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76550a57 | 1 | ;;; isearch.el --- incremental search minor mode. |
3b1e4dd1 | 2 | |
b78559b0 | 3 | ;; Copyright (C) 1992, 1993 Free Software Foundation, Inc. |
3a801d0c | 4 | |
3b1e4dd1 ER |
5 | ;; Author: Daniel LaLiberte <liberte@cs.uiuc.edu> |
6 | ||
849cfd72 | 7 | ;; |$Date: 1994/01/15 16:24:47 $|$Revision: 1.61 $ |
8e1cae6d | 8 | |
54d2ecd3 | 9 | ;; This file is part of GNU Emacs. |
8e1cae6d JB |
10 | |
11 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
12 | ;; but WITHOUT ANY WARRANTY. No author or distributor | |
13 | ;; accepts responsibility to anyone for the consequences of using it | |
14 | ;; or for whether it serves any particular purpose or works at all, | |
15 | ;; unless he says so in writing. Refer to the GNU Emacs General Public | |
16 | ;; License for full details. | |
17 | ||
18 | ;; Everyone is granted permission to copy, modify and redistribute | |
19 | ;; GNU Emacs, but only under the conditions described in the | |
20 | ;; GNU Emacs General Public License. A copy of this license is | |
21 | ;; supposed to have been given to you along with GNU Emacs so you | |
22 | ;; can know your rights and responsibilities. It should be in a | |
23 | ;; file named COPYING. Among other things, the copyright notice | |
24 | ;; and this notice must be preserved on all copies. | |
25 | ||
3b1e4dd1 ER |
26 | ;;; Commentary: |
27 | ||
8e1cae6d JB |
28 | ;;;==================================================================== |
29 | ;; Instructions | |
30 | ||
08200510 RS |
31 | ;; For programmed use of isearch-mode, e.g. calling (isearch-forward), |
32 | ;; isearch-mode behaves modally and does not return until the search | |
33 | ;; is completed. It uses a recursive-edit to behave this way. Note: | |
34 | ;; gnus does it wrong: (call-interactively 'isearch-forward). | |
35 | ||
8e1cae6d | 36 | ;; The key bindings active within isearch-mode are defined below in |
08200510 RS |
37 | ;; `isearch-mode-map' which is given bindings close to the default |
38 | ;; characters of the original isearch.el. With `isearch-mode', | |
39 | ;; however, you can bind multi-character keys and it should be easier | |
40 | ;; to add new commands. One bug though: keys with meta-prefix cannot | |
41 | ;; be longer than two chars. Also see minibuffer-local-isearch-map | |
42 | ;; for bindings active during `isearch-edit-string'. | |
43 | ||
44 | ;; Note to emacs version 19 users: isearch-mode should work even if | |
45 | ;; you switch windows with the mouse, in which case isearch-mode is | |
46 | ;; terminated automatically before the switch. This is true of lemacs | |
47 | ;; too, with a few more cleanups I've neglected in this release. | |
48 | ;; No one has supplied patches for epoch yet. | |
49 | ||
50 | ;; The search ring and completion commands automatically put you in | |
51 | ;; the minibuffer to edit the string. This gives you a chance to | |
52 | ;; modify the search string before executing the search. There are | |
53 | ;; three commands to terminate the editing: C-s and C-r exit the | |
54 | ;; minibuffer and search forward and reverse respectively, while C-m | |
55 | ;; exits and does a nonincremental search. | |
56 | ||
57 | ;; Exiting immediately from isearch uses isearch-edit-string instead | |
58 | ;; of nonincremental-search, if search-nonincremental-instead is non-nil. | |
59 | ;; The name of this option should probably be changed if we decide to | |
60 | ;; keep the behavior. No point in forcing nonincremental search until | |
61 | ;; the last possible moment. | |
62 | ||
63 | ;; TODO | |
eb8c3be9 | 64 | ;; - Integrate the emacs 19 generalized command history. |
08200510 RS |
65 | ;; - Think about incorporating query-replace. |
66 | ;; - Hooks and options for failed search. | |
282d89c0 | 67 | |
3b1e4dd1 ER |
68 | ;;; Change Log: |
69 | ||
8cb2ceaa RS |
70 | ;;; Changes before those recorded in ChangeLog: |
71 | ||
08200510 RS |
72 | ;;; Revision 1.4 92/09/14 16:26:02 liberte |
73 | ;;; Added prefix args to isearch-forward, etc. to switch between | |
74 | ;;; string and regular expression searching. | |
75 | ;;; Added some support for lemacs. | |
76 | ;;; Added general isearch-highlight option - but only for lemacs so far. | |
77 | ;;; Added support for frame switching in emacs 19. | |
78 | ;;; Added word search option to isearch-edit-string. | |
79 | ;;; Renamed isearch-quit to isearch-abort. | |
80 | ;;; Numerous changes to comments and doc strings. | |
282d89c0 | 81 | ;;; |
08200510 RS |
82 | ;;; Revision 1.3 92/06/29 13:10:08 liberte |
83 | ;;; Moved modal isearch-mode handling into isearch-mode. | |
84 | ;;; Got rid of buffer-local isearch variables. | |
85 | ;;; isearch-edit-string used by ring adjustments, completion, and | |
86 | ;;; nonincremental searching. C-s and C-r are additional exit commands. | |
87 | ;;; Renamed all regex to regexp. | |
88 | ;;; Got rid of found-start and found-point globals. | |
89 | ;;; Generalized handling of upper-case chars. | |
90 | ||
91 | ;;; Revision 1.2 92/05/27 11:33:57 liberte | |
92 | ;;; Emacs version 19 has a search ring, which is supported here. | |
93 | ;;; Other fixes found in the version 19 isearch are included here. | |
94 | ;;; | |
95 | ;;; Also see variables search-caps-disable-folding, | |
96 | ;;; search-nonincremental-instead, search-whitespace-regexp, and | |
97 | ;;; commands isearch-toggle-regexp, isearch-edit-string. | |
98 | ;;; | |
99 | ;;; semi-modal isearching is supported. | |
282d89c0 ER |
100 | |
101 | ;;; Changes for 1.1 | |
102 | ;;; 3/18/92 Fixed invalid-regexp. | |
103 | ;;; 3/18/92 Fixed yanking in regexps. | |
104 | ||
3b1e4dd1 | 105 | ;;; Code: |
08200510 RS |
106 | |
107 | \f | |
108 | ;;;========================================================================= | |
109 | ;;; Emacs features | |
110 | ||
111 | ;; isearch-mode takes advantage of the features provided by several | |
112 | ;; different versions of emacs. Rather than testing the version of | |
113 | ;; emacs, several constants are defined, one for each of the features. | |
114 | ;; Each of the tests below must work on any version of emacs. | |
115 | ;; (Perhaps provide and featurep could be used for this purpose.) | |
116 | ||
1a3a6707 | 117 | (defconst isearch-gnu-emacs-events (fboundp 'set-frame-height)) ;; emacs 19 |
08200510 | 118 | (defconst isearch-pre-command-hook-exists (boundp 'pre-command-hook)) ;; lemacs |
a5dcf63f | 119 | (defconst isearch-event-data-type nil) ;; lemacs |
08200510 | 120 | |
fdf5afa4 | 121 | (defconst search-exit-option t |
a8f783b2 | 122 | "*Non-nil means random control characters terminate incremental search.") |
fdf5afa4 RS |
123 | |
124 | (defvar search-slow-window-lines 1 | |
125 | "*Number of lines in slow search display windows. | |
126 | These are the short windows used during incremental search on slow terminals. | |
127 | Negative means put the slow search window at the top (normally it's at bottom) | |
128 | and the value is minus the number of lines.") | |
129 | ||
130 | (defvar search-slow-speed 1200 | |
131 | "*Highest terminal speed at which to use \"slow\" style incremental search. | |
132 | This is the style where a one-line window is created to show the line | |
133 | that the search has reached.") | |
8e1cae6d JB |
134 | |
135 | ;;;======================================================================== | |
136 | ;;; Some additional options and constants. | |
137 | ||
b78559b0 | 138 | (defvar search-upper-case 'not-yanks |
8e1cae6d | 139 | "*If non-nil, upper case chars disable case fold searching. |
08200510 RS |
140 | That is, upper and lower case chars must match exactly. |
141 | This applies no matter where the chars come from, but does not | |
fdf5afa4 RS |
142 | apply to chars in regexps that are prefixed with `\\'. |
143 | If this value is `not-yanks', yanked text is always downcased.") | |
8e1cae6d JB |
144 | |
145 | (defvar search-nonincremental-instead t | |
146 | "*If non-nil, do a nonincremental search instead if exiting immediately. | |
08200510 RS |
147 | Actually, `isearch-edit-string' is called to let you enter the search |
148 | string, and RET terminates editing and does a nonincremental search.") | |
8e1cae6d JB |
149 | |
150 | (defconst search-whitespace-regexp "\\s-+" | |
151 | "*If non-nil, regular expression to match a sequence of whitespace chars. | |
152 | You might want to use something like \"[ \\t\\r\\n]+\" instead.") | |
153 | ||
a8f783b2 RS |
154 | ;; I removed the * from the doc string because highlighting is not |
155 | ;; currently a clean thing to do. Once highlighting is made clean, | |
156 | ;; this feature can be re-enabled and advertised. | |
08200510 | 157 | (defvar search-highlight nil |
b78559b0 | 158 | "*Non-nil means incremental search highlights the current match.") |
08200510 RS |
159 | |
160 | (defvar isearch-mode-hook nil | |
161 | "Function(s) to call after starting up an incremental search.") | |
162 | ||
163 | (defvar isearch-mode-end-hook nil | |
164 | "Function(s) to call after terminating an incremental search.") | |
165 | ||
8e1cae6d JB |
166 | ;;;================================================================== |
167 | ;;; Search ring. | |
8e1cae6d JB |
168 | |
169 | (defvar search-ring nil | |
170 | "List of search string sequences.") | |
08200510 | 171 | (defvar regexp-search-ring nil |
8e1cae6d JB |
172 | "List of regular expression search string sequences.") |
173 | ||
174 | (defconst search-ring-max 16 | |
175 | "*Maximum length of search ring before oldest elements are thrown away.") | |
08200510 RS |
176 | (defconst regexp-search-ring-max 16 |
177 | "*Maximum length of regexp search ring before oldest elements are thrown away.") | |
8e1cae6d JB |
178 | |
179 | (defvar search-ring-yank-pointer nil | |
a5dcf63f RS |
180 | "Index in `search-ring' of last string reused. |
181 | nil if none yet.") | |
08200510 | 182 | (defvar regexp-search-ring-yank-pointer nil |
a5dcf63f RS |
183 | "Index in `regexp-search-ring' of last string reused. |
184 | nil if none yet.") | |
8e1cae6d | 185 | |
08200510 RS |
186 | (defvar search-ring-update nil |
187 | "*Non-nil if advancing or retreating in the search ring should cause search. | |
188 | Default value, nil, means edit the string instead.") | |
189 | ||
8e1cae6d JB |
190 | ;;;==================================================== |
191 | ;;; Define isearch-mode keymap. | |
192 | ||
193 | (defvar isearch-mode-map nil | |
194 | "Keymap for isearch-mode.") | |
195 | ||
08200510 RS |
196 | (or isearch-mode-map |
197 | (let* ((i 0) | |
fdf5afa4 | 198 | (map (make-keymap))) |
fcf8ba15 RS |
199 | (or (vectorp (nth 1 map)) |
200 | (error "The initialization of isearch-mode-map must be updated")) | |
201 | ;; Give this map a vector 256 long, for dense binding | |
202 | ;; of a larger range of ordinary characters. | |
203 | (setcar (cdr map) (make-vector 256 nil)) | |
08200510 | 204 | |
ac689515 RS |
205 | ;; Make function keys, etc, exit the search. |
206 | (define-key map [t] 'isearch-other-control-char) | |
08200510 | 207 | ;; Control chars, by default, end isearch mode transparently. |
ac689515 RS |
208 | ;; We need these explicit definitions because, in a dense keymap, |
209 | ;; the binding for t does not affect characters. | |
210 | ;; We use a dense keymap to save space. | |
08200510 RS |
211 | (while (< i ?\ ) |
212 | (define-key map (make-string 1 i) 'isearch-other-control-char) | |
213 | (setq i (1+ i))) | |
214 | ||
8cb2ceaa | 215 | ;; Printing chars extend the search string by default. |
ac689515 | 216 | (setq i ?\ ) |
8d7e4e80 | 217 | (while (< i (length (nth 1 map))) |
8cb2ceaa | 218 | (define-key map (vector i) 'isearch-printing-char) |
08200510 RS |
219 | (setq i (1+ i))) |
220 | ||
221 | ;; Several non-printing chars change the searching behavior. | |
222 | (define-key map "\C-s" 'isearch-repeat-forward) | |
223 | (define-key map "\C-r" 'isearch-repeat-backward) | |
224 | (define-key map "\177" 'isearch-delete-char) | |
225 | (define-key map "\C-g" 'isearch-abort) | |
8e1cae6d | 226 | |
08200510 RS |
227 | (define-key map "\C-q" 'isearch-quote-char) |
228 | ||
08200510 RS |
229 | (define-key map "\r" 'isearch-exit) |
230 | (define-key map "\C-j" 'isearch-printing-char) | |
231 | (define-key map "\t" 'isearch-printing-char) | |
232 | (define-key map " " 'isearch-whitespace-chars) | |
8e1cae6d | 233 | |
08200510 RS |
234 | (define-key map "\C-w" 'isearch-yank-word) |
235 | (define-key map "\C-y" 'isearch-yank-line) | |
30d47262 RS |
236 | (define-key map [mouse-2] 'isearch-yank-kill) |
237 | ;; This overrides the default binding for t. | |
238 | (define-key map [down-mouse-2] 'nil) | |
08200510 | 239 | |
e7cb0106 RS |
240 | ;; Bind the ASCII-equivalent "function keys" explicitly |
241 | ;; if we bind their equivalents, | |
242 | ;; since otherwise the default binding would override. | |
243 | ;; We bind [escape] below. | |
244 | (define-key map [tab] 'isearch-printing-char) | |
f7ead361 RS |
245 | (define-key map [kp-0] 'isearch-printing-char) |
246 | (define-key map [kp-1] 'isearch-printing-char) | |
247 | (define-key map [kp-2] 'isearch-printing-char) | |
248 | (define-key map [kp-3] 'isearch-printing-char) | |
249 | (define-key map [kp-4] 'isearch-printing-char) | |
250 | (define-key map [kp-5] 'isearch-printing-char) | |
251 | (define-key map [kp-6] 'isearch-printing-char) | |
252 | (define-key map [kp-7] 'isearch-printing-char) | |
253 | (define-key map [kp-8] 'isearch-printing-char) | |
254 | (define-key map [kp-9] 'isearch-printing-char) | |
255 | (define-key map [kp-add] 'isearch-printing-char) | |
256 | (define-key map [kp-subtract] 'isearch-printing-char) | |
257 | (define-key map [kp-multiply] 'isearch-printing-char) | |
258 | (define-key map [kp-divide] 'isearch-printing-char) | |
259 | (define-key map [kp-decimal] 'isearch-printing-char) | |
260 | (define-key map [kp-separator] 'isearch-printing-char) | |
261 | (define-key map [kp-equal] 'isearch-printing-char) | |
262 | (define-key map [kp-tab] 'isearch-printing-char) | |
263 | (define-key map [kp-space] 'isearch-printing-char) | |
264 | (define-key map [kp-enter] 'isearch-exit) | |
e7cb0106 RS |
265 | (define-key map [delete] 'isearch-delete-char) |
266 | (define-key map [backspace] 'isearch-delete-char) | |
267 | (define-key map [return] 'isearch-exit) | |
268 | (define-key map [newline] 'isearch-printing-char) | |
269 | ||
08200510 RS |
270 | ;; Define keys for regexp chars * ? |. |
271 | ;; Nothing special for + because it matches at least once. | |
272 | (define-key map "*" 'isearch-*-char) | |
273 | (define-key map "?" 'isearch-*-char) | |
274 | (define-key map "|" 'isearch-|-char) | |
275 | ||
58f1634a RS |
276 | ;;; Turned off because I find I expect to get the global definition--rms. |
277 | ;;; ;; Instead bind C-h to special help command for isearch-mode. | |
278 | ;;; (define-key map "\C-h" 'isearch-mode-help) | |
08200510 RS |
279 | |
280 | ;; To handle local bindings with meta char prefix keys, define | |
281 | ;; another full keymap. This must be done for any other prefix | |
282 | ;; keys as well, one full keymap per char of the prefix key. It | |
283 | ;; would be simpler to disable the global keymap, and/or have a | |
284 | ;; default local key binding for any key not otherwise bound. | |
e7cb0106 RS |
285 | (let ((meta-map (make-sparse-keymap))) |
286 | (define-key map (char-to-string meta-prefix-char) meta-map) | |
287 | (define-key map [escape] meta-map)) | |
ac689515 | 288 | (define-key map (vector meta-prefix-char t) 'isearch-other-meta-char) |
08200510 RS |
289 | |
290 | (define-key map "\M-n" 'isearch-ring-advance) | |
291 | (define-key map "\M-p" 'isearch-ring-retreat) | |
30d47262 | 292 | (define-key map "\M-y" 'isearch-yank-kill) |
1a3a6707 | 293 | |
08200510 RS |
294 | (define-key map "\M-\t" 'isearch-complete) |
295 | ||
296 | ;; For emacs 19, switching frames should terminate isearch-mode | |
1a3a6707 | 297 | (if isearch-gnu-emacs-events |
08200510 RS |
298 | (define-key map [switch-frame] 'isearch-switch-frame-handler)) |
299 | ||
300 | (setq isearch-mode-map map) | |
301 | )) | |
8e1cae6d | 302 | |
08200510 RS |
303 | ;; Some bindings you may want to put in your isearch-mode-hook. |
304 | ;; Suggest some alternates... | |
305 | ;; (define-key isearch-mode-map "\C-t" 'isearch-toggle-regexp) | |
306 | ;; (define-key isearch-mode-map "\C-^" 'isearch-edit-string) | |
8e1cae6d | 307 | |
8e1cae6d | 308 | |
08200510 RS |
309 | (defvar minibuffer-local-isearch-map nil |
310 | "Keymap for editing isearch strings in the minibuffer.") | |
8e1cae6d | 311 | |
08200510 RS |
312 | (or minibuffer-local-isearch-map |
313 | (let ((map (copy-keymap minibuffer-local-map))) | |
314 | (define-key map "\r" 'isearch-nonincremental-exit-minibuffer) | |
35a4d143 RS |
315 | (define-key map "\M-n" 'isearch-ring-advance-edit) |
316 | (define-key map "\M-p" 'isearch-ring-retreat-edit) | |
08200510 RS |
317 | (define-key map "\M-\t" 'isearch-complete-edit) |
318 | (define-key map "\C-s" 'isearch-forward-exit-minibuffer) | |
319 | (define-key map "\C-r" 'isearch-reverse-exit-minibuffer) | |
320 | (setq minibuffer-local-isearch-map map) | |
321 | )) | |
8e1cae6d JB |
322 | |
323 | ;;;======================================================== | |
324 | ;; Internal variables declared globally for byte-compiler. | |
08200510 RS |
325 | ;; These are all set with setq while isearching |
326 | ;; and bound locally while editing the search string. | |
327 | ||
328 | (defvar isearch-forward nil) ; Searching in the forward direction. | |
329 | (defvar isearch-regexp nil) ; Searching for a regexp. | |
330 | (defvar isearch-word nil) ; Searching for words. | |
331 | ||
332 | (defvar isearch-cmds nil) ; Stack of search status sets. | |
333 | (defvar isearch-string "") ; The current search string. | |
334 | (defvar isearch-message "") ; text-char-description version of isearch-string | |
335 | ||
336 | (defvar isearch-success t) ; Searching is currently successful. | |
337 | (defvar isearch-invalid-regexp nil) ; Regexp not well formed. | |
c5f6b356 | 338 | (defvar isearch-within-brackets nil) ; Regexp has unclosed [. |
08200510 RS |
339 | (defvar isearch-other-end nil) ; Start (end) of match if forward (backward). |
340 | (defvar isearch-wrapped nil) ; Searching restarted from the top (bottom). | |
8e1cae6d JB |
341 | (defvar isearch-barrier 0) |
342 | ||
08200510 | 343 | (defvar isearch-case-fold-search nil) ; case-fold-search while searching. |
8e1cae6d JB |
344 | |
345 | (defvar isearch-adjusted nil) | |
346 | (defvar isearch-slow-terminal-mode nil) | |
08200510 RS |
347 | ;;; If t, using a small window. |
348 | (defvar isearch-small-window nil) | |
8e1cae6d | 349 | (defvar isearch-opoint 0) |
08200510 RS |
350 | ;;; The window configuration active at the beginning of the search. |
351 | (defvar isearch-window-configuration nil) | |
8e1cae6d | 352 | |
08200510 RS |
353 | ;; Flag to indicate a yank occurred, so don't move the cursor. |
354 | (defvar isearch-yank-flag nil) | |
8e1cae6d | 355 | |
08200510 RS |
356 | ;;; A function to be called after each input character is processed. |
357 | ;;; (It is not called after characters that exit the search.) | |
358 | ;;; It is only set from an optional argument to `isearch-mode'. | |
359 | (defvar isearch-op-fun nil) | |
8e1cae6d | 360 | |
08200510 RS |
361 | ;;; Is isearch-mode in a recursive edit for modal searching. |
362 | (defvar isearch-recursive-edit nil) | |
8e1cae6d | 363 | |
08200510 RS |
364 | ;;; Should isearch be terminated after doing one search? |
365 | (defvar isearch-nonincremental nil) | |
366 | ||
367 | ;; New value of isearch-forward after isearch-edit-string. | |
368 | (defvar isearch-new-forward nil) | |
8e1cae6d | 369 | |
8e1cae6d JB |
370 | |
371 | ;;;============================================================== | |
372 | ;; Minor-mode-alist changes - kind of redundant with the | |
373 | ;; echo area, but if isearching in multiple windows, it can be useful. | |
374 | ||
375 | (or (assq 'isearch-mode minor-mode-alist) | |
376 | (nconc minor-mode-alist | |
377 | (list '(isearch-mode isearch-mode)))) | |
378 | ||
08200510 | 379 | (defvar isearch-mode nil) ;; Name of the minor mode, if non-nil. |
8e1cae6d JB |
380 | (make-variable-buffer-local 'isearch-mode) |
381 | ||
fdf5afa4 RS |
382 | (define-key global-map "\C-s" 'isearch-forward) |
383 | (define-key esc-map "\C-s" 'isearch-forward-regexp) | |
384 | (define-key global-map "\C-r" 'isearch-backward) | |
385 | (define-key esc-map "\C-r" 'isearch-backward-regexp) | |
386 | ||
8e1cae6d JB |
387 | ;;;=============================================================== |
388 | ;;; Entry points to isearch-mode. | |
08200510 | 389 | ;;; These four functions should replace those in loaddefs.el |
b457cc3b | 390 | ;;; An alternative is to defalias isearch-forward etc to isearch-mode, |
08200510 | 391 | ;;; and look at this-command to set the options accordingly. |
8e1cae6d | 392 | |
eceee2c0 | 393 | (defun isearch-forward (&optional regexp-p no-recursive-edit) |
8e1cae6d JB |
394 | "\ |
395 | Do incremental search forward. | |
08200510 RS |
396 | With a prefix argument, do an incremental regular expression search instead. |
397 | \\<isearch-mode-map> | |
8e1cae6d | 398 | As you type characters, they add to the search string and are found. |
08200510 | 399 | The following non-printing keys are bound in `isearch-mode-map'. |
8e1cae6d | 400 | |
08200510 | 401 | Type \\[isearch-delete-char] to cancel characters from end of search string. |
8e1cae6d | 402 | Type \\[isearch-exit] to exit, leaving point at location found. |
08200510 RS |
403 | Type LFD (C-j) to match end of line. |
404 | Type \\[isearch-repeat-forward] to search again forward,\ | |
405 | \\[isearch-repeat-backward] to search again backward. | |
406 | Type \\[isearch-yank-word] to yank word from buffer onto end of search\ | |
407 | string and search for it. | |
408 | Type \\[isearch-yank-line] to yank rest of line onto end of search string\ | |
409 | and search for it. | |
8e1cae6d | 410 | Type \\[isearch-quote-char] to quote control character to search for it. |
08200510 RS |
411 | \\[isearch-abort] while searching or when search has failed cancels input\ |
412 | back to what has | |
413 | been found successfully. | |
414 | \\[isearch-abort] when search is successful aborts and moves point to\ | |
415 | starting point. | |
8e1cae6d JB |
416 | |
417 | Also supported is a search ring of the previous 16 search strings. | |
418 | Type \\[isearch-ring-advance] to search for the next item in the search ring. | |
08200510 RS |
419 | Type \\[isearch-ring-retreat] to search for the previous item in the search\ |
420 | ring. | |
421 | Type \\[isearch-complete] to complete the search string using the search ring. | |
8e1cae6d | 422 | |
08200510 RS |
423 | The above keys, bound in `isearch-mode-map', are often controlled by |
424 | options; do M-x apropos on search-.* to find them. | |
8e1cae6d | 425 | Other control and meta characters terminate the search |
08200510 | 426 | and are then executed normally (depending on `search-exit-option'). |
8e1cae6d | 427 | |
08200510 RS |
428 | If this function is called non-interactively, it does not return to |
429 | the calling function until the search is done." | |
8e1cae6d | 430 | |
eceee2c0 | 431 | (interactive "P\np") |
4ae7d00a | 432 | (isearch-mode t (not (null regexp-p)) nil (not no-recursive-edit))) |
8e1cae6d | 433 | |
eceee2c0 | 434 | (defun isearch-forward-regexp (&optional not-regexp no-recursive-edit) |
8e1cae6d JB |
435 | "\ |
436 | Do incremental search forward for regular expression. | |
08200510 | 437 | With a prefix argument, do a regular string search instead. |
8e1cae6d JB |
438 | Like ordinary incremental search except that your input |
439 | is treated as a regexp. See \\[isearch-forward] for more info." | |
eceee2c0 | 440 | (interactive "P\np") |
4ae7d00a | 441 | (isearch-mode t (null not-regexp) nil (not no-recursive-edit))) |
8e1cae6d | 442 | |
eceee2c0 | 443 | (defun isearch-backward (&optional regexp-p no-recursive-edit) |
8e1cae6d JB |
444 | "\ |
445 | Do incremental search backward. | |
08200510 | 446 | With a prefix argument, do a regular expression search instead. |
8e1cae6d | 447 | See \\[isearch-forward] for more information." |
eceee2c0 | 448 | (interactive "P\np") |
4ae7d00a | 449 | (isearch-mode nil (not (null regexp-p)) nil (not no-recursive-edit))) |
8e1cae6d | 450 | |
eceee2c0 | 451 | (defun isearch-backward-regexp (&optional not-regexp no-recursive-edit) |
8e1cae6d JB |
452 | "\ |
453 | Do incremental search backward for regular expression. | |
08200510 | 454 | With a prefix argument, do a regular string search instead. |
8e1cae6d JB |
455 | Like ordinary incremental search except that your input |
456 | is treated as a regexp. See \\[isearch-forward] for more info." | |
eceee2c0 | 457 | (interactive "P\np") |
4ae7d00a | 458 | (isearch-mode nil (null not-regexp) nil (not no-recursive-edit))) |
08200510 RS |
459 | |
460 | ||
461 | (defun isearch-mode-help () | |
462 | (interactive) | |
463 | (describe-function 'isearch-forward) | |
464 | (isearch-update)) | |
8e1cae6d JB |
465 | |
466 | \f | |
467 | ;;;================================================================== | |
468 | ;; isearch-mode only sets up incremental search for the minor mode. | |
469 | ;; All the work is done by the isearch-mode commands. | |
470 | ||
08200510 RS |
471 | ;; Not used yet: |
472 | ;;(defconst isearch-commands '(isearch-forward isearch-backward | |
473 | ;; isearch-forward-regexp isearch-backward-regexp) | |
474 | ;; "List of commands for which isearch-mode does not recursive-edit.") | |
475 | ||
476 | ||
477 | (defun isearch-mode (forward &optional regexp op-fun recursive-edit word-p) | |
8e1cae6d | 478 | "Start isearch minor mode. Called by isearch-forward, etc." |
8e1cae6d JB |
479 | |
480 | ;; Initialize global vars. | |
481 | (setq isearch-forward forward | |
482 | isearch-regexp regexp | |
08200510 | 483 | isearch-word word-p |
8e1cae6d JB |
484 | isearch-op-fun op-fun |
485 | isearch-case-fold-search case-fold-search | |
486 | isearch-string "" | |
487 | isearch-message "" | |
488 | isearch-cmds nil | |
489 | isearch-success t | |
490 | isearch-wrapped nil | |
491 | isearch-barrier (point) | |
492 | isearch-adjusted nil | |
493 | isearch-yank-flag nil | |
494 | isearch-invalid-regexp nil | |
c5f6b356 | 495 | isearch-within-brackets nil |
dd492f04 JA |
496 | ;; Use (baud-rate) for now, for sake of other versions. |
497 | isearch-slow-terminal-mode (and (<= (baud-rate) search-slow-speed) | |
8e1cae6d JB |
498 | (> (window-height) |
499 | (* 4 search-slow-window-lines))) | |
500 | isearch-other-end nil | |
501 | isearch-small-window nil | |
8e1cae6d | 502 | |
8e1cae6d | 503 | isearch-opoint (point) |
a5dcf63f RS |
504 | search-ring-yank-pointer nil |
505 | regexp-search-ring-yank-pointer nil) | |
292a8dff RS |
506 | (setq isearch-window-configuration |
507 | (if isearch-slow-terminal-mode (current-window-configuration) nil)) | |
70418205 | 508 | |
2ed45c8b RS |
509 | ;; This was for Lucid Emacs. But now that we have pre-command-hook, |
510 | ;; it causes trouble. | |
511 | ;; (if isearch-pre-command-hook-exists | |
512 | ;; (add-hook 'pre-command-hook 'isearch-pre-command-hook)) | |
8e1cae6d JB |
513 | (setq isearch-mode " Isearch") ;; forward? regexp? |
514 | (set-buffer-modified-p (buffer-modified-p)) ; update modeline | |
515 | ||
7492a21e RS |
516 | ;; It is ugly to show region highlighting while the search |
517 | ;; is going on. And we don't want the mark active at the end either. | |
518 | (setq deactivate-mark t) | |
519 | ||
8e1cae6d JB |
520 | (isearch-push-state) |
521 | ||
849cfd72 RS |
522 | (make-local-variable 'overriding-local-map) |
523 | (setq overriding-local-map isearch-mode-map) | |
8e1cae6d JB |
524 | (isearch-update) |
525 | (run-hooks 'isearch-mode-hook) | |
08200510 RS |
526 | |
527 | ;; isearch-mode can be made modal (in the sense of not returning to | |
528 | ;; the calling function until searching is completed) by entering | |
529 | ;; a recursive-edit and exiting it when done isearching. | |
130bf67c RS |
530 | (if recursive-edit |
531 | (let ((isearch-recursive-edit t)) | |
532 | (recursive-edit))) | |
8e1cae6d JB |
533 | ) |
534 | ||
535 | ||
536 | ;;;==================================================== | |
537 | ;; Some high level utilities. Others below. | |
538 | ||
539 | (defun isearch-update () | |
540 | ;; Called after each command to update the display. | |
a5dcf63f | 541 | (if (if isearch-event-data-type |
08200510 | 542 | (null unread-command-event) |
1a3a6707 | 543 | (if isearch-gnu-emacs-events |
dbc4e1c1 | 544 | (null unread-command-events) |
08200510 | 545 | (< unread-command-char 0))) |
8e1cae6d JB |
546 | (progn |
547 | (if (not (input-pending-p)) | |
548 | (isearch-message)) | |
549 | (if (and isearch-slow-terminal-mode | |
550 | (not (or isearch-small-window | |
551 | (pos-visible-in-window-p)))) | |
08200510 | 552 | (let ((found-point (point))) |
8e1cae6d | 553 | (setq isearch-small-window t) |
8e1cae6d JB |
554 | (move-to-window-line 0) |
555 | (let ((window-min-height 1)) | |
556 | (split-window nil (if (< search-slow-window-lines 0) | |
557 | (1+ (- search-slow-window-lines)) | |
558 | (- (window-height) | |
559 | (1+ search-slow-window-lines))))) | |
560 | (if (< search-slow-window-lines 0) | |
561 | (progn (vertical-motion (- 1 search-slow-window-lines)) | |
562 | (set-window-start (next-window) (point)) | |
563 | (set-window-hscroll (next-window) | |
564 | (window-hscroll)) | |
565 | (set-window-hscroll (selected-window) 0)) | |
566 | (other-window 1)) | |
08200510 RS |
567 | (goto-char found-point))) |
568 | (if isearch-other-end | |
569 | (if (< isearch-other-end (point)) ; isearch-forward? | |
570 | (isearch-highlight isearch-other-end (point)) | |
99afb671 RS |
571 | (isearch-highlight (point) isearch-other-end)) |
572 | (isearch-dehighlight nil)) | |
08200510 | 573 | )) |
8e1cae6d JB |
574 | (setq ;; quit-flag nil not for isearch-mode |
575 | isearch-adjusted nil | |
576 | isearch-yank-flag nil) | |
577 | ) | |
578 | ||
579 | ||
35a4d143 | 580 | (defun isearch-done (&optional nopush) |
8e1cae6d | 581 | ;; Called by all commands that terminate isearch-mode. |
35a4d143 | 582 | ;; If NOPUSH is non-nil, we don't push the string on the search ring. |
849cfd72 | 583 | (setq overriding-local-map nil) |
08200510 RS |
584 | ;; (setq pre-command-hook isearch-old-pre-command-hook) ; for lemacs |
585 | (isearch-dehighlight t) | |
586 | (let ((found-start (window-start (selected-window))) | |
587 | (found-point (point))) | |
70418205 RS |
588 | (if isearch-window-configuration |
589 | (set-window-configuration isearch-window-configuration)) | |
08200510 | 590 | |
d49b6338 RS |
591 | (if isearch-small-window |
592 | (goto-char found-point) | |
593 | ;; Exiting the save-window-excursion clobbers window-start; restore it. | |
594 | (set-window-start (selected-window) found-start t))) | |
595 | ||
08200510 RS |
596 | ;; If there was movement, mark the starting position. |
597 | ;; Maybe should test difference between and set mark iff > threshold. | |
598 | (if (/= (point) isearch-opoint) | |
7872ee4d RS |
599 | (progn |
600 | (push-mark isearch-opoint t) | |
67cbb73f | 601 | (deactivate-mark) |
7872ee4d RS |
602 | (or executing-macro (> (minibuffer-depth) 0) |
603 | (message "Mark saved where search started"))) | |
08200510 RS |
604 | ;; (message "") why is this needed? |
605 | ) | |
08200510 RS |
606 | |
607 | (setq isearch-mode nil) | |
608 | (set-buffer-modified-p (buffer-modified-p)) ;; update modeline | |
8e1cae6d | 609 | |
35a4d143 | 610 | (if (and (> (length isearch-string) 0) (not nopush)) |
8e1cae6d JB |
611 | ;; Update the ring data. |
612 | (if isearch-regexp | |
a8f783b2 RS |
613 | (if (or (null regexp-search-ring) |
614 | (not (string= isearch-string (car regexp-search-ring)))) | |
8e1cae6d | 615 | (progn |
08200510 | 616 | (setq regexp-search-ring |
a5dcf63f | 617 | (cons isearch-string regexp-search-ring)) |
08200510 RS |
618 | (if (> (length regexp-search-ring) regexp-search-ring-max) |
619 | (setcdr (nthcdr (1- search-ring-max) regexp-search-ring) | |
8e1cae6d | 620 | nil)))) |
a8f783b2 RS |
621 | (if (or (null search-ring) |
622 | (not (string= isearch-string (car search-ring)))) | |
8e1cae6d | 623 | (progn |
a5dcf63f | 624 | (setq search-ring (cons isearch-string search-ring)) |
8e1cae6d JB |
625 | (if (> (length search-ring) search-ring-max) |
626 | (setcdr (nthcdr (1- search-ring-max) search-ring) nil)))))) | |
627 | ||
8e1cae6d | 628 | (run-hooks 'isearch-mode-end-hook) |
08200510 RS |
629 | (if isearch-recursive-edit (exit-recursive-edit))) |
630 | ||
631 | ;;;======================================================= | |
632 | ;;; Switching buffers should first terminate isearch-mode. | |
eb8c3be9 | 633 | ;;; This is done quite differently for each variant of emacs. |
08200510 RS |
634 | ;;; For lemacs, see Exiting in lemacs below |
635 | ||
636 | ;; For Emacs 19, the frame switch event is handled. | |
637 | (defun isearch-switch-frame-handler () | |
638 | (interactive) ;; Is this necessary? | |
639 | ;; First terminate isearch-mode. | |
640 | (isearch-done) | |
dba1ec55 | 641 | (handle-switch-frame (car (cdr (isearch-last-command-char))))) |
08200510 RS |
642 | |
643 | ;;;======================================================== | |
8e1cae6d JB |
644 | |
645 | \f | |
646 | ;;;==================================================== | |
647 | ;; Commands active while inside of the isearch minor mode. | |
648 | ||
649 | (defun isearch-exit () | |
650 | "Exit search normally. | |
651 | However, if this is the first command after starting incremental | |
652 | search and `search-nonincremental-instead' is non-nil, do a | |
08200510 | 653 | nonincremental search instead via `isearch-edit-string'." |
8e1cae6d JB |
654 | (interactive) |
655 | (if (and search-nonincremental-instead | |
656 | (= 0 (length isearch-string))) | |
08200510 RS |
657 | (let ((isearch-nonincremental t)) |
658 | (isearch-edit-string))) | |
8e1cae6d JB |
659 | (isearch-done)) |
660 | ||
661 | ||
662 | (defun isearch-edit-string () | |
08200510 RS |
663 | "Edit the search string in the minibuffer. |
664 | The following additional command keys are active while editing. | |
665 | \\<minibuffer-local-isearch-map> | |
666 | \\[exit-minibuffer] to resume incremental searching with the edited string. | |
667 | \\[isearch-nonincremental-exit-minibuffer] to do one nonincremental search. | |
668 | \\[isearch-forward-exit-minibuffer] to resume isearching forward. | |
669 | \\[isearch-backward-exit-minibuffer] to resume isearching backward. | |
670 | \\[isearch-ring-advance-edit] to replace the search string with the next item in the search ring. | |
eb8c3be9 | 671 | \\[isearch-ring-retreat-edit] to replace the search string with the previous item in the search ring. |
08200510 RS |
672 | \\[isearch-complete-edit] to complete the search string using the search ring. |
673 | ||
674 | If first char entered is \\[isearch-yank-word], then do word search instead." | |
675 | ||
676 | ;; This code is very hairy for several reasons, explained in the code. | |
677 | ;; Mainly, isearch-mode must be terminated while editing and then restarted. | |
678 | ;; If there were a way to catch any change of buffer from the minibuffer, | |
679 | ;; this could be simplified greatly. | |
eb8c3be9 | 680 | ;; Editing doesn't back up the search point. Should it? |
8e1cae6d | 681 | (interactive) |
08200510 | 682 | (condition-case err |
a9a5a9fa | 683 | (let ((isearch-nonincremental isearch-nonincremental) |
08200510 RS |
684 | |
685 | ;; Locally bind all isearch global variables to protect them | |
686 | ;; from recursive isearching. | |
687 | ;; isearch-string -message and -forward are not bound | |
688 | ;; so they may be changed. Instead, save the values. | |
689 | (isearch-new-string isearch-string) | |
690 | (isearch-new-message isearch-message) | |
691 | (isearch-new-forward isearch-forward) | |
692 | (isearch-new-word isearch-word) | |
693 | ||
694 | (isearch-regexp isearch-regexp) | |
695 | (isearch-op-fun isearch-op-fun) | |
696 | (isearch-cmds isearch-cmds) | |
697 | (isearch-success isearch-success) | |
698 | (isearch-wrapped isearch-wrapped) | |
699 | (isearch-barrier isearch-barrier) | |
700 | (isearch-adjusted isearch-adjusted) | |
701 | (isearch-yank-flag isearch-yank-flag) | |
702 | (isearch-invalid-regexp isearch-invalid-regexp) | |
c5f6b356 | 703 | (isearch-within-brackets isearch-within-brackets) |
08200510 RS |
704 | (isearch-other-end isearch-other-end) |
705 | (isearch-opoint isearch-opoint) | |
706 | (isearch-slow-terminal-mode isearch-slow-terminal-mode) | |
707 | (isearch-small-window isearch-small-window) | |
708 | (isearch-recursive-edit isearch-recursive-edit) | |
709 | ;; Save current configuration so we can restore it here. | |
710 | (isearch-window-configuration (current-window-configuration)) | |
711 | ) | |
712 | ||
713 | ;; Actually terminate isearching until editing is done. | |
714 | ;; This is so that the user can do anything without failure, | |
715 | ;; like switch buffers and start another isearch, and return. | |
716 | (condition-case err | |
35a4d143 | 717 | (isearch-done t) |
08200510 RS |
718 | (exit nil)) ; was recursive editing |
719 | ||
720 | (isearch-message) ;; for read-char | |
721 | (unwind-protect | |
722 | (let* (;; Why does following read-char echo? | |
723 | ;;(echo-keystrokes 0) ;; not needed with above message | |
d94307ee | 724 | (e (let ((cursor-in-echo-area t)) |
235beb32 | 725 | (read-event))) |
08200510 RS |
726 | ;; Binding minibuffer-history-symbol to nil is a work-around |
727 | ;; for some incompatibility with gmhist. | |
728 | (minibuffer-history-symbol)) | |
729 | ;; If the first character the user types when we prompt them | |
730 | ;; for a string is the yank-word character, then go into | |
731 | ;; word-search mode. Otherwise unread that character and | |
732 | ;; read a key the normal way. | |
733 | ;; Word search does not apply (yet) to regexp searches, | |
734 | ;; no check is made here. | |
735 | (message (isearch-message-prefix nil nil t)) | |
736 | (if (eq 'isearch-yank-word | |
235beb32 | 737 | (lookup-key isearch-mode-map (vector e))) |
08200510 RS |
738 | (setq isearch-word t ;; so message-prefix is right |
739 | isearch-new-word t) | |
740 | (isearch-unread e)) | |
a5dcf63f RS |
741 | (setq cursor-in-echo-area nil) |
742 | (setq isearch-new-string | |
35a4d143 | 743 | (let (junk-ring) |
a5dcf63f RS |
744 | (read-from-minibuffer (isearch-message-prefix) |
745 | isearch-string | |
746 | minibuffer-local-isearch-map nil | |
35a4d143 | 747 | 'junk-ring)) |
08200510 RS |
748 | isearch-new-message (mapconcat 'text-char-description |
749 | isearch-new-string ""))) | |
750 | ;; Always resume isearching by restarting it. | |
751 | (isearch-mode isearch-forward | |
752 | isearch-regexp | |
753 | isearch-op-fun | |
754 | isearch-recursive-edit | |
755 | isearch-word) | |
756 | ||
757 | ;; Copy new local values to isearch globals | |
758 | (setq isearch-string isearch-new-string | |
759 | isearch-message isearch-new-message | |
760 | isearch-forward isearch-new-forward | |
761 | isearch-word isearch-new-word)) | |
762 | ||
763 | ;; Empty isearch-string means use default. | |
764 | (if (= 0 (length isearch-string)) | |
a8f783b2 RS |
765 | (setq isearch-string (car (if isearch-regexp regexp-search-ring |
766 | search-ring))) | |
767 | ;; This used to set the last search string, | |
768 | ;; but I think it is not right to do that here. | |
769 | ;; Only the string actually used should be saved. | |
770 | ) | |
08200510 RS |
771 | |
772 | ;; Reinvoke the pending search. | |
773 | (isearch-push-state) | |
774 | (isearch-search) | |
775 | (isearch-update) | |
776 | (if isearch-nonincremental | |
777 | (progn | |
778 | ;; (sit-for 1) ;; needed if isearch-done does: (message "") | |
779 | (isearch-done)))) | |
8e1cae6d | 780 | |
08200510 RS |
781 | (quit ; handle abort-recursive-edit |
782 | (isearch-abort) ;; outside of let to restore outside global values | |
783 | ))) | |
784 | ||
785 | (defun isearch-nonincremental-exit-minibuffer () | |
786 | (interactive) | |
787 | (setq isearch-nonincremental t) | |
788 | (exit-minibuffer)) | |
789 | ||
790 | (defun isearch-forward-exit-minibuffer () | |
791 | (interactive) | |
792 | (setq isearch-new-forward t) | |
793 | (exit-minibuffer)) | |
8e1cae6d | 794 | |
08200510 | 795 | (defun isearch-reverse-exit-minibuffer () |
8e1cae6d | 796 | (interactive) |
08200510 RS |
797 | (setq isearch-new-forward nil) |
798 | (exit-minibuffer)) | |
799 | ||
800 | ||
801 | (defun isearch-abort () | |
802 | "Abort incremental search mode if searching is successful, signalling quit. | |
803 | Otherwise, revert to previous successful search and continue searching. | |
804 | Use `isearch-exit' to quit without signalling." | |
805 | (interactive) | |
eb8c3be9 | 806 | ;; (ding) signal instead below, if quitting |
8e1cae6d JB |
807 | (discard-input) |
808 | (if isearch-success | |
809 | ;; If search is successful, move back to starting point | |
810 | ;; and really do quit. | |
811 | (progn (goto-char isearch-opoint) | |
35a4d143 | 812 | (isearch-done t) ; exit isearch |
a5dcf63f | 813 | (signal 'quit nil)) ; and pass on quit signal |
08200510 | 814 | ;; If search is failing, rub out until it is once more successful. |
8e1cae6d JB |
815 | (while (not isearch-success) (isearch-pop-state)) |
816 | (isearch-update))) | |
817 | ||
818 | ||
819 | (defun isearch-repeat (direction) | |
820 | ;; Utility for isearch-repeat-forward and -backward. | |
821 | (if (eq isearch-forward (eq direction 'forward)) | |
822 | ;; C-s in forward or C-r in reverse. | |
823 | (if (equal isearch-string "") | |
824 | ;; If search string is empty, use last one. | |
825 | (setq isearch-string | |
8e1cae6d | 826 | (or (if isearch-regexp |
a5dcf63f RS |
827 | (car regexp-search-ring) |
828 | (car search-ring)) | |
8e1cae6d JB |
829 | "") |
830 | isearch-message | |
08200510 | 831 | (mapconcat 'isearch-text-char-description |
8e1cae6d JB |
832 | isearch-string "")) |
833 | ;; If already have what to search for, repeat it. | |
834 | (or isearch-success | |
835 | (progn | |
836 | ||
837 | (goto-char (if isearch-forward (point-min) (point-max))) | |
838 | (setq isearch-wrapped t)))) | |
839 | ;; C-s in reverse or C-r in forward, change direction. | |
840 | (setq isearch-forward (not isearch-forward))) | |
841 | ||
842 | (setq isearch-barrier (point)) ; For subsequent \| if regexp. | |
6fefdc4b RS |
843 | |
844 | (if (equal isearch-string "") | |
845 | (setq isearch-success t) | |
846 | (if (and isearch-success (equal (match-end 0) (match-beginning 0))) | |
8e1cae6d JB |
847 | ;; If repeating a search that found |
848 | ;; an empty string, ensure we advance. | |
6fefdc4b RS |
849 | (if (if isearch-forward (eobp) (bobp)) |
850 | ;; If there's nowhere to advance to, fail (and wrap next time). | |
851 | (progn | |
852 | (setq isearch-success nil) | |
853 | (ding)) | |
854 | (forward-char (if isearch-forward 1 -1)) | |
855 | (isearch-search)) | |
856 | (isearch-search))) | |
857 | ||
8e1cae6d JB |
858 | (isearch-push-state) |
859 | (isearch-update)) | |
860 | ||
861 | (defun isearch-repeat-forward () | |
862 | "Repeat incremental search forwards." | |
863 | (interactive) | |
864 | (isearch-repeat 'forward)) | |
865 | ||
866 | (defun isearch-repeat-backward () | |
867 | "Repeat incremental search backwards." | |
868 | (interactive) | |
869 | (isearch-repeat 'backward)) | |
870 | ||
871 | (defun isearch-toggle-regexp () | |
872 | "Toggle regexp searching on or off." | |
873 | ;; The status stack is left unchanged. | |
874 | (interactive) | |
875 | (setq isearch-regexp (not isearch-regexp)) | |
08200510 | 876 | (if isearch-regexp (setq isearch-word nil)) |
8e1cae6d JB |
877 | (isearch-update)) |
878 | ||
879 | (defun isearch-delete-char () | |
880 | "Discard last input item and move point back. | |
881 | If no previous match was done, just beep." | |
882 | (interactive) | |
883 | (if (null (cdr isearch-cmds)) | |
884 | (ding) | |
885 | (isearch-pop-state)) | |
886 | (isearch-update)) | |
887 | ||
888 | ||
889 | (defun isearch-yank (chunk) | |
890 | ;; Helper for isearch-yank-word and isearch-yank-line | |
30d47262 RS |
891 | ;; CHUNK should be word, line or kill. |
892 | (let ((string (cond | |
893 | ((eq chunk 'kill) | |
894 | (current-kill 0)) | |
895 | (t | |
896 | (save-excursion | |
897 | (and (not isearch-forward) isearch-other-end | |
898 | (goto-char isearch-other-end)) | |
899 | (buffer-substring | |
900 | (point) | |
901 | (save-excursion | |
902 | (cond | |
903 | ((eq chunk 'word) | |
904 | (forward-word 1)) | |
905 | ((eq chunk 'line) | |
906 | (end-of-line))) | |
907 | (point)))))))) | |
08200510 RS |
908 | ;; Downcase the string if not supposed to case-fold yanked strings. |
909 | (if (and isearch-case-fold-search | |
fdf5afa4 | 910 | (eq 'not-yanks search-upper-case)) |
08200510 RS |
911 | (setq string (downcase string))) |
912 | (if isearch-regexp (setq string (regexp-quote string))) | |
913 | (setq isearch-string (concat isearch-string string) | |
8e1cae6d JB |
914 | isearch-message |
915 | (concat isearch-message | |
08200510 RS |
916 | (mapconcat 'isearch-text-char-description |
917 | string "")) | |
8e1cae6d JB |
918 | ;; Don't move cursor in reverse search. |
919 | isearch-yank-flag t)) | |
920 | (isearch-search-and-update)) | |
921 | ||
30d47262 RS |
922 | (defun isearch-yank-kill () |
923 | "Pull string from kill ring into search string." | |
924 | (interactive) | |
925 | (isearch-yank 'kill)) | |
8e1cae6d JB |
926 | |
927 | (defun isearch-yank-word () | |
928 | "Pull next word from buffer into search string." | |
929 | (interactive) | |
930 | (isearch-yank 'word)) | |
931 | ||
932 | (defun isearch-yank-line () | |
933 | "Pull rest of line from buffer into search string." | |
934 | (interactive) | |
935 | (isearch-yank 'line)) | |
936 | ||
937 | ||
938 | (defun isearch-search-and-update () | |
939 | ;; Do the search and update the display. | |
940 | (if (and (not isearch-success) | |
941 | ;; unsuccessful regexp search may become | |
942 | ;; successful by addition of characters which | |
943 | ;; make isearch-string valid | |
944 | (not isearch-regexp)) | |
945 | nil | |
946 | ;; In reverse search, adding stuff at | |
947 | ;; the end may cause zero or many more chars to be | |
948 | ;; matched, in the string following point. | |
949 | ;; Allow all those possibilities without moving point as | |
950 | ;; long as the match does not extend past search origin. | |
951 | (if (and (not isearch-forward) (not isearch-adjusted) | |
952 | (condition-case () | |
953 | (looking-at (if isearch-regexp isearch-string | |
954 | (regexp-quote isearch-string))) | |
955 | (error nil)) | |
956 | (or isearch-yank-flag | |
957 | (<= (match-end 0) | |
958 | (min isearch-opoint isearch-barrier)))) | |
959 | (setq isearch-success t | |
960 | isearch-invalid-regexp nil | |
c5f6b356 | 961 | isearch-within-brackets nil |
8e1cae6d JB |
962 | isearch-other-end (match-end 0)) |
963 | ;; Not regexp, not reverse, or no match at point. | |
964 | (if (and isearch-other-end (not isearch-adjusted)) | |
965 | (goto-char (if isearch-forward isearch-other-end | |
966 | (min isearch-opoint | |
967 | isearch-barrier | |
968 | (1+ isearch-other-end))))) | |
969 | (isearch-search) | |
970 | )) | |
971 | (isearch-push-state) | |
972 | (if isearch-op-fun (funcall isearch-op-fun)) | |
973 | (isearch-update)) | |
974 | ||
975 | ||
976 | ;; *, ?, and | chars can make a regexp more liberal. | |
08200510 | 977 | ;; They can make a regexp match sooner or make it succeed instead of failing. |
8e1cae6d JB |
978 | ;; So go back to place last successful search started |
979 | ;; or to the last ^S/^R (barrier), whichever is nearer. | |
08200510 | 980 | ;; + needs no special handling because the string must match at least once. |
8e1cae6d JB |
981 | |
982 | (defun isearch-*-char () | |
983 | "Handle * and ? specially in regexps." | |
984 | (interactive) | |
985 | (if isearch-regexp | |
986 | ||
987 | (progn | |
988 | (setq isearch-adjusted t) | |
989 | (let ((cs (nth (if isearch-forward | |
990 | 5 ; isearch-other-end | |
991 | 2) ; saved (point) | |
992 | (car (cdr isearch-cmds))))) | |
993 | ;; (car isearch-cmds) is after last search; | |
994 | ;; (car (cdr isearch-cmds)) is from before it. | |
995 | (setq cs (or cs isearch-barrier)) | |
996 | (goto-char | |
997 | (if isearch-forward | |
998 | (max cs isearch-barrier) | |
999 | (min cs isearch-barrier)))))) | |
08200510 | 1000 | (isearch-process-search-char (isearch-last-command-char))) |
8e1cae6d JB |
1001 | |
1002 | ||
8e1cae6d JB |
1003 | (defun isearch-|-char () |
1004 | "If in regexp search, jump to the barrier." | |
1005 | (interactive) | |
1006 | (if isearch-regexp | |
1007 | (progn | |
1008 | (setq isearch-adjusted t) | |
1009 | (goto-char isearch-barrier))) | |
08200510 | 1010 | (isearch-process-search-char (isearch-last-command-char))) |
8e1cae6d JB |
1011 | |
1012 | ||
b457cc3b | 1013 | (defalias 'isearch-other-control-char 'isearch-other-meta-char) |
8e1cae6d JB |
1014 | |
1015 | (defun isearch-other-meta-char () | |
8f90f594 | 1016 | "Exit the search normally and reread this key sequence. |
35a4d143 RS |
1017 | But only if `search-exit-option' is non-nil, the default. |
1018 | If it is the symbol `edit', the search string is edited in the minibuffer | |
1019 | and the meta character is unread so that it applies to editing the string." | |
8e1cae6d | 1020 | (interactive) |
35a4d143 RS |
1021 | (cond ((eq search-exit-option 'edit) |
1022 | (let ((key (this-command-keys))) | |
e7cb0106 | 1023 | (apply 'isearch-unread (listify-key-sequence key))) |
35a4d143 RS |
1024 | (isearch-edit-string)) |
1025 | (search-exit-option | |
70418205 | 1026 | (let ((key (this-command-keys)) |
285eb5ef | 1027 | (index 0) |
70418205 RS |
1028 | window) |
1029 | (apply 'isearch-unread (listify-key-sequence key)) | |
285eb5ef RS |
1030 | ;; Properly handle scroll-bar and mode-line clicks |
1031 | ;; for which a dummy prefix event was generated as (aref key 0). | |
1032 | (and (> (length key) 1) | |
1033 | (symbolp (aref key 0)) | |
1034 | (listp (aref key 1)) | |
4b43d418 RS |
1035 | ;; These events now have a symbol; they used to have a list. |
1036 | ;; Accept either one. Other events have a number here. | |
1037 | (not (numberp (posn-point (event-start (aref key 1))))) | |
285eb5ef | 1038 | (setq index 1)) |
70418205 RS |
1039 | ;; If we got a mouse click, maybe it was read with the buffer |
1040 | ;; it was clicked on. If so, that buffer, not the current one, | |
1041 | ;; is in isearch mode. So end the search in that buffer. | |
285eb5ef RS |
1042 | (if (and (listp (aref key index)) |
1043 | (setq window (posn-window (event-start (aref key index)))) | |
70418205 RS |
1044 | (windowp window)) |
1045 | (save-excursion | |
1046 | (set-buffer (window-buffer window)) | |
1047 | (isearch-done)) | |
1048 | (isearch-done)))) | |
35a4d143 RS |
1049 | (t;; otherwise nil |
1050 | (isearch-process-search-string (this-command-keys) | |
1051 | (this-command-keys))))) | |
8e1cae6d | 1052 | |
8e1cae6d JB |
1053 | (defun isearch-quote-char () |
1054 | "Quote special characters for incremental search." | |
1055 | (interactive) | |
1056 | (isearch-process-search-char (read-quoted-char (isearch-message t)))) | |
1057 | ||
8e1cae6d JB |
1058 | (defun isearch-return-char () |
1059 | "Convert return into newline for incremental search. | |
1060 | Obsolete." | |
1061 | (interactive) | |
1062 | (isearch-process-search-char ?\n)) | |
1063 | ||
8e1cae6d | 1064 | (defun isearch-printing-char () |
b68c164d | 1065 | "Add this ordinary printing character to the search string and search." |
8e1cae6d | 1066 | (interactive) |
08200510 | 1067 | (isearch-process-search-char (isearch-last-command-char))) |
8e1cae6d JB |
1068 | |
1069 | (defun isearch-whitespace-chars () | |
08200510 | 1070 | "Match all whitespace chars, if in regexp mode. |
b68c164d | 1071 | If you want to search for just a space, type C-q SPC." |
8e1cae6d | 1072 | (interactive) |
08200510 | 1073 | (if isearch-regexp |
c5f6b356 | 1074 | (if (and search-whitespace-regexp (not isearch-within-brackets)) |
08200510 RS |
1075 | (isearch-process-search-string search-whitespace-regexp " ") |
1076 | (isearch-printing-char)) | |
1077 | (progn | |
eb8c3be9 | 1078 | ;; This way of doing word search doesn't correctly extend current search. |
08200510 RS |
1079 | ;; (setq isearch-word t) |
1080 | ;; (setq isearch-adjusted t) | |
1081 | ;; (goto-char isearch-barrier) | |
1082 | (isearch-printing-char)))) | |
8e1cae6d JB |
1083 | |
1084 | (defun isearch-process-search-char (char) | |
1085 | ;; Append the char to the search string, update the message and re-search. | |
08200510 RS |
1086 | (isearch-process-search-string |
1087 | (isearch-char-to-string char) | |
1088 | (isearch-text-char-description char))) | |
8e1cae6d JB |
1089 | |
1090 | (defun isearch-process-search-string (string message) | |
1091 | (setq isearch-string (concat isearch-string string) | |
1092 | isearch-message (concat isearch-message message)) | |
1093 | (isearch-search-and-update)) | |
1094 | ||
1095 | \f | |
1096 | ;;=========================================================== | |
1097 | ;; Search Ring | |
1098 | ||
08200510 RS |
1099 | (defun isearch-ring-adjust1 (advance) |
1100 | ;; Helper for isearch-ring-adjust | |
1101 | (let* ((ring (if isearch-regexp regexp-search-ring search-ring)) | |
8e1cae6d JB |
1102 | (length (length ring)) |
1103 | (yank-pointer-name (if isearch-regexp | |
08200510 | 1104 | 'regexp-search-ring-yank-pointer |
8e1cae6d JB |
1105 | 'search-ring-yank-pointer)) |
1106 | (yank-pointer (eval yank-pointer-name))) | |
1107 | (if (zerop length) | |
1108 | () | |
1109 | (set yank-pointer-name | |
1110 | (setq yank-pointer | |
ffbc30b2 PE |
1111 | (mod (+ (or yank-pointer 0) |
1112 | (if advance -1 1)) | |
1113 | length))) | |
a5dcf63f | 1114 | (setq isearch-string (nth yank-pointer ring) |
08200510 RS |
1115 | isearch-message (mapconcat 'isearch-text-char-description |
1116 | isearch-string ""))))) | |
1117 | ||
1118 | (defun isearch-ring-adjust (advance) | |
1119 | ;; Helper for isearch-ring-advance and isearch-ring-retreat | |
1120 | (if (cdr isearch-cmds) ;; is there more than one thing on stack? | |
1121 | (isearch-pop-state)) | |
1122 | (isearch-ring-adjust1 advance) | |
8e1cae6d | 1123 | (isearch-push-state) |
08200510 RS |
1124 | (if search-ring-update |
1125 | (progn | |
1126 | (isearch-search) | |
1127 | (isearch-update)) | |
1128 | (isearch-edit-string) | |
1129 | )) | |
8e1cae6d JB |
1130 | |
1131 | (defun isearch-ring-advance () | |
1132 | "Advance to the next search string in the ring." | |
08200510 | 1133 | ;; This could be more general to handle a prefix arg, but who would use it. |
8e1cae6d JB |
1134 | (interactive) |
1135 | (isearch-ring-adjust 'advance)) | |
1136 | ||
1137 | (defun isearch-ring-retreat () | |
1138 | "Retreat to the previous search string in the ring." | |
1139 | (interactive) | |
1140 | (isearch-ring-adjust nil)) | |
1141 | ||
a5dcf63f RS |
1142 | (defun isearch-ring-advance-edit (n) |
1143 | "Insert the next element of the search history into the minibuffer." | |
1144 | (interactive "p") | |
1145 | (let* ((yank-pointer-name (if isearch-regexp | |
1146 | 'regexp-search-ring-yank-pointer | |
1147 | 'search-ring-yank-pointer)) | |
1148 | (yank-pointer (eval yank-pointer-name)) | |
1149 | (ring (if isearch-regexp regexp-search-ring search-ring)) | |
1150 | (length (length ring))) | |
1151 | (if (zerop length) | |
1152 | () | |
1153 | (set yank-pointer-name | |
1154 | (setq yank-pointer | |
ffbc30b2 PE |
1155 | (mod (- (or yank-pointer 0) n) |
1156 | length))) | |
a5dcf63f | 1157 | |
a5dcf63f | 1158 | (erase-buffer) |
35a4d143 | 1159 | (insert (nth yank-pointer ring)) |
49c13105 | 1160 | (goto-char (point-max))))) |
a5dcf63f RS |
1161 | |
1162 | (defun isearch-ring-retreat-edit (n) | |
1163 | "Inserts the previous element of the search history into the minibuffer." | |
1164 | (interactive "p") | |
1165 | (isearch-ring-advance-edit (- n))) | |
1166 | ||
1167 | ;;(defun isearch-ring-adjust-edit (advance) | |
1168 | ;; "Use the next or previous search string in the ring while in minibuffer." | |
1169 | ;; (isearch-ring-adjust1 advance) | |
1170 | ;; (erase-buffer) | |
1171 | ;; (insert isearch-string)) | |
1172 | ||
1173 | ;;(defun isearch-ring-advance-edit () | |
1174 | ;; (interactive) | |
1175 | ;; (isearch-ring-adjust-edit 'advance)) | |
1176 | ||
1177 | ;;(defun isearch-ring-retreat-edit () | |
1178 | ;; "Retreat to the previous search string in the ring while in the minibuffer." | |
1179 | ;; (interactive) | |
1180 | ;; (isearch-ring-adjust-edit nil)) | |
08200510 RS |
1181 | |
1182 | ||
1183 | (defun isearch-complete1 () | |
1184 | ;; Helper for isearch-complete and isearch-complete-edit | |
1185 | ;; Return t if completion OK, nil if no completion exists. | |
1186 | (let* ((ring (if isearch-regexp regexp-search-ring search-ring)) | |
1187 | (alist (mapcar (function (lambda (string) (list string))) ring)) | |
1188 | (completion-ignore-case case-fold-search) | |
1189 | (completion (try-completion isearch-string alist))) | |
1190 | (cond | |
1191 | ((eq completion t) | |
1192 | ;; isearch-string stays the same | |
1193 | t) | |
1194 | ((or completion ; not nil, must be a string | |
1195 | (= 0 (length isearch-string))) ; shouldnt have to say this | |
1196 | (if (equal completion isearch-string) ;; no extension? | |
1197 | (if completion-auto-help | |
1198 | (with-output-to-temp-buffer "*Isearch completions*" | |
1199 | (display-completion-list | |
1200 | (all-completions isearch-string alist)))) | |
1201 | (setq isearch-string completion)) | |
1202 | t) | |
1203 | (t | |
1204 | (message "No completion") ; waits a second if in minibuffer | |
1205 | nil)))) | |
1206 | ||
1207 | (defun isearch-complete () | |
1208 | "Complete the search string from the strings on the search ring. | |
1209 | The completed string is then editable in the minibuffer. | |
1210 | If there is no completion possible, say so and continue searching." | |
1211 | (interactive) | |
1212 | (if (isearch-complete1) | |
1213 | (isearch-edit-string) | |
1214 | ;; else | |
1215 | (sit-for 1) | |
1216 | (isearch-update))) | |
8e1cae6d | 1217 | |
08200510 RS |
1218 | (defun isearch-complete-edit () |
1219 | "Same as `isearch-complete' except in the minibuffer." | |
1220 | (interactive) | |
1221 | (setq isearch-string (buffer-string)) | |
1222 | (if (isearch-complete1) | |
8e1cae6d | 1223 | (progn |
08200510 RS |
1224 | (erase-buffer) |
1225 | (insert isearch-string)))) | |
8e1cae6d JB |
1226 | |
1227 | \f | |
1228 | ;;;============================================================== | |
1229 | ;; The search status stack (and isearch window-local variables, not used). | |
08200510 | 1230 | ;; Need a structure for this. |
8e1cae6d JB |
1231 | |
1232 | (defun isearch-top-state () | |
8e1cae6d JB |
1233 | (let ((cmd (car isearch-cmds))) |
1234 | (setq isearch-string (car cmd) | |
1235 | isearch-message (car (cdr cmd)) | |
1236 | isearch-success (nth 3 cmd) | |
1237 | isearch-forward (nth 4 cmd) | |
1238 | isearch-other-end (nth 5 cmd) | |
08200510 RS |
1239 | isearch-word (nth 6 cmd) |
1240 | isearch-invalid-regexp (nth 7 cmd) | |
1241 | isearch-wrapped (nth 8 cmd) | |
c5f6b356 RS |
1242 | isearch-barrier (nth 9 cmd) |
1243 | isearch-within-brackets (nth 10 cmd)) | |
8e1cae6d JB |
1244 | (goto-char (car (cdr (cdr cmd)))))) |
1245 | ||
1246 | (defun isearch-pop-state () | |
8e1cae6d JB |
1247 | (setq isearch-cmds (cdr isearch-cmds)) |
1248 | (isearch-top-state) | |
1249 | ) | |
1250 | ||
1251 | (defun isearch-push-state () | |
1252 | (setq isearch-cmds | |
1253 | (cons (list isearch-string isearch-message (point) | |
1254 | isearch-success isearch-forward isearch-other-end | |
08200510 | 1255 | isearch-word |
c5f6b356 RS |
1256 | isearch-invalid-regexp isearch-wrapped isearch-barrier |
1257 | isearch-within-brackets) | |
8e1cae6d JB |
1258 | isearch-cmds))) |
1259 | ||
8e1cae6d JB |
1260 | \f |
1261 | ;;;================================================================== | |
1262 | ;; Message string | |
1263 | ||
1264 | (defun isearch-message (&optional c-q-hack ellipsis) | |
1265 | ;; Generate and print the message string. | |
1266 | (let ((cursor-in-echo-area ellipsis) | |
1267 | (m (concat | |
08200510 | 1268 | (isearch-message-prefix c-q-hack ellipsis isearch-nonincremental) |
8e1cae6d JB |
1269 | isearch-message |
1270 | (isearch-message-suffix c-q-hack ellipsis) | |
1271 | ))) | |
1272 | (if c-q-hack m (message "%s" m)))) | |
1273 | ||
08200510 | 1274 | (defun isearch-message-prefix (&optional c-q-hack ellipsis nonincremental) |
8e1cae6d JB |
1275 | ;; If about to search, and previous search regexp was invalid, |
1276 | ;; check that it still is. If it is valid now, | |
1277 | ;; let the message we display while searching say that it is valid. | |
1278 | (and isearch-invalid-regexp ellipsis | |
1279 | (condition-case () | |
1280 | (progn (re-search-forward isearch-string (point) t) | |
1281 | (setq isearch-invalid-regexp nil)) | |
1282 | (error nil))) | |
1283 | ;; If currently failing, display no ellipsis. | |
1284 | (or isearch-success (setq ellipsis nil)) | |
1285 | (let ((m (concat (if isearch-success "" "failing ") | |
1286 | (if isearch-wrapped "wrapped ") | |
08200510 | 1287 | (if isearch-word "word " "") |
8e1cae6d | 1288 | (if isearch-regexp "regexp " "") |
08200510 | 1289 | (if nonincremental "search" "I-search") |
8e1cae6d JB |
1290 | (if isearch-forward ": " " backward: ") |
1291 | ))) | |
1292 | (aset m 0 (upcase (aref m 0))) | |
1293 | m)) | |
1294 | ||
1295 | ||
1296 | (defun isearch-message-suffix (&optional c-q-hack ellipsis) | |
1297 | (concat (if c-q-hack "^Q" "") | |
1298 | (if isearch-invalid-regexp | |
1299 | (concat " [" isearch-invalid-regexp "]") | |
1300 | ""))) | |
1301 | ||
1302 | \f | |
1303 | ;;;======================================================== | |
1304 | ;;; Searching | |
1305 | ||
1306 | (defun isearch-search () | |
1307 | ;; Do the search with the current search string. | |
1308 | (isearch-message nil t) | |
43873131 | 1309 | (if (and isearch-case-fold-search search-upper-case) |
b78559b0 RS |
1310 | (setq isearch-case-fold-search |
1311 | (isearch-no-upper-case-p isearch-string isearch-regexp))) | |
8e1cae6d JB |
1312 | (condition-case lossage |
1313 | (let ((inhibit-quit nil) | |
1314 | (case-fold-search isearch-case-fold-search)) | |
1315 | (if isearch-regexp (setq isearch-invalid-regexp nil)) | |
c5f6b356 | 1316 | (setq isearch-within-brackets nil) |
8e1cae6d JB |
1317 | (setq isearch-success |
1318 | (funcall | |
08200510 RS |
1319 | (cond (isearch-word |
1320 | (if isearch-forward | |
1321 | 'word-search-forward 'word-search-backward)) | |
1322 | (isearch-regexp | |
1323 | (if isearch-forward | |
1324 | 're-search-forward 're-search-backward)) | |
1325 | (t | |
1326 | (if isearch-forward 'search-forward 'search-backward))) | |
8e1cae6d JB |
1327 | isearch-string nil t)) |
1328 | (if isearch-success | |
1329 | (setq isearch-other-end | |
1330 | (if isearch-forward (match-beginning 0) (match-end 0))))) | |
1331 | ||
d32696d4 | 1332 | (quit (isearch-unread ?\C-g) |
8e1cae6d JB |
1333 | (setq isearch-success nil)) |
1334 | ||
1335 | (invalid-regexp | |
1336 | (setq isearch-invalid-regexp (car (cdr lossage))) | |
c5f6b356 RS |
1337 | (setq isearch-within-brackets (string-match "\\`Unmatched \\[" |
1338 | isearch-invalid-regexp)) | |
8e1cae6d JB |
1339 | (if (string-match |
1340 | "\\`Premature \\|\\`Unmatched \\|\\`Invalid " | |
1341 | isearch-invalid-regexp) | |
f1c03125 RS |
1342 | (setq isearch-invalid-regexp "incomplete input"))) |
1343 | (error | |
1344 | ;; stack overflow in regexp search. | |
1345 | (setq isearch-invalid-regexp (car (cdr lossage))))) | |
8e1cae6d JB |
1346 | |
1347 | (if isearch-success | |
1348 | nil | |
1349 | ;; Ding if failed this time after succeeding last time. | |
1350 | (and (nth 3 (car isearch-cmds)) | |
1351 | (ding)) | |
1352 | (goto-char (nth 2 (car isearch-cmds))))) | |
1353 | ||
08200510 RS |
1354 | |
1355 | \f | |
1356 | ;;;======================================================== | |
1357 | ;;; Highlighting | |
1358 | ||
b78559b0 | 1359 | (defvar isearch-overlay nil) |
08200510 | 1360 | |
b78559b0 | 1361 | (defun isearch-highlight (beg end) |
82318db5 | 1362 | (if (null search-highlight) |
08200510 | 1363 | nil |
b78559b0 RS |
1364 | (or isearch-overlay (setq isearch-overlay (make-overlay beg end))) |
1365 | (move-overlay isearch-overlay beg end (current-buffer)) | |
82318db5 RS |
1366 | (overlay-put isearch-overlay 'face |
1367 | (if (internal-find-face 'isearch nil) | |
1368 | 'isearch 'region)))) | |
b78559b0 RS |
1369 | |
1370 | (defun isearch-dehighlight (totally) | |
1371 | (if isearch-overlay | |
1372 | (delete-overlay isearch-overlay))) | |
08200510 RS |
1373 | |
1374 | ;;;=========================================================== | |
1375 | ;;; General utilities | |
1376 | ||
08200510 | 1377 | |
b78559b0 RS |
1378 | (defun isearch-no-upper-case-p (string regexp-flag) |
1379 | "Return t if there are no upper case chars in STRING. | |
1380 | If REGEXP-FLAG is non-nil, disregard letters preceeded by `\\' (but not `\\\\') | |
1381 | since they have special meaning in a regexp." | |
08200510 | 1382 | (let ((case-fold-search nil)) |
b78559b0 RS |
1383 | (not (string-match (if regexp-flag "\\(^\\|\\\\\\\\\\|[^\\]\\)[A-Z]" |
1384 | "[A-Z]") | |
1385 | string)))) | |
08200510 RS |
1386 | |
1387 | ||
8e1cae6d | 1388 | ;;;================================================= |
b78559b0 | 1389 | ;; Portability functions to support various Emacs versions. |
8e1cae6d | 1390 | |
08200510 RS |
1391 | ;; To quiet the byte-compiler. |
1392 | (defvar unread-command-event) | |
dbc4e1c1 | 1393 | (defvar unread-command-events) |
08200510 | 1394 | (defvar last-command-event) |
8e1cae6d | 1395 | |
08200510 RS |
1396 | (defun isearch-char-to-string (c) |
1397 | (if (integerp c) | |
1398 | (make-string 1 c) | |
8d7e4e80 RS |
1399 | (if (and (symbolp c) (get c 'ascii-character)) |
1400 | (make-string 1 (get c 'ascii-character)) | |
1401 | (make-string 1 (event-to-character c))))) | |
08200510 RS |
1402 | |
1403 | (defun isearch-text-char-description (c) | |
9d78ff8b RS |
1404 | (if (and (integerp c) (or (< c ?\ ) (= c ?\^?))) |
1405 | (text-char-description c) | |
1406 | (isearch-char-to-string c))) | |
08200510 | 1407 | |
8f90f594 | 1408 | (defun isearch-unread (&rest char-or-events) |
8f90f594 RS |
1409 | ;; General function to unread characters or events. |
1410 | (if isearch-gnu-emacs-events | |
e7cb0106 RS |
1411 | (setq unread-command-events |
1412 | (append char-or-events unread-command-events)) | |
8f90f594 | 1413 | (let ((char (if (cdr char-or-events) |
75e86b2e RS |
1414 | (progn |
1415 | (while (cdr char-or-events) | |
1416 | (setq char-or-events (cdr char-or-events))) | |
1417 | (+ 128 (car char-or-events))) | |
8f90f594 RS |
1418 | (car char-or-events)))) |
1419 | (if isearch-event-data-type | |
1420 | (setq unread-command-event char) | |
1421 | (setq unread-command-char char))))) | |
08200510 RS |
1422 | |
1423 | (defun isearch-last-command-char () | |
1424 | ;; General function to return the last command character. | |
a5dcf63f | 1425 | (if isearch-event-data-type |
08200510 RS |
1426 | last-command-event |
1427 | last-command-char)) | |
1428 | ||
3b1e4dd1 | 1429 | ;;; isearch.el ends here |