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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 | |
21 | ;; along with GNU Emacs; see the file COPYING. If not, write to | |
22 | ;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. | |
8e1cae6d | 23 | |
3b1e4dd1 ER |
24 | ;;; Commentary: |
25 | ||
8e1cae6d JB |
26 | ;;;==================================================================== |
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 | ||
8cb2ceaa RS |
68 | ;;; Changes before those recorded in ChangeLog: |
69 | ||
08200510 RS |
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. | |
282d89c0 | 79 | ;;; |
08200510 RS |
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. | |
282d89c0 ER |
98 | |
99 | ;;; Changes for 1.1 | |
100 | ;;; 3/18/92 Fixed invalid-regexp. | |
101 | ;;; 3/18/92 Fixed yanking in regexps. | |
102 | ||
3b1e4dd1 | 103 | ;;; Code: |
08200510 RS |
104 | |
105 | \f | |
58451992 RS |
106 | ;;;======================================================================== |
107 | ;;; Some additional options and constants. | |
08200510 | 108 | |
fdf5afa4 | 109 | (defconst search-exit-option t |
a8f783b2 | 110 | "*Non-nil means random control characters terminate incremental search.") |
fdf5afa4 RS |
111 | |
112 | (defvar search-slow-window-lines 1 | |
113 | "*Number of lines in slow search display windows. | |
114 | These are the short windows used during incremental search on slow terminals. | |
115 | Negative means put the slow search window at the top (normally it's at bottom) | |
116 | and the value is minus the number of lines.") | |
117 | ||
118 | (defvar search-slow-speed 1200 | |
119 | "*Highest terminal speed at which to use \"slow\" style incremental search. | |
120 | This is the style where a one-line window is created to show the line | |
121 | that the search has reached.") | |
8e1cae6d | 122 | |
b78559b0 | 123 | (defvar search-upper-case 'not-yanks |
8e1cae6d | 124 | "*If non-nil, upper case chars disable case fold searching. |
08200510 RS |
125 | That is, upper and lower case chars must match exactly. |
126 | This applies no matter where the chars come from, but does not | |
fdf5afa4 RS |
127 | apply to chars in regexps that are prefixed with `\\'. |
128 | If this value is `not-yanks', yanked text is always downcased.") | |
8e1cae6d JB |
129 | |
130 | (defvar search-nonincremental-instead t | |
131 | "*If non-nil, do a nonincremental search instead if exiting immediately. | |
08200510 RS |
132 | Actually, `isearch-edit-string' is called to let you enter the search |
133 | string, and RET terminates editing and does a nonincremental search.") | |
8e1cae6d JB |
134 | |
135 | (defconst search-whitespace-regexp "\\s-+" | |
136 | "*If non-nil, regular expression to match a sequence of whitespace chars. | |
137 | You might want to use something like \"[ \\t\\r\\n]+\" instead.") | |
138 | ||
08200510 | 139 | (defvar search-highlight nil |
b78559b0 | 140 | "*Non-nil means incremental search highlights the current match.") |
08200510 RS |
141 | |
142 | (defvar isearch-mode-hook nil | |
143 | "Function(s) to call after starting up an incremental search.") | |
144 | ||
145 | (defvar isearch-mode-end-hook nil | |
146 | "Function(s) to call after terminating an incremental search.") | |
147 | ||
8e1cae6d JB |
148 | ;;;================================================================== |
149 | ;;; Search ring. | |
8e1cae6d JB |
150 | |
151 | (defvar search-ring nil | |
152 | "List of search string sequences.") | |
08200510 | 153 | (defvar regexp-search-ring nil |
8e1cae6d JB |
154 | "List of regular expression search string sequences.") |
155 | ||
156 | (defconst search-ring-max 16 | |
157 | "*Maximum length of search ring before oldest elements are thrown away.") | |
08200510 RS |
158 | (defconst regexp-search-ring-max 16 |
159 | "*Maximum length of regexp search ring before oldest elements are thrown away.") | |
8e1cae6d JB |
160 | |
161 | (defvar search-ring-yank-pointer nil | |
a5dcf63f RS |
162 | "Index in `search-ring' of last string reused. |
163 | nil if none yet.") | |
08200510 | 164 | (defvar regexp-search-ring-yank-pointer nil |
a5dcf63f RS |
165 | "Index in `regexp-search-ring' of last string reused. |
166 | nil if none yet.") | |
8e1cae6d | 167 | |
08200510 RS |
168 | (defvar search-ring-update nil |
169 | "*Non-nil if advancing or retreating in the search ring should cause search. | |
170 | Default value, nil, means edit the string instead.") | |
171 | ||
8e1cae6d JB |
172 | ;;;==================================================== |
173 | ;;; Define isearch-mode keymap. | |
174 | ||
175 | (defvar isearch-mode-map nil | |
176 | "Keymap for isearch-mode.") | |
177 | ||
08200510 RS |
178 | (or isearch-mode-map |
179 | (let* ((i 0) | |
fdf5afa4 | 180 | (map (make-keymap))) |
fcf8ba15 RS |
181 | (or (vectorp (nth 1 map)) |
182 | (error "The initialization of isearch-mode-map must be updated")) | |
183 | ;; Give this map a vector 256 long, for dense binding | |
184 | ;; of a larger range of ordinary characters. | |
185 | (setcar (cdr map) (make-vector 256 nil)) | |
08200510 | 186 | |
ac689515 RS |
187 | ;; Make function keys, etc, exit the search. |
188 | (define-key map [t] 'isearch-other-control-char) | |
08200510 | 189 | ;; Control chars, by default, end isearch mode transparently. |
ac689515 RS |
190 | ;; We need these explicit definitions because, in a dense keymap, |
191 | ;; the binding for t does not affect characters. | |
192 | ;; We use a dense keymap to save space. | |
08200510 RS |
193 | (while (< i ?\ ) |
194 | (define-key map (make-string 1 i) 'isearch-other-control-char) | |
195 | (setq i (1+ i))) | |
196 | ||
8cb2ceaa | 197 | ;; Printing chars extend the search string by default. |
ac689515 | 198 | (setq i ?\ ) |
8d7e4e80 | 199 | (while (< i (length (nth 1 map))) |
8cb2ceaa | 200 | (define-key map (vector i) 'isearch-printing-char) |
08200510 RS |
201 | (setq i (1+ i))) |
202 | ||
ec121bad RS |
203 | ;; To handle local bindings with meta char prefix keys, define |
204 | ;; another full keymap. This must be done for any other prefix | |
205 | ;; keys as well, one full keymap per char of the prefix key. It | |
206 | ;; would be simpler to disable the global keymap, and/or have a | |
207 | ;; default local key binding for any key not otherwise bound. | |
208 | (let ((meta-map (make-sparse-keymap))) | |
209 | (define-key map (char-to-string meta-prefix-char) meta-map) | |
210 | (define-key map [escape] meta-map)) | |
211 | (define-key map (vector meta-prefix-char t) 'isearch-other-meta-char) | |
212 | ||
08200510 RS |
213 | ;; Several non-printing chars change the searching behavior. |
214 | (define-key map "\C-s" 'isearch-repeat-forward) | |
215 | (define-key map "\C-r" 'isearch-repeat-backward) | |
216 | (define-key map "\177" 'isearch-delete-char) | |
217 | (define-key map "\C-g" 'isearch-abort) | |
ec121bad RS |
218 | ;; This assumes \e is the meta-prefix-char. |
219 | (or (= ?\e meta-prefix-char) | |
220 | (error "Inconsistency in isearch.el")) | |
19993c54 RS |
221 | (define-key map "\e\e\e" 'isearch-cancel) |
222 | (define-key map [escape escape escape] 'isearch-cancel) | |
8e1cae6d | 223 | |
08200510 RS |
224 | (define-key map "\C-q" 'isearch-quote-char) |
225 | ||
08200510 RS |
226 | (define-key map "\r" 'isearch-exit) |
227 | (define-key map "\C-j" 'isearch-printing-char) | |
228 | (define-key map "\t" 'isearch-printing-char) | |
229 | (define-key map " " 'isearch-whitespace-chars) | |
8e1cae6d | 230 | |
08200510 RS |
231 | (define-key map "\C-w" 'isearch-yank-word) |
232 | (define-key map "\C-y" 'isearch-yank-line) | |
233 | ||
234 | ;; Define keys for regexp chars * ? |. | |
235 | ;; Nothing special for + because it matches at least once. | |
236 | (define-key map "*" 'isearch-*-char) | |
237 | (define-key map "?" 'isearch-*-char) | |
238 | (define-key map "|" 'isearch-|-char) | |
239 | ||
58f1634a RS |
240 | ;;; Turned off because I find I expect to get the global definition--rms. |
241 | ;;; ;; Instead bind C-h to special help command for isearch-mode. | |
242 | ;;; (define-key map "\C-h" 'isearch-mode-help) | |
08200510 | 243 | |
08200510 RS |
244 | (define-key map "\M-n" 'isearch-ring-advance) |
245 | (define-key map "\M-p" 'isearch-ring-retreat) | |
30d47262 | 246 | (define-key map "\M-y" 'isearch-yank-kill) |
1a3a6707 | 247 | |
08200510 RS |
248 | (define-key map "\M-\t" 'isearch-complete) |
249 | ||
5f48fc17 KH |
250 | ;; Pass frame events transparently so they won't exit the search. |
251 | ;; In particular, if we have more than one display open, then a | |
252 | ;; switch-frame might be generated by someone typing at another keyboard. | |
253 | (define-key map [switch-frame] nil) | |
254 | (define-key map [delete-frame] nil) | |
255 | (define-key map [iconify-frame] nil) | |
256 | (define-key map [make-frame-visible] nil) | |
257 | ||
08200510 RS |
258 | (setq isearch-mode-map map) |
259 | )) | |
8e1cae6d | 260 | |
08200510 RS |
261 | ;; Some bindings you may want to put in your isearch-mode-hook. |
262 | ;; Suggest some alternates... | |
4453091d | 263 | ;; (define-key isearch-mode-map "\C-t" 'isearch-toggle-case-fold) |
08200510 RS |
264 | ;; (define-key isearch-mode-map "\C-t" 'isearch-toggle-regexp) |
265 | ;; (define-key isearch-mode-map "\C-^" 'isearch-edit-string) | |
8e1cae6d | 266 | |
8e1cae6d | 267 | |
08200510 RS |
268 | (defvar minibuffer-local-isearch-map nil |
269 | "Keymap for editing isearch strings in the minibuffer.") | |
8e1cae6d | 270 | |
08200510 RS |
271 | (or minibuffer-local-isearch-map |
272 | (let ((map (copy-keymap minibuffer-local-map))) | |
273 | (define-key map "\r" 'isearch-nonincremental-exit-minibuffer) | |
35a4d143 RS |
274 | (define-key map "\M-n" 'isearch-ring-advance-edit) |
275 | (define-key map "\M-p" 'isearch-ring-retreat-edit) | |
08200510 RS |
276 | (define-key map "\M-\t" 'isearch-complete-edit) |
277 | (define-key map "\C-s" 'isearch-forward-exit-minibuffer) | |
278 | (define-key map "\C-r" 'isearch-reverse-exit-minibuffer) | |
279 | (setq minibuffer-local-isearch-map map) | |
280 | )) | |
8e1cae6d JB |
281 | |
282 | ;;;======================================================== | |
283 | ;; Internal variables declared globally for byte-compiler. | |
08200510 RS |
284 | ;; These are all set with setq while isearching |
285 | ;; and bound locally while editing the search string. | |
286 | ||
287 | (defvar isearch-forward nil) ; Searching in the forward direction. | |
288 | (defvar isearch-regexp nil) ; Searching for a regexp. | |
289 | (defvar isearch-word nil) ; Searching for words. | |
290 | ||
291 | (defvar isearch-cmds nil) ; Stack of search status sets. | |
292 | (defvar isearch-string "") ; The current search string. | |
293 | (defvar isearch-message "") ; text-char-description version of isearch-string | |
294 | ||
295 | (defvar isearch-success t) ; Searching is currently successful. | |
296 | (defvar isearch-invalid-regexp nil) ; Regexp not well formed. | |
c5f6b356 | 297 | (defvar isearch-within-brackets nil) ; Regexp has unclosed [. |
08200510 RS |
298 | (defvar isearch-other-end nil) ; Start (end) of match if forward (backward). |
299 | (defvar isearch-wrapped nil) ; Searching restarted from the top (bottom). | |
8e1cae6d | 300 | (defvar isearch-barrier 0) |
99ae9e9f | 301 | (defvar isearch-just-started nil) |
8e1cae6d | 302 | |
4453091d RS |
303 | ; case-fold-search while searching. |
304 | ; either nil, t, or 'yes. 'yes means the same as t except that mixed | |
305 | ; case in the search string is ignored. | |
306 | (defvar isearch-case-fold-search nil) | |
8e1cae6d JB |
307 | |
308 | (defvar isearch-adjusted nil) | |
309 | (defvar isearch-slow-terminal-mode nil) | |
08200510 RS |
310 | ;;; If t, using a small window. |
311 | (defvar isearch-small-window nil) | |
8e1cae6d | 312 | (defvar isearch-opoint 0) |
08200510 RS |
313 | ;;; The window configuration active at the beginning of the search. |
314 | (defvar isearch-window-configuration nil) | |
8e1cae6d | 315 | |
08200510 RS |
316 | ;; Flag to indicate a yank occurred, so don't move the cursor. |
317 | (defvar isearch-yank-flag nil) | |
8e1cae6d | 318 | |
08200510 RS |
319 | ;;; A function to be called after each input character is processed. |
320 | ;;; (It is not called after characters that exit the search.) | |
321 | ;;; It is only set from an optional argument to `isearch-mode'. | |
322 | (defvar isearch-op-fun nil) | |
8e1cae6d | 323 | |
08200510 RS |
324 | ;;; Is isearch-mode in a recursive edit for modal searching. |
325 | (defvar isearch-recursive-edit nil) | |
8e1cae6d | 326 | |
08200510 RS |
327 | ;;; Should isearch be terminated after doing one search? |
328 | (defvar isearch-nonincremental nil) | |
329 | ||
330 | ;; New value of isearch-forward after isearch-edit-string. | |
331 | (defvar isearch-new-forward nil) | |
8e1cae6d | 332 | |
8e1cae6d JB |
333 | |
334 | ;;;============================================================== | |
335 | ;; Minor-mode-alist changes - kind of redundant with the | |
336 | ;; echo area, but if isearching in multiple windows, it can be useful. | |
337 | ||
338 | (or (assq 'isearch-mode minor-mode-alist) | |
339 | (nconc minor-mode-alist | |
340 | (list '(isearch-mode isearch-mode)))) | |
341 | ||
08200510 | 342 | (defvar isearch-mode nil) ;; Name of the minor mode, if non-nil. |
8e1cae6d JB |
343 | (make-variable-buffer-local 'isearch-mode) |
344 | ||
fdf5afa4 RS |
345 | (define-key global-map "\C-s" 'isearch-forward) |
346 | (define-key esc-map "\C-s" 'isearch-forward-regexp) | |
347 | (define-key global-map "\C-r" 'isearch-backward) | |
348 | (define-key esc-map "\C-r" 'isearch-backward-regexp) | |
349 | ||
8e1cae6d JB |
350 | ;;;=============================================================== |
351 | ;;; Entry points to isearch-mode. | |
08200510 | 352 | ;;; These four functions should replace those in loaddefs.el |
b457cc3b | 353 | ;;; An alternative is to defalias isearch-forward etc to isearch-mode, |
08200510 | 354 | ;;; and look at this-command to set the options accordingly. |
8e1cae6d | 355 | |
eceee2c0 | 356 | (defun isearch-forward (&optional regexp-p no-recursive-edit) |
8e1cae6d JB |
357 | "\ |
358 | Do incremental search forward. | |
08200510 RS |
359 | With a prefix argument, do an incremental regular expression search instead. |
360 | \\<isearch-mode-map> | |
8e1cae6d | 361 | As you type characters, they add to the search string and are found. |
08200510 | 362 | The following non-printing keys are bound in `isearch-mode-map'. |
8e1cae6d | 363 | |
08200510 | 364 | Type \\[isearch-delete-char] to cancel characters from end of search string. |
8e1cae6d | 365 | Type \\[isearch-exit] to exit, leaving point at location found. |
08200510 RS |
366 | Type LFD (C-j) to match end of line. |
367 | Type \\[isearch-repeat-forward] to search again forward,\ | |
368 | \\[isearch-repeat-backward] to search again backward. | |
369 | Type \\[isearch-yank-word] to yank word from buffer onto end of search\ | |
370 | string and search for it. | |
371 | Type \\[isearch-yank-line] to yank rest of line onto end of search string\ | |
372 | and search for it. | |
8e1cae6d | 373 | Type \\[isearch-quote-char] to quote control character to search for it. |
08200510 RS |
374 | \\[isearch-abort] while searching or when search has failed cancels input\ |
375 | back to what has | |
376 | been found successfully. | |
377 | \\[isearch-abort] when search is successful aborts and moves point to\ | |
378 | starting point. | |
8e1cae6d JB |
379 | |
380 | Also supported is a search ring of the previous 16 search strings. | |
381 | Type \\[isearch-ring-advance] to search for the next item in the search ring. | |
08200510 RS |
382 | Type \\[isearch-ring-retreat] to search for the previous item in the search\ |
383 | ring. | |
384 | Type \\[isearch-complete] to complete the search string using the search ring. | |
8e1cae6d | 385 | |
08200510 RS |
386 | The above keys, bound in `isearch-mode-map', are often controlled by |
387 | options; do M-x apropos on search-.* to find them. | |
8e1cae6d | 388 | Other control and meta characters terminate the search |
08200510 | 389 | and are then executed normally (depending on `search-exit-option'). |
fd49e05c | 390 | Likewise for function keys and mouse button events. |
8e1cae6d | 391 | |
08200510 RS |
392 | If this function is called non-interactively, it does not return to |
393 | the calling function until the search is done." | |
8e1cae6d | 394 | |
eceee2c0 | 395 | (interactive "P\np") |
4ae7d00a | 396 | (isearch-mode t (not (null regexp-p)) nil (not no-recursive-edit))) |
8e1cae6d | 397 | |
eceee2c0 | 398 | (defun isearch-forward-regexp (&optional not-regexp no-recursive-edit) |
8e1cae6d JB |
399 | "\ |
400 | Do incremental search forward for regular expression. | |
08200510 | 401 | With a prefix argument, do a regular string search instead. |
8e1cae6d JB |
402 | Like ordinary incremental search except that your input |
403 | is treated as a regexp. See \\[isearch-forward] for more info." | |
eceee2c0 | 404 | (interactive "P\np") |
4ae7d00a | 405 | (isearch-mode t (null not-regexp) nil (not no-recursive-edit))) |
8e1cae6d | 406 | |
eceee2c0 | 407 | (defun isearch-backward (&optional regexp-p no-recursive-edit) |
8e1cae6d JB |
408 | "\ |
409 | Do incremental search backward. | |
08200510 | 410 | With a prefix argument, do a regular expression search instead. |
8e1cae6d | 411 | See \\[isearch-forward] for more information." |
eceee2c0 | 412 | (interactive "P\np") |
4ae7d00a | 413 | (isearch-mode nil (not (null regexp-p)) nil (not no-recursive-edit))) |
8e1cae6d | 414 | |
eceee2c0 | 415 | (defun isearch-backward-regexp (&optional not-regexp no-recursive-edit) |
8e1cae6d JB |
416 | "\ |
417 | Do incremental search backward for regular expression. | |
08200510 | 418 | With a prefix argument, do a regular string search instead. |
8e1cae6d JB |
419 | Like ordinary incremental search except that your input |
420 | is treated as a regexp. See \\[isearch-forward] for more info." | |
eceee2c0 | 421 | (interactive "P\np") |
4ae7d00a | 422 | (isearch-mode nil (null not-regexp) nil (not no-recursive-edit))) |
08200510 RS |
423 | |
424 | ||
425 | (defun isearch-mode-help () | |
426 | (interactive) | |
427 | (describe-function 'isearch-forward) | |
428 | (isearch-update)) | |
8e1cae6d JB |
429 | |
430 | \f | |
431 | ;;;================================================================== | |
432 | ;; isearch-mode only sets up incremental search for the minor mode. | |
433 | ;; All the work is done by the isearch-mode commands. | |
434 | ||
08200510 RS |
435 | ;; Not used yet: |
436 | ;;(defconst isearch-commands '(isearch-forward isearch-backward | |
437 | ;; isearch-forward-regexp isearch-backward-regexp) | |
438 | ;; "List of commands for which isearch-mode does not recursive-edit.") | |
439 | ||
440 | ||
441 | (defun isearch-mode (forward &optional regexp op-fun recursive-edit word-p) | |
79ce455d RS |
442 | "Start isearch minor mode. Called by `isearch-forward', etc. |
443 | ||
444 | \\{isearch-mode-map}" | |
8e1cae6d JB |
445 | |
446 | ;; Initialize global vars. | |
447 | (setq isearch-forward forward | |
448 | isearch-regexp regexp | |
08200510 | 449 | isearch-word word-p |
8e1cae6d JB |
450 | isearch-op-fun op-fun |
451 | isearch-case-fold-search case-fold-search | |
452 | isearch-string "" | |
453 | isearch-message "" | |
454 | isearch-cmds nil | |
455 | isearch-success t | |
456 | isearch-wrapped nil | |
457 | isearch-barrier (point) | |
458 | isearch-adjusted nil | |
459 | isearch-yank-flag nil | |
460 | isearch-invalid-regexp nil | |
c5f6b356 | 461 | isearch-within-brackets nil |
0cabad13 | 462 | isearch-slow-terminal-mode (and (<= baud-rate search-slow-speed) |
8e1cae6d JB |
463 | (> (window-height) |
464 | (* 4 search-slow-window-lines))) | |
465 | isearch-other-end nil | |
466 | isearch-small-window nil | |
99ae9e9f | 467 | isearch-just-started t |
8e1cae6d | 468 | |
8e1cae6d | 469 | isearch-opoint (point) |
a5dcf63f RS |
470 | search-ring-yank-pointer nil |
471 | regexp-search-ring-yank-pointer nil) | |
99ae9e9f | 472 | (looking-at "") |
292a8dff RS |
473 | (setq isearch-window-configuration |
474 | (if isearch-slow-terminal-mode (current-window-configuration) nil)) | |
70418205 | 475 | |
8e1cae6d | 476 | (setq isearch-mode " Isearch") ;; forward? regexp? |
1cd3732c | 477 | (force-mode-line-update) |
8e1cae6d JB |
478 | |
479 | (isearch-push-state) | |
480 | ||
c7955222 | 481 | (setq overriding-terminal-local-map isearch-mode-map) |
8e1cae6d JB |
482 | (isearch-update) |
483 | (run-hooks 'isearch-mode-hook) | |
08200510 | 484 | |
6e5cd0ae RS |
485 | (setq mouse-leave-buffer-hook '(isearch-done)) |
486 | ||
08200510 RS |
487 | ;; isearch-mode can be made modal (in the sense of not returning to |
488 | ;; the calling function until searching is completed) by entering | |
489 | ;; a recursive-edit and exiting it when done isearching. | |
130bf67c RS |
490 | (if recursive-edit |
491 | (let ((isearch-recursive-edit t)) | |
492 | (recursive-edit))) | |
0daa17f3 | 493 | isearch-success) |
8e1cae6d JB |
494 | |
495 | ||
496 | ;;;==================================================== | |
497 | ;; Some high level utilities. Others below. | |
498 | ||
499 | (defun isearch-update () | |
500 | ;; Called after each command to update the display. | |
58451992 | 501 | (if (null unread-command-events) |
8e1cae6d JB |
502 | (progn |
503 | (if (not (input-pending-p)) | |
504 | (isearch-message)) | |
505 | (if (and isearch-slow-terminal-mode | |
506 | (not (or isearch-small-window | |
507 | (pos-visible-in-window-p)))) | |
08200510 | 508 | (let ((found-point (point))) |
8e1cae6d | 509 | (setq isearch-small-window t) |
8e1cae6d JB |
510 | (move-to-window-line 0) |
511 | (let ((window-min-height 1)) | |
512 | (split-window nil (if (< search-slow-window-lines 0) | |
513 | (1+ (- search-slow-window-lines)) | |
514 | (- (window-height) | |
515 | (1+ search-slow-window-lines))))) | |
516 | (if (< search-slow-window-lines 0) | |
517 | (progn (vertical-motion (- 1 search-slow-window-lines)) | |
518 | (set-window-start (next-window) (point)) | |
519 | (set-window-hscroll (next-window) | |
520 | (window-hscroll)) | |
521 | (set-window-hscroll (selected-window) 0)) | |
522 | (other-window 1)) | |
08200510 RS |
523 | (goto-char found-point))) |
524 | (if isearch-other-end | |
525 | (if (< isearch-other-end (point)) ; isearch-forward? | |
526 | (isearch-highlight isearch-other-end (point)) | |
99afb671 RS |
527 | (isearch-highlight (point) isearch-other-end)) |
528 | (isearch-dehighlight nil)) | |
08200510 | 529 | )) |
8e1cae6d JB |
530 | (setq ;; quit-flag nil not for isearch-mode |
531 | isearch-adjusted nil | |
532 | isearch-yank-flag nil) | |
533 | ) | |
534 | ||
0daa17f3 | 535 | (defun isearch-done (&optional nopush edit) |
6e5cd0ae | 536 | (setq mouse-leave-buffer-hook nil) |
8e1cae6d | 537 | ;; Called by all commands that terminate isearch-mode. |
35a4d143 | 538 | ;; If NOPUSH is non-nil, we don't push the string on the search ring. |
c7955222 | 539 | (setq overriding-terminal-local-map nil) |
08200510 RS |
540 | ;; (setq pre-command-hook isearch-old-pre-command-hook) ; for lemacs |
541 | (isearch-dehighlight t) | |
542 | (let ((found-start (window-start (selected-window))) | |
543 | (found-point (point))) | |
70418205 RS |
544 | (if isearch-window-configuration |
545 | (set-window-configuration isearch-window-configuration)) | |
08200510 | 546 | |
d49b6338 RS |
547 | (if isearch-small-window |
548 | (goto-char found-point) | |
549 | ;; Exiting the save-window-excursion clobbers window-start; restore it. | |
9821535a | 550 | (set-window-start (selected-window) found-start t)) |
d49b6338 | 551 | |
08200510 RS |
552 | ;; If there was movement, mark the starting position. |
553 | ;; Maybe should test difference between and set mark iff > threshold. | |
554 | (if (/= (point) isearch-opoint) | |
9821535a RS |
555 | (or (and transient-mark-mode mark-active) |
556 | (progn | |
557 | (push-mark isearch-opoint t) | |
f3acf6f5 | 558 | (or executing-kbd-macro (> (minibuffer-depth) 0) |
9821535a | 559 | (message "Mark saved where search started")))))) |
08200510 RS |
560 | |
561 | (setq isearch-mode nil) | |
1cd3732c | 562 | (force-mode-line-update) |
8e1cae6d | 563 | |
35a4d143 | 564 | (if (and (> (length isearch-string) 0) (not nopush)) |
8e1cae6d | 565 | ;; Update the ring data. |
73d2bf95 | 566 | (isearch-update-ring isearch-string isearch-regexp)) |
8e1cae6d | 567 | |
8e1cae6d | 568 | (run-hooks 'isearch-mode-end-hook) |
0daa17f3 | 569 | (and (not edit) isearch-recursive-edit (exit-recursive-edit))) |
08200510 | 570 | |
73d2bf95 RS |
571 | (defun isearch-update-ring (string &optional regexp) |
572 | "Add STRING to the beginning of the search ring. | |
573 | REGEXP says which ring to use." | |
574 | (if regexp | |
575 | (if (or (null regexp-search-ring) | |
fd89878d | 576 | (not (string= string (car regexp-search-ring)))) |
73d2bf95 RS |
577 | (progn |
578 | (setq regexp-search-ring | |
fd89878d | 579 | (cons string regexp-search-ring)) |
73d2bf95 RS |
580 | (if (> (length regexp-search-ring) regexp-search-ring-max) |
581 | (setcdr (nthcdr (1- search-ring-max) regexp-search-ring) | |
582 | nil)))) | |
583 | (if (or (null search-ring) | |
fd89878d | 584 | (not (string= string (car search-ring)))) |
73d2bf95 | 585 | (progn |
fd89878d | 586 | (setq search-ring (cons string search-ring)) |
73d2bf95 RS |
587 | (if (> (length search-ring) search-ring-max) |
588 | (setcdr (nthcdr (1- search-ring-max) search-ring) nil)))))) | |
589 | ||
08200510 RS |
590 | ;;;======================================================= |
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 RS |
601 | |
602 | ;;;======================================================== | |
8e1cae6d JB |
603 | |
604 | \f | |
605 | ;;;==================================================== | |
606 | ;; Commands active while inside of the isearch minor mode. | |
607 | ||
608 | (defun isearch-exit () | |
609 | "Exit search normally. | |
610 | However, if this is the first command after starting incremental | |
611 | search and `search-nonincremental-instead' is non-nil, do a | |
08200510 | 612 | nonincremental search instead via `isearch-edit-string'." |
8e1cae6d JB |
613 | (interactive) |
614 | (if (and search-nonincremental-instead | |
615 | (= 0 (length isearch-string))) | |
08200510 RS |
616 | (let ((isearch-nonincremental t)) |
617 | (isearch-edit-string))) | |
8e1cae6d JB |
618 | (isearch-done)) |
619 | ||
620 | ||
621 | (defun isearch-edit-string () | |
08200510 RS |
622 | "Edit the search string in the minibuffer. |
623 | The following additional command keys are active while editing. | |
624 | \\<minibuffer-local-isearch-map> | |
625 | \\[exit-minibuffer] to resume incremental searching with the edited string. | |
626 | \\[isearch-nonincremental-exit-minibuffer] to do one nonincremental search. | |
627 | \\[isearch-forward-exit-minibuffer] to resume isearching forward. | |
8eb40e74 | 628 | \\[isearch-reverse-exit-minibuffer] to resume isearching backward. |
08200510 | 629 | \\[isearch-ring-advance-edit] to replace the search string with the next item in the search ring. |
eb8c3be9 | 630 | \\[isearch-ring-retreat-edit] to replace the search string with the previous item in the search ring. |
08200510 | 631 | \\[isearch-complete-edit] to complete the search string using the search ring. |
8eb40e74 | 632 | \\<isearch-mode-map> |
08200510 RS |
633 | If first char entered is \\[isearch-yank-word], then do word search instead." |
634 | ||
635 | ;; This code is very hairy for several reasons, explained in the code. | |
636 | ;; Mainly, isearch-mode must be terminated while editing and then restarted. | |
637 | ;; If there were a way to catch any change of buffer from the minibuffer, | |
638 | ;; this could be simplified greatly. | |
eb8c3be9 | 639 | ;; Editing doesn't back up the search point. Should it? |
8e1cae6d | 640 | (interactive) |
08200510 | 641 | (condition-case err |
a9a5a9fa | 642 | (let ((isearch-nonincremental isearch-nonincremental) |
08200510 RS |
643 | |
644 | ;; Locally bind all isearch global variables to protect them | |
645 | ;; from recursive isearching. | |
646 | ;; isearch-string -message and -forward are not bound | |
647 | ;; so they may be changed. Instead, save the values. | |
648 | (isearch-new-string isearch-string) | |
649 | (isearch-new-message isearch-message) | |
650 | (isearch-new-forward isearch-forward) | |
651 | (isearch-new-word isearch-word) | |
652 | ||
653 | (isearch-regexp isearch-regexp) | |
654 | (isearch-op-fun isearch-op-fun) | |
655 | (isearch-cmds isearch-cmds) | |
656 | (isearch-success isearch-success) | |
657 | (isearch-wrapped isearch-wrapped) | |
658 | (isearch-barrier isearch-barrier) | |
659 | (isearch-adjusted isearch-adjusted) | |
660 | (isearch-yank-flag isearch-yank-flag) | |
661 | (isearch-invalid-regexp isearch-invalid-regexp) | |
c5f6b356 | 662 | (isearch-within-brackets isearch-within-brackets) |
0f09b616 KH |
663 | ;;; Don't bind this. We want isearch-search, below, to set it. |
664 | ;;; And the old value won't matter after that. | |
665 | ;;; (isearch-other-end isearch-other-end) | |
666 | ;;; Perhaps some of these other variables should be bound for a | |
667 | ;;; shorter period, ending before the next isearch-search. | |
668 | ;;; But there doesn't seem to be a real bug, so let's not risk it now. | |
08200510 RS |
669 | (isearch-opoint isearch-opoint) |
670 | (isearch-slow-terminal-mode isearch-slow-terminal-mode) | |
671 | (isearch-small-window isearch-small-window) | |
672 | (isearch-recursive-edit isearch-recursive-edit) | |
673 | ;; Save current configuration so we can restore it here. | |
674 | (isearch-window-configuration (current-window-configuration)) | |
675 | ) | |
676 | ||
677 | ;; Actually terminate isearching until editing is done. | |
678 | ;; This is so that the user can do anything without failure, | |
679 | ;; like switch buffers and start another isearch, and return. | |
680 | (condition-case err | |
0daa17f3 | 681 | (isearch-done t t) |
08200510 RS |
682 | (exit nil)) ; was recursive editing |
683 | ||
684 | (isearch-message) ;; for read-char | |
685 | (unwind-protect | |
686 | (let* (;; Why does following read-char echo? | |
687 | ;;(echo-keystrokes 0) ;; not needed with above message | |
d94307ee | 688 | (e (let ((cursor-in-echo-area t)) |
235beb32 | 689 | (read-event))) |
08200510 RS |
690 | ;; Binding minibuffer-history-symbol to nil is a work-around |
691 | ;; for some incompatibility with gmhist. | |
a56687f1 KH |
692 | (minibuffer-history-symbol) |
693 | (message-log-max nil)) | |
08200510 RS |
694 | ;; If the first character the user types when we prompt them |
695 | ;; for a string is the yank-word character, then go into | |
696 | ;; word-search mode. Otherwise unread that character and | |
697 | ;; read a key the normal way. | |
698 | ;; Word search does not apply (yet) to regexp searches, | |
699 | ;; no check is made here. | |
700 | (message (isearch-message-prefix nil nil t)) | |
701 | (if (eq 'isearch-yank-word | |
235beb32 | 702 | (lookup-key isearch-mode-map (vector e))) |
08200510 RS |
703 | (setq isearch-word t ;; so message-prefix is right |
704 | isearch-new-word t) | |
705 | (isearch-unread e)) | |
a5dcf63f RS |
706 | (setq cursor-in-echo-area nil) |
707 | (setq isearch-new-string | |
35a4d143 | 708 | (let (junk-ring) |
71e2ab54 RS |
709 | (read-from-minibuffer |
710 | (isearch-message-prefix nil nil isearch-nonincremental) | |
711 | isearch-string | |
712 | minibuffer-local-isearch-map nil | |
713 | 'junk-ring)) | |
7e846b10 RS |
714 | isearch-new-message |
715 | (mapconcat 'isearch-text-char-description | |
716 | isearch-new-string ""))) | |
08200510 RS |
717 | ;; Always resume isearching by restarting it. |
718 | (isearch-mode isearch-forward | |
719 | isearch-regexp | |
720 | isearch-op-fun | |
0daa17f3 | 721 | nil |
08200510 RS |
722 | isearch-word) |
723 | ||
724 | ;; Copy new local values to isearch globals | |
725 | (setq isearch-string isearch-new-string | |
726 | isearch-message isearch-new-message | |
727 | isearch-forward isearch-new-forward | |
728 | isearch-word isearch-new-word)) | |
729 | ||
730 | ;; Empty isearch-string means use default. | |
731 | (if (= 0 (length isearch-string)) | |
f3acf6f5 RS |
732 | (setq isearch-string (or (car (if isearch-regexp |
733 | regexp-search-ring | |
734 | search-ring)) | |
735 | "")) | |
a8f783b2 RS |
736 | ;; This used to set the last search string, |
737 | ;; but I think it is not right to do that here. | |
738 | ;; Only the string actually used should be saved. | |
739 | ) | |
08200510 RS |
740 | |
741 | ;; Reinvoke the pending search. | |
742 | (isearch-push-state) | |
743 | (isearch-search) | |
744 | (isearch-update) | |
745 | (if isearch-nonincremental | |
746 | (progn | |
747 | ;; (sit-for 1) ;; needed if isearch-done does: (message "") | |
748 | (isearch-done)))) | |
8e1cae6d | 749 | |
08200510 RS |
750 | (quit ; handle abort-recursive-edit |
751 | (isearch-abort) ;; outside of let to restore outside global values | |
752 | ))) | |
753 | ||
754 | (defun isearch-nonincremental-exit-minibuffer () | |
755 | (interactive) | |
756 | (setq isearch-nonincremental t) | |
757 | (exit-minibuffer)) | |
758 | ||
759 | (defun isearch-forward-exit-minibuffer () | |
760 | (interactive) | |
761 | (setq isearch-new-forward t) | |
762 | (exit-minibuffer)) | |
8e1cae6d | 763 | |
08200510 | 764 | (defun isearch-reverse-exit-minibuffer () |
8e1cae6d | 765 | (interactive) |
08200510 RS |
766 | (setq isearch-new-forward nil) |
767 | (exit-minibuffer)) | |
768 | ||
19993c54 RS |
769 | (defun isearch-cancel () |
770 | "Terminate the search and go back to the starting point." | |
771 | (interactive) | |
772 | (goto-char isearch-opoint) | |
773 | (isearch-done t) | |
774 | (signal 'quit nil)) ; and pass on quit signal | |
08200510 RS |
775 | |
776 | (defun isearch-abort () | |
777 | "Abort incremental search mode if searching is successful, signalling quit. | |
778 | Otherwise, revert to previous successful search and continue searching. | |
779 | Use `isearch-exit' to quit without signalling." | |
780 | (interactive) | |
eb8c3be9 | 781 | ;; (ding) signal instead below, if quitting |
8e1cae6d JB |
782 | (discard-input) |
783 | (if isearch-success | |
784 | ;; If search is successful, move back to starting point | |
785 | ;; and really do quit. | |
786 | (progn (goto-char isearch-opoint) | |
509ed182 | 787 | (setq isearch-success nil) |
35a4d143 | 788 | (isearch-done t) ; exit isearch |
a5dcf63f | 789 | (signal 'quit nil)) ; and pass on quit signal |
925a67ca RS |
790 | ;; If search is failing, or has an incomplete regexp, |
791 | ;; rub out until it is once more successful. | |
792 | (while (or (not isearch-success) isearch-invalid-regexp) | |
793 | (isearch-pop-state)) | |
8e1cae6d JB |
794 | (isearch-update))) |
795 | ||
8e1cae6d JB |
796 | (defun isearch-repeat (direction) |
797 | ;; Utility for isearch-repeat-forward and -backward. | |
798 | (if (eq isearch-forward (eq direction 'forward)) | |
799 | ;; C-s in forward or C-r in reverse. | |
800 | (if (equal isearch-string "") | |
801 | ;; If search string is empty, use last one. | |
802 | (setq isearch-string | |
8e1cae6d | 803 | (or (if isearch-regexp |
a5dcf63f RS |
804 | (car regexp-search-ring) |
805 | (car search-ring)) | |
8e1cae6d JB |
806 | "") |
807 | isearch-message | |
08200510 | 808 | (mapconcat 'isearch-text-char-description |
8e1cae6d JB |
809 | isearch-string "")) |
810 | ;; If already have what to search for, repeat it. | |
811 | (or isearch-success | |
812 | (progn | |
813 | ||
814 | (goto-char (if isearch-forward (point-min) (point-max))) | |
815 | (setq isearch-wrapped t)))) | |
816 | ;; C-s in reverse or C-r in forward, change direction. | |
817 | (setq isearch-forward (not isearch-forward))) | |
818 | ||
819 | (setq isearch-barrier (point)) ; For subsequent \| if regexp. | |
6fefdc4b RS |
820 | |
821 | (if (equal isearch-string "") | |
822 | (setq isearch-success t) | |
99ae9e9f KH |
823 | (if (and isearch-success (equal (match-end 0) (match-beginning 0)) |
824 | (not isearch-just-started)) | |
8e1cae6d JB |
825 | ;; If repeating a search that found |
826 | ;; an empty string, ensure we advance. | |
6fefdc4b RS |
827 | (if (if isearch-forward (eobp) (bobp)) |
828 | ;; If there's nowhere to advance to, fail (and wrap next time). | |
829 | (progn | |
830 | (setq isearch-success nil) | |
831 | (ding)) | |
832 | (forward-char (if isearch-forward 1 -1)) | |
833 | (isearch-search)) | |
834 | (isearch-search))) | |
835 | ||
8e1cae6d JB |
836 | (isearch-push-state) |
837 | (isearch-update)) | |
838 | ||
839 | (defun isearch-repeat-forward () | |
840 | "Repeat incremental search forwards." | |
841 | (interactive) | |
842 | (isearch-repeat 'forward)) | |
843 | ||
844 | (defun isearch-repeat-backward () | |
845 | "Repeat incremental search backwards." | |
846 | (interactive) | |
847 | (isearch-repeat 'backward)) | |
848 | ||
849 | (defun isearch-toggle-regexp () | |
850 | "Toggle regexp searching on or off." | |
851 | ;; The status stack is left unchanged. | |
852 | (interactive) | |
853 | (setq isearch-regexp (not isearch-regexp)) | |
08200510 | 854 | (if isearch-regexp (setq isearch-word nil)) |
8e1cae6d JB |
855 | (isearch-update)) |
856 | ||
4453091d RS |
857 | (defun isearch-toggle-case-fold () |
858 | "Toggle case folding in searching on or off." | |
859 | (interactive) | |
860 | (setq isearch-case-fold-search | |
861 | (if isearch-case-fold-search nil 'yes)) | |
a56687f1 KH |
862 | (let ((message-log-max nil)) |
863 | (message "%s%s [case %ssensitive]" | |
864 | (isearch-message-prefix nil nil isearch-nonincremental) | |
865 | isearch-message | |
866 | (if isearch-case-fold-search "in" ""))) | |
4453091d RS |
867 | (setq isearch-adjusted t) |
868 | (sit-for 1) | |
869 | (isearch-update)) | |
870 | ||
8e1cae6d JB |
871 | (defun isearch-delete-char () |
872 | "Discard last input item and move point back. | |
873 | If no previous match was done, just beep." | |
874 | (interactive) | |
875 | (if (null (cdr isearch-cmds)) | |
876 | (ding) | |
877 | (isearch-pop-state)) | |
878 | (isearch-update)) | |
879 | ||
880 | ||
881 | (defun isearch-yank (chunk) | |
882 | ;; Helper for isearch-yank-word and isearch-yank-line | |
30d47262 RS |
883 | ;; CHUNK should be word, line or kill. |
884 | (let ((string (cond | |
885 | ((eq chunk 'kill) | |
886 | (current-kill 0)) | |
887 | (t | |
888 | (save-excursion | |
889 | (and (not isearch-forward) isearch-other-end | |
890 | (goto-char isearch-other-end)) | |
891 | (buffer-substring | |
892 | (point) | |
893 | (save-excursion | |
894 | (cond | |
895 | ((eq chunk 'word) | |
896 | (forward-word 1)) | |
897 | ((eq chunk 'line) | |
898 | (end-of-line))) | |
899 | (point)))))))) | |
08200510 RS |
900 | ;; Downcase the string if not supposed to case-fold yanked strings. |
901 | (if (and isearch-case-fold-search | |
fdf5afa4 | 902 | (eq 'not-yanks search-upper-case)) |
08200510 RS |
903 | (setq string (downcase string))) |
904 | (if isearch-regexp (setq string (regexp-quote string))) | |
905 | (setq isearch-string (concat isearch-string string) | |
8e1cae6d JB |
906 | isearch-message |
907 | (concat isearch-message | |
08200510 RS |
908 | (mapconcat 'isearch-text-char-description |
909 | string "")) | |
8e1cae6d JB |
910 | ;; Don't move cursor in reverse search. |
911 | isearch-yank-flag t)) | |
912 | (isearch-search-and-update)) | |
913 | ||
30d47262 RS |
914 | (defun isearch-yank-kill () |
915 | "Pull string from kill ring into search string." | |
916 | (interactive) | |
917 | (isearch-yank 'kill)) | |
8e1cae6d JB |
918 | |
919 | (defun isearch-yank-word () | |
920 | "Pull next word from buffer into search string." | |
921 | (interactive) | |
922 | (isearch-yank 'word)) | |
923 | ||
924 | (defun isearch-yank-line () | |
925 | "Pull rest of line from buffer into search string." | |
926 | (interactive) | |
927 | (isearch-yank 'line)) | |
928 | ||
929 | ||
930 | (defun isearch-search-and-update () | |
931 | ;; Do the search and update the display. | |
932 | (if (and (not isearch-success) | |
933 | ;; unsuccessful regexp search may become | |
934 | ;; successful by addition of characters which | |
935 | ;; make isearch-string valid | |
936 | (not isearch-regexp)) | |
937 | nil | |
938 | ;; In reverse search, adding stuff at | |
939 | ;; the end may cause zero or many more chars to be | |
940 | ;; matched, in the string following point. | |
941 | ;; Allow all those possibilities without moving point as | |
942 | ;; long as the match does not extend past search origin. | |
943 | (if (and (not isearch-forward) (not isearch-adjusted) | |
944 | (condition-case () | |
99ae9e9f KH |
945 | (let ((case-fold-search isearch-case-fold-search)) |
946 | (looking-at (if isearch-regexp isearch-string | |
947 | (regexp-quote isearch-string)))) | |
8e1cae6d JB |
948 | (error nil)) |
949 | (or isearch-yank-flag | |
950 | (<= (match-end 0) | |
951 | (min isearch-opoint isearch-barrier)))) | |
952 | (setq isearch-success t | |
953 | isearch-invalid-regexp nil | |
c5f6b356 | 954 | isearch-within-brackets nil |
8e1cae6d JB |
955 | isearch-other-end (match-end 0)) |
956 | ;; Not regexp, not reverse, or no match at point. | |
957 | (if (and isearch-other-end (not isearch-adjusted)) | |
958 | (goto-char (if isearch-forward isearch-other-end | |
959 | (min isearch-opoint | |
960 | isearch-barrier | |
961 | (1+ isearch-other-end))))) | |
962 | (isearch-search) | |
963 | )) | |
964 | (isearch-push-state) | |
965 | (if isearch-op-fun (funcall isearch-op-fun)) | |
966 | (isearch-update)) | |
967 | ||
968 | ||
969 | ;; *, ?, and | chars can make a regexp more liberal. | |
08200510 | 970 | ;; They can make a regexp match sooner or make it succeed instead of failing. |
8e1cae6d JB |
971 | ;; So go back to place last successful search started |
972 | ;; or to the last ^S/^R (barrier), whichever is nearer. | |
08200510 | 973 | ;; + needs no special handling because the string must match at least once. |
8e1cae6d JB |
974 | |
975 | (defun isearch-*-char () | |
976 | "Handle * and ? specially in regexps." | |
977 | (interactive) | |
978 | (if isearch-regexp | |
979 | ||
980 | (progn | |
981 | (setq isearch-adjusted t) | |
982 | (let ((cs (nth (if isearch-forward | |
983 | 5 ; isearch-other-end | |
984 | 2) ; saved (point) | |
985 | (car (cdr isearch-cmds))))) | |
986 | ;; (car isearch-cmds) is after last search; | |
987 | ;; (car (cdr isearch-cmds)) is from before it. | |
988 | (setq cs (or cs isearch-barrier)) | |
989 | (goto-char | |
990 | (if isearch-forward | |
991 | (max cs isearch-barrier) | |
992 | (min cs isearch-barrier)))))) | |
08200510 | 993 | (isearch-process-search-char (isearch-last-command-char))) |
8e1cae6d JB |
994 | |
995 | ||
8e1cae6d JB |
996 | (defun isearch-|-char () |
997 | "If in regexp search, jump to the barrier." | |
998 | (interactive) | |
999 | (if isearch-regexp | |
1000 | (progn | |
1001 | (setq isearch-adjusted t) | |
1002 | (goto-char isearch-barrier))) | |
08200510 | 1003 | (isearch-process-search-char (isearch-last-command-char))) |
8e1cae6d JB |
1004 | |
1005 | ||
b457cc3b | 1006 | (defalias 'isearch-other-control-char 'isearch-other-meta-char) |
8e1cae6d JB |
1007 | |
1008 | (defun isearch-other-meta-char () | |
8f90f594 | 1009 | "Exit the search normally and reread this key sequence. |
35a4d143 RS |
1010 | But only if `search-exit-option' is non-nil, the default. |
1011 | If it is the symbol `edit', the search string is edited in the minibuffer | |
1012 | and the meta character is unread so that it applies to editing the string." | |
8e1cae6d | 1013 | (interactive) |
c6431f12 KH |
1014 | (let* ((key (this-command-keys)) |
1015 | (main-event (aref key 0)) | |
1016 | (keylist (listify-key-sequence key))) | |
24b5caec | 1017 | (cond ((and (= (length key) 1) |
d94eb6eb RS |
1018 | (let ((lookup (lookup-key function-key-map key))) |
1019 | (not (or (null lookup) (integerp lookup))))) | |
24b5caec RS |
1020 | ;; Handle a function key that translates into something else. |
1021 | ;; If the key has a global definition too, | |
1022 | ;; exit and unread the key itself, so its global definition runs. | |
1023 | ;; Otherwise, unread the translation, | |
1024 | ;; so that the translated key takes effect within isearch. | |
d94eb6eb | 1025 | (cancel-kbd-macro-events) |
24b5caec RS |
1026 | (if (lookup-key global-map key) |
1027 | (progn | |
1028 | (isearch-done) | |
1029 | (apply 'isearch-unread keylist)) | |
1030 | (apply 'isearch-unread | |
1031 | (listify-key-sequence (lookup-key function-key-map key))))) | |
1032 | ( | |
c6431f12 KH |
1033 | ;; Handle an undefined shifted control character |
1034 | ;; by downshifting it if that makes it defined. | |
1035 | ;; (As read-key-sequence would normally do, | |
1036 | ;; if we didn't have a default definition.) | |
1037 | (let ((mods (event-modifiers main-event))) | |
1038 | (and (integerp main-event) | |
1039 | (memq 'shift mods) | |
1040 | (memq 'control mods) | |
1041 | (lookup-key isearch-mode-map | |
1042 | (let ((copy (copy-sequence key))) | |
1043 | (aset copy 0 | |
1044 | (- main-event (- ?\C-\S-a ?\C-a))) | |
1045 | copy) | |
1046 | nil))) | |
1047 | (setcar keylist (- main-event (- ?\C-\S-a ?\C-a))) | |
d94eb6eb | 1048 | (cancel-kbd-macro-events) |
c6431f12 KH |
1049 | (apply 'isearch-unread keylist)) |
1050 | ((eq search-exit-option 'edit) | |
1051 | (apply 'isearch-unread keylist) | |
1052 | (isearch-edit-string)) | |
1053 | (search-exit-option | |
1054 | (let (window) | |
d94eb6eb | 1055 | (cancel-kbd-macro-events) |
c6431f12 KH |
1056 | (apply 'isearch-unread keylist) |
1057 | ;; Properly handle scroll-bar and mode-line clicks | |
1058 | ;; for which a dummy prefix event was generated as (aref key 0). | |
1059 | (and (> (length key) 1) | |
1060 | (symbolp (aref key 0)) | |
1061 | (listp (aref key 1)) | |
1062 | (not (numberp (posn-point (event-start (aref key 1))))) | |
1063 | ;; Convert the event back into its raw form, | |
1064 | ;; with the dummy prefix implicit in the mouse event, | |
1065 | ;; so it will get split up once again. | |
1066 | (progn (setq unread-command-events | |
1067 | (cdr unread-command-events)) | |
1068 | (setq main-event (car unread-command-events)) | |
1069 | (setcar (cdr (event-start main-event)) | |
1070 | (car (nth 1 (event-start main-event)))))) | |
1071 | ;; If we got a mouse click, maybe it was read with the buffer | |
1072 | ;; it was clicked on. If so, that buffer, not the current one, | |
1073 | ;; is in isearch mode. So end the search in that buffer. | |
1074 | (if (and (listp main-event) | |
1075 | (setq window (posn-window (event-start main-event))) | |
1076 | (windowp window)) | |
1077 | (save-excursion | |
1078 | (set-buffer (window-buffer window)) | |
1079 | (isearch-done)) | |
1080 | (isearch-done)))) | |
1081 | (t;; otherwise nil | |
1082 | (isearch-process-search-string key key))))) | |
8e1cae6d | 1083 | |
8e1cae6d JB |
1084 | (defun isearch-quote-char () |
1085 | "Quote special characters for incremental search." | |
1086 | (interactive) | |
1087 | (isearch-process-search-char (read-quoted-char (isearch-message t)))) | |
1088 | ||
8e1cae6d JB |
1089 | (defun isearch-return-char () |
1090 | "Convert return into newline for incremental search. | |
1091 | Obsolete." | |
1092 | (interactive) | |
1093 | (isearch-process-search-char ?\n)) | |
1094 | ||
8e1cae6d | 1095 | (defun isearch-printing-char () |
b68c164d | 1096 | "Add this ordinary printing character to the search string and search." |
8e1cae6d | 1097 | (interactive) |
08200510 | 1098 | (isearch-process-search-char (isearch-last-command-char))) |
8e1cae6d JB |
1099 | |
1100 | (defun isearch-whitespace-chars () | |
08200510 | 1101 | "Match all whitespace chars, if in regexp mode. |
b68c164d | 1102 | If you want to search for just a space, type C-q SPC." |
8e1cae6d | 1103 | (interactive) |
08200510 | 1104 | (if isearch-regexp |
c5f6b356 | 1105 | (if (and search-whitespace-regexp (not isearch-within-brackets)) |
08200510 RS |
1106 | (isearch-process-search-string search-whitespace-regexp " ") |
1107 | (isearch-printing-char)) | |
1108 | (progn | |
eb8c3be9 | 1109 | ;; This way of doing word search doesn't correctly extend current search. |
08200510 RS |
1110 | ;; (setq isearch-word t) |
1111 | ;; (setq isearch-adjusted t) | |
1112 | ;; (goto-char isearch-barrier) | |
1113 | (isearch-printing-char)))) | |
8e1cae6d JB |
1114 | |
1115 | (defun isearch-process-search-char (char) | |
1116 | ;; Append the char to the search string, update the message and re-search. | |
08200510 RS |
1117 | (isearch-process-search-string |
1118 | (isearch-char-to-string char) | |
1119 | (isearch-text-char-description char))) | |
8e1cae6d JB |
1120 | |
1121 | (defun isearch-process-search-string (string message) | |
1122 | (setq isearch-string (concat isearch-string string) | |
1123 | isearch-message (concat isearch-message message)) | |
1124 | (isearch-search-and-update)) | |
1125 | ||
1126 | \f | |
1127 | ;;=========================================================== | |
1128 | ;; Search Ring | |
1129 | ||
08200510 RS |
1130 | (defun isearch-ring-adjust1 (advance) |
1131 | ;; Helper for isearch-ring-adjust | |
1132 | (let* ((ring (if isearch-regexp regexp-search-ring search-ring)) | |
8e1cae6d JB |
1133 | (length (length ring)) |
1134 | (yank-pointer-name (if isearch-regexp | |
08200510 | 1135 | 'regexp-search-ring-yank-pointer |
8e1cae6d JB |
1136 | 'search-ring-yank-pointer)) |
1137 | (yank-pointer (eval yank-pointer-name))) | |
1138 | (if (zerop length) | |
1139 | () | |
1140 | (set yank-pointer-name | |
1141 | (setq yank-pointer | |
ffbc30b2 PE |
1142 | (mod (+ (or yank-pointer 0) |
1143 | (if advance -1 1)) | |
1144 | length))) | |
a5dcf63f | 1145 | (setq isearch-string (nth yank-pointer ring) |
08200510 RS |
1146 | isearch-message (mapconcat 'isearch-text-char-description |
1147 | isearch-string ""))))) | |
1148 | ||
1149 | (defun isearch-ring-adjust (advance) | |
1150 | ;; Helper for isearch-ring-advance and isearch-ring-retreat | |
1151 | (if (cdr isearch-cmds) ;; is there more than one thing on stack? | |
1152 | (isearch-pop-state)) | |
1153 | (isearch-ring-adjust1 advance) | |
8e1cae6d | 1154 | (isearch-push-state) |
08200510 RS |
1155 | (if search-ring-update |
1156 | (progn | |
1157 | (isearch-search) | |
1158 | (isearch-update)) | |
1159 | (isearch-edit-string) | |
1160 | )) | |
8e1cae6d JB |
1161 | |
1162 | (defun isearch-ring-advance () | |
1163 | "Advance to the next search string in the ring." | |
08200510 | 1164 | ;; This could be more general to handle a prefix arg, but who would use it. |
8e1cae6d JB |
1165 | (interactive) |
1166 | (isearch-ring-adjust 'advance)) | |
1167 | ||
1168 | (defun isearch-ring-retreat () | |
1169 | "Retreat to the previous search string in the ring." | |
1170 | (interactive) | |
1171 | (isearch-ring-adjust nil)) | |
1172 | ||
a5dcf63f RS |
1173 | (defun isearch-ring-advance-edit (n) |
1174 | "Insert the next element of the search history into the minibuffer." | |
1175 | (interactive "p") | |
1176 | (let* ((yank-pointer-name (if isearch-regexp | |
1177 | 'regexp-search-ring-yank-pointer | |
1178 | 'search-ring-yank-pointer)) | |
1179 | (yank-pointer (eval yank-pointer-name)) | |
1180 | (ring (if isearch-regexp regexp-search-ring search-ring)) | |
1181 | (length (length ring))) | |
1182 | (if (zerop length) | |
1183 | () | |
1184 | (set yank-pointer-name | |
1185 | (setq yank-pointer | |
ffbc30b2 PE |
1186 | (mod (- (or yank-pointer 0) n) |
1187 | length))) | |
a5dcf63f | 1188 | |
a5dcf63f | 1189 | (erase-buffer) |
35a4d143 | 1190 | (insert (nth yank-pointer ring)) |
49c13105 | 1191 | (goto-char (point-max))))) |
a5dcf63f RS |
1192 | |
1193 | (defun isearch-ring-retreat-edit (n) | |
1194 | "Inserts the previous element of the search history into the minibuffer." | |
1195 | (interactive "p") | |
1196 | (isearch-ring-advance-edit (- n))) | |
1197 | ||
1198 | ;;(defun isearch-ring-adjust-edit (advance) | |
1199 | ;; "Use the next or previous search string in the ring while in minibuffer." | |
1200 | ;; (isearch-ring-adjust1 advance) | |
1201 | ;; (erase-buffer) | |
1202 | ;; (insert isearch-string)) | |
1203 | ||
1204 | ;;(defun isearch-ring-advance-edit () | |
1205 | ;; (interactive) | |
1206 | ;; (isearch-ring-adjust-edit 'advance)) | |
1207 | ||
1208 | ;;(defun isearch-ring-retreat-edit () | |
1209 | ;; "Retreat to the previous search string in the ring while in the minibuffer." | |
1210 | ;; (interactive) | |
1211 | ;; (isearch-ring-adjust-edit nil)) | |
08200510 RS |
1212 | |
1213 | ||
1214 | (defun isearch-complete1 () | |
1215 | ;; Helper for isearch-complete and isearch-complete-edit | |
1216 | ;; Return t if completion OK, nil if no completion exists. | |
1217 | (let* ((ring (if isearch-regexp regexp-search-ring search-ring)) | |
1218 | (alist (mapcar (function (lambda (string) (list string))) ring)) | |
1219 | (completion-ignore-case case-fold-search) | |
1220 | (completion (try-completion isearch-string alist))) | |
1221 | (cond | |
1222 | ((eq completion t) | |
1223 | ;; isearch-string stays the same | |
1224 | t) | |
1225 | ((or completion ; not nil, must be a string | |
1226 | (= 0 (length isearch-string))) ; shouldnt have to say this | |
1227 | (if (equal completion isearch-string) ;; no extension? | |
1228 | (if completion-auto-help | |
1229 | (with-output-to-temp-buffer "*Isearch completions*" | |
1230 | (display-completion-list | |
1231 | (all-completions isearch-string alist)))) | |
1232 | (setq isearch-string completion)) | |
1233 | t) | |
1234 | (t | |
1235 | (message "No completion") ; waits a second if in minibuffer | |
1236 | nil)))) | |
1237 | ||
1238 | (defun isearch-complete () | |
1239 | "Complete the search string from the strings on the search ring. | |
1240 | The completed string is then editable in the minibuffer. | |
1241 | If there is no completion possible, say so and continue searching." | |
1242 | (interactive) | |
1243 | (if (isearch-complete1) | |
1244 | (isearch-edit-string) | |
1245 | ;; else | |
1246 | (sit-for 1) | |
1247 | (isearch-update))) | |
8e1cae6d | 1248 | |
08200510 RS |
1249 | (defun isearch-complete-edit () |
1250 | "Same as `isearch-complete' except in the minibuffer." | |
1251 | (interactive) | |
1252 | (setq isearch-string (buffer-string)) | |
1253 | (if (isearch-complete1) | |
8e1cae6d | 1254 | (progn |
08200510 RS |
1255 | (erase-buffer) |
1256 | (insert isearch-string)))) | |
8e1cae6d JB |
1257 | |
1258 | \f | |
1259 | ;;;============================================================== | |
1260 | ;; The search status stack (and isearch window-local variables, not used). | |
08200510 | 1261 | ;; Need a structure for this. |
8e1cae6d JB |
1262 | |
1263 | (defun isearch-top-state () | |
8e1cae6d JB |
1264 | (let ((cmd (car isearch-cmds))) |
1265 | (setq isearch-string (car cmd) | |
1266 | isearch-message (car (cdr cmd)) | |
1267 | isearch-success (nth 3 cmd) | |
1268 | isearch-forward (nth 4 cmd) | |
1269 | isearch-other-end (nth 5 cmd) | |
08200510 RS |
1270 | isearch-word (nth 6 cmd) |
1271 | isearch-invalid-regexp (nth 7 cmd) | |
1272 | isearch-wrapped (nth 8 cmd) | |
c5f6b356 | 1273 | isearch-barrier (nth 9 cmd) |
f551b97d RS |
1274 | isearch-within-brackets (nth 10 cmd) |
1275 | isearch-case-fold-search (nth 11 cmd)) | |
8e1cae6d JB |
1276 | (goto-char (car (cdr (cdr cmd)))))) |
1277 | ||
1278 | (defun isearch-pop-state () | |
8e1cae6d JB |
1279 | (setq isearch-cmds (cdr isearch-cmds)) |
1280 | (isearch-top-state) | |
1281 | ) | |
1282 | ||
1283 | (defun isearch-push-state () | |
1284 | (setq isearch-cmds | |
1285 | (cons (list isearch-string isearch-message (point) | |
1286 | isearch-success isearch-forward isearch-other-end | |
08200510 | 1287 | isearch-word |
c5f6b356 | 1288 | isearch-invalid-regexp isearch-wrapped isearch-barrier |
f551b97d | 1289 | isearch-within-brackets isearch-case-fold-search) |
8e1cae6d JB |
1290 | isearch-cmds))) |
1291 | ||
8e1cae6d JB |
1292 | \f |
1293 | ;;;================================================================== | |
1294 | ;; Message string | |
1295 | ||
1296 | (defun isearch-message (&optional c-q-hack ellipsis) | |
1297 | ;; Generate and print the message string. | |
1298 | (let ((cursor-in-echo-area ellipsis) | |
1299 | (m (concat | |
08200510 | 1300 | (isearch-message-prefix c-q-hack ellipsis isearch-nonincremental) |
8e1cae6d JB |
1301 | isearch-message |
1302 | (isearch-message-suffix c-q-hack ellipsis) | |
1303 | ))) | |
a56687f1 KH |
1304 | (if c-q-hack |
1305 | m | |
1306 | (let ((message-log-max nil)) | |
1307 | (message "%s" m))))) | |
8e1cae6d | 1308 | |
08200510 | 1309 | (defun isearch-message-prefix (&optional c-q-hack ellipsis nonincremental) |
8e1cae6d JB |
1310 | ;; If about to search, and previous search regexp was invalid, |
1311 | ;; check that it still is. If it is valid now, | |
1312 | ;; let the message we display while searching say that it is valid. | |
1313 | (and isearch-invalid-regexp ellipsis | |
1314 | (condition-case () | |
1315 | (progn (re-search-forward isearch-string (point) t) | |
8eb40e74 KH |
1316 | (setq isearch-invalid-regexp nil |
1317 | isearch-within-brackets nil)) | |
8e1cae6d JB |
1318 | (error nil))) |
1319 | ;; If currently failing, display no ellipsis. | |
1320 | (or isearch-success (setq ellipsis nil)) | |
1321 | (let ((m (concat (if isearch-success "" "failing ") | |
7badea30 RS |
1322 | (if (and isearch-wrapped |
1323 | (if isearch-forward | |
1324 | (> (point) isearch-opoint) | |
1325 | (< (point) isearch-opoint))) | |
1326 | "over") | |
8e1cae6d | 1327 | (if isearch-wrapped "wrapped ") |
08200510 | 1328 | (if isearch-word "word " "") |
8e1cae6d | 1329 | (if isearch-regexp "regexp " "") |
08200510 | 1330 | (if nonincremental "search" "I-search") |
8e1cae6d JB |
1331 | (if isearch-forward ": " " backward: ") |
1332 | ))) | |
1333 | (aset m 0 (upcase (aref m 0))) | |
1334 | m)) | |
1335 | ||
1336 | ||
1337 | (defun isearch-message-suffix (&optional c-q-hack ellipsis) | |
1338 | (concat (if c-q-hack "^Q" "") | |
1339 | (if isearch-invalid-regexp | |
1340 | (concat " [" isearch-invalid-regexp "]") | |
1341 | ""))) | |
1342 | ||
1343 | \f | |
1344 | ;;;======================================================== | |
1345 | ;;; Searching | |
1346 | ||
1347 | (defun isearch-search () | |
1348 | ;; Do the search with the current search string. | |
1349 | (isearch-message nil t) | |
4453091d | 1350 | (if (and (eq isearch-case-fold-search t) search-upper-case) |
b78559b0 RS |
1351 | (setq isearch-case-fold-search |
1352 | (isearch-no-upper-case-p isearch-string isearch-regexp))) | |
8e1cae6d JB |
1353 | (condition-case lossage |
1354 | (let ((inhibit-quit nil) | |
1355 | (case-fold-search isearch-case-fold-search)) | |
1356 | (if isearch-regexp (setq isearch-invalid-regexp nil)) | |
c5f6b356 | 1357 | (setq isearch-within-brackets nil) |
8e1cae6d JB |
1358 | (setq isearch-success |
1359 | (funcall | |
08200510 RS |
1360 | (cond (isearch-word |
1361 | (if isearch-forward | |
1362 | 'word-search-forward 'word-search-backward)) | |
1363 | (isearch-regexp | |
1364 | (if isearch-forward | |
1365 | 're-search-forward 're-search-backward)) | |
1366 | (t | |
1367 | (if isearch-forward 'search-forward 'search-backward))) | |
8e1cae6d | 1368 | isearch-string nil t)) |
99ae9e9f | 1369 | (setq isearch-just-started nil) |
8e1cae6d JB |
1370 | (if isearch-success |
1371 | (setq isearch-other-end | |
1372 | (if isearch-forward (match-beginning 0) (match-end 0))))) | |
1373 | ||
d32696d4 | 1374 | (quit (isearch-unread ?\C-g) |
8e1cae6d JB |
1375 | (setq isearch-success nil)) |
1376 | ||
1377 | (invalid-regexp | |
1378 | (setq isearch-invalid-regexp (car (cdr lossage))) | |
c5f6b356 RS |
1379 | (setq isearch-within-brackets (string-match "\\`Unmatched \\[" |
1380 | isearch-invalid-regexp)) | |
8e1cae6d JB |
1381 | (if (string-match |
1382 | "\\`Premature \\|\\`Unmatched \\|\\`Invalid " | |
1383 | isearch-invalid-regexp) | |
f1c03125 RS |
1384 | (setq isearch-invalid-regexp "incomplete input"))) |
1385 | (error | |
1386 | ;; stack overflow in regexp search. | |
1387 | (setq isearch-invalid-regexp (car (cdr lossage))))) | |
8e1cae6d JB |
1388 | |
1389 | (if isearch-success | |
1390 | nil | |
1391 | ;; Ding if failed this time after succeeding last time. | |
1392 | (and (nth 3 (car isearch-cmds)) | |
1393 | (ding)) | |
1394 | (goto-char (nth 2 (car isearch-cmds))))) | |
1395 | ||
08200510 RS |
1396 | |
1397 | \f | |
1398 | ;;;======================================================== | |
1399 | ;;; Highlighting | |
1400 | ||
b78559b0 | 1401 | (defvar isearch-overlay nil) |
08200510 | 1402 | |
b78559b0 | 1403 | (defun isearch-highlight (beg end) |
f5f6a944 | 1404 | (if (or (null search-highlight) (null window-system)) |
08200510 | 1405 | nil |
b78559b0 RS |
1406 | (or isearch-overlay (setq isearch-overlay (make-overlay beg end))) |
1407 | (move-overlay isearch-overlay beg end (current-buffer)) | |
82318db5 RS |
1408 | (overlay-put isearch-overlay 'face |
1409 | (if (internal-find-face 'isearch nil) | |
1410 | 'isearch 'region)))) | |
b78559b0 RS |
1411 | |
1412 | (defun isearch-dehighlight (totally) | |
1413 | (if isearch-overlay | |
1414 | (delete-overlay isearch-overlay))) | |
08200510 RS |
1415 | |
1416 | ;;;=========================================================== | |
1417 | ;;; General utilities | |
1418 | ||
08200510 | 1419 | |
b78559b0 RS |
1420 | (defun isearch-no-upper-case-p (string regexp-flag) |
1421 | "Return t if there are no upper case chars in STRING. | |
1422 | If REGEXP-FLAG is non-nil, disregard letters preceeded by `\\' (but not `\\\\') | |
1423 | since they have special meaning in a regexp." | |
08200510 | 1424 | (let ((case-fold-search nil)) |
b78559b0 RS |
1425 | (not (string-match (if regexp-flag "\\(^\\|\\\\\\\\\\|[^\\]\\)[A-Z]" |
1426 | "[A-Z]") | |
1427 | string)))) | |
08200510 RS |
1428 | |
1429 | ||
8e1cae6d | 1430 | ;;;================================================= |
b78559b0 | 1431 | ;; Portability functions to support various Emacs versions. |
8e1cae6d | 1432 | |
08200510 RS |
1433 | ;; To quiet the byte-compiler. |
1434 | (defvar unread-command-event) | |
dbc4e1c1 | 1435 | (defvar unread-command-events) |
08200510 | 1436 | (defvar last-command-event) |
8e1cae6d | 1437 | |
08200510 | 1438 | (defun isearch-char-to-string (c) |
0cabad13 | 1439 | (make-string 1 c)) |
08200510 RS |
1440 | |
1441 | (defun isearch-text-char-description (c) | |
9d78ff8b RS |
1442 | (if (and (integerp c) (or (< c ?\ ) (= c ?\^?))) |
1443 | (text-char-description c) | |
1444 | (isearch-char-to-string c))) | |
08200510 | 1445 | |
bd1bd125 | 1446 | ;; General function to unread characters or events. |
99ae9e9f | 1447 | ;; Also insert them in a keyboard macro being defined. |
8f90f594 | 1448 | (defun isearch-unread (&rest char-or-events) |
99ae9e9f | 1449 | (mapcar 'store-kbd-macro-event char-or-events) |
bd1bd125 RS |
1450 | (setq unread-command-events |
1451 | (append char-or-events unread-command-events))) | |
08200510 RS |
1452 | |
1453 | (defun isearch-last-command-char () | |
1454 | ;; General function to return the last command character. | |
58451992 | 1455 | last-command-char) |
08200510 | 1456 | |
3b1e4dd1 | 1457 | ;;; isearch.el ends here |