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6c56c80b | 1 | ;;; iswitchb.el --- switch between buffers using substrings |
962a4216 RS |
2 | |
3 | ;; Copyright (C) 1996, 1997 Free Software Foundation, Inc. | |
4 | ||
5 | ;; Author: Stephen Eglen <stephene@cogs.susx.ac.uk> | |
6 | ;; Maintainer: Stephen Eglen <stephene@cogs.susx.ac.uk> | |
962a4216 RS |
7 | ;; Keywords: extensions |
8 | ;; location: http://www.cogs.susx.ac.uk/users/stephene/emacs | |
9 | ||
6c56c80b RS |
10 | ;; This file is part of GNU Emacs. |
11 | ||
12 | ;; GNU Emacs is free software; you can redistribute it and/or modify | |
962a4216 RS |
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 | ||
6c56c80b | 17 | ;; GNU Emacs is distributed in the hope that it will be useful, |
962a4216 RS |
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 | ||
962a4216 RS |
27 | ;;; Installation: |
28 | ||
962a4216 RS |
29 | ;; To get the functions in this package bound to keys, do |
30 | ;; (iswitchb-default-keybindings) | |
962a4216 RS |
31 | |
32 | ;;; Commentary: | |
33 | ||
34 | ;; As you type in a substring, the list of buffers currently matching | |
35 | ;; the substring are displayed as you type. The list is ordered so | |
36 | ;; that the most recent buffers visited come at the start of the list. | |
37 | ;; The buffer at the start of the list will be the one visited when | |
38 | ;; you press return. By typing more of the substring, the list is | |
39 | ;; narrowed down so that gradually the buffer you want will be at the | |
40 | ;; top of the list. Alternatively, you can use C-s an C-r to rotate | |
41 | ;; buffer names in the list until the one you want is at the top of | |
42 | ;; the list. Completion is also available so that you can see what is | |
43 | ;; common to all of the matching buffers as you type. | |
44 | ||
45 | ;; This code is similar to a couple of other packages. Michael R Cook | |
46 | ;; <mcook@cognex.com wrote a similar buffer switching package, but | |
47 | ;; does exact matching rather than substring matching on buffer names. | |
48 | ;; I also modified a couple of functions from icomplete.el to provide | |
49 | ;; the completion feedback in the minibuffer. | |
50 | ||
51 | ;;; Example | |
52 | ||
53 | ;;If I have two buffers called "123456" and "123", with "123456" the | |
54 | ;;most recent, when I use iswitchb, I first of all get presented with | |
55 | ;;the default buffer (xxx) to switch to: | |
56 | ;; | |
57 | ;; iswitch {default xxx} | |
58 | ;; | |
59 | ;; If I then press 2: | |
60 | ;; iswitch 2[3]{123456,123} | |
61 | ;; | |
62 | ;; The list in {} are the matching buffers, most recent first (buffers | |
63 | ;; visible in the current frame are put at the end of the list by | |
64 | ;; default). At any time I can select the item at the head of the | |
65 | ;; list by pressing RET. I can also bring the put the first element | |
66 | ;; at the end of the list by pressing C-s, or put the last element at | |
67 | ;; the head of the list by pressing C-r. The item in [] indicates | |
68 | ;; what can be added to my input by pressing TAB. In this case, I | |
69 | ;; will get "3" added to my input. So, press TAB: | |
70 | ;; iswitch 23{123456,123} | |
71 | ;; | |
72 | ;; At this point, I still have two matching buffers. | |
73 | ;; If I want the first buffer in the list, I simply press RET. If I | |
74 | ;; wanted the second in the list, I could press C-s to move it to the | |
75 | ;; top of the list and then RET to select it. | |
76 | ;; | |
77 | ;;However, If I type 4, I only have one match left: | |
78 | ;; iswitch 234[123456] [Matched] | |
79 | ;; | |
80 | ;;Since there is only one matching buffer left, it is given in [] and we | |
81 | ;;see the text [Matched] afterwards. I can now press TAB or RET to go | |
82 | ;;to that buffer. | |
83 | ;; | |
84 | ;; If however, I now type "a": | |
85 | ;; iswitch 234a [No match] | |
86 | ;; There are no matching buffers. If I press RET or TAB, I can be | |
87 | ;; prompted to create a new buffer called "234a". | |
88 | ;; | |
89 | ;; Of course, where this function comes in really useful is when you | |
90 | ;; can specify the buffer using only a few keystrokes. In the above | |
91 | ;; example, the quickest way to get to the "123456" buffer would be | |
92 | ;; just to type 4 and then RET (assuming there isnt any newer buffer | |
93 | ;; with 4 in its name). | |
94 | ||
95 | ;; To see a full list of all matching buffers in a separate buffer, | |
96 | ;; hit ? or press TAB when there are no further completions to the | |
97 | ;; substring. | |
98 | ||
99 | ;; | |
100 | ;; See the doc string of iswitchb for full keybindings and features. | |
101 | ;; (describe-function 'iswitchb) | |
102 | ||
103 | ;;; Customisation | |
104 | ||
105 | ;; See the User Variables section below for easy ways to change the | |
106 | ;; functionality of the program. | |
107 | ;; To modify the keybindings, use the hook provided. For example: | |
108 | ;;(add-hook 'iswitchb-define-mode-map-hook | |
109 | ;; 'iswitchb-my-keys) | |
110 | ;; | |
111 | ;;(defun iswitchb-my-keys () | |
112 | ;; "Add my keybings for iswitchb." | |
113 | ;; (define-key iswitchb-mode-map " " 'iswitchb-next-match) | |
114 | ;; ) | |
115 | ;; | |
116 | ;; Seeing all the matching buffers. | |
117 | ;; If you have many matching buffers, they may not all fit onto one | |
118 | ;; line of the minibuffer. In this case, you should use rsz-mini | |
119 | ;; (resize-minibuffer-mode). You can also limit iswitchb so that it | |
120 | ;; only shows a certain number of lines -- see the documentation for | |
121 | ;; `iswitchb-minibuffer-setup-hook'. | |
122 | ||
123 | ||
124 | ;; Changing the list of buffers. | |
125 | ||
126 | ;; By default, the list of current buffers is most recent first, | |
127 | ;; oldest last, with the exception that the buffers visible in the | |
128 | ;; current frame are put at the end of the list. A hook exists to | |
129 | ;; allow other functions to order the list. For example, if you add: | |
130 | ;; | |
131 | ;; (add-hook 'iswitchb-make-buflist-hook 'iswitchb-summaries-to-end) | |
132 | ;; | |
133 | ;; then all buffers matching "Summary" are moved to the end of the | |
134 | ;; list. (I find this handy for keeping the INBOX Summary and so on | |
135 | ;; out of the way.) It also moves buffers matching "output\*$" to the | |
136 | ;; end of the list (these are created by AUC TeX when compiling.) | |
137 | ;; Other functions could be made available which alter the list of | |
138 | ;; matching buffers (either deleting or rearranging elements.) | |
139 | ||
140 | ;; Font-Lock | |
141 | ||
142 | ;; If you have font-lock loaded, the first matching buffer is | |
143 | ;; highlighted. To switch this off, set (setq iswitchb-use-fonts nil) | |
144 | ;; I don't use font-lock that much, so I've hardcoded the faces. If | |
145 | ;; this is too harsh, let me know. Colouring of the matching buffer | |
146 | ;; name was suggested by Carsten Dominik (dominik@strw.leidenuniv.nl) | |
147 | ||
148 | ;;; Comparison with iswitch-buffer | |
149 | ||
150 | ;; This package is a rewrite of iswitch-buffer, using the minibuffer | |
151 | ;; rather than the echo area. The advantages of using the minibuffer | |
152 | ;; are several: | |
153 | ;; o minibuffer has more powerful editing facilities | |
154 | ;; o doesnt interfere with other packages that use the echo area | |
155 | ;; o *Messages* buffer doesnt get filled up with all of the messages that | |
156 | ;; go to the modeline | |
157 | ;; o cursor is in the minibuffer, which somehow looks right. | |
158 | ;; o minibuffer can be resized dynamically to show all the possible matching | |
159 | ;; buffers rather than just the first line's worth (using rsz-mini). | |
160 | ;; | |
161 | ;; Disadvantages: | |
162 | ;; o cant change the prompt to indicate status of searching (eg whether | |
163 | ;; regexp searching is currently on). | |
164 | ||
165 | ||
166 | ;;; Acknowledgements | |
167 | ||
168 | ;; Thanks to Jari Aalto <jari.aalto@poboxes.com> for help with the | |
169 | ;; first version of this package, iswitch-buffer. Thanks also to many | |
170 | ;; others for testing earlier versions. | |
171 | ||
172 | ;;; Code: | |
173 | ||
962a4216 RS |
174 | ;;; User Variables |
175 | ;; | |
176 | ;; These are some things you might want to change. | |
177 | ||
178 | (defvar iswitchb-case case-fold-search | |
179 | "*Non-nil if searching of buffer names should ignore case.") | |
180 | ||
181 | (defvar iswitchb-buffer-ignore | |
182 | '("^ ") | |
6c56c80b RS |
183 | "*List of regexps or functions matching buffer names to ignore. |
184 | For example, traditional behavior is not to list buffers whose names begin | |
185 | with a space, for which the regexp is `^ '. See the source file for | |
962a4216 RS |
186 | example functions that filter buffernames.") |
187 | ||
188 | ;;; Examples for setting the value of iswitchb-buffer-ignore | |
189 | ;(defun -c-mode (name) | |
190 | ; "Ignore all c mode buffers -- example function for iswitchb." | |
191 | ; (save-excursion | |
192 | ; (set-buffer name) | |
193 | ; (string-match "^C$" mode-name))) | |
194 | ||
195 | ;(setq iswitchb-buffer-ignore '("^ " ignore-c-mode)) | |
196 | ;(setq iswitchb-buffer-ignore '("^ " "\\.c$" "\\.h$")) | |
197 | ||
198 | ||
199 | (defvar iswitchb-default-method 'always-frame | |
6c56c80b | 200 | "*How to switch to new buffer when using `iswitchb-buffer'. |
962a4216 RS |
201 | Possible values: |
202 | `samewindow' Show new buffer in same window | |
203 | `otherwindow' Show new buffer in another window (same frame) | |
888472e0 | 204 | `display' Display buffer in another window without switching to it |
962a4216 RS |
205 | `otherframe' Show new buffer in another frame |
206 | `maybe-frame' If a buffer is visible in another frame, prompt to ask if you | |
207 | you want to see the buffer in the same window of the current | |
208 | frame or in the other frame. | |
209 | `always-frame' If a buffer is visible in another frame, raise that | |
210 | frame. Otherwise, visit the buffer in the same window.") | |
211 | ||
212 | (defvar iswitchb-regexp nil | |
6c56c80b RS |
213 | "*Non-nil means that `iswitchb' will do regexp matching. |
214 | Value can be toggled within `iswitchb'.") | |
962a4216 RS |
215 | |
216 | (defvar iswitchb-newbuffer t | |
217 | "*Non-nil means create new buffer if no buffer matches substring. | |
218 | See also `iswitchb-prompt-newbuffer'.") | |
219 | ||
220 | (defvar iswitchb-prompt-newbuffer t | |
221 | "*Non-nil means prompt user to confirm before creating new buffer. | |
222 | See also `iswitchb-newbuffer'.") | |
223 | ||
224 | (defvar iswitchb-define-mode-map-hook nil | |
225 | "*Hook to define keys in `iswitchb-mode-map' for extra keybindings.") | |
226 | ||
227 | ||
228 | (defvar iswitchb-use-fonts t | |
229 | "*Non-nil means use fonts for showing first match.") | |
230 | ||
231 | (defvar iswitchb-make-buflist-hook nil | |
232 | "*Hook to run when list of matching buffers is created.") | |
233 | ||
234 | ||
235 | (defvar iswitchb-method nil | |
6c56c80b | 236 | "*Stores the method for viewing the selected buffer. |
888472e0 | 237 | Its value is one of `samewindow', `otherwindow', `display', `otherframe', |
6c56c80b RS |
238 | `maybe-frame' or `always-frame'. See `iswitchb-default-method' for |
239 | details of values.") | |
962a4216 RS |
240 | |
241 | (defvar iswitchb-all-frames 'visible | |
242 | "*Argument to pass to `walk-windows' when finding visible buffers. | |
243 | See documentation of `walk-windows' for useful values.") | |
244 | ||
245 | ;;; THINGS TO DO / BUGS | |
246 | ||
247 | ;; In Xemacs, the default buffer is not shown the first time you enter | |
248 | ; the minibuffer, but if you type a char and then delete a char, the | |
249 | ; default appears. The first time we enter the minibuffer in XEmacs, | |
250 | ; the default msg is not displayed, presumably because the hook is not | |
251 | ; being called. I have put in a temporary hack therefore at the | |
252 | ; bottom of this file. | |
253 | ; | |
254 | ; There is also a problem with the backspace key in XEmacs, so I have | |
255 | ; bound it to the normal backward-delete-char. | |
256 | ||
257 | ;; iswitch-buffer features Not yet implemented: | |
258 | ; C-f Quit iswitch and drop into find-file | |
259 | ||
260 | ||
261 | ;; Do we need the variable iswitchb-use-mycompletion? | |
262 | ||
263 | ||
264 | ;;; Internal Variables | |
265 | (defvar iswitchb-minibuffer-setup-hook nil | |
266 | "*Iswitchb-specific customization of minibuffer setup. | |
267 | ||
6c56c80b | 268 | This hook is run during minibuffer setup iff `iswitchb' will be active. |
962a4216 RS |
269 | It is intended for use in customizing iswitchb for interoperation |
270 | with other packages. For instance: | |
271 | ||
272 | \(add-hook 'iswitchb-minibuffer-setup-hook | |
273 | \(function | |
274 | \(lambda () | |
275 | \(make-local-variable 'resize-minibuffer-window-max-height) | |
276 | \(setq resize-minibuffer-window-max-height 3)))) | |
277 | ||
278 | will constrain rsz-mini to a maximum minibuffer height of 3 lines when | |
6c56c80b | 279 | iswitchb is running. Copied from `icomplete-minibuffer-setup-hook'.") |
962a4216 RS |
280 | |
281 | (defvar iswitchb-eoinput 1 | |
282 | "Point where minibuffer input ends and completion info begins. | |
6c56c80b | 283 | Copied from `icomplete-eoinput'.") |
962a4216 RS |
284 | (make-variable-buffer-local 'iswitchb-eoinput) |
285 | ||
286 | ||
287 | (defvar iswitchb-buflist nil | |
288 | "Stores the current list of buffers that will be searched through. | |
289 | The list is ordered, so that the most recent buffers come first, | |
290 | although by default, the buffers visible in the current frame are put | |
291 | at the end of the list. Created by `iswitchb-make-buflist'.") | |
292 | ||
293 | ;; todo -- is this necessary? | |
294 | ||
295 | (defvar iswitchb-use-mycompletion nil | |
6c56c80b RS |
296 | "Non-nil means use `iswitchb-buffer' completion feedback. |
297 | Should only be set to t by iswitchb functions, so that it doesn't | |
298 | interfere with other minibuffer usage.") | |
962a4216 RS |
299 | |
300 | (defvar iswitchb-change-word-sub nil | |
301 | "Private variable used by `iswitchb-word-matching-substring'.") | |
302 | ||
303 | ||
304 | (defvar iswitchb-common-match-string nil | |
305 | "Stores the string that is common to all matching buffers.") | |
306 | ||
307 | ||
308 | (defvar iswitchb-rescan nil | |
309 | "Non-nil means we need to regenerate the list of matching buffers.") | |
310 | ||
311 | (defvar iswitchb-text nil | |
312 | "Stores the users string as it is typed in.") | |
313 | ||
314 | (defvar iswitchb-matches nil | |
315 | "List of buffers currenly matching `iswitchb-text'.") | |
316 | ||
317 | (defvar iswitchb-default-buffer nil | |
318 | "Default buffer to switch to.") | |
319 | ||
320 | (defvar iswitchb-mode-map nil | |
6c56c80b | 321 | "Keymap for `iswitchb-buffer'.") |
962a4216 RS |
322 | |
323 | (defvar iswitchb-history nil | |
6c56c80b | 324 | "History of buffers selected using `iswitchb-buffer'.") |
962a4216 RS |
325 | |
326 | (defvar iswitchb-exit nil | |
6c56c80b RS |
327 | "Flag to monitor how `iswitchb-buffer' exits. |
328 | If equal to `takeprompt', we use the prompt as the buffer name to be | |
329 | selected.") | |
962a4216 RS |
330 | |
331 | (defvar iswitchb-buffer-ignore-orig nil | |
332 | "Stores original value of `iswitchb-buffer-ignore'.") | |
333 | ||
334 | (defvar iswitchb-xemacs (string-match "XEmacs" (emacs-version)) | |
335 | "Non-nil if we are running XEmacs. Otherwise, assume we are running Emacs.") | |
336 | ||
337 | ||
338 | ;;; FUNCTIONS | |
339 | ||
340 | ||
341 | ;;; ISWITCHB KEYMAP | |
342 | (defun iswitchb-define-mode-map () | |
6c56c80b | 343 | "Set up the keymap for `iswitchb-buffer'." |
962a4216 RS |
344 | (interactive) |
345 | (let (map) | |
346 | ;; generated every time so that it can inheret new functions. | |
347 | ;;(or iswitchb-mode-map | |
348 | ||
349 | (setq map (copy-keymap minibuffer-local-map)) | |
350 | (define-key map "?" 'iswitchb-completion-help) | |
351 | (define-key map "\C-s" 'iswitchb-next-match) | |
352 | (define-key map "\C-r" 'iswitchb-prev-match) | |
353 | (define-key map "\t" 'iswitchb-complete) | |
354 | (define-key map "\C-j" 'iswitchb-select-buffer-text) | |
355 | (define-key map "\C-t" 'iswitchb-toggle-regexp) | |
356 | ;;(define-key map "\C-a" 'iswitchb-toggle-ignore) | |
357 | (define-key map "\C-c" 'iswitchb-toggle-case) | |
358 | (setq iswitchb-mode-map map) | |
359 | (run-hooks 'iswitchb-define-mode-map-hook) | |
360 | )) | |
361 | ||
362 | ||
363 | ||
364 | ;;; MAIN FUNCTION | |
365 | (defun iswitchb () | |
366 | "Switch to buffer matching a substring. | |
367 | As you type in a string, all of the buffers matching the string are | |
368 | displayed. When you have found the buffer you want, it can then be | |
369 | selected. As you type, most keys have their normal keybindings, | |
370 | except for the following: | |
371 | \\<iswitchb-mode-map> | |
372 | ||
373 | RET Select the buffer at the front of the list of matches. If the | |
6c56c80b | 374 | list is empty, possibly prompt to create new buffer. |
962a4216 RS |
375 | |
376 | \\[iswitchb-select-buffer-text] Select the current prompt as the buffer. | |
377 | If no buffer is found, prompt for a new one. | |
378 | ||
379 | \\[iswitchb-next-match] Put the first element at the end of the list. | |
380 | \\[iswitchb-prev-match] Put the last element at the start of the list. | |
381 | \\[iswitchb-complete] Complete a common suffix to the current string that | |
382 | matches all buffers. If there is only one match, select that buffer. | |
383 | If there is no common suffix, show a list of all matching buffers | |
384 | in a separate window. | |
385 | \\[iswitchb-toggle-regexp] Toggle rexep searching. | |
386 | \\[iswitchb-toggle-case] Toggle case-sensitive searching of buffer names. | |
6c56c80b | 387 | \\[iswitchb-completion-help] Show list of matching buffers in separate window." |
962a4216 RS |
388 | ;;\\[iswitchb-toggle-ignore] Toggle ignoring certain buffers (see \ |
389 | ;;`iswitchb-buffer-ignore') | |
390 | ||
391 | (let | |
392 | ( | |
393 | prompt | |
394 | buf-sel | |
395 | iswitchb-final-text | |
396 | (minibuffer-confirm-incomplete nil) ;XEmacs todo: prevent `;confirm' | |
397 | (icomplete-mode nil) ;; prevent icomplete starting up | |
398 | (minibuffer-local-completion-map minibuffer-local-completion-map) | |
399 | ;; can only use fonts if they have been bound. | |
400 | (iswitchb-use-fonts (and iswitchb-use-fonts | |
401 | (boundp 'font-lock-comment-face) | |
402 | (boundp 'font-lock-function-name-face))) | |
403 | ) | |
404 | ||
405 | (iswitchb-define-mode-map) | |
406 | (setq minibuffer-local-completion-map iswitchb-mode-map) | |
407 | ||
408 | (setq iswitchb-exit nil) | |
409 | (setq iswitchb-rescan t) | |
410 | (setq iswitchb-text "") | |
411 | (setq iswitchb-matches nil) | |
412 | ;;(setq iswitchb-default-buffer (buffer-name (other-buffer))) | |
413 | (setq prompt (format "iswitch ")) | |
414 | (iswitchb-make-buflist) | |
415 | (setq iswitchb-default-buffer (format "%s" (car iswitchb-buflist))) | |
416 | ||
417 | ;; highlight the default. | |
418 | (if iswitchb-use-fonts | |
419 | (put-text-property 0 (length iswitchb-default-buffer) | |
420 | 'face | |
421 | 'font-lock-function-name-face | |
422 | iswitchb-default-buffer)) | |
423 | ||
424 | ;; prompt the user for the buffer name | |
425 | (setq iswitchb-final-text (completing-read prompt | |
426 | ;;nil | |
427 | '(("dummy".1)) | |
428 | ;;("2".2) ("3".3)) | |
429 | nil nil | |
430 | nil;init string | |
431 | 'iswitchb-history)) | |
432 | ;;(message "chosen text %s" iswitchb-final-text) | |
433 | ;; Choose the buffer name: either the text typed in, or the head | |
434 | ;; of the list of matches | |
435 | (if (or | |
436 | (eq iswitchb-exit 'takeprompt) | |
437 | (null iswitchb-matches)) | |
438 | (setq buf-sel iswitchb-final-text) | |
439 | ;; else take head of list | |
440 | (setq buf-sel (car iswitchb-matches))) | |
441 | ||
442 | ;; Or possibly choose the default buffer | |
443 | (if (equal iswitchb-final-text "") | |
444 | (setq buf-sel iswitchb-default-buffer)) | |
445 | ||
446 | ;; View the buffer | |
447 | (message "go to buf %s" buf-sel) | |
448 | ||
449 | (if (get-buffer buf-sel) | |
450 | ;; buffer exists, so view it and then exit | |
451 | (iswitchb-visit-buffer buf-sel) | |
452 | ;; else buffer doesnt exist | |
453 | (iswitchb-possible-new-buffer buf-sel)) | |
454 | ||
455 | )) | |
456 | ||
457 | ||
458 | ;;; COMPLETION CODE | |
459 | ||
460 | (defun iswitchb-set-common-completion () | |
6c56c80b RS |
461 | "Find common completion of `iswitchb-text' in `iswitchb-matches'. |
462 | The result is stored in `iswitchb-common-match-string'." | |
962a4216 RS |
463 | |
464 | (let* (val) | |
465 | (setq iswitchb-common-match-string nil) | |
466 | (if (and iswitchb-matches | |
467 | (stringp iswitchb-text) | |
468 | (> (length iswitchb-text) 0)) | |
469 | (if (setq val (iswitchb-find-common-substring | |
470 | iswitchb-matches iswitchb-text)) | |
471 | (setq iswitchb-common-match-string val))) | |
472 | val | |
473 | )) | |
474 | ||
475 | ||
476 | (defun iswitchb-complete () | |
477 | "Try and complete the current pattern amongst the buffer names." | |
478 | (interactive) | |
479 | (let (res) | |
480 | (cond ((not iswitchb-matches) | |
481 | ||
482 | ;; todo | |
483 | ;;(message "No buffer completions.") | |
484 | ;;(sit-for 0.3) | |
485 | (iswitchb-completion-help) | |
486 | ) | |
487 | ||
488 | ((eq 1 (length iswitchb-matches)) | |
489 | ;; only one choice, so select it. | |
490 | (exit-minibuffer)) | |
491 | ||
492 | (t | |
493 | ;; else there could be some completions | |
494 | ||
495 | (setq res (iswitchb-find-common-substring | |
496 | iswitchb-matches iswitchb-text)) | |
497 | (if (and (not (memq res '(t nil))) | |
498 | (not (eq res iswitchb-text))) | |
499 | ;; found something to complete, so put it in the minibuff. | |
500 | (progn | |
501 | (setq iswitchb-rescan nil) | |
502 | (delete-region (point-min) (point)) | |
503 | (insert res)) | |
504 | ;; else nothing to complete | |
505 | (iswitchb-completion-help) | |
506 | ) | |
507 | ) | |
508 | ))) | |
509 | ||
510 | ||
511 | ||
512 | ;;; TOGGLE FUNCTIONS | |
513 | ||
514 | (defun iswitchb-toggle-case () | |
515 | "Toggle the value of `iswitchb-case'." | |
516 | (interactive) | |
517 | (setq iswitchb-case (not iswitchb-case)) | |
518 | ;; ask for list to be regenerated. | |
519 | (setq iswitchb-rescan t) | |
520 | ) | |
521 | ||
522 | (defun iswitchb-toggle-regexp () | |
523 | "Toggle the value of `iswitchb-regexp'." | |
524 | (interactive) | |
525 | (setq iswitchb-regexp (not iswitchb-regexp)) | |
526 | ;; ask for list to be regenerated. | |
527 | (setq iswitchb-rescan t) | |
528 | ) | |
529 | ||
530 | ||
531 | (defun iswitchb-toggle-ignore () | |
532 | "Toggle ignoring buffers specified with `iswitchb-buffer-ignore'." | |
533 | (interactive) | |
534 | (if iswitchb-buffer-ignore | |
535 | (progn | |
536 | (setq iswitchb-buffer-ignore-orig iswitchb-buffer-ignore) | |
537 | (setq iswitchb-buffer-ignore nil) | |
538 | ) | |
539 | ;; else | |
540 | (setq iswitchb-buffer-ignore iswitchb-buffer-ignore-orig) | |
541 | ) | |
542 | ;; ask for list to be regenerated. | |
543 | (setq iswitchb-rescan t) | |
544 | ) | |
545 | ||
546 | ||
547 | (defun iswitchb-select-buffer-text () | |
6c56c80b RS |
548 | "Select the buffer named by the prompt. |
549 | If no buffer exactly matching the prompt exists, maybe create a new one." | |
962a4216 RS |
550 | (interactive) |
551 | (setq iswitchb-exit 'takeprompt) | |
552 | (exit-minibuffer)) | |
553 | ||
554 | ||
555 | (defun iswitchb-next-match () | |
556 | "Put first element of `iswitchb-matches' at the end of the list." | |
557 | (interactive) | |
558 | (let ((tmp (car iswitchb-matches))) | |
559 | (setq iswitchb-matches (cdr iswitchb-matches)) | |
560 | (setq iswitchb-matches (append iswitchb-matches (list tmp))) | |
561 | (setq iswitchb-rescan nil) | |
562 | )) | |
563 | ||
564 | (defun iswitchb-prev-match () | |
565 | "Put last element of `iswitchb-matches' at the front of the list." | |
566 | (interactive) | |
567 | (setq iswitchb-matches (iswitchb-rotate-list iswitchb-matches)) | |
568 | (setq iswitchb-rescan nil) | |
569 | ) | |
570 | ||
571 | ||
572 | ||
573 | ||
574 | ;;; CREATE LIST OF ALL CURRENT BUFFERS | |
575 | ||
576 | (defun iswitchb-make-buflist () | |
6c56c80b RS |
577 | "Set `iswitchb-buflist' to the current list of buffers. |
578 | Currently visible buffers are put at the end of the list." | |
962a4216 RS |
579 | (setq iswitchb-buflist |
580 | (let (buflist | |
581 | iswitchb-current-buffers) | |
582 | (setq iswitchb-current-buffers (iswitchb-get-buffers-in-frames)) | |
583 | (setq buflist (mapcar 'buffer-name (buffer-list))) | |
584 | (setq buflist (delq nil | |
585 | (mapcar | |
586 | '(lambda (x) | |
587 | (if (not (iswitchb-ignore-buffername-p x)) | |
588 | x)) | |
589 | buflist))) | |
590 | (mapcar 'iswitchb-to-end iswitchb-current-buffers) | |
591 | ||
592 | (run-hooks 'iswitchb-make-buflist-hook) | |
593 | buflist))) | |
594 | ||
595 | ||
596 | (defun iswitchb-to-end (elem) | |
597 | "Move ELEM to the end of BUFLIST." | |
598 | (setq buflist (delq elem buflist)) | |
599 | ;;(message "removing %s" elem) | |
600 | (setq buflist (append buflist (list elem)))) | |
601 | ||
602 | ||
603 | ||
604 | ||
605 | (defun iswitchb-get-buffers-in-frames (&optional current) | |
962a4216 RS |
606 | "Return the list of buffers that are visible in the current frame. |
607 | If optional argument `current' is given, restrict searching to the | |
608 | current frame, rather than all frames, regardless of value of | |
609 | `iswitchb-all-frames'." | |
962a4216 | 610 | (let ((iswitchb-bufs-in-frame nil)) |
962a4216 RS |
611 | (walk-windows 'iswitchb-get-bufname nil |
612 | (if current | |
613 | nil | |
614 | iswitchb-all-frames)) | |
615 | iswitchb-bufs-in-frame)) | |
616 | ||
617 | ||
618 | (defun iswitchb-get-bufname (win) | |
619 | "Used by `iswitchb-get-buffers-in-frames' to walk through all windows." | |
620 | (setq iswitchb-bufs-in-frame | |
621 | (cons (buffer-name (window-buffer win)) | |
622 | iswitchb-bufs-in-frame))) | |
623 | ||
624 | ||
625 | ;;; FIND MATCHING BUFFERS | |
626 | ||
627 | (defun iswitchb-set-matches () | |
628 | "Set `iswitchb-matches' to the list of buffers matching prompt." | |
962a4216 RS |
629 | (if iswitchb-rescan |
630 | (setq iswitchb-matches | |
631 | (let* ((buflist iswitchb-buflist) | |
632 | ) | |
633 | (if (> (length iswitchb-text) 0) | |
634 | (iswitchb-get-matched-buffers iswitchb-text iswitchb-regexp | |
635 | buflist) | |
636 | ;; else no text, no matches | |
637 | nil))))) | |
638 | ||
6c56c80b RS |
639 | (defun iswitchb-get-matched-buffers (regexp &optional string-format buffer-list) |
640 | "Return matched buffers. | |
888472e0 | 641 | If STRING-FORMAT is non-nil, consider REGEXP as string. |
6c56c80b | 642 | BUFFER-LIST can be list of buffers or list of strings." |
962a4216 RS |
643 | (let* ((case-fold-search iswitchb-case) |
644 | ;; need reverse since we are building up list backwards | |
645 | (list (reverse buffer-list)) | |
646 | (do-string (stringp (car list))) | |
647 | name | |
648 | ret | |
649 | ) | |
650 | (mapcar | |
651 | (function | |
652 | (lambda (x) | |
653 | ||
654 | (if do-string | |
655 | (setq name x) ;We already have the name | |
656 | (setq name (buffer-name x))) | |
657 | ||
658 | (cond | |
659 | ((and (or (and string-format (string-match regexp name)) | |
660 | (and (null string-format) | |
661 | (string-match (regexp-quote regexp) name))) | |
662 | ||
663 | ;; todo (not (iswitchb-ignore-buffername-p name)) | |
664 | ) | |
665 | (setq ret (cons name ret)) | |
666 | )))) | |
667 | list) | |
668 | ret | |
669 | )) | |
670 | ||
671 | ||
672 | ||
673 | ||
674 | (defun iswitchb-ignore-buffername-p (bufname) | |
675 | "Return t if the buffer BUFNAME should be ignored." | |
676 | (let ((data (match-data)) | |
677 | (re-list iswitchb-buffer-ignore) | |
678 | ignorep | |
679 | nextstr | |
680 | ) | |
681 | (while re-list | |
682 | (setq nextstr (car re-list)) | |
683 | (cond | |
684 | ((stringp nextstr) | |
685 | (if (string-match nextstr bufname) | |
686 | (progn | |
687 | (setq ignorep t) | |
688 | (setq re-list nil)))) | |
689 | ((fboundp nextstr) | |
690 | (if (funcall nextstr bufname) | |
691 | (progn | |
692 | (setq ignorep t) | |
693 | (setq re-list nil)) | |
694 | )) | |
695 | ) | |
696 | (setq re-list (cdr re-list))) | |
697 | (store-match-data data) | |
698 | ||
699 | ;; return the result | |
700 | ignorep) | |
701 | ) | |
702 | ||
703 | ||
704 | ||
705 | (defun iswitchb-word-matching-substring (word) | |
706 | "Return part of WORD before 1st match to `iswitchb-change-word-sub'. | |
707 | If `iswitchb-change-word-sub' cannot be found in WORD, return nil." | |
708 | (let ((case-fold-search iswitchb-case)) | |
709 | (let ((m (string-match iswitchb-change-word-sub word))) | |
710 | (if m | |
711 | (substring word m) | |
712 | ;; else no match | |
713 | nil)))) | |
714 | ||
715 | ||
716 | ||
717 | ||
718 | ||
719 | ||
720 | (defun iswitchb-find-common-substring (lis subs) | |
721 | "Return common string following SUBS in each element of LIS." | |
722 | (let (res | |
723 | alist | |
724 | iswitchb-change-word-sub | |
725 | ) | |
726 | (setq iswitchb-change-word-sub | |
727 | (if iswitchb-regexp | |
728 | subs | |
729 | (regexp-quote subs))) | |
730 | (setq res (mapcar 'iswitchb-word-matching-substring lis)) | |
731 | (setq res (delq nil res)) ;; remove any nil elements (shouldnt happen) | |
732 | (setq alist (mapcar 'iswitchb-makealist res)) ;; could use an OBARRAY | |
733 | ||
734 | ;; try-completion returns t if there is an exact match. | |
735 | (let ((completion-ignore-case iswitchb-case)) | |
736 | ||
737 | (try-completion subs alist) | |
738 | ))) | |
739 | ||
740 | ||
741 | (defun iswitchb-makealist (res) | |
742 | "Return dotted pair (RES . 1)." | |
743 | (cons res 1)) | |
744 | ||
745 | ;; from Wayne Mesard <wmesard@esd.sgi.com> | |
746 | (defun iswitchb-rotate-list (lis) | |
747 | "Destructively removes the last element from LIS. | |
748 | Return the modified list with the last element prepended to it." | |
749 | (if (<= (length lis) 1) | |
750 | lis | |
751 | (let ((las lis) | |
752 | (prev lis)) | |
753 | (while (consp (cdr las)) | |
754 | (setq prev las | |
755 | las (cdr las))) | |
756 | (setcdr prev nil) | |
757 | (cons (car las) lis)) | |
758 | )) | |
759 | ||
760 | ||
761 | (defun iswitchb-completion-help () | |
762 | "Show possible completions in a *Buffer Completions* buffer." | |
763 | ;; we could allow this buffer to be used to select match, but I think | |
764 | ;; choose-completion-string will need redifining, so it just inserts | |
765 | ;; choice with out any previous input. | |
766 | (interactive) | |
767 | (let ((completion-setup-hook nil) ;disable fancy highlight/selection. | |
768 | ) | |
769 | (with-output-to-temp-buffer "*Buffer Completions*" | |
770 | (if iswitchb-xemacs | |
771 | ||
772 | ;; XEmacs extents are put on by default, doesn't seem to be | |
773 | ;; any way of switching them off. | |
774 | (display-completion-list (if iswitchb-matches | |
775 | iswitchb-matches | |
776 | iswitchb-buflist) | |
777 | :help-string "iswitchb " | |
778 | :activate-callback | |
779 | '(lambda (x y z) | |
780 | (message "doesnt work yet, sorry!"))) | |
781 | ;; else running Emacs | |
782 | (display-completion-list (if iswitchb-matches | |
783 | iswitchb-matches | |
784 | iswitchb-buflist)) | |
785 | )))) | |
786 | ||
787 | ;;; VISIT CHOSEN BUFFER | |
788 | (defun iswitchb-visit-buffer (buffer) | |
789 | "Visit buffer named BUFFER according to `iswitchb-method'." | |
790 | (let* (win newframe) | |
791 | (cond | |
792 | ((eq iswitchb-method 'samewindow) | |
793 | (switch-to-buffer buffer)) | |
794 | ||
795 | ((memq iswitchb-method '(always-frame maybe-frame)) | |
796 | (cond | |
797 | ((and (setq win (iswitchb-window-buffer-p buffer)) | |
798 | (or (eq iswitchb-method 'always-frame) | |
799 | (y-or-n-p "Jump to frame? "))) | |
800 | (setq newframe (window-frame win)) | |
801 | (raise-frame newframe) | |
802 | (select-frame newframe) | |
803 | (select-window win) | |
804 | (if (not iswitchb-xemacs) | |
805 | ;; reposition mouse to make frame active. not needed in XEmacs | |
806 | ;; This line came from the other-frame defun in Emacs. | |
807 | (set-mouse-position (selected-frame) (1- (frame-width)) 0)) | |
808 | ) | |
809 | (t | |
810 | ;; No buffer in other frames... | |
811 | (switch-to-buffer buffer) | |
812 | ))) | |
813 | ||
814 | ||
815 | ||
816 | ((eq iswitchb-method 'otherwindow) | |
817 | (switch-to-buffer-other-window buffer)) | |
818 | ||
888472e0 RS |
819 | ((eq iswitchb-method 'display) |
820 | (display-buffer buffer)) | |
821 | ||
962a4216 RS |
822 | ((eq iswitchb-method 'otherframe) |
823 | (progn | |
824 | (switch-to-buffer-other-frame buffer) | |
825 | (if (not iswitchb-xemacs) | |
826 | (set-mouse-position (selected-frame) (1- (frame-width)) 0)) | |
827 | ) | |
828 | ) ))) | |
829 | ||
830 | (defun iswitchb-possible-new-buffer (buf) | |
831 | "Possibly create and visit a new buffer called BUF." | |
832 | ||
833 | (let ((newbufcreated)) | |
834 | (if (and iswitchb-newbuffer | |
835 | (or | |
836 | (not iswitchb-prompt-newbuffer) | |
837 | ||
838 | (and iswitchb-prompt-newbuffer | |
839 | (y-or-n-p | |
840 | (format | |
841 | "No buffer matching `%s', create one? " | |
842 | buf))))) | |
843 | ;; then create a new buffer | |
844 | (progn | |
845 | (setq newbufcreated (get-buffer-create buf)) | |
846 | (if (fboundp 'set-buffer-major-mode) | |
847 | (set-buffer-major-mode newbufcreated)) | |
848 | (iswitchb-visit-buffer newbufcreated)) | |
849 | ;; else wont create new buffer | |
850 | (message (format "no buffer matching `%s'" buf)) | |
851 | ))) | |
852 | ||
853 | (defun iswitchb-window-buffer-p (buffer) | |
6c56c80b RS |
854 | "Return window pointer if BUFFER is visible in another frame. |
855 | If BUFFER is visible in the current frame, return nil." | |
962a4216 | 856 | (interactive) |
962a4216 RS |
857 | (let ((blist (iswitchb-get-buffers-in-frames 'current))) |
858 | ;;If the buffer is visible in current frame, return nil | |
859 | (if (memq buffer blist) | |
860 | nil | |
861 | ;; maybe in other frame... | |
862 | (get-buffer-window buffer 'visible) | |
863 | ))) | |
864 | ||
6c56c80b | 865 | ;;;###autoload |
962a4216 | 866 | (defun iswitchb-default-keybindings () |
6c56c80b | 867 | "Set up default keybindings for `iswitchb-buffer'. |
962a4216 RS |
868 | Call this function to override the normal bindings." |
869 | (interactive) | |
870 | (global-set-key "\18b" 'iswitchb-buffer) | |
871 | (global-set-key "\184b" 'iswitchb-buffer-other-window) | |
888472e0 | 872 | (global-set-key "\184\ f" 'iswitchb-display-buffer) |
962a4216 RS |
873 | (global-set-key "\185b" 'iswitchb-buffer-other-frame)) |
874 | ||
875 | ||
876 | ||
877 | ;;;###autoload | |
878 | (defun iswitchb-buffer () | |
879 | "Switch to another buffer. | |
880 | ||
881 | The buffer name is selected interactively by typing a substring. The | |
882 | buffer is displayed according to `iswitchb-default-method' -- the | |
883 | default is to show it in the same window, unless it is already visible | |
6c56c80b RS |
884 | in another frame. |
885 | For details of keybindings, do `\\[describe-function] iswitchb'." | |
962a4216 RS |
886 | (interactive) |
887 | (setq iswitchb-method iswitchb-default-method) | |
888 | (iswitchb-entry)) | |
889 | ||
890 | ||
891 | ;;;###autoload | |
892 | (defun iswitchb-buffer-other-window () | |
893 | "Switch to another buffer and show it in another window. | |
894 | The buffer name is selected interactively by typing a substring. | |
6c56c80b | 895 | For details of keybindings, do `\\[describe-function] iswitchb'." |
962a4216 RS |
896 | (interactive) |
897 | (setq iswitchb-method 'otherwindow) | |
898 | (iswitchb-entry)) | |
899 | ||
900 | ||
901 | ||
888472e0 RS |
902 | ;;;###autoload |
903 | (defun iswitchb-display-buffer () | |
904 | "Display a buffer in another window but don't select it. | |
905 | The buffer name is selected interactively by typing a substring. | |
906 | For details of keybindings, do `\\[describe-function] iswitchb'." | |
907 | (interactive) | |
908 | (setq iswitchb-method 'display) | |
909 | (iswitchb-entry)) | |
910 | ||
911 | ||
912 | ||
962a4216 RS |
913 | ;;;###autoload |
914 | (defun iswitchb-buffer-other-frame () | |
915 | "Switch to another buffer and show it in another frame. | |
916 | The buffer name is selected interactively by typing a substring. | |
6c56c80b | 917 | For details of keybindings, do `\\[describe-function] iswitchb'." |
962a4216 RS |
918 | (interactive) |
919 | (setq iswitchb-method 'otherframe) | |
920 | (iswitchb-entry)) | |
921 | ||
922 | ||
923 | ||
924 | (defun iswitchb-entry () | |
6c56c80b | 925 | "Simply fall into `iswitchb' -- the main function." |
962a4216 RS |
926 | (iswitchb)) |
927 | ||
928 | ||
929 | ||
930 | ||
931 | ||
932 | ;;; XEMACS HACK FOR SHOWING DEFAULT BUFFER | |
933 | ||
934 | ;; The first time we enter the minibuffer, Emacs puts up the default | |
935 | ;; buffer to switch to, but XEmacs doesnt -- presumably there is a | |
936 | ;; subtle difference in the two, either in icomplete or somewhere | |
937 | ;; else. The default is shown for both whenever we delete all of our | |
938 | ;; text though, indicating its just a problem the first time we enter | |
939 | ;; the function. To solve this, we use another entry hook for emacs | |
940 | ;; to show the default the first time we enter the minibuffer. | |
941 | ||
942 | (defun iswitchb-init-Xemacs-trick () | |
6c56c80b RS |
943 | "Display default buffer when first entering minibuffer. |
944 | This is a hack for XEmacs, and should really be handled by `iswitchb-exhibit'." | |
962a4216 RS |
945 | (if (iswitchb-entryfn-p) |
946 | (progn | |
947 | (iswitchb-show-default-buffer) | |
948 | (goto-char (point-min))))) | |
949 | ||
950 | ;; add this hook for Xemacs only. | |
951 | (if iswitchb-xemacs | |
952 | (add-hook 'iswitchb-minibuffer-setup-hook | |
953 | 'iswitchb-init-Xemacs-trick)) | |
954 | ||
955 | ||
956 | ;;; XEMACS / BACKSPACE key | |
957 | ;; For some reason, if the backspace key is pressed in xemacs, the | |
958 | ;; line gets confused, so I've added a simple key definition to make | |
959 | ;; backspace act like the normal delete key. | |
960 | ||
961 | (defun iswitchb-xemacs-backspacekey () | |
962 | "Bind backspace to `backward-delete-char'." | |
963 | (define-key iswitchb-mode-map '[backspace] 'backward-delete-char) | |
964 | (define-key iswitchb-mode-map '[(meta backspace)] 'backward-kill-word) | |
965 | ) | |
966 | ||
967 | ||
968 | (if iswitchb-xemacs | |
969 | (add-hook 'iswitchb-define-mode-map-hook | |
970 | 'iswitchb-xemacs-backspacekey)) | |
971 | ||
972 | ||
973 | ||
974 | ;;; ICOMPLETE TYPE CODE | |
975 | ||
976 | (defun iswitchb-exhibit () | |
6c56c80b | 977 | "Find matching buffers and display a list in the minibuffer. |
962a4216 RS |
978 | Copied from `icomplete-exhibit' with two changes: |
979 | 1. It prints a default buffer name when there is no text yet entered. | |
980 | 2. It calls my completion routine rather than the standard completion." | |
981 | ||
982 | (if iswitchb-use-mycompletion | |
983 | (let ((contents (buffer-substring (point-min)(point-max))) | |
984 | (buffer-undo-list t)) | |
985 | (save-excursion | |
986 | (goto-char (point-max)) | |
987 | ; Register the end of input, so we | |
988 | ; know where the extra stuff | |
989 | ; (match-status info) begins: | |
990 | (if (not (boundp 'iswitchb-eoinput)) | |
991 | ;; In case it got wiped out by major mode business: | |
992 | (make-local-variable 'iswitchb-eoinput)) | |
993 | (setq iswitchb-eoinput (point)) | |
994 | ;; Update the list of matches | |
995 | (setq iswitchb-text contents) | |
996 | (iswitchb-set-matches) | |
997 | (setq iswitchb-rescan t) | |
998 | (iswitchb-set-common-completion) | |
999 | ||
1000 | ;; Insert the match-status information: | |
1001 | (if (> (point-max) 1) | |
1002 | (insert-string | |
1003 | (iswitchb-completions | |
1004 | contents | |
1005 | minibuffer-completion-table | |
1006 | minibuffer-completion-predicate | |
1007 | (not minibuffer-completion-confirm))) | |
1008 | ;; else put in default | |
1009 | (iswitchb-show-default-buffer)) | |
1010 | )))) | |
1011 | ||
1012 | (defun iswitchb-show-default-buffer () | |
1013 | "Insert the default buffer to switch to." | |
1014 | ;; insert done this way to preserve any text-propertes. | |
1015 | (insert (concat " {" iswitchb-default-buffer "} [Default]"))) | |
1016 | ||
1017 | (defun iswitchb-completions | |
1018 | (name candidates predicate require-match) | |
1019 | "Return the string that is displayed after the user's text. | |
1020 | Modified from `icomplete-completions'." | |
1021 | ||
1022 | (let ((comps iswitchb-matches) | |
1023 | ; "-determined" - only one candidate | |
1024 | (open-bracket-determined (if require-match "(" "[")) | |
1025 | (close-bracket-determined (if require-match ")" "]")) | |
1026 | ;"-prospects" - more than one candidate | |
1027 | (open-bracket-prospects "{") | |
1028 | (close-bracket-prospects "}") | |
1029 | first | |
1030 | ) | |
1031 | ||
1032 | (if (and iswitchb-use-fonts comps) | |
1033 | (progn | |
1034 | (setq first (car comps)) | |
1035 | (setq first (format "%s" first)) | |
1036 | (put-text-property 0 (length first) 'face | |
1037 | (if (eq (length comps) 1) | |
1038 | 'font-lock-comment-face | |
1039 | 'font-lock-function-name-face) | |
1040 | first) | |
1041 | (setq comps (cons first (cdr comps))) | |
1042 | )) | |
1043 | ||
1044 | (cond ((null comps) (format " %sNo match%s" | |
1045 | open-bracket-determined | |
1046 | close-bracket-determined)) | |
1047 | ||
1048 | ((null (cdr comps)) ;one match | |
1049 | (concat (if (and (> (length (car comps)) | |
1050 | (length name))) | |
1051 | (concat open-bracket-determined | |
1052 | ;; when there is one match, show the | |
1053 | ;; matching buffer name in full | |
1054 | (car comps) | |
1055 | close-bracket-determined) | |
1056 | "") | |
1057 | (if (not iswitchb-use-fonts) " [Matched]") | |
1058 | )) | |
1059 | (t ;multiple matches | |
1060 | (let* ( | |
1061 | ;;(most (try-completion name candidates predicate)) | |
1062 | (most nil) | |
1063 | (most-len (length most)) | |
1064 | most-is-exact | |
1065 | first | |
1066 | (alternatives | |
1067 | (apply | |
1068 | (function concat) | |
1069 | (cdr (apply | |
1070 | (function nconc) | |
1071 | (mapcar '(lambda (com) | |
1072 | (if (= (length com) most-len) | |
1073 | ;; Most is one exact match, | |
1074 | ;; note that and leave out | |
1075 | ;; for later indication: | |
1076 | (progn | |
1077 | (setq most-is-exact t) | |
1078 | ()) | |
1079 | (list "," | |
1080 | (substring com | |
1081 | most-len)))) | |
1082 | comps)))))) | |
1083 | ||
1084 | (concat | |
1085 | ||
1086 | ;; put in common completion item -- what you get by | |
1087 | ;; pressing tab | |
1088 | (if (> (length iswitchb-common-match-string) (length name)) | |
1089 | (concat open-bracket-determined | |
1090 | (substring iswitchb-common-match-string | |
1091 | (length name)) | |
1092 | close-bracket-determined) | |
1093 | ) | |
1094 | ;; end of partial matches... | |
1095 | ||
1096 | ;; think this bit can be ignored. | |
1097 | (and (> most-len (length name)) | |
1098 | (concat open-bracket-determined | |
1099 | (substring most (length name)) | |
1100 | close-bracket-determined)) | |
1101 | ||
1102 | ;; list all alternatives | |
1103 | open-bracket-prospects | |
1104 | (if most-is-exact | |
1105 | (concat "," alternatives) | |
1106 | alternatives) | |
1107 | close-bracket-prospects))) | |
1108 | ))) | |
1109 | ||
1110 | (defun iswitchb-minibuffer-setup () | |
6c56c80b RS |
1111 | "Set up minibuffer for `iswitchb-buffer'. |
1112 | Copied from `icomplete-minibuffer-setup-hook'." | |
962a4216 RS |
1113 | (if (iswitchb-entryfn-p) |
1114 | (progn | |
1115 | ||
1116 | (make-local-variable 'iswitchb-use-mycompletion) | |
1117 | (setq iswitchb-use-mycompletion t) | |
1118 | (make-local-hook 'pre-command-hook) | |
1119 | (add-hook 'pre-command-hook | |
1120 | 'iswitchb-pre-command | |
1121 | nil t) | |
1122 | (make-local-hook 'post-command-hook) | |
1123 | (add-hook 'post-command-hook | |
1124 | 'iswitchb-post-command | |
1125 | nil t) | |
1126 | ||
1127 | (run-hooks 'iswitchb-minibuffer-setup-hook) | |
1128 | ) | |
1129 | )) | |
1130 | ||
1131 | ||
1132 | (defun iswitchb-pre-command () | |
6c56c80b | 1133 | "Run before command in `iswitchb-buffer'." |
962a4216 RS |
1134 | (iswitchb-tidy)) |
1135 | ||
1136 | ||
1137 | (defun iswitchb-post-command () | |
6c56c80b | 1138 | "Run after command in `iswitchb-buffer'." |
962a4216 RS |
1139 | (iswitchb-exhibit) |
1140 | ) | |
1141 | ||
1142 | ||
1143 | ||
1144 | (defun iswitchb-tidy () | |
1145 | "Remove completions display, if any, prior to new user input. | |
1146 | Copied from `icomplete-tidy'." | |
1147 | ||
1148 | (if (and (boundp 'iswitchb-eoinput) | |
1149 | iswitchb-eoinput) | |
1150 | ||
1151 | (if (> iswitchb-eoinput (point-max)) | |
1152 | ;; Oops, got rug pulled out from under us - reinit: | |
1153 | (setq iswitchb-eoinput (point-max)) | |
1154 | (let ((buffer-undo-list buffer-undo-list )) ; prevent entry | |
1155 | (delete-region iswitchb-eoinput (point-max)))) | |
1156 | ||
1157 | ;; Reestablish the local variable 'cause minibuffer-setup is weird: | |
1158 | (make-local-variable 'iswitchb-eoinput) | |
1159 | (setq iswitchb-eoinput 1))) | |
1160 | ||
1161 | ||
1162 | (defun iswitchb-entryfn-p () | |
6c56c80b | 1163 | "Return non-nil if `this-command' shows we are using `iswitchb-buffer'." |
962a4216 | 1164 | (and (symbolp this-command) ; ignore lambda functions |
662659f0 RS |
1165 | (memq this-command |
1166 | '(iswitchb-buffer | |
1167 | iswitchb-buffer-other-frame | |
1168 | iswitchb-display-buffer | |
1169 | iswitchb-buffer-other-window)))) | |
962a4216 RS |
1170 | |
1171 | (defun iswitchb-summaries-to-end () | |
6c56c80b RS |
1172 | "Move the summaries to the end of the list. |
1173 | This is an example function which can be hooked on to | |
1174 | `iswitchb-make-buflist-hook'. Any buffer matching the regexps | |
1175 | `Summary' or `output\*$'are put to the end of the list." | |
962a4216 RS |
1176 | (let ((summaries (delq nil (mapcar |
1177 | '(lambda (x) | |
1178 | (if (or | |
1179 | (string-match "Summary" x) | |
1180 | (string-match "output\\*$" x)) | |
1181 | x)) | |
1182 | buflist) | |
1183 | ))) | |
1184 | ||
1185 | (mapcar 'iswitchb-to-end summaries))) | |
1186 | ||
1187 | ||
1188 | ||
1189 | ;;; HOOKS | |
1190 | (add-hook 'minibuffer-setup-hook 'iswitchb-minibuffer-setup) | |
1191 | ||
1192 | (provide 'iswitchb) | |
1193 | ||
6c56c80b | 1194 | ;;; iswitchb.el ends here |