1 ;;; isearch.el --- incremental search minor mode.
3 ;; Copyright (C) 1992 Free Software Foundation, Inc.
5 ;; Author: Daniel LaLiberte <liberte@cs.uiuc.edu>
7 ;; |$Date: 1993/03/30 19:42:10 $|$Revision: 1.29 $
9 ;; This file is not yet part of GNU Emacs, but it is based almost
10 ;; entirely on isearch.el which is part of GNU Emacs.
12 ;; GNU Emacs is distributed in the hope that it will be useful,
13 ;; but WITHOUT ANY WARRANTY. No author or distributor
14 ;; accepts responsibility to anyone for the consequences of using it
15 ;; or for whether it serves any particular purpose or works at all,
16 ;; unless he says so in writing. Refer to the GNU Emacs General Public
17 ;; License for full details.
19 ;; Everyone is granted permission to copy, modify and redistribute
20 ;; GNU Emacs, but only under the conditions described in the
21 ;; GNU Emacs General Public License. A copy of this license is
22 ;; supposed to have been given to you along with GNU Emacs so you
23 ;; can know your rights and responsibilities. It should be in a
24 ;; file named COPYING. Among other things, the copyright notice
25 ;; and this notice must be preserved on all copies.
29 ;;;====================================================================
32 ;; Searching with isearch-mode.el should work just like isearch.el,
33 ;; except it is done in a temporary minor mode that terminates when
34 ;; you finish searching.
36 ;; To use isearch-mode instead of the standard isearch.el, add the
37 ;; following to your .emacs file. The standard key bindings to
38 ;; isearch-forward, etc, will then use isearch-mode instead of
41 ;; (fset 'isearch 'isearch-mode)
42 ;; (autoload 'isearch-mode "isearch-mode")
44 ;; For programmed use of isearch-mode, e.g. calling (isearch-forward),
45 ;; isearch-mode behaves modally and does not return until the search
46 ;; is completed. It uses a recursive-edit to behave this way. Note:
47 ;; gnus does it wrong: (call-interactively 'isearch-forward).
49 ;; If any package you use invokes isearching non-interactively to get
50 ;; the modal behavior described above, you must use the redefinitions
51 ;; of isearch-forward, etc. found in this file instead of those in
52 ;; loaddefs.el. The simplest way to ensure this is to just load
53 ;; isearch-mode explicitly in your .emacs instead of using the above
56 ;; (load "isearch-mode")
58 ;; The key bindings active within isearch-mode are defined below in
59 ;; `isearch-mode-map' which is given bindings close to the default
60 ;; characters of the original isearch.el. With `isearch-mode',
61 ;; however, you can bind multi-character keys and it should be easier
62 ;; to add new commands. One bug though: keys with meta-prefix cannot
63 ;; be longer than two chars. Also see minibuffer-local-isearch-map
64 ;; for bindings active during `isearch-edit-string'.
66 ;; Note to emacs version 19 users: isearch-mode should work even if
67 ;; you switch windows with the mouse, in which case isearch-mode is
68 ;; terminated automatically before the switch. This is true of lemacs
69 ;; too, with a few more cleanups I've neglected in this release.
70 ;; No one has supplied patches for epoch yet.
72 ;; The search ring and completion commands automatically put you in
73 ;; the minibuffer to edit the string. This gives you a chance to
74 ;; modify the search string before executing the search. There are
75 ;; three commands to terminate the editing: C-s and C-r exit the
76 ;; minibuffer and search forward and reverse respectively, while C-m
77 ;; exits and does a nonincremental search.
79 ;; Exiting immediately from isearch uses isearch-edit-string instead
80 ;; of nonincremental-search, if search-nonincremental-instead is non-nil.
81 ;; The name of this option should probably be changed if we decide to
82 ;; keep the behavior. No point in forcing nonincremental search until
83 ;; the last possible moment.
86 ;; - Integrate the emacs 19 generalized commmand history.
87 ;; - Think about incorporating query-replace.
88 ;; - Hooks and options for failed search.
92 ;;;====================================================================
95 ;;; $Header: /gd/gnu/emacs/19.0/lisp/RCS/isearch.el,v 1.29 1993/03/30 19:42:10 rms Exp rms $
96 ;;; $Log: isearch.el,v $
97 ; Revision 1.29 1993/03/30 19:42:10 rms
98 ; (isearch-done): Customize the message about mark.
100 ; Revision 1.28 1993/03/30 19:38:34 rms
101 ; (isearch-mode-map): Delete the binding for C-h.
103 ; Revision 1.27 1993/03/21 05:50:17 jimb
104 ; * isearch.el (isearch-switch-frame-handler): Call
105 ; handle-switch-frame instead of select-frame; it has been renamed.
107 ; Revision 1.26 1993/03/17 17:17:05 eric
108 ; Add standard library headers.
110 ; Revision 1.25 1993/03/17 16:44:50 eric
111 ; Add standard library headers.
113 ; Revision 1.24 1993/03/17 15:58:09 eric
114 ; Add standard library headers.
116 ; Revision 1.23 1993/03/07 20:17:27 rms
117 ; (isearch-other-meta-char): Call listify-key-sequence.
118 ; (isearch-unread): Don't call it here.
119 ; (isearch-mode-map): Bind the ASCII-equivalent function keys.
121 ; Revision 1.22 1993/03/07 08:43:57 rms
122 ; (isearch-mode): Don't make a pre-command-hook.
124 ; Revision 1.21 1993/03/07 04:22:00 rms
125 ; (isearch-unread): Find last list element by hand.
127 ; Revision 1.20 1993/03/06 06:15:05 rms
128 ; (isearch-unread): Handle multiple args.
129 ; For Emacs 19, use listify-key-sequence.
130 ; If not Emacs 19, assume they are a meta sequence.
131 ; (isearch-other-meta-char): Pass the whole key sequence.
132 ; (isearch-other-control-char): Make this alias for ...-meta-char.
134 ; Revision 1.19 1993/02/17 21:30:25 rms
135 ; Fix minor bugs in previous change.
137 ; Revision 1.18 1993/02/17 20:34:20 rms
138 ; (isearch-backward-regexp):
139 ; New arg no-recursive-edit, always non-nil for interactive call.
140 ; Rename first arg, and set it right in interactive call.
141 ; (isearch-forward-regexp): Likewise.
142 ; (isearch-forward, isearch-backward): Likewise no-recursive-edit.
144 ; Revision 1.17 1993/01/26 01:48:27 jimb
145 ; JimB's changes since January 18th
147 ; Revision 1.16 1992/11/16 01:37:06 jimb
148 ; * bytecomp.el: Declare unread-command-char an obsolete variable.
149 ; * vip.el (vip-escape-to-emacs, vip-prefix-arg-value,
150 ; vip-prefix-arg-com): Use unread-command-event instead of
151 ; unread-command-char; respect its new semantics.
152 ; * isearch-mode.el (isearch-update, isearch-unread): Same.
154 ; Revision 1.15 1992/11/07 06:17:04 jimb
155 ; * isearch.el (isearch-frames-exist): This isn't what we want -
157 ; (isearch-gnu-emacs-events): non-nil if should expect events in the
158 ; style generated by GNU Emacs 19. Set if set-frame-height is
159 ; fboundp; this is true on any GNU Emacs 19, whether or not it was
160 ; compiled with multiple frame support.
161 ; (isearch-mode-map): Test isearch-gnu-emacs-events instead of
162 ; isearch-frames-exist to see if we should bind switch-frame events.
163 ; (isearch-update): Test isearch-gnu-emacs-events instead of
164 ; isearch-frames-exist to see if unread-command-char's quiescent
165 ; value is nil or -1.
167 ; Revision 1.14 1992/11/01 22:10:59 rms
168 ; (isearch-search): Handle all sorts of errors from regexp search.
170 ; Revision 1.13 1992/10/27 04:11:46 rms
171 ; (isearch-edit-string):
172 ; Bind cursor-in-echo-area only around read-char/allocate-event.
174 ; Revision 1.12 1992/10/20 21:21:47 rms
175 ; (isearch-mode-map): Make the top-level keymap dense.
176 ; Explicitly bind control characters at that level.
178 ; Revision 1.11 1992/10/11 05:25:11 rms
179 ; (isearch-ring-advance-edit): Delete spurious `)'.
181 ; Revision 1.10 1992/09/21 08:28:43 rms
184 ;;; Revision 1.4 92/09/14 16:26:02 liberte
185 ;;; Added prefix args to isearch-forward, etc. to switch between
186 ;;; string and regular expression searching.
187 ;;; Added some support for lemacs.
188 ;;; Added general isearch-highlight option - but only for lemacs so far.
189 ;;; Added support for frame switching in emacs 19.
190 ;;; Added word search option to isearch-edit-string.
191 ;;; Renamed isearch-quit to isearch-abort.
192 ;;; Numerous changes to comments and doc strings.
194 ;;; Revision 1.3 92/06/29 13:10:08 liberte
195 ;;; Moved modal isearch-mode handling into isearch-mode.
196 ;;; Got rid of buffer-local isearch variables.
197 ;;; isearch-edit-string used by ring adjustments, completion, and
198 ;;; nonincremental searching. C-s and C-r are additional exit commands.
199 ;;; Renamed all regex to regexp.
200 ;;; Got rid of found-start and found-point globals.
201 ;;; Generalized handling of upper-case chars.
203 ;;; Revision 1.2 92/05/27 11:33:57 liberte
204 ;;; Emacs version 19 has a search ring, which is supported here.
205 ;;; Other fixes found in the version 19 isearch are included here.
207 ;;; Also see variables search-caps-disable-folding,
208 ;;; search-nonincremental-instead, search-whitespace-regexp, and
209 ;;; commands isearch-toggle-regexp, isearch-edit-string.
211 ;;; semi-modal isearching is supported.
214 ;;; 3/18/92 Fixed invalid-regexp.
215 ;;; 3/18/92 Fixed yanking in regexps.
220 ;;;=========================================================================
223 ;; isearch-mode takes advantage of the features provided by several
224 ;; different versions of emacs. Rather than testing the version of
225 ;; emacs, several constants are defined, one for each of the features.
226 ;; Each of the tests below must work on any version of emacs.
227 ;; (Perhaps provide and featurep could be used for this purpose.)
229 (defconst isearch-gnu-emacs-events
(fboundp 'set-frame-height
)) ;; emacs 19
230 (defconst isearch-pre-command-hook-exists
(boundp 'pre-command-hook
)) ;; lemacs
231 (defconst isearch-event-data-type nil
) ;; lemacs
233 (defconst search-exit-option t
234 "*Non-nil means random control characters terminate incremental search.")
236 (defvar search-slow-window-lines
1
237 "*Number of lines in slow search display windows.
238 These are the short windows used during incremental search on slow terminals.
239 Negative means put the slow search window at the top (normally it's at bottom)
240 and the value is minus the number of lines.")
242 (defvar search-slow-speed
1200
243 "*Highest terminal speed at which to use \"slow\" style incremental search.
244 This is the style where a one-line window is created to show the line
245 that the search has reached.")
247 ;;;========================================================================
248 ;;; Some additional options and constants.
250 (defvar search-upper-case t
251 "*If non-nil, upper case chars disable case fold searching.
252 That is, upper and lower case chars must match exactly.
253 This applies no matter where the chars come from, but does not
254 apply to chars in regexps that are prefixed with `\\'.
255 If this value is `not-yanks', yanked text is always downcased.")
257 (defvar search-nonincremental-instead t
258 "*If non-nil, do a nonincremental search instead if exiting immediately.
259 Actually, `isearch-edit-string' is called to let you enter the search
260 string, and RET terminates editing and does a nonincremental search.")
262 (defconst search-whitespace-regexp
"\\s-+"
263 "*If non-nil, regular expression to match a sequence of whitespace chars.
264 You might want to use something like \"[ \\t\\r\\n]+\" instead.")
266 ;; I removed the * from the doc string because highlighting is not
267 ;; currently a clean thing to do. Once highlighting is made clean,
268 ;; this feature can be re-enabled and advertised.
269 (defvar search-highlight nil
270 "Whether isearch and query-replace should highlight the text which
271 currently matches the search-string.")
274 (defvar isearch-mode-hook nil
275 "Function(s) to call after starting up an incremental search.")
277 (defvar isearch-mode-end-hook nil
278 "Function(s) to call after terminating an incremental search.")
280 ;;;==================================================================
283 (defvar search-ring nil
284 "List of search string sequences.")
285 (defvar regexp-search-ring nil
286 "List of regular expression search string sequences.")
288 (defconst search-ring-max
16
289 "*Maximum length of search ring before oldest elements are thrown away.")
290 (defconst regexp-search-ring-max
16
291 "*Maximum length of regexp search ring before oldest elements are thrown away.")
293 (defvar search-ring-yank-pointer nil
294 "Index in `search-ring' of last string reused.
296 (defvar regexp-search-ring-yank-pointer nil
297 "Index in `regexp-search-ring' of last string reused.
300 (defvar search-ring-update nil
301 "*Non-nil if advancing or retreating in the search ring should cause search.
302 Default value, nil, means edit the string instead.")
304 ;;;====================================================
305 ;;; Define isearch-mode keymap.
307 (defvar isearch-mode-map nil
308 "Keymap for isearch-mode.")
314 ;; Make function keys, etc, exit the search.
315 (define-key map
[t] 'isearch-other-control-char)
316 ;; Control chars, by default, end isearch mode transparently.
317 ;; We need these explicit definitions because, in a dense keymap,
318 ;; the binding for t does not affect characters.
319 ;; We use a dense keymap to save space.
321 (define-key map (make-string 1 i) 'isearch-other-control-char)
324 ;; Printing chars extend the selection by default.
327 (define-key map (make-string 1 i) 'isearch-printing-char)
330 ;; Several non-printing chars change the searching behavior.
331 (define-key map "\C-s" 'isearch-repeat-forward)
332 (define-key map "\C-r" 'isearch-repeat-backward)
333 (define-key map "\177" 'isearch-delete-char)
334 (define-key map "\C-g" 'isearch-abort)
336 (define-key map "\C-q" 'isearch-quote-char)
338 (define-key map "\r" 'isearch-exit)
339 (define-key map "\C-j" 'isearch-printing-char)
340 (define-key map "\t" 'isearch-printing-char)
341 (define-key map " " 'isearch-whitespace-chars)
343 (define-key map "\C-w" 'isearch-yank-word)
344 (define-key map "\C-y" 'isearch-yank-line)
346 ;; Bind the ASCII-equivalent "function keys" explicitly
347 ;; if we bind their equivalents,
348 ;; since otherwise the default binding would override.
349 ;; We bind [escape] below.
350 (define-key map [tab] 'isearch-printing-char)
351 (define-key map [delete] 'isearch-delete-char)
352 (define-key map [backspace] 'isearch-delete-char)
353 (define-key map [return] 'isearch-exit)
354 (define-key map [newline] 'isearch-printing-char)
356 ;; Define keys for regexp chars * ? |.
357 ;; Nothing special for + because it matches at least once.
358 (define-key map "*" 'isearch-*-char)
359 (define-key map "?" 'isearch-*-char)
360 (define-key map "|" 'isearch-|-char)
362 ;;; Turned off because I find I expect to get the global definition--rms.
363 ;;; ;; Instead bind C-h to special help command for isearch-mode.
364 ;;; (define-key map "\C-h" 'isearch-mode-help)
366 ;; To handle local bindings with meta char prefix keys, define
367 ;; another full keymap. This must be done for any other prefix
368 ;; keys as well, one full keymap per char of the prefix key. It
369 ;; would be simpler to disable the global keymap, and/or have a
370 ;; default local key binding for any key not otherwise bound.
371 (let ((meta-map (make-sparse-keymap)))
372 (define-key map (char-to-string meta-prefix-char) meta-map)
373 (define-key map [escape] meta-map))
374 (define-key map (vector meta-prefix-char t) 'isearch-other-meta-char)
376 (define-key map "\M-n" 'isearch-ring-advance)
377 (define-key map "\M-p" 'isearch-ring-retreat)
379 (define-key map "\M-\t" 'isearch-complete)
381 ;; For emacs 19, switching frames should terminate isearch-mode
382 (if isearch-gnu-emacs-events
383 (define-key map [switch-frame] 'isearch-switch-frame-handler))
385 (setq isearch-mode-map map)
388 ;; Some bindings you may want to put in your isearch-mode-hook.
389 ;; Suggest some alternates...
390 ;; (define-key isearch-mode-map "\C-t" 'isearch-toggle-regexp)
391 ;; (define-key isearch-mode-map "\C-^" 'isearch-edit-string)
394 (defvar minibuffer-local-isearch-map nil
395 "Keymap for editing isearch strings in the minibuffer.")
397 (or minibuffer-local-isearch-map
398 (let ((map (copy-keymap minibuffer-local-map)))
399 (define-key map "\r" 'isearch-nonincremental-exit-minibuffer)
400 (define-key map "\M-n" 'isearch-ring-advance-edit)
401 (define-key map "\M-p" 'isearch-ring-retreat-edit)
402 (define-key map "\M-\t" 'isearch-complete-edit)
403 (define-key map "\C-s" 'isearch-forward-exit-minibuffer)
404 (define-key map "\C-r" 'isearch-reverse-exit-minibuffer)
405 (setq minibuffer-local-isearch-map map)
408 ;;;========================================================
409 ;; Internal variables declared globally for byte-compiler.
410 ;; These are all set with setq while isearching
411 ;; and bound locally while editing the search string.
413 (defvar isearch-forward nil) ; Searching in the forward direction.
414 (defvar isearch-regexp nil) ; Searching for a regexp.
415 (defvar isearch-word nil) ; Searching for words.
417 (defvar isearch-cmds nil) ; Stack of search status sets.
418 (defvar isearch-string "") ; The current search string.
419 (defvar isearch-message "") ; text-char-description version of isearch-string
421 (defvar isearch-success t) ; Searching is currently successful.
422 (defvar isearch-invalid-regexp nil) ; Regexp not well formed.
423 (defvar isearch-other-end nil) ; Start (end) of match if forward (backward).
424 (defvar isearch-wrapped nil) ; Searching restarted from the top (bottom).
425 (defvar isearch-barrier 0)
427 (defvar isearch-case-fold-search nil) ; case-fold-search while searching.
429 (defvar isearch-adjusted nil)
430 (defvar isearch-slow-terminal-mode nil)
431 ;;; If t, using a small window.
432 (defvar isearch-small-window nil)
433 (defvar isearch-opoint 0)
434 ;;; The window configuration active at the beginning of the search.
435 (defvar isearch-window-configuration nil)
436 (defvar isearch-old-local-map nil)
438 ;; Flag to indicate a yank occurred, so don't move the cursor.
439 (defvar isearch-yank-flag nil)
441 ;;; A function to be called after each input character is processed.
442 ;;; (It is not called after characters that exit the search.)
443 ;;; It is only set from an optional argument to `isearch-mode'.
444 (defvar isearch-op-fun nil)
446 ;;; Is isearch-mode in a recursive edit for modal searching.
447 (defvar isearch-recursive-edit nil)
449 ;;; Should isearch be terminated after doing one search?
450 (defvar isearch-nonincremental nil)
452 ;; New value of isearch-forward after isearch-edit-string.
453 (defvar isearch-new-forward nil)
456 ;;;==============================================================
457 ;; Minor-mode-alist changes - kind of redundant with the
458 ;; echo area, but if isearching in multiple windows, it can be useful.
460 (or (assq 'isearch-mode minor-mode-alist)
461 (nconc minor-mode-alist
462 (list '(isearch-mode isearch-mode))))
464 (defvar isearch-mode nil) ;; Name of the minor mode, if non-nil.
465 (make-variable-buffer-local 'isearch-mode)
467 (define-key global-map "\C-s" 'isearch-forward)
468 (define-key esc-map "\C-s" 'isearch-forward-regexp)
469 (define-key global-map "\C-r" 'isearch-backward)
470 (define-key esc-map "\C-r" 'isearch-backward-regexp)
472 ;;;===============================================================
473 ;;; Entry points to isearch-mode.
474 ;;; These four functions should replace those in loaddefs.el
475 ;;; An alternative is to fset isearch-forward etc to isearch-mode,
476 ;;; and look at this-command to set the options accordingly.
478 (defun isearch-forward (&optional regexp-p no-recursive-edit)
480 Do incremental search forward.
481 With a prefix argument, do an incremental regular expression search instead.
483 As you type characters, they add to the search string and are found.
484 The following non-printing keys are bound in `isearch-mode-map'.
486 Type \\[isearch-delete-char] to cancel characters from end of search string.
487 Type \\[isearch-exit] to exit, leaving point at location found.
488 Type LFD (C-j) to match end of line.
489 Type \\[isearch-repeat-forward] to search again forward,\
490 \\[isearch-repeat-backward] to search again backward.
491 Type \\[isearch-yank-word] to yank word from buffer onto end of search\
492 string and search for it.
493 Type \\[isearch-yank-line] to yank rest of line onto end of search string\
495 Type \\[isearch-quote-char] to quote control character to search for it.
496 Type \\[isearch-whitespace-chars] to match all whitespace chars in regexp.
497 \\[isearch-abort] while searching or when search has failed cancels input\
499 been found successfully.
500 \\[isearch-abort] when search is successful aborts and moves point to\
503 Also supported is a search ring of the previous 16 search strings.
504 Type \\[isearch-ring-advance] to search for the next item in the search ring.
505 Type \\[isearch-ring-retreat] to search for the previous item in the search\
507 Type \\[isearch-complete] to complete the search string using the search ring.
509 The above keys, bound in `isearch-mode-map', are often controlled by
510 options; do M-x apropos on search-.* to find them.
511 Other control and meta characters terminate the search
512 and are then executed normally (depending on `search-exit-option').
514 If this function is called non-interactively, it does not return to
515 the calling function until the search is done."
518 (isearch-mode t (not (null regexp-p)) nil (not no-recursive-edit)))
520 (defun isearch-forward-regexp (&optional not-regexp no-recursive-edit)
522 Do incremental search forward for regular expression.
523 With a prefix argument, do a regular string search instead.
524 Like ordinary incremental search except that your input
525 is treated as a regexp. See \\[isearch-forward] for more info."
527 (isearch-mode t (null not-regexp) nil (not no-recursive-edit)))
529 (defun isearch-backward (&optional regexp-p no-recursive-edit)
531 Do incremental search backward.
532 With a prefix argument, do a regular expression search instead.
533 See \\[isearch-forward] for more information."
535 (isearch-mode nil (not (null regexp-p)) nil (not no-recursive-edit)))
537 (defun isearch-backward-regexp (&optional not-regexp no-recursive-edit)
539 Do incremental search backward for regular expression.
540 With a prefix argument, do a regular string search instead.
541 Like ordinary incremental search except that your input
542 is treated as a regexp. See \\[isearch-forward] for more info."
544 (isearch-mode nil (null not-regexp) nil (not no-recursive-edit)))
547 (defun isearch-mode-help ()
549 (describe-function 'isearch-forward)
553 ;;;==================================================================
554 ;; isearch-mode only sets up incremental search for the minor mode.
555 ;; All the work is done by the isearch-mode commands.
558 ;;(defconst isearch-commands '(isearch-forward isearch-backward
559 ;; isearch-forward-regexp isearch-backward-regexp)
560 ;; "List of commands for which isearch-mode does not recursive-edit.")
563 (defun isearch-mode (forward &optional regexp op-fun recursive-edit word-p)
564 "Start isearch minor mode. Called by isearch-forward, etc."
566 ;; Initialize global vars.
567 (setq isearch-forward forward
568 isearch-regexp regexp
570 isearch-op-fun op-fun
571 isearch-case-fold-search case-fold-search
577 isearch-barrier (point)
579 isearch-yank-flag nil
580 isearch-invalid-regexp nil
581 ;; Use (baud-rate) for now, for sake of other versions.
582 isearch-slow-terminal-mode (and (<= (baud-rate) search-slow-speed)
584 (* 4 search-slow-window-lines)))
585 isearch-other-end nil
586 isearch-small-window nil
588 isearch-opoint (point)
589 isearch-window-configuration (current-window-configuration)
590 isearch-old-local-map (current-local-map)
591 search-ring-yank-pointer nil
592 regexp-search-ring-yank-pointer nil)
593 ;; This was for Lucid Emacs. But now that we have pre-command-hook,
594 ;; it causes trouble.
595 ;; (if isearch-pre-command-hook-exists
596 ;; (add-hook 'pre-command-hook 'isearch-pre-command-hook))
597 (setq isearch-mode " Isearch") ;; forward? regexp?
598 (set-buffer-modified-p (buffer-modified-p)) ; update modeline
602 (use-local-map isearch-mode-map)
604 (run-hooks 'isearch-mode-hook)
606 ;; isearch-mode can be made modal (in the sense of not returning to
607 ;; the calling function until searching is completed) by entering
608 ;; a recursive-edit and exiting it when done isearching.
609 (if recursive-edit (recursive-edit))
613 ;;;====================================================
614 ;; Some high level utilities. Others below.
616 (defun isearch-update ()
617 ;; Called after each command to update the display.
618 (if (if isearch-event-data-type
619 (null unread-command-event)
620 (if isearch-gnu-emacs-events
621 (null unread-command-events)
622 (< unread-command-char 0)))
624 (if (not (input-pending-p))
626 (if (and isearch-slow-terminal-mode
627 (not (or isearch-small-window
628 (pos-visible-in-window-p))))
629 (let ((found-point (point)))
630 (setq isearch-small-window t)
631 (move-to-window-line 0)
632 (let ((window-min-height 1))
633 (split-window nil (if (< search-slow-window-lines 0)
634 (1+ (- search-slow-window-lines))
636 (1+ search-slow-window-lines)))))
637 (if (< search-slow-window-lines 0)
638 (progn (vertical-motion (- 1 search-slow-window-lines))
639 (set-window-start (next-window) (point))
640 (set-window-hscroll (next-window)
642 (set-window-hscroll (selected-window) 0))
644 (goto-char found-point)))
645 (if isearch-other-end
646 (if (< isearch-other-end (point)) ; isearch-forward?
647 (isearch-highlight isearch-other-end (point))
648 (isearch-highlight (point) isearch-other-end)))
650 (setq ;; quit-flag nil not for isearch-mode
652 isearch-yank-flag nil)
656 (defun isearch-done (&optional nopush)
657 ;; Called by all commands that terminate isearch-mode.
658 ;; If NOPUSH is non-nil, we don't push the string on the search ring.
659 (use-local-map isearch-old-local-map)
660 ;; (setq pre-command-hook isearch-old-pre-command-hook) ; for lemacs
661 (isearch-dehighlight t)
662 (let ((found-start (window-start (selected-window)))
663 (found-point (point)))
664 (set-window-configuration isearch-window-configuration)
666 ;; If there was movement, mark the starting position.
667 ;; Maybe should test difference between and set mark iff > threshold.
668 (if (/= (point) isearch-opoint)
670 (push-mark isearch-opoint t)
671 (or executing-macro (> (minibuffer-depth) 0)
672 (message "Mark saved where search started")))
673 ;; (message "") why is this needed?
675 (if isearch-small-window
676 (goto-char found-point)
677 ;; Exiting the save-window-excursion clobbers window-start; restore it.
678 (set-window-start (selected-window) found-start t)))
680 (setq isearch-mode nil)
681 (set-buffer-modified-p (buffer-modified-p)) ;; update modeline
683 (if (and (> (length isearch-string) 0) (not nopush))
684 ;; Update the ring data.
686 (if (or (null regexp-search-ring)
687 (not (string= isearch-string (car regexp-search-ring))))
689 (setq regexp-search-ring
690 (cons isearch-string regexp-search-ring))
691 (if (> (length regexp-search-ring) regexp-search-ring-max)
692 (setcdr (nthcdr (1- search-ring-max) regexp-search-ring)
694 (if (or (null search-ring)
695 (not (string= isearch-string (car search-ring))))
697 (setq search-ring (cons isearch-string search-ring))
698 (if (> (length search-ring) search-ring-max)
699 (setcdr (nthcdr (1- search-ring-max) search-ring) nil))))))
701 (run-hooks 'isearch-mode-end-hook)
702 (if isearch-recursive-edit (exit-recursive-edit)))
704 ;;;=======================================================
705 ;;; Switching buffers should first terminate isearch-mode.
706 ;;; This is done quite differently for each varient of emacs.
707 ;;; For lemacs, see Exiting in lemacs below
709 ;; For Emacs 19, the frame switch event is handled.
710 (defun isearch-switch-frame-handler ()
711 (interactive) ;; Is this necessary?
712 ;; First terminate isearch-mode.
714 (handle-switch-frame (car (cdr (isearch-last-command-char)))))
716 ;;;========================================================
719 ;;;====================================================
720 ;; Commands active while inside of the isearch minor mode.
722 (defun isearch-exit ()
723 "Exit search normally.
724 However, if this is the first command after starting incremental
725 search and `search-nonincremental-instead' is non-nil, do a
726 nonincremental search instead via `isearch-edit-string'."
728 (if (and search-nonincremental-instead
729 (= 0 (length isearch-string)))
730 (let ((isearch-nonincremental t))
731 (isearch-edit-string)))
735 (defun isearch-edit-string ()
736 "Edit the search string in the minibuffer.
737 The following additional command keys are active while editing.
738 \\<minibuffer-local-isearch-map>
739 \\[exit-minibuffer] to resume incremental searching with the edited string.
740 \\[isearch-nonincremental-exit-minibuffer] to do one nonincremental search.
741 \\[isearch-forward-exit-minibuffer] to resume isearching forward.
742 \\[isearch-backward-exit-minibuffer] to resume isearching backward.
743 \\[isearch-ring-advance-edit] to replace the search string with the next item in the search ring.
744 \\[isearch-ring-retreat-edit] to replace the search string with the previou item in the search ring.
745 \\[isearch-complete-edit] to complete the search string using the search ring.
747 If first char entered is \\[isearch-yank-word], then do word search instead."
749 ;; This code is very hairy for several reasons, explained in the code.
750 ;; Mainly, isearch-mode must be terminated while editing and then restarted.
751 ;; If there were a way to catch any change of buffer from the minibuffer,
752 ;; this could be simplified greatly.
753 ;; Editing doesnt back up the search point. Should it?
756 (let (isearch-nonincremental ; should search nonincrementally?
758 ;; Locally bind all isearch global variables to protect them
759 ;; from recursive isearching.
760 ;; isearch-string -message and -forward are not bound
761 ;; so they may be changed. Instead, save the values.
762 (isearch-new-string isearch-string)
763 (isearch-new-message isearch-message)
764 (isearch-new-forward isearch-forward)
765 (isearch-new-word isearch-word)
767 (isearch-regexp isearch-regexp)
768 (isearch-op-fun isearch-op-fun)
769 (isearch-cmds isearch-cmds)
770 (isearch-success isearch-success)
771 (isearch-wrapped isearch-wrapped)
772 (isearch-barrier isearch-barrier)
773 (isearch-adjusted isearch-adjusted)
774 (isearch-yank-flag isearch-yank-flag)
775 (isearch-invalid-regexp isearch-invalid-regexp)
776 (isearch-other-end isearch-other-end)
777 (isearch-opoint isearch-opoint)
778 (isearch-slow-terminal-mode isearch-slow-terminal-mode)
779 (isearch-small-window isearch-small-window)
780 (isearch-recursive-edit isearch-recursive-edit)
781 ;; Save current configuration so we can restore it here.
782 (isearch-window-configuration (current-window-configuration))
785 ;; Actually terminate isearching until editing is done.
786 ;; This is so that the user can do anything without failure,
787 ;; like switch buffers and start another isearch, and return.
790 (exit nil)) ; was recursive editing
792 (isearch-message) ;; for read-char
794 (let* (;; Why does following read-char echo?
795 ;;(echo-keystrokes 0) ;; not needed with above message
796 (e (let ((cursor-in-echo-area t))
797 (if isearch-event-data-type
798 (allocate-event) (read-char))))
799 ;; Binding minibuffer-history-symbol to nil is a work-around
800 ;; for some incompatibility with gmhist.
801 (minibuffer-history-symbol))
802 ;; If the first character the user types when we prompt them
803 ;; for a string is the yank-word character, then go into
804 ;; word-search mode. Otherwise unread that character and
805 ;; read a key the normal way.
806 ;; Word search does not apply (yet) to regexp searches,
807 ;; no check is made here.
808 (message (isearch-message-prefix nil nil t))
809 (if (eq 'isearch-yank-word
813 (if isearch-event-data-type
814 (or (event-to-character (next-command-event e)) 0)
816 (setq isearch-word t ;; so message-prefix is right
819 (setq cursor-in-echo-area nil)
820 (setq isearch-new-string
822 (read-from-minibuffer (isearch-message-prefix)
824 minibuffer-local-isearch-map nil
826 isearch-new-message (mapconcat 'text-char-description
827 isearch-new-string "")))
828 ;; Always resume isearching by restarting it.
829 (isearch-mode isearch-forward
832 isearch-recursive-edit
835 ;; Copy new local values to isearch globals
836 (setq isearch-string isearch-new-string
837 isearch-message isearch-new-message
838 isearch-forward isearch-new-forward
839 isearch-word isearch-new-word))
841 ;; Empty isearch-string means use default.
842 (if (= 0 (length isearch-string))
843 (setq isearch-string (car (if isearch-regexp regexp-search-ring
845 ;; This used to set the last search string,
846 ;; but I think it is not right to do that here.
847 ;; Only the string actually used should be saved.
850 ;; Reinvoke the pending search.
854 (if isearch-nonincremental
856 ;; (sit-for 1) ;; needed if isearch-done does: (message "")
859 (quit ; handle abort-recursive-edit
860 (isearch-abort) ;; outside of let to restore outside global values
863 (defun isearch-nonincremental-exit-minibuffer ()
865 (setq isearch-nonincremental t)
868 (defun isearch-forward-exit-minibuffer ()
870 (setq isearch-new-forward t)
873 (defun isearch-reverse-exit-minibuffer ()
875 (setq isearch-new-forward nil)
879 (defun isearch-abort ()
880 "Abort incremental search mode if searching is successful, signalling quit.
881 Otherwise, revert to previous successful search and continue searching.
882 Use `isearch-exit' to quit without signalling."
884 ;; (ding) signal instead below, if quiting
887 ;; If search is successful, move back to starting point
888 ;; and really do quit.
889 (progn (goto-char isearch-opoint)
890 (isearch-done t) ; exit isearch
891 (signal 'quit nil)) ; and pass on quit signal
892 ;; If search is failing, rub out until it is once more successful.
893 (while (not isearch-success) (isearch-pop-state))
897 (defun isearch-repeat (direction)
898 ;; Utility for isearch-repeat-forward and -backward.
899 (if (eq isearch-forward (eq direction 'forward))
900 ;; C-s in forward or C-r in reverse.
901 (if (equal isearch-string "")
902 ;; If search string is empty, use last one.
904 (or (if isearch-regexp
905 (car regexp-search-ring)
909 (mapconcat 'isearch-text-char-description
911 ;; If already have what to search for, repeat it.
915 (goto-char (if isearch-forward (point-min) (point-max)))
916 (setq isearch-wrapped t))))
917 ;; C-s in reverse or C-r in forward, change direction.
918 (setq isearch-forward (not isearch-forward)))
920 (setq isearch-barrier (point)) ; For subsequent \| if regexp.
921 (setq isearch-success t)
922 (or (equal isearch-string "")
924 ;; If repeating a search that found
925 ;; an empty string, ensure we advance.
926 (if (equal (match-end 0) (match-beginning 0))
927 (forward-char (if isearch-forward 1 -1)))
932 (defun isearch-repeat-forward ()
933 "Repeat incremental search forwards."
935 (isearch-repeat 'forward))
937 (defun isearch-repeat-backward ()
938 "Repeat incremental search backwards."
940 (isearch-repeat 'backward))
942 (defun isearch-toggle-regexp ()
943 "Toggle regexp searching on or off."
944 ;; The status stack is left unchanged.
946 (setq isearch-regexp (not isearch-regexp))
947 (if isearch-regexp (setq isearch-word nil))
950 (defun isearch-delete-char ()
951 "Discard last input item and move point back.
952 If no previous match was done, just beep."
954 (if (null (cdr isearch-cmds))
960 (defun isearch-yank (chunk)
961 ;; Helper for isearch-yank-word and isearch-yank-line
962 (let ((string (save-excursion
963 (and (not isearch-forward) isearch-other-end
964 (goto-char isearch-other-end))
974 ;; Downcase the string if not supposed to case-fold yanked strings.
975 (if (and isearch-case-fold-search
976 (eq 'not-yanks search-upper-case))
977 (setq string (downcase string)))
978 (if isearch-regexp (setq string (regexp-quote string)))
979 (setq isearch-string (concat isearch-string string)
981 (concat isearch-message
982 (mapconcat 'isearch-text-char-description
984 ;; Don't move cursor in reverse search.
985 isearch-yank-flag t))
986 (isearch-search-and-update))
989 (defun isearch-yank-word ()
990 "Pull next word from buffer into search string."
992 (isearch-yank 'word))
994 (defun isearch-yank-line ()
995 "Pull rest of line from buffer into search string."
997 (isearch-yank 'line))
1000 (defun isearch-search-and-update ()
1001 ;; Do the search and update the display.
1002 (if (and (not isearch-success)
1003 ;; unsuccessful regexp search may become
1004 ;; successful by addition of characters which
1005 ;; make isearch-string valid
1006 (not isearch-regexp))
1008 ;; In reverse search, adding stuff at
1009 ;; the end may cause zero or many more chars to be
1010 ;; matched, in the string following point.
1011 ;; Allow all those possibilities without moving point as
1012 ;; long as the match does not extend past search origin.
1013 (if (and (not isearch-forward) (not isearch-adjusted)
1015 (looking-at (if isearch-regexp isearch-string
1016 (regexp-quote isearch-string)))
1018 (or isearch-yank-flag
1020 (min isearch-opoint isearch-barrier))))
1021 (setq isearch-success t
1022 isearch-invalid-regexp nil
1023 isearch-other-end (match-end 0))
1024 ;; Not regexp, not reverse, or no match at point.
1025 (if (and isearch-other-end (not isearch-adjusted))
1026 (goto-char (if isearch-forward isearch-other-end
1029 (1+ isearch-other-end)))))
1032 (isearch-push-state)
1033 (if isearch-op-fun (funcall isearch-op-fun))
1037 ;; *, ?, and | chars can make a regexp more liberal.
1038 ;; They can make a regexp match sooner or make it succeed instead of failing.
1039 ;; So go back to place last successful search started
1040 ;; or to the last ^S/^R (barrier), whichever is nearer.
1041 ;; + needs no special handling because the string must match at least once.
1043 (defun isearch-*-char ()
1044 "Handle * and ? specially in regexps."
1049 (setq isearch-adjusted t)
1050 (let ((cs (nth (if isearch-forward
1051 5 ; isearch-other-end
1053 (car (cdr isearch-cmds)))))
1054 ;; (car isearch-cmds) is after last search;
1055 ;; (car (cdr isearch-cmds)) is from before it.
1056 (setq cs (or cs isearch-barrier))
1059 (max cs isearch-barrier)
1060 (min cs isearch-barrier))))))
1061 (isearch-process-search-char (isearch-last-command-char)))
1064 (defun isearch-|-char ()
1065 "If in regexp search, jump to the barrier."
1069 (setq isearch-adjusted t)
1070 (goto-char isearch-barrier)))
1071 (isearch-process-search-char (isearch-last-command-char)))
1074 (fset 'isearch-other-control-char 'isearch-other-meta-char)
1076 (defun isearch-other-meta-char ()
1077 "Exit the search normally and reread this key sequence.
1078 But only if `search-exit-option' is non-nil, the default.
1079 If it is the symbol `edit', the search string is edited in the minibuffer
1080 and the meta character is unread so that it applies to editing the string."
1082 (cond ((eq search-exit-option 'edit)
1083 (let ((key (this-command-keys)))
1084 (apply 'isearch-unread (listify-key-sequence key)))
1085 (isearch-edit-string))
1087 (let ((key (this-command-keys)))
1088 (apply 'isearch-unread (listify-key-sequence key)))
1091 (isearch-process-search-string (this-command-keys)
1092 (this-command-keys)))))
1095 (defun isearch-quote-char ()
1096 "Quote special characters for incremental search."
1098 (isearch-process-search-char (read-quoted-char (isearch-message t))))
1100 (defun isearch-return-char ()
1101 "Convert return into newline for incremental search.
1104 (isearch-process-search-char ?\n))
1106 (defun isearch-printing-char ()
1107 "Add this ordinary printing character to the search string and search."
1109 (isearch-process-search-char (isearch-last-command-char)))
1111 (defun isearch-whitespace-chars ()
1112 "Match all whitespace chars, if in regexp mode.
1113 If you want to search for just a space, type C-q SPC."
1116 (if search-whitespace-regexp
1117 (isearch-process-search-string search-whitespace-regexp " ")
1118 (isearch-printing-char))
1120 ;; This way of doing word search doesnt correctly extend current search.
1121 ;; (setq isearch-word t)
1122 ;; (setq isearch-adjusted t)
1123 ;; (goto-char isearch-barrier)
1124 (isearch-printing-char))))
1126 (defun isearch-process-search-char (char)
1127 ;; Append the char to the search string, update the message and re-search.
1128 (isearch-process-search-string
1129 (isearch-char-to-string char)
1130 (isearch-text-char-description char)))
1132 (defun isearch-process-search-string (string message)
1133 (setq isearch-string (concat isearch-string string)
1134 isearch-message (concat isearch-message message))
1135 (isearch-search-and-update))
1138 ;;===========================================================
1141 (defun isearch-ring-adjust1 (advance)
1142 ;; Helper for isearch-ring-adjust
1143 (let* ((ring (if isearch-regexp regexp-search-ring search-ring))
1144 (length (length ring))
1145 (yank-pointer-name (if isearch-regexp
1146 'regexp-search-ring-yank-pointer
1147 'search-ring-yank-pointer))
1148 (yank-pointer (eval yank-pointer-name)))
1151 (set yank-pointer-name
1153 (% (+ (or yank-pointer 0)
1154 (if advance (1- length) 1))
1156 (setq isearch-string (nth yank-pointer ring)
1157 isearch-message (mapconcat 'isearch-text-char-description
1158 isearch-string "")))))
1160 (defun isearch-ring-adjust (advance)
1161 ;; Helper for isearch-ring-advance and isearch-ring-retreat
1162 (if (cdr isearch-cmds) ;; is there more than one thing on stack?
1163 (isearch-pop-state))
1164 (isearch-ring-adjust1 advance)
1165 (isearch-push-state)
1166 (if search-ring-update
1170 (isearch-edit-string)
1173 (defun isearch-ring-advance ()
1174 "Advance to the next search string in the ring."
1175 ;; This could be more general to handle a prefix arg, but who would use it.
1177 (isearch-ring-adjust 'advance))
1179 (defun isearch-ring-retreat ()
1180 "Retreat to the previous search string in the ring."
1182 (isearch-ring-adjust nil))
1184 (defun isearch-ring-advance-edit (n)
1185 "Insert the next element of the search history into the minibuffer."
1187 (let* ((yank-pointer-name (if isearch-regexp
1188 'regexp-search-ring-yank-pointer
1189 'search-ring-yank-pointer))
1190 (yank-pointer (eval yank-pointer-name))
1191 (ring (if isearch-regexp regexp-search-ring search-ring))
1192 (length (length ring)))
1195 (set yank-pointer-name
1197 (% (+ (or yank-pointer 0)
1198 ;; Add LENGTH here to ensure a positive result.
1204 (insert (nth yank-pointer ring))
1205 (goto-char (point-max)))))
1207 (defun isearch-ring-retreat-edit (n)
1208 "Inserts the previous element of the search history into the minibuffer."
1210 (isearch-ring-advance-edit (- n)))
1212 ;;(defun isearch-ring-adjust-edit (advance)
1213 ;; "Use the next or previous search string in the ring while in minibuffer."
1214 ;; (isearch-ring-adjust1 advance)
1216 ;; (insert isearch-string))
1218 ;;(defun isearch-ring-advance-edit ()
1220 ;; (isearch-ring-adjust-edit 'advance))
1222 ;;(defun isearch-ring-retreat-edit ()
1223 ;; "Retreat to the previous search string in the ring while in the minibuffer."
1225 ;; (isearch-ring-adjust-edit nil))
1228 (defun isearch-complete1 ()
1229 ;; Helper for isearch-complete and isearch-complete-edit
1230 ;; Return t if completion OK, nil if no completion exists.
1231 (let* ((ring (if isearch-regexp regexp-search-ring search-ring))
1232 (alist (mapcar (function (lambda (string) (list string))) ring))
1233 (completion-ignore-case case-fold-search)
1234 (completion (try-completion isearch-string alist)))
1237 ;; isearch-string stays the same
1239 ((or completion ; not nil, must be a string
1240 (= 0 (length isearch-string))) ; shouldnt have to say this
1241 (if (equal completion isearch-string) ;; no extension?
1242 (if completion-auto-help
1243 (with-output-to-temp-buffer "*Isearch completions*"
1244 (display-completion-list
1245 (all-completions isearch-string alist))))
1246 (setq isearch-string completion))
1249 (message "No completion") ; waits a second if in minibuffer
1252 (defun isearch-complete ()
1253 "Complete the search string from the strings on the search ring.
1254 The completed string is then editable in the minibuffer.
1255 If there is no completion possible, say so and continue searching."
1257 (if (isearch-complete1)
1258 (isearch-edit-string)
1263 (defun isearch-complete-edit ()
1264 "Same as `isearch-complete' except in the minibuffer."
1266 (setq isearch-string (buffer-string))
1267 (if (isearch-complete1)
1270 (insert isearch-string))))
1273 ;;;==============================================================
1274 ;; The search status stack (and isearch window-local variables, not used).
1275 ;; Need a structure for this.
1277 (defun isearch-top-state ()
1278 (let ((cmd (car isearch-cmds)))
1279 (setq isearch-string (car cmd)
1280 isearch-message (car (cdr cmd))
1281 isearch-success (nth 3 cmd)
1282 isearch-forward (nth 4 cmd)
1283 isearch-other-end (nth 5 cmd)
1284 isearch-word (nth 6 cmd)
1285 isearch-invalid-regexp (nth 7 cmd)
1286 isearch-wrapped (nth 8 cmd)
1287 isearch-barrier (nth 9 cmd))
1288 (goto-char (car (cdr (cdr cmd))))))
1290 (defun isearch-pop-state ()
1291 (setq isearch-cmds (cdr isearch-cmds))
1295 (defun isearch-push-state ()
1297 (cons (list isearch-string isearch-message (point)
1298 isearch-success isearch-forward isearch-other-end
1300 isearch-invalid-regexp isearch-wrapped isearch-barrier)
1304 ;;;==================================================================
1307 (defun isearch-message (&optional c-q-hack ellipsis)
1308 ;; Generate and print the message string.
1309 (let ((cursor-in-echo-area ellipsis)
1311 (isearch-message-prefix c-q-hack ellipsis isearch-nonincremental)
1313 (isearch-message-suffix c-q-hack ellipsis)
1315 (if c-q-hack m (message "%s" m))))
1317 (defun isearch-message-prefix (&optional c-q-hack ellipsis nonincremental)
1318 ;; If about to search, and previous search regexp was invalid,
1319 ;; check that it still is. If it is valid now,
1320 ;; let the message we display while searching say that it is valid.
1321 (and isearch-invalid-regexp ellipsis
1323 (progn (re-search-forward isearch-string (point) t)
1324 (setq isearch-invalid-regexp nil))
1326 ;; If currently failing, display no ellipsis.
1327 (or isearch-success (setq ellipsis nil))
1328 (let ((m (concat (if isearch-success "" "failing ")
1329 (if isearch-wrapped "wrapped ")
1330 (if isearch-word "word " "")
1331 (if isearch-regexp "regexp " "")
1332 (if nonincremental "search" "I-search")
1333 (if isearch-forward ": " " backward: ")
1335 (aset m 0 (upcase (aref m 0)))
1339 (defun isearch-message-suffix (&optional c-q-hack ellipsis)
1340 (concat (if c-q-hack "^Q" "")
1341 (if isearch-invalid-regexp
1342 (concat " [" isearch-invalid-regexp "]")
1346 ;;;========================================================
1349 (defun isearch-search ()
1350 ;; Do the search with the current search string.
1351 (isearch-message nil t)
1352 (if search-upper-case
1353 (setq isearch-case-fold-search (isearch-no-upper-case-p isearch-string)))
1354 (condition-case lossage
1355 (let ((inhibit-quit nil)
1356 (case-fold-search isearch-case-fold-search))
1357 (if isearch-regexp (setq isearch-invalid-regexp nil))
1358 (setq isearch-success
1362 'word-search-forward 'word-search-backward))
1365 're-search-forward 're-search-backward))
1367 (if isearch-forward 'search-forward 'search-backward)))
1368 isearch-string nil t))
1370 (setq isearch-other-end
1371 (if isearch-forward (match-beginning 0) (match-end 0)))))
1373 (quit (isearch-unread ?\C-g)
1374 (setq isearch-success nil))
1377 (setq isearch-invalid-regexp (car (cdr lossage)))
1379 "\\`Premature \\|\\`Unmatched \\|\\`Invalid "
1380 isearch-invalid-regexp)
1381 (setq isearch-invalid-regexp "incomplete input")))
1383 ;; stack overflow in regexp search.
1384 (setq isearch-invalid-regexp (car (cdr lossage)))))
1388 ;; Ding if failed this time after succeeding last time.
1389 (and (nth 3 (car isearch-cmds))
1391 (goto-char (nth 2 (car isearch-cmds)))))
1395 ;;;========================================================
1398 (defun isearch-highlight (begin end))
1399 (defun isearch-dehighlight (totally))
1401 ;; lemacs uses faces
1403 (defvar isearch-extent nil)
1405 (or (find-face 'isearch) ;; this face is initialized by x-faces.el
1406 (make-face 'isearch)) ;; since isearch is preloaded
1408 (defun isearch-lemacs-highlight (begin end)
1409 (if (null isearch-highlight)
1411 (if (and (extentp isearch-extent)
1412 (eq (extent-buffer isearch-extent) (current-buffer)))
1413 (set-extent-endpoints isearch-extent begin end)
1414 (if (and (extentp isearch-extent)
1415 (bufferp (extent-buffer isearch-extent))
1416 (buffer-name (extent-buffer isearch-extent)))
1417 (delete-extent isearch-extent))
1418 (setq isearch-extent (make-extent begin end (current-buffer))))
1419 (set-extent-face isearch-extent 'isearch)))
1421 (defun isearch-lemacs-dehighlight (totally)
1422 (if (and isearch-highlight isearch-extent)
1424 (let ((inhibit-quit t))
1425 (if (and (extentp isearch-extent)
1426 (bufferp (extent-buffer isearch-extent))
1427 (buffer-name (extent-buffer isearch-extent)))
1428 (delete-extent isearch-extent))
1429 (setq isearch-extent nil))
1430 (if (and (extentp isearch-extent)
1431 (bufferp (extent-buffer isearch-extent))
1432 (buffer-name (extent-buffer isearch-extent)))
1433 (set-extent-face isearch-extent 'default)
1434 (isearch-dehighlight t)))))
1436 (fset 'isearch-highlight (symbol-function 'isearch-lemacs-highlight))
1437 (fset 'isearch-dehighlight (symbol-function 'isearch-lemacs-dehighlight))
1440 ;;;===========================================================
1441 ;;; General utilities
1443 ;; (fset 'isearch-member-equal (symbol-function 'member)) ; for emacs 19
1445 (defun isearch-member-equal (item list)
1446 "Return non-nil if ITEM is `equal' to some item in LIST.
1447 Actually return the list whose car is that item."
1448 (while (and list (not (equal item (car list))))
1449 (setq list (cdr list)))
1453 (defun isearch-no-upper-case-p (string)
1454 "Return t if there are no upper case chars in string.
1455 But upper case chars preceeded by \\ (but not \\\\) do not count since they
1456 have special meaning in a regexp."
1457 (let ((case-fold-search nil))
1458 (not (string-match "\\(^\\|\\\\\\\\\\|[^\\]\\)[A-Z]" string))))
1461 ;;;=================================================
1462 ;;; Special functions for lemacs events.
1464 ;; To quiet the byte-compiler.
1465 (defvar unread-command-event)
1466 (defvar unread-command-events)
1467 (defvar last-command-event)
1469 (defun isearch-char-to-string (c)
1472 (make-string 1 (event-to-character c))))
1474 (defun isearch-text-char-description (c)
1475 (isearch-char-to-string c))
1477 (defun isearch-unread (&rest char-or-events)
1478 ;; General function to unread characters or events.
1479 (if isearch-gnu-emacs-events
1480 (setq unread-command-events
1481 (append char-or-events unread-command-events))
1482 (let ((char (if (cdr char-or-events)
1484 (while (cdr char-or-events)
1485 (setq char-or-events (cdr char-or-events)))
1486 (+ 128 (car char-or-events)))
1487 (car char-or-events))))
1488 (if isearch-event-data-type
1489 (setq unread-command-event char)
1490 (setq unread-command-char char)))))
1492 (defun isearch-last-command-char ()
1493 ;; General function to return the last command character.
1494 (if isearch-event-data-type
1501 ;;;========================================================
1502 ;;; Exiting in lemacs
1504 ;; This is a large amount of code to support automatic termination of
1505 ;; isearch-mode when a command (however it is invoked) is not an
1506 ;; isearch command, or the buffer is switched out from under
1507 ;; isearch-mode. Only later versions of lemacs have the pre-command-hook.
1509 ;;(if isearch-pre-command-hook-exists
1512 ;;;; This list must be modified whenever the available commands are modified.
1513 ;;(mapcar (function (lambda (command)
1514 ;; (put command 'isearch-command t)))
1515 ;; '(isearch-printing-char
1516 ;; isearch-return-char
1517 ;; isearch-repeat-forward
1518 ;; isearch-repeat-backward
1519 ;; isearch-delete-char
1521 ;; isearch-quote-char
1523 ;; isearch-printing-char
1524 ;; isearch-printing-char
1525 ;; isearch-yank-word
1526 ;; isearch-yank-line
1530 ;; isearch-toggle-regexp
1531 ;; isearch-edit-string
1532 ;; isearch-mode-help
1533 ;; isearch-ring-advance
1534 ;; isearch-ring-retreat
1535 ;; isearch-ring-advance-edit
1536 ;; isearch-ring-retreat-edit
1537 ;; isearch-whitespace-chars
1539 ;; isearch-complete-edit
1540 ;; isearch-edit-string
1541 ;; isearch-toggle-regexp
1542 ;; ;; The following may not be needed since isearch-mode is off already.
1543 ;; isearch-forward-exit-minibuffer
1544 ;; isearch-reverse-exit-minibuffer
1545 ;; isearch-nonincremental-exit-minibuffer))
1547 ;;(defun isearch-pre-command-hook ()
1549 ;; ;; For use as the value of `pre-command-hook' when isearch-mode is active.
1550 ;; ;; If the command about to be executed is not one of the isearch commands,
1551 ;; ;; then isearch-mode is turned off before that command is executed.
1553 ;; ;; If the command about to be executed is self-insert-command, or is a
1554 ;; ;; keyboard macro of a single key sequence which is bound to self-insert-
1555 ;; ;; command, then we add those chars to the search ring instead of inserting
1556 ;; ;; them in the buffer. In this way, the set of self-searching characters
1557 ;; ;; need not be exhaustively enumerated, but is derived from other maps.
1559 ;; (isearch-maybe-frob-keyboard-macros)
1560 ;; (if (and (symbolp this-command)
1561 ;; (get this-command 'isearch-command))
1565 ;;(defun isearch-maybe-frob-keyboard-macros ()
1567 ;; ;; If the command about to be executed is `self-insert-command' then change
1568 ;; ;; the command to `isearch-printing-char' instead, meaning add the last-
1569 ;; ;; typed character to the search string.
1571 ;; ;; If `this-command' is a string or a vector (that is, a keyboard macro)
1572 ;; ;; and it contains only one command, which is bound to self-insert-command,
1573 ;; ;; then do the same thing as for self-inserting commands: arrange for that
1574 ;; ;; character to be added to the search string. If we didn't do this, then
1575 ;; ;; typing a compose sequence (a la x-compose.el) would terminate the search
1576 ;; ;; and insert the character, instead of searching for that character.
1578 ;; (cond ((eq this-command 'self-insert-command)
1579 ;; (setq this-command 'isearch-printing-char))
1580 ;; ((and (stringp this-command)
1581 ;; (eq (key-binding this-command) 'self-insert-command))
1582 ;; (setq last-command-char (aref this-command 0)
1583 ;; last-command-event (character-to-event last-command-char)
1584 ;; this-command 'isearch-printing-char))
1585 ;; ((and (vectorp this-command)
1586 ;; (eq (key-binding this-command) 'self-insert-command))
1587 ;; (let* ((desc (aref this-command 0))
1588 ;; (code (cond ((integerp desc) desc)
1589 ;; ((symbolp desc) (get desc character-set-property))
1591 ;; (and (null (cdr desc))
1592 ;; (get (car desc) character-set-property)))
1595 ;; (setq last-command-char code
1596 ;; last-command-event (character-to-event last-command-char)
1597 ;; this-command 'isearch-printing-char))))
1602 ;;; isearch.el ends here