(isearch-repeat): With empty search ring set `isearch-error' to the
[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 ;; For searching multilingual text.
390 (define-key map "\C-\\" 'isearch-toggle-input-method)
391 (define-key map "\C-^" 'isearch-toggle-specified-input-method)
393 ;; People expect to be able to paste with the mouse.
394 (define-key map [mouse-2] #'isearch-mouse-2)
395 (define-key map [down-mouse-2] nil)
397 ;; Some bindings you may want to put in your isearch-mode-hook.
398 ;; Suggest some alternates...
399 (define-key map "\M-c" 'isearch-toggle-case-fold)
400 (define-key map "\M-r" 'isearch-toggle-regexp)
401 (define-key map "\M-e" 'isearch-edit-string)
403 (define-key map [?\M-%] 'isearch-query-replace)
404 (define-key map [?\C-\M-%] 'isearch-query-replace-regexp)
406 map)
407 "Keymap for `isearch-mode'.")
409 (defvar minibuffer-local-isearch-map
410 (let ((map (make-sparse-keymap)))
411 (set-keymap-parent map minibuffer-local-map)
412 (define-key map "\r" 'isearch-nonincremental-exit-minibuffer)
413 (define-key map "\M-\t" 'isearch-complete-edit)
414 (define-key map "\C-s" 'isearch-forward-exit-minibuffer)
415 (define-key map "\C-r" 'isearch-reverse-exit-minibuffer)
416 (define-key map "\C-f" 'isearch-yank-char-in-minibuffer)
417 (define-key map [right] 'isearch-yank-char-in-minibuffer)
418 map)
419 "Keymap for editing isearch strings in the minibuffer.")
421 ;; Internal variables declared globally for byte-compiler.
422 ;; These are all set with setq while isearching
423 ;; and bound locally while editing the search string.
425 (defvar isearch-forward nil) ; Searching in the forward direction.
426 (defvar isearch-regexp nil) ; Searching for a regexp.
427 (defvar isearch-word nil) ; Searching for words.
428 (defvar isearch-hidden nil) ; Non-nil if the string exists but is invisible.
430 (defvar isearch-cmds nil
431 "Stack of search status sets.
432 Each set is a vector of the form:
433 [STRING MESSAGE POINT SUCCESS FORWARD OTHER-END WORD
434 INVALID-REGEXP WRAPPED BARRIER WITHIN-BRACKETS CASE-FOLD-SEARCH]")
436 (defvar isearch-string "") ; The current search string.
437 (defvar isearch-message "") ; text-char-description version of isearch-string
439 (defvar isearch-success t) ; Searching is currently successful.
440 (defvar isearch-error nil) ; Error message for failed search.
441 (defvar isearch-other-end nil) ; Start (end) of match if forward (backward).
442 (defvar isearch-wrapped nil) ; Searching restarted from the top (bottom).
443 (defvar isearch-barrier 0)
444 (defvar isearch-just-started nil)
445 (defvar isearch-start-hscroll 0) ; hscroll when starting the search.
447 ; case-fold-search while searching.
448 ; either nil, t, or 'yes. 'yes means the same as t except that mixed
449 ; case in the search string is ignored.
450 (defvar isearch-case-fold-search nil)
452 (defvar isearch-last-case-fold-search nil)
454 ;; Used to save default value while isearch is active
455 (defvar isearch-original-minibuffer-message-timeout nil)
457 (defvar isearch-adjusted nil)
458 (defvar isearch-slow-terminal-mode nil)
459 ;; If t, using a small window.
460 (defvar isearch-small-window nil)
461 (defvar isearch-opoint 0)
462 ;; The window configuration active at the beginning of the search.
463 (defvar isearch-window-configuration nil)
465 ;; Flag to indicate a yank occurred, so don't move the cursor.
466 (defvar isearch-yank-flag nil)
468 ;; A function to be called after each input character is processed.
469 ;; (It is not called after characters that exit the search.)
470 ;; It is only set from an optional argument to `isearch-mode'.
471 (defvar isearch-op-fun nil)
473 ;; Is isearch-mode in a recursive edit for modal searching.
474 (defvar isearch-recursive-edit nil)
476 ;; Should isearch be terminated after doing one search?
477 (defvar isearch-nonincremental nil)
479 ;; New value of isearch-forward after isearch-edit-string.
480 (defvar isearch-new-forward nil)
482 ;; Accumulate here the overlays opened during searching.
483 (defvar isearch-opened-overlays nil)
485 ;; The value of input-method-function when isearch is invoked.
486 (defvar isearch-input-method-function nil)
488 ;; A flag to tell if input-method-function is locally bound when
489 ;; isearch is invoked.
490 (defvar isearch-input-method-local-p nil)
492 ;; Minor-mode-alist changes - kind of redundant with the
493 ;; echo area, but if isearching in multiple windows, it can be useful.
495 (or (assq 'isearch-mode minor-mode-alist)
496 (nconc minor-mode-alist
497 (list '(isearch-mode isearch-mode))))
499 (defvar isearch-mode nil) ;; Name of the minor mode, if non-nil.
500 (make-variable-buffer-local 'isearch-mode)
502 (define-key global-map "\C-s" 'isearch-forward)
503 (define-key esc-map "\C-s" 'isearch-forward-regexp)
504 (define-key global-map "\C-r" 'isearch-backward)
505 (define-key esc-map "\C-r" 'isearch-backward-regexp)
507 ;; Entry points to isearch-mode.
509 (defun isearch-forward (&optional regexp-p no-recursive-edit)
511 Do incremental search forward.
512 With a prefix argument, do an incremental regular expression search instead.
513 \\<isearch-mode-map>
514 As you type characters, they add to the search string and are found.
515 The following non-printing keys are bound in `isearch-mode-map'.
517 Type \\[isearch-delete-char] to cancel last input item from end of search string.
518 Type \\[isearch-exit] to exit, leaving point at location found.
519 Type LFD (C-j) to match end of line.
520 Type \\[isearch-repeat-forward] to search again forward,\
521 \\[isearch-repeat-backward] to search again backward.
522 Type \\[isearch-yank-word-or-char] to yank word from buffer onto end of search\
523 string and search for it.
524 Type \\[isearch-del-char] to delete character from end of search string.
525 Type \\[isearch-yank-char] to yank char from buffer onto end of search\
526 string and search for it.
527 Type \\[isearch-yank-line] to yank rest of line onto end of search string\
528 and search for it.
529 Type \\[isearch-yank-kill] to yank last killed text onto end of search string\
530 and search for it.
531 Type \\[isearch-quote-char] to quote control character to search for it.
532 \\[isearch-abort] while searching or when search has failed cancels input\
533 back to what has
534 been found successfully.
535 \\[isearch-abort] when search is successful aborts and moves point to\
536 starting point.
538 If you try to exit with the search string still empty, it invokes
539 nonincremental search.
541 Type \\[isearch-query-replace] to start `query-replace' with string to\
542 replace from last search string.
543 Type \\[isearch-query-replace-regexp] to start `query-replace-regexp'\
544 with string to replace from last search string.
546 Type \\[isearch-toggle-case-fold] to toggle search case-sensitivity.
547 Type \\[isearch-toggle-regexp] to toggle regular-expression mode.
548 Type \\[isearch-edit-string] to edit the search string in the minibuffer.
550 Also supported is a search ring of the previous 16 search strings.
551 Type \\[isearch-ring-advance] to search for the next item in the search ring.
552 Type \\[isearch-ring-retreat] to search for the previous item in the search\
553 ring.
554 Type \\[isearch-complete] to complete the search string using the search ring.
556 If an input method is turned on in the current buffer, that input
557 method is also active while you are typing characters to search. To
558 toggle the input method, type \\[isearch-toggle-input-method]. It
559 also toggles the input method in the current buffer.
561 To use a different input method for searching, type
562 \\[isearch-toggle-specified-input-method], and specify an input method
563 you want to use.
565 The above keys, bound in `isearch-mode-map', are often controlled by
566 options; do \\[apropos] on search-.* to find them.
567 Other control and meta characters terminate the search
568 and are then executed normally (depending on `search-exit-option').
569 Likewise for function keys and mouse button events.
571 If this function is called non-interactively, it does not return to
572 the calling function until the search is done."
574 (interactive "P\np")
575 (isearch-mode t (not (null regexp-p)) nil (not no-recursive-edit)))
577 (defun isearch-forward-regexp (&optional not-regexp no-recursive-edit)
579 Do incremental search forward for regular expression.
580 With a prefix argument, do a regular string search instead.
581 Like ordinary incremental search except that your input
582 is treated as a regexp. See \\[isearch-forward] for more info.
584 In regexp incremental searches, a space or spaces normally matches
585 any whitespace (the variable `search-whitespace-regexp' controls
586 precisely what that means). If you want to search for a literal space
587 and nothing else, enter C-q SPC."
588 (interactive "P\np")
589 (isearch-mode t (null not-regexp) nil (not no-recursive-edit)))
591 (defun isearch-backward (&optional regexp-p no-recursive-edit)
593 Do incremental search backward.
594 With a prefix argument, do a regular expression search instead.
595 See \\[isearch-forward] for more information."
596 (interactive "P\np")
597 (isearch-mode nil (not (null regexp-p)) nil (not no-recursive-edit)))
599 (defun isearch-backward-regexp (&optional not-regexp no-recursive-edit)
601 Do incremental search backward for regular expression.
602 With a prefix argument, do a regular string search instead.
603 Like ordinary incremental search except that your input
604 is treated as a regexp. See \\[isearch-forward] for more info."
605 (interactive "P\np")
606 (isearch-mode nil (null not-regexp) nil (not no-recursive-edit)))
609 (defun isearch-mode-help ()
610 (interactive)
611 (describe-function 'isearch-forward)
612 (isearch-update))
615 ;; isearch-mode only sets up incremental search for the minor mode.
616 ;; All the work is done by the isearch-mode commands.
618 ;; Not used yet:
619 ;;(defvar isearch-commands '(isearch-forward isearch-backward
620 ;; isearch-forward-regexp isearch-backward-regexp)
621 ;; "List of commands for which isearch-mode does not recursive-edit.")
624 (defun isearch-mode (forward &optional regexp op-fun recursive-edit word-p)
625 "Start isearch minor mode. Called by `isearch-forward', etc.
627 \\{isearch-mode-map}"
629 ;; Initialize global vars.
630 (setq isearch-forward forward
631 isearch-regexp regexp
632 isearch-word word-p
633 isearch-op-fun op-fun
634 isearch-last-case-fold-search isearch-case-fold-search
635 isearch-case-fold-search case-fold-search
636 isearch-string ""
637 isearch-message ""
638 isearch-cmds nil
639 isearch-success t
640 isearch-wrapped nil
641 isearch-barrier (point)
642 isearch-adjusted nil
643 isearch-yank-flag nil
644 isearch-error nil
645 isearch-slow-terminal-mode (and (<= baud-rate search-slow-speed)
646 (> (window-height)
647 (* 4
648 (abs search-slow-window-lines))))
649 isearch-other-end nil
650 isearch-small-window nil
651 isearch-just-started t
652 isearch-start-hscroll (window-hscroll)
654 isearch-opoint (point)
655 search-ring-yank-pointer nil
656 isearch-opened-overlays nil
657 isearch-input-method-function input-method-function
658 isearch-input-method-local-p (local-variable-p 'input-method-function)
659 regexp-search-ring-yank-pointer nil
661 ;; Save the original value of `minibuffer-message-timeout', and
662 ;; set it to nil so that isearch's messages don't get timed out.
663 isearch-original-minibuffer-message-timeout minibuffer-message-timeout
664 minibuffer-message-timeout nil)
666 ;; We must bypass input method while reading key. When a user type
667 ;; printable character, appropriate input method is turned on in
668 ;; minibuffer to read multibyte characters.
669 (or isearch-input-method-local-p
670 (make-local-variable 'input-method-function))
671 (setq input-method-function nil)
673 (looking-at "")
674 (setq isearch-window-configuration
675 (if isearch-slow-terminal-mode (current-window-configuration) nil))
677 ;; Maybe make minibuffer frame visible and/or raise it.
678 (let ((frame (window-frame (minibuffer-window))))
679 (unless (memq (frame-live-p frame) '(nil t))
680 (unless (frame-visible-p frame)
681 (make-frame-visible frame))
682 (if minibuffer-auto-raise
683 (raise-frame frame))))
685 (setq isearch-mode " Isearch") ;; forward? regexp?
686 (force-mode-line-update)
688 (isearch-push-state)
690 (setq overriding-terminal-local-map isearch-mode-map)
691 (isearch-update)
692 (run-hooks 'isearch-mode-hook)
694 (add-hook 'mouse-leave-buffer-hook 'isearch-done)
695 (add-hook 'kbd-macro-termination-hook 'isearch-done)
697 ;; isearch-mode can be made modal (in the sense of not returning to
698 ;; the calling function until searching is completed) by entering
699 ;; a recursive-edit and exiting it when done isearching.
700 (if recursive-edit
701 (let ((isearch-recursive-edit t))
702 (recursive-edit)))
703 isearch-success)
706 ;; Some high level utilities. Others below.
708 (defun isearch-update ()
709 ;; Called after each command to update the display.
710 (if (and (null unread-command-events)
711 (null executing-kbd-macro))
712 (progn
713 (if (not (input-pending-p))
714 (isearch-message))
715 (if (and isearch-slow-terminal-mode
716 (not (or isearch-small-window
717 (pos-visible-in-window-p))))
718 (let ((found-point (point)))
719 (setq isearch-small-window t)
720 (move-to-window-line 0)
721 (let ((window-min-height 1))
722 (split-window nil (if (< search-slow-window-lines 0)
723 (1+ (- search-slow-window-lines))
724 (- (window-height)
725 (1+ search-slow-window-lines)))))
726 (if (< search-slow-window-lines 0)
727 (progn (vertical-motion (- 1 search-slow-window-lines))
728 (set-window-start (next-window) (point))
729 (set-window-hscroll (next-window)
730 (window-hscroll))
731 (set-window-hscroll (selected-window) 0))
732 (other-window 1))
733 (goto-char found-point))
734 ;; Keep same hscrolling as at the start of the search when possible
735 (let ((current-scroll (window-hscroll)))
736 (set-window-hscroll (selected-window) isearch-start-hscroll)
737 (unless (pos-visible-in-window-p)
738 (set-window-hscroll (selected-window) current-scroll))))
739 (if isearch-other-end
740 (if (< isearch-other-end (point)) ; isearch-forward?
741 (isearch-highlight isearch-other-end (point))
742 (isearch-highlight (point) isearch-other-end))
743 (isearch-dehighlight))
745 (setq ;; quit-flag nil not for isearch-mode
746 isearch-adjusted nil
747 isearch-yank-flag nil)
748 (when isearch-lazy-highlight
749 (isearch-lazy-highlight-new-loop))
750 ;; We must prevent the point moving to the end of composition when a
751 ;; part of the composition has just been searched.
752 (setq disable-point-adjustment t))
754 (defun isearch-done (&optional nopush edit)
755 "Exit Isearch mode.
756 For successful search, pass no args.
757 For a failing search, NOPUSH is t.
758 For going to the minibuffer to edit the search string,
759 NOPUSH is t and EDIT is t."
761 (if isearch-resume-in-command-history
762 (let ((command `(isearch-resume ,isearch-string ,isearch-regexp
763 ,isearch-word ,isearch-forward
764 ,isearch-message
765 ',isearch-case-fold-search)))
766 (unless (equal (car command-history) command)
767 (setq command-history (cons command command-history)))))
769 (remove-hook 'mouse-leave-buffer-hook 'isearch-done)
770 (remove-hook 'kbd-macro-termination-hook 'isearch-done)
771 (setq isearch-lazy-highlight-start nil)
773 ;; Called by all commands that terminate isearch-mode.
774 ;; If NOPUSH is non-nil, we don't push the string on the search ring.
775 (setq overriding-terminal-local-map nil)
776 ;; (setq pre-command-hook isearch-old-pre-command-hook) ; for lemacs
777 (setq minibuffer-message-timeout isearch-original-minibuffer-message-timeout)
778 (isearch-dehighlight)
779 (lazy-highlight-cleanup lazy-highlight-cleanup)
780 (let ((found-start (window-start (selected-window)))
781 (found-point (point)))
782 (if isearch-window-configuration
783 (set-window-configuration isearch-window-configuration))
785 (if isearch-small-window
786 (goto-char found-point)
787 ;; Exiting the save-window-excursion clobbers window-start; restore it.
788 (set-window-start (selected-window) found-start t)))
790 (setq isearch-mode nil)
791 (if isearch-input-method-local-p
792 (setq input-method-function isearch-input-method-function)
793 (kill-local-variable 'input-method-function))
795 (force-mode-line-update)
797 ;; If we ended in the middle of some intangible text,
798 ;; move to the further end of that intangible text.
799 (let ((after (if (eobp) nil
800 (get-text-property (point) 'intangible)))
801 (before (if (bobp) nil
802 (get-text-property (1- (point)) 'intangible))))
803 (when (and before after (eq before after))
804 (if isearch-forward
805 (goto-char (next-single-property-change (point) 'intangible))
806 (goto-char (previous-single-property-change (point) 'intangible)))))
808 (if (and (> (length isearch-string) 0) (not nopush))
809 ;; Update the ring data.
810 (isearch-update-ring isearch-string isearch-regexp))
812 (let ((isearch-mode-end-hook-quit (and nopush (not edit))))
813 (run-hooks 'isearch-mode-end-hook))
815 ;; If there was movement, mark the starting position.
816 ;; Maybe should test difference between and set mark iff > threshold.
817 (if (/= (point) isearch-opoint)
818 (or (and transient-mark-mode mark-active)
819 (progn
820 (push-mark isearch-opoint t)
821 (or executing-kbd-macro (> (minibuffer-depth) 0)
822 (message "Mark saved where search started")))))
824 (and (not edit) isearch-recursive-edit (exit-recursive-edit)))
826 (defun isearch-update-ring (string &optional regexp)
827 "Add STRING to the beginning of the search ring.
828 REGEXP says which ring to use."
829 (if regexp
830 (if (or (null regexp-search-ring)
831 (not (string= string (car regexp-search-ring))))
832 (progn
833 (push string regexp-search-ring)
834 (if (> (length regexp-search-ring) regexp-search-ring-max)
835 (setcdr (nthcdr (1- search-ring-max) regexp-search-ring)
836 nil))))
837 (if (or (null search-ring)
838 (not (string= string (car search-ring))))
839 (progn
840 (push string search-ring)
841 (if (> (length search-ring) search-ring-max)
842 (setcdr (nthcdr (1- search-ring-max) search-ring) nil))))))
844 ;; Switching buffers should first terminate isearch-mode.
845 ;; ;; For Emacs 19, the frame switch event is handled.
846 ;; (defun isearch-switch-frame-handler ()
847 ;; (interactive) ;; Is this necessary?
848 ;; ;; First terminate isearch-mode.
849 ;; (isearch-done)
850 ;; (isearch-clean-overlays)
851 ;; (handle-switch-frame (car (cdr last-command-char))))
854 ;; The search status structure and stack.
856 (defsubst isearch-string-state (frame)
857 "Return the search string in FRAME."
858 (aref frame 0))
859 (defsubst isearch-message-state (frame)
860 "Return the search string to display to the user in FRAME."
861 (aref frame 1))
862 (defsubst isearch-point-state (frame)
863 "Return the point in FRAME."
864 (aref frame 2))
865 (defsubst isearch-success-state (frame)
866 "Return the success flag in FRAME."
867 (aref frame 3))
868 (defsubst isearch-forward-state (frame)
869 "Return the searching-forward flag in FRAME."
870 (aref frame 4))
871 (defsubst isearch-other-end-state (frame)
872 "Return the other end of the match in FRAME."
873 (aref frame 5))
874 (defsubst isearch-word-state (frame)
875 "Return the search-by-word flag in FRAME."
876 (aref frame 6))
877 (defsubst isearch-error-state (frame)
878 "Return the regexp error message in FRAME, or nil if its regexp is valid."
879 (aref frame 7))
880 (defsubst isearch-wrapped-state (frame)
881 "Return the search-wrapped flag in FRAME."
882 (aref frame 8))
883 (defsubst isearch-barrier-state (frame)
884 "Return the barrier value in FRAME."
885 (aref frame 9))
886 (defsubst isearch-case-fold-search-state (frame)
887 "Return the case-folding flag in FRAME."
888 (aref frame 10))
889 (defsubst isearch-pop-fun-state (frame)
890 "Return the function restoring the mode-specific isearch state in FRAME."
891 (aref frame 11))
893 (defun isearch-top-state ()
894 (let ((cmd (car isearch-cmds)))
895 (setq isearch-string (isearch-string-state cmd)
896 isearch-message (isearch-message-state cmd)
897 isearch-success (isearch-success-state cmd)
898 isearch-forward (isearch-forward-state cmd)
899 isearch-other-end (isearch-other-end-state cmd)
900 isearch-word (isearch-word-state cmd)
901 isearch-error (isearch-error-state cmd)
902 isearch-wrapped (isearch-wrapped-state cmd)
903 isearch-barrier (isearch-barrier-state cmd)
904 isearch-case-fold-search (isearch-case-fold-search-state cmd))
905 (if (functionp (isearch-pop-fun-state cmd))
906 (funcall (isearch-pop-fun-state cmd) cmd))
907 (goto-char (isearch-point-state cmd))))
909 (defun isearch-pop-state ()
910 (setq isearch-cmds (cdr isearch-cmds))
911 (isearch-top-state))
913 (defun isearch-push-state ()
914 (setq isearch-cmds
915 (cons (vector isearch-string isearch-message (point)
916 isearch-success isearch-forward isearch-other-end
917 isearch-word
918 isearch-error isearch-wrapped isearch-barrier
919 isearch-case-fold-search
920 (if isearch-push-state-function
921 (funcall isearch-push-state-function)))
922 isearch-cmds)))
925 ;; Commands active while inside of the isearch minor mode.
927 (defun isearch-exit ()
928 "Exit search normally.
929 However, if this is the first command after starting incremental
930 search and `search-nonincremental-instead' is non-nil, do a
931 nonincremental search instead via `isearch-edit-string'."
932 (interactive)
933 (if (and search-nonincremental-instead
934 (= 0 (length isearch-string)))
935 (let ((isearch-nonincremental t))
936 (isearch-edit-string)))
937 (isearch-done)
938 (isearch-clean-overlays))
941 (defun isearch-edit-string ()
942 "Edit the search string in the minibuffer.
943 The following additional command keys are active while editing.
944 \\<minibuffer-local-isearch-map>
945 \\[exit-minibuffer] to resume incremental searching with the edited string.
946 \\[isearch-nonincremental-exit-minibuffer] to do one nonincremental search.
947 \\[isearch-forward-exit-minibuffer] to resume isearching forward.
948 \\[isearch-reverse-exit-minibuffer] to resume isearching backward.
949 \\[isearch-complete-edit] to complete the search string using the search ring.
950 \\<isearch-mode-map>
951 If first char entered is \\[isearch-yank-word-or-char], then do word search instead."
953 ;; This code is very hairy for several reasons, explained in the code.
954 ;; Mainly, isearch-mode must be terminated while editing and then restarted.
955 ;; If there were a way to catch any change of buffer from the minibuffer,
956 ;; this could be simplified greatly.
957 ;; Editing doesn't back up the search point. Should it?
958 (interactive)
959 (condition-case err
960 (progn
961 (let ((isearch-nonincremental isearch-nonincremental)
963 ;; Locally bind all isearch global variables to protect them
964 ;; from recursive isearching.
965 ;; isearch-string -message and -forward are not bound
966 ;; so they may be changed. Instead, save the values.
967 (isearch-new-string isearch-string)
968 (isearch-new-message isearch-message)
969 (isearch-new-forward isearch-forward)
970 (isearch-new-word isearch-word)
972 (isearch-regexp isearch-regexp)
973 (isearch-op-fun isearch-op-fun)
974 (isearch-cmds isearch-cmds)
975 (isearch-success isearch-success)
976 (isearch-wrapped isearch-wrapped)
977 (isearch-barrier isearch-barrier)
978 (isearch-adjusted isearch-adjusted)
979 (isearch-yank-flag isearch-yank-flag)
980 (isearch-error isearch-error)
981 ;;; Don't bind this. We want isearch-search, below, to set it.
982 ;;; And the old value won't matter after that.
983 ;;; (isearch-other-end isearch-other-end)
984 ;;; Perhaps some of these other variables should be bound for a
985 ;;; shorter period, ending before the next isearch-search.
986 ;;; But there doesn't seem to be a real bug, so let's not risk it now.
987 (isearch-opoint isearch-opoint)
988 (isearch-slow-terminal-mode isearch-slow-terminal-mode)
989 (isearch-small-window isearch-small-window)
990 (isearch-recursive-edit isearch-recursive-edit)
991 ;; Save current configuration so we can restore it here.
992 (isearch-window-configuration (current-window-configuration))
994 ;; Temporarily restore `minibuffer-message-timeout'.
995 (minibuffer-message-timeout
996 isearch-original-minibuffer-message-timeout)
997 (isearch-original-minibuffer-message-timeout
998 isearch-original-minibuffer-message-timeout)
1001 ;; Actually terminate isearching until editing is done.
1002 ;; This is so that the user can do anything without failure,
1003 ;; like switch buffers and start another isearch, and return.
1004 (condition-case err
1005 (isearch-done t t)
1006 (exit nil)) ; was recursive editing
1008 (isearch-message) ;; for read-char
1009 (unwind-protect
1010 (let* (;; Why does following read-char echo?
1011 ;;(echo-keystrokes 0) ;; not needed with above message
1012 (e (let ((cursor-in-echo-area t))
1013 (read-event)))
1014 ;; Binding minibuffer-history-symbol to nil is a work-around
1015 ;; for some incompatibility with gmhist.
1016 (minibuffer-history-symbol)
1017 (message-log-max nil))
1018 ;; If the first character the user types when we prompt them
1019 ;; for a string is the yank-word character, then go into
1020 ;; word-search mode. Otherwise unread that character and
1021 ;; read a key the normal way.
1022 ;; Word search does not apply (yet) to regexp searches,
1023 ;; no check is made here.
1024 (message "%s" (isearch-message-prefix nil nil t))
1025 (if (memq (lookup-key isearch-mode-map (vector e))
1026 '(isearch-yank-word
1027 isearch-yank-word-or-char))
1028 (setq isearch-word t;; so message-prefix is right
1029 isearch-new-word t)
1030 (cancel-kbd-macro-events)
1031 (isearch-unread e))
1032 (setq cursor-in-echo-area nil)
1033 (setq isearch-new-string
1034 (read-from-minibuffer
1035 (isearch-message-prefix nil nil isearch-nonincremental)
1036 isearch-string
1037 minibuffer-local-isearch-map nil
1038 (if isearch-regexp 'regexp-search-ring 'search-ring)
1039 nil t)
1040 isearch-new-message
1041 (mapconcat 'isearch-text-char-description
1042 isearch-new-string "")))
1043 ;; Always resume isearching by restarting it.
1044 (isearch-mode isearch-forward
1045 isearch-regexp
1046 isearch-op-fun
1048 isearch-word)
1050 ;; Copy new local values to isearch globals
1051 (setq isearch-string isearch-new-string
1052 isearch-message isearch-new-message
1053 isearch-forward isearch-new-forward
1054 isearch-word isearch-new-word))
1056 ;; Empty isearch-string means use default.
1057 (if (= 0 (length isearch-string))
1058 (setq isearch-string (or (car (if isearch-regexp
1059 regexp-search-ring
1060 search-ring))
1063 isearch-message
1064 (mapconcat 'isearch-text-char-description
1065 isearch-string ""))
1066 ;; This used to set the last search string,
1067 ;; but I think it is not right to do that here.
1068 ;; Only the string actually used should be saved.
1071 ;; Push the state as of before this C-s.
1072 (isearch-push-state)
1074 ;; Reinvoke the pending search.
1075 (isearch-search)
1076 (isearch-update)
1077 (if isearch-nonincremental
1078 (progn
1079 ;; (sit-for 1) ;; needed if isearch-done does: (message "")
1080 (isearch-done)
1081 ;; The search done message is confusing when the string
1082 ;; is empty, so erase it.
1083 (if (equal isearch-string "")
1084 (message "")))))
1086 (quit ; handle abort-recursive-edit
1087 (isearch-abort) ;; outside of let to restore outside global values
1090 (defun isearch-nonincremental-exit-minibuffer ()
1091 (interactive)
1092 (setq isearch-nonincremental t)
1093 (exit-minibuffer))
1095 (defun isearch-forward-exit-minibuffer ()
1096 (interactive)
1097 (setq isearch-new-forward t)
1098 (exit-minibuffer))
1100 (defun isearch-reverse-exit-minibuffer ()
1101 (interactive)
1102 (setq isearch-new-forward nil)
1103 (exit-minibuffer))
1105 (defun isearch-cancel ()
1106 "Terminate the search and go back to the starting point."
1107 (interactive)
1108 (if (functionp (isearch-pop-fun-state (car (last isearch-cmds))))
1109 (funcall (isearch-pop-fun-state (car (last isearch-cmds)))
1110 (car (last isearch-cmds))))
1111 (goto-char isearch-opoint)
1112 (isearch-done t) ; exit isearch
1113 (isearch-clean-overlays)
1114 (signal 'quit nil)) ; and pass on quit signal
1116 (defun isearch-abort ()
1117 "Abort incremental search mode if searching is successful, signaling quit.
1118 Otherwise, revert to previous successful search and continue searching.
1119 Use `isearch-exit' to quit without signaling."
1120 (interactive)
1121 ;; (ding) signal instead below, if quitting
1122 (discard-input)
1123 (if isearch-success
1124 ;; If search is successful, move back to starting point
1125 ;; and really do quit.
1126 (progn
1127 (setq isearch-success nil)
1128 (isearch-cancel))
1129 ;; If search is failing, or has an incomplete regexp,
1130 ;; rub out until it is once more successful.
1131 (while (or (not isearch-success) isearch-error)
1132 (isearch-pop-state))
1133 (isearch-update)))
1135 (defun isearch-repeat (direction)
1136 ;; Utility for isearch-repeat-forward and -backward.
1137 (if (eq isearch-forward (eq direction 'forward))
1138 ;; C-s in forward or C-r in reverse.
1139 (if (equal isearch-string "")
1140 ;; If search string is empty, use last one.
1141 (if (null (if isearch-regexp regexp-search-ring search-ring))
1142 (setq isearch-error "No previous search string")
1143 (setq isearch-string
1144 (if isearch-regexp
1145 (car regexp-search-ring)
1146 (car search-ring))
1147 isearch-message
1148 (mapconcat 'isearch-text-char-description
1149 isearch-string "")
1150 isearch-case-fold-search isearch-last-case-fold-search))
1151 ;; If already have what to search for, repeat it.
1152 (or isearch-success
1153 (progn
1154 ;; Set isearch-wrapped before calling isearch-wrap-function
1155 (setq isearch-wrapped t)
1156 (if isearch-wrap-function
1157 (funcall isearch-wrap-function)
1158 (goto-char (if isearch-forward (point-min) (point-max)))))))
1159 ;; C-s in reverse or C-r in forward, change direction.
1160 (setq isearch-forward (not isearch-forward)
1161 isearch-success t))
1163 (setq isearch-barrier (point)) ; For subsequent \| if regexp.
1165 (if (equal isearch-string "")
1166 (setq isearch-success t)
1167 (if (and isearch-success
1168 (equal (point) isearch-other-end)
1169 (not isearch-just-started))
1170 ;; If repeating a search that found
1171 ;; an empty string, ensure we advance.
1172 (if (if isearch-forward (eobp) (bobp))
1173 ;; If there's nowhere to advance to, fail (and wrap next time).
1174 (progn
1175 (setq isearch-success nil)
1176 (ding))
1177 (forward-char (if isearch-forward 1 -1))
1178 (isearch-search))
1179 (isearch-search)))
1181 (isearch-push-state)
1182 (isearch-update))
1184 (defun isearch-repeat-forward ()
1185 "Repeat incremental search forwards."
1186 (interactive)
1187 (isearch-repeat 'forward))
1189 (defun isearch-repeat-backward ()
1190 "Repeat incremental search backwards."
1191 (interactive)
1192 (isearch-repeat 'backward))
1194 (defun isearch-toggle-regexp ()
1195 "Toggle regexp searching on or off."
1196 ;; The status stack is left unchanged.
1197 (interactive)
1198 (setq isearch-regexp (not isearch-regexp))
1199 (if isearch-regexp (setq isearch-word nil))
1200 (setq isearch-success t isearch-adjusted t)
1201 (isearch-update))
1203 (defun isearch-toggle-case-fold ()
1204 "Toggle case folding in searching on or off."
1205 (interactive)
1206 (setq isearch-case-fold-search
1207 (if isearch-case-fold-search nil 'yes))
1208 (let ((message-log-max nil))
1209 (message "%s%s [case %ssensitive]"
1210 (isearch-message-prefix nil nil isearch-nonincremental)
1211 isearch-message
1212 (if isearch-case-fold-search "in" "")))
1213 (setq isearch-success t isearch-adjusted t)
1214 (sit-for 1)
1215 (isearch-update))
1217 (defun isearch-query-replace (&optional regexp-flag)
1218 "Start query-replace with string to replace from last search string."
1219 (interactive)
1220 (barf-if-buffer-read-only)
1221 (if regexp-flag (setq isearch-regexp t))
1222 (let ((case-fold-search isearch-case-fold-search))
1223 (isearch-done)
1224 (isearch-clean-overlays)
1225 (if (and (< isearch-other-end (point))
1226 (not (and transient-mark-mode mark-active
1227 (< isearch-opoint (point)))))
1228 (goto-char isearch-other-end))
1229 (set query-replace-from-history-variable
1230 (cons isearch-string
1231 (symbol-value query-replace-from-history-variable)))
1232 (perform-replace
1233 isearch-string
1234 (query-replace-read-to
1235 isearch-string
1236 (if isearch-regexp "Query replace regexp" "Query replace")
1237 isearch-regexp)
1238 t isearch-regexp isearch-word nil nil
1239 (if (and transient-mark-mode mark-active) (region-beginning))
1240 (if (and transient-mark-mode mark-active) (region-end)))))
1242 (defun isearch-query-replace-regexp ()
1243 "Start query-replace-regexp with string to replace from last search string."
1244 (interactive)
1245 (isearch-query-replace t))
1248 (defun isearch-delete-char ()
1249 "Discard last input item and move point back.
1250 If no previous match was done, just beep."
1251 (interactive)
1252 (if (null (cdr isearch-cmds))
1253 (ding)
1254 (isearch-pop-state))
1255 (isearch-update))
1257 (defun isearch-del-char (&optional arg)
1258 "Delete character from end of search string and search again.
1259 If search string is empty, just beep."
1260 (interactive "p")
1261 (if (= 0 (length isearch-string))
1262 (ding)
1263 (setq isearch-string (substring isearch-string 0 (- (or arg 1)))
1264 isearch-message (mapconcat 'isearch-text-char-description
1265 isearch-string "")
1266 ;; Don't move cursor in reverse search.
1267 isearch-yank-flag t))
1268 (isearch-search-and-update))
1270 (defun isearch-yank-string (string)
1271 "Pull STRING into search string."
1272 ;; Downcase the string if not supposed to case-fold yanked strings.
1273 (if (and isearch-case-fold-search
1274 (eq 'not-yanks search-upper-case))
1275 (setq string (downcase string)))
1276 (if isearch-regexp (setq string (regexp-quote string)))
1277 (setq isearch-string (concat isearch-string string)
1278 isearch-message
1279 (concat isearch-message
1280 (mapconcat 'isearch-text-char-description
1281 string ""))
1282 ;; Don't move cursor in reverse search.
1283 isearch-yank-flag t)
1284 (isearch-search-and-update))
1286 (defun isearch-yank-kill ()
1287 "Pull string from kill ring into search string."
1288 (interactive)
1289 (isearch-yank-string (current-kill 0)))
1291 (defun isearch-yank-x-selection ()
1292 "Pull current X selection into search string."
1293 (interactive)
1294 (isearch-yank-string (x-get-selection)))
1297 (defun isearch-mouse-2 (click)
1298 "Handle mouse-2 in Isearch mode.
1299 For a click in the echo area, invoke `isearch-yank-x-selection'.
1300 Otherwise invoke whatever mouse-2 is bound to outside of Isearch."
1301 (interactive "e")
1302 (let* ((w (posn-window (event-start click)))
1303 (overriding-terminal-local-map nil)
1304 (key (vector (event-basic-type click)))
1305 ;; FIXME: `key-binding' should accept an event as argument
1306 ;; and do all the overlay/text-properties lookup etc...
1307 (binding (with-current-buffer
1308 (if (window-live-p w) (window-buffer w) (current-buffer))
1309 (key-binding key))))
1310 (if (and (window-minibuffer-p w)
1311 (not (minibuffer-window-active-p w))) ; in echo area
1312 (isearch-yank-x-selection)
1313 (when (functionp binding)
1314 (call-interactively binding)))))
1317 (defun isearch-yank-internal (jumpform)
1318 "Pull the text from point to the point reached by JUMPFORM.
1319 JUMPFORM is a lambda expression that takes no arguments and returns a
1320 buffer position, possibly having moved point to that position. For
1321 example, it might move point forward by a word and return point, or it
1322 might return the position of the end of the line."
1323 (isearch-yank-string
1324 (save-excursion
1325 (and (not isearch-forward) isearch-other-end
1326 (goto-char isearch-other-end))
1327 (buffer-substring-no-properties (point) (funcall jumpform)))))
1329 (defun isearch-yank-char-in-minibuffer (&optional arg)
1330 "Pull next character from buffer into end of search string in minibuffer."
1331 (interactive "p")
1332 (if (eobp)
1333 (insert
1334 (save-excursion
1335 (set-buffer (cadr (buffer-list)))
1336 (buffer-substring-no-properties
1337 (point) (progn (forward-char arg) (point)))))
1338 (forward-char arg)))
1340 (defun isearch-yank-char (&optional arg)
1341 "Pull next character from buffer into search string."
1342 (interactive "p")
1343 (isearch-yank-internal (lambda () (forward-char arg) (point))))
1345 (defun isearch-yank-word-or-char ()
1346 "Pull next character or word from buffer into search string."
1347 (interactive)
1348 (isearch-yank-internal
1349 (lambda ()
1350 (if (or (= (char-syntax (or (char-after) 0)) ?w)
1351 (= (char-syntax (or (char-after (1+ (point))) 0)) ?w))
1352 (forward-word 1)
1353 (forward-char 1)) (point))))
1355 (defun isearch-yank-word ()
1356 "Pull next word from buffer into search string."
1357 (interactive)
1358 (isearch-yank-internal (lambda () (forward-word 1) (point))))
1360 (defun isearch-yank-line ()
1361 "Pull rest of line from buffer into search string."
1362 (interactive)
1363 (isearch-yank-internal
1364 (lambda () (line-end-position (if (eolp) 2 1)))))
1366 (defun isearch-search-and-update ()
1367 ;; Do the search and update the display.
1368 (when (or isearch-success
1369 ;; Unsuccessful regexp search may become successful by
1370 ;; addition of characters which make isearch-string valid
1371 isearch-regexp
1372 ;; If the string was found but was completely invisible,
1373 ;; it might now be partly visible, so try again.
1374 (prog1 isearch-hidden (setq isearch-hidden nil)))
1375 ;; In reverse search, adding stuff at
1376 ;; the end may cause zero or many more chars to be
1377 ;; matched, in the string following point.
1378 ;; Allow all those possibilities without moving point as
1379 ;; long as the match does not extend past search origin.
1380 (if (and (not isearch-forward) (not isearch-adjusted)
1381 (condition-case ()
1382 (let ((case-fold-search isearch-case-fold-search))
1383 (if (and (eq case-fold-search t) search-upper-case)
1384 (setq case-fold-search
1385 (isearch-no-upper-case-p isearch-string isearch-regexp)))
1386 (looking-at (if isearch-regexp isearch-string
1387 (regexp-quote isearch-string))))
1388 (error nil))
1389 (or isearch-yank-flag
1390 (<= (match-end 0)
1391 (min isearch-opoint isearch-barrier))))
1392 (progn
1393 (setq isearch-success t
1394 isearch-error nil
1395 isearch-other-end (match-end 0))
1396 (if (and (eq isearch-case-fold-search t) search-upper-case)
1397 (setq isearch-case-fold-search
1398 (isearch-no-upper-case-p isearch-string isearch-regexp))))
1399 ;; Not regexp, not reverse, or no match at point.
1400 (if (and isearch-other-end (not isearch-adjusted))
1401 (goto-char (if isearch-forward isearch-other-end
1402 (min isearch-opoint
1403 isearch-barrier
1404 (1+ isearch-other-end)))))
1405 (isearch-search)
1407 (isearch-push-state)
1408 (if isearch-op-fun (funcall isearch-op-fun))
1409 (isearch-update))
1412 ;; *, ?, }, and | chars can make a regexp more liberal.
1413 ;; They can make a regexp match sooner or make it succeed instead of failing.
1414 ;; So go back to place last successful search started
1415 ;; or to the last ^S/^R (barrier), whichever is nearer.
1416 ;; + needs no special handling because the string must match at least once.
1418 (defun isearch-backslash (str)
1419 "Return t if STR ends in an odd number of backslashes."
1420 (= (mod (- (length str) (string-match "\\\\*\\'" str)) 2) 1))
1422 (defun isearch-fallback (want-backslash &optional allow-invalid to-barrier)
1423 "Return point to previous successful match to allow regexp liberalization.
1424 \\<isearch-mode-map>
1425 Respects \\[isearch-repeat-forward] and \\[isearch-repeat-backward] by
1426 stopping at `isearch-barrier' as needed.
1428 Do nothing if a backslash is escaping the liberalizing character.
1429 If WANT-BACKSLASH is non-nil, invert this behavior (for \\} and \\|).
1431 Do nothing if regexp has recently been invalid unless optional
1432 ALLOW-INVALID non-nil.
1434 If optional TO-BARRIER non-nil, ignore previous matches and go exactly
1435 to the barrier."
1436 ;; (eq (not a) (not b)) makes all non-nil values equivalent
1437 (when (and isearch-regexp (eq (not (isearch-backslash isearch-string))
1438 (not want-backslash))
1439 ;; We have to check 2 stack frames because the last might be
1440 ;; invalid just because of a backslash.
1441 (or (not isearch-error)
1442 (not (isearch-error-state (cadr isearch-cmds)))
1443 allow-invalid))
1444 (if to-barrier
1445 (progn (goto-char isearch-barrier)
1446 (setq isearch-adjusted t))
1447 (let* ((stack isearch-cmds)
1448 (previous (cdr stack)) ; lookbelow in the stack
1449 (frame (car stack)))
1450 ;; Walk down the stack looking for a valid regexp (as of course only
1451 ;; they can be the previous successful match); this conveniently
1452 ;; removes all bracket-sets and groups that might be in the way, as
1453 ;; well as partial \{\} constructs that the code below leaves behind.
1454 ;; Also skip over postfix operators -- though horrid,
1455 ;; 'ab?\{5,6\}+\{1,2\}*' is perfectly legal.
1456 (while (and previous
1457 (or (isearch-error-state frame)
1458 (let* ((string (isearch-string-state frame))
1459 (lchar (aref string (1- (length string)))))
1460 ;; The operators aren't always operators; check
1461 ;; backslashes. This doesn't handle the case of
1462 ;; operators at the beginning of the regexp not
1463 ;; being special, but then we should fall back to
1464 ;; the barrier anyway because it's all optional.
1465 (if (isearch-backslash
1466 (isearch-string-state (car previous)))
1467 (eq lchar ?\})
1468 (memq lchar '(?* ?? ?+))))))
1469 (setq stack previous previous (cdr previous) frame (car stack)))
1470 (when stack
1471 ;; `stack' now refers the most recent valid regexp that is not at
1472 ;; all optional in its last term. Now dig one level deeper and find
1473 ;; what matched before that.
1474 (let ((last-other-end
1475 (or (and (car previous)
1476 (isearch-other-end-state (car previous)))
1477 isearch-barrier)))
1478 (goto-char (if isearch-forward
1479 (max last-other-end isearch-barrier)
1480 (min last-other-end isearch-barrier)))
1481 (setq isearch-adjusted t)))))))
1483 (defun isearch-unread-key-sequence (keylist)
1484 "Unread the given key-sequence KEYLIST.
1485 Scroll-bar or mode-line events are processed appropriately."
1486 (cancel-kbd-macro-events)
1487 (apply 'isearch-unread keylist)
1488 ;; If the event was a scroll-bar or mode-line click, the event will have
1489 ;; been prefixed by a symbol such as vertical-scroll-bar. We must remove
1490 ;; it here, because this symbol will be attached to the event again next
1491 ;; time it gets read by read-key-sequence.
1493 ;; (Old comment from isearch-other-meta-char: "Note that we don't have to
1494 ;; modify the event anymore in 21 because read_key_sequence no longer
1495 ;; modifies events to produce fake prefix keys.")
1496 (if (and (> (length keylist) 1)
1497 (symbolp (car keylist))
1498 (listp (cadr keylist))
1499 (not (numberp (posn-point
1500 (event-start (cadr keylist) )))))
1501 (pop unread-command-events)))
1503 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
1504 ;; scrolling within Isearch mode. Alan Mackenzie (acm@muc.de), 2003/2/24
1506 ;; The idea here is that certain vertical scrolling commands (like C-l
1507 ;; `recenter') should be usable WITHIN Isearch mode. For a command to be
1508 ;; suitable, it must NOT alter the buffer, swap to another buffer or frame,
1509 ;; tamper with isearch's state, or move point. It is unacceptable for the
1510 ;; search string to be scrolled out of the current window. If a command
1511 ;; attempts this, we scroll the text back again.
1513 ;; We implement this feature with a property called `isearch-scroll'.
1514 ;; If a command's symbol has the value t for this property it is a
1515 ;; scrolling command. The feature needs to be enabled by setting the
1516 ;; customizable variable `isearch-allow-scroll' to a non-nil value.
1518 ;; The universal argument commands (e.g. C-u) in simple.el are marked
1519 ;; as scrolling commands, and isearch.el has been amended to allow
1520 ;; prefix arguments to be passed through to scrolling commands. Thus
1521 ;; M-0 C-l will scroll point to the top of the window.
1523 ;; Horizontal scrolling commands are currently not catered for.
1524 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
1526 ;; Set the isearch-scroll property on some standard functions:
1527 ;; Scroll-bar functions:
1528 (if (fboundp 'scroll-bar-toolkit-scroll)
1529 (put 'scroll-bar-toolkit-scroll 'isearch-scroll t))
1530 (if (fboundp 'mac-handle-scroll-bar-event)
1531 (put 'mac-handle-scroll-bar-event 'isearch-scroll t))
1532 (if (fboundp 'w32-handle-scroll-bar-event)
1533 (put 'w32-handle-scroll-bar-event 'isearch-scroll t))
1535 ;; Commands which scroll the window:
1536 (put 'recenter 'isearch-scroll t)
1537 (put 'reposition-window 'isearch-scroll t)
1538 (put 'scroll-up 'isearch-scroll t)
1539 (put 'scroll-down 'isearch-scroll t)
1541 ;; Commands which act on the other window
1542 (put 'list-buffers 'isearch-scroll t)
1543 (put 'scroll-other-window 'isearch-scroll t)
1544 (put 'scroll-other-window-down 'isearch-scroll t)
1545 (put 'beginning-of-buffer-other-window 'isearch-scroll t)
1546 (put 'end-of-buffer-other-window 'isearch-scroll t)
1548 ;; Commands which change the window layout
1549 (put 'delete-other-windows 'isearch-scroll t)
1550 (put 'balance-windows 'isearch-scroll t)
1551 (put 'split-window-vertically 'isearch-scroll t)
1552 (put 'split-window-horizontally 'isearch-scroll t)
1553 (put 'enlarge-window 'isearch-scroll t)
1555 ;; Universal argument commands
1556 (put 'universal-argument 'isearch-scroll t)
1557 (put 'negative-argument 'isearch-scroll t)
1558 (put 'digit-argument 'isearch-scroll t)
1560 (defcustom isearch-allow-scroll nil
1561 "If non-nil, scrolling commands are allowed during incremental search."
1562 :type 'boolean
1563 :group 'isearch)
1565 (defun isearch-string-out-of-window (isearch-point)
1566 "Test whether the search string is currently outside of the window.
1567 Return nil if it's completely visible, or if point is visible,
1568 together with as much of the search string as will fit; the symbol
1569 `above' if we need to scroll the text downwards; the symbol `below',
1570 if upwards."
1571 (let ((w-start (window-start))
1572 (w-end (window-end nil t))
1573 (w-L1 (save-excursion (move-to-window-line 1) (point)))
1574 (w-L-1 (save-excursion (move-to-window-line -1) (point)))
1575 start end) ; start and end of search string in buffer
1576 (if isearch-forward
1577 (setq end isearch-point start (or isearch-other-end isearch-point))
1578 (setq start isearch-point end (or isearch-other-end isearch-point)))
1579 (cond ((or (and (>= start w-start) (<= end w-end))
1580 (if isearch-forward
1581 (and (>= isearch-point w-L-1) (< isearch-point w-end)) ; point on Line -1
1582 (and (>= isearch-point w-start) (< isearch-point w-L1)))) ; point on Line 0
1583 nil)
1584 ((and (< start w-start)
1585 (< isearch-point w-L-1))
1586 'above)
1587 (t 'below))))
1589 (defun isearch-back-into-window (above isearch-point)
1590 "Scroll the window to bring the search string back into view.
1591 Restore point to ISEARCH-POINT in the process. ABOVE is t when the
1592 search string is above the top of the window, nil when it is beneath
1593 the bottom."
1594 (let (start end)
1595 (if isearch-forward
1596 (setq end isearch-point start (or isearch-other-end isearch-point))
1597 (setq start isearch-point end (or isearch-other-end isearch-point)))
1598 (if above
1599 (progn
1600 (goto-char start)
1601 (recenter 0)
1602 (when (>= isearch-point (window-end nil t))
1603 (goto-char isearch-point)
1604 (recenter -1)))
1605 (goto-char end)
1606 (recenter -1)
1607 (when (< isearch-point (window-start))
1608 (goto-char isearch-point)
1609 (recenter 0))))
1610 (goto-char isearch-point))
1612 (defun isearch-reread-key-sequence-naturally (keylist)
1613 "Reread key sequence KEYLIST with Isearch mode's keymap deactivated.
1614 Return the key sequence as a string/vector."
1615 (isearch-unread-key-sequence keylist)
1616 (let (overriding-terminal-local-map)
1617 (read-key-sequence nil))) ; This will go through function-key-map, if nec.
1619 (defun isearch-lookup-scroll-key (key-seq)
1620 "If KEY-SEQ is bound to a scrolling command, return it as a symbol.
1621 Otherwise return nil."
1622 (let* ((overriding-terminal-local-map nil)
1623 (binding (key-binding key-seq)))
1624 (and binding (symbolp binding) (commandp binding)
1625 (eq (get binding 'isearch-scroll) t)
1626 binding)))
1628 (defalias 'isearch-other-control-char 'isearch-other-meta-char)
1630 (defun isearch-other-meta-char (&optional arg)
1631 "Process a miscellaneous key sequence in Isearch mode.
1633 Try to convert the current key-sequence to something usable in Isearch
1634 mode, either by converting it with `function-key-map', downcasing a
1635 key with C-<upper case>, or finding a \"scrolling command\" bound to
1636 it. \(In the last case, we may have to read more events.) If so,
1637 either unread the converted sequence or execute the command.
1639 Otherwise, if `search-exit-option' is non-nil (the default) unread the
1640 key-sequence and exit the search normally. If it is the symbol
1641 `edit', the search string is edited in the minibuffer and the meta
1642 character is unread so that it applies to editing the string.
1644 ARG is the prefix argument. It will be transmitted through to the
1645 scrolling command or to the command whose key-sequence exits
1646 Isearch mode."
1647 (interactive "P")
1648 (let* ((key (if current-prefix-arg ; not nec the same as ARG
1649 (substring (this-command-keys) universal-argument-num-events)
1650 (this-command-keys)))
1651 (main-event (aref key 0))
1652 (keylist (listify-key-sequence key))
1653 scroll-command isearch-point)
1654 (cond ((and (= (length key) 1)
1655 (let ((lookup (lookup-key function-key-map key)))
1656 (not (or (null lookup) (integerp lookup)
1657 (keymapp lookup)))))
1658 ;; Handle a function key that translates into something else.
1659 ;; If the key has a global definition too,
1660 ;; exit and unread the key itself, so its global definition runs.
1661 ;; Otherwise, unread the translation,
1662 ;; so that the translated key takes effect within isearch.
1663 (cancel-kbd-macro-events)
1664 (if (lookup-key global-map key)
1665 (progn
1666 (isearch-done)
1667 (apply 'isearch-unread keylist))
1668 (setq keylist
1669 (listify-key-sequence (lookup-key function-key-map key)))
1670 (while keylist
1671 (setq key (car keylist))
1672 ;; If KEY is a printing char, we handle it here
1673 ;; directly to avoid the input method and keyboard
1674 ;; coding system translating it.
1675 (if (and (integerp key)
1676 (>= key ?\s) (/= key 127) (< key 256))
1677 (progn
1678 (isearch-process-search-char key)
1679 (setq keylist (cdr keylist)))
1680 ;; As the remaining keys in KEYLIST can't be handled
1681 ;; here, we must reread them.
1682 (apply 'isearch-unread keylist)
1683 (setq keylist nil)))))
1685 ;; Handle an undefined shifted control character
1686 ;; by downshifting it if that makes it defined.
1687 ;; (As read-key-sequence would normally do,
1688 ;; if we didn't have a default definition.)
1689 (let ((mods (event-modifiers main-event)))
1690 (and (integerp main-event)
1691 (memq 'shift mods)
1692 (memq 'control mods)
1693 (lookup-key isearch-mode-map
1694 (let ((copy (copy-sequence key)))
1695 (aset copy 0
1696 (- main-event (- ?\C-\S-a ?\C-a)))
1697 copy)
1698 nil)))
1699 (setcar keylist (- main-event (- ?\C-\S-a ?\C-a)))
1700 (cancel-kbd-macro-events)
1701 (apply 'isearch-unread keylist))
1702 ((eq search-exit-option 'edit)
1703 (apply 'isearch-unread keylist)
1704 (isearch-edit-string))
1705 ;; Handle a scrolling function.
1706 ((and isearch-allow-scroll
1707 (progn (setq key (isearch-reread-key-sequence-naturally keylist))
1708 (setq keylist (listify-key-sequence key))
1709 (setq main-event (aref key 0))
1710 (setq scroll-command (isearch-lookup-scroll-key key))))
1711 ;; From this point onwards, KEY, KEYLIST and MAIN-EVENT hold a
1712 ;; complete key sequence, possibly as modified by function-key-map,
1713 ;; not merely the one or two event fragment which invoked
1714 ;; isearch-other-meta-char in the first place.
1715 (setq isearch-point (point))
1716 (setq prefix-arg arg)
1717 (command-execute scroll-command)
1718 (let ((ab-bel (isearch-string-out-of-window isearch-point)))
1719 (if ab-bel
1720 (isearch-back-into-window (eq ab-bel 'above) isearch-point)
1721 (goto-char isearch-point)))
1722 (isearch-update))
1723 (search-exit-option
1724 (let (window)
1725 (isearch-unread-key-sequence keylist)
1726 (setq main-event (car unread-command-events))
1728 ;; If we got a mouse click event, that event contains the
1729 ;; window clicked on. maybe it was read with the buffer
1730 ;; it was clicked on. If so, that buffer, not the current one,
1731 ;; is in isearch mode. So end the search in that buffer.
1733 ;; ??? I have no idea what this if checks for, but it's
1734 ;; obviously wrong for the case that a down-mouse event
1735 ;; on another window invokes this function. The event
1736 ;; will contain the window clicked on and that window's
1737 ;; buffer is certainly not always in Isearch mode.
1739 ;; Leave the code in, but check for current buffer not
1740 ;; being in Isearch mode for now, until someone tells
1741 ;; what it's really supposed to do.
1743 ;; --gerd 2001-08-10.
1745 (if (and (not isearch-mode)
1746 (listp main-event)
1747 (setq window (posn-window (event-start main-event)))
1748 (windowp window)
1749 (or (> (minibuffer-depth) 0)
1750 (not (window-minibuffer-p window))))
1751 (save-excursion
1752 (set-buffer (window-buffer window))
1753 (isearch-done)
1754 (isearch-clean-overlays))
1755 (isearch-done)
1756 (isearch-clean-overlays)
1757 (setq prefix-arg arg))))
1758 (t;; otherwise nil
1759 (isearch-process-search-string key key)))))
1761 (defun isearch-quote-char ()
1762 "Quote special characters for incremental search."
1763 (interactive)
1764 (let ((char (read-quoted-char (isearch-message t))))
1765 ;; Assume character codes 0200 - 0377 stand for characters in some
1766 ;; single-byte character set, and convert them to Emacs
1767 ;; characters.
1768 (if (and isearch-regexp (= char ?\s))
1769 (if (subregexp-context-p isearch-string (length isearch-string))
1770 (isearch-process-search-string "[ ]" " ")
1771 (isearch-process-search-char char))
1772 (and enable-multibyte-characters
1773 (>= char ?\200)
1774 (<= char ?\377)
1775 (setq char (unibyte-char-to-multibyte char)))
1776 (isearch-process-search-char char))))
1778 (defun isearch-return-char ()
1779 "Convert return into newline for incremental search."
1780 (interactive)
1781 (isearch-process-search-char ?\n))
1782 (make-obsolete 'isearch-return-char 'isearch-printing-char)
1784 (defun isearch-printing-char ()
1785 "Add this ordinary printing character to the search string and search."
1786 (interactive)
1787 (let ((char last-command-char))
1788 (if (= char ?\S-\ )
1789 (setq char ?\s))
1790 (if (and enable-multibyte-characters
1791 (>= char ?\200)
1792 (<= char ?\377))
1793 (if (keyboard-coding-system)
1794 (isearch-process-search-multibyte-characters char)
1795 (isearch-process-search-char (unibyte-char-to-multibyte char)))
1796 (if current-input-method
1797 (isearch-process-search-multibyte-characters char)
1798 (isearch-process-search-char char)))))
1800 (defun isearch-process-search-char (char)
1801 ;; * and ? are special in regexps when not preceded by \.
1802 ;; } and | are special in regexps when preceded by \.
1803 ;; Nothing special for + because it matches at least once.
1804 (cond
1805 ((memq char '(?* ??)) (isearch-fallback nil))
1806 ((eq char ?\}) (isearch-fallback t t))
1807 ((eq char ?|) (isearch-fallback t nil t)))
1809 ;; Append the char to the search string, update the message and re-search.
1810 (isearch-process-search-string
1811 (char-to-string char)
1812 (if (>= char ?\200)
1813 (char-to-string char)
1814 (isearch-text-char-description char))))
1816 (defun isearch-process-search-string (string message)
1817 (setq isearch-string (concat isearch-string string)
1818 isearch-message (concat isearch-message message))
1819 (isearch-search-and-update))
1822 ;; Search Ring
1824 (defun isearch-ring-adjust1 (advance)
1825 ;; Helper for isearch-ring-adjust
1826 (let* ((ring (if isearch-regexp regexp-search-ring search-ring))
1827 (length (length ring))
1828 (yank-pointer-name (if isearch-regexp
1829 'regexp-search-ring-yank-pointer
1830 'search-ring-yank-pointer))
1831 (yank-pointer (eval yank-pointer-name)))
1832 (if (zerop length)
1834 (set yank-pointer-name
1835 (setq yank-pointer
1836 (mod (+ (or yank-pointer 0)
1837 (if advance -1 1))
1838 length)))
1839 (setq isearch-string (nth yank-pointer ring)
1840 isearch-message (mapconcat 'isearch-text-char-description
1841 isearch-string "")))))
1843 (defun isearch-ring-adjust (advance)
1844 ;; Helper for isearch-ring-advance and isearch-ring-retreat
1845 (isearch-ring-adjust1 advance)
1846 (if search-ring-update
1847 (progn
1848 (isearch-search)
1849 (isearch-update))
1850 (isearch-edit-string)
1852 (isearch-push-state))
1854 (defun isearch-ring-advance ()
1855 "Advance to the next search string in the ring."
1856 ;; This could be more general to handle a prefix arg, but who would use it.
1857 (interactive)
1858 (isearch-ring-adjust 'advance))
1860 (defun isearch-ring-retreat ()
1861 "Retreat to the previous search string in the ring."
1862 (interactive)
1863 (isearch-ring-adjust nil))
1865 (defun isearch-complete1 ()
1866 ;; Helper for isearch-complete and isearch-complete-edit
1867 ;; Return t if completion OK, nil if no completion exists.
1868 (let* ((ring (if isearch-regexp regexp-search-ring search-ring))
1869 (completion-ignore-case case-fold-search)
1870 (completion (try-completion isearch-string ring)))
1871 (cond
1872 ((eq completion t)
1873 ;; isearch-string stays the same
1875 ((or completion ; not nil, must be a string
1876 (= 0 (length isearch-string))) ; shouldn't have to say this
1877 (if (equal completion isearch-string) ;; no extension?
1878 (progn
1879 (if completion-auto-help
1880 (with-output-to-temp-buffer "*Isearch completions*"
1881 (display-completion-list
1882 (all-completions isearch-string ring))))
1884 (and completion
1885 (setq isearch-string completion))))
1887 (message "No completion") ; waits a second if in minibuffer
1888 nil))))
1890 (defun isearch-complete ()
1891 "Complete the search string from the strings on the search ring.
1892 The completed string is then editable in the minibuffer.
1893 If there is no completion possible, say so and continue searching."
1894 (interactive)
1895 (if (isearch-complete1)
1896 (progn (setq isearch-message
1897 (mapconcat 'isearch-text-char-description
1898 isearch-string ""))
1899 (isearch-edit-string))
1900 ;; else
1901 (sit-for 1)
1902 (isearch-update)))
1904 (defun isearch-complete-edit ()
1905 "Same as `isearch-complete' except in the minibuffer."
1906 (interactive)
1907 (setq isearch-string (field-string))
1908 (if (isearch-complete1)
1909 (progn
1910 (delete-field)
1911 (insert isearch-string))))
1914 ;; Message string
1916 (defun isearch-message (&optional c-q-hack ellipsis)
1917 ;; Generate and print the message string.
1918 (let ((cursor-in-echo-area ellipsis)
1919 (m (concat
1920 (isearch-message-prefix c-q-hack ellipsis isearch-nonincremental)
1921 (if (and (not isearch-success)
1922 (string-match " +$" isearch-message))
1923 (concat
1924 (substring isearch-message 0 (match-beginning 0))
1925 (propertize (substring isearch-message (match-beginning 0))
1926 'face 'trailing-whitespace))
1927 isearch-message)
1928 (isearch-message-suffix c-q-hack ellipsis)
1930 (if c-q-hack
1932 (let ((message-log-max nil))
1933 (message "%s" m)))))
1935 (defun isearch-message-prefix (&optional c-q-hack ellipsis nonincremental)
1936 ;; If about to search, and previous search regexp was invalid,
1937 ;; check that it still is. If it is valid now,
1938 ;; let the message we display while searching say that it is valid.
1939 (and isearch-error ellipsis
1940 (condition-case ()
1941 (progn (re-search-forward isearch-string (point) t)
1942 (setq isearch-error nil))
1943 (error nil)))
1944 ;; If currently failing, display no ellipsis.
1945 (or isearch-success (setq ellipsis nil))
1946 (let ((m (concat (if isearch-success "" "failing ")
1947 (if isearch-adjusted "pending " "")
1948 (if (and isearch-wrapped
1949 (not isearch-wrap-function)
1950 (if isearch-forward
1951 (> (point) isearch-opoint)
1952 (< (point) isearch-opoint)))
1953 "over")
1954 (if isearch-wrapped "wrapped ")
1955 (if isearch-word "word " "")
1956 (if isearch-regexp "regexp " "")
1957 (if nonincremental "search" "I-search")
1958 (if isearch-forward "" " backward")
1959 (if current-input-method
1960 (concat " [" current-input-method-title "]: ")
1961 ": ")
1963 (propertize (concat (upcase (substring m 0 1)) (substring m 1))
1964 'face 'minibuffer-prompt)))
1966 (defun isearch-message-suffix (&optional c-q-hack ellipsis)
1967 (concat (if c-q-hack "^Q" "")
1968 (if isearch-error
1969 (concat " [" isearch-error "]")
1970 "")))
1973 ;; Searching
1975 (defvar isearch-search-fun-function nil
1976 "Override `isearch-search-fun'.
1977 This function should return the search function for isearch to use.
1978 It will call this function with three arguments
1979 as if it were `search-forward'.")
1981 (defun isearch-search-fun ()
1982 "Return the function to use for the search.
1983 Can be changed via `isearch-search-fun-function' for special needs."
1984 (if isearch-search-fun-function
1985 (funcall isearch-search-fun-function)
1986 (cond
1987 (isearch-word
1988 (if isearch-forward 'word-search-forward 'word-search-backward))
1989 (isearch-regexp
1990 (if isearch-forward 're-search-forward 're-search-backward))
1992 (if isearch-forward 'search-forward 'search-backward)))))
1994 (defun isearch-search ()
1995 ;; Do the search with the current search string.
1996 (isearch-message nil t)
1997 (if (and (eq isearch-case-fold-search t) search-upper-case)
1998 (setq isearch-case-fold-search
1999 (isearch-no-upper-case-p isearch-string isearch-regexp)))
2000 (condition-case lossage
2001 (let ((inhibit-point-motion-hooks search-invisible)
2002 (inhibit-quit nil)
2003 (case-fold-search isearch-case-fold-search)
2004 (search-spaces-regexp search-whitespace-regexp)
2005 (retry t))
2006 (setq isearch-error nil)
2007 (while retry
2008 (setq isearch-success
2009 (funcall
2010 (isearch-search-fun)
2011 isearch-string nil t))
2012 ;; Clear RETRY unless we matched some invisible text
2013 ;; and we aren't supposed to do that.
2014 (if (or (eq search-invisible t)
2015 (not isearch-success)
2016 (bobp) (eobp)
2017 (= (match-beginning 0) (match-end 0))
2018 (not (isearch-range-invisible
2019 (match-beginning 0) (match-end 0))))
2020 (setq retry nil)))
2021 (setq isearch-just-started nil)
2022 (if isearch-success
2023 (setq isearch-other-end
2024 (if isearch-forward (match-beginning 0) (match-end 0)))))
2026 (quit (isearch-unread ?\C-g)
2027 (setq isearch-success nil))
2029 (invalid-regexp
2030 (setq isearch-error (car (cdr lossage)))
2031 (if (string-match
2032 "\\`Premature \\|\\`Unmatched \\|\\`Invalid "
2033 isearch-error)
2034 (setq isearch-error "incomplete input")))
2036 (search-failed
2037 (setq isearch-success nil)
2038 (setq isearch-error (nth 2 lossage)))
2040 (error
2041 ;; stack overflow in regexp search.
2042 (setq isearch-error (format "%s" lossage))))
2044 (if isearch-success
2046 ;; Ding if failed this time after succeeding last time.
2047 (and (isearch-success-state (car isearch-cmds))
2048 (ding))
2049 (if (functionp (isearch-pop-fun-state (car isearch-cmds)))
2050 (funcall (isearch-pop-fun-state (car isearch-cmds)) (car isearch-cmds)))
2051 (goto-char (isearch-point-state (car isearch-cmds)))))
2054 ;; Called when opening an overlay, and we are still in isearch.
2055 (defun isearch-open-overlay-temporary (ov)
2056 (if (not (null (overlay-get ov 'isearch-open-invisible-temporary)))
2057 ;; Some modes would want to open the overlays temporary during
2058 ;; isearch in their own way, they should set the
2059 ;; `isearch-open-invisible-temporary' to a function doing this.
2060 (funcall (overlay-get ov 'isearch-open-invisible-temporary) ov nil)
2061 ;; Store the values for the `invisible' and `intangible'
2062 ;; properties, and then set them to nil. This way the text hidden
2063 ;; by this overlay becomes visible.
2065 ;; Do we really need to set the `intangible' property to t? Can we
2066 ;; have the point inside an overlay with an `intangible' property?
2067 ;; In 19.34 this does not exist so I cannot test it.
2068 (overlay-put ov 'isearch-invisible (overlay-get ov 'invisible))
2069 (overlay-put ov 'isearch-intangible (overlay-get ov 'intangible))
2070 (overlay-put ov 'invisible nil)
2071 (overlay-put ov 'intangible nil)))
2074 ;; This is called at the end of isearch. It will open the overlays
2075 ;; that contain the latest match. Obviously in case of a C-g the
2076 ;; point returns to the original location which surely is not contain
2077 ;; in any of these overlays, se we are safe in this case too.
2078 (defun isearch-open-necessary-overlays (ov)
2079 (let ((inside-overlay (and (> (point) (overlay-start ov))
2080 (< (point) (overlay-end ov))))
2081 ;; If this exists it means that the overlay was opened using
2082 ;; this function, not by us tweaking the overlay properties.
2083 (fct-temp (overlay-get ov 'isearch-open-invisible-temporary)))
2084 (when (or inside-overlay (not fct-temp))
2085 ;; restore the values for the `invisible' and `intangible'
2086 ;; properties
2087 (overlay-put ov 'invisible (overlay-get ov 'isearch-invisible))
2088 (overlay-put ov 'intangible (overlay-get ov 'isearch-intangible))
2089 (overlay-put ov 'isearch-invisible nil)
2090 (overlay-put ov 'isearch-intangible nil))
2091 (if inside-overlay
2092 (funcall (overlay-get ov 'isearch-open-invisible) ov)
2093 (if fct-temp
2094 (funcall fct-temp ov t)))))
2096 ;; This is called when exiting isearch. It closes the temporary
2097 ;; opened overlays, except the ones that contain the latest match.
2098 (defun isearch-clean-overlays ()
2099 (when isearch-opened-overlays
2100 (mapc 'isearch-open-necessary-overlays isearch-opened-overlays)
2101 (setq isearch-opened-overlays nil)))
2104 (defun isearch-intersects-p (start0 end0 start1 end1)
2105 "Return t if regions START0..END0 and START1..END1 intersect."
2106 (or (and (>= start0 start1) (< start0 end1))
2107 (and (> end0 start1) (<= end0 end1))
2108 (and (>= start1 start0) (< start1 end0))
2109 (and (> end1 start0) (<= end1 end0))))
2112 ;; Verify if the current match is outside of each element of
2113 ;; `isearch-opened-overlays', if so close that overlay.
2115 (defun isearch-close-unnecessary-overlays (begin end)
2116 (let ((overlays isearch-opened-overlays))
2117 (setq isearch-opened-overlays nil)
2118 (dolist (ov overlays)
2119 (if (isearch-intersects-p begin end (overlay-start ov) (overlay-end ov))
2120 (push ov isearch-opened-overlays)
2121 (let ((fct-temp (overlay-get ov 'isearch-open-invisible-temporary)))
2122 (if fct-temp
2123 ;; If this exists it means that the overlay was opened
2124 ;; using this function, not by us tweaking the overlay
2125 ;; properties.
2126 (funcall fct-temp ov t)
2127 (overlay-put ov 'invisible (overlay-get ov 'isearch-invisible))
2128 (overlay-put ov 'intangible (overlay-get ov 'isearch-intangible))
2129 (overlay-put ov 'isearch-invisible nil)
2130 (overlay-put ov 'isearch-intangible nil)))))))
2133 (defun isearch-range-invisible (beg end)
2134 "Return t if all the text from BEG to END is invisible."
2135 (when (/= beg end)
2136 ;; Check that invisibility runs up to END.
2137 (save-excursion
2138 (goto-char beg)
2139 (let (;; can-be-opened keeps track if we can open some overlays.
2140 (can-be-opened (eq search-invisible 'open))
2141 ;; the list of overlays that could be opened
2142 (crt-overlays nil))
2143 (when (and can-be-opened isearch-hide-immediately)
2144 (isearch-close-unnecessary-overlays beg end))
2145 ;; If the following character is currently invisible,
2146 ;; skip all characters with that same `invisible' property value.
2147 ;; Do that over and over.
2148 (while (and (< (point) end)
2149 (let ((prop
2150 (get-char-property (point) 'invisible)))
2151 (if (eq buffer-invisibility-spec t)
2152 prop
2153 (or (memq prop buffer-invisibility-spec)
2154 (assq prop buffer-invisibility-spec)))))
2155 (if (get-text-property (point) 'invisible)
2156 (progn
2157 (goto-char (next-single-property-change (point) 'invisible
2158 nil end))
2159 ;; if text is hidden by an `invisible' text property
2160 ;; we cannot open it at all.
2161 (setq can-be-opened nil))
2162 (when can-be-opened
2163 (let ((overlays (overlays-at (point)))
2164 ov-list
2166 invis-prop)
2167 (while overlays
2168 (setq o (car overlays)
2169 invis-prop (overlay-get o 'invisible))
2170 (if (if (eq buffer-invisibility-spec t)
2171 invis-prop
2172 (or (memq invis-prop buffer-invisibility-spec)
2173 (assq invis-prop buffer-invisibility-spec)))
2174 (if (overlay-get o 'isearch-open-invisible)
2175 (setq ov-list (cons o ov-list))
2176 ;; We found one overlay that cannot be
2177 ;; opened, that means the whole chunk
2178 ;; cannot be opened.
2179 (setq can-be-opened nil)))
2180 (setq overlays (cdr overlays)))
2181 (if can-be-opened
2182 ;; It makes sense to append to the open
2183 ;; overlays list only if we know that this is
2184 ;; t.
2185 (setq crt-overlays (append ov-list crt-overlays)))))
2186 (goto-char (next-overlay-change (point)))))
2187 ;; See if invisibility reaches up thru END.
2188 (if (>= (point) end)
2189 (if (and can-be-opened (consp crt-overlays))
2190 (progn
2191 (setq isearch-opened-overlays
2192 (append isearch-opened-overlays crt-overlays))
2193 (mapc 'isearch-open-overlay-temporary crt-overlays)
2194 nil)
2195 (setq isearch-hidden t)))))))
2198 ;; General utilities
2200 (defun isearch-no-upper-case-p (string regexp-flag)
2201 "Return t if there are no upper case chars in STRING.
2202 If REGEXP-FLAG is non-nil, disregard letters preceded by `\\' (but not `\\\\')
2203 since they have special meaning in a regexp."
2204 (let (quote-flag (i 0) (len (length string)) found)
2205 (while (and (not found) (< i len))
2206 (let ((char (aref string i)))
2207 (if (and regexp-flag (eq char ?\\))
2208 (setq quote-flag (not quote-flag))
2209 (if (and (not quote-flag) (not (eq char (downcase char))))
2210 (setq found t))
2211 (setq quote-flag nil)))
2212 (setq i (1+ i)))
2213 (not found)))
2215 ;; Portability functions to support various Emacs versions.
2217 (defun isearch-text-char-description (c)
2218 (cond
2219 ((< c ?\s) (format "^%c" (+ c 64)))
2220 ((= c ?\^?) "^?")
2221 (t (char-to-string c))))
2223 ;; General function to unread characters or events.
2224 ;; Also insert them in a keyboard macro being defined.
2225 (defun isearch-unread (&rest char-or-events)
2226 (mapc 'store-kbd-macro-event char-or-events)
2227 (setq unread-command-events
2228 (append char-or-events unread-command-events)))
2231 ;; Highlighting
2233 (defvar isearch-overlay nil)
2235 (defun isearch-highlight (beg end)
2236 (unless (null search-highlight)
2237 (cond (isearch-overlay
2238 ;; Overlay already exists, just move it.
2239 (move-overlay isearch-overlay beg end (current-buffer)))
2242 ;; Overlay doesn't exist, create it.
2243 (setq isearch-overlay (make-overlay beg end))
2244 (overlay-put isearch-overlay 'face isearch)
2245 (overlay-put isearch-overlay 'priority 1) ;higher than lazy overlays
2246 ))))
2248 (defun isearch-dehighlight ()
2249 (when isearch-overlay
2250 (delete-overlay isearch-overlay)))
2252 ;; isearch-lazy-highlight feature
2253 ;; by Bob Glickstein <http://www.zanshin.com/~bobg/>
2255 ;; When active, *every* match for the current search string is
2256 ;; highlighted: the current one using the normal isearch match color
2257 ;; and all the others using `isearch-lazy-highlight'. The extra
2258 ;; highlighting makes it easier to anticipate where the cursor will
2259 ;; land each time you press C-s or C-r to repeat a pending search.
2260 ;; Highlighting of these additional matches happens in a deferred
2261 ;; fashion using "idle timers," so the cycles needed do not rob
2262 ;; isearch of its usual snappy response.
2264 ;; IMPLEMENTATION NOTE: This depends on some isearch internals.
2265 ;; Specifically:
2266 ;; - `isearch-update' is expected to be called (at least) every time
2267 ;; the search string or window-start changes;
2268 ;; - `isearch-string' is expected to contain the current search
2269 ;; string as entered by the user;
2270 ;; - the type of the current search is expected to be given by
2271 ;; `isearch-word' and `isearch-regexp';
2272 ;; - the direction of the current search is expected to be given by
2273 ;; `isearch-forward';
2274 ;; - the variable `isearch-error' is expected to be true
2275 ;; iff `isearch-string' is an invalid regexp.
2277 (defvar isearch-lazy-highlight-overlays nil)
2278 (defvar isearch-lazy-highlight-wrapped nil)
2279 (defvar isearch-lazy-highlight-start-limit nil)
2280 (defvar isearch-lazy-highlight-end-limit nil)
2281 (defvar isearch-lazy-highlight-start nil)
2282 (defvar isearch-lazy-highlight-end nil)
2283 (defvar isearch-lazy-highlight-timer nil)
2284 (defvar isearch-lazy-highlight-last-string nil)
2285 (defvar isearch-lazy-highlight-window nil)
2286 (defvar isearch-lazy-highlight-window-start nil)
2287 (defvar isearch-lazy-highlight-window-end nil)
2288 (defvar isearch-lazy-highlight-case-fold-search nil)
2289 (defvar isearch-lazy-highlight-regexp nil)
2291 (defun lazy-highlight-cleanup (&optional force)
2292 "Stop lazy highlighting and remove extra highlighting from current buffer.
2293 FORCE non-nil means do it whether or not `lazy-highlight-cleanup'
2294 is nil. This function is called when exiting an incremental search if
2295 `lazy-highlight-cleanup' is non-nil."
2296 (interactive '(t))
2297 (if (or force lazy-highlight-cleanup)
2298 (while isearch-lazy-highlight-overlays
2299 (delete-overlay (car isearch-lazy-highlight-overlays))
2300 (setq isearch-lazy-highlight-overlays
2301 (cdr isearch-lazy-highlight-overlays))))
2302 (when isearch-lazy-highlight-timer
2303 (cancel-timer isearch-lazy-highlight-timer)
2304 (setq isearch-lazy-highlight-timer nil)))
2306 (define-obsolete-function-alias 'isearch-lazy-highlight-cleanup
2307 'lazy-highlight-cleanup
2308 "22.1")
2310 (defun isearch-lazy-highlight-new-loop (&optional beg end)
2311 "Cleanup any previous `lazy-highlight' loop and begin a new one.
2312 BEG and END specify the bounds within which highlighting should occur.
2313 This is called when `isearch-update' is invoked (which can cause the
2314 search string to change or the window to scroll). It is also used
2315 by other Emacs features."
2316 (when (and (null executing-kbd-macro)
2317 (sit-for 0) ;make sure (window-start) is credible
2318 (or (not (equal isearch-string
2319 isearch-lazy-highlight-last-string))
2320 (not (eq (selected-window)
2321 isearch-lazy-highlight-window))
2322 (not (eq isearch-lazy-highlight-case-fold-search
2323 isearch-case-fold-search))
2324 (not (eq isearch-lazy-highlight-regexp
2325 isearch-regexp))
2326 (not (= (window-start)
2327 isearch-lazy-highlight-window-start))
2328 (not (= (window-end) ; Window may have been split/joined.
2329 isearch-lazy-highlight-window-end))))
2330 ;; something important did indeed change
2331 (lazy-highlight-cleanup t) ;kill old loop & remove overlays
2332 (when (not isearch-error)
2333 (setq isearch-lazy-highlight-start-limit beg
2334 isearch-lazy-highlight-end-limit end)
2335 (setq isearch-lazy-highlight-window (selected-window)
2336 isearch-lazy-highlight-window-start (window-start)
2337 isearch-lazy-highlight-window-end (window-end)
2338 isearch-lazy-highlight-start (point)
2339 isearch-lazy-highlight-end (point)
2340 isearch-lazy-highlight-last-string isearch-string
2341 isearch-lazy-highlight-case-fold-search isearch-case-fold-search
2342 isearch-lazy-highlight-regexp isearch-regexp
2343 isearch-lazy-highlight-wrapped nil)
2344 (unless (equal isearch-string "")
2345 (setq isearch-lazy-highlight-timer
2346 (run-with-idle-timer lazy-highlight-initial-delay nil
2347 'isearch-lazy-highlight-update))))))
2349 (defun isearch-lazy-highlight-search ()
2350 "Search ahead for the next or previous match, for lazy highlighting.
2351 Attempt to do the search exactly the way the pending isearch would."
2352 (let ((case-fold-search isearch-lazy-highlight-case-fold-search)
2353 (isearch-regexp isearch-lazy-highlight-regexp)
2354 (search-spaces-regexp search-whitespace-regexp))
2355 (condition-case nil
2356 (funcall (isearch-search-fun)
2357 isearch-lazy-highlight-last-string
2358 (if isearch-forward
2359 (min (or isearch-lazy-highlight-end-limit (point-max))
2360 (if isearch-lazy-highlight-wrapped
2361 isearch-lazy-highlight-start
2362 (window-end)))
2363 (max (or isearch-lazy-highlight-start-limit (point-min))
2364 (if isearch-lazy-highlight-wrapped
2365 isearch-lazy-highlight-end
2366 (window-start))))
2368 (error nil))))
2370 (defun isearch-lazy-highlight-update ()
2371 "Update highlighting of other matches for current search."
2372 (let ((max lazy-highlight-max-at-a-time)
2373 (looping t)
2374 nomore)
2375 (with-local-quit
2376 (save-selected-window
2377 (if (and (window-live-p isearch-lazy-highlight-window)
2378 (not (eq (selected-window) isearch-lazy-highlight-window)))
2379 (select-window isearch-lazy-highlight-window))
2380 (save-excursion
2381 (save-match-data
2382 (goto-char (if isearch-forward
2383 isearch-lazy-highlight-end
2384 isearch-lazy-highlight-start))
2385 (while looping
2386 (let ((found (isearch-lazy-highlight-search)))
2387 (when max
2388 (setq max (1- max))
2389 (if (<= max 0)
2390 (setq looping nil)))
2391 (if found
2392 (let ((mb (match-beginning 0))
2393 (me (match-end 0)))
2394 (if (= mb me) ;zero-length match
2395 (if isearch-forward
2396 (if (= mb (if isearch-lazy-highlight-wrapped
2397 isearch-lazy-highlight-start
2398 (window-end)))
2399 (setq found nil)
2400 (forward-char 1))
2401 (if (= mb (if isearch-lazy-highlight-wrapped
2402 isearch-lazy-highlight-end
2403 (window-start)))
2404 (setq found nil)
2405 (forward-char -1)))
2407 ;; non-zero-length match
2408 (let ((ov (make-overlay mb me)))
2409 (push ov isearch-lazy-highlight-overlays)
2410 (overlay-put ov 'face lazy-highlight-face)
2411 (overlay-put ov 'priority 0) ;lower than main overlay
2412 (overlay-put ov 'window (selected-window))))
2413 (if isearch-forward
2414 (setq isearch-lazy-highlight-end (point))
2415 (setq isearch-lazy-highlight-start (point)))))
2417 ;; not found or zero-length match at the search bound
2418 (if (not found)
2419 (if isearch-lazy-highlight-wrapped
2420 (setq looping nil
2421 nomore t)
2422 (setq isearch-lazy-highlight-wrapped t)
2423 (if isearch-forward
2424 (progn
2425 (setq isearch-lazy-highlight-end (window-start))
2426 (goto-char (max (or isearch-lazy-highlight-start-limit (point-min))
2427 (window-start))))
2428 (setq isearch-lazy-highlight-start (window-end))
2429 (goto-char (min (or isearch-lazy-highlight-end-limit (point-max))
2430 (window-end))))))))
2431 (unless nomore
2432 (setq isearch-lazy-highlight-timer
2433 (run-at-time lazy-highlight-interval nil
2434 'isearch-lazy-highlight-update)))))))))
2436 (defun isearch-resume (search regexp word forward message case-fold)
2437 "Resume an incremental search.
2438 SEARCH is the string or regexp searched for.
2439 REGEXP non-nil means the resumed search was a regexp search.
2440 WORD non-nil means resume a word search.
2441 FORWARD non-nil means resume a forward search.
2442 MESSAGE is the echo-area message recorded for the search resumed.
2443 CASE-FOLD non-nil means the search was case-insensitive."
2444 (isearch-mode forward regexp nil nil word)
2445 (setq isearch-string search
2446 isearch-message message
2447 isearch-case-fold-search case-fold)
2448 (isearch-search))
2450 ;; arch-tag: 74850515-f7d8-43a6-8a2c-ca90a4c1e675
2451 ;;; isearch.el ends here