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76550a57 | 1 | ;;; isearch.el --- incremental search minor mode. |
3b1e4dd1 | 2 | |
f8c25f1b | 3 | ;; Copyright (C) 1992, 1993, 1994, 1995 Free Software Foundation, Inc. |
3a801d0c | 4 | |
3b1e4dd1 | 5 | ;; Author: Daniel LaLiberte <liberte@cs.uiuc.edu> |
0f09b616 | 6 | ;; Maintainer: FSF |
8e1cae6d | 7 | |
54d2ecd3 | 8 | ;; This file is part of GNU Emacs. |
8e1cae6d | 9 | |
59243403 RS |
10 | ;; GNU Emacs is free software; you can redistribute it and/or modify |
11 | ;; it under the terms of the GNU General Public License as published by | |
12 | ;; the Free Software Foundation; either version 2, or (at your option) | |
13 | ;; any later version. | |
14 | ||
8e1cae6d | 15 | ;; GNU Emacs is distributed in the hope that it will be useful, |
59243403 RS |
16 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of |
17 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | ;; GNU General Public License for more details. | |
19 | ||
20 | ;; You should have received a copy of the GNU General Public License | |
b578f267 EN |
21 | ;; along with GNU Emacs; see the file COPYING. If not, write to the |
22 | ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
23 | ;; Boston, MA 02111-1307, USA. | |
8e1cae6d | 24 | |
3b1e4dd1 ER |
25 | ;;; Commentary: |
26 | ||
8e1cae6d JB |
27 | ;; Instructions |
28 | ||
08200510 RS |
29 | ;; For programmed use of isearch-mode, e.g. calling (isearch-forward), |
30 | ;; isearch-mode behaves modally and does not return until the search | |
31 | ;; is completed. It uses a recursive-edit to behave this way. Note: | |
32 | ;; gnus does it wrong: (call-interactively 'isearch-forward). | |
33 | ||
8e1cae6d | 34 | ;; The key bindings active within isearch-mode are defined below in |
08200510 RS |
35 | ;; `isearch-mode-map' which is given bindings close to the default |
36 | ;; characters of the original isearch.el. With `isearch-mode', | |
37 | ;; however, you can bind multi-character keys and it should be easier | |
38 | ;; to add new commands. One bug though: keys with meta-prefix cannot | |
39 | ;; be longer than two chars. Also see minibuffer-local-isearch-map | |
40 | ;; for bindings active during `isearch-edit-string'. | |
41 | ||
42 | ;; Note to emacs version 19 users: isearch-mode should work even if | |
43 | ;; you switch windows with the mouse, in which case isearch-mode is | |
44 | ;; terminated automatically before the switch. This is true of lemacs | |
45 | ;; too, with a few more cleanups I've neglected in this release. | |
46 | ;; No one has supplied patches for epoch yet. | |
47 | ||
48 | ;; The search ring and completion commands automatically put you in | |
49 | ;; the minibuffer to edit the string. This gives you a chance to | |
50 | ;; modify the search string before executing the search. There are | |
51 | ;; three commands to terminate the editing: C-s and C-r exit the | |
52 | ;; minibuffer and search forward and reverse respectively, while C-m | |
53 | ;; exits and does a nonincremental search. | |
54 | ||
55 | ;; Exiting immediately from isearch uses isearch-edit-string instead | |
56 | ;; of nonincremental-search, if search-nonincremental-instead is non-nil. | |
57 | ;; The name of this option should probably be changed if we decide to | |
58 | ;; keep the behavior. No point in forcing nonincremental search until | |
59 | ;; the last possible moment. | |
60 | ||
61 | ;; TODO | |
eb8c3be9 | 62 | ;; - Integrate the emacs 19 generalized command history. |
08200510 RS |
63 | ;; - Think about incorporating query-replace. |
64 | ;; - Hooks and options for failed search. | |
282d89c0 | 65 | |
3b1e4dd1 ER |
66 | ;;; Change Log: |
67 | ||
b578f267 EN |
68 | ;; Changes before those recorded in ChangeLog: |
69 | ||
70 | ;; Revision 1.4 92/09/14 16:26:02 liberte | |
71 | ;; Added prefix args to isearch-forward, etc. to switch between | |
72 | ;; string and regular expression searching. | |
73 | ;; Added some support for lemacs. | |
74 | ;; Added general isearch-highlight option - but only for lemacs so far. | |
75 | ;; Added support for frame switching in emacs 19. | |
76 | ;; Added word search option to isearch-edit-string. | |
77 | ;; Renamed isearch-quit to isearch-abort. | |
78 | ;; Numerous changes to comments and doc strings. | |
79 | ;; | |
80 | ;; Revision 1.3 92/06/29 13:10:08 liberte | |
81 | ;; Moved modal isearch-mode handling into isearch-mode. | |
82 | ;; Got rid of buffer-local isearch variables. | |
83 | ;; isearch-edit-string used by ring adjustments, completion, and | |
84 | ;; nonincremental searching. C-s and C-r are additional exit commands. | |
85 | ;; Renamed all regex to regexp. | |
86 | ;; Got rid of found-start and found-point globals. | |
87 | ;; Generalized handling of upper-case chars. | |
88 | ||
89 | ;; Revision 1.2 92/05/27 11:33:57 liberte | |
90 | ;; Emacs version 19 has a search ring, which is supported here. | |
91 | ;; Other fixes found in the version 19 isearch are included here. | |
92 | ;; | |
93 | ;; Also see variables search-caps-disable-folding, | |
94 | ;; search-nonincremental-instead, search-whitespace-regexp, and | |
95 | ;; commands isearch-toggle-regexp, isearch-edit-string. | |
96 | ;; | |
97 | ;; semi-modal isearching is supported. | |
98 | ||
99 | ;; Changes for 1.1 | |
100 | ;; 3/18/92 Fixed invalid-regexp. | |
101 | ;; 3/18/92 Fixed yanking in regexps. | |
282d89c0 | 102 | |
3b1e4dd1 | 103 | ;;; Code: |
08200510 RS |
104 | |
105 | \f | |
58451992 | 106 | ;;; Some additional options and constants. |
08200510 | 107 | |
d7fa5aa2 | 108 | (defvar search-exit-option t |
a8f783b2 | 109 | "*Non-nil means random control characters terminate incremental search.") |
fdf5afa4 RS |
110 | |
111 | (defvar search-slow-window-lines 1 | |
112 | "*Number of lines in slow search display windows. | |
113 | These are the short windows used during incremental search on slow terminals. | |
114 | Negative means put the slow search window at the top (normally it's at bottom) | |
115 | and the value is minus the number of lines.") | |
116 | ||
117 | (defvar search-slow-speed 1200 | |
118 | "*Highest terminal speed at which to use \"slow\" style incremental search. | |
119 | This is the style where a one-line window is created to show the line | |
120 | that the search has reached.") | |
8e1cae6d | 121 | |
b78559b0 | 122 | (defvar search-upper-case 'not-yanks |
8e1cae6d | 123 | "*If non-nil, upper case chars disable case fold searching. |
08200510 RS |
124 | That is, upper and lower case chars must match exactly. |
125 | This applies no matter where the chars come from, but does not | |
fdf5afa4 RS |
126 | apply to chars in regexps that are prefixed with `\\'. |
127 | If this value is `not-yanks', yanked text is always downcased.") | |
8e1cae6d JB |
128 | |
129 | (defvar search-nonincremental-instead t | |
130 | "*If non-nil, do a nonincremental search instead if exiting immediately. | |
08200510 RS |
131 | Actually, `isearch-edit-string' is called to let you enter the search |
132 | string, and RET terminates editing and does a nonincremental search.") | |
8e1cae6d | 133 | |
d7fa5aa2 | 134 | (defvar search-whitespace-regexp "\\s-+" |
8e1cae6d JB |
135 | "*If non-nil, regular expression to match a sequence of whitespace chars. |
136 | You might want to use something like \"[ \\t\\r\\n]+\" instead.") | |
137 | ||
08200510 | 138 | (defvar search-highlight nil |
b78559b0 | 139 | "*Non-nil means incremental search highlights the current match.") |
08200510 | 140 | |
86bfaffe RS |
141 | (defvar search-invisible nil |
142 | "*Non-nil means incremental search can match text hidden by an overlay. | |
143 | \(This applies when using `noutline.el'.)") | |
144 | ||
08200510 RS |
145 | (defvar isearch-mode-hook nil |
146 | "Function(s) to call after starting up an incremental search.") | |
147 | ||
148 | (defvar isearch-mode-end-hook nil | |
149 | "Function(s) to call after terminating an incremental search.") | |
150 | ||
8e1cae6d | 151 | ;;; Search ring. |
8e1cae6d JB |
152 | |
153 | (defvar search-ring nil | |
154 | "List of search string sequences.") | |
08200510 | 155 | (defvar regexp-search-ring nil |
8e1cae6d JB |
156 | "List of regular expression search string sequences.") |
157 | ||
d7fa5aa2 | 158 | (defvar search-ring-max 16 |
8e1cae6d | 159 | "*Maximum length of search ring before oldest elements are thrown away.") |
d7fa5aa2 | 160 | (defvar regexp-search-ring-max 16 |
08200510 | 161 | "*Maximum length of regexp search ring before oldest elements are thrown away.") |
8e1cae6d JB |
162 | |
163 | (defvar search-ring-yank-pointer nil | |
a5dcf63f RS |
164 | "Index in `search-ring' of last string reused. |
165 | nil if none yet.") | |
08200510 | 166 | (defvar regexp-search-ring-yank-pointer nil |
a5dcf63f RS |
167 | "Index in `regexp-search-ring' of last string reused. |
168 | nil if none yet.") | |
8e1cae6d | 169 | |
08200510 RS |
170 | (defvar search-ring-update nil |
171 | "*Non-nil if advancing or retreating in the search ring should cause search. | |
172 | Default value, nil, means edit the string instead.") | |
173 | ||
8e1cae6d JB |
174 | ;;; Define isearch-mode keymap. |
175 | ||
176 | (defvar isearch-mode-map nil | |
177 | "Keymap for isearch-mode.") | |
178 | ||
08200510 RS |
179 | (or isearch-mode-map |
180 | (let* ((i 0) | |
fdf5afa4 | 181 | (map (make-keymap))) |
fcf8ba15 RS |
182 | (or (vectorp (nth 1 map)) |
183 | (error "The initialization of isearch-mode-map must be updated")) | |
184 | ;; Give this map a vector 256 long, for dense binding | |
185 | ;; of a larger range of ordinary characters. | |
186 | (setcar (cdr map) (make-vector 256 nil)) | |
08200510 | 187 | |
ac689515 RS |
188 | ;; Make function keys, etc, exit the search. |
189 | (define-key map [t] 'isearch-other-control-char) | |
08200510 | 190 | ;; Control chars, by default, end isearch mode transparently. |
ac689515 RS |
191 | ;; We need these explicit definitions because, in a dense keymap, |
192 | ;; the binding for t does not affect characters. | |
193 | ;; We use a dense keymap to save space. | |
08200510 RS |
194 | (while (< i ?\ ) |
195 | (define-key map (make-string 1 i) 'isearch-other-control-char) | |
196 | (setq i (1+ i))) | |
197 | ||
8cb2ceaa | 198 | ;; Printing chars extend the search string by default. |
ac689515 | 199 | (setq i ?\ ) |
8d7e4e80 | 200 | (while (< i (length (nth 1 map))) |
8cb2ceaa | 201 | (define-key map (vector i) 'isearch-printing-char) |
08200510 RS |
202 | (setq i (1+ i))) |
203 | ||
ec121bad RS |
204 | ;; To handle local bindings with meta char prefix keys, define |
205 | ;; another full keymap. This must be done for any other prefix | |
206 | ;; keys as well, one full keymap per char of the prefix key. It | |
207 | ;; would be simpler to disable the global keymap, and/or have a | |
208 | ;; default local key binding for any key not otherwise bound. | |
209 | (let ((meta-map (make-sparse-keymap))) | |
210 | (define-key map (char-to-string meta-prefix-char) meta-map) | |
211 | (define-key map [escape] meta-map)) | |
212 | (define-key map (vector meta-prefix-char t) 'isearch-other-meta-char) | |
213 | ||
08200510 RS |
214 | ;; Several non-printing chars change the searching behavior. |
215 | (define-key map "\C-s" 'isearch-repeat-forward) | |
216 | (define-key map "\C-r" 'isearch-repeat-backward) | |
217 | (define-key map "\177" 'isearch-delete-char) | |
218 | (define-key map "\C-g" 'isearch-abort) | |
ec121bad RS |
219 | ;; This assumes \e is the meta-prefix-char. |
220 | (or (= ?\e meta-prefix-char) | |
221 | (error "Inconsistency in isearch.el")) | |
19993c54 RS |
222 | (define-key map "\e\e\e" 'isearch-cancel) |
223 | (define-key map [escape escape escape] 'isearch-cancel) | |
8e1cae6d | 224 | |
08200510 RS |
225 | (define-key map "\C-q" 'isearch-quote-char) |
226 | ||
08200510 RS |
227 | (define-key map "\r" 'isearch-exit) |
228 | (define-key map "\C-j" 'isearch-printing-char) | |
229 | (define-key map "\t" 'isearch-printing-char) | |
230 | (define-key map " " 'isearch-whitespace-chars) | |
8e1cae6d | 231 | |
08200510 RS |
232 | (define-key map "\C-w" 'isearch-yank-word) |
233 | (define-key map "\C-y" 'isearch-yank-line) | |
234 | ||
235 | ;; Define keys for regexp chars * ? |. | |
236 | ;; Nothing special for + because it matches at least once. | |
237 | (define-key map "*" 'isearch-*-char) | |
238 | (define-key map "?" 'isearch-*-char) | |
239 | (define-key map "|" 'isearch-|-char) | |
240 | ||
58f1634a RS |
241 | ;;; Turned off because I find I expect to get the global definition--rms. |
242 | ;;; ;; Instead bind C-h to special help command for isearch-mode. | |
243 | ;;; (define-key map "\C-h" 'isearch-mode-help) | |
08200510 | 244 | |
08200510 RS |
245 | (define-key map "\M-n" 'isearch-ring-advance) |
246 | (define-key map "\M-p" 'isearch-ring-retreat) | |
30d47262 | 247 | (define-key map "\M-y" 'isearch-yank-kill) |
1a3a6707 | 248 | |
08200510 RS |
249 | (define-key map "\M-\t" 'isearch-complete) |
250 | ||
5f48fc17 KH |
251 | ;; Pass frame events transparently so they won't exit the search. |
252 | ;; In particular, if we have more than one display open, then a | |
253 | ;; switch-frame might be generated by someone typing at another keyboard. | |
254 | (define-key map [switch-frame] nil) | |
255 | (define-key map [delete-frame] nil) | |
256 | (define-key map [iconify-frame] nil) | |
257 | (define-key map [make-frame-visible] nil) | |
f46d5091 KH |
258 | ;; For searching multilingual text. |
259 | (define-key map "\C-\\" 'isearch-toggle-input-method) | |
260 | (define-key map "\C-^" 'isearch-toggle-specified-input-method) | |
5f48fc17 | 261 | |
08200510 RS |
262 | (setq isearch-mode-map map) |
263 | )) | |
8e1cae6d | 264 | |
08200510 RS |
265 | ;; Some bindings you may want to put in your isearch-mode-hook. |
266 | ;; Suggest some alternates... | |
4453091d | 267 | ;; (define-key isearch-mode-map "\C-t" 'isearch-toggle-case-fold) |
08200510 RS |
268 | ;; (define-key isearch-mode-map "\C-t" 'isearch-toggle-regexp) |
269 | ;; (define-key isearch-mode-map "\C-^" 'isearch-edit-string) | |
8e1cae6d | 270 | |
8e1cae6d | 271 | |
08200510 RS |
272 | (defvar minibuffer-local-isearch-map nil |
273 | "Keymap for editing isearch strings in the minibuffer.") | |
8e1cae6d | 274 | |
08200510 RS |
275 | (or minibuffer-local-isearch-map |
276 | (let ((map (copy-keymap minibuffer-local-map))) | |
277 | (define-key map "\r" 'isearch-nonincremental-exit-minibuffer) | |
35a4d143 RS |
278 | (define-key map "\M-n" 'isearch-ring-advance-edit) |
279 | (define-key map "\M-p" 'isearch-ring-retreat-edit) | |
08200510 RS |
280 | (define-key map "\M-\t" 'isearch-complete-edit) |
281 | (define-key map "\C-s" 'isearch-forward-exit-minibuffer) | |
282 | (define-key map "\C-r" 'isearch-reverse-exit-minibuffer) | |
283 | (setq minibuffer-local-isearch-map map) | |
284 | )) | |
8e1cae6d | 285 | |
8e1cae6d | 286 | ;; Internal variables declared globally for byte-compiler. |
08200510 RS |
287 | ;; These are all set with setq while isearching |
288 | ;; and bound locally while editing the search string. | |
289 | ||
290 | (defvar isearch-forward nil) ; Searching in the forward direction. | |
291 | (defvar isearch-regexp nil) ; Searching for a regexp. | |
292 | (defvar isearch-word nil) ; Searching for words. | |
293 | ||
294 | (defvar isearch-cmds nil) ; Stack of search status sets. | |
295 | (defvar isearch-string "") ; The current search string. | |
296 | (defvar isearch-message "") ; text-char-description version of isearch-string | |
297 | ||
298 | (defvar isearch-success t) ; Searching is currently successful. | |
299 | (defvar isearch-invalid-regexp nil) ; Regexp not well formed. | |
c5f6b356 | 300 | (defvar isearch-within-brackets nil) ; Regexp has unclosed [. |
08200510 RS |
301 | (defvar isearch-other-end nil) ; Start (end) of match if forward (backward). |
302 | (defvar isearch-wrapped nil) ; Searching restarted from the top (bottom). | |
8e1cae6d | 303 | (defvar isearch-barrier 0) |
99ae9e9f | 304 | (defvar isearch-just-started nil) |
8e1cae6d | 305 | |
4453091d RS |
306 | ; case-fold-search while searching. |
307 | ; either nil, t, or 'yes. 'yes means the same as t except that mixed | |
308 | ; case in the search string is ignored. | |
309 | (defvar isearch-case-fold-search nil) | |
8e1cae6d JB |
310 | |
311 | (defvar isearch-adjusted nil) | |
312 | (defvar isearch-slow-terminal-mode nil) | |
08200510 RS |
313 | ;;; If t, using a small window. |
314 | (defvar isearch-small-window nil) | |
8e1cae6d | 315 | (defvar isearch-opoint 0) |
08200510 RS |
316 | ;;; The window configuration active at the beginning of the search. |
317 | (defvar isearch-window-configuration nil) | |
8e1cae6d | 318 | |
08200510 RS |
319 | ;; Flag to indicate a yank occurred, so don't move the cursor. |
320 | (defvar isearch-yank-flag nil) | |
8e1cae6d | 321 | |
f46d5091 KH |
322 | ;; Flag to indicate that we are searching multibyte characaters. |
323 | (defvar isearch-multibyte-characters-flag nil) | |
324 | ||
08200510 RS |
325 | ;;; A function to be called after each input character is processed. |
326 | ;;; (It is not called after characters that exit the search.) | |
327 | ;;; It is only set from an optional argument to `isearch-mode'. | |
328 | (defvar isearch-op-fun nil) | |
8e1cae6d | 329 | |
08200510 RS |
330 | ;;; Is isearch-mode in a recursive edit for modal searching. |
331 | (defvar isearch-recursive-edit nil) | |
8e1cae6d | 332 | |
08200510 RS |
333 | ;;; Should isearch be terminated after doing one search? |
334 | (defvar isearch-nonincremental nil) | |
335 | ||
336 | ;; New value of isearch-forward after isearch-edit-string. | |
337 | (defvar isearch-new-forward nil) | |
8e1cae6d | 338 | |
8e1cae6d | 339 | |
8e1cae6d JB |
340 | ;; Minor-mode-alist changes - kind of redundant with the |
341 | ;; echo area, but if isearching in multiple windows, it can be useful. | |
342 | ||
343 | (or (assq 'isearch-mode minor-mode-alist) | |
344 | (nconc minor-mode-alist | |
345 | (list '(isearch-mode isearch-mode)))) | |
346 | ||
08200510 | 347 | (defvar isearch-mode nil) ;; Name of the minor mode, if non-nil. |
8e1cae6d JB |
348 | (make-variable-buffer-local 'isearch-mode) |
349 | ||
fdf5afa4 RS |
350 | (define-key global-map "\C-s" 'isearch-forward) |
351 | (define-key esc-map "\C-s" 'isearch-forward-regexp) | |
352 | (define-key global-map "\C-r" 'isearch-backward) | |
353 | (define-key esc-map "\C-r" 'isearch-backward-regexp) | |
354 | ||
8e1cae6d | 355 | ;;; Entry points to isearch-mode. |
08200510 | 356 | ;;; These four functions should replace those in loaddefs.el |
b457cc3b | 357 | ;;; An alternative is to defalias isearch-forward etc to isearch-mode, |
08200510 | 358 | ;;; and look at this-command to set the options accordingly. |
8e1cae6d | 359 | |
eceee2c0 | 360 | (defun isearch-forward (&optional regexp-p no-recursive-edit) |
8e1cae6d JB |
361 | "\ |
362 | Do incremental search forward. | |
08200510 RS |
363 | With a prefix argument, do an incremental regular expression search instead. |
364 | \\<isearch-mode-map> | |
8e1cae6d | 365 | As you type characters, they add to the search string and are found. |
08200510 | 366 | The following non-printing keys are bound in `isearch-mode-map'. |
8e1cae6d | 367 | |
08200510 | 368 | Type \\[isearch-delete-char] to cancel characters from end of search string. |
8e1cae6d | 369 | Type \\[isearch-exit] to exit, leaving point at location found. |
08200510 RS |
370 | Type LFD (C-j) to match end of line. |
371 | Type \\[isearch-repeat-forward] to search again forward,\ | |
372 | \\[isearch-repeat-backward] to search again backward. | |
373 | Type \\[isearch-yank-word] to yank word from buffer onto end of search\ | |
374 | string and search for it. | |
375 | Type \\[isearch-yank-line] to yank rest of line onto end of search string\ | |
376 | and search for it. | |
de40ed89 | 377 | Type \\[isearch-yank-kill] to yank the last string of killed text. |
8e1cae6d | 378 | Type \\[isearch-quote-char] to quote control character to search for it. |
08200510 RS |
379 | \\[isearch-abort] while searching or when search has failed cancels input\ |
380 | back to what has | |
381 | been found successfully. | |
382 | \\[isearch-abort] when search is successful aborts and moves point to\ | |
383 | starting point. | |
8e1cae6d JB |
384 | |
385 | Also supported is a search ring of the previous 16 search strings. | |
386 | Type \\[isearch-ring-advance] to search for the next item in the search ring. | |
08200510 RS |
387 | Type \\[isearch-ring-retreat] to search for the previous item in the search\ |
388 | ring. | |
389 | Type \\[isearch-complete] to complete the search string using the search ring. | |
8e1cae6d | 390 | |
08200510 RS |
391 | The above keys, bound in `isearch-mode-map', are often controlled by |
392 | options; do M-x apropos on search-.* to find them. | |
8e1cae6d | 393 | Other control and meta characters terminate the search |
08200510 | 394 | and are then executed normally (depending on `search-exit-option'). |
fd49e05c | 395 | Likewise for function keys and mouse button events. |
8e1cae6d | 396 | |
08200510 RS |
397 | If this function is called non-interactively, it does not return to |
398 | the calling function until the search is done." | |
8e1cae6d | 399 | |
eceee2c0 | 400 | (interactive "P\np") |
4ae7d00a | 401 | (isearch-mode t (not (null regexp-p)) nil (not no-recursive-edit))) |
8e1cae6d | 402 | |
eceee2c0 | 403 | (defun isearch-forward-regexp (&optional not-regexp no-recursive-edit) |
8e1cae6d JB |
404 | "\ |
405 | Do incremental search forward for regular expression. | |
08200510 | 406 | With a prefix argument, do a regular string search instead. |
8e1cae6d JB |
407 | Like ordinary incremental search except that your input |
408 | is treated as a regexp. See \\[isearch-forward] for more info." | |
eceee2c0 | 409 | (interactive "P\np") |
4ae7d00a | 410 | (isearch-mode t (null not-regexp) nil (not no-recursive-edit))) |
8e1cae6d | 411 | |
eceee2c0 | 412 | (defun isearch-backward (&optional regexp-p no-recursive-edit) |
8e1cae6d JB |
413 | "\ |
414 | Do incremental search backward. | |
08200510 | 415 | With a prefix argument, do a regular expression search instead. |
8e1cae6d | 416 | See \\[isearch-forward] for more information." |
eceee2c0 | 417 | (interactive "P\np") |
4ae7d00a | 418 | (isearch-mode nil (not (null regexp-p)) nil (not no-recursive-edit))) |
8e1cae6d | 419 | |
eceee2c0 | 420 | (defun isearch-backward-regexp (&optional not-regexp no-recursive-edit) |
8e1cae6d JB |
421 | "\ |
422 | Do incremental search backward for regular expression. | |
08200510 | 423 | With a prefix argument, do a regular string search instead. |
8e1cae6d JB |
424 | Like ordinary incremental search except that your input |
425 | is treated as a regexp. See \\[isearch-forward] for more info." | |
eceee2c0 | 426 | (interactive "P\np") |
4ae7d00a | 427 | (isearch-mode nil (null not-regexp) nil (not no-recursive-edit))) |
08200510 RS |
428 | |
429 | ||
430 | (defun isearch-mode-help () | |
431 | (interactive) | |
432 | (describe-function 'isearch-forward) | |
433 | (isearch-update)) | |
8e1cae6d JB |
434 | |
435 | \f | |
8e1cae6d JB |
436 | ;; isearch-mode only sets up incremental search for the minor mode. |
437 | ;; All the work is done by the isearch-mode commands. | |
438 | ||
08200510 | 439 | ;; Not used yet: |
d7fa5aa2 | 440 | ;;(defvar isearch-commands '(isearch-forward isearch-backward |
08200510 RS |
441 | ;; isearch-forward-regexp isearch-backward-regexp) |
442 | ;; "List of commands for which isearch-mode does not recursive-edit.") | |
443 | ||
444 | ||
445 | (defun isearch-mode (forward &optional regexp op-fun recursive-edit word-p) | |
79ce455d RS |
446 | "Start isearch minor mode. Called by `isearch-forward', etc. |
447 | ||
448 | \\{isearch-mode-map}" | |
8e1cae6d JB |
449 | |
450 | ;; Initialize global vars. | |
451 | (setq isearch-forward forward | |
452 | isearch-regexp regexp | |
08200510 | 453 | isearch-word word-p |
8e1cae6d JB |
454 | isearch-op-fun op-fun |
455 | isearch-case-fold-search case-fold-search | |
456 | isearch-string "" | |
457 | isearch-message "" | |
458 | isearch-cmds nil | |
459 | isearch-success t | |
460 | isearch-wrapped nil | |
461 | isearch-barrier (point) | |
462 | isearch-adjusted nil | |
463 | isearch-yank-flag nil | |
464 | isearch-invalid-regexp nil | |
c5f6b356 | 465 | isearch-within-brackets nil |
0cabad13 | 466 | isearch-slow-terminal-mode (and (<= baud-rate search-slow-speed) |
8e1cae6d JB |
467 | (> (window-height) |
468 | (* 4 search-slow-window-lines))) | |
469 | isearch-other-end nil | |
470 | isearch-small-window nil | |
99ae9e9f | 471 | isearch-just-started t |
f46d5091 | 472 | isearch-multibyte-characters-flag nil |
8e1cae6d | 473 | |
8e1cae6d | 474 | isearch-opoint (point) |
a5dcf63f RS |
475 | search-ring-yank-pointer nil |
476 | regexp-search-ring-yank-pointer nil) | |
99ae9e9f | 477 | (looking-at "") |
292a8dff RS |
478 | (setq isearch-window-configuration |
479 | (if isearch-slow-terminal-mode (current-window-configuration) nil)) | |
70418205 | 480 | |
18ce7555 RS |
481 | ;; Maybe make minibuffer frame visible and/or raise it. |
482 | (let ((frame (window-frame (minibuffer-window)))) | |
483 | (if (not (memq (frame-live-p frame) '(nil t))) | |
484 | (progn | |
485 | (make-frame-visible frame) | |
486 | (if minibuffer-auto-raise | |
487 | (raise-frame frame))))) | |
488 | ||
8e1cae6d | 489 | (setq isearch-mode " Isearch") ;; forward? regexp? |
1cd3732c | 490 | (force-mode-line-update) |
8e1cae6d JB |
491 | |
492 | (isearch-push-state) | |
493 | ||
c7955222 | 494 | (setq overriding-terminal-local-map isearch-mode-map) |
8e1cae6d JB |
495 | (isearch-update) |
496 | (run-hooks 'isearch-mode-hook) | |
08200510 | 497 | |
bfe2d334 | 498 | (add-hook 'mouse-leave-buffer-hook 'isearch-done) |
6e5cd0ae | 499 | |
08200510 RS |
500 | ;; isearch-mode can be made modal (in the sense of not returning to |
501 | ;; the calling function until searching is completed) by entering | |
502 | ;; a recursive-edit and exiting it when done isearching. | |
130bf67c RS |
503 | (if recursive-edit |
504 | (let ((isearch-recursive-edit t)) | |
505 | (recursive-edit))) | |
0daa17f3 | 506 | isearch-success) |
8e1cae6d JB |
507 | |
508 | ||
8e1cae6d JB |
509 | ;; Some high level utilities. Others below. |
510 | ||
511 | (defun isearch-update () | |
512 | ;; Called after each command to update the display. | |
58451992 | 513 | (if (null unread-command-events) |
8e1cae6d JB |
514 | (progn |
515 | (if (not (input-pending-p)) | |
516 | (isearch-message)) | |
517 | (if (and isearch-slow-terminal-mode | |
518 | (not (or isearch-small-window | |
519 | (pos-visible-in-window-p)))) | |
08200510 | 520 | (let ((found-point (point))) |
8e1cae6d | 521 | (setq isearch-small-window t) |
8e1cae6d JB |
522 | (move-to-window-line 0) |
523 | (let ((window-min-height 1)) | |
524 | (split-window nil (if (< search-slow-window-lines 0) | |
525 | (1+ (- search-slow-window-lines)) | |
526 | (- (window-height) | |
527 | (1+ search-slow-window-lines))))) | |
528 | (if (< search-slow-window-lines 0) | |
529 | (progn (vertical-motion (- 1 search-slow-window-lines)) | |
530 | (set-window-start (next-window) (point)) | |
531 | (set-window-hscroll (next-window) | |
532 | (window-hscroll)) | |
533 | (set-window-hscroll (selected-window) 0)) | |
534 | (other-window 1)) | |
08200510 RS |
535 | (goto-char found-point))) |
536 | (if isearch-other-end | |
537 | (if (< isearch-other-end (point)) ; isearch-forward? | |
538 | (isearch-highlight isearch-other-end (point)) | |
99afb671 RS |
539 | (isearch-highlight (point) isearch-other-end)) |
540 | (isearch-dehighlight nil)) | |
08200510 | 541 | )) |
8e1cae6d JB |
542 | (setq ;; quit-flag nil not for isearch-mode |
543 | isearch-adjusted nil | |
544 | isearch-yank-flag nil) | |
545 | ) | |
546 | ||
0daa17f3 | 547 | (defun isearch-done (&optional nopush edit) |
bfe2d334 | 548 | (remove-hook 'mouse-leave-buffer-hook 'isearch-done) |
8e1cae6d | 549 | ;; Called by all commands that terminate isearch-mode. |
35a4d143 | 550 | ;; If NOPUSH is non-nil, we don't push the string on the search ring. |
c7955222 | 551 | (setq overriding-terminal-local-map nil) |
08200510 RS |
552 | ;; (setq pre-command-hook isearch-old-pre-command-hook) ; for lemacs |
553 | (isearch-dehighlight t) | |
554 | (let ((found-start (window-start (selected-window))) | |
555 | (found-point (point))) | |
70418205 RS |
556 | (if isearch-window-configuration |
557 | (set-window-configuration isearch-window-configuration)) | |
08200510 | 558 | |
d49b6338 RS |
559 | (if isearch-small-window |
560 | (goto-char found-point) | |
561 | ;; Exiting the save-window-excursion clobbers window-start; restore it. | |
9821535a | 562 | (set-window-start (selected-window) found-start t)) |
d49b6338 | 563 | |
08200510 RS |
564 | ;; If there was movement, mark the starting position. |
565 | ;; Maybe should test difference between and set mark iff > threshold. | |
566 | (if (/= (point) isearch-opoint) | |
9821535a RS |
567 | (or (and transient-mark-mode mark-active) |
568 | (progn | |
569 | (push-mark isearch-opoint t) | |
f3acf6f5 | 570 | (or executing-kbd-macro (> (minibuffer-depth) 0) |
9821535a | 571 | (message "Mark saved where search started")))))) |
08200510 RS |
572 | |
573 | (setq isearch-mode nil) | |
1cd3732c | 574 | (force-mode-line-update) |
8e1cae6d | 575 | |
35a4d143 | 576 | (if (and (> (length isearch-string) 0) (not nopush)) |
8e1cae6d | 577 | ;; Update the ring data. |
73d2bf95 | 578 | (isearch-update-ring isearch-string isearch-regexp)) |
8e1cae6d | 579 | |
8e1cae6d | 580 | (run-hooks 'isearch-mode-end-hook) |
0daa17f3 | 581 | (and (not edit) isearch-recursive-edit (exit-recursive-edit))) |
08200510 | 582 | |
73d2bf95 RS |
583 | (defun isearch-update-ring (string &optional regexp) |
584 | "Add STRING to the beginning of the search ring. | |
585 | REGEXP says which ring to use." | |
586 | (if regexp | |
587 | (if (or (null regexp-search-ring) | |
fd89878d | 588 | (not (string= string (car regexp-search-ring)))) |
73d2bf95 RS |
589 | (progn |
590 | (setq regexp-search-ring | |
fd89878d | 591 | (cons string regexp-search-ring)) |
73d2bf95 RS |
592 | (if (> (length regexp-search-ring) regexp-search-ring-max) |
593 | (setcdr (nthcdr (1- search-ring-max) regexp-search-ring) | |
594 | nil)))) | |
595 | (if (or (null search-ring) | |
fd89878d | 596 | (not (string= string (car search-ring)))) |
73d2bf95 | 597 | (progn |
fd89878d | 598 | (setq search-ring (cons string search-ring)) |
73d2bf95 RS |
599 | (if (> (length search-ring) search-ring-max) |
600 | (setcdr (nthcdr (1- search-ring-max) search-ring) nil)))))) | |
601 | ||
08200510 | 602 | ;;; Switching buffers should first terminate isearch-mode. |
eb8c3be9 | 603 | ;;; This is done quite differently for each variant of emacs. |
08200510 RS |
604 | ;;; For lemacs, see Exiting in lemacs below |
605 | ||
606 | ;; For Emacs 19, the frame switch event is handled. | |
607 | (defun isearch-switch-frame-handler () | |
608 | (interactive) ;; Is this necessary? | |
609 | ;; First terminate isearch-mode. | |
610 | (isearch-done) | |
dba1ec55 | 611 | (handle-switch-frame (car (cdr (isearch-last-command-char))))) |
08200510 | 612 | |
8e1cae6d | 613 | \f |
8e1cae6d JB |
614 | ;; Commands active while inside of the isearch minor mode. |
615 | ||
616 | (defun isearch-exit () | |
617 | "Exit search normally. | |
618 | However, if this is the first command after starting incremental | |
619 | search and `search-nonincremental-instead' is non-nil, do a | |
08200510 | 620 | nonincremental search instead via `isearch-edit-string'." |
8e1cae6d JB |
621 | (interactive) |
622 | (if (and search-nonincremental-instead | |
623 | (= 0 (length isearch-string))) | |
08200510 RS |
624 | (let ((isearch-nonincremental t)) |
625 | (isearch-edit-string))) | |
8e1cae6d JB |
626 | (isearch-done)) |
627 | ||
628 | ||
629 | (defun isearch-edit-string () | |
08200510 RS |
630 | "Edit the search string in the minibuffer. |
631 | The following additional command keys are active while editing. | |
632 | \\<minibuffer-local-isearch-map> | |
633 | \\[exit-minibuffer] to resume incremental searching with the edited string. | |
634 | \\[isearch-nonincremental-exit-minibuffer] to do one nonincremental search. | |
635 | \\[isearch-forward-exit-minibuffer] to resume isearching forward. | |
8eb40e74 | 636 | \\[isearch-reverse-exit-minibuffer] to resume isearching backward. |
08200510 | 637 | \\[isearch-ring-advance-edit] to replace the search string with the next item in the search ring. |
eb8c3be9 | 638 | \\[isearch-ring-retreat-edit] to replace the search string with the previous item in the search ring. |
08200510 | 639 | \\[isearch-complete-edit] to complete the search string using the search ring. |
8eb40e74 | 640 | \\<isearch-mode-map> |
08200510 RS |
641 | If first char entered is \\[isearch-yank-word], then do word search instead." |
642 | ||
643 | ;; This code is very hairy for several reasons, explained in the code. | |
644 | ;; Mainly, isearch-mode must be terminated while editing and then restarted. | |
645 | ;; If there were a way to catch any change of buffer from the minibuffer, | |
646 | ;; this could be simplified greatly. | |
eb8c3be9 | 647 | ;; Editing doesn't back up the search point. Should it? |
8e1cae6d | 648 | (interactive) |
08200510 | 649 | (condition-case err |
e900ced4 RS |
650 | (progn |
651 | (let ((isearch-nonincremental isearch-nonincremental) | |
652 | ||
653 | ;; Locally bind all isearch global variables to protect them | |
654 | ;; from recursive isearching. | |
655 | ;; isearch-string -message and -forward are not bound | |
656 | ;; so they may be changed. Instead, save the values. | |
657 | (isearch-new-string isearch-string) | |
658 | (isearch-new-message isearch-message) | |
659 | (isearch-new-forward isearch-forward) | |
660 | (isearch-new-word isearch-word) | |
661 | ||
662 | (isearch-regexp isearch-regexp) | |
663 | (isearch-op-fun isearch-op-fun) | |
664 | (isearch-cmds isearch-cmds) | |
665 | (isearch-success isearch-success) | |
666 | (isearch-wrapped isearch-wrapped) | |
667 | (isearch-barrier isearch-barrier) | |
668 | (isearch-adjusted isearch-adjusted) | |
669 | (isearch-yank-flag isearch-yank-flag) | |
670 | (isearch-invalid-regexp isearch-invalid-regexp) | |
671 | (isearch-within-brackets isearch-within-brackets) | |
672 | ;;; Don't bind this. We want isearch-search, below, to set it. | |
673 | ;;; And the old value won't matter after that. | |
674 | ;;; (isearch-other-end isearch-other-end) | |
675 | ;;; Perhaps some of these other variables should be bound for a | |
676 | ;;; shorter period, ending before the next isearch-search. | |
677 | ;;; But there doesn't seem to be a real bug, so let's not risk it now. | |
678 | (isearch-opoint isearch-opoint) | |
679 | (isearch-slow-terminal-mode isearch-slow-terminal-mode) | |
680 | (isearch-small-window isearch-small-window) | |
681 | (isearch-recursive-edit isearch-recursive-edit) | |
682 | ;; Save current configuration so we can restore it here. | |
683 | (isearch-window-configuration (current-window-configuration)) | |
684 | ) | |
685 | ||
686 | ;; Actually terminate isearching until editing is done. | |
687 | ;; This is so that the user can do anything without failure, | |
688 | ;; like switch buffers and start another isearch, and return. | |
689 | (condition-case err | |
690 | (isearch-done t t) | |
691 | (exit nil)) ; was recursive editing | |
692 | ||
693 | (isearch-message) ;; for read-char | |
694 | (unwind-protect | |
695 | (let* (;; Why does following read-char echo? | |
696 | ;;(echo-keystrokes 0) ;; not needed with above message | |
697 | (e (let ((cursor-in-echo-area t)) | |
698 | (read-event))) | |
699 | ;; Binding minibuffer-history-symbol to nil is a work-around | |
700 | ;; for some incompatibility with gmhist. | |
701 | (minibuffer-history-symbol) | |
702 | (message-log-max nil)) | |
703 | ;; If the first character the user types when we prompt them | |
704 | ;; for a string is the yank-word character, then go into | |
705 | ;; word-search mode. Otherwise unread that character and | |
706 | ;; read a key the normal way. | |
707 | ;; Word search does not apply (yet) to regexp searches, | |
708 | ;; no check is made here. | |
709 | (message (isearch-message-prefix nil nil t)) | |
710 | (if (eq 'isearch-yank-word | |
711 | (lookup-key isearch-mode-map (vector e))) | |
712 | (setq isearch-word t;; so message-prefix is right | |
713 | isearch-new-word t) | |
714 | (cancel-kbd-macro-events) | |
715 | (isearch-unread e)) | |
716 | (setq cursor-in-echo-area nil) | |
717 | (setq isearch-new-string | |
718 | (let (junk-ring) | |
719 | (read-from-minibuffer | |
720 | (isearch-message-prefix nil nil isearch-nonincremental) | |
721 | isearch-string | |
722 | minibuffer-local-isearch-map nil | |
723 | 'junk-ring)) | |
724 | isearch-new-message | |
725 | (mapconcat 'isearch-text-char-description | |
726 | isearch-new-string ""))) | |
727 | ;; Always resume isearching by restarting it. | |
728 | (isearch-mode isearch-forward | |
729 | isearch-regexp | |
730 | isearch-op-fun | |
731 | nil | |
732 | isearch-word) | |
733 | ||
734 | ;; Copy new local values to isearch globals | |
735 | (setq isearch-string isearch-new-string | |
736 | isearch-message isearch-new-message | |
737 | isearch-forward isearch-new-forward | |
738 | isearch-word isearch-new-word)) | |
739 | ||
740 | ;; Empty isearch-string means use default. | |
741 | (if (= 0 (length isearch-string)) | |
742 | (setq isearch-string (or (car (if isearch-regexp | |
743 | regexp-search-ring | |
744 | search-ring)) | |
745 | "")) | |
746 | ;; This used to set the last search string, | |
747 | ;; but I think it is not right to do that here. | |
748 | ;; Only the string actually used should be saved. | |
749 | )) | |
750 | ||
751 | ;; Push the state as of before this C-s. | |
752 | (isearch-push-state) | |
08200510 RS |
753 | |
754 | ;; Reinvoke the pending search. | |
08200510 RS |
755 | (isearch-search) |
756 | (isearch-update) | |
757 | (if isearch-nonincremental | |
758 | (progn | |
759 | ;; (sit-for 1) ;; needed if isearch-done does: (message "") | |
760 | (isearch-done)))) | |
8e1cae6d | 761 | |
08200510 RS |
762 | (quit ; handle abort-recursive-edit |
763 | (isearch-abort) ;; outside of let to restore outside global values | |
764 | ))) | |
765 | ||
766 | (defun isearch-nonincremental-exit-minibuffer () | |
767 | (interactive) | |
768 | (setq isearch-nonincremental t) | |
769 | (exit-minibuffer)) | |
770 | ||
771 | (defun isearch-forward-exit-minibuffer () | |
772 | (interactive) | |
773 | (setq isearch-new-forward t) | |
774 | (exit-minibuffer)) | |
8e1cae6d | 775 | |
08200510 | 776 | (defun isearch-reverse-exit-minibuffer () |
8e1cae6d | 777 | (interactive) |
08200510 RS |
778 | (setq isearch-new-forward nil) |
779 | (exit-minibuffer)) | |
780 | ||
19993c54 RS |
781 | (defun isearch-cancel () |
782 | "Terminate the search and go back to the starting point." | |
783 | (interactive) | |
784 | (goto-char isearch-opoint) | |
785 | (isearch-done t) | |
786 | (signal 'quit nil)) ; and pass on quit signal | |
08200510 RS |
787 | |
788 | (defun isearch-abort () | |
b7852303 | 789 | "Abort incremental search mode if searching is successful, signaling quit. |
08200510 | 790 | Otherwise, revert to previous successful search and continue searching. |
b7852303 | 791 | Use `isearch-exit' to quit without signaling." |
08200510 | 792 | (interactive) |
eb8c3be9 | 793 | ;; (ding) signal instead below, if quitting |
8e1cae6d JB |
794 | (discard-input) |
795 | (if isearch-success | |
796 | ;; If search is successful, move back to starting point | |
797 | ;; and really do quit. | |
798 | (progn (goto-char isearch-opoint) | |
509ed182 | 799 | (setq isearch-success nil) |
35a4d143 | 800 | (isearch-done t) ; exit isearch |
a5dcf63f | 801 | (signal 'quit nil)) ; and pass on quit signal |
925a67ca RS |
802 | ;; If search is failing, or has an incomplete regexp, |
803 | ;; rub out until it is once more successful. | |
804 | (while (or (not isearch-success) isearch-invalid-regexp) | |
805 | (isearch-pop-state)) | |
8e1cae6d JB |
806 | (isearch-update))) |
807 | ||
8e1cae6d JB |
808 | (defun isearch-repeat (direction) |
809 | ;; Utility for isearch-repeat-forward and -backward. | |
810 | (if (eq isearch-forward (eq direction 'forward)) | |
811 | ;; C-s in forward or C-r in reverse. | |
812 | (if (equal isearch-string "") | |
813 | ;; If search string is empty, use last one. | |
814 | (setq isearch-string | |
8e1cae6d | 815 | (or (if isearch-regexp |
a5dcf63f RS |
816 | (car regexp-search-ring) |
817 | (car search-ring)) | |
8e1cae6d JB |
818 | "") |
819 | isearch-message | |
08200510 | 820 | (mapconcat 'isearch-text-char-description |
8e1cae6d JB |
821 | isearch-string "")) |
822 | ;; If already have what to search for, repeat it. | |
823 | (or isearch-success | |
824 | (progn | |
8e1cae6d JB |
825 | (goto-char (if isearch-forward (point-min) (point-max))) |
826 | (setq isearch-wrapped t)))) | |
827 | ;; C-s in reverse or C-r in forward, change direction. | |
828 | (setq isearch-forward (not isearch-forward))) | |
829 | ||
830 | (setq isearch-barrier (point)) ; For subsequent \| if regexp. | |
6fefdc4b RS |
831 | |
832 | (if (equal isearch-string "") | |
833 | (setq isearch-success t) | |
99ae9e9f KH |
834 | (if (and isearch-success (equal (match-end 0) (match-beginning 0)) |
835 | (not isearch-just-started)) | |
8e1cae6d JB |
836 | ;; If repeating a search that found |
837 | ;; an empty string, ensure we advance. | |
6fefdc4b RS |
838 | (if (if isearch-forward (eobp) (bobp)) |
839 | ;; If there's nowhere to advance to, fail (and wrap next time). | |
840 | (progn | |
841 | (setq isearch-success nil) | |
842 | (ding)) | |
843 | (forward-char (if isearch-forward 1 -1)) | |
844 | (isearch-search)) | |
845 | (isearch-search))) | |
846 | ||
8e1cae6d JB |
847 | (isearch-push-state) |
848 | (isearch-update)) | |
849 | ||
850 | (defun isearch-repeat-forward () | |
851 | "Repeat incremental search forwards." | |
852 | (interactive) | |
853 | (isearch-repeat 'forward)) | |
854 | ||
855 | (defun isearch-repeat-backward () | |
856 | "Repeat incremental search backwards." | |
857 | (interactive) | |
858 | (isearch-repeat 'backward)) | |
859 | ||
860 | (defun isearch-toggle-regexp () | |
861 | "Toggle regexp searching on or off." | |
862 | ;; The status stack is left unchanged. | |
863 | (interactive) | |
864 | (setq isearch-regexp (not isearch-regexp)) | |
08200510 | 865 | (if isearch-regexp (setq isearch-word nil)) |
8e1cae6d JB |
866 | (isearch-update)) |
867 | ||
4453091d RS |
868 | (defun isearch-toggle-case-fold () |
869 | "Toggle case folding in searching on or off." | |
870 | (interactive) | |
871 | (setq isearch-case-fold-search | |
872 | (if isearch-case-fold-search nil 'yes)) | |
a56687f1 KH |
873 | (let ((message-log-max nil)) |
874 | (message "%s%s [case %ssensitive]" | |
875 | (isearch-message-prefix nil nil isearch-nonincremental) | |
876 | isearch-message | |
877 | (if isearch-case-fold-search "in" ""))) | |
4453091d RS |
878 | (setq isearch-adjusted t) |
879 | (sit-for 1) | |
880 | (isearch-update)) | |
881 | ||
8e1cae6d JB |
882 | (defun isearch-delete-char () |
883 | "Discard last input item and move point back. | |
884 | If no previous match was done, just beep." | |
885 | (interactive) | |
886 | (if (null (cdr isearch-cmds)) | |
887 | (ding) | |
888 | (isearch-pop-state)) | |
889 | (isearch-update)) | |
890 | ||
891 | ||
892 | (defun isearch-yank (chunk) | |
893 | ;; Helper for isearch-yank-word and isearch-yank-line | |
fd543be5 | 894 | ;; CHUNK should be word, line, kill, or x-sel. |
30d47262 RS |
895 | (let ((string (cond |
896 | ((eq chunk 'kill) | |
897 | (current-kill 0)) | |
fd543be5 KH |
898 | ((eq chunk 'x-sel) |
899 | (x-get-selection)) | |
30d47262 RS |
900 | (t |
901 | (save-excursion | |
902 | (and (not isearch-forward) isearch-other-end | |
903 | (goto-char isearch-other-end)) | |
904 | (buffer-substring | |
905 | (point) | |
906 | (save-excursion | |
907 | (cond | |
908 | ((eq chunk 'word) | |
909 | (forward-word 1)) | |
910 | ((eq chunk 'line) | |
911 | (end-of-line))) | |
912 | (point)))))))) | |
08200510 RS |
913 | ;; Downcase the string if not supposed to case-fold yanked strings. |
914 | (if (and isearch-case-fold-search | |
fdf5afa4 | 915 | (eq 'not-yanks search-upper-case)) |
08200510 RS |
916 | (setq string (downcase string))) |
917 | (if isearch-regexp (setq string (regexp-quote string))) | |
918 | (setq isearch-string (concat isearch-string string) | |
8e1cae6d JB |
919 | isearch-message |
920 | (concat isearch-message | |
08200510 RS |
921 | (mapconcat 'isearch-text-char-description |
922 | string "")) | |
8e1cae6d JB |
923 | ;; Don't move cursor in reverse search. |
924 | isearch-yank-flag t)) | |
925 | (isearch-search-and-update)) | |
926 | ||
30d47262 RS |
927 | (defun isearch-yank-kill () |
928 | "Pull string from kill ring into search string." | |
929 | (interactive) | |
930 | (isearch-yank 'kill)) | |
8e1cae6d JB |
931 | |
932 | (defun isearch-yank-word () | |
933 | "Pull next word from buffer into search string." | |
934 | (interactive) | |
935 | (isearch-yank 'word)) | |
936 | ||
937 | (defun isearch-yank-line () | |
938 | "Pull rest of line from buffer into search string." | |
939 | (interactive) | |
940 | (isearch-yank 'line)) | |
941 | ||
942 | ||
943 | (defun isearch-search-and-update () | |
944 | ;; Do the search and update the display. | |
945 | (if (and (not isearch-success) | |
946 | ;; unsuccessful regexp search may become | |
947 | ;; successful by addition of characters which | |
948 | ;; make isearch-string valid | |
949 | (not isearch-regexp)) | |
950 | nil | |
951 | ;; In reverse search, adding stuff at | |
952 | ;; the end may cause zero or many more chars to be | |
953 | ;; matched, in the string following point. | |
954 | ;; Allow all those possibilities without moving point as | |
955 | ;; long as the match does not extend past search origin. | |
956 | (if (and (not isearch-forward) (not isearch-adjusted) | |
957 | (condition-case () | |
99ae9e9f KH |
958 | (let ((case-fold-search isearch-case-fold-search)) |
959 | (looking-at (if isearch-regexp isearch-string | |
960 | (regexp-quote isearch-string)))) | |
8e1cae6d JB |
961 | (error nil)) |
962 | (or isearch-yank-flag | |
963 | (<= (match-end 0) | |
964 | (min isearch-opoint isearch-barrier)))) | |
965 | (setq isearch-success t | |
966 | isearch-invalid-regexp nil | |
c5f6b356 | 967 | isearch-within-brackets nil |
8e1cae6d JB |
968 | isearch-other-end (match-end 0)) |
969 | ;; Not regexp, not reverse, or no match at point. | |
970 | (if (and isearch-other-end (not isearch-adjusted)) | |
971 | (goto-char (if isearch-forward isearch-other-end | |
972 | (min isearch-opoint | |
973 | isearch-barrier | |
974 | (1+ isearch-other-end))))) | |
975 | (isearch-search) | |
976 | )) | |
977 | (isearch-push-state) | |
978 | (if isearch-op-fun (funcall isearch-op-fun)) | |
979 | (isearch-update)) | |
980 | ||
981 | ||
982 | ;; *, ?, and | chars can make a regexp more liberal. | |
08200510 | 983 | ;; They can make a regexp match sooner or make it succeed instead of failing. |
8e1cae6d JB |
984 | ;; So go back to place last successful search started |
985 | ;; or to the last ^S/^R (barrier), whichever is nearer. | |
08200510 | 986 | ;; + needs no special handling because the string must match at least once. |
8e1cae6d JB |
987 | |
988 | (defun isearch-*-char () | |
989 | "Handle * and ? specially in regexps." | |
990 | (interactive) | |
991 | (if isearch-regexp | |
992 | ||
993 | (progn | |
994 | (setq isearch-adjusted t) | |
149d4fe5 RS |
995 | ;; Get the isearch-other-end from before the last search. |
996 | ;; We want to start from there, | |
997 | ;; so that we don't retreat farther than that. | |
998 | ;; (car isearch-cmds) is after last search; | |
999 | ;; (car (cdr isearch-cmds)) is from before it. | |
1000 | (let ((cs (nth 5 (car (cdr isearch-cmds))))) | |
8e1cae6d JB |
1001 | (setq cs (or cs isearch-barrier)) |
1002 | (goto-char | |
1003 | (if isearch-forward | |
1004 | (max cs isearch-barrier) | |
1005 | (min cs isearch-barrier)))))) | |
08200510 | 1006 | (isearch-process-search-char (isearch-last-command-char))) |
8e1cae6d JB |
1007 | |
1008 | ||
8e1cae6d JB |
1009 | (defun isearch-|-char () |
1010 | "If in regexp search, jump to the barrier." | |
1011 | (interactive) | |
1012 | (if isearch-regexp | |
1013 | (progn | |
1014 | (setq isearch-adjusted t) | |
1015 | (goto-char isearch-barrier))) | |
08200510 | 1016 | (isearch-process-search-char (isearch-last-command-char))) |
8e1cae6d JB |
1017 | |
1018 | ||
b457cc3b | 1019 | (defalias 'isearch-other-control-char 'isearch-other-meta-char) |
8e1cae6d JB |
1020 | |
1021 | (defun isearch-other-meta-char () | |
8f90f594 | 1022 | "Exit the search normally and reread this key sequence. |
35a4d143 RS |
1023 | But only if `search-exit-option' is non-nil, the default. |
1024 | If it is the symbol `edit', the search string is edited in the minibuffer | |
1025 | and the meta character is unread so that it applies to editing the string." | |
8e1cae6d | 1026 | (interactive) |
c6431f12 KH |
1027 | (let* ((key (this-command-keys)) |
1028 | (main-event (aref key 0)) | |
1029 | (keylist (listify-key-sequence key))) | |
24b5caec | 1030 | (cond ((and (= (length key) 1) |
d94eb6eb | 1031 | (let ((lookup (lookup-key function-key-map key))) |
3f866b53 KH |
1032 | (not (or (null lookup) (integerp lookup) |
1033 | (keymapp lookup))))) | |
24b5caec RS |
1034 | ;; Handle a function key that translates into something else. |
1035 | ;; If the key has a global definition too, | |
1036 | ;; exit and unread the key itself, so its global definition runs. | |
1037 | ;; Otherwise, unread the translation, | |
1038 | ;; so that the translated key takes effect within isearch. | |
d94eb6eb | 1039 | (cancel-kbd-macro-events) |
24b5caec RS |
1040 | (if (lookup-key global-map key) |
1041 | (progn | |
1042 | (isearch-done) | |
1043 | (apply 'isearch-unread keylist)) | |
1044 | (apply 'isearch-unread | |
1045 | (listify-key-sequence (lookup-key function-key-map key))))) | |
1046 | ( | |
c6431f12 KH |
1047 | ;; Handle an undefined shifted control character |
1048 | ;; by downshifting it if that makes it defined. | |
1049 | ;; (As read-key-sequence would normally do, | |
1050 | ;; if we didn't have a default definition.) | |
1051 | (let ((mods (event-modifiers main-event))) | |
1052 | (and (integerp main-event) | |
1053 | (memq 'shift mods) | |
1054 | (memq 'control mods) | |
1055 | (lookup-key isearch-mode-map | |
1056 | (let ((copy (copy-sequence key))) | |
1057 | (aset copy 0 | |
1058 | (- main-event (- ?\C-\S-a ?\C-a))) | |
1059 | copy) | |
1060 | nil))) | |
1061 | (setcar keylist (- main-event (- ?\C-\S-a ?\C-a))) | |
d94eb6eb | 1062 | (cancel-kbd-macro-events) |
c6431f12 KH |
1063 | (apply 'isearch-unread keylist)) |
1064 | ((eq search-exit-option 'edit) | |
1065 | (apply 'isearch-unread keylist) | |
1066 | (isearch-edit-string)) | |
1067 | (search-exit-option | |
1068 | (let (window) | |
d94eb6eb | 1069 | (cancel-kbd-macro-events) |
c6431f12 KH |
1070 | (apply 'isearch-unread keylist) |
1071 | ;; Properly handle scroll-bar and mode-line clicks | |
1072 | ;; for which a dummy prefix event was generated as (aref key 0). | |
1073 | (and (> (length key) 1) | |
1074 | (symbolp (aref key 0)) | |
1075 | (listp (aref key 1)) | |
1076 | (not (numberp (posn-point (event-start (aref key 1))))) | |
1077 | ;; Convert the event back into its raw form, | |
1078 | ;; with the dummy prefix implicit in the mouse event, | |
1079 | ;; so it will get split up once again. | |
1080 | (progn (setq unread-command-events | |
1081 | (cdr unread-command-events)) | |
1082 | (setq main-event (car unread-command-events)) | |
1083 | (setcar (cdr (event-start main-event)) | |
1084 | (car (nth 1 (event-start main-event)))))) | |
1085 | ;; If we got a mouse click, maybe it was read with the buffer | |
1086 | ;; it was clicked on. If so, that buffer, not the current one, | |
1087 | ;; is in isearch mode. So end the search in that buffer. | |
1088 | (if (and (listp main-event) | |
1089 | (setq window (posn-window (event-start main-event))) | |
1090 | (windowp window)) | |
1091 | (save-excursion | |
1092 | (set-buffer (window-buffer window)) | |
1093 | (isearch-done)) | |
1094 | (isearch-done)))) | |
1095 | (t;; otherwise nil | |
1096 | (isearch-process-search-string key key))))) | |
8e1cae6d | 1097 | |
8e1cae6d JB |
1098 | (defun isearch-quote-char () |
1099 | "Quote special characters for incremental search." | |
1100 | (interactive) | |
1101 | (isearch-process-search-char (read-quoted-char (isearch-message t)))) | |
1102 | ||
8e1cae6d JB |
1103 | (defun isearch-return-char () |
1104 | "Convert return into newline for incremental search. | |
1105 | Obsolete." | |
1106 | (interactive) | |
1107 | (isearch-process-search-char ?\n)) | |
1108 | ||
8e1cae6d | 1109 | (defun isearch-printing-char () |
b68c164d | 1110 | "Add this ordinary printing character to the search string and search." |
8e1cae6d | 1111 | (interactive) |
f46d5091 KH |
1112 | (if isearch-multibyte-characters-flag |
1113 | (isearch-process-search-multibyte-characters (isearch-last-command-char)) | |
1114 | (isearch-process-search-char (isearch-last-command-char)))) | |
8e1cae6d JB |
1115 | |
1116 | (defun isearch-whitespace-chars () | |
08200510 | 1117 | "Match all whitespace chars, if in regexp mode. |
b68c164d | 1118 | If you want to search for just a space, type C-q SPC." |
8e1cae6d | 1119 | (interactive) |
08200510 | 1120 | (if isearch-regexp |
9da6682f RS |
1121 | (if (and search-whitespace-regexp (not isearch-within-brackets) |
1122 | (not isearch-invalid-regexp)) | |
08200510 RS |
1123 | (isearch-process-search-string search-whitespace-regexp " ") |
1124 | (isearch-printing-char)) | |
1125 | (progn | |
eb8c3be9 | 1126 | ;; This way of doing word search doesn't correctly extend current search. |
08200510 RS |
1127 | ;; (setq isearch-word t) |
1128 | ;; (setq isearch-adjusted t) | |
1129 | ;; (goto-char isearch-barrier) | |
1130 | (isearch-printing-char)))) | |
8e1cae6d JB |
1131 | |
1132 | (defun isearch-process-search-char (char) | |
1133 | ;; Append the char to the search string, update the message and re-search. | |
08200510 RS |
1134 | (isearch-process-search-string |
1135 | (isearch-char-to-string char) | |
1136 | (isearch-text-char-description char))) | |
8e1cae6d JB |
1137 | |
1138 | (defun isearch-process-search-string (string message) | |
1139 | (setq isearch-string (concat isearch-string string) | |
1140 | isearch-message (concat isearch-message message)) | |
1141 | (isearch-search-and-update)) | |
1142 | ||
1143 | \f | |
8e1cae6d JB |
1144 | ;; Search Ring |
1145 | ||
08200510 RS |
1146 | (defun isearch-ring-adjust1 (advance) |
1147 | ;; Helper for isearch-ring-adjust | |
1148 | (let* ((ring (if isearch-regexp regexp-search-ring search-ring)) | |
8e1cae6d JB |
1149 | (length (length ring)) |
1150 | (yank-pointer-name (if isearch-regexp | |
08200510 | 1151 | 'regexp-search-ring-yank-pointer |
8e1cae6d JB |
1152 | 'search-ring-yank-pointer)) |
1153 | (yank-pointer (eval yank-pointer-name))) | |
1154 | (if (zerop length) | |
1155 | () | |
1156 | (set yank-pointer-name | |
1157 | (setq yank-pointer | |
ffbc30b2 PE |
1158 | (mod (+ (or yank-pointer 0) |
1159 | (if advance -1 1)) | |
1160 | length))) | |
a5dcf63f | 1161 | (setq isearch-string (nth yank-pointer ring) |
08200510 RS |
1162 | isearch-message (mapconcat 'isearch-text-char-description |
1163 | isearch-string ""))))) | |
1164 | ||
1165 | (defun isearch-ring-adjust (advance) | |
1166 | ;; Helper for isearch-ring-advance and isearch-ring-retreat | |
08200510 | 1167 | (isearch-ring-adjust1 advance) |
08200510 RS |
1168 | (if search-ring-update |
1169 | (progn | |
1170 | (isearch-search) | |
1171 | (isearch-update)) | |
1172 | (isearch-edit-string) | |
2ff20b7e RS |
1173 | ) |
1174 | (isearch-push-state)) | |
8e1cae6d JB |
1175 | |
1176 | (defun isearch-ring-advance () | |
1177 | "Advance to the next search string in the ring." | |
08200510 | 1178 | ;; This could be more general to handle a prefix arg, but who would use it. |
8e1cae6d JB |
1179 | (interactive) |
1180 | (isearch-ring-adjust 'advance)) | |
1181 | ||
1182 | (defun isearch-ring-retreat () | |
1183 | "Retreat to the previous search string in the ring." | |
1184 | (interactive) | |
1185 | (isearch-ring-adjust nil)) | |
1186 | ||
a5dcf63f RS |
1187 | (defun isearch-ring-advance-edit (n) |
1188 | "Insert the next element of the search history into the minibuffer." | |
1189 | (interactive "p") | |
1190 | (let* ((yank-pointer-name (if isearch-regexp | |
1191 | 'regexp-search-ring-yank-pointer | |
1192 | 'search-ring-yank-pointer)) | |
1193 | (yank-pointer (eval yank-pointer-name)) | |
1194 | (ring (if isearch-regexp regexp-search-ring search-ring)) | |
1195 | (length (length ring))) | |
1196 | (if (zerop length) | |
1197 | () | |
1198 | (set yank-pointer-name | |
1199 | (setq yank-pointer | |
ffbc30b2 PE |
1200 | (mod (- (or yank-pointer 0) n) |
1201 | length))) | |
a5dcf63f | 1202 | |
a5dcf63f | 1203 | (erase-buffer) |
35a4d143 | 1204 | (insert (nth yank-pointer ring)) |
49c13105 | 1205 | (goto-char (point-max))))) |
a5dcf63f RS |
1206 | |
1207 | (defun isearch-ring-retreat-edit (n) | |
1208 | "Inserts the previous element of the search history into the minibuffer." | |
1209 | (interactive "p") | |
1210 | (isearch-ring-advance-edit (- n))) | |
1211 | ||
1212 | ;;(defun isearch-ring-adjust-edit (advance) | |
1213 | ;; "Use the next or previous search string in the ring while in minibuffer." | |
1214 | ;; (isearch-ring-adjust1 advance) | |
1215 | ;; (erase-buffer) | |
1216 | ;; (insert isearch-string)) | |
1217 | ||
1218 | ;;(defun isearch-ring-advance-edit () | |
1219 | ;; (interactive) | |
1220 | ;; (isearch-ring-adjust-edit 'advance)) | |
1221 | ||
1222 | ;;(defun isearch-ring-retreat-edit () | |
1223 | ;; "Retreat to the previous search string in the ring while in the minibuffer." | |
1224 | ;; (interactive) | |
1225 | ;; (isearch-ring-adjust-edit nil)) | |
08200510 RS |
1226 | |
1227 | ||
1228 | (defun isearch-complete1 () | |
1229 | ;; Helper for isearch-complete and isearch-complete-edit | |
1230 | ;; Return t if completion OK, nil if no completion exists. | |
1231 | (let* ((ring (if isearch-regexp regexp-search-ring search-ring)) | |
1232 | (alist (mapcar (function (lambda (string) (list string))) ring)) | |
1233 | (completion-ignore-case case-fold-search) | |
1234 | (completion (try-completion isearch-string alist))) | |
1235 | (cond | |
1236 | ((eq completion t) | |
1237 | ;; isearch-string stays the same | |
1238 | t) | |
1239 | ((or completion ; not nil, must be a string | |
b7852303 | 1240 | (= 0 (length isearch-string))) ; shouldn't have to say this |
08200510 | 1241 | (if (equal completion isearch-string) ;; no extension? |
36bcac3f RS |
1242 | (progn |
1243 | (if completion-auto-help | |
1244 | (with-output-to-temp-buffer "*Isearch completions*" | |
1245 | (display-completion-list | |
1246 | (all-completions isearch-string alist)))) | |
1247 | t) | |
1248 | (and completion | |
1249 | (setq isearch-string completion)))) | |
08200510 RS |
1250 | (t |
1251 | (message "No completion") ; waits a second if in minibuffer | |
1252 | nil)))) | |
1253 | ||
1254 | (defun isearch-complete () | |
1255 | "Complete the search string from the strings on the search ring. | |
1256 | The completed string is then editable in the minibuffer. | |
1257 | If there is no completion possible, say so and continue searching." | |
1258 | (interactive) | |
1259 | (if (isearch-complete1) | |
1260 | (isearch-edit-string) | |
1261 | ;; else | |
1262 | (sit-for 1) | |
1263 | (isearch-update))) | |
8e1cae6d | 1264 | |
08200510 RS |
1265 | (defun isearch-complete-edit () |
1266 | "Same as `isearch-complete' except in the minibuffer." | |
1267 | (interactive) | |
1268 | (setq isearch-string (buffer-string)) | |
1269 | (if (isearch-complete1) | |
8e1cae6d | 1270 | (progn |
08200510 RS |
1271 | (erase-buffer) |
1272 | (insert isearch-string)))) | |
8e1cae6d JB |
1273 | |
1274 | \f | |
8e1cae6d | 1275 | ;; The search status stack (and isearch window-local variables, not used). |
08200510 | 1276 | ;; Need a structure for this. |
8e1cae6d JB |
1277 | |
1278 | (defun isearch-top-state () | |
8e1cae6d JB |
1279 | (let ((cmd (car isearch-cmds))) |
1280 | (setq isearch-string (car cmd) | |
1281 | isearch-message (car (cdr cmd)) | |
1282 | isearch-success (nth 3 cmd) | |
1283 | isearch-forward (nth 4 cmd) | |
1284 | isearch-other-end (nth 5 cmd) | |
08200510 RS |
1285 | isearch-word (nth 6 cmd) |
1286 | isearch-invalid-regexp (nth 7 cmd) | |
1287 | isearch-wrapped (nth 8 cmd) | |
c5f6b356 | 1288 | isearch-barrier (nth 9 cmd) |
f551b97d RS |
1289 | isearch-within-brackets (nth 10 cmd) |
1290 | isearch-case-fold-search (nth 11 cmd)) | |
8e1cae6d JB |
1291 | (goto-char (car (cdr (cdr cmd)))))) |
1292 | ||
1293 | (defun isearch-pop-state () | |
8e1cae6d JB |
1294 | (setq isearch-cmds (cdr isearch-cmds)) |
1295 | (isearch-top-state) | |
1296 | ) | |
1297 | ||
1298 | (defun isearch-push-state () | |
1299 | (setq isearch-cmds | |
1300 | (cons (list isearch-string isearch-message (point) | |
1301 | isearch-success isearch-forward isearch-other-end | |
08200510 | 1302 | isearch-word |
c5f6b356 | 1303 | isearch-invalid-regexp isearch-wrapped isearch-barrier |
f551b97d | 1304 | isearch-within-brackets isearch-case-fold-search) |
8e1cae6d JB |
1305 | isearch-cmds))) |
1306 | ||
8e1cae6d | 1307 | \f |
8e1cae6d JB |
1308 | ;; Message string |
1309 | ||
1310 | (defun isearch-message (&optional c-q-hack ellipsis) | |
1311 | ;; Generate and print the message string. | |
1312 | (let ((cursor-in-echo-area ellipsis) | |
1313 | (m (concat | |
08200510 | 1314 | (isearch-message-prefix c-q-hack ellipsis isearch-nonincremental) |
8e1cae6d JB |
1315 | isearch-message |
1316 | (isearch-message-suffix c-q-hack ellipsis) | |
1317 | ))) | |
a56687f1 KH |
1318 | (if c-q-hack |
1319 | m | |
1320 | (let ((message-log-max nil)) | |
1321 | (message "%s" m))))) | |
8e1cae6d | 1322 | |
08200510 | 1323 | (defun isearch-message-prefix (&optional c-q-hack ellipsis nonincremental) |
8e1cae6d JB |
1324 | ;; If about to search, and previous search regexp was invalid, |
1325 | ;; check that it still is. If it is valid now, | |
1326 | ;; let the message we display while searching say that it is valid. | |
1327 | (and isearch-invalid-regexp ellipsis | |
1328 | (condition-case () | |
1329 | (progn (re-search-forward isearch-string (point) t) | |
8eb40e74 KH |
1330 | (setq isearch-invalid-regexp nil |
1331 | isearch-within-brackets nil)) | |
8e1cae6d JB |
1332 | (error nil))) |
1333 | ;; If currently failing, display no ellipsis. | |
1334 | (or isearch-success (setq ellipsis nil)) | |
1335 | (let ((m (concat (if isearch-success "" "failing ") | |
7badea30 RS |
1336 | (if (and isearch-wrapped |
1337 | (if isearch-forward | |
1338 | (> (point) isearch-opoint) | |
1339 | (< (point) isearch-opoint))) | |
1340 | "over") | |
8e1cae6d | 1341 | (if isearch-wrapped "wrapped ") |
08200510 | 1342 | (if isearch-word "word " "") |
8e1cae6d | 1343 | (if isearch-regexp "regexp " "") |
08200510 | 1344 | (if nonincremental "search" "I-search") |
f46d5091 KH |
1345 | (if isearch-forward "" " backward") |
1346 | (if isearch-multibyte-characters-flag | |
1347 | (concat " [" default-input-method-title "]: ") | |
1348 | ": ") | |
8e1cae6d JB |
1349 | ))) |
1350 | (aset m 0 (upcase (aref m 0))) | |
1351 | m)) | |
1352 | ||
1353 | ||
1354 | (defun isearch-message-suffix (&optional c-q-hack ellipsis) | |
1355 | (concat (if c-q-hack "^Q" "") | |
1356 | (if isearch-invalid-regexp | |
1357 | (concat " [" isearch-invalid-regexp "]") | |
1358 | ""))) | |
1359 | ||
1360 | \f | |
8e1cae6d JB |
1361 | ;;; Searching |
1362 | ||
1363 | (defun isearch-search () | |
1364 | ;; Do the search with the current search string. | |
1365 | (isearch-message nil t) | |
4453091d | 1366 | (if (and (eq isearch-case-fold-search t) search-upper-case) |
b78559b0 RS |
1367 | (setq isearch-case-fold-search |
1368 | (isearch-no-upper-case-p isearch-string isearch-regexp))) | |
8e1cae6d JB |
1369 | (condition-case lossage |
1370 | (let ((inhibit-quit nil) | |
86bfaffe RS |
1371 | (case-fold-search isearch-case-fold-search) |
1372 | (retry t)) | |
8e1cae6d | 1373 | (if isearch-regexp (setq isearch-invalid-regexp nil)) |
c5f6b356 | 1374 | (setq isearch-within-brackets nil) |
86bfaffe RS |
1375 | (while retry |
1376 | (setq isearch-success | |
1377 | (funcall | |
1378 | (cond (isearch-word | |
1379 | (if isearch-forward | |
1380 | 'word-search-forward 'word-search-backward)) | |
1381 | (isearch-regexp | |
1382 | (if isearch-forward | |
1383 | 're-search-forward 're-search-backward)) | |
1384 | (t | |
1385 | (if isearch-forward 'search-forward 'search-backward))) | |
1386 | isearch-string nil t)) | |
1387 | ;; Clear RETRY unless we matched some invisible text | |
1388 | ;; and we aren't supposed to do that. | |
1389 | (if (or search-invisible | |
1390 | (not isearch-success) | |
1391 | (bobp) (eobp) | |
1392 | (= (match-beginning 0) (match-end 0)) | |
1393 | (not (isearch-range-invisible | |
1394 | (match-beginning 0) (match-end 0)))) | |
1395 | (setq retry nil))) | |
99ae9e9f | 1396 | (setq isearch-just-started nil) |
8e1cae6d JB |
1397 | (if isearch-success |
1398 | (setq isearch-other-end | |
1399 | (if isearch-forward (match-beginning 0) (match-end 0))))) | |
1400 | ||
d32696d4 | 1401 | (quit (isearch-unread ?\C-g) |
8e1cae6d JB |
1402 | (setq isearch-success nil)) |
1403 | ||
1404 | (invalid-regexp | |
1405 | (setq isearch-invalid-regexp (car (cdr lossage))) | |
c5f6b356 RS |
1406 | (setq isearch-within-brackets (string-match "\\`Unmatched \\[" |
1407 | isearch-invalid-regexp)) | |
8e1cae6d JB |
1408 | (if (string-match |
1409 | "\\`Premature \\|\\`Unmatched \\|\\`Invalid " | |
1410 | isearch-invalid-regexp) | |
f1c03125 RS |
1411 | (setq isearch-invalid-regexp "incomplete input"))) |
1412 | (error | |
1413 | ;; stack overflow in regexp search. | |
1414 | (setq isearch-invalid-regexp (car (cdr lossage))))) | |
8e1cae6d JB |
1415 | |
1416 | (if isearch-success | |
1417 | nil | |
1418 | ;; Ding if failed this time after succeeding last time. | |
1419 | (and (nth 3 (car isearch-cmds)) | |
1420 | (ding)) | |
1421 | (goto-char (nth 2 (car isearch-cmds))))) | |
1422 | ||
86bfaffe RS |
1423 | (defun isearch-range-invisible (beg end) |
1424 | "Return t if all the bext from BEG to END is invisible." | |
1425 | (and (/= beg end) | |
1426 | ;; Check that invisibility runs up to END. | |
1427 | (save-excursion | |
1428 | (goto-char beg) | |
1429 | ;; If the following character is currently invisible, | |
1430 | ;; skip all characters with that same `invisible' property value. | |
1431 | ;; Do that over and over. | |
1432 | (while (and (< (point) end) | |
1433 | (let ((prop | |
1434 | (get-char-property (point) 'invisible))) | |
1435 | (if (eq buffer-invisibility-spec t) | |
1436 | prop | |
1437 | (or (memq prop buffer-invisibility-spec) | |
1438 | (assq prop buffer-invisibility-spec))))) | |
1439 | (if (get-text-property (point) 'invisible) | |
1440 | (goto-char (next-single-property-change (point) 'invisible | |
1441 | nil end)) | |
1442 | (goto-char (next-overlay-change (point))))) | |
1443 | ;; See if invisibility reaches up thru END. | |
1444 | (>= (point) end)))) | |
08200510 RS |
1445 | |
1446 | \f | |
08200510 RS |
1447 | ;;; Highlighting |
1448 | ||
b78559b0 | 1449 | (defvar isearch-overlay nil) |
08200510 | 1450 | |
b78559b0 | 1451 | (defun isearch-highlight (beg end) |
f5f6a944 | 1452 | (if (or (null search-highlight) (null window-system)) |
08200510 | 1453 | nil |
b78559b0 RS |
1454 | (or isearch-overlay (setq isearch-overlay (make-overlay beg end))) |
1455 | (move-overlay isearch-overlay beg end (current-buffer)) | |
82318db5 RS |
1456 | (overlay-put isearch-overlay 'face |
1457 | (if (internal-find-face 'isearch nil) | |
1458 | 'isearch 'region)))) | |
b78559b0 RS |
1459 | |
1460 | (defun isearch-dehighlight (totally) | |
1461 | (if isearch-overlay | |
1462 | (delete-overlay isearch-overlay))) | |
08200510 | 1463 | |
08200510 RS |
1464 | ;;; General utilities |
1465 | ||
08200510 | 1466 | |
b78559b0 RS |
1467 | (defun isearch-no-upper-case-p (string regexp-flag) |
1468 | "Return t if there are no upper case chars in STRING. | |
b7852303 | 1469 | If REGEXP-FLAG is non-nil, disregard letters preceded by `\\' (but not `\\\\') |
b78559b0 | 1470 | since they have special meaning in a regexp." |
59057198 RS |
1471 | (let (quote-flag (i 0) (len (length string)) found) |
1472 | (while (and (not found) (< i len)) | |
1473 | (let ((char (aref string i))) | |
1474 | (if (and regexp-flag (eq char ?\\)) | |
1475 | (setq quote-flag (not quote-flag)) | |
1476 | (if (and (not quote-flag) (not (eq char (downcase char)))) | |
1477 | (setq found t)))) | |
1478 | (setq i (1+ i))) | |
1479 | (not found))) | |
08200510 | 1480 | |
b78559b0 | 1481 | ;; Portability functions to support various Emacs versions. |
8e1cae6d | 1482 | |
08200510 | 1483 | (defun isearch-char-to-string (c) |
0cabad13 | 1484 | (make-string 1 c)) |
08200510 RS |
1485 | |
1486 | (defun isearch-text-char-description (c) | |
9d78ff8b RS |
1487 | (if (and (integerp c) (or (< c ?\ ) (= c ?\^?))) |
1488 | (text-char-description c) | |
1489 | (isearch-char-to-string c))) | |
08200510 | 1490 | |
bd1bd125 | 1491 | ;; General function to unread characters or events. |
99ae9e9f | 1492 | ;; Also insert them in a keyboard macro being defined. |
8f90f594 | 1493 | (defun isearch-unread (&rest char-or-events) |
99ae9e9f | 1494 | (mapcar 'store-kbd-macro-event char-or-events) |
bd1bd125 RS |
1495 | (setq unread-command-events |
1496 | (append char-or-events unread-command-events))) | |
08200510 RS |
1497 | |
1498 | (defun isearch-last-command-char () | |
1499 | ;; General function to return the last command character. | |
58451992 | 1500 | last-command-char) |
08200510 | 1501 | |
3b1e4dd1 | 1502 | ;;; isearch.el ends here |