other control and meta characters terminate the search
and are then executed normally (depending on `search-exit-option').
Likewise for function keys and mouse button events.
;;(defvar isearch-commands '(isearch-forward isearch-backward
;; isearch-forward-regexp isearch-backward-regexp)
;; "List of commands for which isearch-mode does not recursive-edit.")
-
+
(defun isearch-mode (forward &optional regexp op-fun recursive-edit word-p)
"Start isearch minor mode. Called by `isearch-forward', etc.
isearch-regexp regexp
isearch-word word-p
isearch-op-fun op-fun
+ isearch-last-case-fold-search isearch-case-fold-search
isearch-case-fold-search case-fold-search
isearch-string ""
isearch-message ""
isearch-within-brackets nil
isearch-slow-terminal-mode (and (<= baud-rate search-slow-speed)
(> (window-height)
- (* 4 search-slow-window-lines)))
+ (* 4
+ (abs search-slow-window-lines))))
isearch-other-end nil
isearch-small-window nil
isearch-just-started t
+ isearch-start-hscroll (window-hscroll)
isearch-opoint (point)
search-ring-yank-pointer nil
;; Maybe make minibuffer frame visible and/or raise it.
(let ((frame (window-frame (minibuffer-window))))
- (if (not (memq (frame-live-p frame) '(nil t)))
- (progn
- (make-frame-visible frame)
- (if minibuffer-auto-raise
- (raise-frame frame)))))
+ (unless (memq (frame-live-p frame) '(nil t))
+ (unless (frame-visible-p frame)
+ (make-frame-visible frame))
+ (if minibuffer-auto-raise
+ (raise-frame frame))))
(setq isearch-mode " Isearch") ;; forward? regexp?
(force-mode-line-update)
(run-hooks 'isearch-mode-hook)
(add-hook 'mouse-leave-buffer-hook 'isearch-done)
- (setq isearch-old-signal-hook signal-hook-function
- signal-hook-function 'isearch-done)
+ (add-hook 'kbd-macro-termination-hook 'isearch-done)
- ;; isearch-mode can be made modal (in the sense of not returning to
- ;; the calling function until searching is completed) by entering
+ ;; isearch-mode can be made modal (in the sense of not returning to
+ ;; the calling function until searching is completed) by entering
;; a recursive-edit and exiting it when done isearching.
(if recursive-edit
(let ((isearch-recursive-edit t))
;; Some high level utilities. Others below.
(defun isearch-update ()
- ;; Called after each command to update the display.
- (if (null unread-command-events)
+ ;; Called after each command to update the display.
+ (if (and (null unread-command-events)
+ (null executing-kbd-macro))
(progn
- (if (not (input-pending-p))
- (isearch-message))
- (if (and isearch-slow-terminal-mode
- (not (or isearch-small-window
- (pos-visible-in-window-p))))
- (let ((found-point (point)))
- (setq isearch-small-window t)
- (move-to-window-line 0)
- (let ((window-min-height 1))
- (split-window nil (if (< search-slow-window-lines 0)
- (1+ (- search-slow-window-lines))
- (- (window-height)
- (1+ search-slow-window-lines)))))
- (if (< search-slow-window-lines 0)
- (progn (vertical-motion (- 1 search-slow-window-lines))
- (set-window-start (next-window) (point))
- (set-window-hscroll (next-window)
- (window-hscroll))
- (set-window-hscroll (selected-window) 0))
- (other-window 1))
- (goto-char found-point)))
+ (if (not (input-pending-p))
+ (isearch-message))
+ (if (and isearch-slow-terminal-mode
+ (not (or isearch-small-window
+ (pos-visible-in-window-p))))
+ (let ((found-point (point)))
+ (setq isearch-small-window t)
+ (move-to-window-line 0)
+ (let ((window-min-height 1))
+ (split-window nil (if (< search-slow-window-lines 0)
+ (1+ (- search-slow-window-lines))
+ (- (window-height)
+ (1+ search-slow-window-lines)))))
+ (if (< search-slow-window-lines 0)
+ (progn (vertical-motion (- 1 search-slow-window-lines))
+ (set-window-start (next-window) (point))
+ (set-window-hscroll (next-window)
+ (window-hscroll))
+ (set-window-hscroll (selected-window) 0))
+ (other-window 1))
+ (goto-char found-point))
+ ;; Keep same hscrolling as at the start of the search when possible
+ (let ((current-scroll (window-hscroll)))
+ (set-window-hscroll (selected-window) isearch-start-hscroll)
+ (unless (pos-visible-in-window-p)
+ (set-window-hscroll (selected-window) current-scroll))))
(if isearch-other-end
- (if (< isearch-other-end (point)) ; isearch-forward?
- (isearch-highlight isearch-other-end (point))
- (isearch-highlight (point) isearch-other-end))
- (isearch-dehighlight nil))
- ))
+ (if (< isearch-other-end (point)) ; isearch-forward?
+ (isearch-highlight isearch-other-end (point))
+ (isearch-highlight (point) isearch-other-end))
+ (isearch-dehighlight nil))
+ ))
(setq ;; quit-flag nil not for isearch-mode
isearch-adjusted nil
isearch-yank-flag nil)
(setq disable-point-adjustment t))
(defun isearch-done (&optional nopush edit)
- (let ((command `(isearch-resume ,isearch-string ,isearch-regexp
- ,isearch-word ,isearch-forward
- ,isearch-message
- ,isearch-case-fold-search)))
- (unless (equal (car command-history) command)
- (setq command-history (cons command command-history))))
+ (if isearch-resume-in-command-history
+ (let ((command `(isearch-resume ,isearch-string ,isearch-regexp
+ ,isearch-word ,isearch-forward
+ ,isearch-message
+ ',isearch-case-fold-search)))
+ (unless (equal (car command-history) command)
+ (setq command-history (cons command command-history)))))
(remove-hook 'mouse-leave-buffer-hook 'isearch-done)
- (setq signal-hook-function isearch-old-signal-hook)
+ (remove-hook 'kbd-macro-termination-hook 'isearch-done)
+ (setq isearch-lazy-highlight-start nil)
;; Called by all commands that terminate isearch-mode.
;; If NOPUSH is non-nil, we don't push the string on the search ring.
(defun isearch-update-ring (string &optional regexp)
"Add STRING to the beginning of the search ring.
REGEXP says which ring to use."
- (if regexp
+ (if regexp
(if (or (null regexp-search-ring)
(not (string= string (car regexp-search-ring))))
(progn
- (setq regexp-search-ring
- (cons string regexp-search-ring))
+ (push string regexp-search-ring)
(if (> (length regexp-search-ring) regexp-search-ring-max)
(setcdr (nthcdr (1- search-ring-max) regexp-search-ring)
nil))))
(if (or (null search-ring)
(not (string= string (car search-ring))))
(progn
- (setq search-ring (cons string search-ring))
+ (push string search-ring)
(if (> (length search-ring) search-ring-max)
(setcdr (nthcdr (1- search-ring-max) search-ring) nil))))))
-;;; Switching buffers should first terminate isearch-mode.
-;;; ;; For Emacs 19, the frame switch event is handled.
-;;; (defun isearch-switch-frame-handler ()
-;;; (interactive) ;; Is this necessary?
-;;; ;; First terminate isearch-mode.
-;;; (isearch-done)
-;;; (isearch-clean-overlays)
-;;; (handle-switch-frame (car (cdr last-command-char))))
+;; Switching buffers should first terminate isearch-mode.
+;; ;; For Emacs 19, the frame switch event is handled.
+;; (defun isearch-switch-frame-handler ()
+;; (interactive) ;; Is this necessary?
+;; ;; First terminate isearch-mode.
+;; (isearch-done)
+;; (isearch-clean-overlays)
+;; (handle-switch-frame (car (cdr last-command-char))))
+
+\f
+;; The search status structure and stack.
+
+(defsubst isearch-string-state (frame)
+ "Return the search string in FRAME."
+ (aref frame 0))
+(defsubst isearch-message-state (frame)
+ "Return the search string to display to the user in FRAME."
+ (aref frame 1))
+(defsubst isearch-point-state (frame)
+ "Return the point in FRAME."
+ (aref frame 2))
+(defsubst isearch-success-state (frame)
+ "Return the success flag in FRAME."
+ (aref frame 3))
+(defsubst isearch-forward-state (frame)
+ "Return the searching-forward flag in FRAME."
+ (aref frame 4))
+(defsubst isearch-other-end-state (frame)
+ "Return the other end of the match in FRAME."
+ (aref frame 5))
+(defsubst isearch-word-state (frame)
+ "Return the search-by-word flag in FRAME."
+ (aref frame 6))
+(defsubst isearch-invalid-regexp-state (frame)
+ "Return the regexp error message in FRAME, or nil if its regexp is valid."
+ (aref frame 7))
+(defsubst isearch-wrapped-state (frame)
+ "Return the search-wrapped flag in FRAME."
+ (aref frame 8))
+(defsubst isearch-barrier-state (frame)
+ "Return the barrier value in FRAME."
+ (aref frame 9))
+(defsubst isearch-within-brackets-state (frame)
+ "Return the in-character-class flag in FRAME."
+ (aref frame 10))
+(defsubst isearch-case-fold-search-state (frame)
+ "Return the case-folding flag in FRAME."
+ (aref frame 11))
+(defsubst isearch-pop-fun-state (frame)
+ "Return the function restoring the mode-specific isearch state in FRAME."
+ (aref frame 12))
+
+(defun isearch-top-state ()
+ (let ((cmd (car isearch-cmds)))
+ (setq isearch-string (isearch-string-state cmd)
+ isearch-message (isearch-message-state cmd)
+ isearch-success (isearch-success-state cmd)
+ isearch-forward (isearch-forward-state cmd)
+ isearch-other-end (isearch-other-end-state cmd)
+ isearch-word (isearch-word-state cmd)
+ isearch-invalid-regexp (isearch-invalid-regexp-state cmd)
+ isearch-wrapped (isearch-wrapped-state cmd)
+ isearch-barrier (isearch-barrier-state cmd)
+ isearch-within-brackets (isearch-within-brackets-state cmd)
+ isearch-case-fold-search (isearch-case-fold-search-state cmd))
+ (if (functionp (isearch-pop-fun-state cmd))
+ (funcall (isearch-pop-fun-state cmd) cmd))
+ (goto-char (isearch-point-state cmd))))
+
+(defun isearch-pop-state ()
+ (setq isearch-cmds (cdr isearch-cmds))
+ (isearch-top-state))
+
+(defun isearch-push-state ()
+ (setq isearch-cmds
+ (cons (vector isearch-string isearch-message (point)
+ isearch-success isearch-forward isearch-other-end
+ isearch-word
+ isearch-invalid-regexp isearch-wrapped isearch-barrier
+ isearch-within-brackets isearch-case-fold-search
+ (if isearch-push-state-function
+ (funcall isearch-push-state-function)))
+ isearch-cmds)))
\f
;; Commands active while inside of the isearch minor mode.
search and `search-nonincremental-instead' is non-nil, do a
nonincremental search instead via `isearch-edit-string'."
(interactive)
- (if (and search-nonincremental-instead
+ (if (and search-nonincremental-instead
(= 0 (length isearch-string)))
(let ((isearch-nonincremental t))
(isearch-edit-string)))
\\[isearch-ring-retreat-edit] to replace the search string with the previous item in the search ring.
\\[isearch-complete-edit] to complete the search string using the search ring.
\\<isearch-mode-map>
-If first char entered is \\[isearch-yank-word], then do word search instead."
+If first char entered is \\[isearch-yank-word-or-char], then do word search instead."
;; This code is very hairy for several reasons, explained in the code.
;; Mainly, isearch-mode must be terminated while editing and then restarted.
)
;; Actually terminate isearching until editing is done.
- ;; This is so that the user can do anything without failure,
+ ;; This is so that the user can do anything without failure,
;; like switch buffers and start another isearch, and return.
(condition-case err
(isearch-done t t)
(isearch-message) ;; for read-char
(unwind-protect
- (let* (;; Why does following read-char echo?
+ (let* (;; Why does following read-char echo?
;;(echo-keystrokes 0) ;; not needed with above message
(e (let ((cursor-in-echo-area t))
(read-event)))
;; Word search does not apply (yet) to regexp searches,
;; no check is made here.
(message (isearch-message-prefix nil nil t))
- (if (eq 'isearch-yank-word
- (lookup-key isearch-mode-map (vector e)))
+ (if (memq (lookup-key isearch-mode-map (vector e))
+ '(isearch-yank-word
+ isearch-yank-word-or-char))
(setq isearch-word t;; so message-prefix is right
isearch-new-word t)
(cancel-kbd-macro-events)
(mapconcat 'isearch-text-char-description
isearch-new-string "")))
;; Always resume isearching by restarting it.
- (isearch-mode isearch-forward
- isearch-regexp
- isearch-op-fun
+ (isearch-mode isearch-forward
+ isearch-regexp
+ isearch-op-fun
nil
isearch-word)
(setq isearch-string (or (car (if isearch-regexp
regexp-search-ring
search-ring))
- ""))
+ "")
+
+ isearch-message
+ (mapconcat 'isearch-text-char-description
+ isearch-string ""))
;; This used to set the last search string,
;; but I think it is not right to do that here.
;; Only the string actually used should be saved.
;; Reinvoke the pending search.
(isearch-search)
(isearch-update)
- (if isearch-nonincremental
+ (if isearch-nonincremental
(progn
;; (sit-for 1) ;; needed if isearch-done does: (message "")
(isearch-done))))
(defun isearch-cancel ()
"Terminate the search and go back to the starting point."
(interactive)
+ (if (functionp (isearch-pop-fun-state (car (last isearch-cmds))))
+ (funcall (isearch-pop-fun-state (car (last isearch-cmds)))
+ (car (last isearch-cmds))))
(goto-char isearch-opoint)
- (isearch-done t)
+ (isearch-done t) ; exit isearch
(isearch-clean-overlays)
- (signal 'quit nil)) ; and pass on quit signal
+ (signal 'quit nil)) ; and pass on quit signal
(defun isearch-abort ()
"Abort incremental search mode if searching is successful, signaling quit.
(if isearch-success
;; If search is successful, move back to starting point
;; and really do quit.
- (progn (goto-char isearch-opoint)
- (setq isearch-success nil)
- (isearch-done t) ; exit isearch
- (isearch-clean-overlays)
- (signal 'quit nil)) ; and pass on quit signal
+ (progn
+ (setq isearch-success nil)
+ (isearch-cancel))
;; If search is failing, or has an incomplete regexp,
;; rub out until it is once more successful.
(while (or (not isearch-success) isearch-invalid-regexp)
(or (if isearch-regexp
(car regexp-search-ring)
(car search-ring))
- "")
+ (error "No previous search string"))
isearch-message
(mapconcat 'isearch-text-char-description
- isearch-string ""))
+ isearch-string "")
+ isearch-case-fold-search isearch-last-case-fold-search)
;; If already have what to search for, repeat it.
(or isearch-success
(progn
- (goto-char (if isearch-forward (point-min) (point-max)))
+ (if isearch-wrap-function
+ (funcall isearch-wrap-function)
+ (goto-char (if isearch-forward (point-min) (point-max))))
(setq isearch-wrapped t))))
;; C-s in reverse or C-r in forward, change direction.
(setq isearch-forward (not isearch-forward)))
(if (equal isearch-string "")
(setq isearch-success t)
- (if (and isearch-success (equal (match-end 0) (match-beginning 0))
+ (if (and isearch-success
+ (equal (point) isearch-other-end)
(not isearch-just-started))
;; If repeating a search that found
;; an empty string, ensure we advance.
(interactive)
(setq isearch-regexp (not isearch-regexp))
(if isearch-regexp (setq isearch-word nil))
+ (setq isearch-success t isearch-adjusted t)
(isearch-update))
(defun isearch-toggle-case-fold ()
(isearch-message-prefix nil nil isearch-nonincremental)
isearch-message
(if isearch-case-fold-search "in" "")))
- (setq isearch-adjusted t)
+ (setq isearch-success t isearch-adjusted t)
(sit-for 1)
(isearch-update))
+(defun isearch-query-replace (&optional regexp-flag)
+ "Start query-replace with string to replace from last search string."
+ (interactive)
+ (barf-if-buffer-read-only)
+ (if regexp-flag (setq isearch-regexp t))
+ (let ((case-fold-search isearch-case-fold-search))
+ (isearch-done)
+ (isearch-clean-overlays)
+ (if (and (< isearch-other-end (point))
+ (not (and transient-mark-mode mark-active
+ (< isearch-opoint (point)))))
+ (goto-char isearch-other-end))
+ (set query-replace-from-history-variable
+ (cons isearch-string
+ (symbol-value query-replace-from-history-variable)))
+ (perform-replace
+ isearch-string
+ (query-replace-read-to
+ isearch-string
+ (if isearch-regexp "Query replace regexp" "Query replace")
+ isearch-regexp)
+ t isearch-regexp isearch-word nil nil
+ (if (and transient-mark-mode mark-active) (region-beginning))
+ (if (and transient-mark-mode mark-active) (region-end)))))
+
+(defun isearch-query-replace-regexp ()
+ "Start query-replace-regexp with string to replace from last search string."
+ (interactive)
+ (isearch-query-replace t))
+
+\f
(defun isearch-delete-char ()
- "Discard last input item and move point back.
+ "Discard last input item and move point back.
If no previous match was done, just beep."
(interactive)
(if (null (cdr isearch-cmds))
(isearch-pop-state))
(isearch-update))
+(defun isearch-del-char (&optional arg)
+ "Delete character from end of search string and search again.
+If search string is empty, just beep."
+ (interactive "p")
+ (if (= 0 (length isearch-string))
+ (ding)
+ (setq isearch-string (substring isearch-string 0 (- (or arg 1)))
+ isearch-message (mapconcat 'isearch-text-char-description
+ isearch-string "")
+ ;; Don't move cursor in reverse search.
+ isearch-yank-flag t))
+ (isearch-search-and-update))
(defun isearch-yank-string (string)
"Pull STRING into search string."
(interactive)
(isearch-yank-string (x-get-selection)))
-(defun isearch-mouse-yank (click arg)
- "Yank with the mouse in Isearch mode.
+
+(defun isearch-mouse-2 (click)
+ "Handle mouse-2 in Isearch mode.
For a click in the echo area, invoke `isearch-yank-x-selection'.
-Otherwise invoke `mouse-yank-at-click'."
- (interactive "e\nP")
- (let ((w (posn-window (event-start click))))
+Otherwise invoke whatever mouse-2 is bound to outside of Isearch."
+ (interactive "e")
+ (let* ((w (posn-window (event-start click)))
+ (overriding-terminal-local-map nil)
+ (key (vector (event-basic-type click)))
+ ;; FIXME: `key-binding' should accept an event as argument
+ ;; and do all the overlay/text-properties lookup etc...
+ (binding (with-current-buffer
+ (if (window-live-p w) (window-buffer w) (current-buffer))
+ (key-binding key))))
(if (and (window-minibuffer-p w)
(not (minibuffer-window-active-p w))) ; in echo area
(isearch-yank-x-selection)
- (mouse-yank-at-click click arg))))
+ (when (functionp binding)
+ (call-interactively binding)))))
-(defun isearch-yank-word ()
- "Pull next word from buffer into search string."
- (interactive)
+
+(defun isearch-yank-internal (jumpform)
+ "Pull the text from point to the point reached by JUMPFORM.
+JUMPFORM is a lambda expression that takes no arguments and returns a
+buffer position, possibly having moved point to that position. For
+example, it might move point forward by a word and return point, or it
+might return the position of the end of the line."
(isearch-yank-string
(save-excursion
(and (not isearch-forward) isearch-other-end
(goto-char isearch-other-end))
- (buffer-substring-no-properties
- (point) (progn (forward-word 1) (point))))))
+ (buffer-substring-no-properties (point) (funcall jumpform)))))
+
+(defun isearch-yank-char-in-minibuffer (&optional arg)
+ "Pull next character from buffer into end of search string in minibuffer."
+ (interactive "p")
+ (if (eobp)
+ (insert
+ (save-excursion
+ (set-buffer (cadr (buffer-list)))
+ (buffer-substring-no-properties
+ (point) (progn (forward-char arg) (point)))))
+ (forward-char arg)))
+
+(defun isearch-yank-char (&optional arg)
+ "Pull next character from buffer into search string."
+ (interactive "p")
+ (isearch-yank-internal (lambda () (forward-char arg) (point))))
+
+(defun isearch-yank-word-or-char ()
+ "Pull next character or word from buffer into search string."
+ (interactive)
+ (isearch-yank-internal
+ (lambda ()
+ (if (or (= (char-syntax (or (char-after) 0)) ?w)
+ (= (char-syntax (or (char-after (1+ (point))) 0)) ?w))
+ (forward-word 1)
+ (forward-char 1)) (point))))
+
+(defun isearch-yank-word ()
+ "Pull next word from buffer into search string."
+ (interactive)
+ (isearch-yank-internal (lambda () (forward-word 1) (point))))
(defun isearch-yank-line ()
"Pull rest of line from buffer into search string."
(interactive)
- (isearch-yank-string
- (save-excursion
- (and (not isearch-forward) isearch-other-end
- (goto-char isearch-other-end))
- (buffer-substring-no-properties (point) (line-end-position)))))
+ (isearch-yank-internal 'line-end-position))
(defun isearch-search-and-update ()
;; Do the search and update the display.
- (if (and (not isearch-success)
- ;; unsuccessful regexp search may become
- ;; successful by addition of characters which
- ;; make isearch-string valid
- (not isearch-regexp))
- nil
+ (when (or isearch-success
+ ;; Unsuccessful regexp search may become successful by
+ ;; addition of characters which make isearch-string valid
+ isearch-regexp
+ ;; If the string was found but was completely invisible,
+ ;; it might now be partly visible, so try again.
+ (prog1 isearch-hidden (setq isearch-hidden nil)))
;; In reverse search, adding stuff at
;; the end may cause zero or many more chars to be
;; matched, in the string following point.
(regexp-quote isearch-string))))
(error nil))
(or isearch-yank-flag
- (<= (match-end 0)
+ (<= (match-end 0)
(min isearch-opoint isearch-barrier))))
(progn
- (setq isearch-success t
+ (setq isearch-success t
isearch-invalid-regexp nil
isearch-within-brackets nil
isearch-other-end (match-end 0))
;; Not regexp, not reverse, or no match at point.
(if (and isearch-other-end (not isearch-adjusted))
(goto-char (if isearch-forward isearch-other-end
- (min isearch-opoint
- isearch-barrier
+ (min isearch-opoint
+ isearch-barrier
(1+ isearch-other-end)))))
(isearch-search)
))
(isearch-update))
-;; *, ?, and | chars can make a regexp more liberal.
+;; *, ?, }, and | chars can make a regexp more liberal.
;; They can make a regexp match sooner or make it succeed instead of failing.
;; So go back to place last successful search started
;; or to the last ^S/^R (barrier), whichever is nearer.
;; + needs no special handling because the string must match at least once.
+(defun isearch-backslash (str)
+ "Return t if STR ends in an odd number of backslashes."
+ (= (mod (- (length str) (string-match "\\\\*\\'" str)) 2) 1))
+
+(defun isearch-fallback (want-backslash &optional allow-invalid to-barrier)
+ "Return point to previous successful match to allow regexp liberalization.
+\\<isearch-mode-map>
+Respects \\[isearch-repeat-forward] and \\[isearch-repeat-backward] by
+stopping at `isearch-barrier' as needed.
+
+Do nothing if a backslash is escaping the liberalizing character. If
+WANT-BACKSLASH is non-nil, invert this behavior (for \\} and \\|).
+
+Do nothing if regexp has recently been invalid unless optional ALLOW-INVALID
+non-nil.
+
+If optional TO-BARRIER non-nil, ignore previous matches and go exactly to the
+barrier."
+ ;; (eq (not a) (not b)) makes all non-nil values equivalent
+ (when (and isearch-regexp (eq (not (isearch-backslash isearch-string))
+ (not want-backslash))
+ ;; We have to check 2 stack frames because the last might be
+ ;; invalid just because of a backslash.
+ (or (not isearch-invalid-regexp)
+ (not (isearch-invalid-regexp-state (cadr isearch-cmds)))
+ allow-invalid))
+ (if to-barrier
+ (progn (goto-char isearch-barrier)
+ (setq isearch-adjusted t))
+ (let* ((stack isearch-cmds)
+ (previous (cdr stack)) ; lookbelow in the stack
+ (frame (car stack)))
+ ;; Walk down the stack looking for a valid regexp (as of course only
+ ;; they can be the previous successful match); this conveniently
+ ;; removes all bracket-sets and groups that might be in the way, as
+ ;; well as partial \{\} constructs that the code below leaves behind.
+ ;; Also skip over postfix operators -- though horrid,
+ ;; 'ab?\{5,6\}+\{1,2\}*' is perfectly legal.
+ (while (and previous
+ (or (isearch-invalid-regexp-state frame)
+ (let* ((string (isearch-string-state frame))
+ (lchar (aref string (1- (length string)))))
+ ;; The operators aren't always operators; check
+ ;; backslashes. This doesn't handle the case of
+ ;; operators at the beginning of the regexp not
+ ;; being special, but then we should fall back to
+ ;; the barrier anyway because it's all optional.
+ (if (isearch-backslash
+ (isearch-string-state (car previous)))
+ (eq lchar ?\})
+ (memq lchar '(?* ?? ?+))))))
+ (setq stack previous previous (cdr previous) frame (car stack)))
+ (when stack
+ ;; `stack' now refers the most recent valid regexp that is not at
+ ;; all optional in its last term. Now dig one level deeper and find
+ ;; what matched before that.
+ (let ((last-other-end (or (isearch-other-end-state (car previous))
+ isearch-barrier)))
+ (goto-char (if isearch-forward
+ (max last-other-end isearch-barrier)
+ (min last-other-end isearch-barrier)))
+ (setq isearch-adjusted t))))))
+ (isearch-process-search-char last-command-char))
+
+;; * and ? are special when not preceded by \.
(defun isearch-*-char ()
- "Handle * and ? specially in regexps."
+ "Maybe back up to handle * and ? specially in regexps."
(interactive)
- (if isearch-regexp
- (let ((idx (length isearch-string)))
- (while (and (> idx 0)
- (eq (aref isearch-string (1- idx)) ?\\))
- (setq idx (1- idx)))
- (when (= (mod (- (length isearch-string) idx) 2) 0)
- (setq isearch-adjusted t)
- ;; Get the isearch-other-end from before the last search.
- ;; We want to start from there,
- ;; so that we don't retreat farther than that.
- ;; (car isearch-cmds) is after last search;
- ;; (car (cdr isearch-cmds)) is from before it.
- (let ((cs (nth 5 (car (cdr isearch-cmds)))))
- (setq cs (or cs isearch-barrier))
- (goto-char
- (if isearch-forward
- (max cs isearch-barrier)
- (min cs isearch-barrier)))))))
- (isearch-process-search-char last-command-char))
-
+ (isearch-fallback nil))
+
+;; } is special when it is preceded by \.
+(defun isearch-}-char ()
+ "Handle \\} specially in regexps."
+ (interactive)
+ (isearch-fallback t t))
+;; | is special when it is preceded by \.
(defun isearch-|-char ()
- "If in regexp search, jump to the barrier."
+ "If in regexp search, jump to the barrier unless in a group."
(interactive)
- (if isearch-regexp
- (progn
- (setq isearch-adjusted t)
- (goto-char isearch-barrier)))
- (isearch-process-search-char last-command-char))
+ (isearch-fallback t nil t))
+
+(defun isearch-unread-key-sequence (keylist)
+ "Unread the given key-sequence KEYLIST.
+Scroll-bar or mode-line events are processed appropriately."
+ (cancel-kbd-macro-events)
+ (apply 'isearch-unread keylist)
+ ;; If the event was a scroll-bar or mode-line click, the event will have
+ ;; been prefixed by a symbol such as vertical-scroll-bar. We must remove
+ ;; it here, because this symbol will be attached to the event again next
+ ;; time it gets read by read-key-sequence.
+ ;;
+ ;; (Old comment from isearch-other-meta-char: "Note that we don't have to
+ ;; modify the event anymore in 21 because read_key_sequence no longer
+ ;; modifies events to produce fake prefix keys.")
+ (if (and (> (length keylist) 1)
+ (symbolp (car keylist))
+ (listp (cadr keylist))
+ (not (numberp (posn-point
+ (event-start (cadr keylist) )))))
+ (pop unread-command-events)))
+
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;; scrolling within Isearch mode. Alan Mackenzie (acm@muc.de), 2003/2/24
+;;
+;; The idea here is that certain vertical scrolling commands (like C-l
+;; `recenter') should be usable WITHIN Isearch mode. For a command to be
+;; suitable, it must NOT alter the buffer, swap to another buffer or frame,
+;; tamper with isearch's state, or move point. It is unacceptable for the
+;; search string to be scrolled out of the current window. If a command
+;; attempts this, we scroll the text back again.
+;;
+;; We implement this feature with a property called `isearch-scroll'.
+;; If a command's symbol has the value t for this property it is a
+;; scrolling command. The feature needs to be enabled by setting the
+;; customizable variable `isearch-allow-scroll' to a non-nil value.
+;;
+;; The universal argument commands (e.g. C-u) in simple.el are marked
+;; as scrolling commands, and isearch.el has been amended to allow
+;; prefix arguments to be passed through to scrolling commands. Thus
+;; M-0 C-l will scroll point to the top of the window.
+;;
+;; Horizontal scrolling commands are currently not catered for.
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+;; Set the isearch-scroll property on some standard functions:
+;; Scroll-bar functions:
+(if (fboundp 'scroll-bar-toolkit-scroll)
+ (put 'scroll-bar-toolkit-scroll 'isearch-scroll t))
+(if (fboundp 'mac-handle-scroll-bar-event)
+ (put 'mac-handle-scroll-bar-event 'isearch-scroll t))
+(if (fboundp 'w32-handle-scroll-bar-event)
+ (put 'w32-handle-scroll-bar-event 'isearch-scroll t))
+
+;; Commands which scroll the window:
+(put 'recenter 'isearch-scroll t)
+(put 'reposition-window 'isearch-scroll t)
+(put 'scroll-up 'isearch-scroll t)
+(put 'scroll-down 'isearch-scroll t)
+
+;; Commands which act on the other window
+(put 'list-buffers 'isearch-scroll t)
+(put 'scroll-other-window 'isearch-scroll t)
+(put 'scroll-other-window-down 'isearch-scroll t)
+(put 'beginning-of-buffer-other-window 'isearch-scroll t)
+(put 'end-of-buffer-other-window 'isearch-scroll t)
+
+;; Commands which change the window layout
+(put 'delete-other-windows 'isearch-scroll t)
+(put 'balance-windows 'isearch-scroll t)
+(put 'split-window-vertically 'isearch-scroll t)
+(put 'enlarge-window 'isearch-scroll t)
+
+;; Universal argument commands
+(put 'universal-argument 'isearch-scroll t)
+(put 'negative-argument 'isearch-scroll t)
+(put 'digit-argument 'isearch-scroll t)
+
+(defcustom isearch-allow-scroll nil
+ "If non-nil, scrolling commands are allowed during incremental search."
+ :type 'boolean
+ :group 'isearch)
+(defun isearch-string-out-of-window (isearch-point)
+ "Test whether the search string is currently outside of the window.
+Return nil if it's completely visible, or if point is visible,
+together with as much of the search string as will fit; the symbol
+`above' if we need to scroll the text downwards; the symbol `below',
+if upwards."
+ (let ((w-start (window-start))
+ (w-end (window-end nil t))
+ (w-L1 (save-excursion (move-to-window-line 1) (point)))
+ (w-L-1 (save-excursion (move-to-window-line -1) (point)))
+ start end) ; start and end of search string in buffer
+ (if isearch-forward
+ (setq end isearch-point start (or isearch-other-end isearch-point))
+ (setq start isearch-point end (or isearch-other-end isearch-point)))
+ (cond ((or (and (>= start w-start) (<= end w-end))
+ (if isearch-forward
+ (and (>= isearch-point w-L-1) (< isearch-point w-end)) ; point on Line -1
+ (and (>= isearch-point w-start) (< isearch-point w-L1)))) ; point on Line 0
+ nil)
+ ((and (< start w-start)
+ (< isearch-point w-L-1))
+ 'above)
+ (t 'below))))
+
+(defun isearch-back-into-window (above isearch-point)
+ "Scroll the window to bring the search string back into view.
+Restore point to ISEARCH-POINT in the process. ABOVE is t when the
+search string is above the top of the window, nil when it is beneath
+the bottom."
+ (let (start end)
+ (if isearch-forward
+ (setq end isearch-point start (or isearch-other-end isearch-point))
+ (setq start isearch-point end (or isearch-other-end isearch-point)))
+ (if above
+ (progn
+ (goto-char start)
+ (recenter 0)
+ (when (>= isearch-point (window-end nil t))
+ (goto-char isearch-point)
+ (recenter -1)))
+ (goto-char end)
+ (recenter -1)
+ (when (< isearch-point (window-start))
+ (goto-char isearch-point)
+ (recenter 0))))
+ (goto-char isearch-point))
+
+(defun isearch-reread-key-sequence-naturally (keylist)
+ "Reread key sequence KEYLIST with Isearch mode's keymap deactivated.
+Return the key sequence as a string/vector."
+ (isearch-unread-key-sequence keylist)
+ (let (overriding-terminal-local-map)
+ (read-key-sequence nil))) ; This will go through function-key-map, if nec.
+
+(defun isearch-lookup-scroll-key (key-seq)
+ "If KEY-SEQ is bound to a scrolling command, return it as a symbol.
+Otherwise return nil."
+ (let* ((overriding-terminal-local-map nil)
+ (binding (key-binding key-seq)))
+ (and binding (symbolp binding) (commandp binding)
+ (eq (get binding 'isearch-scroll) t)
+ binding)))
(defalias 'isearch-other-control-char 'isearch-other-meta-char)
-(defun isearch-other-meta-char ()
- "Exit the search normally and reread this key sequence.
-But only if `search-exit-option' is non-nil, the default.
-If it is the symbol `edit', the search string is edited in the minibuffer
-and the meta character is unread so that it applies to editing the string."
- (interactive)
- (let* ((key (this-command-keys))
+(defun isearch-other-meta-char (&optional arg)
+ "Process a miscellaneous key sequence in Isearch mode.
+
+Try to convert the current key-sequence to something usable in Isearch
+mode, either by converting it with `function-key-map', downcasing a
+key with C-<upper case>, or finding a \"scrolling command\" bound to
+it. \(In the last case, we may have to read more events.) If so,
+either unread the converted sequence or execute the command.
+
+Otherwise, if `search-exit-option' is non-nil (the default) unread the
+key-sequence and exit the search normally. If it is the symbol
+`edit', the search string is edited in the minibuffer and the meta
+character is unread so that it applies to editing the string.
+
+ARG is the prefix argument. It will be transmitted through to the
+scrolling command or to the command whose key-sequence exits
+Isearch mode."
+ (interactive "P")
+ (let* ((key (if current-prefix-arg ; not nec the same as ARG
+ (substring (this-command-keys) universal-argument-num-events)
+ (this-command-keys)))
(main-event (aref key 0))
- (keylist (listify-key-sequence key)))
+ (keylist (listify-key-sequence key))
+ scroll-command isearch-point)
(cond ((and (= (length key) 1)
(let ((lookup (lookup-key function-key-map key)))
(not (or (null lookup) (integerp lookup)
((eq search-exit-option 'edit)
(apply 'isearch-unread keylist)
(isearch-edit-string))
+ ;; Handle a scrolling function.
+ ((and isearch-allow-scroll
+ (progn (setq key (isearch-reread-key-sequence-naturally keylist))
+ (setq keylist (listify-key-sequence key))
+ (setq main-event (aref key 0))
+ (setq scroll-command (isearch-lookup-scroll-key key))))
+ ;; From this point onwards, KEY, KEYLIST and MAIN-EVENT hold a
+ ;; complete key sequence, possibly as modified by function-key-map,
+ ;; not merely the one or two event fragment which invoked
+ ;; isearch-other-meta-char in the first place.
+ (setq isearch-point (point))
+ (setq prefix-arg arg)
+ (command-execute scroll-command)
+ (let ((ab-bel (isearch-string-out-of-window isearch-point)))
+ (if ab-bel
+ (isearch-back-into-window (eq ab-bel 'above) isearch-point)
+ (goto-char isearch-point)))
+ (isearch-update))
(search-exit-option
(let (window)
- (cancel-kbd-macro-events)
- (apply 'isearch-unread keylist)
- ;; Properly handle scroll-bar and mode-line clicks
- ;; for which a dummy prefix event was generated as (aref key 0).
- (and (> (length key) 1)
- (symbolp (aref key 0))
- (listp (aref key 1))
- (not (numberp (posn-point (event-start (aref key 1)))))
- ;; Convert the event back into its raw form,
- ;; with the dummy prefix implicit in the mouse event,
- ;; so it will get split up once again.
- (progn (setq unread-command-events
- (cdr unread-command-events))
- (setq main-event (car unread-command-events))
- (setcar (cdr (event-start main-event))
- (car (nth 1 (event-start main-event))))))
- ;; If we got a mouse click, maybe it was read with the buffer
+ (isearch-unread-key-sequence keylist)
+ (setq main-event (car unread-command-events))
+
+ ;; If we got a mouse click event, that event contains the
+ ;; window clicked on. maybe it was read with the buffer
;; it was clicked on. If so, that buffer, not the current one,
;; is in isearch mode. So end the search in that buffer.
- (if (and (listp main-event)
+
+ ;; ??? I have no idea what this if checks for, but it's
+ ;; obviously wrong for the case that a down-mouse event
+ ;; on another window invokes this function. The event
+ ;; will contain the window clicked on and that window's
+ ;; buffer is certainly not always in Isearch mode.
+ ;;
+ ;; Leave the code in, but check for current buffer not
+ ;; being in Isearch mode for now, until someone tells
+ ;; what it's really supposed to do.
+ ;;
+ ;; --gerd 2001-08-10.
+
+ (if (and (not isearch-mode)
+ (listp main-event)
(setq window (posn-window (event-start main-event)))
(windowp window)
(or (> (minibuffer-depth) 0)
(isearch-done)
(isearch-clean-overlays))
(isearch-done)
- (isearch-clean-overlays))))
- (t;; otherwise nil
+ (isearch-clean-overlays)
+ (setq prefix-arg arg))))
+ (t;; otherwise nil
(isearch-process-search-string key key)))))
(defun isearch-quote-char ()
(defun isearch-whitespace-chars ()
"Match all whitespace chars, if in regexp mode.
-If you want to search for just a space, type \\[quoted-insert] SPC."
+If you want to search for just a space, type \\<isearch-mode-map>\\[isearch-quote-char] SPC."
(interactive)
- (if isearch-regexp
+ (if isearch-regexp
(if (and search-whitespace-regexp (not isearch-within-brackets)
(not isearch-invalid-regexp))
(isearch-process-search-string search-whitespace-regexp " ")
(defun isearch-process-search-char (char)
;; Append the char to the search string, update the message and re-search.
- (isearch-process-search-string
- (char-to-string char)
+ (isearch-process-search-string
+ (char-to-string char)
(if (>= char ?\200)
(char-to-string char)
(isearch-text-char-description char))))
;; Helper for isearch-complete and isearch-complete-edit
;; Return t if completion OK, nil if no completion exists.
(let* ((ring (if isearch-regexp regexp-search-ring search-ring))
- (alist (mapcar (function (lambda (string) (list string))) ring))
(completion-ignore-case case-fold-search)
- (completion (try-completion isearch-string alist)))
+ (completion (try-completion isearch-string ring)))
(cond
((eq completion t)
;; isearch-string stays the same
(progn
(if completion-auto-help
(with-output-to-temp-buffer "*Isearch completions*"
- (display-completion-list
- (all-completions isearch-string alist))))
+ (display-completion-list
+ (all-completions isearch-string ring))))
t)
(and completion
(setq isearch-string completion))))
If there is no completion possible, say so and continue searching."
(interactive)
(if (isearch-complete1)
- (isearch-edit-string)
+ (progn (setq isearch-message
+ (mapconcat 'isearch-text-char-description
+ isearch-string ""))
+ (isearch-edit-string))
;; else
(sit-for 1)
(isearch-update)))
(defun isearch-complete-edit ()
"Same as `isearch-complete' except in the minibuffer."
(interactive)
- (setq isearch-string (buffer-string))
+ (setq isearch-string (field-string))
(if (isearch-complete1)
(progn
(delete-field)
(insert isearch-string))))
\f
-;; The search status stack (and isearch window-local variables, not used).
-;; Need a structure for this.
-
-(defun isearch-top-state ()
- (let ((cmd (car isearch-cmds)))
- (setq isearch-string (car cmd)
- isearch-message (car (cdr cmd))
- isearch-success (nth 3 cmd)
- isearch-forward (nth 4 cmd)
- isearch-other-end (nth 5 cmd)
- isearch-word (nth 6 cmd)
- isearch-invalid-regexp (nth 7 cmd)
- isearch-wrapped (nth 8 cmd)
- isearch-barrier (nth 9 cmd)
- isearch-within-brackets (nth 10 cmd)
- isearch-case-fold-search (nth 11 cmd))
- (goto-char (car (cdr (cdr cmd))))))
-
-(defun isearch-pop-state ()
- (setq isearch-cmds (cdr isearch-cmds))
- (isearch-top-state))
-
-(defun isearch-push-state ()
- (setq isearch-cmds
- (cons (list isearch-string isearch-message (point)
- isearch-success isearch-forward isearch-other-end
- isearch-word
- isearch-invalid-regexp isearch-wrapped isearch-barrier
- isearch-within-brackets isearch-case-fold-search)
- isearch-cmds)))
-
-\f
;; Message string
(defun isearch-message (&optional c-q-hack ellipsis)
(let ((cursor-in-echo-area ellipsis)
(m (concat
(isearch-message-prefix c-q-hack ellipsis isearch-nonincremental)
- isearch-message
+ (if (and (not isearch-success)
+ (string-match " +$" isearch-message))
+ (concat
+ (substring isearch-message 0 (match-beginning 0))
+ (propertize (substring isearch-message (match-beginning 0))
+ 'face 'trailing-whitespace))
+ isearch-message)
(isearch-message-suffix c-q-hack ellipsis)
)))
(if c-q-hack
;; If currently failing, display no ellipsis.
(or isearch-success (setq ellipsis nil))
(let ((m (concat (if isearch-success "" "failing ")
+ (if isearch-adjusted "pending " "")
(if (and isearch-wrapped
+ (not isearch-wrap-function)
(if isearch-forward
(> (point) isearch-opoint)
(< (point) isearch-opoint)))
(concat " [" current-input-method-title "]: ")
": ")
)))
- (concat (upcase (substring m 0 1)) (substring m 1))))
-
+ (propertize (concat (upcase (substring m 0 1)) (substring m 1))
+ 'face 'minibuffer-prompt)))
(defun isearch-message-suffix (&optional c-q-hack ellipsis)
(concat (if c-q-hack "^Q" "")
"")))
\f
-;;; Searching
+;; Searching
+
+(defvar isearch-search-fun-function nil
+ "Override `isearch-search-fun'.
+This function should return the search function for isearch to use.
+It will call this function with three arguments
+as if it were `search-forward'.")
+
+(defun isearch-search-fun ()
+ "Return the function to use for the search.
+Can be changed via `isearch-search-fun-function' for special needs."
+ (if isearch-search-fun-function
+ (funcall isearch-search-fun-function)
+ (cond
+ (isearch-word
+ (if isearch-forward 'word-search-forward 'word-search-backward))
+ (isearch-regexp
+ (if isearch-forward 're-search-forward 're-search-backward))
+ (t
+ (if isearch-forward 'search-forward 'search-backward)))))
(defun isearch-search ()
;; Do the search with the current search string.
(while retry
(setq isearch-success
(funcall
- (cond (isearch-word
- (if isearch-forward
- 'word-search-forward 'word-search-backward))
- (isearch-regexp
- (if isearch-forward
- 're-search-forward 're-search-backward))
- (t
- (if isearch-forward 'search-forward 'search-backward)))
+ (isearch-search-fun)
isearch-string nil t))
;; Clear RETRY unless we matched some invisible text
;; and we aren't supposed to do that.
(quit (isearch-unread ?\C-g)
(setq isearch-success nil))
- (invalid-regexp
+ (invalid-regexp
(setq isearch-invalid-regexp (car (cdr lossage)))
(setq isearch-within-brackets (string-match "\\`Unmatched \\["
isearch-invalid-regexp))
(setq isearch-invalid-regexp "incomplete input")))
(error
;; stack overflow in regexp search.
- (setq isearch-invalid-regexp (car (cdr lossage)))))
+ (setq isearch-invalid-regexp (format "%s" lossage))))
(if isearch-success
nil
;; Ding if failed this time after succeeding last time.
- (and (nth 3 (car isearch-cmds))
+ (and (isearch-success-state (car isearch-cmds))
(ding))
- (goto-char (nth 2 (car isearch-cmds)))))
+ (if (functionp (isearch-pop-fun-state (car isearch-cmds)))
+ (funcall (isearch-pop-fun-state (car isearch-cmds)) (car isearch-cmds)))
+ (goto-char (isearch-point-state (car isearch-cmds)))))
-;;; Called when opening an overlay, and we are still in isearch.
+;; Called when opening an overlay, and we are still in isearch.
(defun isearch-open-overlay-temporary (ov)
- (if (not (null (overlay-get ov 'isearch-open-invisible-temporary)))
+ (if (not (null (overlay-get ov 'isearch-open-invisible-temporary)))
;; Some modes would want to open the overlays temporary during
;; isearch in their own way, they should set the
;; `isearch-open-invisible-temporary' to a function doing this.
(overlay-put ov 'intangible nil)))
-;;; This is called at the end of isearch. It will open the overlays
-;;; that contain the latest match. Obviously in case of a C-g the
-;;; point returns to the original location which surely is not contain
-;;; in any of these overlays, se we are safe in this case too.
+;; This is called at the end of isearch. It will open the overlays
+;; that contain the latest match. Obviously in case of a C-g the
+;; point returns to the original location which surely is not contain
+;; in any of these overlays, se we are safe in this case too.
(defun isearch-open-necessary-overlays (ov)
- (let ((inside-overlay (and (> (point) (overlay-start ov))
+ (let ((inside-overlay (and (> (point) (overlay-start ov))
(< (point) (overlay-end ov))))
;; If this exists it means that the overlay was opened using
;; this function, not by us tweaking the overlay properties.
(if fct-temp
(funcall fct-temp ov t)))))
-;;; This is called when exiting isearch. It closes the temporary
-;;; opened overlays, except the ones that contain the latest match.
+;; This is called when exiting isearch. It closes the temporary
+;; opened overlays, except the ones that contain the latest match.
(defun isearch-clean-overlays ()
(when isearch-opened-overlays
(mapc 'isearch-open-necessary-overlays isearch-opened-overlays)
(setq isearch-opened-overlays nil)))
-;;; Verify if the current match is outside of each element of
-;;; `isearch-opened-overlays', if so close that overlay.
-(defun isearch-close-unecessary-overlays (begin end)
- (let ((ov-list isearch-opened-overlays)
- ov
- inside-overlay
- fct-temp)
+
+(defun isearch-intersects-p (start0 end0 start1 end1)
+ "Return t if regions START0..END0 and START1..END1 intersect."
+ (or (and (>= start0 start1) (< start0 end1))
+ (and (> end0 start1) (<= end0 end1))
+ (and (>= start1 start0) (< start1 end0))
+ (and (> end1 start0) (<= end1 end0))))
+
+
+;; Verify if the current match is outside of each element of
+;; `isearch-opened-overlays', if so close that overlay.
+
+(defun isearch-close-unnecessary-overlays (begin end)
+ (let ((overlays isearch-opened-overlays))
(setq isearch-opened-overlays nil)
- (while ov-list
- (setq ov (car ov-list))
- (setq ov-list (cdr ov-list))
- (setq inside-overlay (or (and (> begin (overlay-start ov))
- (< begin (overlay-end ov)))
- (and (> end (overlay-start ov))
- (< end (overlay-end ov)))))
- ;; If this exists it means that the overlay was opened using
- ;; this function, not by us tweaking the overlay properties.
- (setq fct-temp (overlay-get ov 'isearch-open-invisible-temporary))
- (if inside-overlay
- (setq isearch-opened-overlays (cons ov isearch-opened-overlays))
- (if fct-temp
- (funcall fct-temp ov t)
- (overlay-put ov 'invisible (overlay-get ov 'isearch-invisible))
- (overlay-put ov 'intangible (overlay-get ov 'isearch-intangible))
- (overlay-put ov 'isearch-invisible nil)
- (overlay-put ov 'isearch-intangible nil))))))
+ (dolist (ov overlays)
+ (if (isearch-intersects-p begin end (overlay-start ov) (overlay-end ov))
+ (push ov isearch-opened-overlays)
+ (let ((fct-temp (overlay-get ov 'isearch-open-invisible-temporary)))
+ (if fct-temp
+ ;; If this exists it means that the overlay was opened
+ ;; using this function, not by us tweaking the overlay
+ ;; properties.
+ (funcall fct-temp ov t)
+ (overlay-put ov 'invisible (overlay-get ov 'isearch-invisible))
+ (overlay-put ov 'intangible (overlay-get ov 'isearch-intangible))
+ (overlay-put ov 'isearch-invisible nil)
+ (overlay-put ov 'isearch-intangible nil)))))))
+
(defun isearch-range-invisible (beg end)
"Return t if all the text from BEG to END is invisible."
- (and (/= beg end)
- ;; Check that invisibility runs up to END.
- (save-excursion
- (goto-char beg)
- (let (
- ;; can-be-opened keeps track if we can open some overlays.
- (can-be-opened (eq search-invisible 'open))
- ;; the list of overlays that could be opened
- (crt-overlays nil))
- (when (and can-be-opened isearch-hide-immediately)
- (isearch-close-unecessary-overlays beg end))
- ;; If the following character is currently invisible,
- ;; skip all characters with that same `invisible' property value.
- ;; Do that over and over.
- (while (and (< (point) end)
- (let ((prop
- (get-char-property (point) 'invisible)))
- (if (eq buffer-invisibility-spec t)
- prop
- (or (memq prop buffer-invisibility-spec)
- (assq prop buffer-invisibility-spec)))))
- (if (get-text-property (point) 'invisible)
- (progn
- (goto-char (next-single-property-change (point) 'invisible
- nil end))
- ;; if text is hidden by an `invisible' text property
- ;; we cannot open it at all.
- (setq can-be-opened nil))
- (unless (null can-be-opened)
- (let ((overlays (overlays-at (point)))
- ov-list
- o
- invis-prop)
- (while overlays
- (setq o (car overlays)
- invis-prop (overlay-get o 'invisible))
- (if (if (eq buffer-invisibility-spec t)
- invis-prop
- (or (memq invis-prop buffer-invisibility-spec)
- (assq invis-prop buffer-invisibility-spec)))
- (if (overlay-get o 'isearch-open-invisible)
- (setq ov-list (cons o ov-list))
- ;; We found one overlay that cannot be
- ;; opened, that means the whole chunk
- ;; cannot be opened.
- (setq can-be-opened nil)))
- (setq overlays (cdr overlays)))
- (if can-be-opened
- ;; It makes sense to append to the open
- ;; overlays list only if we know that this is
- ;; t.
- (setq crt-overlays (append ov-list crt-overlays)))))
- (goto-char (next-overlay-change (point)))))
- ;; See if invisibility reaches up thru END.
- (if (>= (point) end)
- (if (and (not (null can-be-opened)) (consp crt-overlays))
- (progn
- (setq isearch-opened-overlays
- (append isearch-opened-overlays crt-overlays))
- (mapc 'isearch-open-overlay-temporary crt-overlays)
- nil)
- t))))))
+ (when (/= beg end)
+ ;; Check that invisibility runs up to END.
+ (save-excursion
+ (goto-char beg)
+ (let (;; can-be-opened keeps track if we can open some overlays.
+ (can-be-opened (eq search-invisible 'open))
+ ;; the list of overlays that could be opened
+ (crt-overlays nil))
+ (when (and can-be-opened isearch-hide-immediately)
+ (isearch-close-unnecessary-overlays beg end))
+ ;; If the following character is currently invisible,
+ ;; skip all characters with that same `invisible' property value.
+ ;; Do that over and over.
+ (while (and (< (point) end)
+ (let ((prop
+ (get-char-property (point) 'invisible)))
+ (if (eq buffer-invisibility-spec t)
+ prop
+ (or (memq prop buffer-invisibility-spec)
+ (assq prop buffer-invisibility-spec)))))
+ (if (get-text-property (point) 'invisible)
+ (progn
+ (goto-char (next-single-property-change (point) 'invisible
+ nil end))
+ ;; if text is hidden by an `invisible' text property
+ ;; we cannot open it at all.
+ (setq can-be-opened nil))
+ (when can-be-opened
+ (let ((overlays (overlays-at (point)))
+ ov-list
+ o
+ invis-prop)
+ (while overlays
+ (setq o (car overlays)
+ invis-prop (overlay-get o 'invisible))
+ (if (if (eq buffer-invisibility-spec t)
+ invis-prop
+ (or (memq invis-prop buffer-invisibility-spec)
+ (assq invis-prop buffer-invisibility-spec)))
+ (if (overlay-get o 'isearch-open-invisible)
+ (setq ov-list (cons o ov-list))
+ ;; We found one overlay that cannot be
+ ;; opened, that means the whole chunk
+ ;; cannot be opened.
+ (setq can-be-opened nil)))
+ (setq overlays (cdr overlays)))
+ (if can-be-opened
+ ;; It makes sense to append to the open
+ ;; overlays list only if we know that this is
+ ;; t.
+ (setq crt-overlays (append ov-list crt-overlays)))))
+ (goto-char (next-overlay-change (point)))))
+ ;; See if invisibility reaches up thru END.
+ (if (>= (point) end)
+ (if (and can-be-opened (consp crt-overlays))
+ (progn
+ (setq isearch-opened-overlays
+ (append isearch-opened-overlays crt-overlays))
+ (mapc 'isearch-open-overlay-temporary crt-overlays)
+ nil)
+ (setq isearch-hidden t)))))))
\f
-;;; Highlighting
+;; Highlighting
(defvar isearch-overlay nil)
-(defsubst isearch-set-lazy-highlight-faces-at (pos face)
- "Set the face property of isearch lazy highlight overlays at POS to FACE.
-If POS is nil, nothing is done."
- (unless (null pos)
- (dolist (ov (overlays-at pos))
- (when (and (not (eq ov isearch-overlay))
- (memq ov isearch-lazy-highlight-overlays)
- (not (eq (overlay-get ov 'face) face)))
- (overlay-put ov 'face face)))))
-
(defun isearch-highlight (beg end)
- (unless (or (null search-highlight) (null (display-color-p)))
+ (unless (null search-highlight)
(cond (isearch-overlay
;; Overlay already exists, just move it.
-
- ;; Check to see if there are any lazy-isearch overlays at
- ;; the same position with their face property suppressed
- ;; (to avoid face clashes), and if so, give them their face
- ;; back.
- (isearch-set-lazy-highlight-faces-at (overlay-start isearch-overlay)
- isearch-lazy-highlight-face)
-
(move-overlay isearch-overlay beg end (current-buffer)))
(t
;; Overlay doesn't exist, create it.
(setq isearch-overlay (make-overlay beg end))
- (overlay-put isearch-overlay 'face isearch)))
-
- ;; Suppress the faces of any lazy-isearch overlays at the new position
- (isearch-set-lazy-highlight-faces-at beg nil)))
+ (overlay-put isearch-overlay 'face isearch)
+ (overlay-put isearch-overlay 'priority 1) ;higher than lazy overlays
+ ))))
(defun isearch-dehighlight (totally)
(when isearch-overlay
- ;; Check to see if there are any lazy-isearch overlays at the same
- ;; position with their face property suppressed (to avoid face
- ;; clashes), and if so, give them their face back.
- (isearch-set-lazy-highlight-faces-at (overlay-start isearch-overlay)
- isearch-lazy-highlight-face)
(delete-overlay isearch-overlay)))
-;;; General utilities
+;; General utilities
(defun isearch-no-upper-case-p (string regexp-flag)
"Return t if there are no upper case chars in STRING.
If REGEXP-FLAG is non-nil, disregard letters preceded by `\\' (but not `\\\\')
since they have special meaning in a regexp."
- (let (quote-flag (i 0) (len (length string)) found)
+ (let (quote-flag (i 0) (len (length string)) found)
(while (and (not found) (< i len))
(let ((char (aref string i)))
(if (and regexp-flag (eq char ?\\))
(setq quote-flag (not quote-flag))
(if (and (not quote-flag) (not (eq char (downcase char))))
- (setq found t))))
+ (setq found t))
+ (setq quote-flag nil)))
(setq i (1+ i)))
(not found)))
(append char-or-events unread-command-events)))
\f
-;;; isearch-lazy-highlight feature
-;;; by Bob Glickstein <http://www.zanshin.com/~bobg/>
-
-;;; When active, *every* match for the current search string is
-;;; highlighted: the current one using the normal isearch match color
-;;; and all the others using the unobtrusive `secondary-selection'
-;;; color. The extra highlighting makes it easier to anticipate where
-;;; the cursor will land each time you press C-s or C-r to repeat a
-;;; pending search. Highlighting of these additional matches happens
-;;; in a deferred fashion using "idle timers," so the cycles needed do
-;;; not rob isearch of its usual snappy response.
-
-;;; IMPLEMENTATION NOTE: This depends on some isearch internals.
-;;; Specifically:
-;;; - `isearch-update' is expected to be called (at least) every time
-;;; the search string changes;
-;;; - `isearch-string' is expected to contain the current search
-;;; string as entered by the user;
-;;; - `isearch-overlay' is expected to contain the overlay used for
-;;; primary isearch match-highlighting;
-;;; - `isearch-opoint' is expected to contain the location where the
-;;; current search began;
-;;; - the type of the current search is expected to be given by
-;;; `isearch-word' and `isearch-regexp';
-;;; - the direction of the current search is expected to be given by
-;;; `isearch-forward';
-;;; - the variable `isearch-invalid-regexp' is expected to be true
-;;; iff `isearch-string' is an invalid regexp.
-
-(require 'timer)
+;; isearch-lazy-highlight feature
+;; by Bob Glickstein <http://www.zanshin.com/~bobg/>
+
+;; When active, *every* match for the current search string is
+;; highlighted: the current one using the normal isearch match color
+;; and all the others using `isearch-lazy-highlight-face'. The extra
+;; highlighting makes it easier to anticipate where the cursor will
+;; land each time you press C-s or C-r to repeat a pending search.
+;; Highlighting of these additional matches happens in a deferred
+;; fashion using "idle timers," so the cycles needed do not rob
+;; isearch of its usual snappy response.
+
+;; IMPLEMENTATION NOTE: This depends on some isearch internals.
+;; Specifically:
+;; - `isearch-update' is expected to be called (at least) every time
+;; the search string or window-start changes;
+;; - `isearch-string' is expected to contain the current search
+;; string as entered by the user;
+;; - the type of the current search is expected to be given by
+;; `isearch-word' and `isearch-regexp';
+;; - the direction of the current search is expected to be given by
+;; `isearch-forward';
+;; - the variable `isearch-invalid-regexp' is expected to be true
+;; iff `isearch-string' is an invalid regexp.
(defgroup isearch-lazy-highlight nil
"Lazy highlighting feature for incremental search."
:prefix "isearch-lazy-highlight-"
+ :version "21.1"
:group 'isearch)
(defcustom isearch-lazy-highlight t
:type 'number
:group 'isearch-lazy-highlight)
-(defcustom isearch-lazy-highlight-interval 0.0625
+(defcustom isearch-lazy-highlight-interval 0 ; 0.0625
"*Seconds between lazily highlighting successive matches."
:type 'number
:group 'isearch-lazy-highlight)
-(defcustom isearch-lazy-highlight-max 20
- "*Maximum number of matches to highlight."
+(defcustom isearch-lazy-highlight-max-at-a-time 20
+ "*Maximum matches to highlight at a time (for `isearch-lazy-highlight').
+Larger values may reduce isearch's responsiveness to user input;
+smaller values make matches highlight slowly.
+A value of nil means highlight all matches."
:type '(choice (const :tag "All" nil)
(integer :tag "Some"))
:group 'isearch-lazy-highlight)
:group 'isearch)
(defface isearch
- '((t (:inherit region)))
- "Face for highlighting matches."
+ '((((class color) (min-colors 88) (background light))
+ ;; The background must not be too dark, for that means
+ ;; the character is hard to see when the cursor is there.
+ (:background "magenta2" :foreground "lightskyblue1"))
+ (((class color) (min-colors 88) (background dark))
+ (:background "palevioletred2" :foreground "brown4"))
+ (((class color) (min-colors 16))
+ (:background "magenta4" :foreground "cyan1"))
+ (((class color) (min-colors 8))
+ (:background "magenta4" :foreground "cyan1"))
+ (t (:inverse-video t)))
+ "Face for highlighting Isearch matches."
:group 'isearch-faces)
(defvar isearch 'isearch)
(defface isearch-lazy-highlight-face
- '((t (:inherit secondary-selection)))
- "Face for lazy highlighting of matches."
+ '((((class color) (min-colors 88) (background light))
+ (:background "paleturquoise"))
+ (((class color) (min-colors 88) (background dark))
+ (:background "paleturquoise4"))
+ (((class color) (min-colors 16))
+ (:background "turquoise3"))
+ (((class color) (min-colors 8))
+ (:background "turquoise3"))
+ (t (:underline t)))
+ "Face for lazy highlighting of Isearch matches other than the current one."
:group 'isearch-faces)
(defvar isearch-lazy-highlight-face 'isearch-lazy-highlight-face)
(defvar isearch-lazy-highlight-overlays nil)
-(defvar isearch-lazy-highlight-window nil)
+(defvar isearch-lazy-highlight-wrapped nil)
(defvar isearch-lazy-highlight-start nil)
(defvar isearch-lazy-highlight-end nil)
(defvar isearch-lazy-highlight-timer nil)
(defvar isearch-lazy-highlight-last-string nil)
-
-(defun isearch-lazy-highlight-cleanup (&optional remove)
- "Stop lazy highlighting and maybe remove existing highlighting.
-REMOVE non-nil means remove all the existing lazy highlighting.
-
-This function is called when exiting an incremental search."
+(defvar isearch-lazy-highlight-window nil)
+(defvar isearch-lazy-highlight-window-start nil)
+(defvar isearch-lazy-highlight-window-end nil)
+(defvar isearch-lazy-highlight-case-fold-search nil)
+(defvar isearch-lazy-highlight-regexp nil)
+
+(defun isearch-lazy-highlight-cleanup (&optional force)
+ "Stop lazy highlighting and remove extra highlighting from current buffer.
+FORCE non-nil means do it whether or not `isearch-lazy-highlight-cleanup'
+is nil. This function is called when exiting an incremental search if
+`isearch-lazy-highlight-cleanup' is non-nil."
(interactive '(t))
- (if remove
- (isearch-lazy-highlight-remove-overlays))
- (if isearch-lazy-highlight-timer
- (progn
- (cancel-timer isearch-lazy-highlight-timer)
- (setq isearch-lazy-highlight-timer nil))))
-
-(defun isearch-lazy-highlight-remove-overlays (&optional keep-start keep-end)
- "Remove lazy highlight overlays from the current buffer.
-With optional arguments KEEP-START and KEEP-END,
-preserve any overlays in that range."
- (let ((tem isearch-lazy-highlight-overlays))
- (while tem
- (if (or (null keep-start)
- (let ((pos (overlay-start (car tem))))
- (or (< pos keep-start) (> pos keep-end))))
- (progn
- (delete-overlay (car tem))
- (setq isearch-lazy-highlight-overlays
- (delq (car tem) isearch-lazy-highlight-overlays))))
- (setq tem (cdr tem)))))
+ (if (or force isearch-lazy-highlight-cleanup)
+ (while isearch-lazy-highlight-overlays
+ (delete-overlay (car isearch-lazy-highlight-overlays))
+ (setq isearch-lazy-highlight-overlays
+ (cdr isearch-lazy-highlight-overlays))))
+ (when isearch-lazy-highlight-timer
+ (cancel-timer isearch-lazy-highlight-timer)
+ (setq isearch-lazy-highlight-timer nil)))
(defun isearch-lazy-highlight-new-loop ()
- "Clear obsolete highlighting, and queue up to do new highlighting.
+ "Cleanup any previous `isearch-lazy-highlight' loop and begin a new one.
This happens when `isearch-update' is invoked (which can cause the
-search string to change)."
+search string to change or the window to scroll)."
(when (and isearch-lazy-highlight
- (not isearch-invalid-regexp)
- (not (equal isearch-string "")))
-
- ;; If the search string has changed, remove all old overlays.
- (unless (equal isearch-string isearch-lazy-highlight-last-string)
- (isearch-lazy-highlight-remove-overlays)
- (setq isearch-lazy-highlight-window nil))
-
- (if (and isearch-overlay
- (not (overlay-get isearch-overlay 'priority)))
- ;; Make sure the isearch-overlay takes priority
- ;; over any other matches.
- (overlay-put isearch-overlay 'priority 1))
-
- ;; Queue up to display other matches after a short pause.
- (setq isearch-lazy-highlight-timer
- (run-with-idle-timer isearch-lazy-highlight-initial-delay nil
- 'isearch-lazy-highlight-update))))
+ (null executing-kbd-macro)
+ (sit-for 0) ;make sure (window-start) is credible
+ (or (not (equal isearch-string
+ isearch-lazy-highlight-last-string))
+ (not (eq (selected-window)
+ isearch-lazy-highlight-window))
+ (not (eq isearch-lazy-highlight-case-fold-search
+ isearch-case-fold-search))
+ (not (eq isearch-lazy-highlight-regexp
+ isearch-regexp))
+ (not (= (window-start)
+ isearch-lazy-highlight-window-start))
+ (not (= (window-end) ; Window may have been split/joined.
+ isearch-lazy-highlight-window-end))))
+ ;; something important did indeed change
+ (isearch-lazy-highlight-cleanup t) ;kill old loop & remove overlays
+ (when (not isearch-invalid-regexp)
+ (setq isearch-lazy-highlight-window (selected-window)
+ isearch-lazy-highlight-window-start (window-start)
+ isearch-lazy-highlight-window-end (window-end)
+ isearch-lazy-highlight-start (point)
+ isearch-lazy-highlight-end (point)
+ isearch-lazy-highlight-last-string isearch-string
+ isearch-lazy-highlight-case-fold-search isearch-case-fold-search
+ isearch-lazy-highlight-regexp isearch-regexp
+ isearch-lazy-highlight-wrapped nil)
+ (unless (equal isearch-string "")
+ (setq isearch-lazy-highlight-timer
+ (run-with-idle-timer isearch-lazy-highlight-initial-delay nil
+ 'isearch-lazy-highlight-update))))))
+
+(defun isearch-lazy-highlight-search ()
+ "Search ahead for the next or previous match, for lazy highlighting.
+Attempt to do the search exactly the way the pending isearch would."
+ (let ((case-fold-search isearch-case-fold-search))
+ (funcall (isearch-search-fun)
+ isearch-string
+ (if isearch-forward
+ (if isearch-lazy-highlight-wrapped
+ isearch-lazy-highlight-start
+ (window-end))
+ (if isearch-lazy-highlight-wrapped
+ isearch-lazy-highlight-end
+ (window-start)))
+ t)))
(defun isearch-lazy-highlight-update ()
- "Update highlighting of possible other matches for isearch."
- (unless (and (eq isearch-lazy-highlight-window (selected-window))
- (equal isearch-lazy-highlight-start (window-start)))
-
- ;; The search string or the visible window has changed.
-
- (setq isearch-lazy-highlight-window (selected-window)
- isearch-lazy-highlight-start (window-start)
- isearch-lazy-highlight-end (window-end nil t)
- isearch-lazy-highlight-last-string isearch-string)
-
- ;; If the string is the same, the old overlays are still usable
- ;; if they are still visible in the window.
- (isearch-lazy-highlight-remove-overlays (window-start)
- (window-end nil t))
-
- (when (or (null isearch-lazy-highlight-max)
- (< (length isearch-lazy-highlight-overlays)
- isearch-lazy-highlight-max))
- (save-excursion
- (save-match-data
- (let (found)
- (goto-char isearch-lazy-highlight-start)
- (while (let ((case-fold-search isearch-case-fold-search))
- (funcall (cond (isearch-word 'word-search-forward)
- (isearch-regexp 're-search-forward)
- (t 'search-forward))
- isearch-string
- isearch-lazy-highlight-end
- t))
- ;; Found the next match.
- (let ((ov (make-overlay (match-beginning 0)
- (match-end 0))))
- ;; If OV overlaps the current isearch overlay, suppress
- ;; its face property; otherwise, we sometimes get odd
- ;; looking face combinations.
- (unless (memq isearch-overlay
- (overlays-at (match-beginning 0)))
- (overlay-put ov 'face isearch-lazy-highlight-face))
-
- (overlay-put ov 'priority 0)
- ;; Don't highlight on any other windows.
- (overlay-put ov 'window isearch-lazy-highlight-window)
-
- (push ov isearch-lazy-highlight-overlays)))))))))
+ "Update highlighting of other matches for current search."
+ (let ((max isearch-lazy-highlight-max-at-a-time)
+ (looping t)
+ nomore)
+ (save-excursion
+ (save-match-data
+ (goto-char (if isearch-forward
+ isearch-lazy-highlight-end
+ isearch-lazy-highlight-start))
+ (while looping
+ (let ((found (isearch-lazy-highlight-search)))
+ (when max
+ (setq max (1- max))
+ (if (<= max 0)
+ (setq looping nil)))
+ (if found
+ (let ((mb (match-beginning 0))
+ (me (match-end 0)))
+ (if (= mb me) ;zero-length match
+ (if isearch-forward
+ (if (= mb (if isearch-lazy-highlight-wrapped
+ isearch-lazy-highlight-start
+ (window-end)))
+ (setq found nil)
+ (forward-char 1))
+ (if (= mb (if isearch-lazy-highlight-wrapped
+ isearch-lazy-highlight-end
+ (window-start)))
+ (setq found nil)
+ (forward-char -1)))
+
+ ;; non-zero-length match
+ (let ((ov (make-overlay mb me)))
+ (overlay-put ov 'face isearch-lazy-highlight-face)
+ (overlay-put ov 'priority 0) ;lower than main overlay
+ (overlay-put ov 'window (selected-window))
+ (push ov isearch-lazy-highlight-overlays)))
+ (if isearch-forward
+ (setq isearch-lazy-highlight-end (point))
+ (setq isearch-lazy-highlight-start (point)))))
+
+ ;; not found or zero-length match at the search bound
+ (if (not found)
+ (if isearch-lazy-highlight-wrapped
+ (setq looping nil
+ nomore t)
+ (setq isearch-lazy-highlight-wrapped t)
+ (if isearch-forward
+ (progn
+ (setq isearch-lazy-highlight-end (window-start))
+ (goto-char (window-start)))
+ (setq isearch-lazy-highlight-start (window-end))
+ (goto-char (window-end)))))))
+ (unless nomore
+ (setq isearch-lazy-highlight-timer
+ (run-at-time isearch-lazy-highlight-interval nil
+ 'isearch-lazy-highlight-update)))))))
(defun isearch-resume (search regexp word forward message case-fold)
"Resume an incremental search.
isearch-message message
isearch-case-fold-search case-fold)
(isearch-search))
-
+
+;; arch-tag: 74850515-f7d8-43a6-8a2c-ca90a4c1e675
;;; isearch.el ends here
HCoop / bpt / emacs.git / blobdiff