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6c56c80b | 1 | ;;; iswitchb.el --- switch between buffers using substrings |
962a4216 | 2 | |
b21688f0 | 3 | ;; Copyright (C) 1996, 1997, 2000, 2001, 2003, 2005 Free Software Foundation, Inc. |
962a4216 | 4 | |
b2537dfa RS |
5 | ;; Author: Stephen Eglen <stephen@gnu.org> |
6 | ;; Maintainer: Stephen Eglen <stephen@gnu.org> | |
19db4308 | 7 | ;; Keywords: completion convenience |
183040ff | 8 | ;; location: http://www.anc.ed.ac.uk/~stephen/emacs/ |
962a4216 | 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 | ||
c6e5b93f | 27 | ;;; Commentary: |
962a4216 | 28 | |
c6e5b93f | 29 | ;; Installation: |
19db4308 DL |
30 | ;; To get the functions in this package bound to keys, use |
31 | ;; M-x iswitchb-mode or customize the option `iswitchb-mode'. | |
79f0a5ed SE |
32 | ;; Alternatively, add the following line to your .emacs: |
33 | ;; (iswitchb-mode 1) | |
962a4216 | 34 | |
962a4216 | 35 | ;; As you type in a substring, the list of buffers currently matching |
19db4308 | 36 | ;; the substring is displayed as you type. The list is ordered so |
962a4216 RS |
37 | ;; that the most recent buffers visited come at the start of the list. |
38 | ;; The buffer at the start of the list will be the one visited when | |
39 | ;; you press return. By typing more of the substring, the list is | |
40 | ;; narrowed down so that gradually the buffer you want will be at the | |
19db4308 | 41 | ;; top of the list. Alternatively, you can use C-s and C-r to rotate |
962a4216 RS |
42 | ;; buffer names in the list until the one you want is at the top of |
43 | ;; the list. Completion is also available so that you can see what is | |
44 | ;; common to all of the matching buffers as you type. | |
45 | ||
46 | ;; This code is similar to a couple of other packages. Michael R Cook | |
8097dd15 | 47 | ;; <cook@sightpath.com> wrote a similar buffer switching package, but |
962a4216 RS |
48 | ;; does exact matching rather than substring matching on buffer names. |
49 | ;; I also modified a couple of functions from icomplete.el to provide | |
50 | ;; the completion feedback in the minibuffer. | |
51 | ||
19db4308 | 52 | ;;; Example |
962a4216 | 53 | |
4d8ae757 RS |
54 | ;; If I have two buffers called "123456" and "123", with "123456" the |
55 | ;; most recent, when I use iswitchb, I first of all get presented with | |
56 | ;; the list of all the buffers | |
962a4216 | 57 | ;; |
19db4308 | 58 | ;; iswitch {123456,123} |
962a4216 RS |
59 | ;; |
60 | ;; If I then press 2: | |
61 | ;; iswitch 2[3]{123456,123} | |
62 | ;; | |
63 | ;; The list in {} are the matching buffers, most recent first (buffers | |
64 | ;; visible in the current frame are put at the end of the list by | |
65 | ;; default). At any time I can select the item at the head of the | |
2d839509 SE |
66 | ;; list by pressing RET. I can also put the first element at the end |
67 | ;; of the list by pressing C-s, or put the last element at the head of | |
68 | ;; the list by pressing C-r. The item in [] indicates what can be | |
69 | ;; added to my input by pressing TAB. In this case, I will get "3" | |
70 | ;; added to my input. So, press TAB: | |
962a4216 RS |
71 | ;; iswitch 23{123456,123} |
72 | ;; | |
73 | ;; At this point, I still have two matching buffers. | |
74 | ;; If I want the first buffer in the list, I simply press RET. If I | |
75 | ;; wanted the second in the list, I could press C-s to move it to the | |
76 | ;; top of the list and then RET to select it. | |
77 | ;; | |
4d8ae757 | 78 | ;; However, if I type 4, I only have one match left: |
962a4216 RS |
79 | ;; iswitch 234[123456] [Matched] |
80 | ;; | |
4d8ae757 RS |
81 | ;; Since there is only one matching buffer left, it is given in [] and we |
82 | ;; see the text [Matched] afterwards. I can now press TAB or RET to go | |
83 | ;; to that buffer. | |
962a4216 RS |
84 | ;; |
85 | ;; If however, I now type "a": | |
86 | ;; iswitch 234a [No match] | |
87 | ;; There are no matching buffers. If I press RET or TAB, I can be | |
88 | ;; prompted to create a new buffer called "234a". | |
89 | ;; | |
90 | ;; Of course, where this function comes in really useful is when you | |
91 | ;; can specify the buffer using only a few keystrokes. In the above | |
92 | ;; example, the quickest way to get to the "123456" buffer would be | |
ccd2f997 | 93 | ;; just to type 4 and then RET (assuming there isn't any newer buffer |
962a4216 RS |
94 | ;; with 4 in its name). |
95 | ||
96 | ;; To see a full list of all matching buffers in a separate buffer, | |
97 | ;; hit ? or press TAB when there are no further completions to the | |
ccd2f997 KH |
98 | ;; substring. Repeated TAB presses will scroll you through this |
99 | ;; separate buffer. | |
962a4216 | 100 | |
36a3b01c RS |
101 | ;; The buffer at the head of the list can be killed by pressing C-k. |
102 | ;; If the buffer needs saving, you will be queried before the buffer | |
103 | ;; is killed. | |
104 | ||
105 | ;; If you find that the file you are after is not in a buffer, you can | |
106 | ;; press C-x C-f to immediately drop into find-file. | |
107 | ||
4d8ae757 RS |
108 | ;; See the doc string of iswitchb for full keybindings and features. |
109 | ;; (describe-function 'iswitchb) | |
962a4216 | 110 | |
8097dd15 GM |
111 | ;; Case matching: The case of strings when matching can be ignored or |
112 | ;; used depending on the value of iswitchb-case (default is the same | |
113 | ;; as case-fold-search, normally t). Imagine you have the following | |
19db4308 | 114 | ;; buffers: |
8097dd15 GM |
115 | ;; |
116 | ;; INBOX *info* *scratch* | |
117 | ;; | |
118 | ;; Then these will be the matching buffers, depending on how you type | |
119 | ;; the two letters `in' and the value of iswitchb-case: | |
120 | ;; | |
121 | ;; iswitchb-case user input | matching buffers | |
122 | ;; ---------------------------------------------- | |
19db4308 DL |
123 | ;; nil in | *info* |
124 | ;; t in | INBOX, *info* | |
125 | ;; t IN | INBOX | |
126 | ;; t In | [No match] | |
8097dd15 | 127 | |
962a4216 RS |
128 | ;;; Customisation |
129 | ||
130 | ;; See the User Variables section below for easy ways to change the | |
36a3b01c RS |
131 | ;; functionality of the program. These are accessible using the |
132 | ;; custom package. | |
8ae3ef6e | 133 | ;; To modify the keybindings, use something like: |
962a4216 | 134 | ;; |
8ae3ef6e | 135 | ;;(add-hook 'iswitchb-mode-hook 'iswitchb-my-keys) |
962a4216 | 136 | ;;(defun iswitchb-my-keys () |
ccd2f997 | 137 | ;; "Add my keybindings for iswitchb." |
8ae3ef6e | 138 | ;; (define-key iswitchb-mode-map " " 'iswitchb-next-match)) |
962a4216 | 139 | ;; |
6b0cc1b5 | 140 | ;; Seeing all the matching buffers |
36a3b01c | 141 | ;; |
962a4216 | 142 | ;; If you have many matching buffers, they may not all fit onto one |
f05b502e GM |
143 | ;; line of the minibuffer. In Emacs 21, the variable |
144 | ;; `resize-mini-windows' controls how many lines of the minibuffer can | |
145 | ;; be seen. For older versions of emacs, you can use | |
146 | ;; `resize-minibuffer-mode'. You can also limit iswitchb so that it | |
962a4216 RS |
147 | ;; only shows a certain number of lines -- see the documentation for |
148 | ;; `iswitchb-minibuffer-setup-hook'. | |
149 | ||
6b0cc1b5 | 150 | ;; Changing the list of buffers |
962a4216 RS |
151 | |
152 | ;; By default, the list of current buffers is most recent first, | |
153 | ;; oldest last, with the exception that the buffers visible in the | |
154 | ;; current frame are put at the end of the list. A hook exists to | |
155 | ;; allow other functions to order the list. For example, if you add: | |
156 | ;; | |
157 | ;; (add-hook 'iswitchb-make-buflist-hook 'iswitchb-summaries-to-end) | |
158 | ;; | |
159 | ;; then all buffers matching "Summary" are moved to the end of the | |
160 | ;; list. (I find this handy for keeping the INBOX Summary and so on | |
161 | ;; out of the way.) It also moves buffers matching "output\*$" to the | |
90a02640 | 162 | ;; end of the list (these are created by AUCTeX when compiling.) |
962a4216 RS |
163 | ;; Other functions could be made available which alter the list of |
164 | ;; matching buffers (either deleting or rearranging elements.) | |
165 | ||
166 | ;; Font-Lock | |
167 | ||
b21688f0 EZ |
168 | ;; font-lock is used to highlight the first matching buffer. To |
169 | ;; switch this off, set (setq iswitchb-use-faces nil). Colouring of | |
170 | ;; the matching buffer name was suggested by Carsten Dominik | |
171 | ;; (dominik@strw.leidenuniv.nl) | |
962a4216 | 172 | |
6b0cc1b5 | 173 | ;; Replacement for read-buffer |
962a4216 | 174 | |
ccd2f997 KH |
175 | ;; iswitchb-read-buffer has been written to be a drop in replacement |
176 | ;; for the normal buffer selection routine `read-buffer'. To use | |
c6e5b93f | 177 | ;; iswitch for all buffer selections in Emacs, add: |
ccd2f997 | 178 | ;; (setq read-buffer-function 'iswitchb-read-buffer) |
4d8ae757 | 179 | ;; (This variable was introduced in Emacs 20.3.) |
c6e5b93f | 180 | ;; XEmacs users can get the same behaviour by doing: |
19db4308 | 181 | ;; (defalias 'read-buffer 'iswitchb-read-buffer) |
c6e5b93f | 182 | ;; since `read-buffer' is defined in lisp. |
36a3b01c | 183 | |
4d8ae757 RS |
184 | ;; Using iswitchb for other completion tasks. |
185 | ||
a2c060f6 | 186 | ;; Kin Cho (kin@neoscale.com) sent the following suggestion to use |
f1180544 | 187 | ;; iswitchb for other completion tasks. |
4d8ae757 RS |
188 | ;; |
189 | ;; (defun my-icompleting-read (prompt choices) | |
190 | ;; "Use iswitch as a completing-read replacement to choose from | |
191 | ;; choices. PROMPT is a string to prompt with. CHOICES is a list of | |
192 | ;; strings to choose from." | |
193 | ;; (let ((iswitchb-make-buflist-hook | |
194 | ;; (lambda () | |
195 | ;; (setq iswitchb-temp-buflist choices)))) | |
196 | ;; (iswitchb-read-buffer prompt))) | |
197 | ;; | |
198 | ;; example: | |
199 | ;; (my-icompleting-read "Which fruit? " ' | |
200 | ;; ("apple" "pineapple" "pear" "bananas" "oranges") ) | |
201 | ||
a2c060f6 PJ |
202 | ;; Kin Cho also suggested the following defun. Once you have a subset of |
203 | ;; matching buffers matching your current prompt, you can then press | |
204 | ;; e.g. C-o to restrict matching to those buffers and clearing the prompt: | |
205 | ;; (defun iswitchb-exclude-nonmatching() | |
206 | ;; "Make iswitchb work on only the currently matching names." | |
207 | ;; (interactive) | |
208 | ;; (setq iswitchb-buflist iswitchb-matches) | |
209 | ;; (setq iswitchb-rescan t) | |
210 | ;; (delete-minibuffer-contents)) | |
211 | ;; | |
212 | ;; (add-hook 'iswitchb-define-mode-map-hook | |
f1180544 JB |
213 | ;; '(lambda () (define-key |
214 | ;; iswitchb-mode-map "\C-o" | |
a2c060f6 PJ |
215 | ;; 'iswitchb-exclude-nonmatching))) |
216 | ||
4d8ae757 RS |
217 | ;; Other lisp packages extend iswitchb behaviour to other tasks. See |
218 | ;; ido.el (by Kim Storm) and mcomplete.el (Yuji Minejima). | |
219 | ||
220 | ;; Window managers: Switching frames/focus follows mouse; Sawfish. | |
221 | ||
222 | ;; If you switch to a buffer that is visible in another frame, | |
223 | ;; iswitchb can switch focus to that frame. If your window manager | |
224 | ;; uses "click to focus" policy for window selection, you should also | |
225 | ;; set focus-follows-mouse to nil. | |
226 | ||
227 | ;; iswitch functionality has also been implemented for switching | |
228 | ;; between windows in the Sawfish window manager. | |
229 | ||
6b0cc1b5 SE |
230 | ;; Regexp matching |
231 | ||
b21688f0 EZ |
232 | ;; There is provision for regexp matching within iswitchb, enabled |
233 | ;; through `iswitchb-regexp'. This allows you to type `c$' for | |
234 | ;; example and see all buffer names ending in `c'. No completion | |
235 | ;; mechanism is currently offered when regexp searching. | |
6b0cc1b5 | 236 | |
ccd2f997 | 237 | ;;; TODO |
36a3b01c | 238 | |
962a4216 RS |
239 | ;;; Acknowledgements |
240 | ||
241 | ;; Thanks to Jari Aalto <jari.aalto@poboxes.com> for help with the | |
242 | ;; first version of this package, iswitch-buffer. Thanks also to many | |
243 | ;; others for testing earlier versions. | |
244 | ||
245 | ;;; Code: | |
246 | ||
c6e5b93f | 247 | ;; CL needed for cadr and last |
181688f2 SE |
248 | (if (not (and (fboundp 'cadr) |
249 | (fboundp 'last))) | |
250 | (require 'cl)) | |
c6e5b93f | 251 | |
b21688f0 EZ |
252 | (require 'font-lock) |
253 | ||
36a3b01c RS |
254 | ;; Set up the custom library. |
255 | ;; taken from http://www.dina.kvl.dk/~abraham/custom/ | |
256 | (eval-and-compile | |
257 | (condition-case () | |
258 | (require 'custom) | |
259 | (error nil)) | |
260 | (if (and (featurep 'custom) (fboundp 'custom-declare-variable)) | |
261 | nil ;; We've got what we needed | |
262 | ;; We have the old custom-library, hack around it! | |
263 | (defmacro defgroup (&rest args) | |
264 | nil) | |
19db4308 | 265 | (defmacro defcustom (var value doc &rest args) |
b787fc05 | 266 | `(defvar ,var ,value ,doc)))) |
36a3b01c | 267 | |
962a4216 RS |
268 | ;;; User Variables |
269 | ;; | |
270 | ;; These are some things you might want to change. | |
271 | ||
36a3b01c | 272 | (defgroup iswitchb nil |
c6e5b93f | 273 | "Switch between buffers using substrings." |
f5f727f8 | 274 | :group 'convenience |
19db4308 | 275 | :group 'completion |
36a3b01c | 276 | :link '(emacs-commentary-link :tag "Commentary" "iswitchb.el") |
19db4308 | 277 | :link '(url-link "http://www.anc.ed.ac.uk/~stephen/emacs/") |
181688f2 | 278 | :link '(emacs-library-link :tag "Lisp File" "iswitchb.el")) |
36a3b01c RS |
279 | |
280 | (defcustom iswitchb-case case-fold-search | |
8097dd15 GM |
281 | "*Non-nil if searching of buffer names should ignore case. |
282 | If this is non-nil but the user input has any upper case letters, matching | |
283 | is temporarily case sensitive." | |
36a3b01c RS |
284 | :type 'boolean |
285 | :group 'iswitchb) | |
962a4216 | 286 | |
36a3b01c | 287 | (defcustom iswitchb-buffer-ignore |
962a4216 | 288 | '("^ ") |
6c56c80b RS |
289 | "*List of regexps or functions matching buffer names to ignore. |
290 | For example, traditional behavior is not to list buffers whose names begin | |
291 | with a space, for which the regexp is `^ '. See the source file for | |
36a3b01c | 292 | example functions that filter buffernames." |
e47525c4 | 293 | :type '(repeat (choice regexp function)) |
36a3b01c RS |
294 | :group 'iswitchb) |
295 | ||
c80d9534 JW |
296 | (defcustom iswitchb-max-to-show nil |
297 | "*If non-nil, limit the number of names shown in the minibuffer. | |
f329780b SE |
298 | If this value is N, and N is greater than the number of matching |
299 | buffers, the first N/2 and the last N/2 matching buffers are | |
300 | shown. This can greatly speed up iswitchb if you have a | |
301 | multitude of buffers open." | |
79e1c9d4 | 302 | :type '(choice (const :tag "Show all" nil) integer) |
c80d9534 JW |
303 | :group 'iswitchb) |
304 | ||
c4ae2d51 JW |
305 | (defcustom iswitchb-use-virtual-buffers nil |
306 | "*If non-nil, refer to past buffers when none match. | |
307 | This feature relies upon the `recentf' package, which will be | |
308 | enabled if this variable is configured to a non-nil value." | |
309 | :type 'boolean | |
310 | :require 'recentf | |
311 | :set (function | |
312 | (lambda (sym value) | |
533b22e2 | 313 | (if value (recentf-mode 1)) |
c4ae2d51 JW |
314 | (set sym value))) |
315 | :group 'iswitchb) | |
316 | ||
317 | (defvar iswitchb-virtual-buffers nil) | |
318 | ||
c9403808 RS |
319 | (defcustom iswitchb-cannot-complete-hook 'iswitchb-completion-help |
320 | "*Hook run when `iswitchb-complete' can't complete any more. | |
321 | The most useful values are `iswitchb-completion-help', which pops up a | |
322 | window with completion alternatives, or `iswitchb-next-match' or | |
323 | `iswitchb-prev-match', which cycle the buffer list." | |
324 | :type 'hook | |
325 | :group 'iswitchb) | |
326 | ||
962a4216 | 327 | ;;; Examples for setting the value of iswitchb-buffer-ignore |
6b0cc1b5 | 328 | ;(defun iswitchb-ignore-c-mode (name) |
962a4216 RS |
329 | ; "Ignore all c mode buffers -- example function for iswitchb." |
330 | ; (save-excursion | |
331 | ; (set-buffer name) | |
332 | ; (string-match "^C$" mode-name))) | |
333 | ||
6b0cc1b5 | 334 | ;(setq iswitchb-buffer-ignore '("^ " iswitchb-ignore-c-mode)) |
962a4216 RS |
335 | ;(setq iswitchb-buffer-ignore '("^ " "\\.c$" "\\.h$")) |
336 | ||
36a3b01c | 337 | (defcustom iswitchb-default-method 'always-frame |
6c56c80b | 338 | "*How to switch to new buffer when using `iswitchb-buffer'. |
962a4216 RS |
339 | Possible values: |
340 | `samewindow' Show new buffer in same window | |
341 | `otherwindow' Show new buffer in another window (same frame) | |
888472e0 | 342 | `display' Display buffer in another window without switching to it |
962a4216 RS |
343 | `otherframe' Show new buffer in another frame |
344 | `maybe-frame' If a buffer is visible in another frame, prompt to ask if you | |
345 | you want to see the buffer in the same window of the current | |
346 | frame or in the other frame. | |
c6e5b93f | 347 | `always-frame' If a buffer is visible in another frame, raise that |
36a3b01c | 348 | frame. Otherwise, visit the buffer in the same window." |
19db4308 | 349 | :type '(choice (const samewindow) |
c6e5b93f SE |
350 | (const otherwindow) |
351 | (const display) | |
19db4308 | 352 | (const otherframe) |
c6e5b93f SE |
353 | (const maybe-frame) |
354 | (const always-frame)) | |
36a3b01c | 355 | :group 'iswitchb) |
962a4216 | 356 | |
36a3b01c | 357 | (defcustom iswitchb-regexp nil |
6c56c80b | 358 | "*Non-nil means that `iswitchb' will do regexp matching. |
6b0cc1b5 | 359 | Value can be toggled within `iswitchb' using `iswitchb-toggle-regexp'." |
36a3b01c RS |
360 | :type 'boolean |
361 | :group 'iswitchb) | |
362 | ||
36a3b01c | 363 | (defcustom iswitchb-newbuffer t |
962a4216 | 364 | "*Non-nil means create new buffer if no buffer matches substring. |
36a3b01c RS |
365 | See also `iswitchb-prompt-newbuffer'." |
366 | :type 'boolean | |
367 | :group 'iswitchb) | |
962a4216 | 368 | |
36a3b01c | 369 | (defcustom iswitchb-prompt-newbuffer t |
962a4216 | 370 | "*Non-nil means prompt user to confirm before creating new buffer. |
36a3b01c RS |
371 | See also `iswitchb-newbuffer'." |
372 | :type 'boolean | |
373 | :group 'iswitchb) | |
374 | ||
b21688f0 | 375 | (defcustom iswitchb-use-faces t |
6b0cc1b5 | 376 | "*Non-nil means use font-lock fonts for showing first match." |
36a3b01c RS |
377 | :type 'boolean |
378 | :group 'iswitchb) | |
b21688f0 | 379 | (define-obsolete-variable-alias 'iswitchb-use-fonts 'iswitchb-use-faces "22.1") |
962a4216 | 380 | |
f5bd1691 GM |
381 | (defcustom iswitchb-use-frame-buffer-list nil |
382 | "*Non-nil means use the currently selected frame's buffer list." | |
383 | :type 'boolean | |
384 | :group 'iswitchb) | |
385 | ||
36a3b01c | 386 | (defcustom iswitchb-make-buflist-hook nil |
19db4308 | 387 | "Hook to run when list of matching buffers is created." |
36a3b01c RS |
388 | :type 'hook |
389 | :group 'iswitchb) | |
390 | ||
962a4216 RS |
391 | (defvar iswitchb-all-frames 'visible |
392 | "*Argument to pass to `walk-windows' when finding visible buffers. | |
393 | See documentation of `walk-windows' for useful values.") | |
394 | ||
6b0cc1b5 | 395 | (defcustom iswitchb-minibuffer-setup-hook nil |
19db4308 | 396 | "Iswitchb-specific customization of minibuffer setup. |
962a4216 | 397 | |
6c56c80b | 398 | This hook is run during minibuffer setup iff `iswitchb' will be active. |
33a316ba SE |
399 | For instance: |
400 | \(add-hook 'iswitchb-minibuffer-setup-hook | |
401 | '\(lambda () (set (make-local-variable 'max-mini-window-height) 3))) | |
402 | will constrain the minibuffer to a maximum height of 3 lines when | |
403 | iswitchb is running." | |
6b0cc1b5 SE |
404 | :type 'hook |
405 | :group 'iswitchb) | |
406 | ||
54907cdc | 407 | (defface iswitchb-single-match |
b21688f0 EZ |
408 | '((t |
409 | (:inherit font-lock-comment-face))) | |
410 | "Iswitchb face for single matching buffer name." | |
411 | :version "22.1" | |
412 | :group 'iswitchb) | |
413 | ||
54907cdc | 414 | (defface iswitchb-current-match |
b21688f0 EZ |
415 | '((t |
416 | (:inherit font-lock-function-name-face))) | |
417 | "Iswitchb face for current matching buffer name." | |
418 | :version "22.1" | |
419 | :group 'iswitchb) | |
420 | ||
54907cdc | 421 | (defface iswitchb-virtual-matches |
b21688f0 EZ |
422 | '((t |
423 | (:inherit font-lock-builtin-face))) | |
424 | "Iswitchb face for matching virtual buffer names. | |
425 | See also `iswitchb-use-virtual-buffers'." | |
426 | :version "22.1" | |
427 | :group 'iswitchb) | |
428 | ||
54907cdc | 429 | (defface iswitchb-invalid-regexp |
b21688f0 EZ |
430 | '((t |
431 | (:inherit font-lock-warning-face))) | |
432 | "Iswitchb face for indicating invalid regexp. " | |
433 | :version "22.1" | |
434 | :group 'iswitchb) | |
435 | ||
6b0cc1b5 SE |
436 | ;; Do we need the variable iswitchb-use-mycompletion? |
437 | ||
6b0cc1b5 SE |
438 | ;;; Internal Variables |
439 | ||
440 | (defvar iswitchb-method nil | |
19db4308 | 441 | "Stores the method for viewing the selected buffer. |
6b0cc1b5 SE |
442 | Its value is one of `samewindow', `otherwindow', `display', `otherframe', |
443 | `maybe-frame' or `always-frame'. See `iswitchb-default-method' for | |
444 | details of values.") | |
962a4216 RS |
445 | |
446 | (defvar iswitchb-eoinput 1 | |
447 | "Point where minibuffer input ends and completion info begins. | |
6c56c80b | 448 | Copied from `icomplete-eoinput'.") |
962a4216 RS |
449 | (make-variable-buffer-local 'iswitchb-eoinput) |
450 | ||
962a4216 RS |
451 | (defvar iswitchb-buflist nil |
452 | "Stores the current list of buffers that will be searched through. | |
453 | The list is ordered, so that the most recent buffers come first, | |
454 | although by default, the buffers visible in the current frame are put | |
455 | at the end of the list. Created by `iswitchb-make-buflist'.") | |
456 | ||
457 | ;; todo -- is this necessary? | |
458 | ||
459 | (defvar iswitchb-use-mycompletion nil | |
19db4308 | 460 | "Non-nil means use `iswitchb-buffer' completion feedback. |
6c56c80b RS |
461 | Should only be set to t by iswitchb functions, so that it doesn't |
462 | interfere with other minibuffer usage.") | |
962a4216 | 463 | |
19db4308 | 464 | (defvar iswitchb-change-word-sub nil |
962a4216 RS |
465 | "Private variable used by `iswitchb-word-matching-substring'.") |
466 | ||
962a4216 RS |
467 | (defvar iswitchb-common-match-string nil |
468 | "Stores the string that is common to all matching buffers.") | |
469 | ||
962a4216 RS |
470 | (defvar iswitchb-rescan nil |
471 | "Non-nil means we need to regenerate the list of matching buffers.") | |
472 | ||
473 | (defvar iswitchb-text nil | |
474 | "Stores the users string as it is typed in.") | |
475 | ||
476 | (defvar iswitchb-matches nil | |
ccd2f997 | 477 | "List of buffers currently matching `iswitchb-text'.") |
962a4216 | 478 | |
19db4308 DL |
479 | (defvar iswitchb-mode-map |
480 | (let ((map (make-sparse-keymap))) | |
481 | (set-keymap-parent map minibuffer-local-map) | |
482 | (define-key map "?" 'iswitchb-completion-help) | |
483 | (define-key map "\C-s" 'iswitchb-next-match) | |
484 | (define-key map "\C-r" 'iswitchb-prev-match) | |
485 | (define-key map "\t" 'iswitchb-complete) | |
486 | (define-key map "\C-j" 'iswitchb-select-buffer-text) | |
487 | (define-key map "\C-t" 'iswitchb-toggle-regexp) | |
488 | (define-key map "\C-x\C-f" 'iswitchb-find-file) | |
489 | (define-key map "\C-c" 'iswitchb-toggle-case) | |
490 | (define-key map "\C-k" 'iswitchb-kill-buffer) | |
491 | (define-key map "\C-m" 'iswitchb-exit-minibuffer) | |
492 | map) | |
493 | "Minibuffer keymap for `iswitchb-buffer'.") | |
494 | ||
495 | (defvar iswitchb-global-map | |
496 | (let ((map (make-sparse-keymap))) | |
497 | (substitute-key-definition 'switch-to-buffer ; normally C-x b | |
498 | 'iswitchb-buffer map global-map) | |
499 | (substitute-key-definition 'switch-to-buffer-other-window ; C-x 4 b | |
500 | 'iswitchb-buffer-other-window map global-map) | |
501 | (substitute-key-definition 'switch-to-buffer-other-frame ; C-x 5 b | |
502 | 'iswitchb-buffer-other-frame map global-map) | |
503 | (substitute-key-definition 'display-buffer ; C-x 4 C-o | |
504 | 'iswitchb-display-buffer map global-map) | |
505 | map) | |
971cb834 | 506 | "Global keymap for `iswitchb-mode'.") |
19db4308 DL |
507 | |
508 | (defvar iswitchb-history nil | |
6c56c80b | 509 | "History of buffers selected using `iswitchb-buffer'.") |
962a4216 | 510 | |
19db4308 DL |
511 | (defvar iswitchb-exit nil |
512 | "Flag to monitor how `iswitchb-buffer' exits. | |
6c56c80b RS |
513 | If equal to `takeprompt', we use the prompt as the buffer name to be |
514 | selected.") | |
962a4216 RS |
515 | |
516 | (defvar iswitchb-buffer-ignore-orig nil | |
517 | "Stores original value of `iswitchb-buffer-ignore'.") | |
518 | ||
6b0cc1b5 SE |
519 | (defvar iswitchb-default nil |
520 | "Default buffer for iswitchb.") | |
962a4216 | 521 | |
02e526ad SE |
522 | ;; The following variables are needed to keep the byte compiler quiet. |
523 | (defvar iswitchb-require-match nil | |
524 | "Non-nil if matching buffer must be selected.") | |
525 | ||
526 | (defvar iswitchb-temp-buflist nil | |
527 | "Stores a temporary version of the buffer list being created.") | |
528 | ||
529 | (defvar iswitchb-bufs-in-frame nil | |
530 | "List of the buffers visible in the current frame.") | |
531 | ||
c7b89861 EZ |
532 | (defvar iswitchb-minibuf-depth nil |
533 | "Value we expect to be returned by `minibuffer-depth' in the minibuffer.") | |
534 | ||
b21688f0 EZ |
535 | (defvar iswitchb-common-match-inserted nil |
536 | "Non-nil if we have just inserted a common match in the minibuffer.") | |
537 | ||
538 | (defvar iswitchb-invalid-regexp) | |
539 | ||
962a4216 RS |
540 | ;;; FUNCTIONS |
541 | ||
19db4308 | 542 | ;;; ISWITCHB KEYMAP |
962a4216 | 543 | (defun iswitchb-define-mode-map () |
19db4308 DL |
544 | "Set up the keymap for `iswitchb-buffer'. |
545 | This is obsolete. Use \\[iswitchb-mode] or customize the | |
546 | variable `iswitchb-mode'." | |
962a4216 RS |
547 | (interactive) |
548 | (let (map) | |
ccd2f997 | 549 | ;; generated every time so that it can inherit new functions. |
962a4216 RS |
550 | ;;(or iswitchb-mode-map |
551 | ||
552 | (setq map (copy-keymap minibuffer-local-map)) | |
553 | (define-key map "?" 'iswitchb-completion-help) | |
554 | (define-key map "\C-s" 'iswitchb-next-match) | |
555 | (define-key map "\C-r" 'iswitchb-prev-match) | |
556 | (define-key map "\t" 'iswitchb-complete) | |
557 | (define-key map "\C-j" 'iswitchb-select-buffer-text) | |
558 | (define-key map "\C-t" 'iswitchb-toggle-regexp) | |
36a3b01c | 559 | (define-key map "\C-x\C-f" 'iswitchb-find-file) |
962a4216 RS |
560 | ;;(define-key map "\C-a" 'iswitchb-toggle-ignore) |
561 | (define-key map "\C-c" 'iswitchb-toggle-case) | |
36a3b01c | 562 | (define-key map "\C-k" 'iswitchb-kill-buffer) |
ccd2f997 | 563 | (define-key map "\C-m" 'iswitchb-exit-minibuffer) |
962a4216 | 564 | (setq iswitchb-mode-map map) |
181688f2 | 565 | (run-hooks 'iswitchb-define-mode-map-hook))) |
f1180544 | 566 | |
962a4216 RS |
567 | ;;; MAIN FUNCTION |
568 | (defun iswitchb () | |
569 | "Switch to buffer matching a substring. | |
570 | As you type in a string, all of the buffers matching the string are | |
571 | displayed. When you have found the buffer you want, it can then be | |
572 | selected. As you type, most keys have their normal keybindings, | |
573 | except for the following: | |
574 | \\<iswitchb-mode-map> | |
575 | ||
576 | RET Select the buffer at the front of the list of matches. If the | |
6c56c80b | 577 | list is empty, possibly prompt to create new buffer. |
962a4216 RS |
578 | |
579 | \\[iswitchb-select-buffer-text] Select the current prompt as the buffer. | |
580 | If no buffer is found, prompt for a new one. | |
581 | ||
582 | \\[iswitchb-next-match] Put the first element at the end of the list. | |
583 | \\[iswitchb-prev-match] Put the last element at the start of the list. | |
19db4308 | 584 | \\[iswitchb-complete] Complete a common suffix to the current string that |
962a4216 RS |
585 | matches all buffers. If there is only one match, select that buffer. |
586 | If there is no common suffix, show a list of all matching buffers | |
587 | in a separate window. | |
ccd2f997 | 588 | \\[iswitchb-toggle-regexp] Toggle regexp searching. |
962a4216 | 589 | \\[iswitchb-toggle-case] Toggle case-sensitive searching of buffer names. |
36a3b01c | 590 | \\[iswitchb-completion-help] Show list of matching buffers in separate window. |
19db4308 | 591 | \\[iswitchb-find-file] Exit iswitchb and drop into `find-file'. |
36a3b01c | 592 | \\[iswitchb-kill-buffer] Kill buffer at head of buffer list." |
962a4216 RS |
593 | ;;\\[iswitchb-toggle-ignore] Toggle ignoring certain buffers (see \ |
594 | ;;`iswitchb-buffer-ignore') | |
f1180544 | 595 | |
8ae3ef6e | 596 | (let* ((prompt "iswitch ") |
b21688f0 | 597 | iswitchb-invalid-regexp |
8ae3ef6e | 598 | (buf (iswitchb-read-buffer prompt))) |
ccd2f997 | 599 | |
ccd2f997 KH |
600 | ;;(message "chosen text %s" iswitchb-final-text) |
601 | ;; Choose the buffer name: either the text typed in, or the head | |
602 | ;; of the list of matches | |
603 | ||
604 | (cond ( (eq iswitchb-exit 'findfile) | |
605 | (call-interactively 'find-file)) | |
b21688f0 EZ |
606 | (iswitchb-invalid-regexp |
607 | (message "Won't make invalid regexp named buffer")) | |
ccd2f997 KH |
608 | (t |
609 | ;; View the buffer | |
c6e5b93f | 610 | ;;(message "go to buf %s" buf) |
ccd2f997 KH |
611 | ;; Check buf is non-nil. |
612 | (if buf | |
613 | (if (get-buffer buf) | |
614 | ;; buffer exists, so view it and then exit | |
615 | (iswitchb-visit-buffer buf) | |
616 | ;; else buffer doesn't exist | |
617 | (iswitchb-possible-new-buffer buf))) | |
181688f2 | 618 | )))) |
ccd2f997 | 619 | |
c4ae2d51 JW |
620 | (defun iswitchb-read-buffer (prompt &optional default require-match |
621 | start matches-set) | |
ccd2f997 | 622 | "Replacement for the built-in `read-buffer'. |
19db4308 | 623 | Return the name of a buffer selected. |
c4ae2d51 JW |
624 | PROMPT is the prompt to give to the user. |
625 | DEFAULT if given is the default buffer to be selected, which will | |
626 | go to the front of the list. | |
627 | If REQUIRE-MATCH is non-nil, an existing-buffer must be selected. | |
628 | If START is a string, the selection process is started with that | |
629 | string. | |
630 | If MATCHES-SET is non-nil, the buflist is not updated before | |
631 | the selection process begins. Used by isearchb.el." | |
962a4216 RS |
632 | (let |
633 | ( | |
962a4216 RS |
634 | buf-sel |
635 | iswitchb-final-text | |
962a4216 | 636 | (icomplete-mode nil) ;; prevent icomplete starting up |
b21688f0 | 637 | ) |
ccd2f997 | 638 | |
962a4216 | 639 | (iswitchb-define-mode-map) |
962a4216 | 640 | (setq iswitchb-exit nil) |
6b0cc1b5 SE |
641 | (setq iswitchb-default |
642 | (if (bufferp default) | |
643 | (buffer-name default) | |
644 | default)) | |
c4ae2d51 JW |
645 | (setq iswitchb-text (or start "")) |
646 | (unless matches-set | |
647 | (setq iswitchb-rescan t) | |
648 | (iswitchb-make-buflist iswitchb-default) | |
649 | (iswitchb-set-matches)) | |
19db4308 | 650 | (let |
ccd2f997 | 651 | ((minibuffer-local-completion-map iswitchb-mode-map) |
c7b89861 EZ |
652 | ;; Record the minibuffer depth that we expect to find once |
653 | ;; the minibuffer is set up and iswitchb-entryfn-p is called. | |
654 | (iswitchb-minibuf-depth (1+ (minibuffer-depth))) | |
181688f2 | 655 | (iswitchb-require-match require-match)) |
36a3b01c | 656 | ;; prompt the user for the buffer name |
19db4308 | 657 | (setq iswitchb-final-text (completing-read |
c4ae2d51 | 658 | prompt ;the prompt |
660e161f | 659 | '(("dummy" . 1)) ;table |
c4ae2d51 JW |
660 | nil ;predicate |
661 | nil ;require-match [handled elsewhere] | |
662 | start ;initial-contents | |
ccd2f997 | 663 | 'iswitchb-history))) |
4dddd07f SE |
664 | (if (and (not (eq iswitchb-exit 'usefirst)) |
665 | (get-buffer iswitchb-final-text)) | |
8ae3ef6e | 666 | ;; This happens for example if the buffer was chosen with the mouse. |
c4ae2d51 JW |
667 | (setq iswitchb-matches (list iswitchb-final-text) |
668 | iswitchb-virtual-buffers nil)) | |
669 | ||
670 | ;; If no buffer matched, but a virtual buffer was selected, visit | |
671 | ;; that file now and act as though that buffer had been selected. | |
672 | (if (and iswitchb-virtual-buffers | |
673 | (not (iswitchb-existing-buffer-p))) | |
674 | (let ((virt (car iswitchb-virtual-buffers))) | |
675 | (find-file-noselect (cdr virt)) | |
676 | (setq iswitchb-matches (list (car virt)) | |
677 | iswitchb-virtual-buffers nil))) | |
8ae3ef6e | 678 | |
ccd2f997 | 679 | ;; Handling the require-match must be done in a better way. |
c4ae2d51 JW |
680 | (if (and require-match |
681 | (not (iswitchb-existing-buffer-p))) | |
19db4308 | 682 | (error "Must specify valid buffer")) |
ccd2f997 | 683 | |
c4ae2d51 JW |
684 | (if (or (eq iswitchb-exit 'takeprompt) |
685 | (null iswitchb-matches)) | |
ccd2f997 KH |
686 | (setq buf-sel iswitchb-final-text) |
687 | ;; else take head of list | |
688 | (setq buf-sel (car iswitchb-matches))) | |
f1180544 | 689 | |
ccd2f997 | 690 | ;; Or possibly choose the default buffer |
19db4308 | 691 | (if (equal iswitchb-final-text "") |
c4ae2d51 | 692 | (setq buf-sel (car iswitchb-matches))) |
36a3b01c | 693 | |
ccd2f997 | 694 | buf-sel)) |
36a3b01c | 695 | |
ccd2f997 KH |
696 | (defun iswitchb-existing-buffer-p () |
697 | "Return non-nil if there is a matching buffer." | |
698 | (not (null iswitchb-matches))) | |
962a4216 RS |
699 | |
700 | ;;; COMPLETION CODE | |
701 | ||
702 | (defun iswitchb-set-common-completion () | |
6c56c80b RS |
703 | "Find common completion of `iswitchb-text' in `iswitchb-matches'. |
704 | The result is stored in `iswitchb-common-match-string'." | |
962a4216 RS |
705 | |
706 | (let* (val) | |
707 | (setq iswitchb-common-match-string nil) | |
708 | (if (and iswitchb-matches | |
6b0cc1b5 | 709 | (not iswitchb-regexp) ;; testing |
962a4216 RS |
710 | (stringp iswitchb-text) |
711 | (> (length iswitchb-text) 0)) | |
712 | (if (setq val (iswitchb-find-common-substring | |
713 | iswitchb-matches iswitchb-text)) | |
714 | (setq iswitchb-common-match-string val))) | |
181688f2 | 715 | val)) |
962a4216 RS |
716 | |
717 | (defun iswitchb-complete () | |
718 | "Try and complete the current pattern amongst the buffer names." | |
719 | (interactive) | |
720 | (let (res) | |
721 | (cond ((not iswitchb-matches) | |
c9403808 | 722 | (run-hooks 'iswitchb-cannot-complete-hook)) |
b21688f0 EZ |
723 | (iswitchb-invalid-regexp |
724 | ;; Do nothing | |
725 | ) | |
ccd2f997 | 726 | ((= 1 (length iswitchb-matches)) |
962a4216 RS |
727 | ;; only one choice, so select it. |
728 | (exit-minibuffer)) | |
f1180544 | 729 | |
962a4216 RS |
730 | (t |
731 | ;; else there could be some completions | |
6b0cc1b5 | 732 | (setq res iswitchb-common-match-string) |
962a4216 | 733 | (if (and (not (memq res '(t nil))) |
36a3b01c | 734 | (not (equal res iswitchb-text))) |
ccd2f997 | 735 | ;; found something to complete, so put it in the minibuffer. |
962a4216 | 736 | (progn |
b21688f0 EZ |
737 | (setq iswitchb-rescan nil |
738 | iswitchb-common-match-inserted t) | |
53811b42 | 739 | (delete-region (minibuffer-prompt-end) (point)) |
962a4216 RS |
740 | (insert res)) |
741 | ;; else nothing to complete | |
c9403808 | 742 | (run-hooks 'iswitchb-cannot-complete-hook) |
181688f2 | 743 | ))))) |
962a4216 RS |
744 | |
745 | ;;; TOGGLE FUNCTIONS | |
746 | ||
747 | (defun iswitchb-toggle-case () | |
19db4308 | 748 | "Toggle the value of variable `iswitchb-case'." |
962a4216 RS |
749 | (interactive) |
750 | (setq iswitchb-case (not iswitchb-case)) | |
751 | ;; ask for list to be regenerated. | |
181688f2 | 752 | (setq iswitchb-rescan t)) |
962a4216 RS |
753 | |
754 | (defun iswitchb-toggle-regexp () | |
755 | "Toggle the value of `iswitchb-regexp'." | |
756 | (interactive) | |
757 | (setq iswitchb-regexp (not iswitchb-regexp)) | |
758 | ;; ask for list to be regenerated. | |
181688f2 | 759 | (setq iswitchb-rescan t)) |
962a4216 RS |
760 | |
761 | (defun iswitchb-toggle-ignore () | |
762 | "Toggle ignoring buffers specified with `iswitchb-buffer-ignore'." | |
763 | (interactive) | |
764 | (if iswitchb-buffer-ignore | |
765 | (progn | |
766 | (setq iswitchb-buffer-ignore-orig iswitchb-buffer-ignore) | |
181688f2 | 767 | (setq iswitchb-buffer-ignore nil)) |
962a4216 | 768 | ;; else |
181688f2 | 769 | (setq iswitchb-buffer-ignore iswitchb-buffer-ignore-orig)) |
6b0cc1b5 | 770 | (iswitchb-make-buflist iswitchb-default) |
962a4216 | 771 | ;; ask for list to be regenerated. |
181688f2 | 772 | (setq iswitchb-rescan t)) |
962a4216 | 773 | |
ccd2f997 KH |
774 | (defun iswitchb-exit-minibuffer () |
775 | "Exit minibuffer, but make sure we have a match if one is needed." | |
776 | (interactive) | |
777 | (if (or (not iswitchb-require-match) | |
778 | (iswitchb-existing-buffer-p)) | |
4dddd07f SE |
779 | (progn |
780 | (setq iswitchb-exit 'usefirst) | |
781 | (throw 'exit nil)))) | |
962a4216 RS |
782 | |
783 | (defun iswitchb-select-buffer-text () | |
6c56c80b RS |
784 | "Select the buffer named by the prompt. |
785 | If no buffer exactly matching the prompt exists, maybe create a new one." | |
962a4216 RS |
786 | (interactive) |
787 | (setq iswitchb-exit 'takeprompt) | |
788 | (exit-minibuffer)) | |
789 | ||
36a3b01c | 790 | (defun iswitchb-find-file () |
19db4308 | 791 | "Drop into `find-file' from buffer switching." |
36a3b01c RS |
792 | (interactive) |
793 | (setq iswitchb-exit 'findfile) | |
794 | (exit-minibuffer)) | |
795 | ||
c4ae2d51 JW |
796 | (eval-when-compile |
797 | (defvar recentf-list)) | |
798 | ||
19db4308 | 799 | (defun iswitchb-next-match () |
962a4216 RS |
800 | "Put first element of `iswitchb-matches' at the end of the list." |
801 | (interactive) | |
36a3b01c | 802 | (let ((next (cadr iswitchb-matches))) |
c4ae2d51 JW |
803 | (if (and (null next) iswitchb-virtual-buffers) |
804 | (setq recentf-list | |
805 | (iswitchb-chop recentf-list | |
806 | (cdr (cadr iswitchb-virtual-buffers)))) | |
807 | (setq iswitchb-buflist (iswitchb-chop iswitchb-buflist next))) | |
181688f2 | 808 | (setq iswitchb-rescan t))) |
962a4216 | 809 | |
19db4308 | 810 | (defun iswitchb-prev-match () |
962a4216 RS |
811 | "Put last element of `iswitchb-matches' at the front of the list." |
812 | (interactive) | |
36a3b01c | 813 | (let ((prev (car (last iswitchb-matches)))) |
c4ae2d51 JW |
814 | (if (and (null prev) iswitchb-virtual-buffers) |
815 | (setq recentf-list | |
816 | (iswitchb-chop recentf-list | |
817 | (cdr (car (last iswitchb-virtual-buffers))))) | |
818 | (setq iswitchb-buflist (iswitchb-chop iswitchb-buflist prev))) | |
181688f2 | 819 | (setq iswitchb-rescan t))) |
36a3b01c RS |
820 | |
821 | (defun iswitchb-chop (list elem) | |
822 | "Remove all elements before ELEM and put them at the end of LIST." | |
823 | (let ((ret nil) | |
824 | (next nil) | |
825 | (sofar nil)) | |
826 | (while (not ret) | |
827 | (setq next (car list)) | |
828 | (if (equal next elem) | |
829 | (setq ret (append list (nreverse sofar))) | |
830 | ;; else | |
831 | (progn | |
832 | (setq list (cdr list)) | |
833 | (setq sofar (cons next sofar))))) | |
834 | ret)) | |
962a4216 | 835 | |
962a4216 RS |
836 | ;;; CREATE LIST OF ALL CURRENT BUFFERS |
837 | ||
ccd2f997 | 838 | (defun iswitchb-make-buflist (default) |
6c56c80b | 839 | "Set `iswitchb-buflist' to the current list of buffers. |
36a3b01c | 840 | Currently visible buffers are put at the end of the list. |
19db4308 | 841 | The hook `iswitchb-make-buflist-hook' is run after the list has been |
36a3b01c | 842 | created to allow the user to further modify the order of the buffer names |
ccd2f997 KH |
843 | in this list. If DEFAULT is non-nil, and corresponds to an existing buffer, |
844 | it is put to the start of the list." | |
19db4308 | 845 | (setq iswitchb-buflist |
36a3b01c | 846 | (let* ((iswitchb-current-buffers (iswitchb-get-buffers-in-frames)) |
ceba0dac GM |
847 | (iswitchb-temp-buflist |
848 | (delq nil | |
849 | (mapcar | |
850 | (lambda (x) | |
851 | (let ((b-name (buffer-name x))) | |
852 | (if (not | |
853 | (or | |
854 | (iswitchb-ignore-buffername-p b-name) | |
855 | (memq b-name iswitchb-current-buffers))) | |
856 | b-name))) | |
857 | (buffer-list (and iswitchb-use-frame-buffer-list | |
858 | (selected-frame))))))) | |
859 | (setq iswitchb-temp-buflist | |
860 | (nconc iswitchb-temp-buflist iswitchb-current-buffers)) | |
962a4216 | 861 | (run-hooks 'iswitchb-make-buflist-hook) |
ceba0dac | 862 | ;; Should this be after the hooks, or should the hooks be the |
ccd2f997 KH |
863 | ;; final thing to be run? |
864 | (if default | |
865 | (progn | |
19db4308 | 866 | (setq iswitchb-temp-buflist |
02e526ad | 867 | (delete default iswitchb-temp-buflist)) |
19db4308 | 868 | (setq iswitchb-temp-buflist |
02e526ad SE |
869 | (cons default iswitchb-temp-buflist)))) |
870 | iswitchb-temp-buflist))) | |
962a4216 | 871 | |
36a3b01c | 872 | (defun iswitchb-to-end (lst) |
02e526ad | 873 | "Move the elements from LST to the end of `iswitchb-temp-buflist'." |
19db4308 DL |
874 | (mapcar |
875 | (lambda (elem) | |
02e526ad | 876 | (setq iswitchb-temp-buflist (delq elem iswitchb-temp-buflist))) |
36a3b01c | 877 | lst) |
ceba0dac | 878 | (setq iswitchb-temp-buflist (nconc iswitchb-temp-buflist lst))) |
962a4216 | 879 | |
962a4216 | 880 | (defun iswitchb-get-buffers-in-frames (&optional current) |
962a4216 | 881 | "Return the list of buffers that are visible in the current frame. |
19db4308 | 882 | If optional argument CURRENT is given, restrict searching to the |
962a4216 RS |
883 | current frame, rather than all frames, regardless of value of |
884 | `iswitchb-all-frames'." | |
962a4216 | 885 | (let ((iswitchb-bufs-in-frame nil)) |
962a4216 | 886 | (walk-windows 'iswitchb-get-bufname nil |
19db4308 | 887 | (if current |
962a4216 RS |
888 | nil |
889 | iswitchb-all-frames)) | |
890 | iswitchb-bufs-in-frame)) | |
891 | ||
962a4216 RS |
892 | (defun iswitchb-get-bufname (win) |
893 | "Used by `iswitchb-get-buffers-in-frames' to walk through all windows." | |
ae5ac7d0 RS |
894 | (let ((buf (buffer-name (window-buffer win)))) |
895 | (if (not (member buf iswitchb-bufs-in-frame)) | |
896 | ;; Only add buf if it is not already in list. | |
897 | ;; This prevents same buf in two different windows being | |
898 | ;; put into the list twice. | |
899 | (setq iswitchb-bufs-in-frame | |
900 | (cons buf iswitchb-bufs-in-frame))))) | |
962a4216 | 901 | |
962a4216 RS |
902 | ;;; FIND MATCHING BUFFERS |
903 | ||
904 | (defun iswitchb-set-matches () | |
905 | "Set `iswitchb-matches' to the list of buffers matching prompt." | |
962a4216 RS |
906 | (if iswitchb-rescan |
907 | (setq iswitchb-matches | |
181688f2 | 908 | (let* ((buflist iswitchb-buflist)) |
36a3b01c | 909 | (iswitchb-get-matched-buffers iswitchb-text iswitchb-regexp |
c4ae2d51 JW |
910 | buflist)) |
911 | iswitchb-virtual-buffers nil))) | |
36a3b01c RS |
912 | |
913 | (defun iswitchb-get-matched-buffers (regexp | |
914 | &optional string-format buffer-list) | |
6b0cc1b5 SE |
915 | "Return buffers matching REGEXP. |
916 | If STRING-FORMAT is nil, consider REGEXP as just a string. | |
6c56c80b | 917 | BUFFER-LIST can be list of buffers or list of strings." |
8097dd15 | 918 | (let* ((case-fold-search (iswitchb-case)) |
962a4216 RS |
919 | ;; need reverse since we are building up list backwards |
920 | (list (reverse buffer-list)) | |
6b0cc1b5 | 921 | (do-string (stringp (car list))) |
962a4216 | 922 | name |
181688f2 | 923 | ret) |
b21688f0 | 924 | (setq iswitchb-invalid-regexp nil) |
2cf248ab EZ |
925 | (catch 'invalid-regexp |
926 | (mapcar | |
927 | (lambda (x) | |
928 | ||
929 | (if do-string | |
930 | (setq name x) ;We already have the name | |
931 | (setq name (buffer-name x))) | |
932 | ||
933 | (cond | |
b21688f0 EZ |
934 | ((and (if (not string-format) |
935 | (string-match (regexp-quote regexp) name) | |
936 | (condition-case error | |
937 | (string-match regexp name) | |
938 | (invalid-regexp | |
939 | (setq iswitchb-invalid-regexp t) | |
940 | (throw 'invalid-regexp (setq ret (cdr error)))))) | |
2cf248ab | 941 | (not (iswitchb-ignore-buffername-p name))) |
b21688f0 | 942 | (setq ret (cons name ret))))) |
2cf248ab | 943 | list)) |
181688f2 | 944 | ret)) |
962a4216 RS |
945 | |
946 | (defun iswitchb-ignore-buffername-p (bufname) | |
947 | "Return t if the buffer BUFNAME should be ignored." | |
948 | (let ((data (match-data)) | |
949 | (re-list iswitchb-buffer-ignore) | |
950 | ignorep | |
181688f2 | 951 | nextstr) |
962a4216 RS |
952 | (while re-list |
953 | (setq nextstr (car re-list)) | |
954 | (cond | |
955 | ((stringp nextstr) | |
956 | (if (string-match nextstr bufname) | |
957 | (progn | |
958 | (setq ignorep t) | |
959 | (setq re-list nil)))) | |
960 | ((fboundp nextstr) | |
961 | (if (funcall nextstr bufname) | |
962 | (progn | |
963 | (setq ignorep t) | |
181688f2 | 964 | (setq re-list nil))))) |
962a4216 | 965 | (setq re-list (cdr re-list))) |
25c80f5c | 966 | (set-match-data data) |
962a4216 RS |
967 | |
968 | ;; return the result | |
181688f2 | 969 | ignorep)) |
962a4216 | 970 | |
962a4216 RS |
971 | (defun iswitchb-word-matching-substring (word) |
972 | "Return part of WORD before 1st match to `iswitchb-change-word-sub'. | |
973 | If `iswitchb-change-word-sub' cannot be found in WORD, return nil." | |
8097dd15 | 974 | (let ((case-fold-search (iswitchb-case))) |
962a4216 RS |
975 | (let ((m (string-match iswitchb-change-word-sub word))) |
976 | (if m | |
977 | (substring word m) | |
978 | ;; else no match | |
979 | nil)))) | |
980 | ||
962a4216 RS |
981 | (defun iswitchb-find-common-substring (lis subs) |
982 | "Return common string following SUBS in each element of LIS." | |
983 | (let (res | |
984 | alist | |
181688f2 | 985 | iswitchb-change-word-sub) |
962a4216 RS |
986 | (setq iswitchb-change-word-sub |
987 | (if iswitchb-regexp | |
988 | subs | |
989 | (regexp-quote subs))) | |
990 | (setq res (mapcar 'iswitchb-word-matching-substring lis)) | |
ccd2f997 | 991 | (setq res (delq nil res)) ;; remove any nil elements (shouldn't happen) |
962a4216 RS |
992 | (setq alist (mapcar 'iswitchb-makealist res)) ;; could use an OBARRAY |
993 | ||
994 | ;; try-completion returns t if there is an exact match. | |
8097dd15 | 995 | (let ((completion-ignore-case (iswitchb-case))) |
962a4216 | 996 | |
181688f2 | 997 | (try-completion subs alist)))) |
962a4216 RS |
998 | |
999 | (defun iswitchb-makealist (res) | |
1000 | "Return dotted pair (RES . 1)." | |
1001 | (cons res 1)) | |
1002 | ||
1003 | ;; from Wayne Mesard <wmesard@esd.sgi.com> | |
1004 | (defun iswitchb-rotate-list (lis) | |
19db4308 | 1005 | "Destructively remove the last element from LIS. |
962a4216 RS |
1006 | Return the modified list with the last element prepended to it." |
1007 | (if (<= (length lis) 1) | |
1008 | lis | |
1009 | (let ((las lis) | |
1010 | (prev lis)) | |
1011 | (while (consp (cdr las)) | |
1012 | (setq prev las | |
1013 | las (cdr las))) | |
1014 | (setcdr prev nil) | |
181688f2 | 1015 | (cons (car las) lis)))) |
962a4216 RS |
1016 | |
1017 | (defun iswitchb-completion-help () | |
8ae3ef6e | 1018 | "Show possible completions in a *Completions* buffer." |
962a4216 | 1019 | ;; we could allow this buffer to be used to select match, but I think |
36a3b01c | 1020 | ;; choose-completion-string will need redefining, so it just inserts |
19db4308 | 1021 | ;; choice with out any previous input. |
962a4216 | 1022 | (interactive) |
36a3b01c | 1023 | (setq iswitchb-rescan nil) |
8ae3ef6e SM |
1024 | (let ((buf (current-buffer)) |
1025 | (temp-buf "*Completions*") | |
1026 | (win)) | |
ccd2f997 | 1027 | |
b21688f0 EZ |
1028 | (if (and (eq last-command this-command) |
1029 | (not iswitchb-common-match-inserted)) | |
ccd2f997 KH |
1030 | ;; scroll buffer |
1031 | (progn | |
1032 | (set-buffer temp-buf) | |
1033 | (setq win (get-buffer-window temp-buf)) | |
1034 | (if (pos-visible-in-window-p (point-max) win) | |
1035 | (set-window-start win (point-min)) | |
1036 | (scroll-other-window)) | |
181688f2 | 1037 | (set-buffer buf)) |
f1180544 | 1038 | |
ccd2f997 | 1039 | (with-output-to-temp-buffer temp-buf |
2d839509 | 1040 | (if (featurep 'xemacs) |
f1180544 | 1041 | |
ccd2f997 KH |
1042 | ;; XEmacs extents are put on by default, doesn't seem to be |
1043 | ;; any way of switching them off. | |
1044 | (display-completion-list (if iswitchb-matches | |
1045 | iswitchb-matches | |
1046 | iswitchb-buflist) | |
1047 | :help-string "iswitchb " | |
19db4308 DL |
1048 | :activate-callback |
1049 | (lambda (x y z) | |
1050 | (message "doesn't work yet, sorry!"))) | |
ccd2f997 | 1051 | ;; else running Emacs |
19db4308 DL |
1052 | (with-current-buffer standard-output |
1053 | (fundamental-mode)) | |
ccd2f997 | 1054 | (display-completion-list (if iswitchb-matches |
19db4308 | 1055 | iswitchb-matches |
b21688f0 EZ |
1056 | iswitchb-buflist)))) |
1057 | (setq iswitchb-common-match-inserted nil)))) | |
ccd2f997 | 1058 | |
36a3b01c RS |
1059 | ;;; KILL CURRENT BUFFER |
1060 | ||
1061 | (defun iswitchb-kill-buffer () | |
ccd2f997 | 1062 | "Kill the buffer at the head of `iswitchb-matches'." |
36a3b01c RS |
1063 | (interactive) |
1064 | (let ( (enable-recursive-minibuffers t) | |
1065 | buf) | |
1066 | ||
1067 | (setq buf (car iswitchb-matches)) | |
1068 | ;; check to see if buf is non-nil. | |
1069 | (if buf | |
1070 | (progn | |
1071 | (kill-buffer buf) | |
1072 | ||
1073 | ;; Check if buffer exists. XEmacs gnuserv.el makes alias | |
1074 | ;; for kill-buffer which does not return t if buffer is | |
1075 | ;; killed, so we can't rely on kill-buffer return value. | |
1076 | (if (get-buffer buf) | |
1077 | ;; buffer couldn't be killed. | |
19db4308 | 1078 | (setq iswitchb-rescan t) |
36a3b01c RS |
1079 | ;; else buffer was killed so remove name from list. |
1080 | (setq iswitchb-buflist (delq buf iswitchb-buflist))))))) | |
1081 | ||
962a4216 RS |
1082 | ;;; VISIT CHOSEN BUFFER |
1083 | (defun iswitchb-visit-buffer (buffer) | |
1084 | "Visit buffer named BUFFER according to `iswitchb-method'." | |
1085 | (let* (win newframe) | |
1086 | (cond | |
1087 | ((eq iswitchb-method 'samewindow) | |
1088 | (switch-to-buffer buffer)) | |
1089 | ||
1090 | ((memq iswitchb-method '(always-frame maybe-frame)) | |
1091 | (cond | |
1092 | ((and (setq win (iswitchb-window-buffer-p buffer)) | |
1093 | (or (eq iswitchb-method 'always-frame) | |
1094 | (y-or-n-p "Jump to frame? "))) | |
1095 | (setq newframe (window-frame win)) | |
2d839509 | 1096 | (if (fboundp 'select-frame-set-input-focus) |
4d8ae757 RS |
1097 | (select-frame-set-input-focus newframe) |
1098 | (raise-frame newframe) | |
1099 | (select-frame newframe) | |
1100 | ) | |
1101 | (select-window win)) | |
962a4216 RS |
1102 | (t |
1103 | ;; No buffer in other frames... | |
1104 | (switch-to-buffer buffer) | |
1105 | ))) | |
1106 | ||
962a4216 RS |
1107 | ((eq iswitchb-method 'otherwindow) |
1108 | (switch-to-buffer-other-window buffer)) | |
1109 | ||
888472e0 RS |
1110 | ((eq iswitchb-method 'display) |
1111 | (display-buffer buffer)) | |
1112 | ||
962a4216 RS |
1113 | ((eq iswitchb-method 'otherframe) |
1114 | (progn | |
1115 | (switch-to-buffer-other-frame buffer) | |
2d839509 | 1116 | (if (fboundp 'select-frame-set-input-focus) |
4d8ae757 | 1117 | (select-frame-set-input-focus (selected-frame))) |
181688f2 | 1118 | ))))) |
962a4216 RS |
1119 | |
1120 | (defun iswitchb-possible-new-buffer (buf) | |
1121 | "Possibly create and visit a new buffer called BUF." | |
1122 | ||
1123 | (let ((newbufcreated)) | |
1124 | (if (and iswitchb-newbuffer | |
1125 | (or | |
1126 | (not iswitchb-prompt-newbuffer) | |
f1180544 | 1127 | |
962a4216 RS |
1128 | (and iswitchb-prompt-newbuffer |
1129 | (y-or-n-p | |
1130 | (format | |
1131 | "No buffer matching `%s', create one? " | |
1132 | buf))))) | |
1133 | ;; then create a new buffer | |
1134 | (progn | |
1135 | (setq newbufcreated (get-buffer-create buf)) | |
1136 | (if (fboundp 'set-buffer-major-mode) | |
1137 | (set-buffer-major-mode newbufcreated)) | |
1138 | (iswitchb-visit-buffer newbufcreated)) | |
1139 | ;; else wont create new buffer | |
181688f2 | 1140 | (message (format "no buffer matching `%s'" buf))))) |
962a4216 RS |
1141 | |
1142 | (defun iswitchb-window-buffer-p (buffer) | |
6c56c80b RS |
1143 | "Return window pointer if BUFFER is visible in another frame. |
1144 | If BUFFER is visible in the current frame, return nil." | |
962a4216 | 1145 | (interactive) |
962a4216 RS |
1146 | (let ((blist (iswitchb-get-buffers-in-frames 'current))) |
1147 | ;;If the buffer is visible in current frame, return nil | |
1148 | (if (memq buffer blist) | |
1149 | nil | |
ccd2f997 KH |
1150 | ;; maybe in other frame or icon |
1151 | (get-buffer-window buffer 0) ; better than 'visible | |
962a4216 RS |
1152 | ))) |
1153 | ||
962a4216 | 1154 | (defun iswitchb-default-keybindings () |
6c56c80b | 1155 | "Set up default keybindings for `iswitchb-buffer'. |
ee5897a4 | 1156 | Call this function to override the normal bindings. This function also |
19db4308 DL |
1157 | adds a hook to the minibuffer. |
1158 | ||
1159 | Obsolescent. Use `iswitchb-mode'." | |
962a4216 | 1160 | (interactive) |
ee5897a4 | 1161 | (add-hook 'minibuffer-setup-hook 'iswitchb-minibuffer-setup) |
322524b2 SE |
1162 | (global-set-key "\C-xb" 'iswitchb-buffer) |
1163 | (global-set-key "\C-x4b" 'iswitchb-buffer-other-window) | |
1164 | (global-set-key "\C-x4\C-o" 'iswitchb-display-buffer) | |
1165 | (global-set-key "\C-x5b" 'iswitchb-buffer-other-frame)) | |
962a4216 | 1166 | |
962a4216 RS |
1167 | (defun iswitchb-buffer () |
1168 | "Switch to another buffer. | |
1169 | ||
1170 | The buffer name is selected interactively by typing a substring. The | |
1171 | buffer is displayed according to `iswitchb-default-method' -- the | |
1172 | default is to show it in the same window, unless it is already visible | |
6c56c80b RS |
1173 | in another frame. |
1174 | For details of keybindings, do `\\[describe-function] iswitchb'." | |
962a4216 RS |
1175 | (interactive) |
1176 | (setq iswitchb-method iswitchb-default-method) | |
ccd2f997 | 1177 | (iswitchb)) |
962a4216 | 1178 | |
962a4216 RS |
1179 | (defun iswitchb-buffer-other-window () |
1180 | "Switch to another buffer and show it in another window. | |
1181 | The buffer name is selected interactively by typing a substring. | |
6c56c80b | 1182 | For details of keybindings, do `\\[describe-function] iswitchb'." |
962a4216 RS |
1183 | (interactive) |
1184 | (setq iswitchb-method 'otherwindow) | |
ccd2f997 | 1185 | (iswitchb)) |
962a4216 | 1186 | |
888472e0 RS |
1187 | (defun iswitchb-display-buffer () |
1188 | "Display a buffer in another window but don't select it. | |
1189 | The buffer name is selected interactively by typing a substring. | |
1190 | For details of keybindings, do `\\[describe-function] iswitchb'." | |
1191 | (interactive) | |
1192 | (setq iswitchb-method 'display) | |
ccd2f997 | 1193 | (iswitchb)) |
888472e0 | 1194 | |
962a4216 RS |
1195 | (defun iswitchb-buffer-other-frame () |
1196 | "Switch to another buffer and show it in another frame. | |
1197 | The buffer name is selected interactively by typing a substring. | |
6c56c80b | 1198 | For details of keybindings, do `\\[describe-function] iswitchb'." |
962a4216 RS |
1199 | (interactive) |
1200 | (setq iswitchb-method 'otherframe) | |
962a4216 RS |
1201 | (iswitchb)) |
1202 | ||
36a3b01c | 1203 | ;;; XEmacs hack for showing default buffer |
962a4216 RS |
1204 | |
1205 | ;; The first time we enter the minibuffer, Emacs puts up the default | |
ccd2f997 | 1206 | ;; buffer to switch to, but XEmacs doesn't -- presumably there is a |
36a3b01c RS |
1207 | ;; subtle difference in the two versions of post-command-hook. The |
1208 | ;; default is shown for both whenever we delete all of our text | |
1209 | ;; though, indicating its just a problem the first time we enter the | |
1210 | ;; function. To solve this, we use another entry hook for emacs to | |
1211 | ;; show the default the first time we enter the minibuffer. | |
962a4216 | 1212 | |
6b0cc1b5 | 1213 | (defun iswitchb-init-XEmacs-trick () |
6c56c80b RS |
1214 | "Display default buffer when first entering minibuffer. |
1215 | This is a hack for XEmacs, and should really be handled by `iswitchb-exhibit'." | |
962a4216 RS |
1216 | (if (iswitchb-entryfn-p) |
1217 | (progn | |
36a3b01c | 1218 | (iswitchb-exhibit) |
962a4216 RS |
1219 | (goto-char (point-min))))) |
1220 | ||
36a3b01c | 1221 | ;; add this hook for XEmacs only. |
2d839509 | 1222 | (if (featurep 'xemacs) |
19db4308 | 1223 | (add-hook 'iswitchb-minibuffer-setup-hook |
6b0cc1b5 | 1224 | 'iswitchb-init-XEmacs-trick)) |
962a4216 | 1225 | |
36a3b01c | 1226 | ;;; XEmacs / backspace key |
ccd2f997 | 1227 | ;; For some reason, if the backspace key is pressed in XEmacs, the |
962a4216 | 1228 | ;; line gets confused, so I've added a simple key definition to make |
19db4308 | 1229 | ;; backspace act like the normal delete key. |
962a4216 RS |
1230 | |
1231 | (defun iswitchb-xemacs-backspacekey () | |
1232 | "Bind backspace to `backward-delete-char'." | |
1233 | (define-key iswitchb-mode-map '[backspace] 'backward-delete-char) | |
181688f2 | 1234 | (define-key iswitchb-mode-map '[(meta backspace)] 'backward-kill-word)) |
962a4216 | 1235 | |
2d839509 | 1236 | (if (featurep 'xemacs) |
19db4308 | 1237 | (add-hook 'iswitchb-define-mode-map-hook |
962a4216 RS |
1238 | 'iswitchb-xemacs-backspacekey)) |
1239 | ||
962a4216 RS |
1240 | ;;; ICOMPLETE TYPE CODE |
1241 | ||
1242 | (defun iswitchb-exhibit () | |
6c56c80b | 1243 | "Find matching buffers and display a list in the minibuffer. |
962a4216 RS |
1244 | Copied from `icomplete-exhibit' with two changes: |
1245 | 1. It prints a default buffer name when there is no text yet entered. | |
1246 | 2. It calls my completion routine rather than the standard completion." | |
962a4216 | 1247 | (if iswitchb-use-mycompletion |
600f9d03 | 1248 | (let ((contents (buffer-substring (minibuffer-prompt-end) (point-max))) |
962a4216 RS |
1249 | (buffer-undo-list t)) |
1250 | (save-excursion | |
1251 | (goto-char (point-max)) | |
1252 | ; Register the end of input, so we | |
1253 | ; know where the extra stuff | |
1254 | ; (match-status info) begins: | |
1255 | (if (not (boundp 'iswitchb-eoinput)) | |
1256 | ;; In case it got wiped out by major mode business: | |
1257 | (make-local-variable 'iswitchb-eoinput)) | |
1258 | (setq iswitchb-eoinput (point)) | |
1259 | ;; Update the list of matches | |
1260 | (setq iswitchb-text contents) | |
1261 | (iswitchb-set-matches) | |
1262 | (setq iswitchb-rescan t) | |
1263 | (iswitchb-set-common-completion) | |
1264 | ||
1265 | ;; Insert the match-status information: | |
f1180544 | 1266 | (insert (iswitchb-completions |
b21688f0 | 1267 | contents)))))) |
26119624 | 1268 | |
c4ae2d51 JW |
1269 | (eval-when-compile |
1270 | (defvar most-len) | |
1271 | (defvar most-is-exact)) | |
1272 | ||
c80d9534 JW |
1273 | (defun iswitchb-output-completion (com) |
1274 | (if (= (length com) most-len) | |
1275 | ;; Most is one exact match, | |
1276 | ;; note that and leave out | |
1277 | ;; for later indication: | |
1278 | (ignore | |
1279 | (setq most-is-exact t)) | |
1280 | (substring com most-len))) | |
1281 | ||
b21688f0 | 1282 | (defun iswitchb-completions (name) |
962a4216 RS |
1283 | "Return the string that is displayed after the user's text. |
1284 | Modified from `icomplete-completions'." | |
f1180544 | 1285 | |
962a4216 RS |
1286 | (let ((comps iswitchb-matches) |
1287 | ; "-determined" - only one candidate | |
b21688f0 EZ |
1288 | (open-bracket-determined "[") |
1289 | (close-bracket-determined "]") | |
962a4216 RS |
1290 | ;"-prospects" - more than one candidate |
1291 | (open-bracket-prospects "{") | |
1292 | (close-bracket-prospects "}") | |
181688f2 | 1293 | first) |
962a4216 | 1294 | |
b21688f0 | 1295 | (if (and iswitchb-use-faces comps) |
962a4216 RS |
1296 | (progn |
1297 | (setq first (car comps)) | |
1298 | (setq first (format "%s" first)) | |
1299 | (put-text-property 0 (length first) 'face | |
19db4308 | 1300 | (if (= (length comps) 1) |
b21688f0 | 1301 | (if iswitchb-invalid-regexp |
54907cdc KS |
1302 | 'iswitchb-invalid-regexp |
1303 | 'iswitchb-single-match) | |
1304 | 'iswitchb-current-match) | |
19db4308 | 1305 | first) |
181688f2 | 1306 | (setq comps (cons first (cdr comps))))) |
962a4216 | 1307 | |
c4ae2d51 JW |
1308 | ;; If no buffers matched, and virtual buffers are being used, then |
1309 | ;; consult the list of past visited files, to see if we can find | |
1310 | ;; the file which the user might thought was still open. | |
1311 | (when (and iswitchb-use-virtual-buffers (null comps) | |
1312 | recentf-list) | |
1313 | (setq iswitchb-virtual-buffers nil) | |
1314 | (let ((head recentf-list) name) | |
1315 | (while head | |
1316 | (if (and (setq name (file-name-nondirectory (car head))) | |
1317 | (string-match (if iswitchb-regexp | |
1318 | iswitchb-text | |
1319 | (regexp-quote iswitchb-text)) name) | |
1320 | (null (get-file-buffer (car head))) | |
1321 | (not (assoc name iswitchb-virtual-buffers)) | |
1322 | (not (iswitchb-ignore-buffername-p name)) | |
1323 | (file-exists-p (car head))) | |
1324 | (setq iswitchb-virtual-buffers | |
1325 | (cons (cons name (car head)) | |
1326 | iswitchb-virtual-buffers))) | |
1327 | (setq head (cdr head))) | |
1328 | (setq iswitchb-virtual-buffers (nreverse iswitchb-virtual-buffers) | |
1329 | comps (mapcar 'car iswitchb-virtual-buffers)) | |
1330 | (let ((comp comps)) | |
1331 | (while comp | |
1332 | (put-text-property 0 (length (car comp)) | |
54907cdc | 1333 | 'face 'iswitchb-virtual-matches |
c4ae2d51 JW |
1334 | (car comp)) |
1335 | (setq comp (cdr comp)))))) | |
1336 | ||
962a4216 RS |
1337 | (cond ((null comps) (format " %sNo match%s" |
1338 | open-bracket-determined | |
1339 | close-bracket-determined)) | |
1340 | ||
b21688f0 EZ |
1341 | (iswitchb-invalid-regexp |
1342 | (concat " " (car comps))) | |
1343 | ((null (cdr comps)) ;one match | |
1344 | (concat | |
1345 | (if (if (not iswitchb-regexp) | |
1346 | (= (length name) | |
1347 | (length (car comps))) | |
1348 | (string-match name (car comps)) | |
1349 | (string-equal (match-string 0 (car comps)) | |
1350 | (car comps))) | |
1351 | "" | |
1352 | (concat open-bracket-determined | |
19db4308 | 1353 | ;; when there is one match, show the |
962a4216 RS |
1354 | ;; matching buffer name in full |
1355 | (car comps) | |
b21688f0 EZ |
1356 | close-bracket-determined)) |
1357 | (if (not iswitchb-use-faces) " [Matched]"))) | |
962a4216 | 1358 | (t ;multiple matches |
c80d9534 JW |
1359 | (if (and iswitchb-max-to-show |
1360 | (> (length comps) iswitchb-max-to-show)) | |
1361 | (setq comps | |
1362 | (append | |
5f5d410a JW |
1363 | (let ((res nil) |
1364 | (comp comps) | |
1365 | (end (/ iswitchb-max-to-show 2))) | |
1366 | (while (>= (setq end (1- end)) 0) | |
1367 | (setq res (cons (car comp) res) | |
1368 | comp (cdr comp))) | |
1369 | (nreverse res)) | |
c80d9534 | 1370 | (list "...") |
5f5d410a JW |
1371 | (nthcdr (- (length comps) |
1372 | (/ iswitchb-max-to-show 2)) comps)))) | |
962a4216 RS |
1373 | (let* ( |
1374 | ;;(most (try-completion name candidates predicate)) | |
1375 | (most nil) | |
1376 | (most-len (length most)) | |
1377 | most-is-exact | |
c4ae2d51 JW |
1378 | (alternatives |
1379 | (mapconcat (if most 'iswitchb-output-completion | |
1380 | 'identity) comps ","))) | |
962a4216 RS |
1381 | |
1382 | (concat | |
1383 | ||
1384 | ;; put in common completion item -- what you get by | |
1385 | ;; pressing tab | |
4e141ed7 SE |
1386 | (if (and (stringp iswitchb-common-match-string) |
1387 | (> (length iswitchb-common-match-string) (length name))) | |
962a4216 | 1388 | (concat open-bracket-determined |
19db4308 | 1389 | (substring iswitchb-common-match-string |
962a4216 | 1390 | (length name)) |
181688f2 | 1391 | close-bracket-determined)) |
962a4216 RS |
1392 | ;; end of partial matches... |
1393 | ||
1394 | ;; think this bit can be ignored. | |
1395 | (and (> most-len (length name)) | |
1396 | (concat open-bracket-determined | |
1397 | (substring most (length name)) | |
1398 | close-bracket-determined)) | |
f1180544 | 1399 | |
962a4216 RS |
1400 | ;; list all alternatives |
1401 | open-bracket-prospects | |
1402 | (if most-is-exact | |
1403 | (concat "," alternatives) | |
1404 | alternatives) | |
181688f2 | 1405 | close-bracket-prospects)))))) |
962a4216 RS |
1406 | |
1407 | (defun iswitchb-minibuffer-setup () | |
6c56c80b RS |
1408 | "Set up minibuffer for `iswitchb-buffer'. |
1409 | Copied from `icomplete-minibuffer-setup-hook'." | |
8ae3ef6e SM |
1410 | (when (iswitchb-entryfn-p) |
1411 | (set (make-local-variable 'iswitchb-use-mycompletion) t) | |
1412 | (add-hook 'pre-command-hook 'iswitchb-pre-command nil t) | |
1413 | (add-hook 'post-command-hook 'iswitchb-post-command nil t) | |
1414 | (run-hooks 'iswitchb-minibuffer-setup-hook))) | |
962a4216 RS |
1415 | |
1416 | (defun iswitchb-pre-command () | |
6c56c80b | 1417 | "Run before command in `iswitchb-buffer'." |
962a4216 RS |
1418 | (iswitchb-tidy)) |
1419 | ||
962a4216 | 1420 | (defun iswitchb-post-command () |
6c56c80b | 1421 | "Run after command in `iswitchb-buffer'." |
181688f2 | 1422 | (iswitchb-exhibit)) |
962a4216 RS |
1423 | |
1424 | (defun iswitchb-tidy () | |
1425 | "Remove completions display, if any, prior to new user input. | |
1426 | Copied from `icomplete-tidy'." | |
1427 | ||
1428 | (if (and (boundp 'iswitchb-eoinput) | |
1429 | iswitchb-eoinput) | |
f1180544 | 1430 | |
962a4216 RS |
1431 | (if (> iswitchb-eoinput (point-max)) |
1432 | ;; Oops, got rug pulled out from under us - reinit: | |
1433 | (setq iswitchb-eoinput (point-max)) | |
1434 | (let ((buffer-undo-list buffer-undo-list )) ; prevent entry | |
1435 | (delete-region iswitchb-eoinput (point-max)))) | |
f1180544 | 1436 | |
962a4216 RS |
1437 | ;; Reestablish the local variable 'cause minibuffer-setup is weird: |
1438 | (make-local-variable 'iswitchb-eoinput) | |
1439 | (setq iswitchb-eoinput 1))) | |
1440 | ||
962a4216 | 1441 | (defun iswitchb-entryfn-p () |
26119624 | 1442 | "Return non-nil if we are using `iswitchb-buffer'." |
c7b89861 | 1443 | (eq iswitchb-minibuf-depth (minibuffer-depth))) |
ccd2f997 | 1444 | |
962a4216 | 1445 | (defun iswitchb-summaries-to-end () |
6c56c80b RS |
1446 | "Move the summaries to the end of the list. |
1447 | This is an example function which can be hooked on to | |
1448 | `iswitchb-make-buflist-hook'. Any buffer matching the regexps | |
1449 | `Summary' or `output\*$'are put to the end of the list." | |
19db4308 DL |
1450 | (let ((summaries (delq nil |
1451 | (mapcar | |
1452 | (lambda (x) | |
1453 | (if (string-match "Summary\\|output\\*$" x) | |
1454 | x)) | |
1455 | iswitchb-temp-buflist)))) | |
36a3b01c | 1456 | (iswitchb-to-end summaries))) |
962a4216 | 1457 | |
8097dd15 GM |
1458 | (defun iswitchb-case () |
1459 | "Return non-nil iff we should ignore case when matching. | |
1460 | See the variable `iswitchb-case' for details." | |
1461 | (if iswitchb-case | |
2d839509 | 1462 | (if (featurep 'xemacs) |
8097dd15 GM |
1463 | (isearch-no-upper-case-p iswitchb-text) |
1464 | (isearch-no-upper-case-p iswitchb-text t)))) | |
1465 | ||
19db4308 | 1466 | ;;;###autoload |
8ae3ef6e | 1467 | (define-minor-mode iswitchb-mode |
19db4308 DL |
1468 | "Toggle Iswitchb global minor mode. |
1469 | With arg, turn Iswitchb mode on if and only iff ARG is positive. | |
1470 | This mode enables switching between buffers using substrings. See | |
1471 | `iswitchb' for details." | |
8ae3ef6e | 1472 | nil nil iswitchb-global-map :global t :group 'iswitchb |
19db4308 DL |
1473 | (if iswitchb-mode |
1474 | (add-hook 'minibuffer-setup-hook 'iswitchb-minibuffer-setup) | |
8ae3ef6e | 1475 | (remove-hook 'minibuffer-setup-hook 'iswitchb-minibuffer-setup))) |
19db4308 | 1476 | |
962a4216 RS |
1477 | (provide 'iswitchb) |
1478 | ||
ab5796a9 | 1479 | ;;; arch-tag: d74198ae-753f-44f2-b34f-0c515398d90a |
6c56c80b | 1480 | ;;; iswitchb.el ends here |