| 1 | ;;; isearch.el --- incremental search minor mode |
| 2 | |
| 3 | ;; Copyright (C) 1992, 93, 94, 95, 96, 97, 1999, 2000, 2001 |
| 4 | ;; Free Software Foundation, Inc. |
| 5 | |
| 6 | ;; Author: Daniel LaLiberte <liberte@cs.uiuc.edu> |
| 7 | ;; Maintainer: FSF |
| 8 | ;; Keywords: matching |
| 9 | |
| 10 | ;; This file is part of GNU Emacs. |
| 11 | |
| 12 | ;; GNU Emacs is free software; you can redistribute it and/or modify |
| 13 | ;; it under the terms of the GNU General Public License as published by |
| 14 | ;; the Free Software Foundation; either version 2, or (at your option) |
| 15 | ;; any later version. |
| 16 | |
| 17 | ;; GNU Emacs is distributed in the hope that it will be useful, |
| 18 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 19 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 20 | ;; GNU General Public License for more details. |
| 21 | |
| 22 | ;; You should have received a copy of the GNU General Public License |
| 23 | ;; along with GNU Emacs; see the file COPYING. If not, write to the |
| 24 | ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
| 25 | ;; Boston, MA 02111-1307, USA. |
| 26 | |
| 27 | ;;; Commentary: |
| 28 | |
| 29 | ;; Instructions |
| 30 | |
| 31 | ;; For programmed use of isearch-mode, e.g. calling (isearch-forward), |
| 32 | ;; isearch-mode behaves modally and does not return until the search |
| 33 | ;; is completed. It uses a recursive-edit to behave this way. |
| 34 | |
| 35 | ;; The key bindings active within isearch-mode are defined below in |
| 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 | ;; isearch-mode should work even if you switch windows with the mouse, |
| 44 | ;; in which case isearch-mode is terminated automatically before the |
| 45 | ;; switch. |
| 46 | |
| 47 | ;; The search ring and completion commands automatically put you in |
| 48 | ;; the minibuffer to edit the string. This gives you a chance to |
| 49 | ;; modify the search string before executing the search. There are |
| 50 | ;; three commands to terminate the editing: C-s and C-r exit the |
| 51 | ;; minibuffer and search forward and reverse respectively, while C-m |
| 52 | ;; exits and does a nonincremental search. |
| 53 | |
| 54 | ;; Exiting immediately from isearch uses isearch-edit-string instead |
| 55 | ;; of nonincremental-search, if search-nonincremental-instead is non-nil. |
| 56 | ;; The name of this option should probably be changed if we decide to |
| 57 | ;; keep the behavior. No point in forcing nonincremental search until |
| 58 | ;; the last possible moment. |
| 59 | |
| 60 | ;; TODO |
| 61 | ;; - Integrate the emacs 19 generalized command history. |
| 62 | ;; - Think about incorporating query-replace. |
| 63 | ;; - Hooks and options for failed search. |
| 64 | |
| 65 | ;;; Change Log: |
| 66 | |
| 67 | ;; Changes before those recorded in ChangeLog: |
| 68 | |
| 69 | ;; Revision 1.4 92/09/14 16:26:02 liberte |
| 70 | ;; Added prefix args to isearch-forward, etc. to switch between |
| 71 | ;; string and regular expression searching. |
| 72 | ;; Added some support for lemacs. |
| 73 | ;; Added general isearch-highlight option - but only for lemacs so far. |
| 74 | ;; Added support for frame switching in emacs 19. |
| 75 | ;; Added word search option to isearch-edit-string. |
| 76 | ;; Renamed isearch-quit to isearch-abort. |
| 77 | ;; Numerous changes to comments and doc strings. |
| 78 | ;; |
| 79 | ;; Revision 1.3 92/06/29 13:10:08 liberte |
| 80 | ;; Moved modal isearch-mode handling into isearch-mode. |
| 81 | ;; Got rid of buffer-local isearch variables. |
| 82 | ;; isearch-edit-string used by ring adjustments, completion, and |
| 83 | ;; nonincremental searching. C-s and C-r are additional exit commands. |
| 84 | ;; Renamed all regex to regexp. |
| 85 | ;; Got rid of found-start and found-point globals. |
| 86 | ;; Generalized handling of upper-case chars. |
| 87 | |
| 88 | ;; Revision 1.2 92/05/27 11:33:57 liberte |
| 89 | ;; Emacs version 19 has a search ring, which is supported here. |
| 90 | ;; Other fixes found in the version 19 isearch are included here. |
| 91 | ;; |
| 92 | ;; Also see variables search-caps-disable-folding, |
| 93 | ;; search-nonincremental-instead, search-whitespace-regexp, and |
| 94 | ;; commands isearch-toggle-regexp, isearch-edit-string. |
| 95 | ;; |
| 96 | ;; semi-modal isearching is supported. |
| 97 | |
| 98 | ;; Changes for 1.1 |
| 99 | ;; 3/18/92 Fixed invalid-regexp. |
| 100 | ;; 3/18/92 Fixed yanking in regexps. |
| 101 | |
| 102 | ;;; Code: |
| 103 | |
| 104 | \f |
| 105 | ;;; Some additional options and constants. |
| 106 | |
| 107 | (defgroup isearch nil |
| 108 | "Incremental search minor mode." |
| 109 | :link '(emacs-commentary-link "isearch") |
| 110 | :link '(custom-manual "(emacs)Incremental Search") |
| 111 | :prefix "isearch-" |
| 112 | :prefix "search-" |
| 113 | :group 'matching) |
| 114 | |
| 115 | |
| 116 | (defcustom search-exit-option t |
| 117 | "*Non-nil means random control characters terminate incremental search." |
| 118 | :type 'boolean |
| 119 | :group 'isearch) |
| 120 | |
| 121 | (defcustom search-slow-window-lines 1 |
| 122 | "*Number of lines in slow search display windows. |
| 123 | These are the short windows used during incremental search on slow terminals. |
| 124 | Negative means put the slow search window at the top (normally it's at bottom) |
| 125 | and the value is minus the number of lines." |
| 126 | :type 'integer |
| 127 | :group 'isearch) |
| 128 | |
| 129 | (defcustom 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." |
| 133 | :type 'integer |
| 134 | :group 'isearch) |
| 135 | |
| 136 | (defcustom search-upper-case 'not-yanks |
| 137 | "*If non-nil, upper case chars disable case fold searching. |
| 138 | That is, upper and lower case chars must match exactly. |
| 139 | This applies no matter where the chars come from, but does not |
| 140 | apply to chars in regexps that are prefixed with `\\'. |
| 141 | If this value is `not-yanks', yanked text is always downcased." |
| 142 | :type '(choice (const :tag "off" nil) |
| 143 | (const not-yanks) |
| 144 | (other :tag "on" t)) |
| 145 | :group 'isearch) |
| 146 | |
| 147 | (defcustom search-nonincremental-instead t |
| 148 | "*If non-nil, do a nonincremental search instead if exiting immediately. |
| 149 | Actually, `isearch-edit-string' is called to let you enter the search |
| 150 | string, and RET terminates editing and does a nonincremental search." |
| 151 | :type 'boolean |
| 152 | :group 'isearch) |
| 153 | |
| 154 | (defcustom search-whitespace-regexp "\\s-+" |
| 155 | "*If non-nil, regular expression to match a sequence of whitespace chars. |
| 156 | This applies to regular expression incremental search. |
| 157 | You might want to use something like \"[ \\t\\r\\n]+\" instead. |
| 158 | In the Customization buffer, that is `[' followed by a space, |
| 159 | a tab, a carriage return (control-M), a newline, and `]+'." |
| 160 | :type 'regexp |
| 161 | :group 'isearch) |
| 162 | |
| 163 | (defcustom search-highlight t |
| 164 | "*Non-nil means incremental search highlights the current match." |
| 165 | :type 'boolean |
| 166 | :group 'isearch) |
| 167 | |
| 168 | (defcustom search-invisible 'open |
| 169 | "If t incremental search can match hidden text. |
| 170 | nil means don't match invisible text. |
| 171 | If the value is `open', if the text matched is made invisible by |
| 172 | an overlay having an `invisible' property and that overlay has a property |
| 173 | `isearch-open-invisible', then incremental search will show the contents. |
| 174 | \(This applies when using `outline.el' and `hideshow.el'.)" |
| 175 | :type '(choice (const :tag "Match hidden text" t) |
| 176 | (const :tag "Open overlays" open) |
| 177 | (const :tag "Don't match hidden text" nil)) |
| 178 | :group 'isearch) |
| 179 | |
| 180 | (defcustom isearch-hide-immediately t |
| 181 | "If non-nil, re-hide an invisible match right away. |
| 182 | This variable makes a difference when `search-invisible' is set to `open'. |
| 183 | It means that after search makes some invisible text visible |
| 184 | to show the match, it makes the text invisible again when the match moves. |
| 185 | Ordinarily the text becomes invisible again at the end of the search." |
| 186 | :type 'boolean |
| 187 | :group 'isearch) |
| 188 | |
| 189 | (defcustom isearch-resume-enabled t |
| 190 | "*If non-nil, `isearch-resume' commands are added to the command history." |
| 191 | :type 'boolean |
| 192 | :group 'isearch) |
| 193 | |
| 194 | (defvar isearch-mode-hook nil |
| 195 | "Function(s) to call after starting up an incremental search.") |
| 196 | |
| 197 | (defvar isearch-mode-end-hook nil |
| 198 | "Function(s) to call after terminating an incremental search.") |
| 199 | |
| 200 | ;;; Search ring. |
| 201 | |
| 202 | (defvar search-ring nil |
| 203 | "List of search string sequences.") |
| 204 | (defvar regexp-search-ring nil |
| 205 | "List of regular expression search string sequences.") |
| 206 | |
| 207 | (defcustom search-ring-max 16 |
| 208 | "*Maximum length of search ring before oldest elements are thrown away." |
| 209 | :type 'integer |
| 210 | :group 'isearch) |
| 211 | (defcustom regexp-search-ring-max 16 |
| 212 | "*Maximum length of regexp search ring before oldest elements are thrown away." |
| 213 | :type 'integer |
| 214 | :group 'isearch) |
| 215 | |
| 216 | (defvar search-ring-yank-pointer nil |
| 217 | "Index in `search-ring' of last string reused. |
| 218 | nil if none yet.") |
| 219 | (defvar regexp-search-ring-yank-pointer nil |
| 220 | "Index in `regexp-search-ring' of last string reused. |
| 221 | nil if none yet.") |
| 222 | |
| 223 | (defcustom search-ring-update nil |
| 224 | "*Non-nil if advancing or retreating in the search ring should cause search. |
| 225 | Default value, nil, means edit the string instead." |
| 226 | :type 'boolean |
| 227 | :group 'isearch) |
| 228 | |
| 229 | ;;; Define isearch-mode keymap. |
| 230 | |
| 231 | (defvar isearch-mode-map |
| 232 | (let* ((i 0) |
| 233 | (map (make-keymap))) |
| 234 | (or (vectorp (nth 1 map)) |
| 235 | (char-table-p (nth 1 map)) |
| 236 | (error "The initialization of isearch-mode-map must be updated")) |
| 237 | ;; Make all multibyte characters search for themselves. |
| 238 | (let ((l (generic-character-list)) |
| 239 | (table (nth 1 map))) |
| 240 | (while l |
| 241 | (set-char-table-default table (car l) 'isearch-printing-char) |
| 242 | (setq l (cdr l)))) |
| 243 | ;; Make function keys, etc, exit the search. |
| 244 | (define-key map [t] 'isearch-other-control-char) |
| 245 | ;; Control chars, by default, end isearch mode transparently. |
| 246 | ;; We need these explicit definitions because, in a dense keymap, |
| 247 | ;; the binding for t does not affect characters. |
| 248 | ;; We use a dense keymap to save space. |
| 249 | (while (< i ?\ ) |
| 250 | (define-key map (make-string 1 i) 'isearch-other-control-char) |
| 251 | (setq i (1+ i))) |
| 252 | |
| 253 | ;; Single-byte printing chars extend the search string by default. |
| 254 | (setq i ?\ ) |
| 255 | (while (< i 256) |
| 256 | (define-key map (vector i) 'isearch-printing-char) |
| 257 | (setq i (1+ i))) |
| 258 | |
| 259 | ;; To handle local bindings with meta char prefix keys, define |
| 260 | ;; another full keymap. This must be done for any other prefix |
| 261 | ;; keys as well, one full keymap per char of the prefix key. It |
| 262 | ;; would be simpler to disable the global keymap, and/or have a |
| 263 | ;; default local key binding for any key not otherwise bound. |
| 264 | (let ((meta-map (make-sparse-keymap))) |
| 265 | (define-key map (char-to-string meta-prefix-char) meta-map) |
| 266 | (define-key map [escape] meta-map)) |
| 267 | (define-key map (vector meta-prefix-char t) 'isearch-other-meta-char) |
| 268 | |
| 269 | ;; Several non-printing chars change the searching behavior. |
| 270 | (define-key map "\C-s" 'isearch-repeat-forward) |
| 271 | (define-key map "\C-r" 'isearch-repeat-backward) |
| 272 | ;; Define M-C-s and M-C-r like C-s and C-r so that the same key |
| 273 | ;; combinations can be used to repeat regexp isearches that can |
| 274 | ;; be used to start these searches. |
| 275 | (define-key map "\M-\C-s" 'isearch-repeat-forward) |
| 276 | (define-key map "\M-\C-r" 'isearch-repeat-backward) |
| 277 | (define-key map "\177" 'isearch-delete-char) |
| 278 | (define-key map "\C-g" 'isearch-abort) |
| 279 | |
| 280 | ;; This assumes \e is the meta-prefix-char. |
| 281 | (or (= ?\e meta-prefix-char) |
| 282 | (error "Inconsistency in isearch.el")) |
| 283 | (define-key map "\e\e\e" 'isearch-cancel) |
| 284 | (define-key map [escape escape escape] 'isearch-cancel) |
| 285 | |
| 286 | (define-key map "\C-q" 'isearch-quote-char) |
| 287 | |
| 288 | (define-key map "\r" 'isearch-exit) |
| 289 | (define-key map "\C-j" 'isearch-printing-char) |
| 290 | (define-key map "\t" 'isearch-printing-char) |
| 291 | (define-key map " " 'isearch-whitespace-chars) |
| 292 | (define-key map [?\S-\ ] 'isearch-whitespace-chars) |
| 293 | |
| 294 | (define-key map "\C-w" 'isearch-yank-word-or-char) |
| 295 | (define-key map "\C-y" 'isearch-yank-line) |
| 296 | |
| 297 | ;; Define keys for regexp chars * ? |. |
| 298 | ;; Nothing special for + because it matches at least once. |
| 299 | (define-key map "*" 'isearch-*-char) |
| 300 | (define-key map "?" 'isearch-*-char) |
| 301 | (define-key map "|" 'isearch-|-char) |
| 302 | |
| 303 | ;;; Turned off because I find I expect to get the global definition--rms. |
| 304 | ;;; ;; Instead bind C-h to special help command for isearch-mode. |
| 305 | ;;; (define-key map "\C-h" 'isearch-mode-help) |
| 306 | |
| 307 | (define-key map "\M-n" 'isearch-ring-advance) |
| 308 | (define-key map "\M-p" 'isearch-ring-retreat) |
| 309 | (define-key map "\M-y" 'isearch-yank-kill) |
| 310 | |
| 311 | (define-key map "\M-\t" 'isearch-complete) |
| 312 | |
| 313 | ;; Pass frame events transparently so they won't exit the search. |
| 314 | ;; In particular, if we have more than one display open, then a |
| 315 | ;; switch-frame might be generated by someone typing at another keyboard. |
| 316 | (define-key map [switch-frame] nil) |
| 317 | (define-key map [delete-frame] nil) |
| 318 | (define-key map [iconify-frame] nil) |
| 319 | (define-key map [make-frame-visible] nil) |
| 320 | (define-key map [mouse-movement] nil) |
| 321 | ;; For searching multilingual text. |
| 322 | (define-key map "\C-\\" 'isearch-toggle-input-method) |
| 323 | (define-key map "\C-^" 'isearch-toggle-specified-input-method) |
| 324 | |
| 325 | ;; People expect to be able to paste with the mouse. |
| 326 | (define-key map [mouse-2] #'isearch-mouse-2) |
| 327 | (define-key map [down-mouse-2] nil) |
| 328 | |
| 329 | ;; Some bindings you may want to put in your isearch-mode-hook. |
| 330 | ;; Suggest some alternates... |
| 331 | (define-key map "\M-c" 'isearch-toggle-case-fold) |
| 332 | (define-key map "\M-r" 'isearch-toggle-regexp) |
| 333 | (define-key map "\M-e" 'isearch-edit-string) |
| 334 | |
| 335 | map) |
| 336 | "Keymap for `isearch-mode'.") |
| 337 | |
| 338 | (defvar minibuffer-local-isearch-map |
| 339 | (let ((map (make-sparse-keymap))) |
| 340 | (set-keymap-parent map minibuffer-local-map) |
| 341 | (define-key map "\r" 'isearch-nonincremental-exit-minibuffer) |
| 342 | (define-key map "\M-n" 'isearch-ring-advance-edit) |
| 343 | (define-key map "\M-p" 'isearch-ring-retreat-edit) |
| 344 | (define-key map "\M-\t" 'isearch-complete-edit) |
| 345 | (define-key map "\C-s" 'isearch-forward-exit-minibuffer) |
| 346 | (define-key map "\C-r" 'isearch-reverse-exit-minibuffer) |
| 347 | map) |
| 348 | "Keymap for editing isearch strings in the minibuffer.") |
| 349 | |
| 350 | ;; Internal variables declared globally for byte-compiler. |
| 351 | ;; These are all set with setq while isearching |
| 352 | ;; and bound locally while editing the search string. |
| 353 | |
| 354 | (defvar isearch-forward nil) ; Searching in the forward direction. |
| 355 | (defvar isearch-regexp nil) ; Searching for a regexp. |
| 356 | (defvar isearch-word nil) ; Searching for words. |
| 357 | |
| 358 | (defvar isearch-cmds nil) ; Stack of search status sets. |
| 359 | (defvar isearch-string "") ; The current search string. |
| 360 | (defvar isearch-message "") ; text-char-description version of isearch-string |
| 361 | |
| 362 | (defvar isearch-success t) ; Searching is currently successful. |
| 363 | (defvar isearch-invalid-regexp nil) ; Regexp not well formed. |
| 364 | (defvar isearch-within-brackets nil) ; Regexp has unclosed [. |
| 365 | (defvar isearch-other-end nil) ; Start (end) of match if forward (backward). |
| 366 | (defvar isearch-wrapped nil) ; Searching restarted from the top (bottom). |
| 367 | (defvar isearch-barrier 0) |
| 368 | (defvar isearch-just-started nil) |
| 369 | (defvar isearch-start-hscroll 0) ; hscroll when starting the search. |
| 370 | |
| 371 | ; case-fold-search while searching. |
| 372 | ; either nil, t, or 'yes. 'yes means the same as t except that mixed |
| 373 | ; case in the search string is ignored. |
| 374 | (defvar isearch-case-fold-search nil) |
| 375 | |
| 376 | (defvar isearch-last-case-fold-search nil) |
| 377 | |
| 378 | ;; Used to save default value while isearch is active |
| 379 | (defvar isearch-original-minibuffer-message-timeout nil) |
| 380 | |
| 381 | (defvar isearch-adjusted nil) |
| 382 | (defvar isearch-slow-terminal-mode nil) |
| 383 | ;;; If t, using a small window. |
| 384 | (defvar isearch-small-window nil) |
| 385 | (defvar isearch-opoint 0) |
| 386 | ;;; The window configuration active at the beginning of the search. |
| 387 | (defvar isearch-window-configuration nil) |
| 388 | |
| 389 | ;; Flag to indicate a yank occurred, so don't move the cursor. |
| 390 | (defvar isearch-yank-flag nil) |
| 391 | |
| 392 | ;;; A function to be called after each input character is processed. |
| 393 | ;;; (It is not called after characters that exit the search.) |
| 394 | ;;; It is only set from an optional argument to `isearch-mode'. |
| 395 | (defvar isearch-op-fun nil) |
| 396 | |
| 397 | ;;; Is isearch-mode in a recursive edit for modal searching. |
| 398 | (defvar isearch-recursive-edit nil) |
| 399 | |
| 400 | ;;; Should isearch be terminated after doing one search? |
| 401 | (defvar isearch-nonincremental nil) |
| 402 | |
| 403 | ;; New value of isearch-forward after isearch-edit-string. |
| 404 | (defvar isearch-new-forward nil) |
| 405 | |
| 406 | ;; Accumulate here the overlays opened during searching. |
| 407 | (defvar isearch-opened-overlays nil) |
| 408 | |
| 409 | ;; The value of input-method-function when isearch is invoked. |
| 410 | (defvar isearch-input-method-function nil) |
| 411 | |
| 412 | ;; A flag to tell if input-method-function is locally bound when |
| 413 | ;; isearch is invoked. |
| 414 | (defvar isearch-input-method-local-p nil) |
| 415 | |
| 416 | ;; Minor-mode-alist changes - kind of redundant with the |
| 417 | ;; echo area, but if isearching in multiple windows, it can be useful. |
| 418 | |
| 419 | (or (assq 'isearch-mode minor-mode-alist) |
| 420 | (nconc minor-mode-alist |
| 421 | (list '(isearch-mode isearch-mode)))) |
| 422 | |
| 423 | (defvar isearch-mode nil) ;; Name of the minor mode, if non-nil. |
| 424 | (make-variable-buffer-local 'isearch-mode) |
| 425 | |
| 426 | (define-key global-map "\C-s" 'isearch-forward) |
| 427 | (define-key esc-map "\C-s" 'isearch-forward-regexp) |
| 428 | (define-key global-map "\C-r" 'isearch-backward) |
| 429 | (define-key esc-map "\C-r" 'isearch-backward-regexp) |
| 430 | |
| 431 | ;;; Entry points to isearch-mode. |
| 432 | |
| 433 | (defun isearch-forward (&optional regexp-p no-recursive-edit) |
| 434 | "\ |
| 435 | Do incremental search forward. |
| 436 | With a prefix argument, do an incremental regular expression search instead. |
| 437 | \\<isearch-mode-map> |
| 438 | As you type characters, they add to the search string and are found. |
| 439 | The following non-printing keys are bound in `isearch-mode-map'. |
| 440 | |
| 441 | Type \\[isearch-delete-char] to cancel characters from end of search string. |
| 442 | Type \\[isearch-exit] to exit, leaving point at location found. |
| 443 | Type LFD (C-j) to match end of line. |
| 444 | Type \\[isearch-repeat-forward] to search again forward,\ |
| 445 | \\[isearch-repeat-backward] to search again backward. |
| 446 | Type \\[isearch-yank-word-or-char] to yank word from buffer onto end of search\ |
| 447 | string and search for it. |
| 448 | Type \\[isearch-yank-line] to yank rest of line onto end of search string\ |
| 449 | and search for it. |
| 450 | Type \\[isearch-yank-kill] to yank last killed text onto end of search string\ |
| 451 | and search for it. |
| 452 | Type \\[isearch-quote-char] to quote control character to search for it. |
| 453 | \\[isearch-abort] while searching or when search has failed cancels input\ |
| 454 | back to what has |
| 455 | been found successfully. |
| 456 | \\[isearch-abort] when search is successful aborts and moves point to\ |
| 457 | starting point. |
| 458 | |
| 459 | Type \\[isearch-toggle-case-fold] to toggle search case-sensitivity. |
| 460 | Type \\[isearch-toggle-regexp] to toggle regular-expression mode. |
| 461 | Type \\[isearch-edit-string] to edit the search string in the minibuffer. |
| 462 | |
| 463 | Also supported is a search ring of the previous 16 search strings. |
| 464 | Type \\[isearch-ring-advance] to search for the next item in the search ring. |
| 465 | Type \\[isearch-ring-retreat] to search for the previous item in the search\ |
| 466 | ring. |
| 467 | Type \\[isearch-complete] to complete the search string using the search ring. |
| 468 | |
| 469 | If an input method is turned on in the current buffer, that input |
| 470 | method is also active while you are typing a characters to search. To |
| 471 | toggle the input method, type \\[isearch-toggle-input-method]. It |
| 472 | also toggles the input method in the current buffer. |
| 473 | |
| 474 | To use a different input method for searching, type |
| 475 | \\[isearch-toggle-specified-input-method], and specify an input method |
| 476 | you want to use. |
| 477 | |
| 478 | The above keys, bound in `isearch-mode-map', are often controlled by |
| 479 | options; do M-x apropos on search-.* to find them. |
| 480 | Other control and meta characters terminate the search |
| 481 | and are then executed normally (depending on `search-exit-option'). |
| 482 | Likewise for function keys and mouse button events. |
| 483 | |
| 484 | If this function is called non-interactively, it does not return to |
| 485 | the calling function until the search is done." |
| 486 | |
| 487 | (interactive "P\np") |
| 488 | (isearch-mode t (not (null regexp-p)) nil (not no-recursive-edit))) |
| 489 | |
| 490 | (defun isearch-forward-regexp (&optional not-regexp no-recursive-edit) |
| 491 | "\ |
| 492 | Do incremental search forward for regular expression. |
| 493 | With a prefix argument, do a regular string search instead. |
| 494 | Like ordinary incremental search except that your input |
| 495 | is treated as a regexp. See \\[isearch-forward] for more info." |
| 496 | (interactive "P\np") |
| 497 | (isearch-mode t (null not-regexp) nil (not no-recursive-edit))) |
| 498 | |
| 499 | (defun isearch-backward (&optional regexp-p no-recursive-edit) |
| 500 | "\ |
| 501 | Do incremental search backward. |
| 502 | With a prefix argument, do a regular expression search instead. |
| 503 | See \\[isearch-forward] for more information." |
| 504 | (interactive "P\np") |
| 505 | (isearch-mode nil (not (null regexp-p)) nil (not no-recursive-edit))) |
| 506 | |
| 507 | (defun isearch-backward-regexp (&optional not-regexp no-recursive-edit) |
| 508 | "\ |
| 509 | Do incremental search backward for regular expression. |
| 510 | With a prefix argument, do a regular string search instead. |
| 511 | Like ordinary incremental search except that your input |
| 512 | is treated as a regexp. See \\[isearch-forward] for more info." |
| 513 | (interactive "P\np") |
| 514 | (isearch-mode nil (null not-regexp) nil (not no-recursive-edit))) |
| 515 | |
| 516 | |
| 517 | (defun isearch-mode-help () |
| 518 | (interactive) |
| 519 | (describe-function 'isearch-forward) |
| 520 | (isearch-update)) |
| 521 | |
| 522 | \f |
| 523 | ;; isearch-mode only sets up incremental search for the minor mode. |
| 524 | ;; All the work is done by the isearch-mode commands. |
| 525 | |
| 526 | ;; Not used yet: |
| 527 | ;;(defvar isearch-commands '(isearch-forward isearch-backward |
| 528 | ;; isearch-forward-regexp isearch-backward-regexp) |
| 529 | ;; "List of commands for which isearch-mode does not recursive-edit.") |
| 530 | |
| 531 | |
| 532 | (defun isearch-mode (forward &optional regexp op-fun recursive-edit word-p) |
| 533 | "Start isearch minor mode. Called by `isearch-forward', etc. |
| 534 | |
| 535 | \\{isearch-mode-map}" |
| 536 | |
| 537 | ;; Initialize global vars. |
| 538 | (setq isearch-forward forward |
| 539 | isearch-regexp regexp |
| 540 | isearch-word word-p |
| 541 | isearch-op-fun op-fun |
| 542 | isearch-last-case-fold-search isearch-case-fold-search |
| 543 | isearch-case-fold-search case-fold-search |
| 544 | isearch-string "" |
| 545 | isearch-message "" |
| 546 | isearch-cmds nil |
| 547 | isearch-success t |
| 548 | isearch-wrapped nil |
| 549 | isearch-barrier (point) |
| 550 | isearch-adjusted nil |
| 551 | isearch-yank-flag nil |
| 552 | isearch-invalid-regexp nil |
| 553 | isearch-within-brackets nil |
| 554 | isearch-slow-terminal-mode (and (<= baud-rate search-slow-speed) |
| 555 | (> (window-height) |
| 556 | (* 4 |
| 557 | (abs search-slow-window-lines)))) |
| 558 | isearch-other-end nil |
| 559 | isearch-small-window nil |
| 560 | isearch-just-started t |
| 561 | isearch-start-hscroll (window-hscroll) |
| 562 | |
| 563 | isearch-opoint (point) |
| 564 | search-ring-yank-pointer nil |
| 565 | isearch-opened-overlays nil |
| 566 | isearch-input-method-function input-method-function |
| 567 | isearch-input-method-local-p (local-variable-p 'input-method-function) |
| 568 | regexp-search-ring-yank-pointer nil |
| 569 | |
| 570 | ;; Save the original value of `minibuffer-message-timeout', and |
| 571 | ;; set it to nil so that isearch's messages don't get timed out. |
| 572 | isearch-original-minibuffer-message-timeout minibuffer-message-timeout |
| 573 | minibuffer-message-timeout nil) |
| 574 | |
| 575 | ;; We must bypass input method while reading key. When a user type |
| 576 | ;; printable character, appropriate input method is turned on in |
| 577 | ;; minibuffer to read multibyte characters. |
| 578 | (or isearch-input-method-local-p |
| 579 | (make-local-variable 'input-method-function)) |
| 580 | (setq input-method-function nil) |
| 581 | |
| 582 | (looking-at "") |
| 583 | (setq isearch-window-configuration |
| 584 | (if isearch-slow-terminal-mode (current-window-configuration) nil)) |
| 585 | |
| 586 | ;; Maybe make minibuffer frame visible and/or raise it. |
| 587 | (let ((frame (window-frame (minibuffer-window)))) |
| 588 | (if (not (memq (frame-live-p frame) '(nil t))) |
| 589 | (progn |
| 590 | (make-frame-visible frame) |
| 591 | (if minibuffer-auto-raise |
| 592 | (raise-frame frame))))) |
| 593 | |
| 594 | (setq isearch-mode " Isearch") ;; forward? regexp? |
| 595 | (force-mode-line-update) |
| 596 | |
| 597 | (isearch-push-state) |
| 598 | |
| 599 | (setq overriding-terminal-local-map isearch-mode-map) |
| 600 | (isearch-update) |
| 601 | (run-hooks 'isearch-mode-hook) |
| 602 | |
| 603 | (add-hook 'mouse-leave-buffer-hook 'isearch-done) |
| 604 | (add-hook 'kbd-macro-termination-hook 'isearch-done) |
| 605 | |
| 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 |
| 610 | (let ((isearch-recursive-edit t)) |
| 611 | (recursive-edit))) |
| 612 | isearch-success) |
| 613 | |
| 614 | |
| 615 | ;; Some high level utilities. Others below. |
| 616 | |
| 617 | (defun isearch-update () |
| 618 | ;; Called after each command to update the display. |
| 619 | (if (null unread-command-events) |
| 620 | (progn |
| 621 | (if (not (input-pending-p)) |
| 622 | (isearch-message)) |
| 623 | (if (and isearch-slow-terminal-mode |
| 624 | (not (or isearch-small-window |
| 625 | (pos-visible-in-window-p)))) |
| 626 | (let ((found-point (point))) |
| 627 | (setq isearch-small-window t) |
| 628 | (move-to-window-line 0) |
| 629 | (let ((window-min-height 1)) |
| 630 | (split-window nil (if (< search-slow-window-lines 0) |
| 631 | (1+ (- search-slow-window-lines)) |
| 632 | (- (window-height) |
| 633 | (1+ search-slow-window-lines))))) |
| 634 | (if (< search-slow-window-lines 0) |
| 635 | (progn (vertical-motion (- 1 search-slow-window-lines)) |
| 636 | (set-window-start (next-window) (point)) |
| 637 | (set-window-hscroll (next-window) |
| 638 | (window-hscroll)) |
| 639 | (set-window-hscroll (selected-window) 0)) |
| 640 | (other-window 1)) |
| 641 | (goto-char found-point)) |
| 642 | ;; Keep same hscrolling as at the start of the search when possible |
| 643 | (let ((current-scroll (window-hscroll))) |
| 644 | (set-window-hscroll (selected-window) isearch-start-hscroll) |
| 645 | (unless (pos-visible-in-window-p) |
| 646 | (set-window-hscroll (selected-window) current-scroll)))) |
| 647 | (if isearch-other-end |
| 648 | (if (< isearch-other-end (point)) ; isearch-forward? |
| 649 | (isearch-highlight isearch-other-end (point)) |
| 650 | (isearch-highlight (point) isearch-other-end)) |
| 651 | (isearch-dehighlight nil)) |
| 652 | )) |
| 653 | (setq ;; quit-flag nil not for isearch-mode |
| 654 | isearch-adjusted nil |
| 655 | isearch-yank-flag nil) |
| 656 | (isearch-lazy-highlight-new-loop) |
| 657 | ;; We must prevent the point moving to the end of composition when a |
| 658 | ;; part of the composition has just been searched. |
| 659 | (setq disable-point-adjustment t)) |
| 660 | |
| 661 | (defun isearch-done (&optional nopush edit) |
| 662 | (if isearch-resume-enabled |
| 663 | (let ((command `(isearch-resume ,isearch-string ,isearch-regexp |
| 664 | ,isearch-word ,isearch-forward |
| 665 | ,isearch-message |
| 666 | ',isearch-case-fold-search))) |
| 667 | (unless (equal (car command-history) command) |
| 668 | (setq command-history (cons command command-history))))) |
| 669 | |
| 670 | (remove-hook 'mouse-leave-buffer-hook 'isearch-done) |
| 671 | (remove-hook 'kbd-macro-termination-hook 'isearch-done) |
| 672 | (setq isearch-lazy-highlight-start nil) |
| 673 | |
| 674 | ;; Called by all commands that terminate isearch-mode. |
| 675 | ;; If NOPUSH is non-nil, we don't push the string on the search ring. |
| 676 | (setq overriding-terminal-local-map nil) |
| 677 | ;; (setq pre-command-hook isearch-old-pre-command-hook) ; for lemacs |
| 678 | (setq minibuffer-message-timeout isearch-original-minibuffer-message-timeout) |
| 679 | (isearch-dehighlight t) |
| 680 | (isearch-lazy-highlight-cleanup isearch-lazy-highlight-cleanup) |
| 681 | (let ((found-start (window-start (selected-window))) |
| 682 | (found-point (point))) |
| 683 | (if isearch-window-configuration |
| 684 | (set-window-configuration isearch-window-configuration)) |
| 685 | |
| 686 | (if isearch-small-window |
| 687 | (goto-char found-point) |
| 688 | ;; Exiting the save-window-excursion clobbers window-start; restore it. |
| 689 | (set-window-start (selected-window) found-start t)) |
| 690 | |
| 691 | ;; If there was movement, mark the starting position. |
| 692 | ;; Maybe should test difference between and set mark iff > threshold. |
| 693 | (if (/= (point) isearch-opoint) |
| 694 | (or (and transient-mark-mode mark-active) |
| 695 | (progn |
| 696 | (push-mark isearch-opoint t) |
| 697 | (or executing-kbd-macro (> (minibuffer-depth) 0) |
| 698 | (message "Mark saved where search started")))))) |
| 699 | |
| 700 | (setq isearch-mode nil) |
| 701 | (if isearch-input-method-local-p |
| 702 | (setq input-method-function isearch-input-method-function) |
| 703 | (kill-local-variable 'input-method-function)) |
| 704 | |
| 705 | (force-mode-line-update) |
| 706 | |
| 707 | ;; If we ended in the middle of some intangible text, |
| 708 | ;; move to the further end of that intangible text. |
| 709 | (let ((after (if (eobp) nil |
| 710 | (get-text-property (point) 'intangible))) |
| 711 | (before (if (bobp) nil |
| 712 | (get-text-property (1- (point)) 'intangible)))) |
| 713 | (when (and before after (eq before after)) |
| 714 | (if isearch-forward |
| 715 | (goto-char (next-single-property-change (point) 'intangible)) |
| 716 | (goto-char (previous-single-property-change (point) 'intangible))))) |
| 717 | |
| 718 | (if (and (> (length isearch-string) 0) (not nopush)) |
| 719 | ;; Update the ring data. |
| 720 | (isearch-update-ring isearch-string isearch-regexp)) |
| 721 | |
| 722 | (run-hooks 'isearch-mode-end-hook) |
| 723 | (and (not edit) isearch-recursive-edit (exit-recursive-edit))) |
| 724 | |
| 725 | (defun isearch-update-ring (string &optional regexp) |
| 726 | "Add STRING to the beginning of the search ring. |
| 727 | REGEXP says which ring to use." |
| 728 | (if regexp |
| 729 | (if (or (null regexp-search-ring) |
| 730 | (not (string= string (car regexp-search-ring)))) |
| 731 | (progn |
| 732 | (setq regexp-search-ring |
| 733 | (cons string regexp-search-ring)) |
| 734 | (if (> (length regexp-search-ring) regexp-search-ring-max) |
| 735 | (setcdr (nthcdr (1- search-ring-max) regexp-search-ring) |
| 736 | nil)))) |
| 737 | (if (or (null search-ring) |
| 738 | (not (string= string (car search-ring)))) |
| 739 | (progn |
| 740 | (setq search-ring (cons string search-ring)) |
| 741 | (if (> (length search-ring) search-ring-max) |
| 742 | (setcdr (nthcdr (1- search-ring-max) search-ring) nil)))))) |
| 743 | |
| 744 | ;;; Switching buffers should first terminate isearch-mode. |
| 745 | ;;; ;; For Emacs 19, the frame switch event is handled. |
| 746 | ;;; (defun isearch-switch-frame-handler () |
| 747 | ;;; (interactive) ;; Is this necessary? |
| 748 | ;;; ;; First terminate isearch-mode. |
| 749 | ;;; (isearch-done) |
| 750 | ;;; (isearch-clean-overlays) |
| 751 | ;;; (handle-switch-frame (car (cdr last-command-char)))) |
| 752 | |
| 753 | \f |
| 754 | ;; Commands active while inside of the isearch minor mode. |
| 755 | |
| 756 | (defun isearch-exit () |
| 757 | "Exit search normally. |
| 758 | However, if this is the first command after starting incremental |
| 759 | search and `search-nonincremental-instead' is non-nil, do a |
| 760 | nonincremental search instead via `isearch-edit-string'." |
| 761 | (interactive) |
| 762 | (if (and search-nonincremental-instead |
| 763 | (= 0 (length isearch-string))) |
| 764 | (let ((isearch-nonincremental t)) |
| 765 | (isearch-edit-string))) |
| 766 | (isearch-done) |
| 767 | (isearch-clean-overlays)) |
| 768 | |
| 769 | |
| 770 | (defun isearch-edit-string () |
| 771 | "Edit the search string in the minibuffer. |
| 772 | The following additional command keys are active while editing. |
| 773 | \\<minibuffer-local-isearch-map> |
| 774 | \\[exit-minibuffer] to resume incremental searching with the edited string. |
| 775 | \\[isearch-nonincremental-exit-minibuffer] to do one nonincremental search. |
| 776 | \\[isearch-forward-exit-minibuffer] to resume isearching forward. |
| 777 | \\[isearch-reverse-exit-minibuffer] to resume isearching backward. |
| 778 | \\[isearch-ring-advance-edit] to replace the search string with the next item in the search ring. |
| 779 | \\[isearch-ring-retreat-edit] to replace the search string with the previous item in the search ring. |
| 780 | \\[isearch-complete-edit] to complete the search string using the search ring. |
| 781 | \\<isearch-mode-map> |
| 782 | If first char entered is \\[isearch-yank-word-or-char], then do word search instead." |
| 783 | |
| 784 | ;; This code is very hairy for several reasons, explained in the code. |
| 785 | ;; Mainly, isearch-mode must be terminated while editing and then restarted. |
| 786 | ;; If there were a way to catch any change of buffer from the minibuffer, |
| 787 | ;; this could be simplified greatly. |
| 788 | ;; Editing doesn't back up the search point. Should it? |
| 789 | (interactive) |
| 790 | (condition-case err |
| 791 | (progn |
| 792 | (let ((isearch-nonincremental isearch-nonincremental) |
| 793 | |
| 794 | ;; Locally bind all isearch global variables to protect them |
| 795 | ;; from recursive isearching. |
| 796 | ;; isearch-string -message and -forward are not bound |
| 797 | ;; so they may be changed. Instead, save the values. |
| 798 | (isearch-new-string isearch-string) |
| 799 | (isearch-new-message isearch-message) |
| 800 | (isearch-new-forward isearch-forward) |
| 801 | (isearch-new-word isearch-word) |
| 802 | |
| 803 | (isearch-regexp isearch-regexp) |
| 804 | (isearch-op-fun isearch-op-fun) |
| 805 | (isearch-cmds isearch-cmds) |
| 806 | (isearch-success isearch-success) |
| 807 | (isearch-wrapped isearch-wrapped) |
| 808 | (isearch-barrier isearch-barrier) |
| 809 | (isearch-adjusted isearch-adjusted) |
| 810 | (isearch-yank-flag isearch-yank-flag) |
| 811 | (isearch-invalid-regexp isearch-invalid-regexp) |
| 812 | (isearch-within-brackets isearch-within-brackets) |
| 813 | ;;; Don't bind this. We want isearch-search, below, to set it. |
| 814 | ;;; And the old value won't matter after that. |
| 815 | ;;; (isearch-other-end isearch-other-end) |
| 816 | ;;; Perhaps some of these other variables should be bound for a |
| 817 | ;;; shorter period, ending before the next isearch-search. |
| 818 | ;;; But there doesn't seem to be a real bug, so let's not risk it now. |
| 819 | (isearch-opoint isearch-opoint) |
| 820 | (isearch-slow-terminal-mode isearch-slow-terminal-mode) |
| 821 | (isearch-small-window isearch-small-window) |
| 822 | (isearch-recursive-edit isearch-recursive-edit) |
| 823 | ;; Save current configuration so we can restore it here. |
| 824 | (isearch-window-configuration (current-window-configuration)) |
| 825 | |
| 826 | ;; Temporarily restore `minibuffer-message-timeout'. |
| 827 | (minibuffer-message-timeout |
| 828 | isearch-original-minibuffer-message-timeout) |
| 829 | (isearch-original-minibuffer-message-timeout |
| 830 | isearch-original-minibuffer-message-timeout) |
| 831 | ) |
| 832 | |
| 833 | ;; Actually terminate isearching until editing is done. |
| 834 | ;; This is so that the user can do anything without failure, |
| 835 | ;; like switch buffers and start another isearch, and return. |
| 836 | (condition-case err |
| 837 | (isearch-done t t) |
| 838 | (exit nil)) ; was recursive editing |
| 839 | |
| 840 | (isearch-message) ;; for read-char |
| 841 | (unwind-protect |
| 842 | (let* (;; Why does following read-char echo? |
| 843 | ;;(echo-keystrokes 0) ;; not needed with above message |
| 844 | (e (let ((cursor-in-echo-area t)) |
| 845 | (read-event))) |
| 846 | ;; Binding minibuffer-history-symbol to nil is a work-around |
| 847 | ;; for some incompatibility with gmhist. |
| 848 | (minibuffer-history-symbol) |
| 849 | (message-log-max nil)) |
| 850 | ;; If the first character the user types when we prompt them |
| 851 | ;; for a string is the yank-word character, then go into |
| 852 | ;; word-search mode. Otherwise unread that character and |
| 853 | ;; read a key the normal way. |
| 854 | ;; Word search does not apply (yet) to regexp searches, |
| 855 | ;; no check is made here. |
| 856 | (message (isearch-message-prefix nil nil t)) |
| 857 | (if (memq (lookup-key isearch-mode-map (vector e)) |
| 858 | '(isearch-yank-word |
| 859 | isearch-yank-word-or-char)) |
| 860 | (setq isearch-word t;; so message-prefix is right |
| 861 | isearch-new-word t) |
| 862 | (cancel-kbd-macro-events) |
| 863 | (isearch-unread e)) |
| 864 | (setq cursor-in-echo-area nil) |
| 865 | (setq isearch-new-string |
| 866 | (let (junk-ring) |
| 867 | (read-from-minibuffer |
| 868 | (isearch-message-prefix nil nil isearch-nonincremental) |
| 869 | isearch-string |
| 870 | minibuffer-local-isearch-map nil |
| 871 | 'junk-ring)) |
| 872 | isearch-new-message |
| 873 | (mapconcat 'isearch-text-char-description |
| 874 | isearch-new-string ""))) |
| 875 | ;; Always resume isearching by restarting it. |
| 876 | (isearch-mode isearch-forward |
| 877 | isearch-regexp |
| 878 | isearch-op-fun |
| 879 | nil |
| 880 | isearch-word) |
| 881 | |
| 882 | ;; Copy new local values to isearch globals |
| 883 | (setq isearch-string isearch-new-string |
| 884 | isearch-message isearch-new-message |
| 885 | isearch-forward isearch-new-forward |
| 886 | isearch-word isearch-new-word)) |
| 887 | |
| 888 | ;; Empty isearch-string means use default. |
| 889 | (if (= 0 (length isearch-string)) |
| 890 | (setq isearch-string (or (car (if isearch-regexp |
| 891 | regexp-search-ring |
| 892 | search-ring)) |
| 893 | "") |
| 894 | |
| 895 | isearch-message |
| 896 | (mapconcat 'isearch-text-char-description |
| 897 | isearch-string "")) |
| 898 | ;; This used to set the last search string, |
| 899 | ;; but I think it is not right to do that here. |
| 900 | ;; Only the string actually used should be saved. |
| 901 | )) |
| 902 | |
| 903 | ;; Push the state as of before this C-s. |
| 904 | (isearch-push-state) |
| 905 | |
| 906 | ;; Reinvoke the pending search. |
| 907 | (isearch-search) |
| 908 | (isearch-update) |
| 909 | (if isearch-nonincremental |
| 910 | (progn |
| 911 | ;; (sit-for 1) ;; needed if isearch-done does: (message "") |
| 912 | (isearch-done)))) |
| 913 | |
| 914 | (quit ; handle abort-recursive-edit |
| 915 | (isearch-abort) ;; outside of let to restore outside global values |
| 916 | ))) |
| 917 | |
| 918 | (defun isearch-nonincremental-exit-minibuffer () |
| 919 | (interactive) |
| 920 | (setq isearch-nonincremental t) |
| 921 | (exit-minibuffer)) |
| 922 | |
| 923 | (defun isearch-forward-exit-minibuffer () |
| 924 | (interactive) |
| 925 | (setq isearch-new-forward t) |
| 926 | (exit-minibuffer)) |
| 927 | |
| 928 | (defun isearch-reverse-exit-minibuffer () |
| 929 | (interactive) |
| 930 | (setq isearch-new-forward nil) |
| 931 | (exit-minibuffer)) |
| 932 | |
| 933 | (defun isearch-cancel () |
| 934 | "Terminate the search and go back to the starting point." |
| 935 | (interactive) |
| 936 | (goto-char isearch-opoint) |
| 937 | (isearch-done t) |
| 938 | (isearch-clean-overlays) |
| 939 | (signal 'quit nil)) ; and pass on quit signal |
| 940 | |
| 941 | (defun isearch-abort () |
| 942 | "Abort incremental search mode if searching is successful, signaling quit. |
| 943 | Otherwise, revert to previous successful search and continue searching. |
| 944 | Use `isearch-exit' to quit without signaling." |
| 945 | (interactive) |
| 946 | ;; (ding) signal instead below, if quitting |
| 947 | (discard-input) |
| 948 | (if isearch-success |
| 949 | ;; If search is successful, move back to starting point |
| 950 | ;; and really do quit. |
| 951 | (progn (goto-char isearch-opoint) |
| 952 | (setq isearch-success nil) |
| 953 | (isearch-done t) ; exit isearch |
| 954 | (isearch-clean-overlays) |
| 955 | (signal 'quit nil)) ; and pass on quit signal |
| 956 | ;; If search is failing, or has an incomplete regexp, |
| 957 | ;; rub out until it is once more successful. |
| 958 | (while (or (not isearch-success) isearch-invalid-regexp) |
| 959 | (isearch-pop-state)) |
| 960 | (isearch-update))) |
| 961 | |
| 962 | (defun isearch-repeat (direction) |
| 963 | ;; Utility for isearch-repeat-forward and -backward. |
| 964 | (if (eq isearch-forward (eq direction 'forward)) |
| 965 | ;; C-s in forward or C-r in reverse. |
| 966 | (if (equal isearch-string "") |
| 967 | ;; If search string is empty, use last one. |
| 968 | (setq isearch-string |
| 969 | (or (if isearch-regexp |
| 970 | (car regexp-search-ring) |
| 971 | (car search-ring)) |
| 972 | "") |
| 973 | isearch-message |
| 974 | (mapconcat 'isearch-text-char-description |
| 975 | isearch-string "") |
| 976 | isearch-case-fold-search isearch-last-case-fold-search) |
| 977 | ;; If already have what to search for, repeat it. |
| 978 | (or isearch-success |
| 979 | (progn |
| 980 | (goto-char (if isearch-forward (point-min) (point-max))) |
| 981 | (setq isearch-wrapped t)))) |
| 982 | ;; C-s in reverse or C-r in forward, change direction. |
| 983 | (setq isearch-forward (not isearch-forward))) |
| 984 | |
| 985 | (setq isearch-barrier (point)) ; For subsequent \| if regexp. |
| 986 | |
| 987 | (if (equal isearch-string "") |
| 988 | (setq isearch-success t) |
| 989 | (if (and isearch-success (equal (match-end 0) (match-beginning 0)) |
| 990 | (not isearch-just-started)) |
| 991 | ;; If repeating a search that found |
| 992 | ;; an empty string, ensure we advance. |
| 993 | (if (if isearch-forward (eobp) (bobp)) |
| 994 | ;; If there's nowhere to advance to, fail (and wrap next time). |
| 995 | (progn |
| 996 | (setq isearch-success nil) |
| 997 | (ding)) |
| 998 | (forward-char (if isearch-forward 1 -1)) |
| 999 | (isearch-search)) |
| 1000 | (isearch-search))) |
| 1001 | |
| 1002 | (isearch-push-state) |
| 1003 | (isearch-update)) |
| 1004 | |
| 1005 | (defun isearch-repeat-forward () |
| 1006 | "Repeat incremental search forwards." |
| 1007 | (interactive) |
| 1008 | (isearch-repeat 'forward)) |
| 1009 | |
| 1010 | (defun isearch-repeat-backward () |
| 1011 | "Repeat incremental search backwards." |
| 1012 | (interactive) |
| 1013 | (isearch-repeat 'backward)) |
| 1014 | |
| 1015 | (defun isearch-toggle-regexp () |
| 1016 | "Toggle regexp searching on or off." |
| 1017 | ;; The status stack is left unchanged. |
| 1018 | (interactive) |
| 1019 | (setq isearch-regexp (not isearch-regexp)) |
| 1020 | (if isearch-regexp (setq isearch-word nil)) |
| 1021 | (isearch-update)) |
| 1022 | |
| 1023 | (defun isearch-toggle-case-fold () |
| 1024 | "Toggle case folding in searching on or off." |
| 1025 | (interactive) |
| 1026 | (setq isearch-case-fold-search |
| 1027 | (if isearch-case-fold-search nil 'yes)) |
| 1028 | (let ((message-log-max nil)) |
| 1029 | (message "%s%s [case %ssensitive]" |
| 1030 | (isearch-message-prefix nil nil isearch-nonincremental) |
| 1031 | isearch-message |
| 1032 | (if isearch-case-fold-search "in" ""))) |
| 1033 | (setq isearch-adjusted t) |
| 1034 | (sit-for 1) |
| 1035 | (isearch-update)) |
| 1036 | |
| 1037 | (defun isearch-delete-char () |
| 1038 | "Discard last input item and move point back. |
| 1039 | If no previous match was done, just beep." |
| 1040 | (interactive) |
| 1041 | (if (null (cdr isearch-cmds)) |
| 1042 | (ding) |
| 1043 | (isearch-pop-state)) |
| 1044 | (isearch-update)) |
| 1045 | |
| 1046 | |
| 1047 | (defun isearch-yank-string (string) |
| 1048 | "Pull STRING into search string." |
| 1049 | ;; Downcase the string if not supposed to case-fold yanked strings. |
| 1050 | (if (and isearch-case-fold-search |
| 1051 | (eq 'not-yanks search-upper-case)) |
| 1052 | (setq string (downcase string))) |
| 1053 | (if isearch-regexp (setq string (regexp-quote string))) |
| 1054 | (setq isearch-string (concat isearch-string string) |
| 1055 | isearch-message |
| 1056 | (concat isearch-message |
| 1057 | (mapconcat 'isearch-text-char-description |
| 1058 | string "")) |
| 1059 | ;; Don't move cursor in reverse search. |
| 1060 | isearch-yank-flag t) |
| 1061 | (isearch-search-and-update)) |
| 1062 | |
| 1063 | (defun isearch-yank-kill () |
| 1064 | "Pull string from kill ring into search string." |
| 1065 | (interactive) |
| 1066 | (isearch-yank-string (current-kill 0))) |
| 1067 | |
| 1068 | (defun isearch-yank-x-selection () |
| 1069 | "Pull current X selection into search string." |
| 1070 | (interactive) |
| 1071 | (isearch-yank-string (x-get-selection))) |
| 1072 | |
| 1073 | |
| 1074 | (defun isearch-mouse-2 (click arg) |
| 1075 | "Handle mouse-2 in Isearch mode. |
| 1076 | For a click in the echo area, invoke `isearch-yank-x-selection'. |
| 1077 | Otherwise invoke whatever mouse-2 is bound to outside of Isearch." |
| 1078 | (interactive "e\nP") |
| 1079 | (let* ((w (posn-window (event-start click))) |
| 1080 | (overriding-terminal-local-map nil) |
| 1081 | (key (vector (event-basic-type click))) |
| 1082 | (binding (key-binding key))) |
| 1083 | (if (and (window-minibuffer-p w) |
| 1084 | (not (minibuffer-window-active-p w))) ; in echo area |
| 1085 | (isearch-yank-x-selection) |
| 1086 | (when binding |
| 1087 | ;; Kluge to allow passing ARG to functions that support it, |
| 1088 | ;; like mouse-yank-at-click. |
| 1089 | (if (equal (cadr (interactive-form binding)) "e\nP") |
| 1090 | (funcall binding click arg) |
| 1091 | (funcall binding click)))))) |
| 1092 | |
| 1093 | |
| 1094 | (defun isearch-yank-internal (jumpform) |
| 1095 | "Pull the text from point to the point reached by JUMPFORM. |
| 1096 | JUMPFORM is a lambda expression that takes no arguments and returns a |
| 1097 | buffer position, possibly having moved point to that position. For |
| 1098 | example, it might move point forward by a word and return point, or it |
| 1099 | might return the position of the end of the line." |
| 1100 | (isearch-yank-string |
| 1101 | (save-excursion |
| 1102 | (and (not isearch-forward) isearch-other-end |
| 1103 | (goto-char isearch-other-end)) |
| 1104 | (buffer-substring-no-properties (point) (funcall jumpform))))) |
| 1105 | |
| 1106 | (defun isearch-yank-char () |
| 1107 | "Pull next letter from buffer into search string." |
| 1108 | (interactive) |
| 1109 | (isearch-yank-internal (lambda () (forward-char 1) (point)))) |
| 1110 | |
| 1111 | (defun isearch-yank-word-or-char () |
| 1112 | "Pull next character or word from buffer into search string." |
| 1113 | (interactive) |
| 1114 | (isearch-yank-internal |
| 1115 | (lambda () |
| 1116 | (if (or (= (char-syntax (or (char-after) 0)) ?w) |
| 1117 | (= (char-syntax (or (char-after (1+ (point))) 0)) ?w)) |
| 1118 | (forward-word 1) |
| 1119 | (forward-char 1)) (point)))) |
| 1120 | |
| 1121 | (defun isearch-yank-word () |
| 1122 | "Pull next word from buffer into search string." |
| 1123 | (interactive) |
| 1124 | (isearch-yank-internal (lambda () (forward-word 1) (point)))) |
| 1125 | |
| 1126 | (defun isearch-yank-line () |
| 1127 | "Pull rest of line from buffer into search string." |
| 1128 | (interactive) |
| 1129 | (isearch-yank-internal (lambda () (line-end-position)))) |
| 1130 | |
| 1131 | |
| 1132 | (defun isearch-search-and-update () |
| 1133 | ;; Do the search and update the display. |
| 1134 | (if (and (not isearch-success) |
| 1135 | ;; unsuccessful regexp search may become |
| 1136 | ;; successful by addition of characters which |
| 1137 | ;; make isearch-string valid |
| 1138 | (not isearch-regexp)) |
| 1139 | nil |
| 1140 | ;; In reverse search, adding stuff at |
| 1141 | ;; the end may cause zero or many more chars to be |
| 1142 | ;; matched, in the string following point. |
| 1143 | ;; Allow all those possibilities without moving point as |
| 1144 | ;; long as the match does not extend past search origin. |
| 1145 | (if (and (not isearch-forward) (not isearch-adjusted) |
| 1146 | (condition-case () |
| 1147 | (let ((case-fold-search isearch-case-fold-search)) |
| 1148 | (if (and (eq case-fold-search t) search-upper-case) |
| 1149 | (setq case-fold-search |
| 1150 | (isearch-no-upper-case-p isearch-string isearch-regexp))) |
| 1151 | (looking-at (if isearch-regexp isearch-string |
| 1152 | (regexp-quote isearch-string)))) |
| 1153 | (error nil)) |
| 1154 | (or isearch-yank-flag |
| 1155 | (<= (match-end 0) |
| 1156 | (min isearch-opoint isearch-barrier)))) |
| 1157 | (progn |
| 1158 | (setq isearch-success t |
| 1159 | isearch-invalid-regexp nil |
| 1160 | isearch-within-brackets nil |
| 1161 | isearch-other-end (match-end 0)) |
| 1162 | (if (and (eq isearch-case-fold-search t) search-upper-case) |
| 1163 | (setq isearch-case-fold-search |
| 1164 | (isearch-no-upper-case-p isearch-string isearch-regexp)))) |
| 1165 | ;; Not regexp, not reverse, or no match at point. |
| 1166 | (if (and isearch-other-end (not isearch-adjusted)) |
| 1167 | (goto-char (if isearch-forward isearch-other-end |
| 1168 | (min isearch-opoint |
| 1169 | isearch-barrier |
| 1170 | (1+ isearch-other-end))))) |
| 1171 | (isearch-search) |
| 1172 | )) |
| 1173 | (isearch-push-state) |
| 1174 | (if isearch-op-fun (funcall isearch-op-fun)) |
| 1175 | (isearch-update)) |
| 1176 | |
| 1177 | |
| 1178 | ;; *, ?, and | chars can make a regexp more liberal. |
| 1179 | ;; They can make a regexp match sooner or make it succeed instead of failing. |
| 1180 | ;; So go back to place last successful search started |
| 1181 | ;; or to the last ^S/^R (barrier), whichever is nearer. |
| 1182 | ;; + needs no special handling because the string must match at least once. |
| 1183 | |
| 1184 | (defun isearch-*-char () |
| 1185 | "Handle * and ? specially in regexps." |
| 1186 | (interactive) |
| 1187 | (if isearch-regexp |
| 1188 | (let ((idx (length isearch-string))) |
| 1189 | (while (and (> idx 0) |
| 1190 | (eq (aref isearch-string (1- idx)) ?\\)) |
| 1191 | (setq idx (1- idx))) |
| 1192 | (when (= (mod (- (length isearch-string) idx) 2) 0) |
| 1193 | (setq isearch-adjusted t) |
| 1194 | ;; Get the isearch-other-end from before the last search. |
| 1195 | ;; We want to start from there, |
| 1196 | ;; so that we don't retreat farther than that. |
| 1197 | ;; (car isearch-cmds) is after last search; |
| 1198 | ;; (car (cdr isearch-cmds)) is from before it. |
| 1199 | (let ((cs (nth 5 (car (cdr isearch-cmds))))) |
| 1200 | (setq cs (or cs isearch-barrier)) |
| 1201 | (goto-char |
| 1202 | (if isearch-forward |
| 1203 | (max cs isearch-barrier) |
| 1204 | (min cs isearch-barrier))))))) |
| 1205 | (isearch-process-search-char last-command-char)) |
| 1206 | |
| 1207 | |
| 1208 | (defun isearch-|-char () |
| 1209 | "If in regexp search, jump to the barrier." |
| 1210 | (interactive) |
| 1211 | (if isearch-regexp |
| 1212 | (progn |
| 1213 | (setq isearch-adjusted t) |
| 1214 | (goto-char isearch-barrier))) |
| 1215 | (isearch-process-search-char last-command-char)) |
| 1216 | |
| 1217 | |
| 1218 | (defalias 'isearch-other-control-char 'isearch-other-meta-char) |
| 1219 | |
| 1220 | (defun isearch-other-meta-char () |
| 1221 | "Exit the search normally and reread this key sequence. |
| 1222 | But only if `search-exit-option' is non-nil, the default. |
| 1223 | If it is the symbol `edit', the search string is edited in the minibuffer |
| 1224 | and the meta character is unread so that it applies to editing the string." |
| 1225 | (interactive) |
| 1226 | (let* ((key (this-command-keys)) |
| 1227 | (main-event (aref key 0)) |
| 1228 | (keylist (listify-key-sequence key))) |
| 1229 | (cond ((and (= (length key) 1) |
| 1230 | (let ((lookup (lookup-key function-key-map key))) |
| 1231 | (not (or (null lookup) (integerp lookup) |
| 1232 | (keymapp lookup))))) |
| 1233 | ;; Handle a function key that translates into something else. |
| 1234 | ;; If the key has a global definition too, |
| 1235 | ;; exit and unread the key itself, so its global definition runs. |
| 1236 | ;; Otherwise, unread the translation, |
| 1237 | ;; so that the translated key takes effect within isearch. |
| 1238 | (cancel-kbd-macro-events) |
| 1239 | (if (lookup-key global-map key) |
| 1240 | (progn |
| 1241 | (isearch-done) |
| 1242 | (apply 'isearch-unread keylist)) |
| 1243 | (setq keylist |
| 1244 | (listify-key-sequence (lookup-key function-key-map key))) |
| 1245 | (while keylist |
| 1246 | (setq key (car keylist)) |
| 1247 | ;; If KEY is a printing char, we handle it here |
| 1248 | ;; directly to avoid the input method and keyboard |
| 1249 | ;; coding system translating it. |
| 1250 | (if (and (integerp key) |
| 1251 | (>= key ?\ ) (/= key 127) (< key 256)) |
| 1252 | (progn |
| 1253 | (isearch-process-search-char key) |
| 1254 | (setq keylist (cdr keylist))) |
| 1255 | ;; As the remaining keys in KEYLIST can't be handled |
| 1256 | ;; here, we must reread them. |
| 1257 | (apply 'isearch-unread keylist) |
| 1258 | (setq keylist nil))))) |
| 1259 | ( |
| 1260 | ;; Handle an undefined shifted control character |
| 1261 | ;; by downshifting it if that makes it defined. |
| 1262 | ;; (As read-key-sequence would normally do, |
| 1263 | ;; if we didn't have a default definition.) |
| 1264 | (let ((mods (event-modifiers main-event))) |
| 1265 | (and (integerp main-event) |
| 1266 | (memq 'shift mods) |
| 1267 | (memq 'control mods) |
| 1268 | (lookup-key isearch-mode-map |
| 1269 | (let ((copy (copy-sequence key))) |
| 1270 | (aset copy 0 |
| 1271 | (- main-event (- ?\C-\S-a ?\C-a))) |
| 1272 | copy) |
| 1273 | nil))) |
| 1274 | (setcar keylist (- main-event (- ?\C-\S-a ?\C-a))) |
| 1275 | (cancel-kbd-macro-events) |
| 1276 | (apply 'isearch-unread keylist)) |
| 1277 | ((eq search-exit-option 'edit) |
| 1278 | (apply 'isearch-unread keylist) |
| 1279 | (isearch-edit-string)) |
| 1280 | (search-exit-option |
| 1281 | (let (window) |
| 1282 | (cancel-kbd-macro-events) |
| 1283 | (apply 'isearch-unread keylist) |
| 1284 | |
| 1285 | ;; Properly handle scroll-bar and mode-line clicks for |
| 1286 | ;; which a dummy prefix event was generated as (aref key |
| 1287 | ;; 0). Note that we don't have to modify the event |
| 1288 | ;; anymore in 21 because read_key_sequence no longer modifies |
| 1289 | ;; events to produce fake prefix keys. |
| 1290 | (when (and (> (length key) 1) |
| 1291 | (symbolp (aref key 0)) |
| 1292 | (listp (aref key 1)) |
| 1293 | (not (numberp (posn-point |
| 1294 | (event-start (aref key 1)))))) |
| 1295 | (pop unread-command-events) |
| 1296 | (setq main-event (car unread-command-events))) |
| 1297 | |
| 1298 | ;; If we got a mouse click event, that event contains the |
| 1299 | ;; window clicked on. maybe it was read with the buffer |
| 1300 | ;; it was clicked on. If so, that buffer, not the current one, |
| 1301 | ;; is in isearch mode. So end the search in that buffer. |
| 1302 | |
| 1303 | ;; ??? I have no idea what this if checks for, but it's |
| 1304 | ;; obviously wrong for the case that a down-mouse event |
| 1305 | ;; on another window invokes this function. The event |
| 1306 | ;; will contain the window clicked on and that window's |
| 1307 | ;; buffer is certainaly not always in Isearch mode. |
| 1308 | ;; |
| 1309 | ;; Leave the code in, but check for current buffer not |
| 1310 | ;; being in Isearch mode for now, until someone tells |
| 1311 | ;; what it's really supposed to do. |
| 1312 | ;; |
| 1313 | ;; --gerd 2001-08-10. |
| 1314 | |
| 1315 | (if (and (not isearch-mode) |
| 1316 | (listp main-event) |
| 1317 | (setq window (posn-window (event-start main-event))) |
| 1318 | (windowp window) |
| 1319 | (or (> (minibuffer-depth) 0) |
| 1320 | (not (window-minibuffer-p window)))) |
| 1321 | (save-excursion |
| 1322 | (set-buffer (window-buffer window)) |
| 1323 | (isearch-done) |
| 1324 | (isearch-clean-overlays)) |
| 1325 | (isearch-done) |
| 1326 | (isearch-clean-overlays)))) |
| 1327 | (t;; otherwise nil |
| 1328 | (isearch-process-search-string key key))))) |
| 1329 | |
| 1330 | (defun isearch-quote-char () |
| 1331 | "Quote special characters for incremental search." |
| 1332 | (interactive) |
| 1333 | (let ((char (read-quoted-char (isearch-message t)))) |
| 1334 | ;; Assume character codes 0200 - 0377 stand for characters in some |
| 1335 | ;; single-byte character set, and convert them to Emacs |
| 1336 | ;; characters. |
| 1337 | (and enable-multibyte-characters |
| 1338 | (>= char ?\200) |
| 1339 | (<= char ?\377) |
| 1340 | (setq char (unibyte-char-to-multibyte char))) |
| 1341 | (isearch-process-search-char char))) |
| 1342 | |
| 1343 | (defun isearch-return-char () |
| 1344 | "Convert return into newline for incremental search. |
| 1345 | Obsolete." |
| 1346 | (interactive) |
| 1347 | (isearch-process-search-char ?\n)) |
| 1348 | |
| 1349 | (defun isearch-printing-char () |
| 1350 | "Add this ordinary printing character to the search string and search." |
| 1351 | (interactive) |
| 1352 | (let ((char last-command-char)) |
| 1353 | (if (= char ?\S-\ ) |
| 1354 | (setq char ?\ )) |
| 1355 | (if (and enable-multibyte-characters |
| 1356 | (>= char ?\200) |
| 1357 | (<= char ?\377)) |
| 1358 | (if (keyboard-coding-system) |
| 1359 | (isearch-process-search-multibyte-characters char) |
| 1360 | (isearch-process-search-char (unibyte-char-to-multibyte char))) |
| 1361 | (if current-input-method |
| 1362 | (isearch-process-search-multibyte-characters char) |
| 1363 | (isearch-process-search-char char))))) |
| 1364 | |
| 1365 | (defun isearch-whitespace-chars () |
| 1366 | "Match all whitespace chars, if in regexp mode. |
| 1367 | If you want to search for just a space, type \\<isearch-mode-map>\\[isearch-quote-char] SPC." |
| 1368 | (interactive) |
| 1369 | (if isearch-regexp |
| 1370 | (if (and search-whitespace-regexp (not isearch-within-brackets) |
| 1371 | (not isearch-invalid-regexp)) |
| 1372 | (isearch-process-search-string search-whitespace-regexp " ") |
| 1373 | (isearch-printing-char)) |
| 1374 | (progn |
| 1375 | ;; This way of doing word search doesn't correctly extend current search. |
| 1376 | ;; (setq isearch-word t) |
| 1377 | ;; (setq isearch-adjusted t) |
| 1378 | ;; (goto-char isearch-barrier) |
| 1379 | (isearch-printing-char)))) |
| 1380 | |
| 1381 | (defun isearch-process-search-char (char) |
| 1382 | ;; Append the char to the search string, update the message and re-search. |
| 1383 | (isearch-process-search-string |
| 1384 | (char-to-string char) |
| 1385 | (if (>= char ?\200) |
| 1386 | (char-to-string char) |
| 1387 | (isearch-text-char-description char)))) |
| 1388 | |
| 1389 | (defun isearch-process-search-string (string message) |
| 1390 | (setq isearch-string (concat isearch-string string) |
| 1391 | isearch-message (concat isearch-message message)) |
| 1392 | (isearch-search-and-update)) |
| 1393 | |
| 1394 | \f |
| 1395 | ;; Search Ring |
| 1396 | |
| 1397 | (defun isearch-ring-adjust1 (advance) |
| 1398 | ;; Helper for isearch-ring-adjust |
| 1399 | (let* ((ring (if isearch-regexp regexp-search-ring search-ring)) |
| 1400 | (length (length ring)) |
| 1401 | (yank-pointer-name (if isearch-regexp |
| 1402 | 'regexp-search-ring-yank-pointer |
| 1403 | 'search-ring-yank-pointer)) |
| 1404 | (yank-pointer (eval yank-pointer-name))) |
| 1405 | (if (zerop length) |
| 1406 | () |
| 1407 | (set yank-pointer-name |
| 1408 | (setq yank-pointer |
| 1409 | (mod (+ (or yank-pointer 0) |
| 1410 | (if advance -1 1)) |
| 1411 | length))) |
| 1412 | (setq isearch-string (nth yank-pointer ring) |
| 1413 | isearch-message (mapconcat 'isearch-text-char-description |
| 1414 | isearch-string ""))))) |
| 1415 | |
| 1416 | (defun isearch-ring-adjust (advance) |
| 1417 | ;; Helper for isearch-ring-advance and isearch-ring-retreat |
| 1418 | (isearch-ring-adjust1 advance) |
| 1419 | (if search-ring-update |
| 1420 | (progn |
| 1421 | (isearch-search) |
| 1422 | (isearch-update)) |
| 1423 | (isearch-edit-string) |
| 1424 | ) |
| 1425 | (isearch-push-state)) |
| 1426 | |
| 1427 | (defun isearch-ring-advance () |
| 1428 | "Advance to the next search string in the ring." |
| 1429 | ;; This could be more general to handle a prefix arg, but who would use it. |
| 1430 | (interactive) |
| 1431 | (isearch-ring-adjust 'advance)) |
| 1432 | |
| 1433 | (defun isearch-ring-retreat () |
| 1434 | "Retreat to the previous search string in the ring." |
| 1435 | (interactive) |
| 1436 | (isearch-ring-adjust nil)) |
| 1437 | |
| 1438 | (defun isearch-ring-advance-edit (n) |
| 1439 | "Insert the next element of the search history into the minibuffer. |
| 1440 | With prefix arg N, insert the Nth element." |
| 1441 | (interactive "p") |
| 1442 | (let* ((yank-pointer-name (if isearch-regexp |
| 1443 | 'regexp-search-ring-yank-pointer |
| 1444 | 'search-ring-yank-pointer)) |
| 1445 | (yank-pointer (eval yank-pointer-name)) |
| 1446 | (ring (if isearch-regexp regexp-search-ring search-ring)) |
| 1447 | (length (length ring))) |
| 1448 | (if (zerop length) |
| 1449 | () |
| 1450 | (set yank-pointer-name |
| 1451 | (setq yank-pointer |
| 1452 | (mod (- (or yank-pointer 0) n) |
| 1453 | length))) |
| 1454 | |
| 1455 | (delete-field) |
| 1456 | (insert (nth yank-pointer ring)) |
| 1457 | (goto-char (point-max))))) |
| 1458 | |
| 1459 | (defun isearch-ring-retreat-edit (n) |
| 1460 | "Insert the previous element of the search history into the minibuffer. |
| 1461 | With prefix arg N, insert the Nth element." |
| 1462 | (interactive "p") |
| 1463 | (isearch-ring-advance-edit (- n))) |
| 1464 | |
| 1465 | ;;(defun isearch-ring-adjust-edit (advance) |
| 1466 | ;; "Use the next or previous search string in the ring while in minibuffer." |
| 1467 | ;; (isearch-ring-adjust1 advance) |
| 1468 | ;; (erase-buffer) |
| 1469 | ;; (insert isearch-string)) |
| 1470 | |
| 1471 | ;;(defun isearch-ring-advance-edit () |
| 1472 | ;; (interactive) |
| 1473 | ;; (isearch-ring-adjust-edit 'advance)) |
| 1474 | |
| 1475 | ;;(defun isearch-ring-retreat-edit () |
| 1476 | ;; "Retreat to the previous search string in the ring while in the minibuffer." |
| 1477 | ;; (interactive) |
| 1478 | ;; (isearch-ring-adjust-edit nil)) |
| 1479 | |
| 1480 | |
| 1481 | (defun isearch-complete1 () |
| 1482 | ;; Helper for isearch-complete and isearch-complete-edit |
| 1483 | ;; Return t if completion OK, nil if no completion exists. |
| 1484 | (let* ((ring (if isearch-regexp regexp-search-ring search-ring)) |
| 1485 | (alist (mapcar (function (lambda (string) (list string))) ring)) |
| 1486 | (completion-ignore-case case-fold-search) |
| 1487 | (completion (try-completion isearch-string alist))) |
| 1488 | (cond |
| 1489 | ((eq completion t) |
| 1490 | ;; isearch-string stays the same |
| 1491 | t) |
| 1492 | ((or completion ; not nil, must be a string |
| 1493 | (= 0 (length isearch-string))) ; shouldn't have to say this |
| 1494 | (if (equal completion isearch-string) ;; no extension? |
| 1495 | (progn |
| 1496 | (if completion-auto-help |
| 1497 | (with-output-to-temp-buffer "*Isearch completions*" |
| 1498 | (display-completion-list |
| 1499 | (all-completions isearch-string alist)))) |
| 1500 | t) |
| 1501 | (and completion |
| 1502 | (setq isearch-string completion)))) |
| 1503 | (t |
| 1504 | (message "No completion") ; waits a second if in minibuffer |
| 1505 | nil)))) |
| 1506 | |
| 1507 | (defun isearch-complete () |
| 1508 | "Complete the search string from the strings on the search ring. |
| 1509 | The completed string is then editable in the minibuffer. |
| 1510 | If there is no completion possible, say so and continue searching." |
| 1511 | (interactive) |
| 1512 | (if (isearch-complete1) |
| 1513 | (isearch-edit-string) |
| 1514 | ;; else |
| 1515 | (sit-for 1) |
| 1516 | (isearch-update))) |
| 1517 | |
| 1518 | (defun isearch-complete-edit () |
| 1519 | "Same as `isearch-complete' except in the minibuffer." |
| 1520 | (interactive) |
| 1521 | (setq isearch-string (buffer-string)) |
| 1522 | (if (isearch-complete1) |
| 1523 | (progn |
| 1524 | (delete-field) |
| 1525 | (insert isearch-string)))) |
| 1526 | |
| 1527 | \f |
| 1528 | ;; The search status stack (and isearch window-local variables, not used). |
| 1529 | ;; Need a structure for this. |
| 1530 | |
| 1531 | (defun isearch-top-state () |
| 1532 | (let ((cmd (car isearch-cmds))) |
| 1533 | (setq isearch-string (car cmd) |
| 1534 | isearch-message (car (cdr cmd)) |
| 1535 | isearch-success (nth 3 cmd) |
| 1536 | isearch-forward (nth 4 cmd) |
| 1537 | isearch-other-end (nth 5 cmd) |
| 1538 | isearch-word (nth 6 cmd) |
| 1539 | isearch-invalid-regexp (nth 7 cmd) |
| 1540 | isearch-wrapped (nth 8 cmd) |
| 1541 | isearch-barrier (nth 9 cmd) |
| 1542 | isearch-within-brackets (nth 10 cmd) |
| 1543 | isearch-case-fold-search (nth 11 cmd)) |
| 1544 | (goto-char (car (cdr (cdr cmd)))))) |
| 1545 | |
| 1546 | (defun isearch-pop-state () |
| 1547 | (setq isearch-cmds (cdr isearch-cmds)) |
| 1548 | (isearch-top-state)) |
| 1549 | |
| 1550 | (defun isearch-push-state () |
| 1551 | (setq isearch-cmds |
| 1552 | (cons (list isearch-string isearch-message (point) |
| 1553 | isearch-success isearch-forward isearch-other-end |
| 1554 | isearch-word |
| 1555 | isearch-invalid-regexp isearch-wrapped isearch-barrier |
| 1556 | isearch-within-brackets isearch-case-fold-search) |
| 1557 | isearch-cmds))) |
| 1558 | |
| 1559 | \f |
| 1560 | ;; Message string |
| 1561 | |
| 1562 | (defun isearch-message (&optional c-q-hack ellipsis) |
| 1563 | ;; Generate and print the message string. |
| 1564 | (let ((cursor-in-echo-area ellipsis) |
| 1565 | (m (concat |
| 1566 | (isearch-message-prefix c-q-hack ellipsis isearch-nonincremental) |
| 1567 | isearch-message |
| 1568 | (isearch-message-suffix c-q-hack ellipsis) |
| 1569 | ))) |
| 1570 | (if c-q-hack |
| 1571 | m |
| 1572 | (let ((message-log-max nil)) |
| 1573 | (message "%s" m))))) |
| 1574 | |
| 1575 | (defun isearch-message-prefix (&optional c-q-hack ellipsis nonincremental) |
| 1576 | ;; If about to search, and previous search regexp was invalid, |
| 1577 | ;; check that it still is. If it is valid now, |
| 1578 | ;; let the message we display while searching say that it is valid. |
| 1579 | (and isearch-invalid-regexp ellipsis |
| 1580 | (condition-case () |
| 1581 | (progn (re-search-forward isearch-string (point) t) |
| 1582 | (setq isearch-invalid-regexp nil |
| 1583 | isearch-within-brackets nil)) |
| 1584 | (error nil))) |
| 1585 | ;; If currently failing, display no ellipsis. |
| 1586 | (or isearch-success (setq ellipsis nil)) |
| 1587 | (let ((m (concat (if isearch-success "" "failing ") |
| 1588 | (if (and isearch-wrapped |
| 1589 | (if isearch-forward |
| 1590 | (> (point) isearch-opoint) |
| 1591 | (< (point) isearch-opoint))) |
| 1592 | "over") |
| 1593 | (if isearch-wrapped "wrapped ") |
| 1594 | (if isearch-word "word " "") |
| 1595 | (if isearch-regexp "regexp " "") |
| 1596 | (if nonincremental "search" "I-search") |
| 1597 | (if isearch-forward "" " backward") |
| 1598 | (if current-input-method |
| 1599 | (concat " [" current-input-method-title "]: ") |
| 1600 | ": ") |
| 1601 | ))) |
| 1602 | (concat (upcase (substring m 0 1)) (substring m 1)))) |
| 1603 | |
| 1604 | |
| 1605 | (defun isearch-message-suffix (&optional c-q-hack ellipsis) |
| 1606 | (concat (if c-q-hack "^Q" "") |
| 1607 | (if isearch-invalid-regexp |
| 1608 | (concat " [" isearch-invalid-regexp "]") |
| 1609 | ""))) |
| 1610 | |
| 1611 | \f |
| 1612 | ;;; Searching |
| 1613 | |
| 1614 | (defun isearch-search () |
| 1615 | ;; Do the search with the current search string. |
| 1616 | (isearch-message nil t) |
| 1617 | (if (and (eq isearch-case-fold-search t) search-upper-case) |
| 1618 | (setq isearch-case-fold-search |
| 1619 | (isearch-no-upper-case-p isearch-string isearch-regexp))) |
| 1620 | (condition-case lossage |
| 1621 | (let ((inhibit-point-motion-hooks search-invisible) |
| 1622 | (inhibit-quit nil) |
| 1623 | (case-fold-search isearch-case-fold-search) |
| 1624 | (retry t)) |
| 1625 | (if isearch-regexp (setq isearch-invalid-regexp nil)) |
| 1626 | (setq isearch-within-brackets nil) |
| 1627 | (while retry |
| 1628 | (setq isearch-success |
| 1629 | (funcall |
| 1630 | (cond (isearch-word |
| 1631 | (if isearch-forward |
| 1632 | 'word-search-forward 'word-search-backward)) |
| 1633 | (isearch-regexp |
| 1634 | (if isearch-forward |
| 1635 | 're-search-forward 're-search-backward)) |
| 1636 | (t |
| 1637 | (if isearch-forward 'search-forward 'search-backward))) |
| 1638 | isearch-string nil t)) |
| 1639 | ;; Clear RETRY unless we matched some invisible text |
| 1640 | ;; and we aren't supposed to do that. |
| 1641 | (if (or (eq search-invisible t) |
| 1642 | (not isearch-success) |
| 1643 | (bobp) (eobp) |
| 1644 | (= (match-beginning 0) (match-end 0)) |
| 1645 | (not (isearch-range-invisible |
| 1646 | (match-beginning 0) (match-end 0)))) |
| 1647 | (setq retry nil))) |
| 1648 | (setq isearch-just-started nil) |
| 1649 | (if isearch-success |
| 1650 | (setq isearch-other-end |
| 1651 | (if isearch-forward (match-beginning 0) (match-end 0))))) |
| 1652 | |
| 1653 | (quit (isearch-unread ?\C-g) |
| 1654 | (setq isearch-success nil)) |
| 1655 | |
| 1656 | (invalid-regexp |
| 1657 | (setq isearch-invalid-regexp (car (cdr lossage))) |
| 1658 | (setq isearch-within-brackets (string-match "\\`Unmatched \\[" |
| 1659 | isearch-invalid-regexp)) |
| 1660 | (if (string-match |
| 1661 | "\\`Premature \\|\\`Unmatched \\|\\`Invalid " |
| 1662 | isearch-invalid-regexp) |
| 1663 | (setq isearch-invalid-regexp "incomplete input"))) |
| 1664 | (error |
| 1665 | ;; stack overflow in regexp search. |
| 1666 | (setq isearch-invalid-regexp (format "%s" lossage)))) |
| 1667 | |
| 1668 | (if isearch-success |
| 1669 | nil |
| 1670 | ;; Ding if failed this time after succeeding last time. |
| 1671 | (and (nth 3 (car isearch-cmds)) |
| 1672 | (ding)) |
| 1673 | (goto-char (nth 2 (car isearch-cmds))))) |
| 1674 | |
| 1675 | |
| 1676 | ;;; Called when opening an overlay, and we are still in isearch. |
| 1677 | (defun isearch-open-overlay-temporary (ov) |
| 1678 | (if (not (null (overlay-get ov 'isearch-open-invisible-temporary))) |
| 1679 | ;; Some modes would want to open the overlays temporary during |
| 1680 | ;; isearch in their own way, they should set the |
| 1681 | ;; `isearch-open-invisible-temporary' to a function doing this. |
| 1682 | (funcall (overlay-get ov 'isearch-open-invisible-temporary) ov nil) |
| 1683 | ;; Store the values for the `invisible' and `intangible' |
| 1684 | ;; properties, and then set them to nil. This way the text hidden |
| 1685 | ;; by this overlay becomes visible. |
| 1686 | |
| 1687 | ;; Do we really need to set the `intangible' property to t? Can we |
| 1688 | ;; have the point inside an overlay with an `intangible' property? |
| 1689 | ;; In 19.34 this does not exist so I cannot test it. |
| 1690 | (overlay-put ov 'isearch-invisible (overlay-get ov 'invisible)) |
| 1691 | (overlay-put ov 'isearch-intangible (overlay-get ov 'intangible)) |
| 1692 | (overlay-put ov 'invisible nil) |
| 1693 | (overlay-put ov 'intangible nil))) |
| 1694 | |
| 1695 | |
| 1696 | ;;; This is called at the end of isearch. It will open the overlays |
| 1697 | ;;; that contain the latest match. Obviously in case of a C-g the |
| 1698 | ;;; point returns to the original location which surely is not contain |
| 1699 | ;;; in any of these overlays, se we are safe in this case too. |
| 1700 | (defun isearch-open-necessary-overlays (ov) |
| 1701 | (let ((inside-overlay (and (> (point) (overlay-start ov)) |
| 1702 | (< (point) (overlay-end ov)))) |
| 1703 | ;; If this exists it means that the overlay was opened using |
| 1704 | ;; this function, not by us tweaking the overlay properties. |
| 1705 | (fct-temp (overlay-get ov 'isearch-open-invisible-temporary))) |
| 1706 | (when (or inside-overlay (not fct-temp)) |
| 1707 | ;; restore the values for the `invisible' and `intangible' |
| 1708 | ;; properties |
| 1709 | (overlay-put ov 'invisible (overlay-get ov 'isearch-invisible)) |
| 1710 | (overlay-put ov 'intangible (overlay-get ov 'isearch-intangible)) |
| 1711 | (overlay-put ov 'isearch-invisible nil) |
| 1712 | (overlay-put ov 'isearch-intangible nil)) |
| 1713 | (if inside-overlay |
| 1714 | (funcall (overlay-get ov 'isearch-open-invisible) ov) |
| 1715 | (if fct-temp |
| 1716 | (funcall fct-temp ov t))))) |
| 1717 | |
| 1718 | ;;; This is called when exiting isearch. It closes the temporary |
| 1719 | ;;; opened overlays, except the ones that contain the latest match. |
| 1720 | (defun isearch-clean-overlays () |
| 1721 | (when isearch-opened-overlays |
| 1722 | (mapc 'isearch-open-necessary-overlays isearch-opened-overlays) |
| 1723 | (setq isearch-opened-overlays nil))) |
| 1724 | |
| 1725 | |
| 1726 | (defun isearch-intersects-p (start0 end0 start1 end1) |
| 1727 | "Return t if regions START0..END0 and START1..END1 intersect." |
| 1728 | (or (and (>= start0 start1) (< start0 end1)) |
| 1729 | (and (> end0 start1) (<= end0 end1)) |
| 1730 | (and (>= start1 start0) (< start1 end0)) |
| 1731 | (and (> end1 start0) (<= end1 end0)))) |
| 1732 | |
| 1733 | |
| 1734 | ;;; Verify if the current match is outside of each element of |
| 1735 | ;;; `isearch-opened-overlays', if so close that overlay. |
| 1736 | |
| 1737 | (defun isearch-close-unnecessary-overlays (begin end) |
| 1738 | (let ((overlays isearch-opened-overlays)) |
| 1739 | (setq isearch-opened-overlays nil) |
| 1740 | (dolist (ov overlays) |
| 1741 | (if (isearch-intersects-p begin end (overlay-start ov) (overlay-end ov)) |
| 1742 | (push ov isearch-opened-overlays) |
| 1743 | (let ((fct-temp (overlay-get ov 'isearch-open-invisible-temporary))) |
| 1744 | (if fct-temp |
| 1745 | ;; If this exists it means that the overlay was opened |
| 1746 | ;; using this function, not by us tweaking the overlay |
| 1747 | ;; properties. |
| 1748 | (funcall fct-temp ov t) |
| 1749 | (overlay-put ov 'invisible (overlay-get ov 'isearch-invisible)) |
| 1750 | (overlay-put ov 'intangible (overlay-get ov 'isearch-intangible)) |
| 1751 | (overlay-put ov 'isearch-invisible nil) |
| 1752 | (overlay-put ov 'isearch-intangible nil))))))) |
| 1753 | |
| 1754 | |
| 1755 | (defun isearch-range-invisible (beg end) |
| 1756 | "Return t if all the text from BEG to END is invisible." |
| 1757 | (and (/= beg end) |
| 1758 | ;; Check that invisibility runs up to END. |
| 1759 | (save-excursion |
| 1760 | (goto-char beg) |
| 1761 | (let ( |
| 1762 | ;; can-be-opened keeps track if we can open some overlays. |
| 1763 | (can-be-opened (eq search-invisible 'open)) |
| 1764 | ;; the list of overlays that could be opened |
| 1765 | (crt-overlays nil)) |
| 1766 | (when (and can-be-opened isearch-hide-immediately) |
| 1767 | (isearch-close-unnecessary-overlays beg end)) |
| 1768 | ;; If the following character is currently invisible, |
| 1769 | ;; skip all characters with that same `invisible' property value. |
| 1770 | ;; Do that over and over. |
| 1771 | (while (and (< (point) end) |
| 1772 | (let ((prop |
| 1773 | (get-char-property (point) 'invisible))) |
| 1774 | (if (eq buffer-invisibility-spec t) |
| 1775 | prop |
| 1776 | (or (memq prop buffer-invisibility-spec) |
| 1777 | (assq prop buffer-invisibility-spec))))) |
| 1778 | (if (get-text-property (point) 'invisible) |
| 1779 | (progn |
| 1780 | (goto-char (next-single-property-change (point) 'invisible |
| 1781 | nil end)) |
| 1782 | ;; if text is hidden by an `invisible' text property |
| 1783 | ;; we cannot open it at all. |
| 1784 | (setq can-be-opened nil)) |
| 1785 | (unless (null can-be-opened) |
| 1786 | (let ((overlays (overlays-at (point))) |
| 1787 | ov-list |
| 1788 | o |
| 1789 | invis-prop) |
| 1790 | (while overlays |
| 1791 | (setq o (car overlays) |
| 1792 | invis-prop (overlay-get o 'invisible)) |
| 1793 | (if (if (eq buffer-invisibility-spec t) |
| 1794 | invis-prop |
| 1795 | (or (memq invis-prop buffer-invisibility-spec) |
| 1796 | (assq invis-prop buffer-invisibility-spec))) |
| 1797 | (if (overlay-get o 'isearch-open-invisible) |
| 1798 | (setq ov-list (cons o ov-list)) |
| 1799 | ;; We found one overlay that cannot be |
| 1800 | ;; opened, that means the whole chunk |
| 1801 | ;; cannot be opened. |
| 1802 | (setq can-be-opened nil))) |
| 1803 | (setq overlays (cdr overlays))) |
| 1804 | (if can-be-opened |
| 1805 | ;; It makes sense to append to the open |
| 1806 | ;; overlays list only if we know that this is |
| 1807 | ;; t. |
| 1808 | (setq crt-overlays (append ov-list crt-overlays))))) |
| 1809 | (goto-char (next-overlay-change (point))))) |
| 1810 | ;; See if invisibility reaches up thru END. |
| 1811 | (if (>= (point) end) |
| 1812 | (if (and (not (null can-be-opened)) (consp crt-overlays)) |
| 1813 | (progn |
| 1814 | (setq isearch-opened-overlays |
| 1815 | (append isearch-opened-overlays crt-overlays)) |
| 1816 | (mapc 'isearch-open-overlay-temporary crt-overlays) |
| 1817 | nil) |
| 1818 | t)))))) |
| 1819 | |
| 1820 | \f |
| 1821 | ;;; Highlighting |
| 1822 | |
| 1823 | (defvar isearch-overlay nil) |
| 1824 | |
| 1825 | (defun isearch-highlight (beg end) |
| 1826 | (unless (null search-highlight) |
| 1827 | (cond (isearch-overlay |
| 1828 | ;; Overlay already exists, just move it. |
| 1829 | (move-overlay isearch-overlay beg end (current-buffer))) |
| 1830 | |
| 1831 | (t |
| 1832 | ;; Overlay doesn't exist, create it. |
| 1833 | (setq isearch-overlay (make-overlay beg end)) |
| 1834 | (overlay-put isearch-overlay 'face isearch) |
| 1835 | (overlay-put isearch-overlay 'priority 1) ;higher than lazy overlays |
| 1836 | )))) |
| 1837 | |
| 1838 | (defun isearch-dehighlight (totally) |
| 1839 | (when isearch-overlay |
| 1840 | (delete-overlay isearch-overlay))) |
| 1841 | |
| 1842 | |
| 1843 | ;;; General utilities |
| 1844 | |
| 1845 | |
| 1846 | (defun isearch-no-upper-case-p (string regexp-flag) |
| 1847 | "Return t if there are no upper case chars in STRING. |
| 1848 | If REGEXP-FLAG is non-nil, disregard letters preceded by `\\' (but not `\\\\') |
| 1849 | since they have special meaning in a regexp." |
| 1850 | (let (quote-flag (i 0) (len (length string)) found) |
| 1851 | (while (and (not found) (< i len)) |
| 1852 | (let ((char (aref string i))) |
| 1853 | (if (and regexp-flag (eq char ?\\)) |
| 1854 | (setq quote-flag (not quote-flag)) |
| 1855 | (if (and (not quote-flag) (not (eq char (downcase char)))) |
| 1856 | (setq found t)))) |
| 1857 | (setq i (1+ i))) |
| 1858 | (not found))) |
| 1859 | |
| 1860 | ;; Portability functions to support various Emacs versions. |
| 1861 | |
| 1862 | (defun isearch-text-char-description (c) |
| 1863 | (cond |
| 1864 | ((< c ?\ ) (format "^%c" (+ c 64))) |
| 1865 | ((= c ?\^?) "^?") |
| 1866 | (t (char-to-string c)))) |
| 1867 | |
| 1868 | ;; General function to unread characters or events. |
| 1869 | ;; Also insert them in a keyboard macro being defined. |
| 1870 | (defun isearch-unread (&rest char-or-events) |
| 1871 | (mapc 'store-kbd-macro-event char-or-events) |
| 1872 | (setq unread-command-events |
| 1873 | (append char-or-events unread-command-events))) |
| 1874 | |
| 1875 | \f |
| 1876 | ;;; isearch-lazy-highlight feature |
| 1877 | ;;; by Bob Glickstein <http://www.zanshin.com/~bobg/> |
| 1878 | |
| 1879 | ;;; When active, *every* match for the current search string is |
| 1880 | ;;; highlighted: the current one using the normal isearch match color |
| 1881 | ;;; and all the others using `isearch-lazy-highlight-face'. The extra |
| 1882 | ;;; highlighting makes it easier to anticipate where the cursor will |
| 1883 | ;;; land each time you press C-s or C-r to repeat a pending search. |
| 1884 | ;;; Highlighting of these additional matches happens in a deferred |
| 1885 | ;;; fashion using "idle timers," so the cycles needed do not rob |
| 1886 | ;;; isearch of its usual snappy response. |
| 1887 | |
| 1888 | ;;; IMPLEMENTATION NOTE: This depends on some isearch internals. |
| 1889 | ;;; Specifically: |
| 1890 | ;;; - `isearch-update' is expected to be called (at least) every time |
| 1891 | ;;; the search string or window-start changes; |
| 1892 | ;;; - `isearch-string' is expected to contain the current search |
| 1893 | ;;; string as entered by the user; |
| 1894 | ;;; - the type of the current search is expected to be given by |
| 1895 | ;;; `isearch-word' and `isearch-regexp'; |
| 1896 | ;;; - the direction of the current search is expected to be given by |
| 1897 | ;;; `isearch-forward'; |
| 1898 | ;;; - the variable `isearch-invalid-regexp' is expected to be true |
| 1899 | ;;; iff `isearch-string' is an invalid regexp. |
| 1900 | |
| 1901 | (require 'timer) |
| 1902 | |
| 1903 | (defgroup isearch-lazy-highlight nil |
| 1904 | "Lazy highlighting feature for incremental search." |
| 1905 | :prefix "isearch-lazy-highlight-" |
| 1906 | :version "21.1" |
| 1907 | :group 'isearch) |
| 1908 | |
| 1909 | (defcustom isearch-lazy-highlight t |
| 1910 | "*Controls the lazy-highlighting during incremental searches. |
| 1911 | When non-nil, all text in the buffer matching the current search |
| 1912 | string is highlighted lazily (see `isearch-lazy-highlight-initial-delay' |
| 1913 | and `isearch-lazy-highlight-interval')." |
| 1914 | :type 'boolean |
| 1915 | :group 'isearch-lazy-highlight) |
| 1916 | |
| 1917 | (defcustom isearch-lazy-highlight-cleanup t |
| 1918 | "*Controls whether to remove extra highlighting after a search. |
| 1919 | If this is nil, extra highlighting can be \"manually\" removed with |
| 1920 | \\[isearch-lazy-highlight-cleanup]." |
| 1921 | :type 'boolean |
| 1922 | :group 'isearch-lazy-highlight) |
| 1923 | |
| 1924 | (defcustom isearch-lazy-highlight-initial-delay 0.25 |
| 1925 | "*Seconds to wait before beginning to lazily highlight all matches." |
| 1926 | :type 'number |
| 1927 | :group 'isearch-lazy-highlight) |
| 1928 | |
| 1929 | (defcustom isearch-lazy-highlight-interval 0 ; 0.0625 |
| 1930 | "*Seconds between lazily highlighting successive matches." |
| 1931 | :type 'number |
| 1932 | :group 'isearch-lazy-highlight) |
| 1933 | |
| 1934 | (defcustom isearch-lazy-highlight-max-at-a-time 20 |
| 1935 | "*Maximum matches to highlight at a time (for `isearch-lazy-highlight'). |
| 1936 | Larger values may reduce isearch's responsiveness to user input; |
| 1937 | smaller values make matches highlight slowly. |
| 1938 | A value of nil means highlight all matches." |
| 1939 | :type '(choice (const :tag "All" nil) |
| 1940 | (integer :tag "Some")) |
| 1941 | :group 'isearch-lazy-highlight) |
| 1942 | |
| 1943 | (defgroup isearch-faces nil |
| 1944 | "Lazy highlighting feature for incremental search." |
| 1945 | :version "21.1" |
| 1946 | :group 'isearch) |
| 1947 | |
| 1948 | (defface isearch |
| 1949 | '((((type tty pc) (class color)) |
| 1950 | (:background "magenta4" :foreground "cyan1")) |
| 1951 | (((class color) (background light)) |
| 1952 | ;; The background must not be too dark, for that means |
| 1953 | ;; the character is hard to see when the cursor is there. |
| 1954 | (:background "magenta2" :foreground "lightskyblue1")) |
| 1955 | (((class color) (background dark)) |
| 1956 | (:background "palevioletred2" :foreground "brown4")) |
| 1957 | (t (:inverse-video t))) |
| 1958 | "Face for highlighting Isearch matches." |
| 1959 | :group 'isearch-faces) |
| 1960 | (defvar isearch 'isearch) |
| 1961 | |
| 1962 | (defface isearch-lazy-highlight-face |
| 1963 | '((((type tty pc) (class color)) |
| 1964 | (:background "turquoise3")) |
| 1965 | (((class color) (background light)) |
| 1966 | (:background "paleturquoise")) |
| 1967 | (((class color) (background dark)) |
| 1968 | (:background "paleturquoise4")) |
| 1969 | (t (:underline t))) |
| 1970 | "Face for lazy highlighting of Isearch matches other than the current one." |
| 1971 | :group 'isearch-faces) |
| 1972 | (defvar isearch-lazy-highlight-face 'isearch-lazy-highlight-face) |
| 1973 | |
| 1974 | (defvar isearch-lazy-highlight-overlays nil) |
| 1975 | (defvar isearch-lazy-highlight-wrapped nil) |
| 1976 | (defvar isearch-lazy-highlight-start nil) |
| 1977 | (defvar isearch-lazy-highlight-end nil) |
| 1978 | (defvar isearch-lazy-highlight-timer nil) |
| 1979 | (defvar isearch-lazy-highlight-last-string nil) |
| 1980 | (defvar isearch-lazy-highlight-window nil) |
| 1981 | (defvar isearch-lazy-highlight-window-start nil) |
| 1982 | (defvar isearch-lazy-highlight-case-fold-search nil) |
| 1983 | (defvar isearch-lazy-highlight-regexp nil) |
| 1984 | |
| 1985 | (defun isearch-lazy-highlight-cleanup (&optional force) |
| 1986 | "Stop lazy highlighting and remove extra highlighting from current buffer. |
| 1987 | FORCE non-nil means do it whether or not `isearch-lazy-highlight-cleanup' |
| 1988 | is nil. This function is called when exiting an incremental search if |
| 1989 | `isearch-lazy-highlight-cleanup' is non-nil." |
| 1990 | (interactive '(t)) |
| 1991 | (if (or force isearch-lazy-highlight-cleanup) |
| 1992 | (while isearch-lazy-highlight-overlays |
| 1993 | (delete-overlay (car isearch-lazy-highlight-overlays)) |
| 1994 | (setq isearch-lazy-highlight-overlays |
| 1995 | (cdr isearch-lazy-highlight-overlays)))) |
| 1996 | (when isearch-lazy-highlight-timer |
| 1997 | (cancel-timer isearch-lazy-highlight-timer) |
| 1998 | (setq isearch-lazy-highlight-timer nil))) |
| 1999 | |
| 2000 | (defun isearch-lazy-highlight-new-loop () |
| 2001 | "Cleanup any previous `isearch-lazy-highlight' loop and begin a new one. |
| 2002 | This happens when `isearch-update' is invoked (which can cause the |
| 2003 | search string to change or the window to scroll)." |
| 2004 | (when (and isearch-lazy-highlight |
| 2005 | (sit-for 0) ;make sure (window-start) is credible |
| 2006 | (or (not (equal isearch-string |
| 2007 | isearch-lazy-highlight-last-string)) |
| 2008 | (not (eq (selected-window) |
| 2009 | isearch-lazy-highlight-window)) |
| 2010 | (not (eq isearch-lazy-highlight-case-fold-search |
| 2011 | isearch-case-fold-search)) |
| 2012 | (not (eq isearch-lazy-highlight-regexp |
| 2013 | isearch-regexp)) |
| 2014 | (not (= (window-start) |
| 2015 | isearch-lazy-highlight-window-start)))) |
| 2016 | ;; something important did indeed change |
| 2017 | (isearch-lazy-highlight-cleanup t) ;kill old loop & remove overlays |
| 2018 | (when (not isearch-invalid-regexp) |
| 2019 | (setq isearch-lazy-highlight-window (selected-window) |
| 2020 | isearch-lazy-highlight-window-start (window-start) |
| 2021 | isearch-lazy-highlight-start (point) |
| 2022 | isearch-lazy-highlight-end (point) |
| 2023 | isearch-lazy-highlight-last-string isearch-string |
| 2024 | isearch-lazy-highlight-case-fold-search isearch-case-fold-search |
| 2025 | isearch-lazy-highlight-regexp isearch-regexp |
| 2026 | isearch-lazy-highlight-wrapped nil) |
| 2027 | (setq isearch-lazy-highlight-timer |
| 2028 | (run-with-idle-timer isearch-lazy-highlight-initial-delay nil |
| 2029 | 'isearch-lazy-highlight-update))))) |
| 2030 | |
| 2031 | (defun isearch-lazy-highlight-search () |
| 2032 | "Search ahead for the next or previous match, for lazy highlighting. |
| 2033 | Attempt to do the search exactly the way the pending isearch would." |
| 2034 | (let ((case-fold-search isearch-case-fold-search) |
| 2035 | (choices (cond (isearch-word |
| 2036 | '(word-search-forward . word-search-backward)) |
| 2037 | (isearch-regexp |
| 2038 | '(re-search-forward . re-search-backward)) |
| 2039 | (t |
| 2040 | '(search-forward . search-backward))))) |
| 2041 | (funcall (if isearch-forward |
| 2042 | (car choices) |
| 2043 | (cdr choices)) |
| 2044 | isearch-string |
| 2045 | (if isearch-forward |
| 2046 | (if isearch-lazy-highlight-wrapped |
| 2047 | isearch-lazy-highlight-start |
| 2048 | (window-end)) |
| 2049 | (if isearch-lazy-highlight-wrapped |
| 2050 | isearch-lazy-highlight-end |
| 2051 | (window-start))) |
| 2052 | t))) |
| 2053 | |
| 2054 | (defun isearch-lazy-highlight-update () |
| 2055 | "Update highlighting of other matches for current search." |
| 2056 | (let ((max isearch-lazy-highlight-max-at-a-time) |
| 2057 | (looping t) |
| 2058 | nomore) |
| 2059 | (save-excursion |
| 2060 | (save-match-data |
| 2061 | (goto-char (if isearch-forward |
| 2062 | isearch-lazy-highlight-end |
| 2063 | isearch-lazy-highlight-start)) |
| 2064 | (while looping |
| 2065 | (let ((found (isearch-lazy-highlight-search))) |
| 2066 | (when max |
| 2067 | (setq max (1- max)) |
| 2068 | (if (<= max 0) |
| 2069 | (setq looping nil))) |
| 2070 | (if found |
| 2071 | (let ((mb (match-beginning 0)) |
| 2072 | (me (match-end 0))) |
| 2073 | (if (= mb me) ;zero-length match |
| 2074 | (forward-char 1) |
| 2075 | |
| 2076 | ;; non-zero-length match |
| 2077 | (let ((ov (make-overlay mb me))) |
| 2078 | (overlay-put ov 'face isearch-lazy-highlight-face) |
| 2079 | (overlay-put ov 'priority 0) ;lower than main overlay |
| 2080 | (overlay-put ov 'window (selected-window)) |
| 2081 | (push ov isearch-lazy-highlight-overlays))) |
| 2082 | (if isearch-forward |
| 2083 | (setq isearch-lazy-highlight-end (point)) |
| 2084 | (setq isearch-lazy-highlight-start (point)))) |
| 2085 | |
| 2086 | ;; not found |
| 2087 | (if isearch-lazy-highlight-wrapped |
| 2088 | (setq looping nil |
| 2089 | nomore t) |
| 2090 | (setq isearch-lazy-highlight-wrapped t) |
| 2091 | (if isearch-forward |
| 2092 | (progn |
| 2093 | (setq isearch-lazy-highlight-end (window-start)) |
| 2094 | (goto-char (window-start))) |
| 2095 | (setq isearch-lazy-highlight-start (window-end)) |
| 2096 | (goto-char (window-end))))))) |
| 2097 | (unless nomore |
| 2098 | (setq isearch-lazy-highlight-timer |
| 2099 | (run-at-time isearch-lazy-highlight-interval nil |
| 2100 | 'isearch-lazy-highlight-update))))))) |
| 2101 | |
| 2102 | (defun isearch-resume (search regexp word forward message case-fold) |
| 2103 | "Resume an incremental search. |
| 2104 | SEARCH is the string or regexp searched for. |
| 2105 | REGEXP non-nil means the resumed search was a regexp search. |
| 2106 | WORD non-nil means resume a word search. |
| 2107 | FORWARD non-nil means resume a forward search. |
| 2108 | MESSAGE is the echo-area message recorded for the search resumed. |
| 2109 | CASE-FOLD non-nil means the search was case-insensitive." |
| 2110 | (isearch-mode forward regexp nil nil word) |
| 2111 | (setq isearch-string search |
| 2112 | isearch-message message |
| 2113 | isearch-case-fold-search case-fold) |
| 2114 | (isearch-search)) |
| 2115 | |
| 2116 | ;;; isearch.el ends here |