Commit | Line | Data |
---|---|---|
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 | ||
59243403 | 7 | ;; |$Date: 1994/01/21 04:19:19 $|$Revision: 1.64 $ |
8e1cae6d | 8 | |
54d2ecd3 | 9 | ;; This file is part of GNU Emacs. |
8e1cae6d | 10 | |
59243403 RS |
11 | ;; GNU Emacs is free software; you can redistribute it and/or modify |
12 | ;; it under the terms of the GNU General Public License as published by | |
13 | ;; the Free Software Foundation; either version 2, or (at your option) | |
14 | ;; any later version. | |
15 | ||
8e1cae6d | 16 | ;; GNU Emacs is distributed in the hope that it will be useful, |
59243403 RS |
17 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of |
18 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | ;; GNU General Public License for more details. | |
20 | ||
21 | ;; You should have received a copy of the GNU General Public License | |
22 | ;; along with GNU Emacs; see the file COPYING. If not, write to | |
23 | ;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. | |
8e1cae6d | 24 | |
3b1e4dd1 ER |
25 | ;;; Commentary: |
26 | ||
8e1cae6d JB |
27 | ;;;==================================================================== |
28 | ;; Instructions | |
29 | ||
08200510 RS |
30 | ;; For programmed use of isearch-mode, e.g. calling (isearch-forward), |
31 | ;; isearch-mode behaves modally and does not return until the search | |
32 | ;; is completed. It uses a recursive-edit to behave this way. Note: | |
33 | ;; gnus does it wrong: (call-interactively 'isearch-forward). | |
34 | ||
8e1cae6d | 35 | ;; The key bindings active within isearch-mode are defined below in |
08200510 RS |
36 | ;; `isearch-mode-map' which is given bindings close to the default |
37 | ;; characters of the original isearch.el. With `isearch-mode', | |
38 | ;; however, you can bind multi-character keys and it should be easier | |
39 | ;; to add new commands. One bug though: keys with meta-prefix cannot | |
40 | ;; be longer than two chars. Also see minibuffer-local-isearch-map | |
41 | ;; for bindings active during `isearch-edit-string'. | |
42 | ||
43 | ;; Note to emacs version 19 users: isearch-mode should work even if | |
44 | ;; you switch windows with the mouse, in which case isearch-mode is | |
45 | ;; terminated automatically before the switch. This is true of lemacs | |
46 | ;; too, with a few more cleanups I've neglected in this release. | |
47 | ;; No one has supplied patches for epoch yet. | |
48 | ||
49 | ;; The search ring and completion commands automatically put you in | |
50 | ;; the minibuffer to edit the string. This gives you a chance to | |
51 | ;; modify the search string before executing the search. There are | |
52 | ;; three commands to terminate the editing: C-s and C-r exit the | |
53 | ;; minibuffer and search forward and reverse respectively, while C-m | |
54 | ;; exits and does a nonincremental search. | |
55 | ||
56 | ;; Exiting immediately from isearch uses isearch-edit-string instead | |
57 | ;; of nonincremental-search, if search-nonincremental-instead is non-nil. | |
58 | ;; The name of this option should probably be changed if we decide to | |
59 | ;; keep the behavior. No point in forcing nonincremental search until | |
60 | ;; the last possible moment. | |
61 | ||
62 | ;; TODO | |
eb8c3be9 | 63 | ;; - Integrate the emacs 19 generalized command history. |
08200510 RS |
64 | ;; - Think about incorporating query-replace. |
65 | ;; - Hooks and options for failed search. | |
282d89c0 | 66 | |
3b1e4dd1 ER |
67 | ;;; Change Log: |
68 | ||
8cb2ceaa RS |
69 | ;;; Changes before those recorded in ChangeLog: |
70 | ||
08200510 RS |
71 | ;;; Revision 1.4 92/09/14 16:26:02 liberte |
72 | ;;; Added prefix args to isearch-forward, etc. to switch between | |
73 | ;;; string and regular expression searching. | |
74 | ;;; Added some support for lemacs. | |
75 | ;;; Added general isearch-highlight option - but only for lemacs so far. | |
76 | ;;; Added support for frame switching in emacs 19. | |
77 | ;;; Added word search option to isearch-edit-string. | |
78 | ;;; Renamed isearch-quit to isearch-abort. | |
79 | ;;; Numerous changes to comments and doc strings. | |
282d89c0 | 80 | ;;; |
08200510 RS |
81 | ;;; Revision 1.3 92/06/29 13:10:08 liberte |
82 | ;;; Moved modal isearch-mode handling into isearch-mode. | |
83 | ;;; Got rid of buffer-local isearch variables. | |
84 | ;;; isearch-edit-string used by ring adjustments, completion, and | |
85 | ;;; nonincremental searching. C-s and C-r are additional exit commands. | |
86 | ;;; Renamed all regex to regexp. | |
87 | ;;; Got rid of found-start and found-point globals. | |
88 | ;;; Generalized handling of upper-case chars. | |
89 | ||
90 | ;;; Revision 1.2 92/05/27 11:33:57 liberte | |
91 | ;;; Emacs version 19 has a search ring, which is supported here. | |
92 | ;;; Other fixes found in the version 19 isearch are included here. | |
93 | ;;; | |
94 | ;;; Also see variables search-caps-disable-folding, | |
95 | ;;; search-nonincremental-instead, search-whitespace-regexp, and | |
96 | ;;; commands isearch-toggle-regexp, isearch-edit-string. | |
97 | ;;; | |
98 | ;;; semi-modal isearching is supported. | |
282d89c0 ER |
99 | |
100 | ;;; Changes for 1.1 | |
101 | ;;; 3/18/92 Fixed invalid-regexp. | |
102 | ;;; 3/18/92 Fixed yanking in regexps. | |
103 | ||
3b1e4dd1 | 104 | ;;; Code: |
08200510 RS |
105 | |
106 | \f | |
107 | ;;;========================================================================= | |
108 | ;;; Emacs features | |
109 | ||
110 | ;; isearch-mode takes advantage of the features provided by several | |
111 | ;; different versions of emacs. Rather than testing the version of | |
112 | ;; emacs, several constants are defined, one for each of the features. | |
113 | ;; Each of the tests below must work on any version of emacs. | |
114 | ;; (Perhaps provide and featurep could be used for this purpose.) | |
115 | ||
1a3a6707 | 116 | (defconst isearch-gnu-emacs-events (fboundp 'set-frame-height)) ;; emacs 19 |
08200510 | 117 | (defconst isearch-pre-command-hook-exists (boundp 'pre-command-hook)) ;; lemacs |
a5dcf63f | 118 | (defconst isearch-event-data-type nil) ;; lemacs |
08200510 | 119 | |
fdf5afa4 | 120 | (defconst search-exit-option t |
a8f783b2 | 121 | "*Non-nil means random control characters terminate incremental search.") |
fdf5afa4 RS |
122 | |
123 | (defvar search-slow-window-lines 1 | |
124 | "*Number of lines in slow search display windows. | |
125 | These are the short windows used during incremental search on slow terminals. | |
126 | Negative means put the slow search window at the top (normally it's at bottom) | |
127 | and the value is minus the number of lines.") | |
128 | ||
129 | (defvar search-slow-speed 1200 | |
130 | "*Highest terminal speed at which to use \"slow\" style incremental search. | |
131 | This is the style where a one-line window is created to show the line | |
132 | that the search has reached.") | |
8e1cae6d JB |
133 | |
134 | ;;;======================================================================== | |
135 | ;;; Some additional options and constants. | |
136 | ||
b78559b0 | 137 | (defvar search-upper-case 'not-yanks |
8e1cae6d | 138 | "*If non-nil, upper case chars disable case fold searching. |
08200510 RS |
139 | That is, upper and lower case chars must match exactly. |
140 | This applies no matter where the chars come from, but does not | |
fdf5afa4 RS |
141 | apply to chars in regexps that are prefixed with `\\'. |
142 | If this value is `not-yanks', yanked text is always downcased.") | |
8e1cae6d JB |
143 | |
144 | (defvar search-nonincremental-instead t | |
145 | "*If non-nil, do a nonincremental search instead if exiting immediately. | |
08200510 RS |
146 | Actually, `isearch-edit-string' is called to let you enter the search |
147 | string, and RET terminates editing and does a nonincremental search.") | |
8e1cae6d JB |
148 | |
149 | (defconst search-whitespace-regexp "\\s-+" | |
150 | "*If non-nil, regular expression to match a sequence of whitespace chars. | |
151 | You might want to use something like \"[ \\t\\r\\n]+\" instead.") | |
152 | ||
a8f783b2 RS |
153 | ;; I removed the * from the doc string because highlighting is not |
154 | ;; currently a clean thing to do. Once highlighting is made clean, | |
155 | ;; this feature can be re-enabled and advertised. | |
08200510 | 156 | (defvar search-highlight nil |
b78559b0 | 157 | "*Non-nil means incremental search highlights the current match.") |
08200510 RS |
158 | |
159 | (defvar isearch-mode-hook nil | |
160 | "Function(s) to call after starting up an incremental search.") | |
161 | ||
162 | (defvar isearch-mode-end-hook nil | |
163 | "Function(s) to call after terminating an incremental search.") | |
164 | ||
8e1cae6d JB |
165 | ;;;================================================================== |
166 | ;;; Search ring. | |
8e1cae6d JB |
167 | |
168 | (defvar search-ring nil | |
169 | "List of search string sequences.") | |
08200510 | 170 | (defvar regexp-search-ring nil |
8e1cae6d JB |
171 | "List of regular expression search string sequences.") |
172 | ||
173 | (defconst search-ring-max 16 | |
174 | "*Maximum length of search ring before oldest elements are thrown away.") | |
08200510 RS |
175 | (defconst regexp-search-ring-max 16 |
176 | "*Maximum length of regexp search ring before oldest elements are thrown away.") | |
8e1cae6d JB |
177 | |
178 | (defvar search-ring-yank-pointer nil | |
a5dcf63f RS |
179 | "Index in `search-ring' of last string reused. |
180 | nil if none yet.") | |
08200510 | 181 | (defvar regexp-search-ring-yank-pointer nil |
a5dcf63f RS |
182 | "Index in `regexp-search-ring' of last string reused. |
183 | nil if none yet.") | |
8e1cae6d | 184 | |
08200510 RS |
185 | (defvar search-ring-update nil |
186 | "*Non-nil if advancing or retreating in the search ring should cause search. | |
187 | Default value, nil, means edit the string instead.") | |
188 | ||
8e1cae6d JB |
189 | ;;;==================================================== |
190 | ;;; Define isearch-mode keymap. | |
191 | ||
192 | (defvar isearch-mode-map nil | |
193 | "Keymap for isearch-mode.") | |
194 | ||
08200510 RS |
195 | (or isearch-mode-map |
196 | (let* ((i 0) | |
fdf5afa4 | 197 | (map (make-keymap))) |
fcf8ba15 RS |
198 | (or (vectorp (nth 1 map)) |
199 | (error "The initialization of isearch-mode-map must be updated")) | |
200 | ;; Give this map a vector 256 long, for dense binding | |
201 | ;; of a larger range of ordinary characters. | |
202 | (setcar (cdr map) (make-vector 256 nil)) | |
08200510 | 203 | |
ac689515 RS |
204 | ;; Make function keys, etc, exit the search. |
205 | (define-key map [t] 'isearch-other-control-char) | |
08200510 | 206 | ;; Control chars, by default, end isearch mode transparently. |
ac689515 RS |
207 | ;; We need these explicit definitions because, in a dense keymap, |
208 | ;; the binding for t does not affect characters. | |
209 | ;; We use a dense keymap to save space. | |
08200510 RS |
210 | (while (< i ?\ ) |
211 | (define-key map (make-string 1 i) 'isearch-other-control-char) | |
212 | (setq i (1+ i))) | |
213 | ||
8cb2ceaa | 214 | ;; Printing chars extend the search string by default. |
ac689515 | 215 | (setq i ?\ ) |
8d7e4e80 | 216 | (while (< i (length (nth 1 map))) |
8cb2ceaa | 217 | (define-key map (vector i) 'isearch-printing-char) |
08200510 RS |
218 | (setq i (1+ i))) |
219 | ||
220 | ;; Several non-printing chars change the searching behavior. | |
221 | (define-key map "\C-s" 'isearch-repeat-forward) | |
222 | (define-key map "\C-r" 'isearch-repeat-backward) | |
223 | (define-key map "\177" 'isearch-delete-char) | |
224 | (define-key map "\C-g" 'isearch-abort) | |
8e1cae6d | 225 | |
08200510 RS |
226 | (define-key map "\C-q" 'isearch-quote-char) |
227 | ||
08200510 RS |
228 | (define-key map "\r" 'isearch-exit) |
229 | (define-key map "\C-j" 'isearch-printing-char) | |
230 | (define-key map "\t" 'isearch-printing-char) | |
231 | (define-key map " " 'isearch-whitespace-chars) | |
8e1cae6d | 232 | |
08200510 RS |
233 | (define-key map "\C-w" 'isearch-yank-word) |
234 | (define-key map "\C-y" 'isearch-yank-line) | |
30d47262 RS |
235 | (define-key map [mouse-2] 'isearch-yank-kill) |
236 | ;; This overrides the default binding for t. | |
237 | (define-key map [down-mouse-2] 'nil) | |
08200510 | 238 | |
e7cb0106 RS |
239 | ;; Bind the ASCII-equivalent "function keys" explicitly |
240 | ;; if we bind their equivalents, | |
241 | ;; since otherwise the default binding would override. | |
242 | ;; We bind [escape] below. | |
243 | (define-key map [tab] 'isearch-printing-char) | |
f7ead361 RS |
244 | (define-key map [kp-0] 'isearch-printing-char) |
245 | (define-key map [kp-1] 'isearch-printing-char) | |
246 | (define-key map [kp-2] 'isearch-printing-char) | |
247 | (define-key map [kp-3] 'isearch-printing-char) | |
248 | (define-key map [kp-4] 'isearch-printing-char) | |
249 | (define-key map [kp-5] 'isearch-printing-char) | |
250 | (define-key map [kp-6] 'isearch-printing-char) | |
251 | (define-key map [kp-7] 'isearch-printing-char) | |
252 | (define-key map [kp-8] 'isearch-printing-char) | |
253 | (define-key map [kp-9] 'isearch-printing-char) | |
254 | (define-key map [kp-add] 'isearch-printing-char) | |
255 | (define-key map [kp-subtract] 'isearch-printing-char) | |
256 | (define-key map [kp-multiply] 'isearch-printing-char) | |
257 | (define-key map [kp-divide] 'isearch-printing-char) | |
258 | (define-key map [kp-decimal] 'isearch-printing-char) | |
259 | (define-key map [kp-separator] 'isearch-printing-char) | |
260 | (define-key map [kp-equal] 'isearch-printing-char) | |
261 | (define-key map [kp-tab] 'isearch-printing-char) | |
262 | (define-key map [kp-space] 'isearch-printing-char) | |
263 | (define-key map [kp-enter] 'isearch-exit) | |
e7cb0106 RS |
264 | (define-key map [delete] 'isearch-delete-char) |
265 | (define-key map [backspace] 'isearch-delete-char) | |
266 | (define-key map [return] 'isearch-exit) | |
267 | (define-key map [newline] 'isearch-printing-char) | |
268 | ||
08200510 RS |
269 | ;; Define keys for regexp chars * ? |. |
270 | ;; Nothing special for + because it matches at least once. | |
271 | (define-key map "*" 'isearch-*-char) | |
272 | (define-key map "?" 'isearch-*-char) | |
273 | (define-key map "|" 'isearch-|-char) | |
274 | ||
58f1634a RS |
275 | ;;; Turned off because I find I expect to get the global definition--rms. |
276 | ;;; ;; Instead bind C-h to special help command for isearch-mode. | |
277 | ;;; (define-key map "\C-h" 'isearch-mode-help) | |
08200510 RS |
278 | |
279 | ;; To handle local bindings with meta char prefix keys, define | |
280 | ;; another full keymap. This must be done for any other prefix | |
281 | ;; keys as well, one full keymap per char of the prefix key. It | |
282 | ;; would be simpler to disable the global keymap, and/or have a | |
283 | ;; default local key binding for any key not otherwise bound. | |
e7cb0106 RS |
284 | (let ((meta-map (make-sparse-keymap))) |
285 | (define-key map (char-to-string meta-prefix-char) meta-map) | |
286 | (define-key map [escape] meta-map)) | |
ac689515 | 287 | (define-key map (vector meta-prefix-char t) 'isearch-other-meta-char) |
08200510 RS |
288 | |
289 | (define-key map "\M-n" 'isearch-ring-advance) | |
290 | (define-key map "\M-p" 'isearch-ring-retreat) | |
30d47262 | 291 | (define-key map "\M-y" 'isearch-yank-kill) |
1a3a6707 | 292 | |
08200510 RS |
293 | (define-key map "\M-\t" 'isearch-complete) |
294 | ||
295 | ;; For emacs 19, switching frames should terminate isearch-mode | |
1a3a6707 | 296 | (if isearch-gnu-emacs-events |
08200510 RS |
297 | (define-key map [switch-frame] 'isearch-switch-frame-handler)) |
298 | ||
299 | (setq isearch-mode-map map) | |
300 | )) | |
8e1cae6d | 301 | |
08200510 RS |
302 | ;; Some bindings you may want to put in your isearch-mode-hook. |
303 | ;; Suggest some alternates... | |
304 | ;; (define-key isearch-mode-map "\C-t" 'isearch-toggle-regexp) | |
305 | ;; (define-key isearch-mode-map "\C-^" 'isearch-edit-string) | |
8e1cae6d | 306 | |
8e1cae6d | 307 | |
08200510 RS |
308 | (defvar minibuffer-local-isearch-map nil |
309 | "Keymap for editing isearch strings in the minibuffer.") | |
8e1cae6d | 310 | |
08200510 RS |
311 | (or minibuffer-local-isearch-map |
312 | (let ((map (copy-keymap minibuffer-local-map))) | |
313 | (define-key map "\r" 'isearch-nonincremental-exit-minibuffer) | |
35a4d143 RS |
314 | (define-key map "\M-n" 'isearch-ring-advance-edit) |
315 | (define-key map "\M-p" 'isearch-ring-retreat-edit) | |
08200510 RS |
316 | (define-key map "\M-\t" 'isearch-complete-edit) |
317 | (define-key map "\C-s" 'isearch-forward-exit-minibuffer) | |
318 | (define-key map "\C-r" 'isearch-reverse-exit-minibuffer) | |
319 | (setq minibuffer-local-isearch-map map) | |
320 | )) | |
8e1cae6d JB |
321 | |
322 | ;;;======================================================== | |
323 | ;; Internal variables declared globally for byte-compiler. | |
08200510 RS |
324 | ;; These are all set with setq while isearching |
325 | ;; and bound locally while editing the search string. | |
326 | ||
327 | (defvar isearch-forward nil) ; Searching in the forward direction. | |
328 | (defvar isearch-regexp nil) ; Searching for a regexp. | |
329 | (defvar isearch-word nil) ; Searching for words. | |
330 | ||
331 | (defvar isearch-cmds nil) ; Stack of search status sets. | |
332 | (defvar isearch-string "") ; The current search string. | |
333 | (defvar isearch-message "") ; text-char-description version of isearch-string | |
334 | ||
335 | (defvar isearch-success t) ; Searching is currently successful. | |
336 | (defvar isearch-invalid-regexp nil) ; Regexp not well formed. | |
c5f6b356 | 337 | (defvar isearch-within-brackets nil) ; Regexp has unclosed [. |
08200510 RS |
338 | (defvar isearch-other-end nil) ; Start (end) of match if forward (backward). |
339 | (defvar isearch-wrapped nil) ; Searching restarted from the top (bottom). | |
8e1cae6d JB |
340 | (defvar isearch-barrier 0) |
341 | ||
08200510 | 342 | (defvar isearch-case-fold-search nil) ; case-fold-search while searching. |
8e1cae6d JB |
343 | |
344 | (defvar isearch-adjusted nil) | |
345 | (defvar isearch-slow-terminal-mode nil) | |
08200510 RS |
346 | ;;; If t, using a small window. |
347 | (defvar isearch-small-window nil) | |
8e1cae6d | 348 | (defvar isearch-opoint 0) |
08200510 RS |
349 | ;;; The window configuration active at the beginning of the search. |
350 | (defvar isearch-window-configuration nil) | |
8e1cae6d | 351 | |
08200510 RS |
352 | ;; Flag to indicate a yank occurred, so don't move the cursor. |
353 | (defvar isearch-yank-flag nil) | |
8e1cae6d | 354 | |
08200510 RS |
355 | ;;; A function to be called after each input character is processed. |
356 | ;;; (It is not called after characters that exit the search.) | |
357 | ;;; It is only set from an optional argument to `isearch-mode'. | |
358 | (defvar isearch-op-fun nil) | |
8e1cae6d | 359 | |
08200510 RS |
360 | ;;; Is isearch-mode in a recursive edit for modal searching. |
361 | (defvar isearch-recursive-edit nil) | |
8e1cae6d | 362 | |
08200510 RS |
363 | ;;; Should isearch be terminated after doing one search? |
364 | (defvar isearch-nonincremental nil) | |
365 | ||
366 | ;; New value of isearch-forward after isearch-edit-string. | |
367 | (defvar isearch-new-forward nil) | |
8e1cae6d | 368 | |
8e1cae6d JB |
369 | |
370 | ;;;============================================================== | |
371 | ;; Minor-mode-alist changes - kind of redundant with the | |
372 | ;; echo area, but if isearching in multiple windows, it can be useful. | |
373 | ||
374 | (or (assq 'isearch-mode minor-mode-alist) | |
375 | (nconc minor-mode-alist | |
376 | (list '(isearch-mode isearch-mode)))) | |
377 | ||
08200510 | 378 | (defvar isearch-mode nil) ;; Name of the minor mode, if non-nil. |
8e1cae6d JB |
379 | (make-variable-buffer-local 'isearch-mode) |
380 | ||
fdf5afa4 RS |
381 | (define-key global-map "\C-s" 'isearch-forward) |
382 | (define-key esc-map "\C-s" 'isearch-forward-regexp) | |
383 | (define-key global-map "\C-r" 'isearch-backward) | |
384 | (define-key esc-map "\C-r" 'isearch-backward-regexp) | |
385 | ||
8e1cae6d JB |
386 | ;;;=============================================================== |
387 | ;;; Entry points to isearch-mode. | |
08200510 | 388 | ;;; These four functions should replace those in loaddefs.el |
b457cc3b | 389 | ;;; An alternative is to defalias isearch-forward etc to isearch-mode, |
08200510 | 390 | ;;; and look at this-command to set the options accordingly. |
8e1cae6d | 391 | |
eceee2c0 | 392 | (defun isearch-forward (&optional regexp-p no-recursive-edit) |
8e1cae6d JB |
393 | "\ |
394 | Do incremental search forward. | |
08200510 RS |
395 | With a prefix argument, do an incremental regular expression search instead. |
396 | \\<isearch-mode-map> | |
8e1cae6d | 397 | As you type characters, they add to the search string and are found. |
08200510 | 398 | The following non-printing keys are bound in `isearch-mode-map'. |
8e1cae6d | 399 | |
08200510 | 400 | Type \\[isearch-delete-char] to cancel characters from end of search string. |
8e1cae6d | 401 | Type \\[isearch-exit] to exit, leaving point at location found. |
08200510 RS |
402 | Type LFD (C-j) to match end of line. |
403 | Type \\[isearch-repeat-forward] to search again forward,\ | |
404 | \\[isearch-repeat-backward] to search again backward. | |
405 | Type \\[isearch-yank-word] to yank word from buffer onto end of search\ | |
406 | string and search for it. | |
407 | Type \\[isearch-yank-line] to yank rest of line onto end of search string\ | |
408 | and search for it. | |
8e1cae6d | 409 | Type \\[isearch-quote-char] to quote control character to search for it. |
08200510 RS |
410 | \\[isearch-abort] while searching or when search has failed cancels input\ |
411 | back to what has | |
412 | been found successfully. | |
413 | \\[isearch-abort] when search is successful aborts and moves point to\ | |
414 | starting point. | |
8e1cae6d JB |
415 | |
416 | Also supported is a search ring of the previous 16 search strings. | |
417 | Type \\[isearch-ring-advance] to search for the next item in the search ring. | |
08200510 RS |
418 | Type \\[isearch-ring-retreat] to search for the previous item in the search\ |
419 | ring. | |
420 | Type \\[isearch-complete] to complete the search string using the search ring. | |
8e1cae6d | 421 | |
08200510 RS |
422 | The above keys, bound in `isearch-mode-map', are often controlled by |
423 | options; do M-x apropos on search-.* to find them. | |
8e1cae6d | 424 | Other control and meta characters terminate the search |
08200510 | 425 | and are then executed normally (depending on `search-exit-option'). |
8e1cae6d | 426 | |
08200510 RS |
427 | If this function is called non-interactively, it does not return to |
428 | the calling function until the search is done." | |
8e1cae6d | 429 | |
eceee2c0 | 430 | (interactive "P\np") |
4ae7d00a | 431 | (isearch-mode t (not (null regexp-p)) nil (not no-recursive-edit))) |
8e1cae6d | 432 | |
eceee2c0 | 433 | (defun isearch-forward-regexp (&optional not-regexp no-recursive-edit) |
8e1cae6d JB |
434 | "\ |
435 | Do incremental search forward for regular expression. | |
08200510 | 436 | With a prefix argument, do a regular string search instead. |
8e1cae6d JB |
437 | Like ordinary incremental search except that your input |
438 | is treated as a regexp. See \\[isearch-forward] for more info." | |
eceee2c0 | 439 | (interactive "P\np") |
4ae7d00a | 440 | (isearch-mode t (null not-regexp) nil (not no-recursive-edit))) |
8e1cae6d | 441 | |
eceee2c0 | 442 | (defun isearch-backward (&optional regexp-p no-recursive-edit) |
8e1cae6d JB |
443 | "\ |
444 | Do incremental search backward. | |
08200510 | 445 | With a prefix argument, do a regular expression search instead. |
8e1cae6d | 446 | See \\[isearch-forward] for more information." |
eceee2c0 | 447 | (interactive "P\np") |
4ae7d00a | 448 | (isearch-mode nil (not (null regexp-p)) nil (not no-recursive-edit))) |
8e1cae6d | 449 | |
eceee2c0 | 450 | (defun isearch-backward-regexp (&optional not-regexp no-recursive-edit) |
8e1cae6d JB |
451 | "\ |
452 | Do incremental search backward for regular expression. | |
08200510 | 453 | With a prefix argument, do a regular string search instead. |
8e1cae6d JB |
454 | Like ordinary incremental search except that your input |
455 | is treated as a regexp. See \\[isearch-forward] for more info." | |
eceee2c0 | 456 | (interactive "P\np") |
4ae7d00a | 457 | (isearch-mode nil (null not-regexp) nil (not no-recursive-edit))) |
08200510 RS |
458 | |
459 | ||
460 | (defun isearch-mode-help () | |
461 | (interactive) | |
462 | (describe-function 'isearch-forward) | |
463 | (isearch-update)) | |
8e1cae6d JB |
464 | |
465 | \f | |
466 | ;;;================================================================== | |
467 | ;; isearch-mode only sets up incremental search for the minor mode. | |
468 | ;; All the work is done by the isearch-mode commands. | |
469 | ||
08200510 RS |
470 | ;; Not used yet: |
471 | ;;(defconst isearch-commands '(isearch-forward isearch-backward | |
472 | ;; isearch-forward-regexp isearch-backward-regexp) | |
473 | ;; "List of commands for which isearch-mode does not recursive-edit.") | |
474 | ||
475 | ||
476 | (defun isearch-mode (forward &optional regexp op-fun recursive-edit word-p) | |
8e1cae6d | 477 | "Start isearch minor mode. Called by isearch-forward, etc." |
8e1cae6d JB |
478 | |
479 | ;; Initialize global vars. | |
480 | (setq isearch-forward forward | |
481 | isearch-regexp regexp | |
08200510 | 482 | isearch-word word-p |
8e1cae6d JB |
483 | isearch-op-fun op-fun |
484 | isearch-case-fold-search case-fold-search | |
485 | isearch-string "" | |
486 | isearch-message "" | |
487 | isearch-cmds nil | |
488 | isearch-success t | |
489 | isearch-wrapped nil | |
490 | isearch-barrier (point) | |
491 | isearch-adjusted nil | |
492 | isearch-yank-flag nil | |
493 | isearch-invalid-regexp nil | |
c5f6b356 | 494 | isearch-within-brackets nil |
dd492f04 JA |
495 | ;; Use (baud-rate) for now, for sake of other versions. |
496 | isearch-slow-terminal-mode (and (<= (baud-rate) search-slow-speed) | |
8e1cae6d JB |
497 | (> (window-height) |
498 | (* 4 search-slow-window-lines))) | |
499 | isearch-other-end nil | |
500 | isearch-small-window nil | |
8e1cae6d | 501 | |
8e1cae6d | 502 | isearch-opoint (point) |
a5dcf63f RS |
503 | search-ring-yank-pointer nil |
504 | regexp-search-ring-yank-pointer nil) | |
292a8dff RS |
505 | (setq isearch-window-configuration |
506 | (if isearch-slow-terminal-mode (current-window-configuration) nil)) | |
70418205 | 507 | |
2ed45c8b RS |
508 | ;; This was for Lucid Emacs. But now that we have pre-command-hook, |
509 | ;; it causes trouble. | |
510 | ;; (if isearch-pre-command-hook-exists | |
511 | ;; (add-hook 'pre-command-hook 'isearch-pre-command-hook)) | |
8e1cae6d JB |
512 | (setq isearch-mode " Isearch") ;; forward? regexp? |
513 | (set-buffer-modified-p (buffer-modified-p)) ; update modeline | |
514 | ||
7492a21e RS |
515 | ;; It is ugly to show region highlighting while the search |
516 | ;; is going on. And we don't want the mark active at the end either. | |
517 | (setq deactivate-mark t) | |
518 | ||
8e1cae6d JB |
519 | (isearch-push-state) |
520 | ||
849cfd72 RS |
521 | (make-local-variable 'overriding-local-map) |
522 | (setq overriding-local-map isearch-mode-map) | |
8e1cae6d JB |
523 | (isearch-update) |
524 | (run-hooks 'isearch-mode-hook) | |
08200510 RS |
525 | |
526 | ;; isearch-mode can be made modal (in the sense of not returning to | |
527 | ;; the calling function until searching is completed) by entering | |
528 | ;; a recursive-edit and exiting it when done isearching. | |
130bf67c RS |
529 | (if recursive-edit |
530 | (let ((isearch-recursive-edit t)) | |
531 | (recursive-edit))) | |
8e1cae6d JB |
532 | ) |
533 | ||
534 | ||
535 | ;;;==================================================== | |
536 | ;; Some high level utilities. Others below. | |
537 | ||
538 | (defun isearch-update () | |
539 | ;; Called after each command to update the display. | |
a5dcf63f | 540 | (if (if isearch-event-data-type |
08200510 | 541 | (null unread-command-event) |
1a3a6707 | 542 | (if isearch-gnu-emacs-events |
dbc4e1c1 | 543 | (null unread-command-events) |
08200510 | 544 | (< unread-command-char 0))) |
8e1cae6d JB |
545 | (progn |
546 | (if (not (input-pending-p)) | |
547 | (isearch-message)) | |
548 | (if (and isearch-slow-terminal-mode | |
549 | (not (or isearch-small-window | |
550 | (pos-visible-in-window-p)))) | |
08200510 | 551 | (let ((found-point (point))) |
8e1cae6d | 552 | (setq isearch-small-window t) |
8e1cae6d JB |
553 | (move-to-window-line 0) |
554 | (let ((window-min-height 1)) | |
555 | (split-window nil (if (< search-slow-window-lines 0) | |
556 | (1+ (- search-slow-window-lines)) | |
557 | (- (window-height) | |
558 | (1+ search-slow-window-lines))))) | |
559 | (if (< search-slow-window-lines 0) | |
560 | (progn (vertical-motion (- 1 search-slow-window-lines)) | |
561 | (set-window-start (next-window) (point)) | |
562 | (set-window-hscroll (next-window) | |
563 | (window-hscroll)) | |
564 | (set-window-hscroll (selected-window) 0)) | |
565 | (other-window 1)) | |
08200510 RS |
566 | (goto-char found-point))) |
567 | (if isearch-other-end | |
568 | (if (< isearch-other-end (point)) ; isearch-forward? | |
569 | (isearch-highlight isearch-other-end (point)) | |
99afb671 RS |
570 | (isearch-highlight (point) isearch-other-end)) |
571 | (isearch-dehighlight nil)) | |
08200510 | 572 | )) |
8e1cae6d JB |
573 | (setq ;; quit-flag nil not for isearch-mode |
574 | isearch-adjusted nil | |
575 | isearch-yank-flag nil) | |
576 | ) | |
577 | ||
578 | ||
35a4d143 | 579 | (defun isearch-done (&optional nopush) |
8e1cae6d | 580 | ;; Called by all commands that terminate isearch-mode. |
35a4d143 | 581 | ;; If NOPUSH is non-nil, we don't push the string on the search ring. |
849cfd72 | 582 | (setq overriding-local-map nil) |
08200510 RS |
583 | ;; (setq pre-command-hook isearch-old-pre-command-hook) ; for lemacs |
584 | (isearch-dehighlight t) | |
585 | (let ((found-start (window-start (selected-window))) | |
586 | (found-point (point))) | |
70418205 RS |
587 | (if isearch-window-configuration |
588 | (set-window-configuration isearch-window-configuration)) | |
08200510 | 589 | |
d49b6338 RS |
590 | (if isearch-small-window |
591 | (goto-char found-point) | |
592 | ;; Exiting the save-window-excursion clobbers window-start; restore it. | |
593 | (set-window-start (selected-window) found-start t))) | |
594 | ||
08200510 RS |
595 | ;; If there was movement, mark the starting position. |
596 | ;; Maybe should test difference between and set mark iff > threshold. | |
597 | (if (/= (point) isearch-opoint) | |
7872ee4d RS |
598 | (progn |
599 | (push-mark isearch-opoint t) | |
67cbb73f | 600 | (deactivate-mark) |
7872ee4d RS |
601 | (or executing-macro (> (minibuffer-depth) 0) |
602 | (message "Mark saved where search started"))) | |
08200510 RS |
603 | ;; (message "") why is this needed? |
604 | ) | |
08200510 RS |
605 | |
606 | (setq isearch-mode nil) | |
607 | (set-buffer-modified-p (buffer-modified-p)) ;; update modeline | |
8e1cae6d | 608 | |
35a4d143 | 609 | (if (and (> (length isearch-string) 0) (not nopush)) |
8e1cae6d JB |
610 | ;; Update the ring data. |
611 | (if isearch-regexp | |
a8f783b2 RS |
612 | (if (or (null regexp-search-ring) |
613 | (not (string= isearch-string (car regexp-search-ring)))) | |
8e1cae6d | 614 | (progn |
08200510 | 615 | (setq regexp-search-ring |
a5dcf63f | 616 | (cons isearch-string regexp-search-ring)) |
08200510 RS |
617 | (if (> (length regexp-search-ring) regexp-search-ring-max) |
618 | (setcdr (nthcdr (1- search-ring-max) regexp-search-ring) | |
8e1cae6d | 619 | nil)))) |
a8f783b2 RS |
620 | (if (or (null search-ring) |
621 | (not (string= isearch-string (car search-ring)))) | |
8e1cae6d | 622 | (progn |
a5dcf63f | 623 | (setq search-ring (cons isearch-string search-ring)) |
8e1cae6d JB |
624 | (if (> (length search-ring) search-ring-max) |
625 | (setcdr (nthcdr (1- search-ring-max) search-ring) nil)))))) | |
626 | ||
8e1cae6d | 627 | (run-hooks 'isearch-mode-end-hook) |
08200510 RS |
628 | (if isearch-recursive-edit (exit-recursive-edit))) |
629 | ||
630 | ;;;======================================================= | |
631 | ;;; Switching buffers should first terminate isearch-mode. | |
eb8c3be9 | 632 | ;;; This is done quite differently for each variant of emacs. |
08200510 RS |
633 | ;;; For lemacs, see Exiting in lemacs below |
634 | ||
635 | ;; For Emacs 19, the frame switch event is handled. | |
636 | (defun isearch-switch-frame-handler () | |
637 | (interactive) ;; Is this necessary? | |
638 | ;; First terminate isearch-mode. | |
639 | (isearch-done) | |
dba1ec55 | 640 | (handle-switch-frame (car (cdr (isearch-last-command-char))))) |
08200510 RS |
641 | |
642 | ;;;======================================================== | |
8e1cae6d JB |
643 | |
644 | \f | |
645 | ;;;==================================================== | |
646 | ;; Commands active while inside of the isearch minor mode. | |
647 | ||
648 | (defun isearch-exit () | |
649 | "Exit search normally. | |
650 | However, if this is the first command after starting incremental | |
651 | search and `search-nonincremental-instead' is non-nil, do a | |
08200510 | 652 | nonincremental search instead via `isearch-edit-string'." |
8e1cae6d JB |
653 | (interactive) |
654 | (if (and search-nonincremental-instead | |
655 | (= 0 (length isearch-string))) | |
08200510 RS |
656 | (let ((isearch-nonincremental t)) |
657 | (isearch-edit-string))) | |
8e1cae6d JB |
658 | (isearch-done)) |
659 | ||
660 | ||
661 | (defun isearch-edit-string () | |
08200510 RS |
662 | "Edit the search string in the minibuffer. |
663 | The following additional command keys are active while editing. | |
664 | \\<minibuffer-local-isearch-map> | |
665 | \\[exit-minibuffer] to resume incremental searching with the edited string. | |
666 | \\[isearch-nonincremental-exit-minibuffer] to do one nonincremental search. | |
667 | \\[isearch-forward-exit-minibuffer] to resume isearching forward. | |
668 | \\[isearch-backward-exit-minibuffer] to resume isearching backward. | |
669 | \\[isearch-ring-advance-edit] to replace the search string with the next item in the search ring. | |
eb8c3be9 | 670 | \\[isearch-ring-retreat-edit] to replace the search string with the previous item in the search ring. |
08200510 RS |
671 | \\[isearch-complete-edit] to complete the search string using the search ring. |
672 | ||
673 | If first char entered is \\[isearch-yank-word], then do word search instead." | |
674 | ||
675 | ;; This code is very hairy for several reasons, explained in the code. | |
676 | ;; Mainly, isearch-mode must be terminated while editing and then restarted. | |
677 | ;; If there were a way to catch any change of buffer from the minibuffer, | |
678 | ;; this could be simplified greatly. | |
eb8c3be9 | 679 | ;; Editing doesn't back up the search point. Should it? |
8e1cae6d | 680 | (interactive) |
08200510 | 681 | (condition-case err |
a9a5a9fa | 682 | (let ((isearch-nonincremental isearch-nonincremental) |
08200510 RS |
683 | |
684 | ;; Locally bind all isearch global variables to protect them | |
685 | ;; from recursive isearching. | |
686 | ;; isearch-string -message and -forward are not bound | |
687 | ;; so they may be changed. Instead, save the values. | |
688 | (isearch-new-string isearch-string) | |
689 | (isearch-new-message isearch-message) | |
690 | (isearch-new-forward isearch-forward) | |
691 | (isearch-new-word isearch-word) | |
692 | ||
693 | (isearch-regexp isearch-regexp) | |
694 | (isearch-op-fun isearch-op-fun) | |
695 | (isearch-cmds isearch-cmds) | |
696 | (isearch-success isearch-success) | |
697 | (isearch-wrapped isearch-wrapped) | |
698 | (isearch-barrier isearch-barrier) | |
699 | (isearch-adjusted isearch-adjusted) | |
700 | (isearch-yank-flag isearch-yank-flag) | |
701 | (isearch-invalid-regexp isearch-invalid-regexp) | |
c5f6b356 | 702 | (isearch-within-brackets isearch-within-brackets) |
08200510 RS |
703 | (isearch-other-end isearch-other-end) |
704 | (isearch-opoint isearch-opoint) | |
705 | (isearch-slow-terminal-mode isearch-slow-terminal-mode) | |
706 | (isearch-small-window isearch-small-window) | |
707 | (isearch-recursive-edit isearch-recursive-edit) | |
708 | ;; Save current configuration so we can restore it here. | |
709 | (isearch-window-configuration (current-window-configuration)) | |
710 | ) | |
711 | ||
712 | ;; Actually terminate isearching until editing is done. | |
713 | ;; This is so that the user can do anything without failure, | |
714 | ;; like switch buffers and start another isearch, and return. | |
715 | (condition-case err | |
35a4d143 | 716 | (isearch-done t) |
08200510 RS |
717 | (exit nil)) ; was recursive editing |
718 | ||
719 | (isearch-message) ;; for read-char | |
720 | (unwind-protect | |
721 | (let* (;; Why does following read-char echo? | |
722 | ;;(echo-keystrokes 0) ;; not needed with above message | |
d94307ee | 723 | (e (let ((cursor-in-echo-area t)) |
235beb32 | 724 | (read-event))) |
08200510 RS |
725 | ;; Binding minibuffer-history-symbol to nil is a work-around |
726 | ;; for some incompatibility with gmhist. | |
727 | (minibuffer-history-symbol)) | |
728 | ;; If the first character the user types when we prompt them | |
729 | ;; for a string is the yank-word character, then go into | |
730 | ;; word-search mode. Otherwise unread that character and | |
731 | ;; read a key the normal way. | |
732 | ;; Word search does not apply (yet) to regexp searches, | |
733 | ;; no check is made here. | |
734 | (message (isearch-message-prefix nil nil t)) | |
735 | (if (eq 'isearch-yank-word | |
235beb32 | 736 | (lookup-key isearch-mode-map (vector e))) |
08200510 RS |
737 | (setq isearch-word t ;; so message-prefix is right |
738 | isearch-new-word t) | |
739 | (isearch-unread e)) | |
a5dcf63f RS |
740 | (setq cursor-in-echo-area nil) |
741 | (setq isearch-new-string | |
35a4d143 | 742 | (let (junk-ring) |
a5dcf63f RS |
743 | (read-from-minibuffer (isearch-message-prefix) |
744 | isearch-string | |
745 | minibuffer-local-isearch-map nil | |
35a4d143 | 746 | 'junk-ring)) |
08200510 RS |
747 | isearch-new-message (mapconcat 'text-char-description |
748 | isearch-new-string ""))) | |
749 | ;; Always resume isearching by restarting it. | |
750 | (isearch-mode isearch-forward | |
751 | isearch-regexp | |
752 | isearch-op-fun | |
753 | isearch-recursive-edit | |
754 | isearch-word) | |
755 | ||
756 | ;; Copy new local values to isearch globals | |
757 | (setq isearch-string isearch-new-string | |
758 | isearch-message isearch-new-message | |
759 | isearch-forward isearch-new-forward | |
760 | isearch-word isearch-new-word)) | |
761 | ||
762 | ;; Empty isearch-string means use default. | |
763 | (if (= 0 (length isearch-string)) | |
a8f783b2 RS |
764 | (setq isearch-string (car (if isearch-regexp regexp-search-ring |
765 | search-ring))) | |
766 | ;; This used to set the last search string, | |
767 | ;; but I think it is not right to do that here. | |
768 | ;; Only the string actually used should be saved. | |
769 | ) | |
08200510 RS |
770 | |
771 | ;; Reinvoke the pending search. | |
772 | (isearch-push-state) | |
773 | (isearch-search) | |
774 | (isearch-update) | |
775 | (if isearch-nonincremental | |
776 | (progn | |
777 | ;; (sit-for 1) ;; needed if isearch-done does: (message "") | |
778 | (isearch-done)))) | |
8e1cae6d | 779 | |
08200510 RS |
780 | (quit ; handle abort-recursive-edit |
781 | (isearch-abort) ;; outside of let to restore outside global values | |
782 | ))) | |
783 | ||
784 | (defun isearch-nonincremental-exit-minibuffer () | |
785 | (interactive) | |
786 | (setq isearch-nonincremental t) | |
787 | (exit-minibuffer)) | |
788 | ||
789 | (defun isearch-forward-exit-minibuffer () | |
790 | (interactive) | |
791 | (setq isearch-new-forward t) | |
792 | (exit-minibuffer)) | |
8e1cae6d | 793 | |
08200510 | 794 | (defun isearch-reverse-exit-minibuffer () |
8e1cae6d | 795 | (interactive) |
08200510 RS |
796 | (setq isearch-new-forward nil) |
797 | (exit-minibuffer)) | |
798 | ||
799 | ||
800 | (defun isearch-abort () | |
801 | "Abort incremental search mode if searching is successful, signalling quit. | |
802 | Otherwise, revert to previous successful search and continue searching. | |
803 | Use `isearch-exit' to quit without signalling." | |
804 | (interactive) | |
eb8c3be9 | 805 | ;; (ding) signal instead below, if quitting |
8e1cae6d JB |
806 | (discard-input) |
807 | (if isearch-success | |
808 | ;; If search is successful, move back to starting point | |
809 | ;; and really do quit. | |
810 | (progn (goto-char isearch-opoint) | |
35a4d143 | 811 | (isearch-done t) ; exit isearch |
a5dcf63f | 812 | (signal 'quit nil)) ; and pass on quit signal |
08200510 | 813 | ;; If search is failing, rub out until it is once more successful. |
8e1cae6d JB |
814 | (while (not isearch-success) (isearch-pop-state)) |
815 | (isearch-update))) | |
816 | ||
817 | ||
818 | (defun isearch-repeat (direction) | |
819 | ;; Utility for isearch-repeat-forward and -backward. | |
820 | (if (eq isearch-forward (eq direction 'forward)) | |
821 | ;; C-s in forward or C-r in reverse. | |
822 | (if (equal isearch-string "") | |
823 | ;; If search string is empty, use last one. | |
824 | (setq isearch-string | |
8e1cae6d | 825 | (or (if isearch-regexp |
a5dcf63f RS |
826 | (car regexp-search-ring) |
827 | (car search-ring)) | |
8e1cae6d JB |
828 | "") |
829 | isearch-message | |
08200510 | 830 | (mapconcat 'isearch-text-char-description |
8e1cae6d JB |
831 | isearch-string "")) |
832 | ;; If already have what to search for, repeat it. | |
833 | (or isearch-success | |
834 | (progn | |
835 | ||
836 | (goto-char (if isearch-forward (point-min) (point-max))) | |
837 | (setq isearch-wrapped t)))) | |
838 | ;; C-s in reverse or C-r in forward, change direction. | |
839 | (setq isearch-forward (not isearch-forward))) | |
840 | ||
841 | (setq isearch-barrier (point)) ; For subsequent \| if regexp. | |
6fefdc4b RS |
842 | |
843 | (if (equal isearch-string "") | |
844 | (setq isearch-success t) | |
845 | (if (and isearch-success (equal (match-end 0) (match-beginning 0))) | |
8e1cae6d JB |
846 | ;; If repeating a search that found |
847 | ;; an empty string, ensure we advance. | |
6fefdc4b RS |
848 | (if (if isearch-forward (eobp) (bobp)) |
849 | ;; If there's nowhere to advance to, fail (and wrap next time). | |
850 | (progn | |
851 | (setq isearch-success nil) | |
852 | (ding)) | |
853 | (forward-char (if isearch-forward 1 -1)) | |
854 | (isearch-search)) | |
855 | (isearch-search))) | |
856 | ||
8e1cae6d JB |
857 | (isearch-push-state) |
858 | (isearch-update)) | |
859 | ||
860 | (defun isearch-repeat-forward () | |
861 | "Repeat incremental search forwards." | |
862 | (interactive) | |
863 | (isearch-repeat 'forward)) | |
864 | ||
865 | (defun isearch-repeat-backward () | |
866 | "Repeat incremental search backwards." | |
867 | (interactive) | |
868 | (isearch-repeat 'backward)) | |
869 | ||
870 | (defun isearch-toggle-regexp () | |
871 | "Toggle regexp searching on or off." | |
872 | ;; The status stack is left unchanged. | |
873 | (interactive) | |
874 | (setq isearch-regexp (not isearch-regexp)) | |
08200510 | 875 | (if isearch-regexp (setq isearch-word nil)) |
8e1cae6d JB |
876 | (isearch-update)) |
877 | ||
878 | (defun isearch-delete-char () | |
879 | "Discard last input item and move point back. | |
880 | If no previous match was done, just beep." | |
881 | (interactive) | |
882 | (if (null (cdr isearch-cmds)) | |
883 | (ding) | |
884 | (isearch-pop-state)) | |
885 | (isearch-update)) | |
886 | ||
887 | ||
888 | (defun isearch-yank (chunk) | |
889 | ;; Helper for isearch-yank-word and isearch-yank-line | |
30d47262 RS |
890 | ;; CHUNK should be word, line or kill. |
891 | (let ((string (cond | |
892 | ((eq chunk 'kill) | |
893 | (current-kill 0)) | |
894 | (t | |
895 | (save-excursion | |
896 | (and (not isearch-forward) isearch-other-end | |
897 | (goto-char isearch-other-end)) | |
898 | (buffer-substring | |
899 | (point) | |
900 | (save-excursion | |
901 | (cond | |
902 | ((eq chunk 'word) | |
903 | (forward-word 1)) | |
904 | ((eq chunk 'line) | |
905 | (end-of-line))) | |
906 | (point)))))))) | |
08200510 RS |
907 | ;; Downcase the string if not supposed to case-fold yanked strings. |
908 | (if (and isearch-case-fold-search | |
fdf5afa4 | 909 | (eq 'not-yanks search-upper-case)) |
08200510 RS |
910 | (setq string (downcase string))) |
911 | (if isearch-regexp (setq string (regexp-quote string))) | |
912 | (setq isearch-string (concat isearch-string string) | |
8e1cae6d JB |
913 | isearch-message |
914 | (concat isearch-message | |
08200510 RS |
915 | (mapconcat 'isearch-text-char-description |
916 | string "")) | |
8e1cae6d JB |
917 | ;; Don't move cursor in reverse search. |
918 | isearch-yank-flag t)) | |
919 | (isearch-search-and-update)) | |
920 | ||
30d47262 RS |
921 | (defun isearch-yank-kill () |
922 | "Pull string from kill ring into search string." | |
923 | (interactive) | |
924 | (isearch-yank 'kill)) | |
8e1cae6d JB |
925 | |
926 | (defun isearch-yank-word () | |
927 | "Pull next word from buffer into search string." | |
928 | (interactive) | |
929 | (isearch-yank 'word)) | |
930 | ||
931 | (defun isearch-yank-line () | |
932 | "Pull rest of line from buffer into search string." | |
933 | (interactive) | |
934 | (isearch-yank 'line)) | |
935 | ||
936 | ||
937 | (defun isearch-search-and-update () | |
938 | ;; Do the search and update the display. | |
939 | (if (and (not isearch-success) | |
940 | ;; unsuccessful regexp search may become | |
941 | ;; successful by addition of characters which | |
942 | ;; make isearch-string valid | |
943 | (not isearch-regexp)) | |
944 | nil | |
945 | ;; In reverse search, adding stuff at | |
946 | ;; the end may cause zero or many more chars to be | |
947 | ;; matched, in the string following point. | |
948 | ;; Allow all those possibilities without moving point as | |
949 | ;; long as the match does not extend past search origin. | |
950 | (if (and (not isearch-forward) (not isearch-adjusted) | |
951 | (condition-case () | |
952 | (looking-at (if isearch-regexp isearch-string | |
953 | (regexp-quote isearch-string))) | |
954 | (error nil)) | |
955 | (or isearch-yank-flag | |
956 | (<= (match-end 0) | |
957 | (min isearch-opoint isearch-barrier)))) | |
958 | (setq isearch-success t | |
959 | isearch-invalid-regexp nil | |
c5f6b356 | 960 | isearch-within-brackets nil |
8e1cae6d JB |
961 | isearch-other-end (match-end 0)) |
962 | ;; Not regexp, not reverse, or no match at point. | |
963 | (if (and isearch-other-end (not isearch-adjusted)) | |
964 | (goto-char (if isearch-forward isearch-other-end | |
965 | (min isearch-opoint | |
966 | isearch-barrier | |
967 | (1+ isearch-other-end))))) | |
968 | (isearch-search) | |
969 | )) | |
970 | (isearch-push-state) | |
971 | (if isearch-op-fun (funcall isearch-op-fun)) | |
972 | (isearch-update)) | |
973 | ||
974 | ||
975 | ;; *, ?, and | chars can make a regexp more liberal. | |
08200510 | 976 | ;; They can make a regexp match sooner or make it succeed instead of failing. |
8e1cae6d JB |
977 | ;; So go back to place last successful search started |
978 | ;; or to the last ^S/^R (barrier), whichever is nearer. | |
08200510 | 979 | ;; + needs no special handling because the string must match at least once. |
8e1cae6d JB |
980 | |
981 | (defun isearch-*-char () | |
982 | "Handle * and ? specially in regexps." | |
983 | (interactive) | |
984 | (if isearch-regexp | |
985 | ||
986 | (progn | |
987 | (setq isearch-adjusted t) | |
988 | (let ((cs (nth (if isearch-forward | |
989 | 5 ; isearch-other-end | |
990 | 2) ; saved (point) | |
991 | (car (cdr isearch-cmds))))) | |
992 | ;; (car isearch-cmds) is after last search; | |
993 | ;; (car (cdr isearch-cmds)) is from before it. | |
994 | (setq cs (or cs isearch-barrier)) | |
995 | (goto-char | |
996 | (if isearch-forward | |
997 | (max cs isearch-barrier) | |
998 | (min cs isearch-barrier)))))) | |
08200510 | 999 | (isearch-process-search-char (isearch-last-command-char))) |
8e1cae6d JB |
1000 | |
1001 | ||
8e1cae6d JB |
1002 | (defun isearch-|-char () |
1003 | "If in regexp search, jump to the barrier." | |
1004 | (interactive) | |
1005 | (if isearch-regexp | |
1006 | (progn | |
1007 | (setq isearch-adjusted t) | |
1008 | (goto-char isearch-barrier))) | |
08200510 | 1009 | (isearch-process-search-char (isearch-last-command-char))) |
8e1cae6d JB |
1010 | |
1011 | ||
b457cc3b | 1012 | (defalias 'isearch-other-control-char 'isearch-other-meta-char) |
8e1cae6d JB |
1013 | |
1014 | (defun isearch-other-meta-char () | |
8f90f594 | 1015 | "Exit the search normally and reread this key sequence. |
35a4d143 RS |
1016 | But only if `search-exit-option' is non-nil, the default. |
1017 | If it is the symbol `edit', the search string is edited in the minibuffer | |
1018 | and the meta character is unread so that it applies to editing the string." | |
8e1cae6d | 1019 | (interactive) |
35a4d143 RS |
1020 | (cond ((eq search-exit-option 'edit) |
1021 | (let ((key (this-command-keys))) | |
e7cb0106 | 1022 | (apply 'isearch-unread (listify-key-sequence key))) |
35a4d143 RS |
1023 | (isearch-edit-string)) |
1024 | (search-exit-option | |
70418205 | 1025 | (let ((key (this-command-keys)) |
285eb5ef | 1026 | (index 0) |
70418205 RS |
1027 | window) |
1028 | (apply 'isearch-unread (listify-key-sequence key)) | |
285eb5ef RS |
1029 | ;; Properly handle scroll-bar and mode-line clicks |
1030 | ;; for which a dummy prefix event was generated as (aref key 0). | |
1031 | (and (> (length key) 1) | |
1032 | (symbolp (aref key 0)) | |
1033 | (listp (aref key 1)) | |
4b43d418 RS |
1034 | ;; These events now have a symbol; they used to have a list. |
1035 | ;; Accept either one. Other events have a number here. | |
1036 | (not (numberp (posn-point (event-start (aref key 1))))) | |
285eb5ef | 1037 | (setq index 1)) |
70418205 RS |
1038 | ;; If we got a mouse click, maybe it was read with the buffer |
1039 | ;; it was clicked on. If so, that buffer, not the current one, | |
1040 | ;; is in isearch mode. So end the search in that buffer. | |
285eb5ef RS |
1041 | (if (and (listp (aref key index)) |
1042 | (setq window (posn-window (event-start (aref key index)))) | |
70418205 RS |
1043 | (windowp window)) |
1044 | (save-excursion | |
1045 | (set-buffer (window-buffer window)) | |
1046 | (isearch-done)) | |
1047 | (isearch-done)))) | |
35a4d143 RS |
1048 | (t;; otherwise nil |
1049 | (isearch-process-search-string (this-command-keys) | |
1050 | (this-command-keys))))) | |
8e1cae6d | 1051 | |
8e1cae6d JB |
1052 | (defun isearch-quote-char () |
1053 | "Quote special characters for incremental search." | |
1054 | (interactive) | |
1055 | (isearch-process-search-char (read-quoted-char (isearch-message t)))) | |
1056 | ||
8e1cae6d JB |
1057 | (defun isearch-return-char () |
1058 | "Convert return into newline for incremental search. | |
1059 | Obsolete." | |
1060 | (interactive) | |
1061 | (isearch-process-search-char ?\n)) | |
1062 | ||
8e1cae6d | 1063 | (defun isearch-printing-char () |
b68c164d | 1064 | "Add this ordinary printing character to the search string and search." |
8e1cae6d | 1065 | (interactive) |
08200510 | 1066 | (isearch-process-search-char (isearch-last-command-char))) |
8e1cae6d JB |
1067 | |
1068 | (defun isearch-whitespace-chars () | |
08200510 | 1069 | "Match all whitespace chars, if in regexp mode. |
b68c164d | 1070 | If you want to search for just a space, type C-q SPC." |
8e1cae6d | 1071 | (interactive) |
08200510 | 1072 | (if isearch-regexp |
c5f6b356 | 1073 | (if (and search-whitespace-regexp (not isearch-within-brackets)) |
08200510 RS |
1074 | (isearch-process-search-string search-whitespace-regexp " ") |
1075 | (isearch-printing-char)) | |
1076 | (progn | |
eb8c3be9 | 1077 | ;; This way of doing word search doesn't correctly extend current search. |
08200510 RS |
1078 | ;; (setq isearch-word t) |
1079 | ;; (setq isearch-adjusted t) | |
1080 | ;; (goto-char isearch-barrier) | |
1081 | (isearch-printing-char)))) | |
8e1cae6d JB |
1082 | |
1083 | (defun isearch-process-search-char (char) | |
1084 | ;; Append the char to the search string, update the message and re-search. | |
08200510 RS |
1085 | (isearch-process-search-string |
1086 | (isearch-char-to-string char) | |
1087 | (isearch-text-char-description char))) | |
8e1cae6d JB |
1088 | |
1089 | (defun isearch-process-search-string (string message) | |
1090 | (setq isearch-string (concat isearch-string string) | |
1091 | isearch-message (concat isearch-message message)) | |
1092 | (isearch-search-and-update)) | |
1093 | ||
1094 | \f | |
1095 | ;;=========================================================== | |
1096 | ;; Search Ring | |
1097 | ||
08200510 RS |
1098 | (defun isearch-ring-adjust1 (advance) |
1099 | ;; Helper for isearch-ring-adjust | |
1100 | (let* ((ring (if isearch-regexp regexp-search-ring search-ring)) | |
8e1cae6d JB |
1101 | (length (length ring)) |
1102 | (yank-pointer-name (if isearch-regexp | |
08200510 | 1103 | 'regexp-search-ring-yank-pointer |
8e1cae6d JB |
1104 | 'search-ring-yank-pointer)) |
1105 | (yank-pointer (eval yank-pointer-name))) | |
1106 | (if (zerop length) | |
1107 | () | |
1108 | (set yank-pointer-name | |
1109 | (setq yank-pointer | |
ffbc30b2 PE |
1110 | (mod (+ (or yank-pointer 0) |
1111 | (if advance -1 1)) | |
1112 | length))) | |
a5dcf63f | 1113 | (setq isearch-string (nth yank-pointer ring) |
08200510 RS |
1114 | isearch-message (mapconcat 'isearch-text-char-description |
1115 | isearch-string ""))))) | |
1116 | ||
1117 | (defun isearch-ring-adjust (advance) | |
1118 | ;; Helper for isearch-ring-advance and isearch-ring-retreat | |
1119 | (if (cdr isearch-cmds) ;; is there more than one thing on stack? | |
1120 | (isearch-pop-state)) | |
1121 | (isearch-ring-adjust1 advance) | |
8e1cae6d | 1122 | (isearch-push-state) |
08200510 RS |
1123 | (if search-ring-update |
1124 | (progn | |
1125 | (isearch-search) | |
1126 | (isearch-update)) | |
1127 | (isearch-edit-string) | |
1128 | )) | |
8e1cae6d JB |
1129 | |
1130 | (defun isearch-ring-advance () | |
1131 | "Advance to the next search string in the ring." | |
08200510 | 1132 | ;; This could be more general to handle a prefix arg, but who would use it. |
8e1cae6d JB |
1133 | (interactive) |
1134 | (isearch-ring-adjust 'advance)) | |
1135 | ||
1136 | (defun isearch-ring-retreat () | |
1137 | "Retreat to the previous search string in the ring." | |
1138 | (interactive) | |
1139 | (isearch-ring-adjust nil)) | |
1140 | ||
a5dcf63f RS |
1141 | (defun isearch-ring-advance-edit (n) |
1142 | "Insert the next element of the search history into the minibuffer." | |
1143 | (interactive "p") | |
1144 | (let* ((yank-pointer-name (if isearch-regexp | |
1145 | 'regexp-search-ring-yank-pointer | |
1146 | 'search-ring-yank-pointer)) | |
1147 | (yank-pointer (eval yank-pointer-name)) | |
1148 | (ring (if isearch-regexp regexp-search-ring search-ring)) | |
1149 | (length (length ring))) | |
1150 | (if (zerop length) | |
1151 | () | |
1152 | (set yank-pointer-name | |
1153 | (setq yank-pointer | |
ffbc30b2 PE |
1154 | (mod (- (or yank-pointer 0) n) |
1155 | length))) | |
a5dcf63f | 1156 | |
a5dcf63f | 1157 | (erase-buffer) |
35a4d143 | 1158 | (insert (nth yank-pointer ring)) |
49c13105 | 1159 | (goto-char (point-max))))) |
a5dcf63f RS |
1160 | |
1161 | (defun isearch-ring-retreat-edit (n) | |
1162 | "Inserts the previous element of the search history into the minibuffer." | |
1163 | (interactive "p") | |
1164 | (isearch-ring-advance-edit (- n))) | |
1165 | ||
1166 | ;;(defun isearch-ring-adjust-edit (advance) | |
1167 | ;; "Use the next or previous search string in the ring while in minibuffer." | |
1168 | ;; (isearch-ring-adjust1 advance) | |
1169 | ;; (erase-buffer) | |
1170 | ;; (insert isearch-string)) | |
1171 | ||
1172 | ;;(defun isearch-ring-advance-edit () | |
1173 | ;; (interactive) | |
1174 | ;; (isearch-ring-adjust-edit 'advance)) | |
1175 | ||
1176 | ;;(defun isearch-ring-retreat-edit () | |
1177 | ;; "Retreat to the previous search string in the ring while in the minibuffer." | |
1178 | ;; (interactive) | |
1179 | ;; (isearch-ring-adjust-edit nil)) | |
08200510 RS |
1180 | |
1181 | ||
1182 | (defun isearch-complete1 () | |
1183 | ;; Helper for isearch-complete and isearch-complete-edit | |
1184 | ;; Return t if completion OK, nil if no completion exists. | |
1185 | (let* ((ring (if isearch-regexp regexp-search-ring search-ring)) | |
1186 | (alist (mapcar (function (lambda (string) (list string))) ring)) | |
1187 | (completion-ignore-case case-fold-search) | |
1188 | (completion (try-completion isearch-string alist))) | |
1189 | (cond | |
1190 | ((eq completion t) | |
1191 | ;; isearch-string stays the same | |
1192 | t) | |
1193 | ((or completion ; not nil, must be a string | |
1194 | (= 0 (length isearch-string))) ; shouldnt have to say this | |
1195 | (if (equal completion isearch-string) ;; no extension? | |
1196 | (if completion-auto-help | |
1197 | (with-output-to-temp-buffer "*Isearch completions*" | |
1198 | (display-completion-list | |
1199 | (all-completions isearch-string alist)))) | |
1200 | (setq isearch-string completion)) | |
1201 | t) | |
1202 | (t | |
1203 | (message "No completion") ; waits a second if in minibuffer | |
1204 | nil)))) | |
1205 | ||
1206 | (defun isearch-complete () | |
1207 | "Complete the search string from the strings on the search ring. | |
1208 | The completed string is then editable in the minibuffer. | |
1209 | If there is no completion possible, say so and continue searching." | |
1210 | (interactive) | |
1211 | (if (isearch-complete1) | |
1212 | (isearch-edit-string) | |
1213 | ;; else | |
1214 | (sit-for 1) | |
1215 | (isearch-update))) | |
8e1cae6d | 1216 | |
08200510 RS |
1217 | (defun isearch-complete-edit () |
1218 | "Same as `isearch-complete' except in the minibuffer." | |
1219 | (interactive) | |
1220 | (setq isearch-string (buffer-string)) | |
1221 | (if (isearch-complete1) | |
8e1cae6d | 1222 | (progn |
08200510 RS |
1223 | (erase-buffer) |
1224 | (insert isearch-string)))) | |
8e1cae6d JB |
1225 | |
1226 | \f | |
1227 | ;;;============================================================== | |
1228 | ;; The search status stack (and isearch window-local variables, not used). | |
08200510 | 1229 | ;; Need a structure for this. |
8e1cae6d JB |
1230 | |
1231 | (defun isearch-top-state () | |
8e1cae6d JB |
1232 | (let ((cmd (car isearch-cmds))) |
1233 | (setq isearch-string (car cmd) | |
1234 | isearch-message (car (cdr cmd)) | |
1235 | isearch-success (nth 3 cmd) | |
1236 | isearch-forward (nth 4 cmd) | |
1237 | isearch-other-end (nth 5 cmd) | |
08200510 RS |
1238 | isearch-word (nth 6 cmd) |
1239 | isearch-invalid-regexp (nth 7 cmd) | |
1240 | isearch-wrapped (nth 8 cmd) | |
c5f6b356 | 1241 | isearch-barrier (nth 9 cmd) |
f551b97d RS |
1242 | isearch-within-brackets (nth 10 cmd) |
1243 | isearch-case-fold-search (nth 11 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 | 1256 | isearch-invalid-regexp isearch-wrapped isearch-barrier |
f551b97d | 1257 | isearch-within-brackets isearch-case-fold-search) |
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) |
f5f6a944 | 1362 | (if (or (null search-highlight) (null window-system)) |
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 |