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76550a57 | 1 | ;;; isearch.el --- incremental search minor mode. |
3b1e4dd1 | 2 | |
3a801d0c ER |
3 | ;; Copyright (C) 1992 Free Software Foundation, Inc. |
4 | ||
3b1e4dd1 ER |
5 | ;; Author: Daniel LaLiberte <liberte@cs.uiuc.edu> |
6 | ||
8d7e4e80 | 7 | ;; |$Date: 1993/04/23 07:31:14 $|$Revision: 1.31 $ |
8e1cae6d | 8 | |
08200510 RS |
9 | ;; This file is not yet part of GNU Emacs, but it is based almost |
10 | ;; entirely on isearch.el which is part of GNU Emacs. | |
8e1cae6d JB |
11 | |
12 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
13 | ;; but WITHOUT ANY WARRANTY. No author or distributor | |
14 | ;; accepts responsibility to anyone for the consequences of using it | |
15 | ;; or for whether it serves any particular purpose or works at all, | |
16 | ;; unless he says so in writing. Refer to the GNU Emacs General Public | |
17 | ;; License for full details. | |
18 | ||
19 | ;; Everyone is granted permission to copy, modify and redistribute | |
20 | ;; GNU Emacs, but only under the conditions described in the | |
21 | ;; GNU Emacs General Public License. A copy of this license is | |
22 | ;; supposed to have been given to you along with GNU Emacs so you | |
23 | ;; can know your rights and responsibilities. It should be in a | |
24 | ;; file named COPYING. Among other things, the copyright notice | |
25 | ;; and this notice must be preserved on all copies. | |
26 | ||
3b1e4dd1 ER |
27 | ;;; Commentary: |
28 | ||
8e1cae6d JB |
29 | ;;;==================================================================== |
30 | ;; Instructions | |
31 | ||
32 | ;; Searching with isearch-mode.el should work just like isearch.el, | |
33 | ;; except it is done in a temporary minor mode that terminates when | |
34 | ;; you finish searching. | |
35 | ||
36 | ;; To use isearch-mode instead of the standard isearch.el, add the | |
37 | ;; following to your .emacs file. The standard key bindings to | |
38 | ;; isearch-forward, etc, will then use isearch-mode instead of | |
39 | ;; isearch. | |
40 | ||
b457cc3b | 41 | ;; (defalias 'isearch 'isearch-mode) |
8e1cae6d JB |
42 | ;; (autoload 'isearch-mode "isearch-mode") |
43 | ||
08200510 RS |
44 | ;; For programmed use of isearch-mode, e.g. calling (isearch-forward), |
45 | ;; isearch-mode behaves modally and does not return until the search | |
46 | ;; is completed. It uses a recursive-edit to behave this way. Note: | |
47 | ;; gnus does it wrong: (call-interactively 'isearch-forward). | |
48 | ||
49 | ;; If any package you use invokes isearching non-interactively to get | |
50 | ;; the modal behavior described above, you must use the redefinitions | |
51 | ;; of isearch-forward, etc. found in this file instead of those in | |
52 | ;; loaddefs.el. The simplest way to ensure this is to just load | |
53 | ;; isearch-mode explicitly in your .emacs instead of using the above | |
b457cc3b | 54 | ;; defalias and autoload. |
08200510 RS |
55 | |
56 | ;; (load "isearch-mode") | |
57 | ||
8e1cae6d | 58 | ;; The key bindings active within isearch-mode are defined below in |
08200510 RS |
59 | ;; `isearch-mode-map' which is given bindings close to the default |
60 | ;; characters of the original isearch.el. With `isearch-mode', | |
61 | ;; however, you can bind multi-character keys and it should be easier | |
62 | ;; to add new commands. One bug though: keys with meta-prefix cannot | |
63 | ;; be longer than two chars. Also see minibuffer-local-isearch-map | |
64 | ;; for bindings active during `isearch-edit-string'. | |
65 | ||
66 | ;; Note to emacs version 19 users: isearch-mode should work even if | |
67 | ;; you switch windows with the mouse, in which case isearch-mode is | |
68 | ;; terminated automatically before the switch. This is true of lemacs | |
69 | ;; too, with a few more cleanups I've neglected in this release. | |
70 | ;; No one has supplied patches for epoch yet. | |
71 | ||
72 | ;; The search ring and completion commands automatically put you in | |
73 | ;; the minibuffer to edit the string. This gives you a chance to | |
74 | ;; modify the search string before executing the search. There are | |
75 | ;; three commands to terminate the editing: C-s and C-r exit the | |
76 | ;; minibuffer and search forward and reverse respectively, while C-m | |
77 | ;; exits and does a nonincremental search. | |
78 | ||
79 | ;; Exiting immediately from isearch uses isearch-edit-string instead | |
80 | ;; of nonincremental-search, if search-nonincremental-instead is non-nil. | |
81 | ;; The name of this option should probably be changed if we decide to | |
82 | ;; keep the behavior. No point in forcing nonincremental search until | |
83 | ;; the last possible moment. | |
84 | ||
85 | ;; TODO | |
86 | ;; - Integrate the emacs 19 generalized commmand history. | |
87 | ;; - Think about incorporating query-replace. | |
88 | ;; - Hooks and options for failed search. | |
282d89c0 | 89 | |
3b1e4dd1 ER |
90 | ;;; Change Log: |
91 | ||
282d89c0 | 92 | ;;;==================================================================== |
08200510 RS |
93 | ;;; Change History |
94 | ||
8d7e4e80 | 95 | ;;; $Header: /home/fsf/rms/e19/lisp/RCS/isearch.el,v 1.31 1993/04/23 07:31:14 eric Exp rms $ |
3b1e4dd1 | 96 | ;;; $Log: isearch.el,v $ |
8d7e4e80 RS |
97 | ; Revision 1.31 1993/04/23 07:31:14 eric |
98 | ; Replaced all fsets with defaliases. | |
99 | ; | |
b457cc3b ER |
100 | ; Revision 1.30 1993/04/14 19:40:53 rms |
101 | ; Doc fixes. | |
102 | ; | |
b68c164d RS |
103 | ; Revision 1.29 1993/03/30 19:42:10 rms |
104 | ; (isearch-done): Customize the message about mark. | |
105 | ; | |
7872ee4d RS |
106 | ; Revision 1.28 1993/03/30 19:38:34 rms |
107 | ; (isearch-mode-map): Delete the binding for C-h. | |
108 | ; | |
58f1634a RS |
109 | ; Revision 1.27 1993/03/21 05:50:17 jimb |
110 | ; * isearch.el (isearch-switch-frame-handler): Call | |
111 | ; handle-switch-frame instead of select-frame; it has been renamed. | |
112 | ; | |
dba1ec55 JB |
113 | ; Revision 1.26 1993/03/17 17:17:05 eric |
114 | ; Add standard library headers. | |
115 | ; | |
76550a57 ER |
116 | ; Revision 1.25 1993/03/17 16:44:50 eric |
117 | ; Add standard library headers. | |
118 | ; | |
aae56ea7 ER |
119 | ; Revision 1.24 1993/03/17 15:58:09 eric |
120 | ; Add standard library headers. | |
121 | ; | |
3b1e4dd1 ER |
122 | ; Revision 1.23 1993/03/07 20:17:27 rms |
123 | ; (isearch-other-meta-char): Call listify-key-sequence. | |
124 | ; (isearch-unread): Don't call it here. | |
125 | ; (isearch-mode-map): Bind the ASCII-equivalent function keys. | |
126 | ; | |
e7cb0106 RS |
127 | ; Revision 1.22 1993/03/07 08:43:57 rms |
128 | ; (isearch-mode): Don't make a pre-command-hook. | |
129 | ; | |
2ed45c8b RS |
130 | ; Revision 1.21 1993/03/07 04:22:00 rms |
131 | ; (isearch-unread): Find last list element by hand. | |
132 | ; | |
75e86b2e RS |
133 | ; Revision 1.20 1993/03/06 06:15:05 rms |
134 | ; (isearch-unread): Handle multiple args. | |
135 | ; For Emacs 19, use listify-key-sequence. | |
136 | ; If not Emacs 19, assume they are a meta sequence. | |
137 | ; (isearch-other-meta-char): Pass the whole key sequence. | |
138 | ; (isearch-other-control-char): Make this alias for ...-meta-char. | |
139 | ; | |
8f90f594 RS |
140 | ; Revision 1.19 1993/02/17 21:30:25 rms |
141 | ; Fix minor bugs in previous change. | |
142 | ; | |
4ae7d00a RS |
143 | ; Revision 1.18 1993/02/17 20:34:20 rms |
144 | ; (isearch-backward-regexp): | |
145 | ; New arg no-recursive-edit, always non-nil for interactive call. | |
146 | ; Rename first arg, and set it right in interactive call. | |
147 | ; (isearch-forward-regexp): Likewise. | |
148 | ; (isearch-forward, isearch-backward): Likewise no-recursive-edit. | |
149 | ; | |
eceee2c0 RS |
150 | ; Revision 1.17 1993/01/26 01:48:27 jimb |
151 | ; JimB's changes since January 18th | |
152 | ; | |
dbc4e1c1 JB |
153 | ; Revision 1.16 1992/11/16 01:37:06 jimb |
154 | ; * bytecomp.el: Declare unread-command-char an obsolete variable. | |
155 | ; * vip.el (vip-escape-to-emacs, vip-prefix-arg-value, | |
156 | ; vip-prefix-arg-com): Use unread-command-event instead of | |
157 | ; unread-command-char; respect its new semantics. | |
158 | ; * isearch-mode.el (isearch-update, isearch-unread): Same. | |
159 | ; | |
797a37c7 JB |
160 | ; Revision 1.15 1992/11/07 06:17:04 jimb |
161 | ; * isearch.el (isearch-frames-exist): This isn't what we want - | |
162 | ; replaced by... | |
163 | ; (isearch-gnu-emacs-events): non-nil if should expect events in the | |
164 | ; style generated by GNU Emacs 19. Set if set-frame-height is | |
165 | ; fboundp; this is true on any GNU Emacs 19, whether or not it was | |
166 | ; compiled with multiple frame support. | |
167 | ; (isearch-mode-map): Test isearch-gnu-emacs-events instead of | |
168 | ; isearch-frames-exist to see if we should bind switch-frame events. | |
169 | ; (isearch-update): Test isearch-gnu-emacs-events instead of | |
170 | ; isearch-frames-exist to see if unread-command-char's quiescent | |
171 | ; value is nil or -1. | |
172 | ; | |
1a3a6707 JB |
173 | ; Revision 1.14 1992/11/01 22:10:59 rms |
174 | ; (isearch-search): Handle all sorts of errors from regexp search. | |
175 | ; | |
f1c03125 RS |
176 | ; Revision 1.13 1992/10/27 04:11:46 rms |
177 | ; (isearch-edit-string): | |
178 | ; Bind cursor-in-echo-area only around read-char/allocate-event. | |
179 | ; | |
d94307ee RS |
180 | ; Revision 1.12 1992/10/20 21:21:47 rms |
181 | ; (isearch-mode-map): Make the top-level keymap dense. | |
182 | ; Explicitly bind control characters at that level. | |
183 | ; | |
ac689515 RS |
184 | ; Revision 1.11 1992/10/11 05:25:11 rms |
185 | ; (isearch-ring-advance-edit): Delete spurious `)'. | |
186 | ; | |
49c13105 RS |
187 | ; Revision 1.10 1992/09/21 08:28:43 rms |
188 | ; entered into RCS | |
189 | ; | |
08200510 RS |
190 | ;;; Revision 1.4 92/09/14 16:26:02 liberte |
191 | ;;; Added prefix args to isearch-forward, etc. to switch between | |
192 | ;;; string and regular expression searching. | |
193 | ;;; Added some support for lemacs. | |
194 | ;;; Added general isearch-highlight option - but only for lemacs so far. | |
195 | ;;; Added support for frame switching in emacs 19. | |
196 | ;;; Added word search option to isearch-edit-string. | |
197 | ;;; Renamed isearch-quit to isearch-abort. | |
198 | ;;; Numerous changes to comments and doc strings. | |
282d89c0 | 199 | ;;; |
08200510 RS |
200 | ;;; Revision 1.3 92/06/29 13:10:08 liberte |
201 | ;;; Moved modal isearch-mode handling into isearch-mode. | |
202 | ;;; Got rid of buffer-local isearch variables. | |
203 | ;;; isearch-edit-string used by ring adjustments, completion, and | |
204 | ;;; nonincremental searching. C-s and C-r are additional exit commands. | |
205 | ;;; Renamed all regex to regexp. | |
206 | ;;; Got rid of found-start and found-point globals. | |
207 | ;;; Generalized handling of upper-case chars. | |
208 | ||
209 | ;;; Revision 1.2 92/05/27 11:33:57 liberte | |
210 | ;;; Emacs version 19 has a search ring, which is supported here. | |
211 | ;;; Other fixes found in the version 19 isearch are included here. | |
212 | ;;; | |
213 | ;;; Also see variables search-caps-disable-folding, | |
214 | ;;; search-nonincremental-instead, search-whitespace-regexp, and | |
215 | ;;; commands isearch-toggle-regexp, isearch-edit-string. | |
216 | ;;; | |
217 | ;;; semi-modal isearching is supported. | |
282d89c0 ER |
218 | |
219 | ;;; Changes for 1.1 | |
220 | ;;; 3/18/92 Fixed invalid-regexp. | |
221 | ;;; 3/18/92 Fixed yanking in regexps. | |
222 | ||
3b1e4dd1 | 223 | ;;; Code: |
08200510 RS |
224 | |
225 | \f | |
226 | ;;;========================================================================= | |
227 | ;;; Emacs features | |
228 | ||
229 | ;; isearch-mode takes advantage of the features provided by several | |
230 | ;; different versions of emacs. Rather than testing the version of | |
231 | ;; emacs, several constants are defined, one for each of the features. | |
232 | ;; Each of the tests below must work on any version of emacs. | |
233 | ;; (Perhaps provide and featurep could be used for this purpose.) | |
234 | ||
1a3a6707 | 235 | (defconst isearch-gnu-emacs-events (fboundp 'set-frame-height)) ;; emacs 19 |
08200510 | 236 | (defconst isearch-pre-command-hook-exists (boundp 'pre-command-hook)) ;; lemacs |
a5dcf63f | 237 | (defconst isearch-event-data-type nil) ;; lemacs |
08200510 | 238 | |
fdf5afa4 | 239 | (defconst search-exit-option t |
a8f783b2 | 240 | "*Non-nil means random control characters terminate incremental search.") |
fdf5afa4 RS |
241 | |
242 | (defvar search-slow-window-lines 1 | |
243 | "*Number of lines in slow search display windows. | |
244 | These are the short windows used during incremental search on slow terminals. | |
245 | Negative means put the slow search window at the top (normally it's at bottom) | |
246 | and the value is minus the number of lines.") | |
247 | ||
248 | (defvar search-slow-speed 1200 | |
249 | "*Highest terminal speed at which to use \"slow\" style incremental search. | |
250 | This is the style where a one-line window is created to show the line | |
251 | that the search has reached.") | |
8e1cae6d JB |
252 | |
253 | ;;;======================================================================== | |
254 | ;;; Some additional options and constants. | |
255 | ||
fdf5afa4 | 256 | (defvar search-upper-case t |
8e1cae6d | 257 | "*If non-nil, upper case chars disable case fold searching. |
08200510 RS |
258 | That is, upper and lower case chars must match exactly. |
259 | This applies no matter where the chars come from, but does not | |
fdf5afa4 RS |
260 | apply to chars in regexps that are prefixed with `\\'. |
261 | If this value is `not-yanks', yanked text is always downcased.") | |
8e1cae6d JB |
262 | |
263 | (defvar search-nonincremental-instead t | |
264 | "*If non-nil, do a nonincremental search instead if exiting immediately. | |
08200510 RS |
265 | Actually, `isearch-edit-string' is called to let you enter the search |
266 | string, and RET terminates editing and does a nonincremental search.") | |
8e1cae6d JB |
267 | |
268 | (defconst search-whitespace-regexp "\\s-+" | |
269 | "*If non-nil, regular expression to match a sequence of whitespace chars. | |
270 | You might want to use something like \"[ \\t\\r\\n]+\" instead.") | |
271 | ||
a8f783b2 RS |
272 | ;; I removed the * from the doc string because highlighting is not |
273 | ;; currently a clean thing to do. Once highlighting is made clean, | |
274 | ;; this feature can be re-enabled and advertised. | |
08200510 | 275 | (defvar search-highlight nil |
a8f783b2 | 276 | "Whether isearch and query-replace should highlight the text which |
08200510 RS |
277 | currently matches the search-string.") |
278 | ||
279 | ||
280 | (defvar isearch-mode-hook nil | |
281 | "Function(s) to call after starting up an incremental search.") | |
282 | ||
283 | (defvar isearch-mode-end-hook nil | |
284 | "Function(s) to call after terminating an incremental search.") | |
285 | ||
8e1cae6d JB |
286 | ;;;================================================================== |
287 | ;;; Search ring. | |
8e1cae6d JB |
288 | |
289 | (defvar search-ring nil | |
290 | "List of search string sequences.") | |
08200510 | 291 | (defvar regexp-search-ring nil |
8e1cae6d JB |
292 | "List of regular expression search string sequences.") |
293 | ||
294 | (defconst search-ring-max 16 | |
295 | "*Maximum length of search ring before oldest elements are thrown away.") | |
08200510 RS |
296 | (defconst regexp-search-ring-max 16 |
297 | "*Maximum length of regexp search ring before oldest elements are thrown away.") | |
8e1cae6d JB |
298 | |
299 | (defvar search-ring-yank-pointer nil | |
a5dcf63f RS |
300 | "Index in `search-ring' of last string reused. |
301 | nil if none yet.") | |
08200510 | 302 | (defvar regexp-search-ring-yank-pointer nil |
a5dcf63f RS |
303 | "Index in `regexp-search-ring' of last string reused. |
304 | nil if none yet.") | |
8e1cae6d | 305 | |
08200510 RS |
306 | (defvar search-ring-update nil |
307 | "*Non-nil if advancing or retreating in the search ring should cause search. | |
308 | Default value, nil, means edit the string instead.") | |
309 | ||
8e1cae6d JB |
310 | ;;;==================================================== |
311 | ;;; Define isearch-mode keymap. | |
312 | ||
313 | (defvar isearch-mode-map nil | |
314 | "Keymap for isearch-mode.") | |
315 | ||
08200510 RS |
316 | (or isearch-mode-map |
317 | (let* ((i 0) | |
fdf5afa4 | 318 | (map (make-keymap))) |
08200510 | 319 | |
ac689515 RS |
320 | ;; Make function keys, etc, exit the search. |
321 | (define-key map [t] 'isearch-other-control-char) | |
08200510 | 322 | ;; Control chars, by default, end isearch mode transparently. |
ac689515 RS |
323 | ;; We need these explicit definitions because, in a dense keymap, |
324 | ;; the binding for t does not affect characters. | |
325 | ;; We use a dense keymap to save space. | |
08200510 RS |
326 | (while (< i ?\ ) |
327 | (define-key map (make-string 1 i) 'isearch-other-control-char) | |
328 | (setq i (1+ i))) | |
329 | ||
330 | ;; Printing chars extend the selection by default. | |
ac689515 | 331 | (setq i ?\ ) |
8d7e4e80 RS |
332 | (or (vectorp (nth 1 map)) |
333 | (error "The initialization of isearch-mode-map must be updated")) | |
334 | (while (< i (length (nth 1 map))) | |
08200510 RS |
335 | (define-key map (make-string 1 i) 'isearch-printing-char) |
336 | (setq i (1+ i))) | |
337 | ||
338 | ;; Several non-printing chars change the searching behavior. | |
339 | (define-key map "\C-s" 'isearch-repeat-forward) | |
340 | (define-key map "\C-r" 'isearch-repeat-backward) | |
341 | (define-key map "\177" 'isearch-delete-char) | |
342 | (define-key map "\C-g" 'isearch-abort) | |
8e1cae6d | 343 | |
08200510 RS |
344 | (define-key map "\C-q" 'isearch-quote-char) |
345 | ||
08200510 RS |
346 | (define-key map "\r" 'isearch-exit) |
347 | (define-key map "\C-j" 'isearch-printing-char) | |
348 | (define-key map "\t" 'isearch-printing-char) | |
349 | (define-key map " " 'isearch-whitespace-chars) | |
8e1cae6d | 350 | |
08200510 RS |
351 | (define-key map "\C-w" 'isearch-yank-word) |
352 | (define-key map "\C-y" 'isearch-yank-line) | |
353 | ||
e7cb0106 RS |
354 | ;; Bind the ASCII-equivalent "function keys" explicitly |
355 | ;; if we bind their equivalents, | |
356 | ;; since otherwise the default binding would override. | |
357 | ;; We bind [escape] below. | |
358 | (define-key map [tab] 'isearch-printing-char) | |
359 | (define-key map [delete] 'isearch-delete-char) | |
360 | (define-key map [backspace] 'isearch-delete-char) | |
361 | (define-key map [return] 'isearch-exit) | |
362 | (define-key map [newline] 'isearch-printing-char) | |
363 | ||
08200510 RS |
364 | ;; Define keys for regexp chars * ? |. |
365 | ;; Nothing special for + because it matches at least once. | |
366 | (define-key map "*" 'isearch-*-char) | |
367 | (define-key map "?" 'isearch-*-char) | |
368 | (define-key map "|" 'isearch-|-char) | |
369 | ||
58f1634a RS |
370 | ;;; Turned off because I find I expect to get the global definition--rms. |
371 | ;;; ;; Instead bind C-h to special help command for isearch-mode. | |
372 | ;;; (define-key map "\C-h" 'isearch-mode-help) | |
08200510 RS |
373 | |
374 | ;; To handle local bindings with meta char prefix keys, define | |
375 | ;; another full keymap. This must be done for any other prefix | |
376 | ;; keys as well, one full keymap per char of the prefix key. It | |
377 | ;; would be simpler to disable the global keymap, and/or have a | |
378 | ;; default local key binding for any key not otherwise bound. | |
e7cb0106 RS |
379 | (let ((meta-map (make-sparse-keymap))) |
380 | (define-key map (char-to-string meta-prefix-char) meta-map) | |
381 | (define-key map [escape] meta-map)) | |
ac689515 | 382 | (define-key map (vector meta-prefix-char t) 'isearch-other-meta-char) |
08200510 RS |
383 | |
384 | (define-key map "\M-n" 'isearch-ring-advance) | |
385 | (define-key map "\M-p" 'isearch-ring-retreat) | |
1a3a6707 | 386 | |
08200510 RS |
387 | (define-key map "\M-\t" 'isearch-complete) |
388 | ||
389 | ;; For emacs 19, switching frames should terminate isearch-mode | |
1a3a6707 | 390 | (if isearch-gnu-emacs-events |
08200510 RS |
391 | (define-key map [switch-frame] 'isearch-switch-frame-handler)) |
392 | ||
393 | (setq isearch-mode-map map) | |
394 | )) | |
8e1cae6d | 395 | |
08200510 RS |
396 | ;; Some bindings you may want to put in your isearch-mode-hook. |
397 | ;; Suggest some alternates... | |
398 | ;; (define-key isearch-mode-map "\C-t" 'isearch-toggle-regexp) | |
399 | ;; (define-key isearch-mode-map "\C-^" 'isearch-edit-string) | |
8e1cae6d | 400 | |
8e1cae6d | 401 | |
08200510 RS |
402 | (defvar minibuffer-local-isearch-map nil |
403 | "Keymap for editing isearch strings in the minibuffer.") | |
8e1cae6d | 404 | |
08200510 RS |
405 | (or minibuffer-local-isearch-map |
406 | (let ((map (copy-keymap minibuffer-local-map))) | |
407 | (define-key map "\r" 'isearch-nonincremental-exit-minibuffer) | |
35a4d143 RS |
408 | (define-key map "\M-n" 'isearch-ring-advance-edit) |
409 | (define-key map "\M-p" 'isearch-ring-retreat-edit) | |
08200510 RS |
410 | (define-key map "\M-\t" 'isearch-complete-edit) |
411 | (define-key map "\C-s" 'isearch-forward-exit-minibuffer) | |
412 | (define-key map "\C-r" 'isearch-reverse-exit-minibuffer) | |
413 | (setq minibuffer-local-isearch-map map) | |
414 | )) | |
8e1cae6d JB |
415 | |
416 | ;;;======================================================== | |
417 | ;; Internal variables declared globally for byte-compiler. | |
08200510 RS |
418 | ;; These are all set with setq while isearching |
419 | ;; and bound locally while editing the search string. | |
420 | ||
421 | (defvar isearch-forward nil) ; Searching in the forward direction. | |
422 | (defvar isearch-regexp nil) ; Searching for a regexp. | |
423 | (defvar isearch-word nil) ; Searching for words. | |
424 | ||
425 | (defvar isearch-cmds nil) ; Stack of search status sets. | |
426 | (defvar isearch-string "") ; The current search string. | |
427 | (defvar isearch-message "") ; text-char-description version of isearch-string | |
428 | ||
429 | (defvar isearch-success t) ; Searching is currently successful. | |
430 | (defvar isearch-invalid-regexp nil) ; Regexp not well formed. | |
431 | (defvar isearch-other-end nil) ; Start (end) of match if forward (backward). | |
432 | (defvar isearch-wrapped nil) ; Searching restarted from the top (bottom). | |
8e1cae6d JB |
433 | (defvar isearch-barrier 0) |
434 | ||
08200510 | 435 | (defvar isearch-case-fold-search nil) ; case-fold-search while searching. |
8e1cae6d JB |
436 | |
437 | (defvar isearch-adjusted nil) | |
438 | (defvar isearch-slow-terminal-mode nil) | |
08200510 RS |
439 | ;;; If t, using a small window. |
440 | (defvar isearch-small-window nil) | |
8e1cae6d | 441 | (defvar isearch-opoint 0) |
08200510 RS |
442 | ;;; The window configuration active at the beginning of the search. |
443 | (defvar isearch-window-configuration nil) | |
444 | (defvar isearch-old-local-map nil) | |
8e1cae6d | 445 | |
08200510 RS |
446 | ;; Flag to indicate a yank occurred, so don't move the cursor. |
447 | (defvar isearch-yank-flag nil) | |
8e1cae6d | 448 | |
08200510 RS |
449 | ;;; A function to be called after each input character is processed. |
450 | ;;; (It is not called after characters that exit the search.) | |
451 | ;;; It is only set from an optional argument to `isearch-mode'. | |
452 | (defvar isearch-op-fun nil) | |
8e1cae6d | 453 | |
08200510 RS |
454 | ;;; Is isearch-mode in a recursive edit for modal searching. |
455 | (defvar isearch-recursive-edit nil) | |
8e1cae6d | 456 | |
08200510 RS |
457 | ;;; Should isearch be terminated after doing one search? |
458 | (defvar isearch-nonincremental nil) | |
459 | ||
460 | ;; New value of isearch-forward after isearch-edit-string. | |
461 | (defvar isearch-new-forward nil) | |
8e1cae6d | 462 | |
8e1cae6d JB |
463 | |
464 | ;;;============================================================== | |
465 | ;; Minor-mode-alist changes - kind of redundant with the | |
466 | ;; echo area, but if isearching in multiple windows, it can be useful. | |
467 | ||
468 | (or (assq 'isearch-mode minor-mode-alist) | |
469 | (nconc minor-mode-alist | |
470 | (list '(isearch-mode isearch-mode)))) | |
471 | ||
08200510 | 472 | (defvar isearch-mode nil) ;; Name of the minor mode, if non-nil. |
8e1cae6d JB |
473 | (make-variable-buffer-local 'isearch-mode) |
474 | ||
fdf5afa4 RS |
475 | (define-key global-map "\C-s" 'isearch-forward) |
476 | (define-key esc-map "\C-s" 'isearch-forward-regexp) | |
477 | (define-key global-map "\C-r" 'isearch-backward) | |
478 | (define-key esc-map "\C-r" 'isearch-backward-regexp) | |
479 | ||
8e1cae6d JB |
480 | ;;;=============================================================== |
481 | ;;; Entry points to isearch-mode. | |
08200510 | 482 | ;;; These four functions should replace those in loaddefs.el |
b457cc3b | 483 | ;;; An alternative is to defalias isearch-forward etc to isearch-mode, |
08200510 | 484 | ;;; and look at this-command to set the options accordingly. |
8e1cae6d | 485 | |
eceee2c0 | 486 | (defun isearch-forward (&optional regexp-p no-recursive-edit) |
8e1cae6d JB |
487 | "\ |
488 | Do incremental search forward. | |
08200510 RS |
489 | With a prefix argument, do an incremental regular expression search instead. |
490 | \\<isearch-mode-map> | |
8e1cae6d | 491 | As you type characters, they add to the search string and are found. |
08200510 | 492 | The following non-printing keys are bound in `isearch-mode-map'. |
8e1cae6d | 493 | |
08200510 | 494 | Type \\[isearch-delete-char] to cancel characters from end of search string. |
8e1cae6d | 495 | Type \\[isearch-exit] to exit, leaving point at location found. |
08200510 RS |
496 | Type LFD (C-j) to match end of line. |
497 | Type \\[isearch-repeat-forward] to search again forward,\ | |
498 | \\[isearch-repeat-backward] to search again backward. | |
499 | Type \\[isearch-yank-word] to yank word from buffer onto end of search\ | |
500 | string and search for it. | |
501 | Type \\[isearch-yank-line] to yank rest of line onto end of search string\ | |
502 | and search for it. | |
8e1cae6d | 503 | Type \\[isearch-quote-char] to quote control character to search for it. |
08200510 RS |
504 | Type \\[isearch-whitespace-chars] to match all whitespace chars in regexp. |
505 | \\[isearch-abort] while searching or when search has failed cancels input\ | |
506 | back to what has | |
507 | been found successfully. | |
508 | \\[isearch-abort] when search is successful aborts and moves point to\ | |
509 | starting point. | |
8e1cae6d JB |
510 | |
511 | Also supported is a search ring of the previous 16 search strings. | |
512 | Type \\[isearch-ring-advance] to search for the next item in the search ring. | |
08200510 RS |
513 | Type \\[isearch-ring-retreat] to search for the previous item in the search\ |
514 | ring. | |
515 | Type \\[isearch-complete] to complete the search string using the search ring. | |
8e1cae6d | 516 | |
08200510 RS |
517 | The above keys, bound in `isearch-mode-map', are often controlled by |
518 | options; do M-x apropos on search-.* to find them. | |
8e1cae6d | 519 | Other control and meta characters terminate the search |
08200510 | 520 | and are then executed normally (depending on `search-exit-option'). |
8e1cae6d | 521 | |
08200510 RS |
522 | If this function is called non-interactively, it does not return to |
523 | the calling function until the search is done." | |
8e1cae6d | 524 | |
eceee2c0 | 525 | (interactive "P\np") |
4ae7d00a | 526 | (isearch-mode t (not (null regexp-p)) nil (not no-recursive-edit))) |
8e1cae6d | 527 | |
eceee2c0 | 528 | (defun isearch-forward-regexp (&optional not-regexp no-recursive-edit) |
8e1cae6d JB |
529 | "\ |
530 | Do incremental search forward for regular expression. | |
08200510 | 531 | With a prefix argument, do a regular string search instead. |
8e1cae6d JB |
532 | Like ordinary incremental search except that your input |
533 | is treated as a regexp. See \\[isearch-forward] for more info." | |
eceee2c0 | 534 | (interactive "P\np") |
4ae7d00a | 535 | (isearch-mode t (null not-regexp) nil (not no-recursive-edit))) |
8e1cae6d | 536 | |
eceee2c0 | 537 | (defun isearch-backward (&optional regexp-p no-recursive-edit) |
8e1cae6d JB |
538 | "\ |
539 | Do incremental search backward. | |
08200510 | 540 | With a prefix argument, do a regular expression search instead. |
8e1cae6d | 541 | See \\[isearch-forward] for more information." |
eceee2c0 | 542 | (interactive "P\np") |
4ae7d00a | 543 | (isearch-mode nil (not (null regexp-p)) nil (not no-recursive-edit))) |
8e1cae6d | 544 | |
eceee2c0 | 545 | (defun isearch-backward-regexp (&optional not-regexp no-recursive-edit) |
8e1cae6d JB |
546 | "\ |
547 | Do incremental search backward for regular expression. | |
08200510 | 548 | With a prefix argument, do a regular string search instead. |
8e1cae6d JB |
549 | Like ordinary incremental search except that your input |
550 | is treated as a regexp. See \\[isearch-forward] for more info." | |
eceee2c0 | 551 | (interactive "P\np") |
4ae7d00a | 552 | (isearch-mode nil (null not-regexp) nil (not no-recursive-edit))) |
08200510 RS |
553 | |
554 | ||
555 | (defun isearch-mode-help () | |
556 | (interactive) | |
557 | (describe-function 'isearch-forward) | |
558 | (isearch-update)) | |
8e1cae6d JB |
559 | |
560 | \f | |
561 | ;;;================================================================== | |
562 | ;; isearch-mode only sets up incremental search for the minor mode. | |
563 | ;; All the work is done by the isearch-mode commands. | |
564 | ||
08200510 RS |
565 | ;; Not used yet: |
566 | ;;(defconst isearch-commands '(isearch-forward isearch-backward | |
567 | ;; isearch-forward-regexp isearch-backward-regexp) | |
568 | ;; "List of commands for which isearch-mode does not recursive-edit.") | |
569 | ||
570 | ||
571 | (defun isearch-mode (forward &optional regexp op-fun recursive-edit word-p) | |
8e1cae6d | 572 | "Start isearch minor mode. Called by isearch-forward, etc." |
8e1cae6d JB |
573 | |
574 | ;; Initialize global vars. | |
575 | (setq isearch-forward forward | |
576 | isearch-regexp regexp | |
08200510 | 577 | isearch-word word-p |
8e1cae6d JB |
578 | isearch-op-fun op-fun |
579 | isearch-case-fold-search case-fold-search | |
580 | isearch-string "" | |
581 | isearch-message "" | |
582 | isearch-cmds nil | |
583 | isearch-success t | |
584 | isearch-wrapped nil | |
585 | isearch-barrier (point) | |
586 | isearch-adjusted nil | |
587 | isearch-yank-flag nil | |
588 | isearch-invalid-regexp nil | |
dd492f04 JA |
589 | ;; Use (baud-rate) for now, for sake of other versions. |
590 | isearch-slow-terminal-mode (and (<= (baud-rate) search-slow-speed) | |
8e1cae6d JB |
591 | (> (window-height) |
592 | (* 4 search-slow-window-lines))) | |
593 | isearch-other-end nil | |
594 | isearch-small-window nil | |
8e1cae6d | 595 | |
8e1cae6d JB |
596 | isearch-opoint (point) |
597 | isearch-window-configuration (current-window-configuration) | |
a5dcf63f RS |
598 | isearch-old-local-map (current-local-map) |
599 | search-ring-yank-pointer nil | |
600 | regexp-search-ring-yank-pointer nil) | |
2ed45c8b RS |
601 | ;; This was for Lucid Emacs. But now that we have pre-command-hook, |
602 | ;; it causes trouble. | |
603 | ;; (if isearch-pre-command-hook-exists | |
604 | ;; (add-hook 'pre-command-hook 'isearch-pre-command-hook)) | |
8e1cae6d JB |
605 | (setq isearch-mode " Isearch") ;; forward? regexp? |
606 | (set-buffer-modified-p (buffer-modified-p)) ; update modeline | |
607 | ||
608 | (isearch-push-state) | |
609 | ||
610 | (use-local-map isearch-mode-map) | |
611 | (isearch-update) | |
612 | (run-hooks 'isearch-mode-hook) | |
08200510 RS |
613 | |
614 | ;; isearch-mode can be made modal (in the sense of not returning to | |
615 | ;; the calling function until searching is completed) by entering | |
616 | ;; a recursive-edit and exiting it when done isearching. | |
617 | (if recursive-edit (recursive-edit)) | |
8e1cae6d JB |
618 | ) |
619 | ||
620 | ||
621 | ;;;==================================================== | |
622 | ;; Some high level utilities. Others below. | |
623 | ||
624 | (defun isearch-update () | |
625 | ;; Called after each command to update the display. | |
a5dcf63f | 626 | (if (if isearch-event-data-type |
08200510 | 627 | (null unread-command-event) |
1a3a6707 | 628 | (if isearch-gnu-emacs-events |
dbc4e1c1 | 629 | (null unread-command-events) |
08200510 | 630 | (< unread-command-char 0))) |
8e1cae6d JB |
631 | (progn |
632 | (if (not (input-pending-p)) | |
633 | (isearch-message)) | |
634 | (if (and isearch-slow-terminal-mode | |
635 | (not (or isearch-small-window | |
636 | (pos-visible-in-window-p)))) | |
08200510 | 637 | (let ((found-point (point))) |
8e1cae6d | 638 | (setq isearch-small-window t) |
8e1cae6d JB |
639 | (move-to-window-line 0) |
640 | (let ((window-min-height 1)) | |
641 | (split-window nil (if (< search-slow-window-lines 0) | |
642 | (1+ (- search-slow-window-lines)) | |
643 | (- (window-height) | |
644 | (1+ search-slow-window-lines))))) | |
645 | (if (< search-slow-window-lines 0) | |
646 | (progn (vertical-motion (- 1 search-slow-window-lines)) | |
647 | (set-window-start (next-window) (point)) | |
648 | (set-window-hscroll (next-window) | |
649 | (window-hscroll)) | |
650 | (set-window-hscroll (selected-window) 0)) | |
651 | (other-window 1)) | |
08200510 RS |
652 | (goto-char found-point))) |
653 | (if isearch-other-end | |
654 | (if (< isearch-other-end (point)) ; isearch-forward? | |
655 | (isearch-highlight isearch-other-end (point)) | |
656 | (isearch-highlight (point) isearch-other-end))) | |
657 | )) | |
8e1cae6d JB |
658 | (setq ;; quit-flag nil not for isearch-mode |
659 | isearch-adjusted nil | |
660 | isearch-yank-flag nil) | |
661 | ) | |
662 | ||
663 | ||
35a4d143 | 664 | (defun isearch-done (&optional nopush) |
8e1cae6d | 665 | ;; Called by all commands that terminate isearch-mode. |
35a4d143 | 666 | ;; If NOPUSH is non-nil, we don't push the string on the search ring. |
8e1cae6d | 667 | (use-local-map isearch-old-local-map) |
08200510 RS |
668 | ;; (setq pre-command-hook isearch-old-pre-command-hook) ; for lemacs |
669 | (isearch-dehighlight t) | |
670 | (let ((found-start (window-start (selected-window))) | |
671 | (found-point (point))) | |
672 | (set-window-configuration isearch-window-configuration) | |
673 | ||
674 | ;; If there was movement, mark the starting position. | |
675 | ;; Maybe should test difference between and set mark iff > threshold. | |
676 | (if (/= (point) isearch-opoint) | |
7872ee4d RS |
677 | (progn |
678 | (push-mark isearch-opoint t) | |
679 | (or executing-macro (> (minibuffer-depth) 0) | |
680 | (message "Mark saved where search started"))) | |
08200510 RS |
681 | ;; (message "") why is this needed? |
682 | ) | |
683 | (if isearch-small-window | |
684 | (goto-char found-point) | |
685 | ;; Exiting the save-window-excursion clobbers window-start; restore it. | |
686 | (set-window-start (selected-window) found-start t))) | |
687 | ||
688 | (setq isearch-mode nil) | |
689 | (set-buffer-modified-p (buffer-modified-p)) ;; update modeline | |
8e1cae6d | 690 | |
35a4d143 | 691 | (if (and (> (length isearch-string) 0) (not nopush)) |
8e1cae6d JB |
692 | ;; Update the ring data. |
693 | (if isearch-regexp | |
a8f783b2 RS |
694 | (if (or (null regexp-search-ring) |
695 | (not (string= isearch-string (car regexp-search-ring)))) | |
8e1cae6d | 696 | (progn |
08200510 | 697 | (setq regexp-search-ring |
a5dcf63f | 698 | (cons isearch-string regexp-search-ring)) |
08200510 RS |
699 | (if (> (length regexp-search-ring) regexp-search-ring-max) |
700 | (setcdr (nthcdr (1- search-ring-max) regexp-search-ring) | |
8e1cae6d | 701 | nil)))) |
a8f783b2 RS |
702 | (if (or (null search-ring) |
703 | (not (string= isearch-string (car search-ring)))) | |
8e1cae6d | 704 | (progn |
a5dcf63f | 705 | (setq search-ring (cons isearch-string search-ring)) |
8e1cae6d JB |
706 | (if (> (length search-ring) search-ring-max) |
707 | (setcdr (nthcdr (1- search-ring-max) search-ring) nil)))))) | |
708 | ||
8e1cae6d | 709 | (run-hooks 'isearch-mode-end-hook) |
08200510 RS |
710 | (if isearch-recursive-edit (exit-recursive-edit))) |
711 | ||
712 | ;;;======================================================= | |
713 | ;;; Switching buffers should first terminate isearch-mode. | |
714 | ;;; This is done quite differently for each varient of emacs. | |
715 | ;;; For lemacs, see Exiting in lemacs below | |
716 | ||
717 | ;; For Emacs 19, the frame switch event is handled. | |
718 | (defun isearch-switch-frame-handler () | |
719 | (interactive) ;; Is this necessary? | |
720 | ;; First terminate isearch-mode. | |
721 | (isearch-done) | |
dba1ec55 | 722 | (handle-switch-frame (car (cdr (isearch-last-command-char))))) |
08200510 RS |
723 | |
724 | ;;;======================================================== | |
8e1cae6d JB |
725 | |
726 | \f | |
727 | ;;;==================================================== | |
728 | ;; Commands active while inside of the isearch minor mode. | |
729 | ||
730 | (defun isearch-exit () | |
731 | "Exit search normally. | |
732 | However, if this is the first command after starting incremental | |
733 | search and `search-nonincremental-instead' is non-nil, do a | |
08200510 | 734 | nonincremental search instead via `isearch-edit-string'." |
8e1cae6d JB |
735 | (interactive) |
736 | (if (and search-nonincremental-instead | |
737 | (= 0 (length isearch-string))) | |
08200510 RS |
738 | (let ((isearch-nonincremental t)) |
739 | (isearch-edit-string))) | |
8e1cae6d JB |
740 | (isearch-done)) |
741 | ||
742 | ||
743 | (defun isearch-edit-string () | |
08200510 RS |
744 | "Edit the search string in the minibuffer. |
745 | The following additional command keys are active while editing. | |
746 | \\<minibuffer-local-isearch-map> | |
747 | \\[exit-minibuffer] to resume incremental searching with the edited string. | |
748 | \\[isearch-nonincremental-exit-minibuffer] to do one nonincremental search. | |
749 | \\[isearch-forward-exit-minibuffer] to resume isearching forward. | |
750 | \\[isearch-backward-exit-minibuffer] to resume isearching backward. | |
751 | \\[isearch-ring-advance-edit] to replace the search string with the next item in the search ring. | |
752 | \\[isearch-ring-retreat-edit] to replace the search string with the previou item in the search ring. | |
753 | \\[isearch-complete-edit] to complete the search string using the search ring. | |
754 | ||
755 | If first char entered is \\[isearch-yank-word], then do word search instead." | |
756 | ||
757 | ;; This code is very hairy for several reasons, explained in the code. | |
758 | ;; Mainly, isearch-mode must be terminated while editing and then restarted. | |
759 | ;; If there were a way to catch any change of buffer from the minibuffer, | |
760 | ;; this could be simplified greatly. | |
761 | ;; Editing doesnt back up the search point. Should it? | |
8e1cae6d | 762 | (interactive) |
08200510 | 763 | (condition-case err |
a5dcf63f | 764 | (let (isearch-nonincremental ; should search nonincrementally? |
08200510 RS |
765 | |
766 | ;; Locally bind all isearch global variables to protect them | |
767 | ;; from recursive isearching. | |
768 | ;; isearch-string -message and -forward are not bound | |
769 | ;; so they may be changed. Instead, save the values. | |
770 | (isearch-new-string isearch-string) | |
771 | (isearch-new-message isearch-message) | |
772 | (isearch-new-forward isearch-forward) | |
773 | (isearch-new-word isearch-word) | |
774 | ||
775 | (isearch-regexp isearch-regexp) | |
776 | (isearch-op-fun isearch-op-fun) | |
777 | (isearch-cmds isearch-cmds) | |
778 | (isearch-success isearch-success) | |
779 | (isearch-wrapped isearch-wrapped) | |
780 | (isearch-barrier isearch-barrier) | |
781 | (isearch-adjusted isearch-adjusted) | |
782 | (isearch-yank-flag isearch-yank-flag) | |
783 | (isearch-invalid-regexp isearch-invalid-regexp) | |
784 | (isearch-other-end isearch-other-end) | |
785 | (isearch-opoint isearch-opoint) | |
786 | (isearch-slow-terminal-mode isearch-slow-terminal-mode) | |
787 | (isearch-small-window isearch-small-window) | |
788 | (isearch-recursive-edit isearch-recursive-edit) | |
789 | ;; Save current configuration so we can restore it here. | |
790 | (isearch-window-configuration (current-window-configuration)) | |
791 | ) | |
792 | ||
793 | ;; Actually terminate isearching until editing is done. | |
794 | ;; This is so that the user can do anything without failure, | |
795 | ;; like switch buffers and start another isearch, and return. | |
796 | (condition-case err | |
35a4d143 | 797 | (isearch-done t) |
08200510 RS |
798 | (exit nil)) ; was recursive editing |
799 | ||
800 | (isearch-message) ;; for read-char | |
801 | (unwind-protect | |
802 | (let* (;; Why does following read-char echo? | |
803 | ;;(echo-keystrokes 0) ;; not needed with above message | |
d94307ee RS |
804 | (e (let ((cursor-in-echo-area t)) |
805 | (if isearch-event-data-type | |
806 | (allocate-event) (read-char)))) | |
08200510 RS |
807 | ;; Binding minibuffer-history-symbol to nil is a work-around |
808 | ;; for some incompatibility with gmhist. | |
809 | (minibuffer-history-symbol)) | |
810 | ;; If the first character the user types when we prompt them | |
811 | ;; for a string is the yank-word character, then go into | |
812 | ;; word-search mode. Otherwise unread that character and | |
813 | ;; read a key the normal way. | |
814 | ;; Word search does not apply (yet) to regexp searches, | |
815 | ;; no check is made here. | |
816 | (message (isearch-message-prefix nil nil t)) | |
817 | (if (eq 'isearch-yank-word | |
818 | (lookup-key | |
819 | isearch-mode-map | |
820 | (char-to-string | |
a5dcf63f | 821 | (if isearch-event-data-type |
08200510 RS |
822 | (or (event-to-character (next-command-event e)) 0) |
823 | e)))) | |
824 | (setq isearch-word t ;; so message-prefix is right | |
825 | isearch-new-word t) | |
826 | (isearch-unread e)) | |
a5dcf63f RS |
827 | (setq cursor-in-echo-area nil) |
828 | (setq isearch-new-string | |
35a4d143 | 829 | (let (junk-ring) |
a5dcf63f RS |
830 | (read-from-minibuffer (isearch-message-prefix) |
831 | isearch-string | |
832 | minibuffer-local-isearch-map nil | |
35a4d143 | 833 | 'junk-ring)) |
08200510 RS |
834 | isearch-new-message (mapconcat 'text-char-description |
835 | isearch-new-string ""))) | |
836 | ;; Always resume isearching by restarting it. | |
837 | (isearch-mode isearch-forward | |
838 | isearch-regexp | |
839 | isearch-op-fun | |
840 | isearch-recursive-edit | |
841 | isearch-word) | |
842 | ||
843 | ;; Copy new local values to isearch globals | |
844 | (setq isearch-string isearch-new-string | |
845 | isearch-message isearch-new-message | |
846 | isearch-forward isearch-new-forward | |
847 | isearch-word isearch-new-word)) | |
848 | ||
849 | ;; Empty isearch-string means use default. | |
850 | (if (= 0 (length isearch-string)) | |
a8f783b2 RS |
851 | (setq isearch-string (car (if isearch-regexp regexp-search-ring |
852 | search-ring))) | |
853 | ;; This used to set the last search string, | |
854 | ;; but I think it is not right to do that here. | |
855 | ;; Only the string actually used should be saved. | |
856 | ) | |
08200510 RS |
857 | |
858 | ;; Reinvoke the pending search. | |
859 | (isearch-push-state) | |
860 | (isearch-search) | |
861 | (isearch-update) | |
862 | (if isearch-nonincremental | |
863 | (progn | |
864 | ;; (sit-for 1) ;; needed if isearch-done does: (message "") | |
865 | (isearch-done)))) | |
8e1cae6d | 866 | |
08200510 RS |
867 | (quit ; handle abort-recursive-edit |
868 | (isearch-abort) ;; outside of let to restore outside global values | |
869 | ))) | |
870 | ||
871 | (defun isearch-nonincremental-exit-minibuffer () | |
872 | (interactive) | |
873 | (setq isearch-nonincremental t) | |
874 | (exit-minibuffer)) | |
875 | ||
876 | (defun isearch-forward-exit-minibuffer () | |
877 | (interactive) | |
878 | (setq isearch-new-forward t) | |
879 | (exit-minibuffer)) | |
8e1cae6d | 880 | |
08200510 | 881 | (defun isearch-reverse-exit-minibuffer () |
8e1cae6d | 882 | (interactive) |
08200510 RS |
883 | (setq isearch-new-forward nil) |
884 | (exit-minibuffer)) | |
885 | ||
886 | ||
887 | (defun isearch-abort () | |
888 | "Abort incremental search mode if searching is successful, signalling quit. | |
889 | Otherwise, revert to previous successful search and continue searching. | |
890 | Use `isearch-exit' to quit without signalling." | |
891 | (interactive) | |
892 | ;; (ding) signal instead below, if quiting | |
8e1cae6d JB |
893 | (discard-input) |
894 | (if isearch-success | |
895 | ;; If search is successful, move back to starting point | |
896 | ;; and really do quit. | |
897 | (progn (goto-char isearch-opoint) | |
35a4d143 | 898 | (isearch-done t) ; exit isearch |
a5dcf63f | 899 | (signal 'quit nil)) ; and pass on quit signal |
08200510 | 900 | ;; If search is failing, rub out until it is once more successful. |
8e1cae6d JB |
901 | (while (not isearch-success) (isearch-pop-state)) |
902 | (isearch-update))) | |
903 | ||
904 | ||
905 | (defun isearch-repeat (direction) | |
906 | ;; Utility for isearch-repeat-forward and -backward. | |
907 | (if (eq isearch-forward (eq direction 'forward)) | |
908 | ;; C-s in forward or C-r in reverse. | |
909 | (if (equal isearch-string "") | |
910 | ;; If search string is empty, use last one. | |
911 | (setq isearch-string | |
8e1cae6d | 912 | (or (if isearch-regexp |
a5dcf63f RS |
913 | (car regexp-search-ring) |
914 | (car search-ring)) | |
8e1cae6d JB |
915 | "") |
916 | isearch-message | |
08200510 | 917 | (mapconcat 'isearch-text-char-description |
8e1cae6d JB |
918 | isearch-string "")) |
919 | ;; If already have what to search for, repeat it. | |
920 | (or isearch-success | |
921 | (progn | |
922 | ||
923 | (goto-char (if isearch-forward (point-min) (point-max))) | |
924 | (setq isearch-wrapped t)))) | |
925 | ;; C-s in reverse or C-r in forward, change direction. | |
926 | (setq isearch-forward (not isearch-forward))) | |
927 | ||
928 | (setq isearch-barrier (point)) ; For subsequent \| if regexp. | |
929 | (setq isearch-success t) | |
930 | (or (equal isearch-string "") | |
931 | (progn | |
932 | ;; If repeating a search that found | |
933 | ;; an empty string, ensure we advance. | |
934 | (if (equal (match-end 0) (match-beginning 0)) | |
935 | (forward-char (if isearch-forward 1 -1))) | |
936 | (isearch-search))) | |
937 | (isearch-push-state) | |
938 | (isearch-update)) | |
939 | ||
940 | (defun isearch-repeat-forward () | |
941 | "Repeat incremental search forwards." | |
942 | (interactive) | |
943 | (isearch-repeat 'forward)) | |
944 | ||
945 | (defun isearch-repeat-backward () | |
946 | "Repeat incremental search backwards." | |
947 | (interactive) | |
948 | (isearch-repeat 'backward)) | |
949 | ||
950 | (defun isearch-toggle-regexp () | |
951 | "Toggle regexp searching on or off." | |
952 | ;; The status stack is left unchanged. | |
953 | (interactive) | |
954 | (setq isearch-regexp (not isearch-regexp)) | |
08200510 | 955 | (if isearch-regexp (setq isearch-word nil)) |
8e1cae6d JB |
956 | (isearch-update)) |
957 | ||
958 | (defun isearch-delete-char () | |
959 | "Discard last input item and move point back. | |
960 | If no previous match was done, just beep." | |
961 | (interactive) | |
962 | (if (null (cdr isearch-cmds)) | |
963 | (ding) | |
964 | (isearch-pop-state)) | |
965 | (isearch-update)) | |
966 | ||
967 | ||
968 | (defun isearch-yank (chunk) | |
969 | ;; Helper for isearch-yank-word and isearch-yank-line | |
08200510 RS |
970 | (let ((string (save-excursion |
971 | (and (not isearch-forward) isearch-other-end | |
972 | (goto-char isearch-other-end)) | |
973 | (buffer-substring | |
974 | (point) | |
975 | (save-excursion | |
976 | (cond | |
977 | ((eq chunk 'word) | |
978 | (forward-word 1)) | |
979 | ((eq chunk 'line) | |
980 | (end-of-line))) | |
981 | (point)))))) | |
982 | ;; Downcase the string if not supposed to case-fold yanked strings. | |
983 | (if (and isearch-case-fold-search | |
fdf5afa4 | 984 | (eq 'not-yanks search-upper-case)) |
08200510 RS |
985 | (setq string (downcase string))) |
986 | (if isearch-regexp (setq string (regexp-quote string))) | |
987 | (setq isearch-string (concat isearch-string string) | |
8e1cae6d JB |
988 | isearch-message |
989 | (concat isearch-message | |
08200510 RS |
990 | (mapconcat 'isearch-text-char-description |
991 | string "")) | |
8e1cae6d JB |
992 | ;; Don't move cursor in reverse search. |
993 | isearch-yank-flag t)) | |
994 | (isearch-search-and-update)) | |
995 | ||
996 | ||
997 | (defun isearch-yank-word () | |
998 | "Pull next word from buffer into search string." | |
999 | (interactive) | |
1000 | (isearch-yank 'word)) | |
1001 | ||
1002 | (defun isearch-yank-line () | |
1003 | "Pull rest of line from buffer into search string." | |
1004 | (interactive) | |
1005 | (isearch-yank 'line)) | |
1006 | ||
1007 | ||
1008 | (defun isearch-search-and-update () | |
1009 | ;; Do the search and update the display. | |
1010 | (if (and (not isearch-success) | |
1011 | ;; unsuccessful regexp search may become | |
1012 | ;; successful by addition of characters which | |
1013 | ;; make isearch-string valid | |
1014 | (not isearch-regexp)) | |
1015 | nil | |
1016 | ;; In reverse search, adding stuff at | |
1017 | ;; the end may cause zero or many more chars to be | |
1018 | ;; matched, in the string following point. | |
1019 | ;; Allow all those possibilities without moving point as | |
1020 | ;; long as the match does not extend past search origin. | |
1021 | (if (and (not isearch-forward) (not isearch-adjusted) | |
1022 | (condition-case () | |
1023 | (looking-at (if isearch-regexp isearch-string | |
1024 | (regexp-quote isearch-string))) | |
1025 | (error nil)) | |
1026 | (or isearch-yank-flag | |
1027 | (<= (match-end 0) | |
1028 | (min isearch-opoint isearch-barrier)))) | |
1029 | (setq isearch-success t | |
1030 | isearch-invalid-regexp nil | |
1031 | isearch-other-end (match-end 0)) | |
1032 | ;; Not regexp, not reverse, or no match at point. | |
1033 | (if (and isearch-other-end (not isearch-adjusted)) | |
1034 | (goto-char (if isearch-forward isearch-other-end | |
1035 | (min isearch-opoint | |
1036 | isearch-barrier | |
1037 | (1+ isearch-other-end))))) | |
1038 | (isearch-search) | |
1039 | )) | |
1040 | (isearch-push-state) | |
1041 | (if isearch-op-fun (funcall isearch-op-fun)) | |
1042 | (isearch-update)) | |
1043 | ||
1044 | ||
1045 | ;; *, ?, and | chars can make a regexp more liberal. | |
08200510 | 1046 | ;; They can make a regexp match sooner or make it succeed instead of failing. |
8e1cae6d JB |
1047 | ;; So go back to place last successful search started |
1048 | ;; or to the last ^S/^R (barrier), whichever is nearer. | |
08200510 | 1049 | ;; + needs no special handling because the string must match at least once. |
8e1cae6d JB |
1050 | |
1051 | (defun isearch-*-char () | |
1052 | "Handle * and ? specially in regexps." | |
1053 | (interactive) | |
1054 | (if isearch-regexp | |
1055 | ||
1056 | (progn | |
1057 | (setq isearch-adjusted t) | |
1058 | (let ((cs (nth (if isearch-forward | |
1059 | 5 ; isearch-other-end | |
1060 | 2) ; saved (point) | |
1061 | (car (cdr isearch-cmds))))) | |
1062 | ;; (car isearch-cmds) is after last search; | |
1063 | ;; (car (cdr isearch-cmds)) is from before it. | |
1064 | (setq cs (or cs isearch-barrier)) | |
1065 | (goto-char | |
1066 | (if isearch-forward | |
1067 | (max cs isearch-barrier) | |
1068 | (min cs isearch-barrier)))))) | |
08200510 | 1069 | (isearch-process-search-char (isearch-last-command-char))) |
8e1cae6d JB |
1070 | |
1071 | ||
8e1cae6d JB |
1072 | (defun isearch-|-char () |
1073 | "If in regexp search, jump to the barrier." | |
1074 | (interactive) | |
1075 | (if isearch-regexp | |
1076 | (progn | |
1077 | (setq isearch-adjusted t) | |
1078 | (goto-char isearch-barrier))) | |
08200510 | 1079 | (isearch-process-search-char (isearch-last-command-char))) |
8e1cae6d JB |
1080 | |
1081 | ||
b457cc3b | 1082 | (defalias 'isearch-other-control-char 'isearch-other-meta-char) |
8e1cae6d JB |
1083 | |
1084 | (defun isearch-other-meta-char () | |
8f90f594 | 1085 | "Exit the search normally and reread this key sequence. |
35a4d143 RS |
1086 | But only if `search-exit-option' is non-nil, the default. |
1087 | If it is the symbol `edit', the search string is edited in the minibuffer | |
1088 | and the meta character is unread so that it applies to editing the string." | |
8e1cae6d | 1089 | (interactive) |
35a4d143 RS |
1090 | (cond ((eq search-exit-option 'edit) |
1091 | (let ((key (this-command-keys))) | |
e7cb0106 | 1092 | (apply 'isearch-unread (listify-key-sequence key))) |
35a4d143 RS |
1093 | (isearch-edit-string)) |
1094 | (search-exit-option | |
1095 | (let ((key (this-command-keys))) | |
e7cb0106 | 1096 | (apply 'isearch-unread (listify-key-sequence key))) |
35a4d143 RS |
1097 | (isearch-done)) |
1098 | (t;; otherwise nil | |
1099 | (isearch-process-search-string (this-command-keys) | |
1100 | (this-command-keys))))) | |
8e1cae6d JB |
1101 | |
1102 | ||
1103 | (defun isearch-quote-char () | |
1104 | "Quote special characters for incremental search." | |
1105 | (interactive) | |
1106 | (isearch-process-search-char (read-quoted-char (isearch-message t)))) | |
1107 | ||
8e1cae6d JB |
1108 | (defun isearch-return-char () |
1109 | "Convert return into newline for incremental search. | |
1110 | Obsolete." | |
1111 | (interactive) | |
1112 | (isearch-process-search-char ?\n)) | |
1113 | ||
8e1cae6d | 1114 | (defun isearch-printing-char () |
b68c164d | 1115 | "Add this ordinary printing character to the search string and search." |
8e1cae6d | 1116 | (interactive) |
08200510 | 1117 | (isearch-process-search-char (isearch-last-command-char))) |
8e1cae6d JB |
1118 | |
1119 | (defun isearch-whitespace-chars () | |
08200510 | 1120 | "Match all whitespace chars, if in regexp mode. |
b68c164d | 1121 | If you want to search for just a space, type C-q SPC." |
8e1cae6d | 1122 | (interactive) |
08200510 RS |
1123 | (if isearch-regexp |
1124 | (if search-whitespace-regexp | |
1125 | (isearch-process-search-string search-whitespace-regexp " ") | |
1126 | (isearch-printing-char)) | |
1127 | (progn | |
1128 | ;; This way of doing word search doesnt correctly extend current search. | |
1129 | ;; (setq isearch-word t) | |
1130 | ;; (setq isearch-adjusted t) | |
1131 | ;; (goto-char isearch-barrier) | |
1132 | (isearch-printing-char)))) | |
8e1cae6d JB |
1133 | |
1134 | (defun isearch-process-search-char (char) | |
1135 | ;; Append the char to the search string, update the message and re-search. | |
08200510 RS |
1136 | (isearch-process-search-string |
1137 | (isearch-char-to-string char) | |
1138 | (isearch-text-char-description char))) | |
8e1cae6d JB |
1139 | |
1140 | (defun isearch-process-search-string (string message) | |
1141 | (setq isearch-string (concat isearch-string string) | |
1142 | isearch-message (concat isearch-message message)) | |
1143 | (isearch-search-and-update)) | |
1144 | ||
1145 | \f | |
1146 | ;;=========================================================== | |
1147 | ;; Search Ring | |
1148 | ||
08200510 RS |
1149 | (defun isearch-ring-adjust1 (advance) |
1150 | ;; Helper for isearch-ring-adjust | |
1151 | (let* ((ring (if isearch-regexp regexp-search-ring search-ring)) | |
8e1cae6d JB |
1152 | (length (length ring)) |
1153 | (yank-pointer-name (if isearch-regexp | |
08200510 | 1154 | 'regexp-search-ring-yank-pointer |
8e1cae6d JB |
1155 | 'search-ring-yank-pointer)) |
1156 | (yank-pointer (eval yank-pointer-name))) | |
1157 | (if (zerop length) | |
1158 | () | |
1159 | (set yank-pointer-name | |
1160 | (setq yank-pointer | |
a5dcf63f RS |
1161 | (% (+ (or yank-pointer 0) |
1162 | (if advance (1- length) 1)) | |
1163 | length))) | |
1164 | (setq isearch-string (nth yank-pointer ring) | |
08200510 RS |
1165 | isearch-message (mapconcat 'isearch-text-char-description |
1166 | isearch-string ""))))) | |
1167 | ||
1168 | (defun isearch-ring-adjust (advance) | |
1169 | ;; Helper for isearch-ring-advance and isearch-ring-retreat | |
1170 | (if (cdr isearch-cmds) ;; is there more than one thing on stack? | |
1171 | (isearch-pop-state)) | |
1172 | (isearch-ring-adjust1 advance) | |
8e1cae6d | 1173 | (isearch-push-state) |
08200510 RS |
1174 | (if search-ring-update |
1175 | (progn | |
1176 | (isearch-search) | |
1177 | (isearch-update)) | |
1178 | (isearch-edit-string) | |
1179 | )) | |
8e1cae6d JB |
1180 | |
1181 | (defun isearch-ring-advance () | |
1182 | "Advance to the next search string in the ring." | |
08200510 | 1183 | ;; This could be more general to handle a prefix arg, but who would use it. |
8e1cae6d JB |
1184 | (interactive) |
1185 | (isearch-ring-adjust 'advance)) | |
1186 | ||
1187 | (defun isearch-ring-retreat () | |
1188 | "Retreat to the previous search string in the ring." | |
1189 | (interactive) | |
1190 | (isearch-ring-adjust nil)) | |
1191 | ||
a5dcf63f RS |
1192 | (defun isearch-ring-advance-edit (n) |
1193 | "Insert the next element of the search history into the minibuffer." | |
1194 | (interactive "p") | |
1195 | (let* ((yank-pointer-name (if isearch-regexp | |
1196 | 'regexp-search-ring-yank-pointer | |
1197 | 'search-ring-yank-pointer)) | |
1198 | (yank-pointer (eval yank-pointer-name)) | |
1199 | (ring (if isearch-regexp regexp-search-ring search-ring)) | |
1200 | (length (length ring))) | |
1201 | (if (zerop length) | |
1202 | () | |
1203 | (set yank-pointer-name | |
1204 | (setq yank-pointer | |
1205 | (% (+ (or yank-pointer 0) | |
35a4d143 RS |
1206 | ;; Add LENGTH here to ensure a positive result. |
1207 | length | |
1208 | (% (- n) length)) | |
a5dcf63f RS |
1209 | length))) |
1210 | ||
a5dcf63f | 1211 | (erase-buffer) |
35a4d143 | 1212 | (insert (nth yank-pointer ring)) |
49c13105 | 1213 | (goto-char (point-max))))) |
a5dcf63f RS |
1214 | |
1215 | (defun isearch-ring-retreat-edit (n) | |
1216 | "Inserts the previous element of the search history into the minibuffer." | |
1217 | (interactive "p") | |
1218 | (isearch-ring-advance-edit (- n))) | |
1219 | ||
1220 | ;;(defun isearch-ring-adjust-edit (advance) | |
1221 | ;; "Use the next or previous search string in the ring while in minibuffer." | |
1222 | ;; (isearch-ring-adjust1 advance) | |
1223 | ;; (erase-buffer) | |
1224 | ;; (insert isearch-string)) | |
1225 | ||
1226 | ;;(defun isearch-ring-advance-edit () | |
1227 | ;; (interactive) | |
1228 | ;; (isearch-ring-adjust-edit 'advance)) | |
1229 | ||
1230 | ;;(defun isearch-ring-retreat-edit () | |
1231 | ;; "Retreat to the previous search string in the ring while in the minibuffer." | |
1232 | ;; (interactive) | |
1233 | ;; (isearch-ring-adjust-edit nil)) | |
08200510 RS |
1234 | |
1235 | ||
1236 | (defun isearch-complete1 () | |
1237 | ;; Helper for isearch-complete and isearch-complete-edit | |
1238 | ;; Return t if completion OK, nil if no completion exists. | |
1239 | (let* ((ring (if isearch-regexp regexp-search-ring search-ring)) | |
1240 | (alist (mapcar (function (lambda (string) (list string))) ring)) | |
1241 | (completion-ignore-case case-fold-search) | |
1242 | (completion (try-completion isearch-string alist))) | |
1243 | (cond | |
1244 | ((eq completion t) | |
1245 | ;; isearch-string stays the same | |
1246 | t) | |
1247 | ((or completion ; not nil, must be a string | |
1248 | (= 0 (length isearch-string))) ; shouldnt have to say this | |
1249 | (if (equal completion isearch-string) ;; no extension? | |
1250 | (if completion-auto-help | |
1251 | (with-output-to-temp-buffer "*Isearch completions*" | |
1252 | (display-completion-list | |
1253 | (all-completions isearch-string alist)))) | |
1254 | (setq isearch-string completion)) | |
1255 | t) | |
1256 | (t | |
1257 | (message "No completion") ; waits a second if in minibuffer | |
1258 | nil)))) | |
1259 | ||
1260 | (defun isearch-complete () | |
1261 | "Complete the search string from the strings on the search ring. | |
1262 | The completed string is then editable in the minibuffer. | |
1263 | If there is no completion possible, say so and continue searching." | |
1264 | (interactive) | |
1265 | (if (isearch-complete1) | |
1266 | (isearch-edit-string) | |
1267 | ;; else | |
1268 | (sit-for 1) | |
1269 | (isearch-update))) | |
8e1cae6d | 1270 | |
08200510 RS |
1271 | (defun isearch-complete-edit () |
1272 | "Same as `isearch-complete' except in the minibuffer." | |
1273 | (interactive) | |
1274 | (setq isearch-string (buffer-string)) | |
1275 | (if (isearch-complete1) | |
8e1cae6d | 1276 | (progn |
08200510 RS |
1277 | (erase-buffer) |
1278 | (insert isearch-string)))) | |
8e1cae6d JB |
1279 | |
1280 | \f | |
1281 | ;;;============================================================== | |
1282 | ;; The search status stack (and isearch window-local variables, not used). | |
08200510 | 1283 | ;; Need a structure for this. |
8e1cae6d JB |
1284 | |
1285 | (defun isearch-top-state () | |
8e1cae6d JB |
1286 | (let ((cmd (car isearch-cmds))) |
1287 | (setq isearch-string (car cmd) | |
1288 | isearch-message (car (cdr cmd)) | |
1289 | isearch-success (nth 3 cmd) | |
1290 | isearch-forward (nth 4 cmd) | |
1291 | isearch-other-end (nth 5 cmd) | |
08200510 RS |
1292 | isearch-word (nth 6 cmd) |
1293 | isearch-invalid-regexp (nth 7 cmd) | |
1294 | isearch-wrapped (nth 8 cmd) | |
1295 | isearch-barrier (nth 9 cmd)) | |
8e1cae6d JB |
1296 | (goto-char (car (cdr (cdr cmd)))))) |
1297 | ||
1298 | (defun isearch-pop-state () | |
8e1cae6d JB |
1299 | (setq isearch-cmds (cdr isearch-cmds)) |
1300 | (isearch-top-state) | |
1301 | ) | |
1302 | ||
1303 | (defun isearch-push-state () | |
1304 | (setq isearch-cmds | |
1305 | (cons (list isearch-string isearch-message (point) | |
1306 | isearch-success isearch-forward isearch-other-end | |
08200510 | 1307 | isearch-word |
8e1cae6d JB |
1308 | isearch-invalid-regexp isearch-wrapped isearch-barrier) |
1309 | isearch-cmds))) | |
1310 | ||
8e1cae6d JB |
1311 | \f |
1312 | ;;;================================================================== | |
1313 | ;; Message string | |
1314 | ||
1315 | (defun isearch-message (&optional c-q-hack ellipsis) | |
1316 | ;; Generate and print the message string. | |
1317 | (let ((cursor-in-echo-area ellipsis) | |
1318 | (m (concat | |
08200510 | 1319 | (isearch-message-prefix c-q-hack ellipsis isearch-nonincremental) |
8e1cae6d JB |
1320 | isearch-message |
1321 | (isearch-message-suffix c-q-hack ellipsis) | |
1322 | ))) | |
1323 | (if c-q-hack m (message "%s" m)))) | |
1324 | ||
08200510 | 1325 | (defun isearch-message-prefix (&optional c-q-hack ellipsis nonincremental) |
8e1cae6d JB |
1326 | ;; If about to search, and previous search regexp was invalid, |
1327 | ;; check that it still is. If it is valid now, | |
1328 | ;; let the message we display while searching say that it is valid. | |
1329 | (and isearch-invalid-regexp ellipsis | |
1330 | (condition-case () | |
1331 | (progn (re-search-forward isearch-string (point) t) | |
1332 | (setq isearch-invalid-regexp nil)) | |
1333 | (error nil))) | |
1334 | ;; If currently failing, display no ellipsis. | |
1335 | (or isearch-success (setq ellipsis nil)) | |
1336 | (let ((m (concat (if isearch-success "" "failing ") | |
1337 | (if isearch-wrapped "wrapped ") | |
08200510 | 1338 | (if isearch-word "word " "") |
8e1cae6d | 1339 | (if isearch-regexp "regexp " "") |
08200510 | 1340 | (if nonincremental "search" "I-search") |
8e1cae6d JB |
1341 | (if isearch-forward ": " " backward: ") |
1342 | ))) | |
1343 | (aset m 0 (upcase (aref m 0))) | |
1344 | m)) | |
1345 | ||
1346 | ||
1347 | (defun isearch-message-suffix (&optional c-q-hack ellipsis) | |
1348 | (concat (if c-q-hack "^Q" "") | |
1349 | (if isearch-invalid-regexp | |
1350 | (concat " [" isearch-invalid-regexp "]") | |
1351 | ""))) | |
1352 | ||
1353 | \f | |
1354 | ;;;======================================================== | |
1355 | ;;; Searching | |
1356 | ||
1357 | (defun isearch-search () | |
1358 | ;; Do the search with the current search string. | |
1359 | (isearch-message nil t) | |
fdf5afa4 | 1360 | (if search-upper-case |
08200510 | 1361 | (setq isearch-case-fold-search (isearch-no-upper-case-p isearch-string))) |
8e1cae6d JB |
1362 | (condition-case lossage |
1363 | (let ((inhibit-quit nil) | |
1364 | (case-fold-search isearch-case-fold-search)) | |
1365 | (if isearch-regexp (setq isearch-invalid-regexp nil)) | |
1366 | (setq isearch-success | |
1367 | (funcall | |
08200510 RS |
1368 | (cond (isearch-word |
1369 | (if isearch-forward | |
1370 | 'word-search-forward 'word-search-backward)) | |
1371 | (isearch-regexp | |
1372 | (if isearch-forward | |
1373 | 're-search-forward 're-search-backward)) | |
1374 | (t | |
1375 | (if isearch-forward 'search-forward 'search-backward))) | |
8e1cae6d JB |
1376 | isearch-string nil t)) |
1377 | (if isearch-success | |
1378 | (setq isearch-other-end | |
1379 | (if isearch-forward (match-beginning 0) (match-end 0))))) | |
1380 | ||
08200510 | 1381 | (quit (isearch-unread ?\C-g) |
8e1cae6d JB |
1382 | (setq isearch-success nil)) |
1383 | ||
1384 | (invalid-regexp | |
1385 | (setq isearch-invalid-regexp (car (cdr lossage))) | |
1386 | (if (string-match | |
1387 | "\\`Premature \\|\\`Unmatched \\|\\`Invalid " | |
1388 | isearch-invalid-regexp) | |
f1c03125 RS |
1389 | (setq isearch-invalid-regexp "incomplete input"))) |
1390 | (error | |
1391 | ;; stack overflow in regexp search. | |
1392 | (setq isearch-invalid-regexp (car (cdr lossage))))) | |
8e1cae6d JB |
1393 | |
1394 | (if isearch-success | |
1395 | nil | |
1396 | ;; Ding if failed this time after succeeding last time. | |
1397 | (and (nth 3 (car isearch-cmds)) | |
1398 | (ding)) | |
1399 | (goto-char (nth 2 (car isearch-cmds))))) | |
1400 | ||
08200510 RS |
1401 | |
1402 | \f | |
1403 | ;;;======================================================== | |
1404 | ;;; Highlighting | |
1405 | ||
1406 | (defun isearch-highlight (begin end)) | |
1407 | (defun isearch-dehighlight (totally)) | |
1408 | ||
1409 | ;; lemacs uses faces | |
1410 | '(progn | |
1411 | (defvar isearch-extent nil) | |
1412 | ||
1413 | (or (find-face 'isearch) ;; this face is initialized by x-faces.el | |
1414 | (make-face 'isearch)) ;; since isearch is preloaded | |
1415 | ||
1416 | (defun isearch-lemacs-highlight (begin end) | |
1417 | (if (null isearch-highlight) | |
1418 | nil | |
1419 | (if (and (extentp isearch-extent) | |
1420 | (eq (extent-buffer isearch-extent) (current-buffer))) | |
1421 | (set-extent-endpoints isearch-extent begin end) | |
1422 | (if (and (extentp isearch-extent) | |
1423 | (bufferp (extent-buffer isearch-extent)) | |
1424 | (buffer-name (extent-buffer isearch-extent))) | |
1425 | (delete-extent isearch-extent)) | |
1426 | (setq isearch-extent (make-extent begin end (current-buffer)))) | |
1427 | (set-extent-face isearch-extent 'isearch))) | |
1428 | ||
1429 | (defun isearch-lemacs-dehighlight (totally) | |
1430 | (if (and isearch-highlight isearch-extent) | |
1431 | (if totally | |
1432 | (let ((inhibit-quit t)) | |
1433 | (if (and (extentp isearch-extent) | |
1434 | (bufferp (extent-buffer isearch-extent)) | |
1435 | (buffer-name (extent-buffer isearch-extent))) | |
1436 | (delete-extent isearch-extent)) | |
1437 | (setq isearch-extent nil)) | |
1438 | (if (and (extentp isearch-extent) | |
1439 | (bufferp (extent-buffer isearch-extent)) | |
1440 | (buffer-name (extent-buffer isearch-extent))) | |
1441 | (set-extent-face isearch-extent 'default) | |
1442 | (isearch-dehighlight t))))) | |
1443 | ||
b457cc3b ER |
1444 | (defalias 'isearch-highlight (symbol-function 'isearch-lemacs-highlight)) |
1445 | (defalias 'isearch-dehighlight (symbol-function 'isearch-lemacs-dehighlight)) | |
08200510 RS |
1446 | ) |
1447 | ||
1448 | ;;;=========================================================== | |
1449 | ;;; General utilities | |
1450 | ||
b457cc3b | 1451 | ;; (defalias 'isearch-member-equal (symbol-function 'member)) ; for emacs 19 |
08200510 RS |
1452 | |
1453 | (defun isearch-member-equal (item list) | |
1454 | "Return non-nil if ITEM is `equal' to some item in LIST. | |
1455 | Actually return the list whose car is that item." | |
1456 | (while (and list (not (equal item (car list)))) | |
1457 | (setq list (cdr list))) | |
1458 | list) | |
1459 | ||
1460 | ||
1461 | (defun isearch-no-upper-case-p (string) | |
1462 | "Return t if there are no upper case chars in string. | |
1463 | But upper case chars preceeded by \\ (but not \\\\) do not count since they | |
1464 | have special meaning in a regexp." | |
1465 | (let ((case-fold-search nil)) | |
1466 | (not (string-match "\\(^\\|\\\\\\\\\\|[^\\]\\)[A-Z]" string)))) | |
1467 | ||
1468 | ||
8e1cae6d | 1469 | ;;;================================================= |
08200510 | 1470 | ;;; Special functions for lemacs events. |
8e1cae6d | 1471 | |
08200510 RS |
1472 | ;; To quiet the byte-compiler. |
1473 | (defvar unread-command-event) | |
dbc4e1c1 | 1474 | (defvar unread-command-events) |
08200510 | 1475 | (defvar last-command-event) |
8e1cae6d | 1476 | |
08200510 RS |
1477 | (defun isearch-char-to-string (c) |
1478 | (if (integerp c) | |
1479 | (make-string 1 c) | |
8d7e4e80 RS |
1480 | (if (and (symbolp c) (get c 'ascii-character)) |
1481 | (make-string 1 (get c 'ascii-character)) | |
1482 | (make-string 1 (event-to-character c))))) | |
08200510 RS |
1483 | |
1484 | (defun isearch-text-char-description (c) | |
1485 | (isearch-char-to-string c)) | |
1486 | ||
8f90f594 | 1487 | (defun isearch-unread (&rest char-or-events) |
8f90f594 RS |
1488 | ;; General function to unread characters or events. |
1489 | (if isearch-gnu-emacs-events | |
e7cb0106 RS |
1490 | (setq unread-command-events |
1491 | (append char-or-events unread-command-events)) | |
8f90f594 | 1492 | (let ((char (if (cdr char-or-events) |
75e86b2e RS |
1493 | (progn |
1494 | (while (cdr char-or-events) | |
1495 | (setq char-or-events (cdr char-or-events))) | |
1496 | (+ 128 (car char-or-events))) | |
8f90f594 RS |
1497 | (car char-or-events)))) |
1498 | (if isearch-event-data-type | |
1499 | (setq unread-command-event char) | |
1500 | (setq unread-command-char char))))) | |
08200510 RS |
1501 | |
1502 | (defun isearch-last-command-char () | |
1503 | ;; General function to return the last command character. | |
a5dcf63f | 1504 | (if isearch-event-data-type |
08200510 RS |
1505 | last-command-event |
1506 | last-command-char)) | |
1507 | ||
1508 | ||
1509 | ||
1510 | \f | |
1511 | ;;;======================================================== | |
1512 | ;;; Exiting in lemacs | |
1513 | ||
1514 | ;; This is a large amount of code to support automatic termination of | |
1515 | ;; isearch-mode when a command (however it is invoked) is not an | |
1516 | ;; isearch command, or the buffer is switched out from under | |
1517 | ;; isearch-mode. Only later versions of lemacs have the pre-command-hook. | |
1518 | ||
1519 | ;;(if isearch-pre-command-hook-exists | |
1520 | ;;(progn | |
1521 | ||
1522 | ;;;; This list must be modified whenever the available commands are modified. | |
1523 | ;;(mapcar (function (lambda (command) | |
1524 | ;; (put command 'isearch-command t))) | |
1525 | ;; '(isearch-printing-char | |
1526 | ;; isearch-return-char | |
1527 | ;; isearch-repeat-forward | |
1528 | ;; isearch-repeat-backward | |
1529 | ;; isearch-delete-char | |
1530 | ;; isearch-abort | |
1531 | ;; isearch-quote-char | |
1532 | ;; isearch-exit | |
1533 | ;; isearch-printing-char | |
1534 | ;; isearch-printing-char | |
1535 | ;; isearch-yank-word | |
1536 | ;; isearch-yank-line | |
1537 | ;; isearch-*-char | |
1538 | ;; isearch-*-char | |
1539 | ;; isearch-|-char | |
1540 | ;; isearch-toggle-regexp | |
1541 | ;; isearch-edit-string | |
1542 | ;; isearch-mode-help | |
1543 | ;; isearch-ring-advance | |
1544 | ;; isearch-ring-retreat | |
1545 | ;; isearch-ring-advance-edit | |
1546 | ;; isearch-ring-retreat-edit | |
1547 | ;; isearch-whitespace-chars | |
1548 | ;; isearch-complete | |
1549 | ;; isearch-complete-edit | |
1550 | ;; isearch-edit-string | |
1551 | ;; isearch-toggle-regexp | |
1552 | ;; ;; The following may not be needed since isearch-mode is off already. | |
1553 | ;; isearch-forward-exit-minibuffer | |
1554 | ;; isearch-reverse-exit-minibuffer | |
1555 | ;; isearch-nonincremental-exit-minibuffer)) | |
1556 | ||
1557 | ;;(defun isearch-pre-command-hook () | |
1558 | ;; ;; | |
1559 | ;; ;; For use as the value of `pre-command-hook' when isearch-mode is active. | |
1560 | ;; ;; If the command about to be executed is not one of the isearch commands, | |
1561 | ;; ;; then isearch-mode is turned off before that command is executed. | |
1562 | ;; ;; | |
1563 | ;; ;; If the command about to be executed is self-insert-command, or is a | |
1564 | ;; ;; keyboard macro of a single key sequence which is bound to self-insert- | |
1565 | ;; ;; command, then we add those chars to the search ring instead of inserting | |
1566 | ;; ;; them in the buffer. In this way, the set of self-searching characters | |
1567 | ;; ;; need not be exhaustively enumerated, but is derived from other maps. | |
1568 | ;; ;; | |
1569 | ;; (isearch-maybe-frob-keyboard-macros) | |
1570 | ;; (if (and (symbolp this-command) | |
1571 | ;; (get this-command 'isearch-command)) | |
1572 | ;; nil | |
1573 | ;; (isearch-done))) | |
1574 | ||
1575 | ;;(defun isearch-maybe-frob-keyboard-macros () | |
1576 | ;; ;; | |
1577 | ;; ;; If the command about to be executed is `self-insert-command' then change | |
1578 | ;; ;; the command to `isearch-printing-char' instead, meaning add the last- | |
1579 | ;; ;; typed character to the search string. | |
1580 | ;; ;; | |
1581 | ;; ;; If `this-command' is a string or a vector (that is, a keyboard macro) | |
1582 | ;; ;; and it contains only one command, which is bound to self-insert-command, | |
1583 | ;; ;; then do the same thing as for self-inserting commands: arrange for that | |
1584 | ;; ;; character to be added to the search string. If we didn't do this, then | |
1585 | ;; ;; typing a compose sequence (a la x-compose.el) would terminate the search | |
1586 | ;; ;; and insert the character, instead of searching for that character. | |
1587 | ;; ;; | |
1588 | ;; (cond ((eq this-command 'self-insert-command) | |
1589 | ;; (setq this-command 'isearch-printing-char)) | |
1590 | ;; ((and (stringp this-command) | |
1591 | ;; (eq (key-binding this-command) 'self-insert-command)) | |
1592 | ;; (setq last-command-char (aref this-command 0) | |
1593 | ;; last-command-event (character-to-event last-command-char) | |
1594 | ;; this-command 'isearch-printing-char)) | |
1595 | ;; ((and (vectorp this-command) | |
1596 | ;; (eq (key-binding this-command) 'self-insert-command)) | |
1597 | ;; (let* ((desc (aref this-command 0)) | |
1598 | ;; (code (cond ((integerp desc) desc) | |
1599 | ;; ((symbolp desc) (get desc character-set-property)) | |
1600 | ;; ((consp desc) | |
1601 | ;; (and (null (cdr desc)) | |
1602 | ;; (get (car desc) character-set-property))) | |
1603 | ;; (t nil)))) | |
1604 | ;; (if code | |
1605 | ;; (setq last-command-char code | |
1606 | ;; last-command-event (character-to-event last-command-char) | |
1607 | ;; this-command 'isearch-printing-char)))) | |
1608 | ;; )) | |
1609 | ||
1610 | ;;)) | |
4ae7d00a | 1611 | |
3b1e4dd1 | 1612 | ;;; isearch.el ends here |