(ispell-kill-ispell-hook): Add to the hook when
[emacs.git] / lisp / isearch.el
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1 ;;; isearch.el --- incremental search minor mode
3 ;; Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1999, 2000,
4 ;; 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
6 ;; Author: Daniel LaLiberte <liberte@cs.uiuc.edu>
7 ;; Maintainer: FSF
8 ;; Keywords: matching
10 ;; This file is part of GNU Emacs.
12 ;; GNU Emacs is free software; you can redistribute it and/or modify
13 ;; it under the terms of the GNU General Public License as published by
14 ;; the Free Software Foundation; either version 2, or (at your option)
15 ;; any later version.
17 ;; GNU Emacs is distributed in the hope that it will be useful,
18 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
19 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 ;; GNU General Public License for more details.
22 ;; You should have received a copy of the GNU General Public License
23 ;; along with GNU Emacs; see the file COPYING. If not, write to the
24 ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
25 ;; Boston, MA 02110-1301, USA.
27 ;;; Commentary:
29 ;; Instructions
31 ;; For programmed use of isearch-mode, e.g. calling (isearch-forward),
32 ;; isearch-mode behaves modally and does not return until the search
33 ;; is completed. It uses a recursive-edit to behave this way.
35 ;; The key bindings active within isearch-mode are defined below in
36 ;; `isearch-mode-map' which is given bindings close to the default
37 ;; characters of the original isearch.el. With `isearch-mode',
38 ;; however, you can bind multi-character keys and it should be easier
39 ;; to add new commands. One bug though: keys with meta-prefix cannot
40 ;; be longer than two chars. Also see minibuffer-local-isearch-map
41 ;; for bindings active during `isearch-edit-string'.
43 ;; isearch-mode should work even if you switch windows with the mouse,
44 ;; in which case isearch-mode is terminated automatically before the
45 ;; switch.
47 ;; The search ring and completion commands automatically put you in
48 ;; the minibuffer to edit the string. This gives you a chance to
49 ;; modify the search string before executing the search. There are
50 ;; three commands to terminate the editing: C-s and C-r exit the
51 ;; minibuffer and search forward and reverse respectively, while C-m
52 ;; exits and does a nonincremental search.
54 ;; Exiting immediately from isearch uses isearch-edit-string instead
55 ;; of nonincremental-search, if search-nonincremental-instead is non-nil.
56 ;; The name of this option should probably be changed if we decide to
57 ;; keep the behavior. No point in forcing nonincremental search until
58 ;; the last possible moment.
60 ;;; Code:
63 ;; Some additional options and constants.
65 (defgroup isearch nil
66 "Incremental search minor mode."
67 :link '(emacs-commentary-link "isearch")
68 :link '(custom-manual "(emacs)Incremental Search")
69 :prefix "isearch-"
70 :prefix "search-"
71 :group 'matching)
74 (defcustom search-exit-option t
75 "*Non-nil means random control characters terminate incremental search."
76 :type 'boolean
77 :group 'isearch)
79 (defcustom search-slow-window-lines 1
80 "*Number of lines in slow search display windows.
81 These are the short windows used during incremental search on slow terminals.
82 Negative means put the slow search window at the top (normally it's at bottom)
83 and the value is minus the number of lines."
84 :type 'integer
85 :group 'isearch)
87 (defcustom search-slow-speed 1200
88 "*Highest terminal speed at which to use \"slow\" style incremental search.
89 This is the style where a one-line window is created to show the line
90 that the search has reached."
91 :type 'integer
92 :group 'isearch)
94 (defcustom search-upper-case 'not-yanks
95 "*If non-nil, upper case chars disable case fold searching.
96 That is, upper and lower case chars must match exactly.
97 This applies no matter where the chars come from, but does not
98 apply to chars in regexps that are prefixed with `\\'.
99 If this value is `not-yanks', yanked text is always downcased."
100 :type '(choice (const :tag "off" nil)
101 (const not-yanks)
102 (other :tag "on" t))
103 :group 'isearch)
105 (defcustom search-nonincremental-instead t
106 "*If non-nil, do a nonincremental search instead if exiting immediately.
107 Actually, `isearch-edit-string' is called to let you enter the search
108 string, and RET terminates editing and does a nonincremental search."
109 :type 'boolean
110 :group 'isearch)
112 (defcustom search-whitespace-regexp "\\s-+"
113 "*If non-nil, regular expression to match a sequence of whitespace chars.
114 This applies to regular expression incremental search.
115 When you put a space or spaces in the incremental regexp, it stands for
116 this, unless it is inside of a regexp construct such as [...] or *, + or ?.
117 You might want to use something like \"[ \\t\\r\\n]+\" instead.
118 In the Customization buffer, that is `[' followed by a space,
119 a tab, a carriage return (control-M), a newline, and `]+'."
120 :type 'regexp
121 :group 'isearch)
123 (defcustom search-invisible 'open
124 "If t incremental search can match hidden text.
125 A nil value means don't match invisible text.
126 When the value is `open', if the text matched is made invisible by
127 an overlay having an `invisible' property and that overlay has a property
128 `isearch-open-invisible', then incremental search will show the contents.
129 \(This applies when using `outline.el' and `hideshow.el'.)
130 See also `reveal-mode' if you want overlays to automatically be opened
131 whenever point is in one of them."
132 :type '(choice (const :tag "Match hidden text" t)
133 (const :tag "Open overlays" open)
134 (const :tag "Don't match hidden text" nil))
135 :group 'isearch)
137 (defcustom isearch-hide-immediately t
138 "If non-nil, re-hide an invisible match right away.
139 This variable makes a difference when `search-invisible' is set to `open'.
140 It means that after search makes some invisible text visible
141 to show the match, it makes the text invisible again when the match moves.
142 Ordinarily the text becomes invisible again at the end of the search."
143 :type 'boolean
144 :group 'isearch)
146 (defcustom isearch-resume-in-command-history nil
147 "*If non-nil, `isearch-resume' commands are added to the command history.
148 This allows you to resume earlier isearch sessions through the
149 command history."
150 :type 'boolean
151 :group 'isearch)
153 (defvar isearch-mode-hook nil
154 "Function(s) to call after starting up an incremental search.")
156 (defvar isearch-mode-end-hook nil
157 "Function(s) to call after terminating an incremental search.
158 When these functions are called, `isearch-mode-end-hook-quit'
159 is non-nil if the user quit the search.")
161 (defvar isearch-mode-end-hook-quit nil
162 "Non-nil while running `isearch-mode-end-hook' if user quit the search.")
164 (defvar isearch-wrap-function nil
165 "Function to call to wrap the search when search is failed.
166 If nil, move point to the beginning of the buffer for a forward search,
167 or to the end of the buffer for a backward search.")
169 (defvar isearch-push-state-function nil
170 "Function to save a function restoring the mode-specific isearch state
171 to the search status stack.")
173 ;; Search ring.
175 (defvar search-ring nil
176 "List of search string sequences.")
177 (defvar regexp-search-ring nil
178 "List of regular expression search string sequences.")
180 (defcustom search-ring-max 16
181 "*Maximum length of search ring before oldest elements are thrown away."
182 :type 'integer
183 :group 'isearch)
184 (defcustom regexp-search-ring-max 16
185 "*Maximum length of regexp search ring before oldest elements are thrown away."
186 :type 'integer
187 :group 'isearch)
189 (defvar search-ring-yank-pointer nil
190 "Index in `search-ring' of last string reused.
191 It is nil if none yet.")
192 (defvar regexp-search-ring-yank-pointer nil
193 "Index in `regexp-search-ring' of last string reused.
194 It is nil if none yet.")
196 (defcustom search-ring-update nil
197 "*Non-nil if advancing or retreating in the search ring should cause search.
198 Default value, nil, means edit the string instead."
199 :type 'boolean
200 :group 'isearch)
202 ;;; isearch highlight customization.
204 (defcustom search-highlight t
205 "*Non-nil means incremental search highlights the current match."
206 :type 'boolean
207 :group 'isearch)
209 (defface isearch
210 '((((class color) (min-colors 88) (background light))
211 ;; The background must not be too dark, for that means
212 ;; the character is hard to see when the cursor is there.
213 (:background "magenta3" :foreground "lightskyblue1"))
214 (((class color) (min-colors 88) (background dark))
215 (:background "palevioletred2" :foreground "brown4"))
216 (((class color) (min-colors 16))
217 (:background "magenta4" :foreground "cyan1"))
218 (((class color) (min-colors 8))
219 (:background "magenta4" :foreground "cyan1"))
220 (t (:inverse-video t)))
221 "Face for highlighting Isearch matches."
222 :group 'isearch
223 :group 'basic-faces)
224 (defvar isearch 'isearch)
226 (defcustom isearch-lazy-highlight t
227 "*Controls the lazy-highlighting during incremental search.
228 When non-nil, all text in the buffer matching the current search
229 string is highlighted lazily (see `lazy-highlight-initial-delay'
230 and `lazy-highlight-interval')."
231 :type 'boolean
232 :group 'lazy-highlight
233 :group 'isearch)
235 ;;; Lazy highlight customization.
237 (defgroup lazy-highlight nil
238 "Lazy highlighting feature for matching strings."
239 :prefix "lazy-highlight-"
240 :version "21.1"
241 :group 'isearch
242 :group 'matching)
244 (defcustom lazy-highlight-cleanup t
245 "*Controls whether to remove extra highlighting after a search.
246 If this is nil, extra highlighting can be \"manually\" removed with
247 \\[lazy-highlight-cleanup]."
248 :type 'boolean
249 :group 'lazy-highlight)
250 (define-obsolete-variable-alias 'isearch-lazy-highlight-cleanup
251 'lazy-highlight-cleanup
252 "22.1")
254 (defcustom lazy-highlight-initial-delay 0.25
255 "*Seconds to wait before beginning to lazily highlight all matches."
256 :type 'number
257 :group 'lazy-highlight)
258 (define-obsolete-variable-alias 'isearch-lazy-highlight-initial-delay
259 'lazy-highlight-initial-delay
260 "22.1")
262 (defcustom lazy-highlight-interval 0 ; 0.0625
263 "*Seconds between lazily highlighting successive matches."
264 :type 'number
265 :group 'lazy-highlight)
266 (define-obsolete-variable-alias 'isearch-lazy-highlight-interval
267 'lazy-highlight-interval
268 "22.1")
270 (defcustom lazy-highlight-max-at-a-time 20
271 "*Maximum matches to highlight at a time (for `lazy-highlight').
272 Larger values may reduce isearch's responsiveness to user input;
273 smaller values make matches highlight slowly.
274 A value of nil means highlight all matches."
275 :type '(choice (const :tag "All" nil)
276 (integer :tag "Some"))
277 :group 'lazy-highlight)
278 (define-obsolete-variable-alias 'isearch-lazy-highlight-max-at-a-time
279 'lazy-highlight-max-at-a-time
280 "22.1")
282 (defface lazy-highlight
283 '((((class color) (min-colors 88) (background light))
284 (:background "paleturquoise"))
285 (((class color) (min-colors 88) (background dark))
286 (:background "paleturquoise4"))
287 (((class color) (min-colors 16))
288 (:background "turquoise3"))
289 (((class color) (min-colors 8))
290 (:background "turquoise3"))
291 (t (:underline t)))
292 "Face for lazy highlighting of matches other than the current one."
293 :group 'lazy-highlight
294 :group 'basic-faces)
295 (put 'isearch-lazy-highlight-face 'face-alias 'lazy-highlight)
296 (defvar lazy-highlight-face 'lazy-highlight)
297 (define-obsolete-variable-alias 'isearch-lazy-highlight-face
298 'lazy-highlight-face
299 "22.1")
301 ;; Define isearch-mode keymap.
303 (defvar isearch-mode-map
304 (let* ((i 0)
305 (map (make-keymap)))
306 (or (vectorp (nth 1 map))
307 (char-table-p (nth 1 map))
308 (error "The initialization of isearch-mode-map must be updated"))
309 ;; Make all multibyte characters search for themselves.
310 (let ((l (generic-character-list))
311 (table (nth 1 map)))
312 (while l
313 (set-char-table-default table (car l) 'isearch-printing-char)
314 (setq l (cdr l))))
315 ;; Make function keys, etc, which aren't bound to a scrolling-function
316 ;; exit the search.
317 (define-key map [t] 'isearch-other-control-char)
318 ;; Control chars, by default, end isearch mode transparently.
319 ;; We need these explicit definitions because, in a dense keymap,
320 ;; the binding for t does not affect characters.
321 ;; We use a dense keymap to save space.
322 (while (< i ?\s)
323 (define-key map (make-string 1 i) 'isearch-other-control-char)
324 (setq i (1+ i)))
326 ;; Single-byte printing chars extend the search string by default.
327 (setq i ?\s)
328 (while (< i 256)
329 (define-key map (vector i) 'isearch-printing-char)
330 (setq i (1+ i)))
332 ;; To handle local bindings with meta char prefix keys, define
333 ;; another full keymap. This must be done for any other prefix
334 ;; keys as well, one full keymap per char of the prefix key. It
335 ;; would be simpler to disable the global keymap, and/or have a
336 ;; default local key binding for any key not otherwise bound.
337 (let ((meta-map (make-sparse-keymap)))
338 (define-key map (char-to-string meta-prefix-char) meta-map)
339 (define-key map [escape] meta-map))
340 (define-key map (vector meta-prefix-char t) 'isearch-other-meta-char)
342 ;; Several non-printing chars change the searching behavior.
343 (define-key map "\C-s" 'isearch-repeat-forward)
344 (define-key map "\C-r" 'isearch-repeat-backward)
345 ;; Define M-C-s and M-C-r like C-s and C-r so that the same key
346 ;; combinations can be used to repeat regexp isearches that can
347 ;; be used to start these searches.
348 (define-key map "\M-\C-s" 'isearch-repeat-forward)
349 (define-key map "\M-\C-r" 'isearch-repeat-backward)
350 (define-key map "\177" 'isearch-delete-char)
351 (define-key map "\C-g" 'isearch-abort)
353 ;; This assumes \e is the meta-prefix-char.
354 (or (= ?\e meta-prefix-char)
355 (error "Inconsistency in isearch.el"))
356 (define-key map "\e\e\e" 'isearch-cancel)
357 (define-key map [escape escape escape] 'isearch-cancel)
359 (define-key map "\C-q" 'isearch-quote-char)
361 (define-key map "\r" 'isearch-exit)
362 (define-key map "\C-j" 'isearch-printing-char)
363 (define-key map "\t" 'isearch-printing-char)
364 (define-key map [?\S-\ ] 'isearch-printing-char)
366 (define-key map "\C-w" 'isearch-yank-word-or-char)
367 (define-key map "\M-\C-w" 'isearch-del-char)
368 (define-key map "\M-\C-y" 'isearch-yank-char)
369 (define-key map "\C-y" 'isearch-yank-line)
371 ;; Turned off because I find I expect to get the global definition--rms.
372 ;; ;; Instead bind C-h to special help command for isearch-mode.
373 ;; (define-key map "\C-h" 'isearch-mode-help)
375 (define-key map "\M-n" 'isearch-ring-advance)
376 (define-key map "\M-p" 'isearch-ring-retreat)
377 (define-key map "\M-y" 'isearch-yank-kill)
379 (define-key map "\M-\t" 'isearch-complete)
381 ;; Pass frame events transparently so they won't exit the search.
382 ;; In particular, if we have more than one display open, then a
383 ;; switch-frame might be generated by someone typing at another keyboard.
384 (define-key map [switch-frame] nil)
385 (define-key map [delete-frame] nil)
386 (define-key map [iconify-frame] nil)
387 (define-key map [make-frame-visible] nil)
388 (define-key map [mouse-movement] nil)
389 (define-key map [language-change] nil)
391 ;; For searching multilingual text.
392 (define-key map "\C-\\" 'isearch-toggle-input-method)
393 (define-key map "\C-^" 'isearch-toggle-specified-input-method)
395 ;; People expect to be able to paste with the mouse.
396 (define-key map [mouse-2] #'isearch-mouse-2)
397 (define-key map [down-mouse-2] nil)
399 ;; Some bindings you may want to put in your isearch-mode-hook.
400 ;; Suggest some alternates...
401 (define-key map "\M-c" 'isearch-toggle-case-fold)
402 (define-key map "\M-r" 'isearch-toggle-regexp)
403 (define-key map "\M-e" 'isearch-edit-string)
405 (define-key map [?\M-%] 'isearch-query-replace)
406 (define-key map [?\C-\M-%] 'isearch-query-replace-regexp)
408 map)
409 "Keymap for `isearch-mode'.")
411 (defvar minibuffer-local-isearch-map
412 (let ((map (make-sparse-keymap)))
413 (set-keymap-parent map minibuffer-local-map)
414 (define-key map "\r" 'isearch-nonincremental-exit-minibuffer)
415 (define-key map "\M-\t" 'isearch-complete-edit)
416 (define-key map "\C-s" 'isearch-forward-exit-minibuffer)
417 (define-key map "\C-r" 'isearch-reverse-exit-minibuffer)
418 (define-key map "\C-f" 'isearch-yank-char-in-minibuffer)
419 (define-key map [right] 'isearch-yank-char-in-minibuffer)
420 map)
421 "Keymap for editing isearch strings in the minibuffer.")
423 ;; Internal variables declared globally for byte-compiler.
424 ;; These are all set with setq while isearching
425 ;; and bound locally while editing the search string.
427 (defvar isearch-forward nil) ; Searching in the forward direction.
428 (defvar isearch-regexp nil) ; Searching for a regexp.
429 (defvar isearch-word nil) ; Searching for words.
430 (defvar isearch-hidden nil) ; Non-nil if the string exists but is invisible.
432 (defvar isearch-cmds nil
433 "Stack of search status sets.
434 Each set is a vector of the form:
435 [STRING MESSAGE POINT SUCCESS FORWARD OTHER-END WORD
436 INVALID-REGEXP WRAPPED BARRIER WITHIN-BRACKETS CASE-FOLD-SEARCH]")
438 (defvar isearch-string "") ; The current search string.
439 (defvar isearch-message "") ; text-char-description version of isearch-string
441 (defvar isearch-success t) ; Searching is currently successful.
442 (defvar isearch-error nil) ; Error message for failed search.
443 (defvar isearch-other-end nil) ; Start (end) of match if forward (backward).
444 (defvar isearch-wrapped nil) ; Searching restarted from the top (bottom).
445 (defvar isearch-barrier 0)
446 (defvar isearch-just-started nil)
447 (defvar isearch-start-hscroll 0) ; hscroll when starting the search.
449 ; case-fold-search while searching.
450 ; either nil, t, or 'yes. 'yes means the same as t except that mixed
451 ; case in the search string is ignored.
452 (defvar isearch-case-fold-search nil)
454 (defvar isearch-last-case-fold-search nil)
456 ;; Used to save default value while isearch is active
457 (defvar isearch-original-minibuffer-message-timeout nil)
459 (defvar isearch-adjusted nil)
460 (defvar isearch-slow-terminal-mode nil)
461 ;; If t, using a small window.
462 (defvar isearch-small-window nil)
463 (defvar isearch-opoint 0)
464 ;; The window configuration active at the beginning of the search.
465 (defvar isearch-window-configuration nil)
467 ;; Flag to indicate a yank occurred, so don't move the cursor.
468 (defvar isearch-yank-flag nil)
470 ;; A function to be called after each input character is processed.
471 ;; (It is not called after characters that exit the search.)
472 ;; It is only set from an optional argument to `isearch-mode'.
473 (defvar isearch-op-fun nil)
475 ;; Is isearch-mode in a recursive edit for modal searching.
476 (defvar isearch-recursive-edit nil)
478 ;; Should isearch be terminated after doing one search?
479 (defvar isearch-nonincremental nil)
481 ;; New value of isearch-forward after isearch-edit-string.
482 (defvar isearch-new-forward nil)
484 ;; Accumulate here the overlays opened during searching.
485 (defvar isearch-opened-overlays nil)
487 ;; The value of input-method-function when isearch is invoked.
488 (defvar isearch-input-method-function nil)
490 ;; A flag to tell if input-method-function is locally bound when
491 ;; isearch is invoked.
492 (defvar isearch-input-method-local-p nil)
494 ;; Minor-mode-alist changes - kind of redundant with the
495 ;; echo area, but if isearching in multiple windows, it can be useful.
497 (or (assq 'isearch-mode minor-mode-alist)
498 (nconc minor-mode-alist
499 (list '(isearch-mode isearch-mode))))
501 (defvar isearch-mode nil) ;; Name of the minor mode, if non-nil.
502 (make-variable-buffer-local 'isearch-mode)
504 (define-key global-map "\C-s" 'isearch-forward)
505 (define-key esc-map "\C-s" 'isearch-forward-regexp)
506 (define-key global-map "\C-r" 'isearch-backward)
507 (define-key esc-map "\C-r" 'isearch-backward-regexp)
509 ;; Entry points to isearch-mode.
511 (defun isearch-forward (&optional regexp-p no-recursive-edit)
513 Do incremental search forward.
514 With a prefix argument, do an incremental regular expression search instead.
515 \\<isearch-mode-map>
516 As you type characters, they add to the search string and are found.
517 The following non-printing keys are bound in `isearch-mode-map'.
519 Type \\[isearch-delete-char] to cancel last input item from end of search string.
520 Type \\[isearch-exit] to exit, leaving point at location found.
521 Type LFD (C-j) to match end of line.
522 Type \\[isearch-repeat-forward] to search again forward,\
523 \\[isearch-repeat-backward] to search again backward.
524 Type \\[isearch-yank-word-or-char] to yank word from buffer onto end of search\
525 string and search for it.
526 Type \\[isearch-del-char] to delete character from end of search string.
527 Type \\[isearch-yank-char] to yank char from buffer onto end of search\
528 string and search for it.
529 Type \\[isearch-yank-line] to yank rest of line onto end of search string\
530 and search for it.
531 Type \\[isearch-yank-kill] to yank last killed text onto end of search string\
532 and search for it.
533 Type \\[isearch-quote-char] to quote control character to search for it.
534 \\[isearch-abort] while searching or when search has failed cancels input\
535 back to what has
536 been found successfully.
537 \\[isearch-abort] when search is successful aborts and moves point to\
538 starting point.
540 If you try to exit with the search string still empty, it invokes
541 nonincremental search.
543 Type \\[isearch-query-replace] to start `query-replace' with string to\
544 replace from last search string.
545 Type \\[isearch-query-replace-regexp] to start `query-replace-regexp'\
546 with string to replace from last search string.
548 Type \\[isearch-toggle-case-fold] to toggle search case-sensitivity.
549 Type \\[isearch-toggle-regexp] to toggle regular-expression mode.
550 Type \\[isearch-edit-string] to edit the search string in the minibuffer.
552 Also supported is a search ring of the previous 16 search strings.
553 Type \\[isearch-ring-advance] to search for the next item in the search ring.
554 Type \\[isearch-ring-retreat] to search for the previous item in the search\
555 ring.
556 Type \\[isearch-complete] to complete the search string using the search ring.
558 If an input method is turned on in the current buffer, that input
559 method is also active while you are typing characters to search. To
560 toggle the input method, type \\[isearch-toggle-input-method]. It
561 also toggles the input method in the current buffer.
563 To use a different input method for searching, type
564 \\[isearch-toggle-specified-input-method], and specify an input method
565 you want to use.
567 The above keys, bound in `isearch-mode-map', are often controlled by
568 options; do \\[apropos] on search-.* to find them.
569 Other control and meta characters terminate the search
570 and are then executed normally (depending on `search-exit-option').
571 Likewise for function keys and mouse button events.
573 If this function is called non-interactively, it does not return to
574 the calling function until the search is done."
576 (interactive "P\np")
577 (isearch-mode t (not (null regexp-p)) nil (not no-recursive-edit)))
579 (defun isearch-forward-regexp (&optional not-regexp no-recursive-edit)
581 Do incremental search forward for regular expression.
582 With a prefix argument, do a regular string search instead.
583 Like ordinary incremental search except that your input
584 is treated as a regexp. See \\[isearch-forward] for more info.
586 In regexp incremental searches, a space or spaces normally matches
587 any whitespace (the variable `search-whitespace-regexp' controls
588 precisely what that means). If you want to search for a literal space
589 and nothing else, enter C-q SPC."
590 (interactive "P\np")
591 (isearch-mode t (null not-regexp) nil (not no-recursive-edit)))
593 (defun isearch-backward (&optional regexp-p no-recursive-edit)
595 Do incremental search backward.
596 With a prefix argument, do a regular expression search instead.
597 See \\[isearch-forward] for more information."
598 (interactive "P\np")
599 (isearch-mode nil (not (null regexp-p)) nil (not no-recursive-edit)))
601 (defun isearch-backward-regexp (&optional not-regexp no-recursive-edit)
603 Do incremental search backward for regular expression.
604 With a prefix argument, do a regular string search instead.
605 Like ordinary incremental search except that your input
606 is treated as a regexp. See \\[isearch-forward] for more info."
607 (interactive "P\np")
608 (isearch-mode nil (null not-regexp) nil (not no-recursive-edit)))
611 (defun isearch-mode-help ()
612 (interactive)
613 (describe-function 'isearch-forward)
614 (isearch-update))
617 ;; isearch-mode only sets up incremental search for the minor mode.
618 ;; All the work is done by the isearch-mode commands.
620 ;; Not used yet:
621 ;;(defvar isearch-commands '(isearch-forward isearch-backward
622 ;; isearch-forward-regexp isearch-backward-regexp)
623 ;; "List of commands for which isearch-mode does not recursive-edit.")
626 (defun isearch-mode (forward &optional regexp op-fun recursive-edit word-p)
627 "Start isearch minor mode. Called by `isearch-forward', etc.
629 \\{isearch-mode-map}"
631 ;; Initialize global vars.
632 (setq isearch-forward forward
633 isearch-regexp regexp
634 isearch-word word-p
635 isearch-op-fun op-fun
636 isearch-last-case-fold-search isearch-case-fold-search
637 isearch-case-fold-search case-fold-search
638 isearch-string ""
639 isearch-message ""
640 isearch-cmds nil
641 isearch-success t
642 isearch-wrapped nil
643 isearch-barrier (point)
644 isearch-adjusted nil
645 isearch-yank-flag nil
646 isearch-error nil
647 isearch-slow-terminal-mode (and (<= baud-rate search-slow-speed)
648 (> (window-height)
649 (* 4
650 (abs search-slow-window-lines))))
651 isearch-other-end nil
652 isearch-small-window nil
653 isearch-just-started t
654 isearch-start-hscroll (window-hscroll)
656 isearch-opoint (point)
657 search-ring-yank-pointer nil
658 isearch-opened-overlays nil
659 isearch-input-method-function input-method-function
660 isearch-input-method-local-p (local-variable-p 'input-method-function)
661 regexp-search-ring-yank-pointer nil
663 ;; Save the original value of `minibuffer-message-timeout', and
664 ;; set it to nil so that isearch's messages don't get timed out.
665 isearch-original-minibuffer-message-timeout minibuffer-message-timeout
666 minibuffer-message-timeout nil)
668 ;; We must bypass input method while reading key. When a user type
669 ;; printable character, appropriate input method is turned on in
670 ;; minibuffer to read multibyte characters.
671 (or isearch-input-method-local-p
672 (make-local-variable 'input-method-function))
673 (setq input-method-function nil)
675 (looking-at "")
676 (setq isearch-window-configuration
677 (if isearch-slow-terminal-mode (current-window-configuration) nil))
679 ;; Maybe make minibuffer frame visible and/or raise it.
680 (let ((frame (window-frame (minibuffer-window))))
681 (unless (memq (frame-live-p frame) '(nil t))
682 (unless (frame-visible-p frame)
683 (make-frame-visible frame))
684 (if minibuffer-auto-raise
685 (raise-frame frame))))
687 (setq isearch-mode " Isearch") ;; forward? regexp?
688 (force-mode-line-update)
690 (isearch-push-state)
692 (setq overriding-terminal-local-map isearch-mode-map)
693 (isearch-update)
694 (run-hooks 'isearch-mode-hook)
696 (add-hook 'mouse-leave-buffer-hook 'isearch-done)
697 (add-hook 'kbd-macro-termination-hook 'isearch-done)
699 ;; isearch-mode can be made modal (in the sense of not returning to
700 ;; the calling function until searching is completed) by entering
701 ;; a recursive-edit and exiting it when done isearching.
702 (if recursive-edit
703 (let ((isearch-recursive-edit t))
704 (recursive-edit)))
705 isearch-success)
708 ;; Some high level utilities. Others below.
710 (defun isearch-update ()
711 ;; Called after each command to update the display.
712 (if (and (null unread-command-events)
713 (null executing-kbd-macro))
714 (progn
715 (if (not (input-pending-p))
716 (isearch-message))
717 (if (and isearch-slow-terminal-mode
718 (not (or isearch-small-window
719 (pos-visible-in-window-p))))
720 (let ((found-point (point)))
721 (setq isearch-small-window t)
722 (move-to-window-line 0)
723 (let ((window-min-height 1))
724 (split-window nil (if (< search-slow-window-lines 0)
725 (1+ (- search-slow-window-lines))
726 (- (window-height)
727 (1+ search-slow-window-lines)))))
728 (if (< search-slow-window-lines 0)
729 (progn (vertical-motion (- 1 search-slow-window-lines))
730 (set-window-start (next-window) (point))
731 (set-window-hscroll (next-window)
732 (window-hscroll))
733 (set-window-hscroll (selected-window) 0))
734 (other-window 1))
735 (goto-char found-point))
736 ;; Keep same hscrolling as at the start of the search when possible
737 (let ((current-scroll (window-hscroll)))
738 (set-window-hscroll (selected-window) isearch-start-hscroll)
739 (unless (pos-visible-in-window-p)
740 (set-window-hscroll (selected-window) current-scroll))))
741 (if isearch-other-end
742 (if (< isearch-other-end (point)) ; isearch-forward?
743 (isearch-highlight isearch-other-end (point))
744 (isearch-highlight (point) isearch-other-end))
745 (isearch-dehighlight))
747 (setq ;; quit-flag nil not for isearch-mode
748 isearch-adjusted nil
749 isearch-yank-flag nil)
750 (when isearch-lazy-highlight
751 (isearch-lazy-highlight-new-loop))
752 ;; We must prevent the point moving to the end of composition when a
753 ;; part of the composition has just been searched.
754 (setq disable-point-adjustment t))
756 (defun isearch-done (&optional nopush edit)
757 "Exit Isearch mode.
758 For successful search, pass no args.
759 For a failing search, NOPUSH is t.
760 For going to the minibuffer to edit the search string,
761 NOPUSH is t and EDIT is t."
763 (if isearch-resume-in-command-history
764 (let ((command `(isearch-resume ,isearch-string ,isearch-regexp
765 ,isearch-word ,isearch-forward
766 ,isearch-message
767 ',isearch-case-fold-search)))
768 (unless (equal (car command-history) command)
769 (setq command-history (cons command command-history)))))
771 (remove-hook 'mouse-leave-buffer-hook 'isearch-done)
772 (remove-hook 'kbd-macro-termination-hook 'isearch-done)
773 (setq isearch-lazy-highlight-start nil)
775 ;; Called by all commands that terminate isearch-mode.
776 ;; If NOPUSH is non-nil, we don't push the string on the search ring.
777 (setq overriding-terminal-local-map nil)
778 ;; (setq pre-command-hook isearch-old-pre-command-hook) ; for lemacs
779 (setq minibuffer-message-timeout isearch-original-minibuffer-message-timeout)
780 (isearch-dehighlight)
781 (lazy-highlight-cleanup lazy-highlight-cleanup)
782 (let ((found-start (window-start (selected-window)))
783 (found-point (point)))
784 (if isearch-window-configuration
785 (set-window-configuration isearch-window-configuration))
787 (if isearch-small-window
788 (goto-char found-point)
789 ;; Exiting the save-window-excursion clobbers window-start; restore it.
790 (set-window-start (selected-window) found-start t)))
792 (setq isearch-mode nil)
793 (if isearch-input-method-local-p
794 (setq input-method-function isearch-input-method-function)
795 (kill-local-variable 'input-method-function))
797 (force-mode-line-update)
799 ;; If we ended in the middle of some intangible text,
800 ;; move to the further end of that intangible text.
801 (let ((after (if (eobp) nil
802 (get-text-property (point) 'intangible)))
803 (before (if (bobp) nil
804 (get-text-property (1- (point)) 'intangible))))
805 (when (and before after (eq before after))
806 (if isearch-forward
807 (goto-char (next-single-property-change (point) 'intangible))
808 (goto-char (previous-single-property-change (point) 'intangible)))))
810 (if (and (> (length isearch-string) 0) (not nopush))
811 ;; Update the ring data.
812 (isearch-update-ring isearch-string isearch-regexp))
814 (let ((isearch-mode-end-hook-quit (and nopush (not edit))))
815 (run-hooks 'isearch-mode-end-hook))
817 ;; If there was movement, mark the starting position.
818 ;; Maybe should test difference between and set mark iff > threshold.
819 (if (/= (point) isearch-opoint)
820 (or (and transient-mark-mode mark-active)
821 (progn
822 (push-mark isearch-opoint t)
823 (or executing-kbd-macro (> (minibuffer-depth) 0)
824 (message "Mark saved where search started")))))
826 (and (not edit) isearch-recursive-edit (exit-recursive-edit)))
828 (defun isearch-update-ring (string &optional regexp)
829 "Add STRING to the beginning of the search ring.
830 REGEXP says which ring to use."
831 (if regexp
832 (if (or (null regexp-search-ring)
833 (not (string= string (car regexp-search-ring))))
834 (progn
835 (push string regexp-search-ring)
836 (if (> (length regexp-search-ring) regexp-search-ring-max)
837 (setcdr (nthcdr (1- search-ring-max) regexp-search-ring)
838 nil))))
839 (if (or (null search-ring)
840 (not (string= string (car search-ring))))
841 (progn
842 (push string search-ring)
843 (if (> (length search-ring) search-ring-max)
844 (setcdr (nthcdr (1- search-ring-max) search-ring) nil))))))
846 ;; Switching buffers should first terminate isearch-mode.
847 ;; ;; For Emacs 19, the frame switch event is handled.
848 ;; (defun isearch-switch-frame-handler ()
849 ;; (interactive) ;; Is this necessary?
850 ;; ;; First terminate isearch-mode.
851 ;; (isearch-done)
852 ;; (isearch-clean-overlays)
853 ;; (handle-switch-frame (car (cdr last-command-char))))
856 ;; The search status structure and stack.
858 (defsubst isearch-string-state (frame)
859 "Return the search string in FRAME."
860 (aref frame 0))
861 (defsubst isearch-message-state (frame)
862 "Return the search string to display to the user in FRAME."
863 (aref frame 1))
864 (defsubst isearch-point-state (frame)
865 "Return the point in FRAME."
866 (aref frame 2))
867 (defsubst isearch-success-state (frame)
868 "Return the success flag in FRAME."
869 (aref frame 3))
870 (defsubst isearch-forward-state (frame)
871 "Return the searching-forward flag in FRAME."
872 (aref frame 4))
873 (defsubst isearch-other-end-state (frame)
874 "Return the other end of the match in FRAME."
875 (aref frame 5))
876 (defsubst isearch-word-state (frame)
877 "Return the search-by-word flag in FRAME."
878 (aref frame 6))
879 (defsubst isearch-error-state (frame)
880 "Return the regexp error message in FRAME, or nil if its regexp is valid."
881 (aref frame 7))
882 (defsubst isearch-wrapped-state (frame)
883 "Return the search-wrapped flag in FRAME."
884 (aref frame 8))
885 (defsubst isearch-barrier-state (frame)
886 "Return the barrier value in FRAME."
887 (aref frame 9))
888 (defsubst isearch-case-fold-search-state (frame)
889 "Return the case-folding flag in FRAME."
890 (aref frame 10))
891 (defsubst isearch-pop-fun-state (frame)
892 "Return the function restoring the mode-specific isearch state in FRAME."
893 (aref frame 11))
895 (defun isearch-top-state ()
896 (let ((cmd (car isearch-cmds)))
897 (setq isearch-string (isearch-string-state cmd)
898 isearch-message (isearch-message-state cmd)
899 isearch-success (isearch-success-state cmd)
900 isearch-forward (isearch-forward-state cmd)
901 isearch-other-end (isearch-other-end-state cmd)
902 isearch-word (isearch-word-state cmd)
903 isearch-error (isearch-error-state cmd)
904 isearch-wrapped (isearch-wrapped-state cmd)
905 isearch-barrier (isearch-barrier-state cmd)
906 isearch-case-fold-search (isearch-case-fold-search-state cmd))
907 (if (functionp (isearch-pop-fun-state cmd))
908 (funcall (isearch-pop-fun-state cmd) cmd))
909 (goto-char (isearch-point-state cmd))))
911 (defun isearch-pop-state ()
912 (setq isearch-cmds (cdr isearch-cmds))
913 (isearch-top-state))
915 (defun isearch-push-state ()
916 (setq isearch-cmds
917 (cons (vector isearch-string isearch-message (point)
918 isearch-success isearch-forward isearch-other-end
919 isearch-word
920 isearch-error isearch-wrapped isearch-barrier
921 isearch-case-fold-search
922 (if isearch-push-state-function
923 (funcall isearch-push-state-function)))
924 isearch-cmds)))
927 ;; Commands active while inside of the isearch minor mode.
929 (defun isearch-exit ()
930 "Exit search normally.
931 However, if this is the first command after starting incremental
932 search and `search-nonincremental-instead' is non-nil, do a
933 nonincremental search instead via `isearch-edit-string'."
934 (interactive)
935 (if (and search-nonincremental-instead
936 (= 0 (length isearch-string)))
937 (let ((isearch-nonincremental t))
938 (isearch-edit-string)))
939 (isearch-done)
940 (isearch-clean-overlays))
943 (defun isearch-edit-string ()
944 "Edit the search string in the minibuffer.
945 The following additional command keys are active while editing.
946 \\<minibuffer-local-isearch-map>
947 \\[exit-minibuffer] to resume incremental searching with the edited string.
948 \\[isearch-nonincremental-exit-minibuffer] to do one nonincremental search.
949 \\[isearch-forward-exit-minibuffer] to resume isearching forward.
950 \\[isearch-reverse-exit-minibuffer] to resume isearching backward.
951 \\[isearch-complete-edit] to complete the search string using the search ring.
952 \\<isearch-mode-map>
953 If first char entered is \\[isearch-yank-word-or-char], then do word search instead."
955 ;; This code is very hairy for several reasons, explained in the code.
956 ;; Mainly, isearch-mode must be terminated while editing and then restarted.
957 ;; If there were a way to catch any change of buffer from the minibuffer,
958 ;; this could be simplified greatly.
959 ;; Editing doesn't back up the search point. Should it?
960 (interactive)
961 (condition-case err
962 (progn
963 (let ((isearch-nonincremental isearch-nonincremental)
965 ;; Locally bind all isearch global variables to protect them
966 ;; from recursive isearching.
967 ;; isearch-string -message and -forward are not bound
968 ;; so they may be changed. Instead, save the values.
969 (isearch-new-string isearch-string)
970 (isearch-new-message isearch-message)
971 (isearch-new-forward isearch-forward)
972 (isearch-new-word isearch-word)
974 (isearch-regexp isearch-regexp)
975 (isearch-op-fun isearch-op-fun)
976 (isearch-cmds isearch-cmds)
977 (isearch-success isearch-success)
978 (isearch-wrapped isearch-wrapped)
979 (isearch-barrier isearch-barrier)
980 (isearch-adjusted isearch-adjusted)
981 (isearch-yank-flag isearch-yank-flag)
982 (isearch-error isearch-error)
983 ;;; Don't bind this. We want isearch-search, below, to set it.
984 ;;; And the old value won't matter after that.
985 ;;; (isearch-other-end isearch-other-end)
986 ;;; Perhaps some of these other variables should be bound for a
987 ;;; shorter period, ending before the next isearch-search.
988 ;;; But there doesn't seem to be a real bug, so let's not risk it now.
989 (isearch-opoint isearch-opoint)
990 (isearch-slow-terminal-mode isearch-slow-terminal-mode)
991 (isearch-small-window isearch-small-window)
992 (isearch-recursive-edit isearch-recursive-edit)
993 ;; Save current configuration so we can restore it here.
994 (isearch-window-configuration (current-window-configuration))
996 ;; Temporarily restore `minibuffer-message-timeout'.
997 (minibuffer-message-timeout
998 isearch-original-minibuffer-message-timeout)
999 (isearch-original-minibuffer-message-timeout
1000 isearch-original-minibuffer-message-timeout)
1003 ;; Actually terminate isearching until editing is done.
1004 ;; This is so that the user can do anything without failure,
1005 ;; like switch buffers and start another isearch, and return.
1006 (condition-case err
1007 (isearch-done t t)
1008 (exit nil)) ; was recursive editing
1010 (isearch-message) ;; for read-char
1011 (unwind-protect
1012 (let* (;; Why does following read-char echo?
1013 ;;(echo-keystrokes 0) ;; not needed with above message
1014 (e (let ((cursor-in-echo-area t))
1015 (read-event)))
1016 ;; Binding minibuffer-history-symbol to nil is a work-around
1017 ;; for some incompatibility with gmhist.
1018 (minibuffer-history-symbol)
1019 (message-log-max nil))
1020 ;; If the first character the user types when we prompt them
1021 ;; for a string is the yank-word character, then go into
1022 ;; word-search mode. Otherwise unread that character and
1023 ;; read a key the normal way.
1024 ;; Word search does not apply (yet) to regexp searches,
1025 ;; no check is made here.
1026 (message "%s" (isearch-message-prefix nil nil t))
1027 (if (memq (lookup-key isearch-mode-map (vector e))
1028 '(isearch-yank-word
1029 isearch-yank-word-or-char))
1030 (setq isearch-word t;; so message-prefix is right
1031 isearch-new-word t)
1032 (cancel-kbd-macro-events)
1033 (isearch-unread e))
1034 (setq cursor-in-echo-area nil)
1035 (setq isearch-new-string
1036 (read-from-minibuffer
1037 (isearch-message-prefix nil nil isearch-nonincremental)
1038 isearch-string
1039 minibuffer-local-isearch-map nil
1040 (if isearch-regexp 'regexp-search-ring 'search-ring)
1041 nil t)
1042 isearch-new-message
1043 (mapconcat 'isearch-text-char-description
1044 isearch-new-string "")))
1045 ;; Always resume isearching by restarting it.
1046 (isearch-mode isearch-forward
1047 isearch-regexp
1048 isearch-op-fun
1050 isearch-word)
1052 ;; Copy new local values to isearch globals
1053 (setq isearch-string isearch-new-string
1054 isearch-message isearch-new-message
1055 isearch-forward isearch-new-forward
1056 isearch-word isearch-new-word))
1058 ;; Empty isearch-string means use default.
1059 (if (= 0 (length isearch-string))
1060 (setq isearch-string (or (car (if isearch-regexp
1061 regexp-search-ring
1062 search-ring))
1065 isearch-message
1066 (mapconcat 'isearch-text-char-description
1067 isearch-string ""))
1068 ;; This used to set the last search string,
1069 ;; but I think it is not right to do that here.
1070 ;; Only the string actually used should be saved.
1073 ;; Push the state as of before this C-s.
1074 (isearch-push-state)
1076 ;; Reinvoke the pending search.
1077 (isearch-search)
1078 (isearch-update)
1079 (if isearch-nonincremental
1080 (progn
1081 ;; (sit-for 1) ;; needed if isearch-done does: (message "")
1082 (isearch-done)
1083 ;; The search done message is confusing when the string
1084 ;; is empty, so erase it.
1085 (if (equal isearch-string "")
1086 (message "")))))
1088 (quit ; handle abort-recursive-edit
1089 (isearch-abort) ;; outside of let to restore outside global values
1092 (defun isearch-nonincremental-exit-minibuffer ()
1093 (interactive)
1094 (setq isearch-nonincremental t)
1095 (exit-minibuffer))
1097 (defun isearch-forward-exit-minibuffer ()
1098 (interactive)
1099 (setq isearch-new-forward t)
1100 (exit-minibuffer))
1102 (defun isearch-reverse-exit-minibuffer ()
1103 (interactive)
1104 (setq isearch-new-forward nil)
1105 (exit-minibuffer))
1107 (defun isearch-cancel ()
1108 "Terminate the search and go back to the starting point."
1109 (interactive)
1110 (if (functionp (isearch-pop-fun-state (car (last isearch-cmds))))
1111 (funcall (isearch-pop-fun-state (car (last isearch-cmds)))
1112 (car (last isearch-cmds))))
1113 (goto-char isearch-opoint)
1114 (isearch-done t) ; exit isearch
1115 (isearch-clean-overlays)
1116 (signal 'quit nil)) ; and pass on quit signal
1118 (defun isearch-abort ()
1119 "Abort incremental search mode if searching is successful, signaling quit.
1120 Otherwise, revert to previous successful search and continue searching.
1121 Use `isearch-exit' to quit without signaling."
1122 (interactive)
1123 ;; (ding) signal instead below, if quitting
1124 (discard-input)
1125 (if isearch-success
1126 ;; If search is successful, move back to starting point
1127 ;; and really do quit.
1128 (progn
1129 (setq isearch-success nil)
1130 (isearch-cancel))
1131 ;; If search is failing, or has an incomplete regexp,
1132 ;; rub out until it is once more successful.
1133 (while (or (not isearch-success) isearch-error)
1134 (isearch-pop-state))
1135 (isearch-update)))
1137 (defun isearch-repeat (direction)
1138 ;; Utility for isearch-repeat-forward and -backward.
1139 (if (eq isearch-forward (eq direction 'forward))
1140 ;; C-s in forward or C-r in reverse.
1141 (if (equal isearch-string "")
1142 ;; If search string is empty, use last one.
1143 (if (null (if isearch-regexp regexp-search-ring search-ring))
1144 (setq isearch-error "No previous search string")
1145 (setq isearch-string
1146 (if isearch-regexp
1147 (car regexp-search-ring)
1148 (car search-ring))
1149 isearch-message
1150 (mapconcat 'isearch-text-char-description
1151 isearch-string "")
1152 isearch-case-fold-search isearch-last-case-fold-search))
1153 ;; If already have what to search for, repeat it.
1154 (or isearch-success
1155 (progn
1156 ;; Set isearch-wrapped before calling isearch-wrap-function
1157 (setq isearch-wrapped t)
1158 (if isearch-wrap-function
1159 (funcall isearch-wrap-function)
1160 (goto-char (if isearch-forward (point-min) (point-max)))))))
1161 ;; C-s in reverse or C-r in forward, change direction.
1162 (setq isearch-forward (not isearch-forward)
1163 isearch-success t))
1165 (setq isearch-barrier (point)) ; For subsequent \| if regexp.
1167 (if (equal isearch-string "")
1168 (setq isearch-success t)
1169 (if (and isearch-success
1170 (equal (point) isearch-other-end)
1171 (not isearch-just-started))
1172 ;; If repeating a search that found
1173 ;; an empty string, ensure we advance.
1174 (if (if isearch-forward (eobp) (bobp))
1175 ;; If there's nowhere to advance to, fail (and wrap next time).
1176 (progn
1177 (setq isearch-success nil)
1178 (ding))
1179 (forward-char (if isearch-forward 1 -1))
1180 (isearch-search))
1181 (isearch-search)))
1183 (isearch-push-state)
1184 (isearch-update))
1186 (defun isearch-repeat-forward ()
1187 "Repeat incremental search forwards."
1188 (interactive)
1189 (isearch-repeat 'forward))
1191 (defun isearch-repeat-backward ()
1192 "Repeat incremental search backwards."
1193 (interactive)
1194 (isearch-repeat 'backward))
1196 (defun isearch-toggle-regexp ()
1197 "Toggle regexp searching on or off."
1198 ;; The status stack is left unchanged.
1199 (interactive)
1200 (setq isearch-regexp (not isearch-regexp))
1201 (if isearch-regexp (setq isearch-word nil))
1202 (setq isearch-success t isearch-adjusted t)
1203 (isearch-update))
1205 (defun isearch-toggle-case-fold ()
1206 "Toggle case folding in searching on or off."
1207 (interactive)
1208 (setq isearch-case-fold-search
1209 (if isearch-case-fold-search nil 'yes))
1210 (let ((message-log-max nil))
1211 (message "%s%s [case %ssensitive]"
1212 (isearch-message-prefix nil nil isearch-nonincremental)
1213 isearch-message
1214 (if isearch-case-fold-search "in" "")))
1215 (setq isearch-success t isearch-adjusted t)
1216 (sit-for 1)
1217 (isearch-update))
1219 (defun isearch-query-replace (&optional regexp-flag)
1220 "Start query-replace with string to replace from last search string."
1221 (interactive)
1222 (barf-if-buffer-read-only)
1223 (if regexp-flag (setq isearch-regexp t))
1224 (let ((case-fold-search isearch-case-fold-search))
1225 (isearch-done)
1226 (isearch-clean-overlays)
1227 (if (and isearch-other-end
1228 (< isearch-other-end (point))
1229 (not (and transient-mark-mode mark-active
1230 (< (mark) (point)))))
1231 (goto-char isearch-other-end))
1232 (set query-replace-from-history-variable
1233 (cons isearch-string
1234 (symbol-value query-replace-from-history-variable)))
1235 (perform-replace
1236 isearch-string
1237 (query-replace-read-to
1238 isearch-string
1239 (if isearch-regexp "Query replace regexp" "Query replace")
1240 isearch-regexp)
1241 t isearch-regexp isearch-word nil nil
1242 (if (and transient-mark-mode mark-active) (region-beginning))
1243 (if (and transient-mark-mode mark-active) (region-end)))))
1245 (defun isearch-query-replace-regexp ()
1246 "Start query-replace-regexp with string to replace from last search string."
1247 (interactive)
1248 (isearch-query-replace t))
1251 (defun isearch-delete-char ()
1252 "Discard last input item and move point back.
1253 If no previous match was done, just beep."
1254 (interactive)
1255 (if (null (cdr isearch-cmds))
1256 (ding)
1257 (isearch-pop-state))
1258 (isearch-update))
1260 (defun isearch-del-char (&optional arg)
1261 "Delete character from end of search string and search again.
1262 If search string is empty, just beep."
1263 (interactive "p")
1264 (if (= 0 (length isearch-string))
1265 (ding)
1266 (setq isearch-string (substring isearch-string 0 (- (or arg 1)))
1267 isearch-message (mapconcat 'isearch-text-char-description
1268 isearch-string "")
1269 ;; Don't move cursor in reverse search.
1270 isearch-yank-flag t))
1271 (isearch-search-and-update))
1273 (defun isearch-yank-string (string)
1274 "Pull STRING into search string."
1275 ;; Downcase the string if not supposed to case-fold yanked strings.
1276 (if (and isearch-case-fold-search
1277 (eq 'not-yanks search-upper-case))
1278 (setq string (downcase string)))
1279 (if isearch-regexp (setq string (regexp-quote string)))
1280 (setq isearch-string (concat isearch-string string)
1281 isearch-message
1282 (concat isearch-message
1283 (mapconcat 'isearch-text-char-description
1284 string ""))
1285 ;; Don't move cursor in reverse search.
1286 isearch-yank-flag t)
1287 (isearch-search-and-update))
1289 (defun isearch-yank-kill ()
1290 "Pull string from kill ring into search string."
1291 (interactive)
1292 (isearch-yank-string (current-kill 0)))
1294 (defun isearch-yank-x-selection ()
1295 "Pull current X selection into search string."
1296 (interactive)
1297 (isearch-yank-string (x-get-selection)))
1300 (defun isearch-mouse-2 (click)
1301 "Handle mouse-2 in Isearch mode.
1302 For a click in the echo area, invoke `isearch-yank-x-selection'.
1303 Otherwise invoke whatever mouse-2 is bound to outside of Isearch."
1304 (interactive "e")
1305 (let* ((w (posn-window (event-start click)))
1306 (overriding-terminal-local-map nil)
1307 (key (vector (event-basic-type click)))
1308 ;; FIXME: `key-binding' should accept an event as argument
1309 ;; and do all the overlay/text-properties lookup etc...
1310 (binding (with-current-buffer
1311 (if (window-live-p w) (window-buffer w) (current-buffer))
1312 (key-binding key))))
1313 (if (and (window-minibuffer-p w)
1314 (not (minibuffer-window-active-p w))) ; in echo area
1315 (isearch-yank-x-selection)
1316 (when (functionp binding)
1317 (call-interactively binding)))))
1320 (defun isearch-yank-internal (jumpform)
1321 "Pull the text from point to the point reached by JUMPFORM.
1322 JUMPFORM is a lambda expression that takes no arguments and returns a
1323 buffer position, possibly having moved point to that position. For
1324 example, it might move point forward by a word and return point, or it
1325 might return the position of the end of the line."
1326 (isearch-yank-string
1327 (save-excursion
1328 (and (not isearch-forward) isearch-other-end
1329 (goto-char isearch-other-end))
1330 (buffer-substring-no-properties (point) (funcall jumpform)))))
1332 (defun isearch-yank-char-in-minibuffer (&optional arg)
1333 "Pull next character from buffer into end of search string in minibuffer."
1334 (interactive "p")
1335 (if (eobp)
1336 (insert
1337 (save-excursion
1338 (set-buffer (cadr (buffer-list)))
1339 (buffer-substring-no-properties
1340 (point) (progn (forward-char arg) (point)))))
1341 (forward-char arg)))
1343 (defun isearch-yank-char (&optional arg)
1344 "Pull next character from buffer into search string."
1345 (interactive "p")
1346 (isearch-yank-internal (lambda () (forward-char arg) (point))))
1348 (defun isearch-yank-word-or-char ()
1349 "Pull next character or word from buffer into search string."
1350 (interactive)
1351 (isearch-yank-internal
1352 (lambda ()
1353 (if (or (= (char-syntax (or (char-after) 0)) ?w)
1354 (= (char-syntax (or (char-after (1+ (point))) 0)) ?w))
1355 (forward-word 1)
1356 (forward-char 1)) (point))))
1358 (defun isearch-yank-word ()
1359 "Pull next word from buffer into search string."
1360 (interactive)
1361 (isearch-yank-internal (lambda () (forward-word 1) (point))))
1363 (defun isearch-yank-line ()
1364 "Pull rest of line from buffer into search string."
1365 (interactive)
1366 (isearch-yank-internal
1367 (lambda () (line-end-position (if (eolp) 2 1)))))
1369 (defun isearch-search-and-update ()
1370 ;; Do the search and update the display.
1371 (when (or isearch-success
1372 ;; Unsuccessful regexp search may become successful by
1373 ;; addition of characters which make isearch-string valid
1374 isearch-regexp
1375 ;; If the string was found but was completely invisible,
1376 ;; it might now be partly visible, so try again.
1377 (prog1 isearch-hidden (setq isearch-hidden nil)))
1378 ;; In reverse search, adding stuff at
1379 ;; the end may cause zero or many more chars to be
1380 ;; matched, in the string following point.
1381 ;; Allow all those possibilities without moving point as
1382 ;; long as the match does not extend past search origin.
1383 (if (and (not isearch-forward) (not isearch-adjusted)
1384 (condition-case ()
1385 (let ((case-fold-search isearch-case-fold-search))
1386 (if (and (eq case-fold-search t) search-upper-case)
1387 (setq case-fold-search
1388 (isearch-no-upper-case-p isearch-string isearch-regexp)))
1389 (looking-at (if isearch-regexp isearch-string
1390 (regexp-quote isearch-string))))
1391 (error nil))
1392 (or isearch-yank-flag
1393 (<= (match-end 0)
1394 (min isearch-opoint isearch-barrier))))
1395 (progn
1396 (setq isearch-success t
1397 isearch-error nil
1398 isearch-other-end (match-end 0))
1399 (if (and (eq isearch-case-fold-search t) search-upper-case)
1400 (setq isearch-case-fold-search
1401 (isearch-no-upper-case-p isearch-string isearch-regexp))))
1402 ;; Not regexp, not reverse, or no match at point.
1403 (if (and isearch-other-end (not isearch-adjusted))
1404 (goto-char (if isearch-forward isearch-other-end
1405 (min isearch-opoint
1406 isearch-barrier
1407 (1+ isearch-other-end)))))
1408 (isearch-search)
1410 (isearch-push-state)
1411 (if isearch-op-fun (funcall isearch-op-fun))
1412 (isearch-update))
1415 ;; *, ?, }, and | chars can make a regexp more liberal.
1416 ;; They can make a regexp match sooner or make it succeed instead of failing.
1417 ;; So go back to place last successful search started
1418 ;; or to the last ^S/^R (barrier), whichever is nearer.
1419 ;; + needs no special handling because the string must match at least once.
1421 (defun isearch-backslash (str)
1422 "Return t if STR ends in an odd number of backslashes."
1423 (= (mod (- (length str) (string-match "\\\\*\\'" str)) 2) 1))
1425 (defun isearch-fallback (want-backslash &optional allow-invalid to-barrier)
1426 "Return point to previous successful match to allow regexp liberalization.
1427 \\<isearch-mode-map>
1428 Respects \\[isearch-repeat-forward] and \\[isearch-repeat-backward] by
1429 stopping at `isearch-barrier' as needed.
1431 Do nothing if a backslash is escaping the liberalizing character.
1432 If WANT-BACKSLASH is non-nil, invert this behavior (for \\} and \\|).
1434 Do nothing if regexp has recently been invalid unless optional
1435 ALLOW-INVALID non-nil.
1437 If optional TO-BARRIER non-nil, ignore previous matches and go exactly
1438 to the barrier."
1439 ;; (eq (not a) (not b)) makes all non-nil values equivalent
1440 (when (and isearch-regexp (eq (not (isearch-backslash isearch-string))
1441 (not want-backslash))
1442 ;; We have to check 2 stack frames because the last might be
1443 ;; invalid just because of a backslash.
1444 (or (not isearch-error)
1445 (not (isearch-error-state (cadr isearch-cmds)))
1446 allow-invalid))
1447 (if to-barrier
1448 (progn (goto-char isearch-barrier)
1449 (setq isearch-adjusted t))
1450 (let* ((stack isearch-cmds)
1451 (previous (cdr stack)) ; lookbelow in the stack
1452 (frame (car stack)))
1453 ;; Walk down the stack looking for a valid regexp (as of course only
1454 ;; they can be the previous successful match); this conveniently
1455 ;; removes all bracket-sets and groups that might be in the way, as
1456 ;; well as partial \{\} constructs that the code below leaves behind.
1457 ;; Also skip over postfix operators -- though horrid,
1458 ;; 'ab?\{5,6\}+\{1,2\}*' is perfectly legal.
1459 (while (and previous
1460 (or (isearch-error-state frame)
1461 (let* ((string (isearch-string-state frame))
1462 (lchar (aref string (1- (length string)))))
1463 ;; The operators aren't always operators; check
1464 ;; backslashes. This doesn't handle the case of
1465 ;; operators at the beginning of the regexp not
1466 ;; being special, but then we should fall back to
1467 ;; the barrier anyway because it's all optional.
1468 (if (isearch-backslash
1469 (isearch-string-state (car previous)))
1470 (eq lchar ?\})
1471 (memq lchar '(?* ?? ?+))))))
1472 (setq stack previous previous (cdr previous) frame (car stack)))
1473 (when stack
1474 ;; `stack' now refers the most recent valid regexp that is not at
1475 ;; all optional in its last term. Now dig one level deeper and find
1476 ;; what matched before that.
1477 (let ((last-other-end
1478 (or (and (car previous)
1479 (isearch-other-end-state (car previous)))
1480 isearch-barrier)))
1481 (goto-char (if isearch-forward
1482 (max last-other-end isearch-barrier)
1483 (min last-other-end isearch-barrier)))
1484 (setq isearch-adjusted t)))))))
1486 (defun isearch-unread-key-sequence (keylist)
1487 "Unread the given key-sequence KEYLIST.
1488 Scroll-bar or mode-line events are processed appropriately."
1489 (cancel-kbd-macro-events)
1490 (apply 'isearch-unread keylist)
1491 ;; If the event was a scroll-bar or mode-line click, the event will have
1492 ;; been prefixed by a symbol such as vertical-scroll-bar. We must remove
1493 ;; it here, because this symbol will be attached to the event again next
1494 ;; time it gets read by read-key-sequence.
1496 ;; (Old comment from isearch-other-meta-char: "Note that we don't have to
1497 ;; modify the event anymore in 21 because read_key_sequence no longer
1498 ;; modifies events to produce fake prefix keys.")
1499 (if (and (> (length keylist) 1)
1500 (symbolp (car keylist))
1501 (listp (cadr keylist))
1502 (not (numberp (posn-point
1503 (event-start (cadr keylist) )))))
1504 (pop unread-command-events)))
1506 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
1507 ;; scrolling within Isearch mode. Alan Mackenzie (acm@muc.de), 2003/2/24
1509 ;; The idea here is that certain vertical scrolling commands (like C-l
1510 ;; `recenter') should be usable WITHIN Isearch mode. For a command to be
1511 ;; suitable, it must NOT alter the buffer, swap to another buffer or frame,
1512 ;; tamper with isearch's state, or move point. It is unacceptable for the
1513 ;; search string to be scrolled out of the current window. If a command
1514 ;; attempts this, we scroll the text back again.
1516 ;; We implement this feature with a property called `isearch-scroll'.
1517 ;; If a command's symbol has the value t for this property it is a
1518 ;; scrolling command. The feature needs to be enabled by setting the
1519 ;; customizable variable `isearch-allow-scroll' to a non-nil value.
1521 ;; The universal argument commands (e.g. C-u) in simple.el are marked
1522 ;; as scrolling commands, and isearch.el has been amended to allow
1523 ;; prefix arguments to be passed through to scrolling commands. Thus
1524 ;; M-0 C-l will scroll point to the top of the window.
1526 ;; Horizontal scrolling commands are currently not catered for.
1527 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
1529 ;; Set the isearch-scroll property on some standard functions:
1530 ;; Scroll-bar functions:
1531 (if (fboundp 'scroll-bar-toolkit-scroll)
1532 (put 'scroll-bar-toolkit-scroll 'isearch-scroll t))
1533 (if (fboundp 'mac-handle-scroll-bar-event)
1534 (put 'mac-handle-scroll-bar-event 'isearch-scroll t))
1535 (if (fboundp 'w32-handle-scroll-bar-event)
1536 (put 'w32-handle-scroll-bar-event 'isearch-scroll t))
1538 ;; Commands which scroll the window:
1539 (put 'recenter 'isearch-scroll t)
1540 (put 'reposition-window 'isearch-scroll t)
1541 (put 'scroll-up 'isearch-scroll t)
1542 (put 'scroll-down 'isearch-scroll t)
1544 ;; Commands which act on the other window
1545 (put 'list-buffers 'isearch-scroll t)
1546 (put 'scroll-other-window 'isearch-scroll t)
1547 (put 'scroll-other-window-down 'isearch-scroll t)
1548 (put 'beginning-of-buffer-other-window 'isearch-scroll t)
1549 (put 'end-of-buffer-other-window 'isearch-scroll t)
1551 ;; Commands which change the window layout
1552 (put 'delete-other-windows 'isearch-scroll t)
1553 (put 'balance-windows 'isearch-scroll t)
1554 (put 'split-window-vertically 'isearch-scroll t)
1555 (put 'split-window-horizontally 'isearch-scroll t)
1556 (put 'enlarge-window 'isearch-scroll t)
1558 ;; Universal argument commands
1559 (put 'universal-argument 'isearch-scroll t)
1560 (put 'negative-argument 'isearch-scroll t)
1561 (put 'digit-argument 'isearch-scroll t)
1563 (defcustom isearch-allow-scroll nil
1564 "If non-nil, scrolling commands are allowed during incremental search."
1565 :type 'boolean
1566 :group 'isearch)
1568 (defun isearch-string-out-of-window (isearch-point)
1569 "Test whether the search string is currently outside of the window.
1570 Return nil if it's completely visible, or if point is visible,
1571 together with as much of the search string as will fit; the symbol
1572 `above' if we need to scroll the text downwards; the symbol `below',
1573 if upwards."
1574 (let ((w-start (window-start))
1575 (w-end (window-end nil t))
1576 (w-L1 (save-excursion (move-to-window-line 1) (point)))
1577 (w-L-1 (save-excursion (move-to-window-line -1) (point)))
1578 start end) ; start and end of search string in buffer
1579 (if isearch-forward
1580 (setq end isearch-point start (or isearch-other-end isearch-point))
1581 (setq start isearch-point end (or isearch-other-end isearch-point)))
1582 (cond ((or (and (>= start w-start) (<= end w-end))
1583 (if isearch-forward
1584 (and (>= isearch-point w-L-1) (< isearch-point w-end)) ; point on Line -1
1585 (and (>= isearch-point w-start) (< isearch-point w-L1)))) ; point on Line 0
1586 nil)
1587 ((and (< start w-start)
1588 (< isearch-point w-L-1))
1589 'above)
1590 (t 'below))))
1592 (defun isearch-back-into-window (above isearch-point)
1593 "Scroll the window to bring the search string back into view.
1594 Restore point to ISEARCH-POINT in the process. ABOVE is t when the
1595 search string is above the top of the window, nil when it is beneath
1596 the bottom."
1597 (let (start end)
1598 (if isearch-forward
1599 (setq end isearch-point start (or isearch-other-end isearch-point))
1600 (setq start isearch-point end (or isearch-other-end isearch-point)))
1601 (if above
1602 (progn
1603 (goto-char start)
1604 (recenter 0)
1605 (when (>= isearch-point (window-end nil t))
1606 (goto-char isearch-point)
1607 (recenter -1)))
1608 (goto-char end)
1609 (recenter -1)
1610 (when (< isearch-point (window-start))
1611 (goto-char isearch-point)
1612 (recenter 0))))
1613 (goto-char isearch-point))
1615 (defun isearch-reread-key-sequence-naturally (keylist)
1616 "Reread key sequence KEYLIST with Isearch mode's keymap deactivated.
1617 Return the key sequence as a string/vector."
1618 (isearch-unread-key-sequence keylist)
1619 (let (overriding-terminal-local-map)
1620 (read-key-sequence nil))) ; This will go through function-key-map, if nec.
1622 (defun isearch-lookup-scroll-key (key-seq)
1623 "If KEY-SEQ is bound to a scrolling command, return it as a symbol.
1624 Otherwise return nil."
1625 (let* ((overriding-terminal-local-map nil)
1626 (binding (key-binding key-seq)))
1627 (and binding (symbolp binding) (commandp binding)
1628 (eq (get binding 'isearch-scroll) t)
1629 binding)))
1631 (defalias 'isearch-other-control-char 'isearch-other-meta-char)
1633 (defun isearch-other-meta-char (&optional arg)
1634 "Process a miscellaneous key sequence in Isearch mode.
1636 Try to convert the current key-sequence to something usable in Isearch
1637 mode, either by converting it with `function-key-map', downcasing a
1638 key with C-<upper case>, or finding a \"scrolling command\" bound to
1639 it. \(In the last case, we may have to read more events.) If so,
1640 either unread the converted sequence or execute the command.
1642 Otherwise, if `search-exit-option' is non-nil (the default) unread the
1643 key-sequence and exit the search normally. If it is the symbol
1644 `edit', the search string is edited in the minibuffer and the meta
1645 character is unread so that it applies to editing the string.
1647 ARG is the prefix argument. It will be transmitted through to the
1648 scrolling command or to the command whose key-sequence exits
1649 Isearch mode."
1650 (interactive "P")
1651 (let* ((key (if current-prefix-arg ; not nec the same as ARG
1652 (substring (this-command-keys) universal-argument-num-events)
1653 (this-command-keys)))
1654 (main-event (aref key 0))
1655 (keylist (listify-key-sequence key))
1656 scroll-command isearch-point)
1657 (cond ((and (= (length key) 1)
1658 (let ((lookup (lookup-key function-key-map key)))
1659 (not (or (null lookup) (integerp lookup)
1660 (keymapp lookup)))))
1661 ;; Handle a function key that translates into something else.
1662 ;; If the key has a global definition too,
1663 ;; exit and unread the key itself, so its global definition runs.
1664 ;; Otherwise, unread the translation,
1665 ;; so that the translated key takes effect within isearch.
1666 (cancel-kbd-macro-events)
1667 (if (lookup-key global-map key)
1668 (progn
1669 (isearch-done)
1670 (apply 'isearch-unread keylist))
1671 (setq keylist
1672 (listify-key-sequence (lookup-key function-key-map key)))
1673 (while keylist
1674 (setq key (car keylist))
1675 ;; If KEY is a printing char, we handle it here
1676 ;; directly to avoid the input method and keyboard
1677 ;; coding system translating it.
1678 (if (and (integerp key)
1679 (>= key ?\s) (/= key 127) (< key 256))
1680 (progn
1681 (isearch-process-search-char key)
1682 (setq keylist (cdr keylist)))
1683 ;; As the remaining keys in KEYLIST can't be handled
1684 ;; here, we must reread them.
1685 (apply 'isearch-unread keylist)
1686 (setq keylist nil)))))
1688 ;; Handle an undefined shifted control character
1689 ;; by downshifting it if that makes it defined.
1690 ;; (As read-key-sequence would normally do,
1691 ;; if we didn't have a default definition.)
1692 (let ((mods (event-modifiers main-event)))
1693 (and (integerp main-event)
1694 (memq 'shift mods)
1695 (memq 'control mods)
1696 (lookup-key isearch-mode-map
1697 (let ((copy (copy-sequence key)))
1698 (aset copy 0
1699 (- main-event (- ?\C-\S-a ?\C-a)))
1700 copy)
1701 nil)))
1702 (setcar keylist (- main-event (- ?\C-\S-a ?\C-a)))
1703 (cancel-kbd-macro-events)
1704 (apply 'isearch-unread keylist))
1705 ((eq search-exit-option 'edit)
1706 (apply 'isearch-unread keylist)
1707 (isearch-edit-string))
1708 ;; Handle a scrolling function.
1709 ((and isearch-allow-scroll
1710 (progn (setq key (isearch-reread-key-sequence-naturally keylist))
1711 (setq keylist (listify-key-sequence key))
1712 (setq main-event (aref key 0))
1713 (setq scroll-command (isearch-lookup-scroll-key key))))
1714 ;; From this point onwards, KEY, KEYLIST and MAIN-EVENT hold a
1715 ;; complete key sequence, possibly as modified by function-key-map,
1716 ;; not merely the one or two event fragment which invoked
1717 ;; isearch-other-meta-char in the first place.
1718 (setq isearch-point (point))
1719 (setq prefix-arg arg)
1720 (command-execute scroll-command)
1721 (let ((ab-bel (isearch-string-out-of-window isearch-point)))
1722 (if ab-bel
1723 (isearch-back-into-window (eq ab-bel 'above) isearch-point)
1724 (goto-char isearch-point)))
1725 (isearch-update))
1726 (search-exit-option
1727 (let (window)
1728 (isearch-unread-key-sequence keylist)
1729 (setq main-event (car unread-command-events))
1731 ;; If we got a mouse click event, that event contains the
1732 ;; window clicked on. maybe it was read with the buffer
1733 ;; it was clicked on. If so, that buffer, not the current one,
1734 ;; is in isearch mode. So end the search in that buffer.
1736 ;; ??? I have no idea what this if checks for, but it's
1737 ;; obviously wrong for the case that a down-mouse event
1738 ;; on another window invokes this function. The event
1739 ;; will contain the window clicked on and that window's
1740 ;; buffer is certainly not always in Isearch mode.
1742 ;; Leave the code in, but check for current buffer not
1743 ;; being in Isearch mode for now, until someone tells
1744 ;; what it's really supposed to do.
1746 ;; --gerd 2001-08-10.
1748 (if (and (not isearch-mode)
1749 (listp main-event)
1750 (setq window (posn-window (event-start main-event)))
1751 (windowp window)
1752 (or (> (minibuffer-depth) 0)
1753 (not (window-minibuffer-p window))))
1754 (save-excursion
1755 (set-buffer (window-buffer window))
1756 (isearch-done)
1757 (isearch-clean-overlays))
1758 (isearch-done)
1759 (isearch-clean-overlays)
1760 (setq prefix-arg arg))))
1761 (t;; otherwise nil
1762 (isearch-process-search-string key key)))))
1764 (defun isearch-quote-char ()
1765 "Quote special characters for incremental search."
1766 (interactive)
1767 (let ((char (read-quoted-char (isearch-message t))))
1768 ;; Assume character codes 0200 - 0377 stand for characters in some
1769 ;; single-byte character set, and convert them to Emacs
1770 ;; characters.
1771 (if (and isearch-regexp (= char ?\s))
1772 (if (subregexp-context-p isearch-string (length isearch-string))
1773 (isearch-process-search-string "[ ]" " ")
1774 (isearch-process-search-char char))
1775 (and enable-multibyte-characters
1776 (>= char ?\200)
1777 (<= char ?\377)
1778 (setq char (unibyte-char-to-multibyte char)))
1779 (isearch-process-search-char char))))
1781 (defun isearch-return-char ()
1782 "Convert return into newline for incremental search."
1783 (interactive)
1784 (isearch-process-search-char ?\n))
1785 (make-obsolete 'isearch-return-char 'isearch-printing-char)
1787 (defun isearch-printing-char ()
1788 "Add this ordinary printing character to the search string and search."
1789 (interactive)
1790 (let ((char last-command-char))
1791 (if (= char ?\S-\ )
1792 (setq char ?\s))
1793 (if (and enable-multibyte-characters
1794 (>= char ?\200)
1795 (<= char ?\377))
1796 (if (keyboard-coding-system)
1797 (isearch-process-search-multibyte-characters char)
1798 (isearch-process-search-char (unibyte-char-to-multibyte char)))
1799 (if current-input-method
1800 (isearch-process-search-multibyte-characters char)
1801 (isearch-process-search-char char)))))
1803 (defun isearch-process-search-char (char)
1804 ;; * and ? are special in regexps when not preceded by \.
1805 ;; } and | are special in regexps when preceded by \.
1806 ;; Nothing special for + because it matches at least once.
1807 (cond
1808 ((memq char '(?* ??)) (isearch-fallback nil))
1809 ((eq char ?\}) (isearch-fallback t t))
1810 ((eq char ?|) (isearch-fallback t nil t)))
1812 ;; Append the char to the search string, update the message and re-search.
1813 (if (char-table-p translation-table-for-input)
1814 (setq char (or (aref translation-table-for-input char) char)))
1815 (isearch-process-search-string
1816 (char-to-string char)
1817 (if (>= char ?\200)
1818 (char-to-string char)
1819 (isearch-text-char-description char))))
1821 (defun isearch-process-search-string (string message)
1822 (setq isearch-string (concat isearch-string string)
1823 isearch-message (concat isearch-message message))
1824 (isearch-search-and-update))
1827 ;; Search Ring
1829 (defun isearch-ring-adjust1 (advance)
1830 ;; Helper for isearch-ring-adjust
1831 (let* ((ring (if isearch-regexp regexp-search-ring search-ring))
1832 (length (length ring))
1833 (yank-pointer-name (if isearch-regexp
1834 'regexp-search-ring-yank-pointer
1835 'search-ring-yank-pointer))
1836 (yank-pointer (eval yank-pointer-name)))
1837 (if (zerop length)
1839 (set yank-pointer-name
1840 (setq yank-pointer
1841 (mod (+ (or yank-pointer 0)
1842 (if advance -1 1))
1843 length)))
1844 (setq isearch-string (nth yank-pointer ring)
1845 isearch-message (mapconcat 'isearch-text-char-description
1846 isearch-string "")))))
1848 (defun isearch-ring-adjust (advance)
1849 ;; Helper for isearch-ring-advance and isearch-ring-retreat
1850 (isearch-ring-adjust1 advance)
1851 (if search-ring-update
1852 (progn
1853 (isearch-search)
1854 (isearch-update))
1855 (isearch-edit-string)
1857 (isearch-push-state))
1859 (defun isearch-ring-advance ()
1860 "Advance to the next search string in the ring."
1861 ;; This could be more general to handle a prefix arg, but who would use it.
1862 (interactive)
1863 (isearch-ring-adjust 'advance))
1865 (defun isearch-ring-retreat ()
1866 "Retreat to the previous search string in the ring."
1867 (interactive)
1868 (isearch-ring-adjust nil))
1870 (defun isearch-complete1 ()
1871 ;; Helper for isearch-complete and isearch-complete-edit
1872 ;; Return t if completion OK, nil if no completion exists.
1873 (let* ((ring (if isearch-regexp regexp-search-ring search-ring))
1874 (completion-ignore-case case-fold-search)
1875 (completion (try-completion isearch-string ring)))
1876 (cond
1877 ((eq completion t)
1878 ;; isearch-string stays the same
1880 ((or completion ; not nil, must be a string
1881 (= 0 (length isearch-string))) ; shouldn't have to say this
1882 (if (equal completion isearch-string) ;; no extension?
1883 (progn
1884 (if completion-auto-help
1885 (with-output-to-temp-buffer "*Isearch completions*"
1886 (display-completion-list
1887 (all-completions isearch-string ring))))
1889 (and completion
1890 (setq isearch-string completion))))
1892 (message "No completion") ; waits a second if in minibuffer
1893 nil))))
1895 (defun isearch-complete ()
1896 "Complete the search string from the strings on the search ring.
1897 The completed string is then editable in the minibuffer.
1898 If there is no completion possible, say so and continue searching."
1899 (interactive)
1900 (if (isearch-complete1)
1901 (progn (setq isearch-message
1902 (mapconcat 'isearch-text-char-description
1903 isearch-string ""))
1904 (isearch-edit-string))
1905 ;; else
1906 (sit-for 1)
1907 (isearch-update)))
1909 (defun isearch-complete-edit ()
1910 "Same as `isearch-complete' except in the minibuffer."
1911 (interactive)
1912 (setq isearch-string (field-string))
1913 (if (isearch-complete1)
1914 (progn
1915 (delete-field)
1916 (insert isearch-string))))
1919 ;; Message string
1921 (defun isearch-message (&optional c-q-hack ellipsis)
1922 ;; Generate and print the message string.
1923 (let ((cursor-in-echo-area ellipsis)
1924 (m (concat
1925 (isearch-message-prefix c-q-hack ellipsis isearch-nonincremental)
1926 (if (and (not isearch-success)
1927 (string-match " +$" isearch-message))
1928 (concat
1929 (substring isearch-message 0 (match-beginning 0))
1930 (propertize (substring isearch-message (match-beginning 0))
1931 'face 'trailing-whitespace))
1932 isearch-message)
1933 (isearch-message-suffix c-q-hack ellipsis)
1935 (if c-q-hack
1937 (let ((message-log-max nil))
1938 (message "%s" m)))))
1940 (defun isearch-message-prefix (&optional c-q-hack ellipsis nonincremental)
1941 ;; If about to search, and previous search regexp was invalid,
1942 ;; check that it still is. If it is valid now,
1943 ;; let the message we display while searching say that it is valid.
1944 (and isearch-error ellipsis
1945 (condition-case ()
1946 (progn (re-search-forward isearch-string (point) t)
1947 (setq isearch-error nil))
1948 (error nil)))
1949 ;; If currently failing, display no ellipsis.
1950 (or isearch-success (setq ellipsis nil))
1951 (let ((m (concat (if isearch-success "" "failing ")
1952 (if isearch-adjusted "pending " "")
1953 (if (and isearch-wrapped
1954 (not isearch-wrap-function)
1955 (if isearch-forward
1956 (> (point) isearch-opoint)
1957 (< (point) isearch-opoint)))
1958 "over")
1959 (if isearch-wrapped "wrapped ")
1960 (if isearch-word "word " "")
1961 (if isearch-regexp "regexp " "")
1962 (if nonincremental "search" "I-search")
1963 (if isearch-forward "" " backward")
1964 (if current-input-method
1965 (concat " [" current-input-method-title "]: ")
1966 ": ")
1968 (propertize (concat (upcase (substring m 0 1)) (substring m 1))
1969 'face 'minibuffer-prompt)))
1971 (defun isearch-message-suffix (&optional c-q-hack ellipsis)
1972 (concat (if c-q-hack "^Q" "")
1973 (if isearch-error
1974 (concat " [" isearch-error "]")
1975 "")))
1978 ;; Searching
1980 (defvar isearch-search-fun-function nil
1981 "Override `isearch-search-fun'.
1982 This function should return the search function for isearch to use.
1983 It will call this function with three arguments
1984 as if it were `search-forward'.")
1986 (defun isearch-search-fun ()
1987 "Return the function to use for the search.
1988 Can be changed via `isearch-search-fun-function' for special needs."
1989 (if isearch-search-fun-function
1990 (funcall isearch-search-fun-function)
1991 (cond
1992 (isearch-word
1993 (if isearch-forward 'word-search-forward 'word-search-backward))
1994 (isearch-regexp
1995 (if isearch-forward 're-search-forward 're-search-backward))
1997 (if isearch-forward 'search-forward 'search-backward)))))
1999 (defun isearch-search ()
2000 ;; Do the search with the current search string.
2001 (isearch-message nil t)
2002 (if (and (eq isearch-case-fold-search t) search-upper-case)
2003 (setq isearch-case-fold-search
2004 (isearch-no-upper-case-p isearch-string isearch-regexp)))
2005 (condition-case lossage
2006 (let ((inhibit-point-motion-hooks search-invisible)
2007 (inhibit-quit nil)
2008 (case-fold-search isearch-case-fold-search)
2009 (search-spaces-regexp search-whitespace-regexp)
2010 (retry t))
2011 (setq isearch-error nil)
2012 (while retry
2013 (setq isearch-success
2014 (funcall
2015 (isearch-search-fun)
2016 isearch-string nil t))
2017 ;; Clear RETRY unless we matched some invisible text
2018 ;; and we aren't supposed to do that.
2019 (if (or (eq search-invisible t)
2020 (not isearch-success)
2021 (bobp) (eobp)
2022 (= (match-beginning 0) (match-end 0))
2023 (not (isearch-range-invisible
2024 (match-beginning 0) (match-end 0))))
2025 (setq retry nil)))
2026 (setq isearch-just-started nil)
2027 (if isearch-success
2028 (setq isearch-other-end
2029 (if isearch-forward (match-beginning 0) (match-end 0)))))
2031 (quit (isearch-unread ?\C-g)
2032 (setq isearch-success nil))
2034 (invalid-regexp
2035 (setq isearch-error (car (cdr lossage)))
2036 (if (string-match
2037 "\\`Premature \\|\\`Unmatched \\|\\`Invalid "
2038 isearch-error)
2039 (setq isearch-error "incomplete input")))
2041 (search-failed
2042 (setq isearch-success nil)
2043 (setq isearch-error (nth 2 lossage)))
2045 (error
2046 ;; stack overflow in regexp search.
2047 (setq isearch-error (format "%s" lossage))))
2049 (if isearch-success
2051 ;; Ding if failed this time after succeeding last time.
2052 (and (isearch-success-state (car isearch-cmds))
2053 (ding))
2054 (if (functionp (isearch-pop-fun-state (car isearch-cmds)))
2055 (funcall (isearch-pop-fun-state (car isearch-cmds)) (car isearch-cmds)))
2056 (goto-char (isearch-point-state (car isearch-cmds)))))
2059 ;; Called when opening an overlay, and we are still in isearch.
2060 (defun isearch-open-overlay-temporary (ov)
2061 (if (not (null (overlay-get ov 'isearch-open-invisible-temporary)))
2062 ;; Some modes would want to open the overlays temporary during
2063 ;; isearch in their own way, they should set the
2064 ;; `isearch-open-invisible-temporary' to a function doing this.
2065 (funcall (overlay-get ov 'isearch-open-invisible-temporary) ov nil)
2066 ;; Store the values for the `invisible' and `intangible'
2067 ;; properties, and then set them to nil. This way the text hidden
2068 ;; by this overlay becomes visible.
2070 ;; Do we really need to set the `intangible' property to t? Can we
2071 ;; have the point inside an overlay with an `intangible' property?
2072 ;; In 19.34 this does not exist so I cannot test it.
2073 (overlay-put ov 'isearch-invisible (overlay-get ov 'invisible))
2074 (overlay-put ov 'isearch-intangible (overlay-get ov 'intangible))
2075 (overlay-put ov 'invisible nil)
2076 (overlay-put ov 'intangible nil)))
2079 ;; This is called at the end of isearch. It will open the overlays
2080 ;; that contain the latest match. Obviously in case of a C-g the
2081 ;; point returns to the original location which surely is not contain
2082 ;; in any of these overlays, se we are safe in this case too.
2083 (defun isearch-open-necessary-overlays (ov)
2084 (let ((inside-overlay (and (> (point) (overlay-start ov))
2085 (< (point) (overlay-end ov))))
2086 ;; If this exists it means that the overlay was opened using
2087 ;; this function, not by us tweaking the overlay properties.
2088 (fct-temp (overlay-get ov 'isearch-open-invisible-temporary)))
2089 (when (or inside-overlay (not fct-temp))
2090 ;; restore the values for the `invisible' and `intangible'
2091 ;; properties
2092 (overlay-put ov 'invisible (overlay-get ov 'isearch-invisible))
2093 (overlay-put ov 'intangible (overlay-get ov 'isearch-intangible))
2094 (overlay-put ov 'isearch-invisible nil)
2095 (overlay-put ov 'isearch-intangible nil))
2096 (if inside-overlay
2097 (funcall (overlay-get ov 'isearch-open-invisible) ov)
2098 (if fct-temp
2099 (funcall fct-temp ov t)))))
2101 ;; This is called when exiting isearch. It closes the temporary
2102 ;; opened overlays, except the ones that contain the latest match.
2103 (defun isearch-clean-overlays ()
2104 (when isearch-opened-overlays
2105 (mapc 'isearch-open-necessary-overlays isearch-opened-overlays)
2106 (setq isearch-opened-overlays nil)))
2109 (defun isearch-intersects-p (start0 end0 start1 end1)
2110 "Return t if regions START0..END0 and START1..END1 intersect."
2111 (or (and (>= start0 start1) (< start0 end1))
2112 (and (> end0 start1) (<= end0 end1))
2113 (and (>= start1 start0) (< start1 end0))
2114 (and (> end1 start0) (<= end1 end0))))
2117 ;; Verify if the current match is outside of each element of
2118 ;; `isearch-opened-overlays', if so close that overlay.
2120 (defun isearch-close-unnecessary-overlays (begin end)
2121 (let ((overlays isearch-opened-overlays))
2122 (setq isearch-opened-overlays nil)
2123 (dolist (ov overlays)
2124 (if (isearch-intersects-p begin end (overlay-start ov) (overlay-end ov))
2125 (push ov isearch-opened-overlays)
2126 (let ((fct-temp (overlay-get ov 'isearch-open-invisible-temporary)))
2127 (if fct-temp
2128 ;; If this exists it means that the overlay was opened
2129 ;; using this function, not by us tweaking the overlay
2130 ;; properties.
2131 (funcall fct-temp ov t)
2132 (overlay-put ov 'invisible (overlay-get ov 'isearch-invisible))
2133 (overlay-put ov 'intangible (overlay-get ov 'isearch-intangible))
2134 (overlay-put ov 'isearch-invisible nil)
2135 (overlay-put ov 'isearch-intangible nil)))))))
2138 (defun isearch-range-invisible (beg end)
2139 "Return t if all the text from BEG to END is invisible."
2140 (when (/= beg end)
2141 ;; Check that invisibility runs up to END.
2142 (save-excursion
2143 (goto-char beg)
2144 (let (;; can-be-opened keeps track if we can open some overlays.
2145 (can-be-opened (eq search-invisible 'open))
2146 ;; the list of overlays that could be opened
2147 (crt-overlays nil))
2148 (when (and can-be-opened isearch-hide-immediately)
2149 (isearch-close-unnecessary-overlays beg end))
2150 ;; If the following character is currently invisible,
2151 ;; skip all characters with that same `invisible' property value.
2152 ;; Do that over and over.
2153 (while (and (< (point) end)
2154 (let ((prop
2155 (get-char-property (point) 'invisible)))
2156 (if (eq buffer-invisibility-spec t)
2157 prop
2158 (or (memq prop buffer-invisibility-spec)
2159 (assq prop buffer-invisibility-spec)))))
2160 (if (get-text-property (point) 'invisible)
2161 (progn
2162 (goto-char (next-single-property-change (point) 'invisible
2163 nil end))
2164 ;; if text is hidden by an `invisible' text property
2165 ;; we cannot open it at all.
2166 (setq can-be-opened nil))
2167 (when can-be-opened
2168 (let ((overlays (overlays-at (point)))
2169 ov-list
2171 invis-prop)
2172 (while overlays
2173 (setq o (car overlays)
2174 invis-prop (overlay-get o 'invisible))
2175 (if (if (eq buffer-invisibility-spec t)
2176 invis-prop
2177 (or (memq invis-prop buffer-invisibility-spec)
2178 (assq invis-prop buffer-invisibility-spec)))
2179 (if (overlay-get o 'isearch-open-invisible)
2180 (setq ov-list (cons o ov-list))
2181 ;; We found one overlay that cannot be
2182 ;; opened, that means the whole chunk
2183 ;; cannot be opened.
2184 (setq can-be-opened nil)))
2185 (setq overlays (cdr overlays)))
2186 (if can-be-opened
2187 ;; It makes sense to append to the open
2188 ;; overlays list only if we know that this is
2189 ;; t.
2190 (setq crt-overlays (append ov-list crt-overlays)))))
2191 (goto-char (next-overlay-change (point)))))
2192 ;; See if invisibility reaches up thru END.
2193 (if (>= (point) end)
2194 (if (and can-be-opened (consp crt-overlays))
2195 (progn
2196 (setq isearch-opened-overlays
2197 (append isearch-opened-overlays crt-overlays))
2198 (mapc 'isearch-open-overlay-temporary crt-overlays)
2199 nil)
2200 (setq isearch-hidden t)))))))
2203 ;; General utilities
2205 (defun isearch-no-upper-case-p (string regexp-flag)
2206 "Return t if there are no upper case chars in STRING.
2207 If REGEXP-FLAG is non-nil, disregard letters preceded by `\\' (but not `\\\\')
2208 since they have special meaning in a regexp."
2209 (let (quote-flag (i 0) (len (length string)) found)
2210 (while (and (not found) (< i len))
2211 (let ((char (aref string i)))
2212 (if (and regexp-flag (eq char ?\\))
2213 (setq quote-flag (not quote-flag))
2214 (if (and (not quote-flag) (not (eq char (downcase char))))
2215 (setq found t))
2216 (setq quote-flag nil)))
2217 (setq i (1+ i)))
2218 (not found)))
2220 ;; Portability functions to support various Emacs versions.
2222 (defun isearch-text-char-description (c)
2223 (cond
2224 ((< c ?\s) (format "^%c" (+ c 64)))
2225 ((= c ?\^?) "^?")
2226 (t (char-to-string c))))
2228 ;; General function to unread characters or events.
2229 ;; Also insert them in a keyboard macro being defined.
2230 (defun isearch-unread (&rest char-or-events)
2231 (mapc 'store-kbd-macro-event char-or-events)
2232 (setq unread-command-events
2233 (append char-or-events unread-command-events)))
2236 ;; Highlighting
2238 (defvar isearch-overlay nil)
2240 (defun isearch-highlight (beg end)
2241 (if search-highlight
2242 (if isearch-overlay
2243 ;; Overlay already exists, just move it.
2244 (move-overlay isearch-overlay beg end (current-buffer))
2245 ;; Overlay doesn't exist, create it.
2246 (setq isearch-overlay (make-overlay beg end))
2247 ;; 1001 is higher than lazy's 1000 and ediff's 100+
2248 (overlay-put isearch-overlay 'priority 1001)
2249 (overlay-put isearch-overlay 'face isearch))))
2251 (defun isearch-dehighlight ()
2252 (when isearch-overlay
2253 (delete-overlay isearch-overlay)))
2255 ;; isearch-lazy-highlight feature
2256 ;; by Bob Glickstein <http://www.zanshin.com/~bobg/>
2258 ;; When active, *every* match for the current search string is
2259 ;; highlighted: the current one using the normal isearch match color
2260 ;; and all the others using `isearch-lazy-highlight'. The extra
2261 ;; highlighting makes it easier to anticipate where the cursor will
2262 ;; land each time you press C-s or C-r to repeat a pending search.
2263 ;; Highlighting of these additional matches happens in a deferred
2264 ;; fashion using "idle timers," so the cycles needed do not rob
2265 ;; isearch of its usual snappy response.
2267 ;; IMPLEMENTATION NOTE: This depends on some isearch internals.
2268 ;; Specifically:
2269 ;; - `isearch-update' is expected to be called (at least) every time
2270 ;; the search string or window-start changes;
2271 ;; - `isearch-string' is expected to contain the current search
2272 ;; string as entered by the user;
2273 ;; - the type of the current search is expected to be given by
2274 ;; `isearch-word' and `isearch-regexp';
2275 ;; - the direction of the current search is expected to be given by
2276 ;; `isearch-forward';
2277 ;; - the variable `isearch-error' is expected to be true
2278 ;; iff `isearch-string' is an invalid regexp.
2280 (defvar isearch-lazy-highlight-overlays nil)
2281 (defvar isearch-lazy-highlight-wrapped nil)
2282 (defvar isearch-lazy-highlight-start-limit nil)
2283 (defvar isearch-lazy-highlight-end-limit nil)
2284 (defvar isearch-lazy-highlight-start nil)
2285 (defvar isearch-lazy-highlight-end nil)
2286 (defvar isearch-lazy-highlight-timer nil)
2287 (defvar isearch-lazy-highlight-last-string nil)
2288 (defvar isearch-lazy-highlight-window nil)
2289 (defvar isearch-lazy-highlight-window-start nil)
2290 (defvar isearch-lazy-highlight-window-end nil)
2291 (defvar isearch-lazy-highlight-case-fold-search nil)
2292 (defvar isearch-lazy-highlight-regexp nil)
2294 (defun lazy-highlight-cleanup (&optional force)
2295 "Stop lazy highlighting and remove extra highlighting from current buffer.
2296 FORCE non-nil means do it whether or not `lazy-highlight-cleanup'
2297 is nil. This function is called when exiting an incremental search if
2298 `lazy-highlight-cleanup' is non-nil."
2299 (interactive '(t))
2300 (if (or force lazy-highlight-cleanup)
2301 (while isearch-lazy-highlight-overlays
2302 (delete-overlay (car isearch-lazy-highlight-overlays))
2303 (setq isearch-lazy-highlight-overlays
2304 (cdr isearch-lazy-highlight-overlays))))
2305 (when isearch-lazy-highlight-timer
2306 (cancel-timer isearch-lazy-highlight-timer)
2307 (setq isearch-lazy-highlight-timer nil)))
2309 (define-obsolete-function-alias 'isearch-lazy-highlight-cleanup
2310 'lazy-highlight-cleanup
2311 "22.1")
2313 (defun isearch-lazy-highlight-new-loop (&optional beg end)
2314 "Cleanup any previous `lazy-highlight' loop and begin a new one.
2315 BEG and END specify the bounds within which highlighting should occur.
2316 This is called when `isearch-update' is invoked (which can cause the
2317 search string to change or the window to scroll). It is also used
2318 by other Emacs features."
2319 (when (and (null executing-kbd-macro)
2320 (sit-for 0) ;make sure (window-start) is credible
2321 (or (not (equal isearch-string
2322 isearch-lazy-highlight-last-string))
2323 (not (eq (selected-window)
2324 isearch-lazy-highlight-window))
2325 (not (eq isearch-lazy-highlight-case-fold-search
2326 isearch-case-fold-search))
2327 (not (eq isearch-lazy-highlight-regexp
2328 isearch-regexp))
2329 (not (= (window-start)
2330 isearch-lazy-highlight-window-start))
2331 (not (= (window-end) ; Window may have been split/joined.
2332 isearch-lazy-highlight-window-end))))
2333 ;; something important did indeed change
2334 (lazy-highlight-cleanup t) ;kill old loop & remove overlays
2335 (when (not isearch-error)
2336 (setq isearch-lazy-highlight-start-limit beg
2337 isearch-lazy-highlight-end-limit end)
2338 (setq isearch-lazy-highlight-window (selected-window)
2339 isearch-lazy-highlight-window-start (window-start)
2340 isearch-lazy-highlight-window-end (window-end)
2341 isearch-lazy-highlight-start (point)
2342 isearch-lazy-highlight-end (point)
2343 isearch-lazy-highlight-last-string isearch-string
2344 isearch-lazy-highlight-case-fold-search isearch-case-fold-search
2345 isearch-lazy-highlight-regexp isearch-regexp
2346 isearch-lazy-highlight-wrapped nil)
2347 (unless (equal isearch-string "")
2348 (setq isearch-lazy-highlight-timer
2349 (run-with-idle-timer lazy-highlight-initial-delay nil
2350 'isearch-lazy-highlight-update))))))
2352 (defun isearch-lazy-highlight-search ()
2353 "Search ahead for the next or previous match, for lazy highlighting.
2354 Attempt to do the search exactly the way the pending isearch would."
2355 (let ((case-fold-search isearch-lazy-highlight-case-fold-search)
2356 (isearch-regexp isearch-lazy-highlight-regexp)
2357 (search-spaces-regexp search-whitespace-regexp))
2358 (condition-case nil
2359 (funcall (isearch-search-fun)
2360 isearch-lazy-highlight-last-string
2361 (if isearch-forward
2362 (min (or isearch-lazy-highlight-end-limit (point-max))
2363 (if isearch-lazy-highlight-wrapped
2364 isearch-lazy-highlight-start
2365 (window-end)))
2366 (max (or isearch-lazy-highlight-start-limit (point-min))
2367 (if isearch-lazy-highlight-wrapped
2368 isearch-lazy-highlight-end
2369 (window-start))))
2371 (error nil))))
2373 (defun isearch-lazy-highlight-update ()
2374 "Update highlighting of other matches for current search."
2375 (let ((max lazy-highlight-max-at-a-time)
2376 (looping t)
2377 nomore)
2378 (with-local-quit
2379 (save-selected-window
2380 (if (and (window-live-p isearch-lazy-highlight-window)
2381 (not (eq (selected-window) isearch-lazy-highlight-window)))
2382 (select-window isearch-lazy-highlight-window))
2383 (save-excursion
2384 (save-match-data
2385 (goto-char (if isearch-forward
2386 isearch-lazy-highlight-end
2387 isearch-lazy-highlight-start))
2388 (while looping
2389 (let ((found (isearch-lazy-highlight-search)))
2390 (when max
2391 (setq max (1- max))
2392 (if (<= max 0)
2393 (setq looping nil)))
2394 (if found
2395 (let ((mb (match-beginning 0))
2396 (me (match-end 0)))
2397 (if (= mb me) ;zero-length match
2398 (if isearch-forward
2399 (if (= mb (if isearch-lazy-highlight-wrapped
2400 isearch-lazy-highlight-start
2401 (window-end)))
2402 (setq found nil)
2403 (forward-char 1))
2404 (if (= mb (if isearch-lazy-highlight-wrapped
2405 isearch-lazy-highlight-end
2406 (window-start)))
2407 (setq found nil)
2408 (forward-char -1)))
2410 ;; non-zero-length match
2411 (let ((ov (make-overlay mb me)))
2412 (push ov isearch-lazy-highlight-overlays)
2413 ;; 1000 is higher than ediff's 100+,
2414 ;; but lower than isearch main overlay's 1001
2415 (overlay-put ov 'priority 1000)
2416 (overlay-put ov 'face lazy-highlight-face)
2417 (overlay-put ov 'window (selected-window))))
2418 (if isearch-forward
2419 (setq isearch-lazy-highlight-end (point))
2420 (setq isearch-lazy-highlight-start (point)))))
2422 ;; not found or zero-length match at the search bound
2423 (if (not found)
2424 (if isearch-lazy-highlight-wrapped
2425 (setq looping nil
2426 nomore t)
2427 (setq isearch-lazy-highlight-wrapped t)
2428 (if isearch-forward
2429 (progn
2430 (setq isearch-lazy-highlight-end (window-start))
2431 (goto-char (max (or isearch-lazy-highlight-start-limit (point-min))
2432 (window-start))))
2433 (setq isearch-lazy-highlight-start (window-end))
2434 (goto-char (min (or isearch-lazy-highlight-end-limit (point-max))
2435 (window-end))))))))
2436 (unless nomore
2437 (setq isearch-lazy-highlight-timer
2438 (run-at-time lazy-highlight-interval nil
2439 'isearch-lazy-highlight-update)))))))))
2441 (defun isearch-resume (search regexp word forward message case-fold)
2442 "Resume an incremental search.
2443 SEARCH is the string or regexp searched for.
2444 REGEXP non-nil means the resumed search was a regexp search.
2445 WORD non-nil means resume a word search.
2446 FORWARD non-nil means resume a forward search.
2447 MESSAGE is the echo-area message recorded for the search resumed.
2448 CASE-FOLD non-nil means the search was case-insensitive."
2449 (isearch-mode forward regexp nil nil word)
2450 (setq isearch-string search
2451 isearch-message message
2452 isearch-case-fold-search case-fold)
2453 (isearch-search))
2455 ;; arch-tag: 74850515-f7d8-43a6-8a2c-ca90a4c1e675
2456 ;;; isearch.el ends here