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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 RS |
140 | |
141 | (defvar isearch-mode-hook nil | |
142 | "Function(s) to call after starting up an incremental search.") | |
143 | ||
144 | (defvar isearch-mode-end-hook nil | |
145 | "Function(s) to call after terminating an incremental search.") | |
146 | ||
8e1cae6d | 147 | ;;; Search ring. |
8e1cae6d JB |
148 | |
149 | (defvar search-ring nil | |
150 | "List of search string sequences.") | |
08200510 | 151 | (defvar regexp-search-ring nil |
8e1cae6d JB |
152 | "List of regular expression search string sequences.") |
153 | ||
d7fa5aa2 | 154 | (defvar search-ring-max 16 |
8e1cae6d | 155 | "*Maximum length of search ring before oldest elements are thrown away.") |
d7fa5aa2 | 156 | (defvar regexp-search-ring-max 16 |
08200510 | 157 | "*Maximum length of regexp search ring before oldest elements are thrown away.") |
8e1cae6d JB |
158 | |
159 | (defvar search-ring-yank-pointer nil | |
a5dcf63f RS |
160 | "Index in `search-ring' of last string reused. |
161 | nil if none yet.") | |
08200510 | 162 | (defvar regexp-search-ring-yank-pointer nil |
a5dcf63f RS |
163 | "Index in `regexp-search-ring' of last string reused. |
164 | nil if none yet.") | |
8e1cae6d | 165 | |
08200510 RS |
166 | (defvar search-ring-update nil |
167 | "*Non-nil if advancing or retreating in the search ring should cause search. | |
168 | Default value, nil, means edit the string instead.") | |
169 | ||
8e1cae6d JB |
170 | ;;; Define isearch-mode keymap. |
171 | ||
172 | (defvar isearch-mode-map nil | |
173 | "Keymap for isearch-mode.") | |
174 | ||
08200510 RS |
175 | (or isearch-mode-map |
176 | (let* ((i 0) | |
fdf5afa4 | 177 | (map (make-keymap))) |
fcf8ba15 RS |
178 | (or (vectorp (nth 1 map)) |
179 | (error "The initialization of isearch-mode-map must be updated")) | |
180 | ;; Give this map a vector 256 long, for dense binding | |
181 | ;; of a larger range of ordinary characters. | |
182 | (setcar (cdr map) (make-vector 256 nil)) | |
08200510 | 183 | |
ac689515 RS |
184 | ;; Make function keys, etc, exit the search. |
185 | (define-key map [t] 'isearch-other-control-char) | |
08200510 | 186 | ;; Control chars, by default, end isearch mode transparently. |
ac689515 RS |
187 | ;; We need these explicit definitions because, in a dense keymap, |
188 | ;; the binding for t does not affect characters. | |
189 | ;; We use a dense keymap to save space. | |
08200510 RS |
190 | (while (< i ?\ ) |
191 | (define-key map (make-string 1 i) 'isearch-other-control-char) | |
192 | (setq i (1+ i))) | |
193 | ||
8cb2ceaa | 194 | ;; Printing chars extend the search string by default. |
ac689515 | 195 | (setq i ?\ ) |
8d7e4e80 | 196 | (while (< i (length (nth 1 map))) |
8cb2ceaa | 197 | (define-key map (vector i) 'isearch-printing-char) |
08200510 RS |
198 | (setq i (1+ i))) |
199 | ||
ec121bad RS |
200 | ;; To handle local bindings with meta char prefix keys, define |
201 | ;; another full keymap. This must be done for any other prefix | |
202 | ;; keys as well, one full keymap per char of the prefix key. It | |
203 | ;; would be simpler to disable the global keymap, and/or have a | |
204 | ;; default local key binding for any key not otherwise bound. | |
205 | (let ((meta-map (make-sparse-keymap))) | |
206 | (define-key map (char-to-string meta-prefix-char) meta-map) | |
207 | (define-key map [escape] meta-map)) | |
208 | (define-key map (vector meta-prefix-char t) 'isearch-other-meta-char) | |
209 | ||
08200510 RS |
210 | ;; Several non-printing chars change the searching behavior. |
211 | (define-key map "\C-s" 'isearch-repeat-forward) | |
212 | (define-key map "\C-r" 'isearch-repeat-backward) | |
213 | (define-key map "\177" 'isearch-delete-char) | |
214 | (define-key map "\C-g" 'isearch-abort) | |
ec121bad RS |
215 | ;; This assumes \e is the meta-prefix-char. |
216 | (or (= ?\e meta-prefix-char) | |
217 | (error "Inconsistency in isearch.el")) | |
19993c54 RS |
218 | (define-key map "\e\e\e" 'isearch-cancel) |
219 | (define-key map [escape escape escape] 'isearch-cancel) | |
8e1cae6d | 220 | |
08200510 RS |
221 | (define-key map "\C-q" 'isearch-quote-char) |
222 | ||
08200510 RS |
223 | (define-key map "\r" 'isearch-exit) |
224 | (define-key map "\C-j" 'isearch-printing-char) | |
225 | (define-key map "\t" 'isearch-printing-char) | |
226 | (define-key map " " 'isearch-whitespace-chars) | |
8e1cae6d | 227 | |
08200510 RS |
228 | (define-key map "\C-w" 'isearch-yank-word) |
229 | (define-key map "\C-y" 'isearch-yank-line) | |
230 | ||
231 | ;; Define keys for regexp chars * ? |. | |
232 | ;; Nothing special for + because it matches at least once. | |
233 | (define-key map "*" 'isearch-*-char) | |
234 | (define-key map "?" 'isearch-*-char) | |
235 | (define-key map "|" 'isearch-|-char) | |
236 | ||
58f1634a RS |
237 | ;;; Turned off because I find I expect to get the global definition--rms. |
238 | ;;; ;; Instead bind C-h to special help command for isearch-mode. | |
239 | ;;; (define-key map "\C-h" 'isearch-mode-help) | |
08200510 | 240 | |
08200510 RS |
241 | (define-key map "\M-n" 'isearch-ring-advance) |
242 | (define-key map "\M-p" 'isearch-ring-retreat) | |
30d47262 | 243 | (define-key map "\M-y" 'isearch-yank-kill) |
1a3a6707 | 244 | |
08200510 RS |
245 | (define-key map "\M-\t" 'isearch-complete) |
246 | ||
5f48fc17 KH |
247 | ;; Pass frame events transparently so they won't exit the search. |
248 | ;; In particular, if we have more than one display open, then a | |
249 | ;; switch-frame might be generated by someone typing at another keyboard. | |
250 | (define-key map [switch-frame] nil) | |
251 | (define-key map [delete-frame] nil) | |
252 | (define-key map [iconify-frame] nil) | |
253 | (define-key map [make-frame-visible] nil) | |
254 | ||
08200510 RS |
255 | (setq isearch-mode-map map) |
256 | )) | |
8e1cae6d | 257 | |
08200510 RS |
258 | ;; Some bindings you may want to put in your isearch-mode-hook. |
259 | ;; Suggest some alternates... | |
4453091d | 260 | ;; (define-key isearch-mode-map "\C-t" 'isearch-toggle-case-fold) |
08200510 RS |
261 | ;; (define-key isearch-mode-map "\C-t" 'isearch-toggle-regexp) |
262 | ;; (define-key isearch-mode-map "\C-^" 'isearch-edit-string) | |
8e1cae6d | 263 | |
8e1cae6d | 264 | |
08200510 RS |
265 | (defvar minibuffer-local-isearch-map nil |
266 | "Keymap for editing isearch strings in the minibuffer.") | |
8e1cae6d | 267 | |
08200510 RS |
268 | (or minibuffer-local-isearch-map |
269 | (let ((map (copy-keymap minibuffer-local-map))) | |
270 | (define-key map "\r" 'isearch-nonincremental-exit-minibuffer) | |
35a4d143 RS |
271 | (define-key map "\M-n" 'isearch-ring-advance-edit) |
272 | (define-key map "\M-p" 'isearch-ring-retreat-edit) | |
08200510 RS |
273 | (define-key map "\M-\t" 'isearch-complete-edit) |
274 | (define-key map "\C-s" 'isearch-forward-exit-minibuffer) | |
275 | (define-key map "\C-r" 'isearch-reverse-exit-minibuffer) | |
276 | (setq minibuffer-local-isearch-map map) | |
277 | )) | |
8e1cae6d | 278 | |
8e1cae6d | 279 | ;; Internal variables declared globally for byte-compiler. |
08200510 RS |
280 | ;; These are all set with setq while isearching |
281 | ;; and bound locally while editing the search string. | |
282 | ||
283 | (defvar isearch-forward nil) ; Searching in the forward direction. | |
284 | (defvar isearch-regexp nil) ; Searching for a regexp. | |
285 | (defvar isearch-word nil) ; Searching for words. | |
286 | ||
287 | (defvar isearch-cmds nil) ; Stack of search status sets. | |
288 | (defvar isearch-string "") ; The current search string. | |
289 | (defvar isearch-message "") ; text-char-description version of isearch-string | |
290 | ||
291 | (defvar isearch-success t) ; Searching is currently successful. | |
292 | (defvar isearch-invalid-regexp nil) ; Regexp not well formed. | |
c5f6b356 | 293 | (defvar isearch-within-brackets nil) ; Regexp has unclosed [. |
08200510 RS |
294 | (defvar isearch-other-end nil) ; Start (end) of match if forward (backward). |
295 | (defvar isearch-wrapped nil) ; Searching restarted from the top (bottom). | |
8e1cae6d | 296 | (defvar isearch-barrier 0) |
99ae9e9f | 297 | (defvar isearch-just-started nil) |
8e1cae6d | 298 | |
4453091d RS |
299 | ; case-fold-search while searching. |
300 | ; either nil, t, or 'yes. 'yes means the same as t except that mixed | |
301 | ; case in the search string is ignored. | |
302 | (defvar isearch-case-fold-search nil) | |
8e1cae6d JB |
303 | |
304 | (defvar isearch-adjusted nil) | |
305 | (defvar isearch-slow-terminal-mode nil) | |
08200510 RS |
306 | ;;; If t, using a small window. |
307 | (defvar isearch-small-window nil) | |
8e1cae6d | 308 | (defvar isearch-opoint 0) |
08200510 RS |
309 | ;;; The window configuration active at the beginning of the search. |
310 | (defvar isearch-window-configuration nil) | |
8e1cae6d | 311 | |
08200510 RS |
312 | ;; Flag to indicate a yank occurred, so don't move the cursor. |
313 | (defvar isearch-yank-flag nil) | |
8e1cae6d | 314 | |
08200510 RS |
315 | ;;; A function to be called after each input character is processed. |
316 | ;;; (It is not called after characters that exit the search.) | |
317 | ;;; It is only set from an optional argument to `isearch-mode'. | |
318 | (defvar isearch-op-fun nil) | |
8e1cae6d | 319 | |
08200510 RS |
320 | ;;; Is isearch-mode in a recursive edit for modal searching. |
321 | (defvar isearch-recursive-edit nil) | |
8e1cae6d | 322 | |
08200510 RS |
323 | ;;; Should isearch be terminated after doing one search? |
324 | (defvar isearch-nonincremental nil) | |
325 | ||
326 | ;; New value of isearch-forward after isearch-edit-string. | |
327 | (defvar isearch-new-forward nil) | |
8e1cae6d | 328 | |
8e1cae6d | 329 | |
8e1cae6d JB |
330 | ;; Minor-mode-alist changes - kind of redundant with the |
331 | ;; echo area, but if isearching in multiple windows, it can be useful. | |
332 | ||
333 | (or (assq 'isearch-mode minor-mode-alist) | |
334 | (nconc minor-mode-alist | |
335 | (list '(isearch-mode isearch-mode)))) | |
336 | ||
08200510 | 337 | (defvar isearch-mode nil) ;; Name of the minor mode, if non-nil. |
8e1cae6d JB |
338 | (make-variable-buffer-local 'isearch-mode) |
339 | ||
fdf5afa4 RS |
340 | (define-key global-map "\C-s" 'isearch-forward) |
341 | (define-key esc-map "\C-s" 'isearch-forward-regexp) | |
342 | (define-key global-map "\C-r" 'isearch-backward) | |
343 | (define-key esc-map "\C-r" 'isearch-backward-regexp) | |
344 | ||
8e1cae6d | 345 | ;;; Entry points to isearch-mode. |
08200510 | 346 | ;;; These four functions should replace those in loaddefs.el |
b457cc3b | 347 | ;;; An alternative is to defalias isearch-forward etc to isearch-mode, |
08200510 | 348 | ;;; and look at this-command to set the options accordingly. |
8e1cae6d | 349 | |
eceee2c0 | 350 | (defun isearch-forward (&optional regexp-p no-recursive-edit) |
8e1cae6d JB |
351 | "\ |
352 | Do incremental search forward. | |
08200510 RS |
353 | With a prefix argument, do an incremental regular expression search instead. |
354 | \\<isearch-mode-map> | |
8e1cae6d | 355 | As you type characters, they add to the search string and are found. |
08200510 | 356 | The following non-printing keys are bound in `isearch-mode-map'. |
8e1cae6d | 357 | |
08200510 | 358 | Type \\[isearch-delete-char] to cancel characters from end of search string. |
8e1cae6d | 359 | Type \\[isearch-exit] to exit, leaving point at location found. |
08200510 RS |
360 | Type LFD (C-j) to match end of line. |
361 | Type \\[isearch-repeat-forward] to search again forward,\ | |
362 | \\[isearch-repeat-backward] to search again backward. | |
363 | Type \\[isearch-yank-word] to yank word from buffer onto end of search\ | |
364 | string and search for it. | |
365 | Type \\[isearch-yank-line] to yank rest of line onto end of search string\ | |
366 | and search for it. | |
de40ed89 | 367 | Type \\[isearch-yank-kill] to yank the last string of killed text. |
8e1cae6d | 368 | Type \\[isearch-quote-char] to quote control character to search for it. |
08200510 RS |
369 | \\[isearch-abort] while searching or when search has failed cancels input\ |
370 | back to what has | |
371 | been found successfully. | |
372 | \\[isearch-abort] when search is successful aborts and moves point to\ | |
373 | starting point. | |
8e1cae6d JB |
374 | |
375 | Also supported is a search ring of the previous 16 search strings. | |
376 | Type \\[isearch-ring-advance] to search for the next item in the search ring. | |
08200510 RS |
377 | Type \\[isearch-ring-retreat] to search for the previous item in the search\ |
378 | ring. | |
379 | Type \\[isearch-complete] to complete the search string using the search ring. | |
8e1cae6d | 380 | |
08200510 RS |
381 | The above keys, bound in `isearch-mode-map', are often controlled by |
382 | options; do M-x apropos on search-.* to find them. | |
8e1cae6d | 383 | Other control and meta characters terminate the search |
08200510 | 384 | and are then executed normally (depending on `search-exit-option'). |
fd49e05c | 385 | Likewise for function keys and mouse button events. |
8e1cae6d | 386 | |
08200510 RS |
387 | If this function is called non-interactively, it does not return to |
388 | the calling function until the search is done." | |
8e1cae6d | 389 | |
eceee2c0 | 390 | (interactive "P\np") |
4ae7d00a | 391 | (isearch-mode t (not (null regexp-p)) nil (not no-recursive-edit))) |
8e1cae6d | 392 | |
eceee2c0 | 393 | (defun isearch-forward-regexp (&optional not-regexp no-recursive-edit) |
8e1cae6d JB |
394 | "\ |
395 | Do incremental search forward for regular expression. | |
08200510 | 396 | With a prefix argument, do a regular string search instead. |
8e1cae6d JB |
397 | Like ordinary incremental search except that your input |
398 | is treated as a regexp. See \\[isearch-forward] for more info." | |
eceee2c0 | 399 | (interactive "P\np") |
4ae7d00a | 400 | (isearch-mode t (null not-regexp) nil (not no-recursive-edit))) |
8e1cae6d | 401 | |
eceee2c0 | 402 | (defun isearch-backward (&optional regexp-p no-recursive-edit) |
8e1cae6d JB |
403 | "\ |
404 | Do incremental search backward. | |
08200510 | 405 | With a prefix argument, do a regular expression search instead. |
8e1cae6d | 406 | See \\[isearch-forward] for more information." |
eceee2c0 | 407 | (interactive "P\np") |
4ae7d00a | 408 | (isearch-mode nil (not (null regexp-p)) nil (not no-recursive-edit))) |
8e1cae6d | 409 | |
eceee2c0 | 410 | (defun isearch-backward-regexp (&optional not-regexp no-recursive-edit) |
8e1cae6d JB |
411 | "\ |
412 | Do incremental search backward for regular expression. | |
08200510 | 413 | With a prefix argument, do a regular string search instead. |
8e1cae6d JB |
414 | Like ordinary incremental search except that your input |
415 | is treated as a regexp. See \\[isearch-forward] for more info." | |
eceee2c0 | 416 | (interactive "P\np") |
4ae7d00a | 417 | (isearch-mode nil (null not-regexp) nil (not no-recursive-edit))) |
08200510 RS |
418 | |
419 | ||
420 | (defun isearch-mode-help () | |
421 | (interactive) | |
422 | (describe-function 'isearch-forward) | |
423 | (isearch-update)) | |
8e1cae6d JB |
424 | |
425 | \f | |
8e1cae6d JB |
426 | ;; isearch-mode only sets up incremental search for the minor mode. |
427 | ;; All the work is done by the isearch-mode commands. | |
428 | ||
08200510 | 429 | ;; Not used yet: |
d7fa5aa2 | 430 | ;;(defvar isearch-commands '(isearch-forward isearch-backward |
08200510 RS |
431 | ;; isearch-forward-regexp isearch-backward-regexp) |
432 | ;; "List of commands for which isearch-mode does not recursive-edit.") | |
433 | ||
434 | ||
435 | (defun isearch-mode (forward &optional regexp op-fun recursive-edit word-p) | |
79ce455d RS |
436 | "Start isearch minor mode. Called by `isearch-forward', etc. |
437 | ||
438 | \\{isearch-mode-map}" | |
8e1cae6d JB |
439 | |
440 | ;; Initialize global vars. | |
441 | (setq isearch-forward forward | |
442 | isearch-regexp regexp | |
08200510 | 443 | isearch-word word-p |
8e1cae6d JB |
444 | isearch-op-fun op-fun |
445 | isearch-case-fold-search case-fold-search | |
446 | isearch-string "" | |
447 | isearch-message "" | |
448 | isearch-cmds nil | |
449 | isearch-success t | |
450 | isearch-wrapped nil | |
451 | isearch-barrier (point) | |
452 | isearch-adjusted nil | |
453 | isearch-yank-flag nil | |
454 | isearch-invalid-regexp nil | |
c5f6b356 | 455 | isearch-within-brackets nil |
0cabad13 | 456 | isearch-slow-terminal-mode (and (<= baud-rate search-slow-speed) |
8e1cae6d JB |
457 | (> (window-height) |
458 | (* 4 search-slow-window-lines))) | |
459 | isearch-other-end nil | |
460 | isearch-small-window nil | |
99ae9e9f | 461 | isearch-just-started t |
8e1cae6d | 462 | |
8e1cae6d | 463 | isearch-opoint (point) |
a5dcf63f RS |
464 | search-ring-yank-pointer nil |
465 | regexp-search-ring-yank-pointer nil) | |
99ae9e9f | 466 | (looking-at "") |
292a8dff RS |
467 | (setq isearch-window-configuration |
468 | (if isearch-slow-terminal-mode (current-window-configuration) nil)) | |
70418205 | 469 | |
18ce7555 RS |
470 | ;; Maybe make minibuffer frame visible and/or raise it. |
471 | (let ((frame (window-frame (minibuffer-window)))) | |
472 | (if (not (memq (frame-live-p frame) '(nil t))) | |
473 | (progn | |
474 | (make-frame-visible frame) | |
475 | (if minibuffer-auto-raise | |
476 | (raise-frame frame))))) | |
477 | ||
8e1cae6d | 478 | (setq isearch-mode " Isearch") ;; forward? regexp? |
1cd3732c | 479 | (force-mode-line-update) |
8e1cae6d JB |
480 | |
481 | (isearch-push-state) | |
482 | ||
c7955222 | 483 | (setq overriding-terminal-local-map isearch-mode-map) |
8e1cae6d JB |
484 | (isearch-update) |
485 | (run-hooks 'isearch-mode-hook) | |
08200510 | 486 | |
bfe2d334 | 487 | (add-hook 'mouse-leave-buffer-hook 'isearch-done) |
6e5cd0ae | 488 | |
08200510 RS |
489 | ;; isearch-mode can be made modal (in the sense of not returning to |
490 | ;; the calling function until searching is completed) by entering | |
491 | ;; a recursive-edit and exiting it when done isearching. | |
130bf67c RS |
492 | (if recursive-edit |
493 | (let ((isearch-recursive-edit t)) | |
494 | (recursive-edit))) | |
0daa17f3 | 495 | isearch-success) |
8e1cae6d JB |
496 | |
497 | ||
8e1cae6d JB |
498 | ;; Some high level utilities. Others below. |
499 | ||
500 | (defun isearch-update () | |
501 | ;; Called after each command to update the display. | |
58451992 | 502 | (if (null unread-command-events) |
8e1cae6d JB |
503 | (progn |
504 | (if (not (input-pending-p)) | |
505 | (isearch-message)) | |
506 | (if (and isearch-slow-terminal-mode | |
507 | (not (or isearch-small-window | |
508 | (pos-visible-in-window-p)))) | |
08200510 | 509 | (let ((found-point (point))) |
8e1cae6d | 510 | (setq isearch-small-window t) |
8e1cae6d JB |
511 | (move-to-window-line 0) |
512 | (let ((window-min-height 1)) | |
513 | (split-window nil (if (< search-slow-window-lines 0) | |
514 | (1+ (- search-slow-window-lines)) | |
515 | (- (window-height) | |
516 | (1+ search-slow-window-lines))))) | |
517 | (if (< search-slow-window-lines 0) | |
518 | (progn (vertical-motion (- 1 search-slow-window-lines)) | |
519 | (set-window-start (next-window) (point)) | |
520 | (set-window-hscroll (next-window) | |
521 | (window-hscroll)) | |
522 | (set-window-hscroll (selected-window) 0)) | |
523 | (other-window 1)) | |
08200510 RS |
524 | (goto-char found-point))) |
525 | (if isearch-other-end | |
526 | (if (< isearch-other-end (point)) ; isearch-forward? | |
527 | (isearch-highlight isearch-other-end (point)) | |
99afb671 RS |
528 | (isearch-highlight (point) isearch-other-end)) |
529 | (isearch-dehighlight nil)) | |
08200510 | 530 | )) |
8e1cae6d JB |
531 | (setq ;; quit-flag nil not for isearch-mode |
532 | isearch-adjusted nil | |
533 | isearch-yank-flag nil) | |
534 | ) | |
535 | ||
0daa17f3 | 536 | (defun isearch-done (&optional nopush edit) |
bfe2d334 | 537 | (remove-hook 'mouse-leave-buffer-hook 'isearch-done) |
8e1cae6d | 538 | ;; Called by all commands that terminate isearch-mode. |
35a4d143 | 539 | ;; If NOPUSH is non-nil, we don't push the string on the search ring. |
c7955222 | 540 | (setq overriding-terminal-local-map nil) |
08200510 RS |
541 | ;; (setq pre-command-hook isearch-old-pre-command-hook) ; for lemacs |
542 | (isearch-dehighlight t) | |
543 | (let ((found-start (window-start (selected-window))) | |
544 | (found-point (point))) | |
70418205 RS |
545 | (if isearch-window-configuration |
546 | (set-window-configuration isearch-window-configuration)) | |
08200510 | 547 | |
d49b6338 RS |
548 | (if isearch-small-window |
549 | (goto-char found-point) | |
550 | ;; Exiting the save-window-excursion clobbers window-start; restore it. | |
9821535a | 551 | (set-window-start (selected-window) found-start t)) |
d49b6338 | 552 | |
08200510 RS |
553 | ;; If there was movement, mark the starting position. |
554 | ;; Maybe should test difference between and set mark iff > threshold. | |
555 | (if (/= (point) isearch-opoint) | |
9821535a RS |
556 | (or (and transient-mark-mode mark-active) |
557 | (progn | |
558 | (push-mark isearch-opoint t) | |
f3acf6f5 | 559 | (or executing-kbd-macro (> (minibuffer-depth) 0) |
9821535a | 560 | (message "Mark saved where search started")))))) |
08200510 RS |
561 | |
562 | (setq isearch-mode nil) | |
1cd3732c | 563 | (force-mode-line-update) |
8e1cae6d | 564 | |
35a4d143 | 565 | (if (and (> (length isearch-string) 0) (not nopush)) |
8e1cae6d | 566 | ;; Update the ring data. |
73d2bf95 | 567 | (isearch-update-ring isearch-string isearch-regexp)) |
8e1cae6d | 568 | |
8e1cae6d | 569 | (run-hooks 'isearch-mode-end-hook) |
0daa17f3 | 570 | (and (not edit) isearch-recursive-edit (exit-recursive-edit))) |
08200510 | 571 | |
73d2bf95 RS |
572 | (defun isearch-update-ring (string &optional regexp) |
573 | "Add STRING to the beginning of the search ring. | |
574 | REGEXP says which ring to use." | |
575 | (if regexp | |
576 | (if (or (null regexp-search-ring) | |
fd89878d | 577 | (not (string= string (car regexp-search-ring)))) |
73d2bf95 RS |
578 | (progn |
579 | (setq regexp-search-ring | |
fd89878d | 580 | (cons string regexp-search-ring)) |
73d2bf95 RS |
581 | (if (> (length regexp-search-ring) regexp-search-ring-max) |
582 | (setcdr (nthcdr (1- search-ring-max) regexp-search-ring) | |
583 | nil)))) | |
584 | (if (or (null search-ring) | |
fd89878d | 585 | (not (string= string (car search-ring)))) |
73d2bf95 | 586 | (progn |
fd89878d | 587 | (setq search-ring (cons string search-ring)) |
73d2bf95 RS |
588 | (if (> (length search-ring) search-ring-max) |
589 | (setcdr (nthcdr (1- search-ring-max) search-ring) nil)))))) | |
590 | ||
08200510 | 591 | ;;; Switching buffers should first terminate isearch-mode. |
eb8c3be9 | 592 | ;;; This is done quite differently for each variant of emacs. |
08200510 RS |
593 | ;;; For lemacs, see Exiting in lemacs below |
594 | ||
595 | ;; For Emacs 19, the frame switch event is handled. | |
596 | (defun isearch-switch-frame-handler () | |
597 | (interactive) ;; Is this necessary? | |
598 | ;; First terminate isearch-mode. | |
599 | (isearch-done) | |
dba1ec55 | 600 | (handle-switch-frame (car (cdr (isearch-last-command-char))))) |
08200510 | 601 | |
8e1cae6d | 602 | \f |
8e1cae6d JB |
603 | ;; Commands active while inside of the isearch minor mode. |
604 | ||
605 | (defun isearch-exit () | |
606 | "Exit search normally. | |
607 | However, if this is the first command after starting incremental | |
608 | search and `search-nonincremental-instead' is non-nil, do a | |
08200510 | 609 | nonincremental search instead via `isearch-edit-string'." |
8e1cae6d JB |
610 | (interactive) |
611 | (if (and search-nonincremental-instead | |
612 | (= 0 (length isearch-string))) | |
08200510 RS |
613 | (let ((isearch-nonincremental t)) |
614 | (isearch-edit-string))) | |
8e1cae6d JB |
615 | (isearch-done)) |
616 | ||
617 | ||
618 | (defun isearch-edit-string () | |
08200510 RS |
619 | "Edit the search string in the minibuffer. |
620 | The following additional command keys are active while editing. | |
621 | \\<minibuffer-local-isearch-map> | |
622 | \\[exit-minibuffer] to resume incremental searching with the edited string. | |
623 | \\[isearch-nonincremental-exit-minibuffer] to do one nonincremental search. | |
624 | \\[isearch-forward-exit-minibuffer] to resume isearching forward. | |
8eb40e74 | 625 | \\[isearch-reverse-exit-minibuffer] to resume isearching backward. |
08200510 | 626 | \\[isearch-ring-advance-edit] to replace the search string with the next item in the search ring. |
eb8c3be9 | 627 | \\[isearch-ring-retreat-edit] to replace the search string with the previous item in the search ring. |
08200510 | 628 | \\[isearch-complete-edit] to complete the search string using the search ring. |
8eb40e74 | 629 | \\<isearch-mode-map> |
08200510 RS |
630 | If first char entered is \\[isearch-yank-word], then do word search instead." |
631 | ||
632 | ;; This code is very hairy for several reasons, explained in the code. | |
633 | ;; Mainly, isearch-mode must be terminated while editing and then restarted. | |
634 | ;; If there were a way to catch any change of buffer from the minibuffer, | |
635 | ;; this could be simplified greatly. | |
eb8c3be9 | 636 | ;; Editing doesn't back up the search point. Should it? |
8e1cae6d | 637 | (interactive) |
08200510 | 638 | (condition-case err |
a9a5a9fa | 639 | (let ((isearch-nonincremental isearch-nonincremental) |
08200510 RS |
640 | |
641 | ;; Locally bind all isearch global variables to protect them | |
642 | ;; from recursive isearching. | |
643 | ;; isearch-string -message and -forward are not bound | |
644 | ;; so they may be changed. Instead, save the values. | |
645 | (isearch-new-string isearch-string) | |
646 | (isearch-new-message isearch-message) | |
647 | (isearch-new-forward isearch-forward) | |
648 | (isearch-new-word isearch-word) | |
649 | ||
650 | (isearch-regexp isearch-regexp) | |
651 | (isearch-op-fun isearch-op-fun) | |
652 | (isearch-cmds isearch-cmds) | |
653 | (isearch-success isearch-success) | |
654 | (isearch-wrapped isearch-wrapped) | |
655 | (isearch-barrier isearch-barrier) | |
656 | (isearch-adjusted isearch-adjusted) | |
657 | (isearch-yank-flag isearch-yank-flag) | |
658 | (isearch-invalid-regexp isearch-invalid-regexp) | |
c5f6b356 | 659 | (isearch-within-brackets isearch-within-brackets) |
0f09b616 KH |
660 | ;;; Don't bind this. We want isearch-search, below, to set it. |
661 | ;;; And the old value won't matter after that. | |
662 | ;;; (isearch-other-end isearch-other-end) | |
663 | ;;; Perhaps some of these other variables should be bound for a | |
664 | ;;; shorter period, ending before the next isearch-search. | |
665 | ;;; But there doesn't seem to be a real bug, so let's not risk it now. | |
08200510 RS |
666 | (isearch-opoint isearch-opoint) |
667 | (isearch-slow-terminal-mode isearch-slow-terminal-mode) | |
668 | (isearch-small-window isearch-small-window) | |
669 | (isearch-recursive-edit isearch-recursive-edit) | |
670 | ;; Save current configuration so we can restore it here. | |
671 | (isearch-window-configuration (current-window-configuration)) | |
672 | ) | |
673 | ||
674 | ;; Actually terminate isearching until editing is done. | |
675 | ;; This is so that the user can do anything without failure, | |
676 | ;; like switch buffers and start another isearch, and return. | |
677 | (condition-case err | |
0daa17f3 | 678 | (isearch-done t t) |
08200510 RS |
679 | (exit nil)) ; was recursive editing |
680 | ||
681 | (isearch-message) ;; for read-char | |
682 | (unwind-protect | |
683 | (let* (;; Why does following read-char echo? | |
684 | ;;(echo-keystrokes 0) ;; not needed with above message | |
d94307ee | 685 | (e (let ((cursor-in-echo-area t)) |
235beb32 | 686 | (read-event))) |
08200510 RS |
687 | ;; Binding minibuffer-history-symbol to nil is a work-around |
688 | ;; for some incompatibility with gmhist. | |
a56687f1 KH |
689 | (minibuffer-history-symbol) |
690 | (message-log-max nil)) | |
08200510 RS |
691 | ;; If the first character the user types when we prompt them |
692 | ;; for a string is the yank-word character, then go into | |
693 | ;; word-search mode. Otherwise unread that character and | |
694 | ;; read a key the normal way. | |
695 | ;; Word search does not apply (yet) to regexp searches, | |
696 | ;; no check is made here. | |
697 | (message (isearch-message-prefix nil nil t)) | |
698 | (if (eq 'isearch-yank-word | |
235beb32 | 699 | (lookup-key isearch-mode-map (vector e))) |
2ff20b7e | 700 | (setq isearch-word t;; so message-prefix is right |
08200510 | 701 | isearch-new-word t) |
d4866ec3 | 702 | (cancel-kbd-macro-events) |
08200510 | 703 | (isearch-unread e)) |
a5dcf63f RS |
704 | (setq cursor-in-echo-area nil) |
705 | (setq isearch-new-string | |
35a4d143 | 706 | (let (junk-ring) |
71e2ab54 | 707 | (read-from-minibuffer |
2ff20b7e | 708 | (isearch-message-prefix nil nil isearch-nonincremental) |
71e2ab54 RS |
709 | isearch-string |
710 | minibuffer-local-isearch-map nil | |
711 | 'junk-ring)) | |
7e846b10 RS |
712 | isearch-new-message |
713 | (mapconcat 'isearch-text-char-description | |
714 | isearch-new-string ""))) | |
08200510 RS |
715 | ;; Always resume isearching by restarting it. |
716 | (isearch-mode isearch-forward | |
717 | isearch-regexp | |
718 | isearch-op-fun | |
0daa17f3 | 719 | nil |
08200510 RS |
720 | isearch-word) |
721 | ||
722 | ;; Copy new local values to isearch globals | |
723 | (setq isearch-string isearch-new-string | |
724 | isearch-message isearch-new-message | |
725 | isearch-forward isearch-new-forward | |
726 | isearch-word isearch-new-word)) | |
727 | ||
728 | ;; Empty isearch-string means use default. | |
729 | (if (= 0 (length isearch-string)) | |
f3acf6f5 RS |
730 | (setq isearch-string (or (car (if isearch-regexp |
731 | regexp-search-ring | |
732 | search-ring)) | |
733 | "")) | |
a8f783b2 RS |
734 | ;; This used to set the last search string, |
735 | ;; but I think it is not right to do that here. | |
736 | ;; Only the string actually used should be saved. | |
737 | ) | |
08200510 RS |
738 | |
739 | ;; Reinvoke the pending search. | |
740 | (isearch-push-state) | |
741 | (isearch-search) | |
742 | (isearch-update) | |
743 | (if isearch-nonincremental | |
744 | (progn | |
745 | ;; (sit-for 1) ;; needed if isearch-done does: (message "") | |
746 | (isearch-done)))) | |
8e1cae6d | 747 | |
08200510 RS |
748 | (quit ; handle abort-recursive-edit |
749 | (isearch-abort) ;; outside of let to restore outside global values | |
750 | ))) | |
751 | ||
752 | (defun isearch-nonincremental-exit-minibuffer () | |
753 | (interactive) | |
754 | (setq isearch-nonincremental t) | |
755 | (exit-minibuffer)) | |
756 | ||
757 | (defun isearch-forward-exit-minibuffer () | |
758 | (interactive) | |
759 | (setq isearch-new-forward t) | |
760 | (exit-minibuffer)) | |
8e1cae6d | 761 | |
08200510 | 762 | (defun isearch-reverse-exit-minibuffer () |
8e1cae6d | 763 | (interactive) |
08200510 RS |
764 | (setq isearch-new-forward nil) |
765 | (exit-minibuffer)) | |
766 | ||
19993c54 RS |
767 | (defun isearch-cancel () |
768 | "Terminate the search and go back to the starting point." | |
769 | (interactive) | |
770 | (goto-char isearch-opoint) | |
771 | (isearch-done t) | |
772 | (signal 'quit nil)) ; and pass on quit signal | |
08200510 RS |
773 | |
774 | (defun isearch-abort () | |
b7852303 | 775 | "Abort incremental search mode if searching is successful, signaling quit. |
08200510 | 776 | Otherwise, revert to previous successful search and continue searching. |
b7852303 | 777 | Use `isearch-exit' to quit without signaling." |
08200510 | 778 | (interactive) |
eb8c3be9 | 779 | ;; (ding) signal instead below, if quitting |
8e1cae6d JB |
780 | (discard-input) |
781 | (if isearch-success | |
782 | ;; If search is successful, move back to starting point | |
783 | ;; and really do quit. | |
784 | (progn (goto-char isearch-opoint) | |
509ed182 | 785 | (setq isearch-success nil) |
35a4d143 | 786 | (isearch-done t) ; exit isearch |
a5dcf63f | 787 | (signal 'quit nil)) ; and pass on quit signal |
925a67ca RS |
788 | ;; If search is failing, or has an incomplete regexp, |
789 | ;; rub out until it is once more successful. | |
790 | (while (or (not isearch-success) isearch-invalid-regexp) | |
791 | (isearch-pop-state)) | |
8e1cae6d JB |
792 | (isearch-update))) |
793 | ||
8e1cae6d JB |
794 | (defun isearch-repeat (direction) |
795 | ;; Utility for isearch-repeat-forward and -backward. | |
796 | (if (eq isearch-forward (eq direction 'forward)) | |
797 | ;; C-s in forward or C-r in reverse. | |
798 | (if (equal isearch-string "") | |
799 | ;; If search string is empty, use last one. | |
800 | (setq isearch-string | |
8e1cae6d | 801 | (or (if isearch-regexp |
a5dcf63f RS |
802 | (car regexp-search-ring) |
803 | (car search-ring)) | |
8e1cae6d JB |
804 | "") |
805 | isearch-message | |
08200510 | 806 | (mapconcat 'isearch-text-char-description |
8e1cae6d JB |
807 | isearch-string "")) |
808 | ;; If already have what to search for, repeat it. | |
809 | (or isearch-success | |
810 | (progn | |
8e1cae6d JB |
811 | (goto-char (if isearch-forward (point-min) (point-max))) |
812 | (setq isearch-wrapped t)))) | |
813 | ;; C-s in reverse or C-r in forward, change direction. | |
814 | (setq isearch-forward (not isearch-forward))) | |
815 | ||
816 | (setq isearch-barrier (point)) ; For subsequent \| if regexp. | |
6fefdc4b RS |
817 | |
818 | (if (equal isearch-string "") | |
819 | (setq isearch-success t) | |
99ae9e9f KH |
820 | (if (and isearch-success (equal (match-end 0) (match-beginning 0)) |
821 | (not isearch-just-started)) | |
8e1cae6d JB |
822 | ;; If repeating a search that found |
823 | ;; an empty string, ensure we advance. | |
6fefdc4b RS |
824 | (if (if isearch-forward (eobp) (bobp)) |
825 | ;; If there's nowhere to advance to, fail (and wrap next time). | |
826 | (progn | |
827 | (setq isearch-success nil) | |
828 | (ding)) | |
829 | (forward-char (if isearch-forward 1 -1)) | |
830 | (isearch-search)) | |
831 | (isearch-search))) | |
832 | ||
8e1cae6d JB |
833 | (isearch-push-state) |
834 | (isearch-update)) | |
835 | ||
836 | (defun isearch-repeat-forward () | |
837 | "Repeat incremental search forwards." | |
838 | (interactive) | |
839 | (isearch-repeat 'forward)) | |
840 | ||
841 | (defun isearch-repeat-backward () | |
842 | "Repeat incremental search backwards." | |
843 | (interactive) | |
844 | (isearch-repeat 'backward)) | |
845 | ||
846 | (defun isearch-toggle-regexp () | |
847 | "Toggle regexp searching on or off." | |
848 | ;; The status stack is left unchanged. | |
849 | (interactive) | |
850 | (setq isearch-regexp (not isearch-regexp)) | |
08200510 | 851 | (if isearch-regexp (setq isearch-word nil)) |
8e1cae6d JB |
852 | (isearch-update)) |
853 | ||
4453091d RS |
854 | (defun isearch-toggle-case-fold () |
855 | "Toggle case folding in searching on or off." | |
856 | (interactive) | |
857 | (setq isearch-case-fold-search | |
858 | (if isearch-case-fold-search nil 'yes)) | |
a56687f1 KH |
859 | (let ((message-log-max nil)) |
860 | (message "%s%s [case %ssensitive]" | |
861 | (isearch-message-prefix nil nil isearch-nonincremental) | |
862 | isearch-message | |
863 | (if isearch-case-fold-search "in" ""))) | |
4453091d RS |
864 | (setq isearch-adjusted t) |
865 | (sit-for 1) | |
866 | (isearch-update)) | |
867 | ||
8e1cae6d JB |
868 | (defun isearch-delete-char () |
869 | "Discard last input item and move point back. | |
870 | If no previous match was done, just beep." | |
871 | (interactive) | |
872 | (if (null (cdr isearch-cmds)) | |
873 | (ding) | |
874 | (isearch-pop-state)) | |
875 | (isearch-update)) | |
876 | ||
877 | ||
878 | (defun isearch-yank (chunk) | |
879 | ;; Helper for isearch-yank-word and isearch-yank-line | |
30d47262 RS |
880 | ;; CHUNK should be word, line or kill. |
881 | (let ((string (cond | |
882 | ((eq chunk 'kill) | |
883 | (current-kill 0)) | |
884 | (t | |
885 | (save-excursion | |
886 | (and (not isearch-forward) isearch-other-end | |
887 | (goto-char isearch-other-end)) | |
888 | (buffer-substring | |
889 | (point) | |
890 | (save-excursion | |
891 | (cond | |
892 | ((eq chunk 'word) | |
893 | (forward-word 1)) | |
894 | ((eq chunk 'line) | |
895 | (end-of-line))) | |
896 | (point)))))))) | |
08200510 RS |
897 | ;; Downcase the string if not supposed to case-fold yanked strings. |
898 | (if (and isearch-case-fold-search | |
fdf5afa4 | 899 | (eq 'not-yanks search-upper-case)) |
08200510 RS |
900 | (setq string (downcase string))) |
901 | (if isearch-regexp (setq string (regexp-quote string))) | |
902 | (setq isearch-string (concat isearch-string string) | |
8e1cae6d JB |
903 | isearch-message |
904 | (concat isearch-message | |
08200510 RS |
905 | (mapconcat 'isearch-text-char-description |
906 | string "")) | |
8e1cae6d JB |
907 | ;; Don't move cursor in reverse search. |
908 | isearch-yank-flag t)) | |
909 | (isearch-search-and-update)) | |
910 | ||
30d47262 RS |
911 | (defun isearch-yank-kill () |
912 | "Pull string from kill ring into search string." | |
913 | (interactive) | |
914 | (isearch-yank 'kill)) | |
8e1cae6d JB |
915 | |
916 | (defun isearch-yank-word () | |
917 | "Pull next word from buffer into search string." | |
918 | (interactive) | |
919 | (isearch-yank 'word)) | |
920 | ||
921 | (defun isearch-yank-line () | |
922 | "Pull rest of line from buffer into search string." | |
923 | (interactive) | |
924 | (isearch-yank 'line)) | |
925 | ||
926 | ||
927 | (defun isearch-search-and-update () | |
928 | ;; Do the search and update the display. | |
929 | (if (and (not isearch-success) | |
930 | ;; unsuccessful regexp search may become | |
931 | ;; successful by addition of characters which | |
932 | ;; make isearch-string valid | |
933 | (not isearch-regexp)) | |
934 | nil | |
935 | ;; In reverse search, adding stuff at | |
936 | ;; the end may cause zero or many more chars to be | |
937 | ;; matched, in the string following point. | |
938 | ;; Allow all those possibilities without moving point as | |
939 | ;; long as the match does not extend past search origin. | |
940 | (if (and (not isearch-forward) (not isearch-adjusted) | |
941 | (condition-case () | |
99ae9e9f KH |
942 | (let ((case-fold-search isearch-case-fold-search)) |
943 | (looking-at (if isearch-regexp isearch-string | |
944 | (regexp-quote isearch-string)))) | |
8e1cae6d JB |
945 | (error nil)) |
946 | (or isearch-yank-flag | |
947 | (<= (match-end 0) | |
948 | (min isearch-opoint isearch-barrier)))) | |
949 | (setq isearch-success t | |
950 | isearch-invalid-regexp nil | |
c5f6b356 | 951 | isearch-within-brackets nil |
8e1cae6d JB |
952 | isearch-other-end (match-end 0)) |
953 | ;; Not regexp, not reverse, or no match at point. | |
954 | (if (and isearch-other-end (not isearch-adjusted)) | |
955 | (goto-char (if isearch-forward isearch-other-end | |
956 | (min isearch-opoint | |
957 | isearch-barrier | |
958 | (1+ isearch-other-end))))) | |
959 | (isearch-search) | |
960 | )) | |
961 | (isearch-push-state) | |
962 | (if isearch-op-fun (funcall isearch-op-fun)) | |
963 | (isearch-update)) | |
964 | ||
965 | ||
966 | ;; *, ?, and | chars can make a regexp more liberal. | |
08200510 | 967 | ;; They can make a regexp match sooner or make it succeed instead of failing. |
8e1cae6d JB |
968 | ;; So go back to place last successful search started |
969 | ;; or to the last ^S/^R (barrier), whichever is nearer. | |
08200510 | 970 | ;; + needs no special handling because the string must match at least once. |
8e1cae6d JB |
971 | |
972 | (defun isearch-*-char () | |
973 | "Handle * and ? specially in regexps." | |
974 | (interactive) | |
975 | (if isearch-regexp | |
976 | ||
977 | (progn | |
978 | (setq isearch-adjusted t) | |
149d4fe5 RS |
979 | ;; Get the isearch-other-end from before the last search. |
980 | ;; We want to start from there, | |
981 | ;; so that we don't retreat farther than that. | |
982 | ;; (car isearch-cmds) is after last search; | |
983 | ;; (car (cdr isearch-cmds)) is from before it. | |
984 | (let ((cs (nth 5 (car (cdr isearch-cmds))))) | |
8e1cae6d JB |
985 | (setq cs (or cs isearch-barrier)) |
986 | (goto-char | |
987 | (if isearch-forward | |
988 | (max cs isearch-barrier) | |
989 | (min cs isearch-barrier)))))) | |
08200510 | 990 | (isearch-process-search-char (isearch-last-command-char))) |
8e1cae6d JB |
991 | |
992 | ||
8e1cae6d JB |
993 | (defun isearch-|-char () |
994 | "If in regexp search, jump to the barrier." | |
995 | (interactive) | |
996 | (if isearch-regexp | |
997 | (progn | |
998 | (setq isearch-adjusted t) | |
999 | (goto-char isearch-barrier))) | |
08200510 | 1000 | (isearch-process-search-char (isearch-last-command-char))) |
8e1cae6d JB |
1001 | |
1002 | ||
b457cc3b | 1003 | (defalias 'isearch-other-control-char 'isearch-other-meta-char) |
8e1cae6d JB |
1004 | |
1005 | (defun isearch-other-meta-char () | |
8f90f594 | 1006 | "Exit the search normally and reread this key sequence. |
35a4d143 RS |
1007 | But only if `search-exit-option' is non-nil, the default. |
1008 | If it is the symbol `edit', the search string is edited in the minibuffer | |
1009 | and the meta character is unread so that it applies to editing the string." | |
8e1cae6d | 1010 | (interactive) |
c6431f12 KH |
1011 | (let* ((key (this-command-keys)) |
1012 | (main-event (aref key 0)) | |
1013 | (keylist (listify-key-sequence key))) | |
24b5caec | 1014 | (cond ((and (= (length key) 1) |
d94eb6eb | 1015 | (let ((lookup (lookup-key function-key-map key))) |
3f866b53 KH |
1016 | (not (or (null lookup) (integerp lookup) |
1017 | (keymapp lookup))))) | |
24b5caec RS |
1018 | ;; Handle a function key that translates into something else. |
1019 | ;; If the key has a global definition too, | |
1020 | ;; exit and unread the key itself, so its global definition runs. | |
1021 | ;; Otherwise, unread the translation, | |
1022 | ;; so that the translated key takes effect within isearch. | |
d94eb6eb | 1023 | (cancel-kbd-macro-events) |
24b5caec RS |
1024 | (if (lookup-key global-map key) |
1025 | (progn | |
1026 | (isearch-done) | |
1027 | (apply 'isearch-unread keylist)) | |
1028 | (apply 'isearch-unread | |
1029 | (listify-key-sequence (lookup-key function-key-map key))))) | |
1030 | ( | |
c6431f12 KH |
1031 | ;; Handle an undefined shifted control character |
1032 | ;; by downshifting it if that makes it defined. | |
1033 | ;; (As read-key-sequence would normally do, | |
1034 | ;; if we didn't have a default definition.) | |
1035 | (let ((mods (event-modifiers main-event))) | |
1036 | (and (integerp main-event) | |
1037 | (memq 'shift mods) | |
1038 | (memq 'control mods) | |
1039 | (lookup-key isearch-mode-map | |
1040 | (let ((copy (copy-sequence key))) | |
1041 | (aset copy 0 | |
1042 | (- main-event (- ?\C-\S-a ?\C-a))) | |
1043 | copy) | |
1044 | nil))) | |
1045 | (setcar keylist (- main-event (- ?\C-\S-a ?\C-a))) | |
d94eb6eb | 1046 | (cancel-kbd-macro-events) |
c6431f12 KH |
1047 | (apply 'isearch-unread keylist)) |
1048 | ((eq search-exit-option 'edit) | |
1049 | (apply 'isearch-unread keylist) | |
1050 | (isearch-edit-string)) | |
1051 | (search-exit-option | |
1052 | (let (window) | |
d94eb6eb | 1053 | (cancel-kbd-macro-events) |
c6431f12 KH |
1054 | (apply 'isearch-unread keylist) |
1055 | ;; Properly handle scroll-bar and mode-line clicks | |
1056 | ;; for which a dummy prefix event was generated as (aref key 0). | |
1057 | (and (> (length key) 1) | |
1058 | (symbolp (aref key 0)) | |
1059 | (listp (aref key 1)) | |
1060 | (not (numberp (posn-point (event-start (aref key 1))))) | |
1061 | ;; Convert the event back into its raw form, | |
1062 | ;; with the dummy prefix implicit in the mouse event, | |
1063 | ;; so it will get split up once again. | |
1064 | (progn (setq unread-command-events | |
1065 | (cdr unread-command-events)) | |
1066 | (setq main-event (car unread-command-events)) | |
1067 | (setcar (cdr (event-start main-event)) | |
1068 | (car (nth 1 (event-start main-event)))))) | |
1069 | ;; If we got a mouse click, maybe it was read with the buffer | |
1070 | ;; it was clicked on. If so, that buffer, not the current one, | |
1071 | ;; is in isearch mode. So end the search in that buffer. | |
1072 | (if (and (listp main-event) | |
1073 | (setq window (posn-window (event-start main-event))) | |
1074 | (windowp window)) | |
1075 | (save-excursion | |
1076 | (set-buffer (window-buffer window)) | |
1077 | (isearch-done)) | |
1078 | (isearch-done)))) | |
1079 | (t;; otherwise nil | |
1080 | (isearch-process-search-string key key))))) | |
8e1cae6d | 1081 | |
8e1cae6d JB |
1082 | (defun isearch-quote-char () |
1083 | "Quote special characters for incremental search." | |
1084 | (interactive) | |
1085 | (isearch-process-search-char (read-quoted-char (isearch-message t)))) | |
1086 | ||
8e1cae6d JB |
1087 | (defun isearch-return-char () |
1088 | "Convert return into newline for incremental search. | |
1089 | Obsolete." | |
1090 | (interactive) | |
1091 | (isearch-process-search-char ?\n)) | |
1092 | ||
8e1cae6d | 1093 | (defun isearch-printing-char () |
b68c164d | 1094 | "Add this ordinary printing character to the search string and search." |
8e1cae6d | 1095 | (interactive) |
08200510 | 1096 | (isearch-process-search-char (isearch-last-command-char))) |
8e1cae6d JB |
1097 | |
1098 | (defun isearch-whitespace-chars () | |
08200510 | 1099 | "Match all whitespace chars, if in regexp mode. |
b68c164d | 1100 | If you want to search for just a space, type C-q SPC." |
8e1cae6d | 1101 | (interactive) |
08200510 | 1102 | (if isearch-regexp |
9da6682f RS |
1103 | (if (and search-whitespace-regexp (not isearch-within-brackets) |
1104 | (not isearch-invalid-regexp)) | |
08200510 RS |
1105 | (isearch-process-search-string search-whitespace-regexp " ") |
1106 | (isearch-printing-char)) | |
1107 | (progn | |
eb8c3be9 | 1108 | ;; This way of doing word search doesn't correctly extend current search. |
08200510 RS |
1109 | ;; (setq isearch-word t) |
1110 | ;; (setq isearch-adjusted t) | |
1111 | ;; (goto-char isearch-barrier) | |
1112 | (isearch-printing-char)))) | |
8e1cae6d JB |
1113 | |
1114 | (defun isearch-process-search-char (char) | |
1115 | ;; Append the char to the search string, update the message and re-search. | |
08200510 RS |
1116 | (isearch-process-search-string |
1117 | (isearch-char-to-string char) | |
1118 | (isearch-text-char-description char))) | |
8e1cae6d JB |
1119 | |
1120 | (defun isearch-process-search-string (string message) | |
1121 | (setq isearch-string (concat isearch-string string) | |
1122 | isearch-message (concat isearch-message message)) | |
1123 | (isearch-search-and-update)) | |
1124 | ||
1125 | \f | |
8e1cae6d JB |
1126 | ;; Search Ring |
1127 | ||
08200510 RS |
1128 | (defun isearch-ring-adjust1 (advance) |
1129 | ;; Helper for isearch-ring-adjust | |
1130 | (let* ((ring (if isearch-regexp regexp-search-ring search-ring)) | |
8e1cae6d JB |
1131 | (length (length ring)) |
1132 | (yank-pointer-name (if isearch-regexp | |
08200510 | 1133 | 'regexp-search-ring-yank-pointer |
8e1cae6d JB |
1134 | 'search-ring-yank-pointer)) |
1135 | (yank-pointer (eval yank-pointer-name))) | |
1136 | (if (zerop length) | |
1137 | () | |
1138 | (set yank-pointer-name | |
1139 | (setq yank-pointer | |
ffbc30b2 PE |
1140 | (mod (+ (or yank-pointer 0) |
1141 | (if advance -1 1)) | |
1142 | length))) | |
a5dcf63f | 1143 | (setq isearch-string (nth yank-pointer ring) |
08200510 RS |
1144 | isearch-message (mapconcat 'isearch-text-char-description |
1145 | isearch-string ""))))) | |
1146 | ||
1147 | (defun isearch-ring-adjust (advance) | |
1148 | ;; Helper for isearch-ring-advance and isearch-ring-retreat | |
08200510 | 1149 | (isearch-ring-adjust1 advance) |
08200510 RS |
1150 | (if search-ring-update |
1151 | (progn | |
1152 | (isearch-search) | |
1153 | (isearch-update)) | |
1154 | (isearch-edit-string) | |
2ff20b7e RS |
1155 | ) |
1156 | (isearch-push-state)) | |
8e1cae6d JB |
1157 | |
1158 | (defun isearch-ring-advance () | |
1159 | "Advance to the next search string in the ring." | |
08200510 | 1160 | ;; This could be more general to handle a prefix arg, but who would use it. |
8e1cae6d JB |
1161 | (interactive) |
1162 | (isearch-ring-adjust 'advance)) | |
1163 | ||
1164 | (defun isearch-ring-retreat () | |
1165 | "Retreat to the previous search string in the ring." | |
1166 | (interactive) | |
1167 | (isearch-ring-adjust nil)) | |
1168 | ||
a5dcf63f RS |
1169 | (defun isearch-ring-advance-edit (n) |
1170 | "Insert the next element of the search history into the minibuffer." | |
1171 | (interactive "p") | |
1172 | (let* ((yank-pointer-name (if isearch-regexp | |
1173 | 'regexp-search-ring-yank-pointer | |
1174 | 'search-ring-yank-pointer)) | |
1175 | (yank-pointer (eval yank-pointer-name)) | |
1176 | (ring (if isearch-regexp regexp-search-ring search-ring)) | |
1177 | (length (length ring))) | |
1178 | (if (zerop length) | |
1179 | () | |
1180 | (set yank-pointer-name | |
1181 | (setq yank-pointer | |
ffbc30b2 PE |
1182 | (mod (- (or yank-pointer 0) n) |
1183 | length))) | |
a5dcf63f | 1184 | |
a5dcf63f | 1185 | (erase-buffer) |
35a4d143 | 1186 | (insert (nth yank-pointer ring)) |
49c13105 | 1187 | (goto-char (point-max))))) |
a5dcf63f RS |
1188 | |
1189 | (defun isearch-ring-retreat-edit (n) | |
1190 | "Inserts the previous element of the search history into the minibuffer." | |
1191 | (interactive "p") | |
1192 | (isearch-ring-advance-edit (- n))) | |
1193 | ||
1194 | ;;(defun isearch-ring-adjust-edit (advance) | |
1195 | ;; "Use the next or previous search string in the ring while in minibuffer." | |
1196 | ;; (isearch-ring-adjust1 advance) | |
1197 | ;; (erase-buffer) | |
1198 | ;; (insert isearch-string)) | |
1199 | ||
1200 | ;;(defun isearch-ring-advance-edit () | |
1201 | ;; (interactive) | |
1202 | ;; (isearch-ring-adjust-edit 'advance)) | |
1203 | ||
1204 | ;;(defun isearch-ring-retreat-edit () | |
1205 | ;; "Retreat to the previous search string in the ring while in the minibuffer." | |
1206 | ;; (interactive) | |
1207 | ;; (isearch-ring-adjust-edit nil)) | |
08200510 RS |
1208 | |
1209 | ||
1210 | (defun isearch-complete1 () | |
1211 | ;; Helper for isearch-complete and isearch-complete-edit | |
1212 | ;; Return t if completion OK, nil if no completion exists. | |
1213 | (let* ((ring (if isearch-regexp regexp-search-ring search-ring)) | |
1214 | (alist (mapcar (function (lambda (string) (list string))) ring)) | |
1215 | (completion-ignore-case case-fold-search) | |
1216 | (completion (try-completion isearch-string alist))) | |
1217 | (cond | |
1218 | ((eq completion t) | |
1219 | ;; isearch-string stays the same | |
1220 | t) | |
1221 | ((or completion ; not nil, must be a string | |
b7852303 | 1222 | (= 0 (length isearch-string))) ; shouldn't have to say this |
08200510 | 1223 | (if (equal completion isearch-string) ;; no extension? |
36bcac3f RS |
1224 | (progn |
1225 | (if completion-auto-help | |
1226 | (with-output-to-temp-buffer "*Isearch completions*" | |
1227 | (display-completion-list | |
1228 | (all-completions isearch-string alist)))) | |
1229 | t) | |
1230 | (and completion | |
1231 | (setq isearch-string completion)))) | |
08200510 RS |
1232 | (t |
1233 | (message "No completion") ; waits a second if in minibuffer | |
1234 | nil)))) | |
1235 | ||
1236 | (defun isearch-complete () | |
1237 | "Complete the search string from the strings on the search ring. | |
1238 | The completed string is then editable in the minibuffer. | |
1239 | If there is no completion possible, say so and continue searching." | |
1240 | (interactive) | |
1241 | (if (isearch-complete1) | |
1242 | (isearch-edit-string) | |
1243 | ;; else | |
1244 | (sit-for 1) | |
1245 | (isearch-update))) | |
8e1cae6d | 1246 | |
08200510 RS |
1247 | (defun isearch-complete-edit () |
1248 | "Same as `isearch-complete' except in the minibuffer." | |
1249 | (interactive) | |
1250 | (setq isearch-string (buffer-string)) | |
1251 | (if (isearch-complete1) | |
8e1cae6d | 1252 | (progn |
08200510 RS |
1253 | (erase-buffer) |
1254 | (insert isearch-string)))) | |
8e1cae6d JB |
1255 | |
1256 | \f | |
8e1cae6d | 1257 | ;; The search status stack (and isearch window-local variables, not used). |
08200510 | 1258 | ;; Need a structure for this. |
8e1cae6d JB |
1259 | |
1260 | (defun isearch-top-state () | |
8e1cae6d JB |
1261 | (let ((cmd (car isearch-cmds))) |
1262 | (setq isearch-string (car cmd) | |
1263 | isearch-message (car (cdr cmd)) | |
1264 | isearch-success (nth 3 cmd) | |
1265 | isearch-forward (nth 4 cmd) | |
1266 | isearch-other-end (nth 5 cmd) | |
08200510 RS |
1267 | isearch-word (nth 6 cmd) |
1268 | isearch-invalid-regexp (nth 7 cmd) | |
1269 | isearch-wrapped (nth 8 cmd) | |
c5f6b356 | 1270 | isearch-barrier (nth 9 cmd) |
f551b97d RS |
1271 | isearch-within-brackets (nth 10 cmd) |
1272 | isearch-case-fold-search (nth 11 cmd)) | |
8e1cae6d JB |
1273 | (goto-char (car (cdr (cdr cmd)))))) |
1274 | ||
1275 | (defun isearch-pop-state () | |
8e1cae6d JB |
1276 | (setq isearch-cmds (cdr isearch-cmds)) |
1277 | (isearch-top-state) | |
1278 | ) | |
1279 | ||
1280 | (defun isearch-push-state () | |
1281 | (setq isearch-cmds | |
1282 | (cons (list isearch-string isearch-message (point) | |
1283 | isearch-success isearch-forward isearch-other-end | |
08200510 | 1284 | isearch-word |
c5f6b356 | 1285 | isearch-invalid-regexp isearch-wrapped isearch-barrier |
f551b97d | 1286 | isearch-within-brackets isearch-case-fold-search) |
8e1cae6d JB |
1287 | isearch-cmds))) |
1288 | ||
8e1cae6d | 1289 | \f |
8e1cae6d JB |
1290 | ;; Message string |
1291 | ||
1292 | (defun isearch-message (&optional c-q-hack ellipsis) | |
1293 | ;; Generate and print the message string. | |
1294 | (let ((cursor-in-echo-area ellipsis) | |
1295 | (m (concat | |
08200510 | 1296 | (isearch-message-prefix c-q-hack ellipsis isearch-nonincremental) |
8e1cae6d JB |
1297 | isearch-message |
1298 | (isearch-message-suffix c-q-hack ellipsis) | |
1299 | ))) | |
a56687f1 KH |
1300 | (if c-q-hack |
1301 | m | |
1302 | (let ((message-log-max nil)) | |
1303 | (message "%s" m))))) | |
8e1cae6d | 1304 | |
08200510 | 1305 | (defun isearch-message-prefix (&optional c-q-hack ellipsis nonincremental) |
8e1cae6d JB |
1306 | ;; If about to search, and previous search regexp was invalid, |
1307 | ;; check that it still is. If it is valid now, | |
1308 | ;; let the message we display while searching say that it is valid. | |
1309 | (and isearch-invalid-regexp ellipsis | |
1310 | (condition-case () | |
1311 | (progn (re-search-forward isearch-string (point) t) | |
8eb40e74 KH |
1312 | (setq isearch-invalid-regexp nil |
1313 | isearch-within-brackets nil)) | |
8e1cae6d JB |
1314 | (error nil))) |
1315 | ;; If currently failing, display no ellipsis. | |
1316 | (or isearch-success (setq ellipsis nil)) | |
1317 | (let ((m (concat (if isearch-success "" "failing ") | |
7badea30 RS |
1318 | (if (and isearch-wrapped |
1319 | (if isearch-forward | |
1320 | (> (point) isearch-opoint) | |
1321 | (< (point) isearch-opoint))) | |
1322 | "over") | |
8e1cae6d | 1323 | (if isearch-wrapped "wrapped ") |
08200510 | 1324 | (if isearch-word "word " "") |
8e1cae6d | 1325 | (if isearch-regexp "regexp " "") |
08200510 | 1326 | (if nonincremental "search" "I-search") |
8e1cae6d JB |
1327 | (if isearch-forward ": " " backward: ") |
1328 | ))) | |
1329 | (aset m 0 (upcase (aref m 0))) | |
1330 | m)) | |
1331 | ||
1332 | ||
1333 | (defun isearch-message-suffix (&optional c-q-hack ellipsis) | |
1334 | (concat (if c-q-hack "^Q" "") | |
1335 | (if isearch-invalid-regexp | |
1336 | (concat " [" isearch-invalid-regexp "]") | |
1337 | ""))) | |
1338 | ||
1339 | \f | |
8e1cae6d JB |
1340 | ;;; Searching |
1341 | ||
1342 | (defun isearch-search () | |
1343 | ;; Do the search with the current search string. | |
1344 | (isearch-message nil t) | |
4453091d | 1345 | (if (and (eq isearch-case-fold-search t) search-upper-case) |
b78559b0 RS |
1346 | (setq isearch-case-fold-search |
1347 | (isearch-no-upper-case-p isearch-string isearch-regexp))) | |
8e1cae6d JB |
1348 | (condition-case lossage |
1349 | (let ((inhibit-quit nil) | |
1350 | (case-fold-search isearch-case-fold-search)) | |
1351 | (if isearch-regexp (setq isearch-invalid-regexp nil)) | |
c5f6b356 | 1352 | (setq isearch-within-brackets nil) |
8e1cae6d JB |
1353 | (setq isearch-success |
1354 | (funcall | |
08200510 RS |
1355 | (cond (isearch-word |
1356 | (if isearch-forward | |
1357 | 'word-search-forward 'word-search-backward)) | |
1358 | (isearch-regexp | |
1359 | (if isearch-forward | |
1360 | 're-search-forward 're-search-backward)) | |
1361 | (t | |
1362 | (if isearch-forward 'search-forward 'search-backward))) | |
8e1cae6d | 1363 | isearch-string nil t)) |
99ae9e9f | 1364 | (setq isearch-just-started nil) |
8e1cae6d JB |
1365 | (if isearch-success |
1366 | (setq isearch-other-end | |
1367 | (if isearch-forward (match-beginning 0) (match-end 0))))) | |
1368 | ||
d32696d4 | 1369 | (quit (isearch-unread ?\C-g) |
8e1cae6d JB |
1370 | (setq isearch-success nil)) |
1371 | ||
1372 | (invalid-regexp | |
1373 | (setq isearch-invalid-regexp (car (cdr lossage))) | |
c5f6b356 RS |
1374 | (setq isearch-within-brackets (string-match "\\`Unmatched \\[" |
1375 | isearch-invalid-regexp)) | |
8e1cae6d JB |
1376 | (if (string-match |
1377 | "\\`Premature \\|\\`Unmatched \\|\\`Invalid " | |
1378 | isearch-invalid-regexp) | |
f1c03125 RS |
1379 | (setq isearch-invalid-regexp "incomplete input"))) |
1380 | (error | |
1381 | ;; stack overflow in regexp search. | |
1382 | (setq isearch-invalid-regexp (car (cdr lossage))))) | |
8e1cae6d JB |
1383 | |
1384 | (if isearch-success | |
1385 | nil | |
1386 | ;; Ding if failed this time after succeeding last time. | |
1387 | (and (nth 3 (car isearch-cmds)) | |
1388 | (ding)) | |
1389 | (goto-char (nth 2 (car isearch-cmds))))) | |
1390 | ||
08200510 RS |
1391 | |
1392 | \f | |
08200510 RS |
1393 | ;;; Highlighting |
1394 | ||
b78559b0 | 1395 | (defvar isearch-overlay nil) |
08200510 | 1396 | |
b78559b0 | 1397 | (defun isearch-highlight (beg end) |
f5f6a944 | 1398 | (if (or (null search-highlight) (null window-system)) |
08200510 | 1399 | nil |
b78559b0 RS |
1400 | (or isearch-overlay (setq isearch-overlay (make-overlay beg end))) |
1401 | (move-overlay isearch-overlay beg end (current-buffer)) | |
82318db5 RS |
1402 | (overlay-put isearch-overlay 'face |
1403 | (if (internal-find-face 'isearch nil) | |
1404 | 'isearch 'region)))) | |
b78559b0 RS |
1405 | |
1406 | (defun isearch-dehighlight (totally) | |
1407 | (if isearch-overlay | |
1408 | (delete-overlay isearch-overlay))) | |
08200510 | 1409 | |
08200510 RS |
1410 | ;;; General utilities |
1411 | ||
08200510 | 1412 | |
b78559b0 RS |
1413 | (defun isearch-no-upper-case-p (string regexp-flag) |
1414 | "Return t if there are no upper case chars in STRING. | |
b7852303 | 1415 | If REGEXP-FLAG is non-nil, disregard letters preceded by `\\' (but not `\\\\') |
b78559b0 | 1416 | since they have special meaning in a regexp." |
59057198 RS |
1417 | (let (quote-flag (i 0) (len (length string)) found) |
1418 | (while (and (not found) (< i len)) | |
1419 | (let ((char (aref string i))) | |
1420 | (if (and regexp-flag (eq char ?\\)) | |
1421 | (setq quote-flag (not quote-flag)) | |
1422 | (if (and (not quote-flag) (not (eq char (downcase char)))) | |
1423 | (setq found t)))) | |
1424 | (setq i (1+ i))) | |
1425 | (not found))) | |
08200510 | 1426 | |
b78559b0 | 1427 | ;; Portability functions to support various Emacs versions. |
8e1cae6d | 1428 | |
08200510 | 1429 | (defun isearch-char-to-string (c) |
0cabad13 | 1430 | (make-string 1 c)) |
08200510 RS |
1431 | |
1432 | (defun isearch-text-char-description (c) | |
9d78ff8b RS |
1433 | (if (and (integerp c) (or (< c ?\ ) (= c ?\^?))) |
1434 | (text-char-description c) | |
1435 | (isearch-char-to-string c))) | |
08200510 | 1436 | |
bd1bd125 | 1437 | ;; General function to unread characters or events. |
99ae9e9f | 1438 | ;; Also insert them in a keyboard macro being defined. |
8f90f594 | 1439 | (defun isearch-unread (&rest char-or-events) |
99ae9e9f | 1440 | (mapcar 'store-kbd-macro-event char-or-events) |
bd1bd125 RS |
1441 | (setq unread-command-events |
1442 | (append char-or-events unread-command-events))) | |
08200510 RS |
1443 | |
1444 | (defun isearch-last-command-char () | |
1445 | ;; General function to return the last command character. | |
58451992 | 1446 | last-command-char) |
08200510 | 1447 | |
3b1e4dd1 | 1448 | ;;; isearch.el ends here |