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6c56c80b | 1 | ;;; iswitchb.el --- switch between buffers using substrings |
962a4216 | 2 | |
ab422c4d | 3 | ;; Copyright (C) 1996-1997, 2000-2013 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 |
962a4216 | 8 | |
6c56c80b RS |
9 | ;; This file is part of GNU Emacs. |
10 | ||
eb3fa2cf | 11 | ;; GNU Emacs is free software: you can redistribute it and/or modify |
962a4216 | 12 | ;; it under the terms of the GNU General Public License as published by |
eb3fa2cf GM |
13 | ;; the Free Software Foundation, either version 3 of the License, or |
14 | ;; (at your option) any later version. | |
962a4216 | 15 | |
6c56c80b | 16 | ;; GNU Emacs is distributed in the hope that it will be useful, |
962a4216 RS |
17 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of |
18 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | ;; GNU General Public License for more details. | |
20 | ||
21 | ;; You should have received a copy of the GNU General Public License | |
eb3fa2cf | 22 | ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. |
962a4216 | 23 | |
c6e5b93f | 24 | ;;; Commentary: |
962a4216 | 25 | |
c6e5b93f | 26 | ;; Installation: |
19db4308 DL |
27 | ;; To get the functions in this package bound to keys, use |
28 | ;; M-x iswitchb-mode or customize the option `iswitchb-mode'. | |
79f0a5ed SE |
29 | ;; Alternatively, add the following line to your .emacs: |
30 | ;; (iswitchb-mode 1) | |
962a4216 | 31 | |
962a4216 | 32 | ;; As you type in a substring, the list of buffers currently matching |
19db4308 | 33 | ;; the substring is displayed as you type. The list is ordered so |
962a4216 RS |
34 | ;; that the most recent buffers visited come at the start of the list. |
35 | ;; The buffer at the start of the list will be the one visited when | |
36 | ;; you press return. By typing more of the substring, the list is | |
37 | ;; narrowed down so that gradually the buffer you want will be at the | |
19db4308 | 38 | ;; top of the list. Alternatively, you can use C-s and C-r to rotate |
962a4216 RS |
39 | ;; buffer names in the list until the one you want is at the top of |
40 | ;; the list. Completion is also available so that you can see what is | |
41 | ;; common to all of the matching buffers as you type. | |
42 | ||
43 | ;; This code is similar to a couple of other packages. Michael R Cook | |
8097dd15 | 44 | ;; <cook@sightpath.com> wrote a similar buffer switching package, but |
962a4216 RS |
45 | ;; does exact matching rather than substring matching on buffer names. |
46 | ;; I also modified a couple of functions from icomplete.el to provide | |
47 | ;; the completion feedback in the minibuffer. | |
48 | ||
19db4308 | 49 | ;;; Example |
962a4216 | 50 | |
4d8ae757 RS |
51 | ;; If I have two buffers called "123456" and "123", with "123456" the |
52 | ;; most recent, when I use iswitchb, I first of all get presented with | |
53 | ;; the list of all the buffers | |
962a4216 | 54 | ;; |
19db4308 | 55 | ;; iswitch {123456,123} |
962a4216 RS |
56 | ;; |
57 | ;; If I then press 2: | |
58 | ;; iswitch 2[3]{123456,123} | |
59 | ;; | |
60 | ;; The list in {} are the matching buffers, most recent first (buffers | |
61 | ;; visible in the current frame are put at the end of the list by | |
62 | ;; default). At any time I can select the item at the head of the | |
2d839509 SE |
63 | ;; list by pressing RET. I can also put the first element at the end |
64 | ;; of the list by pressing C-s, or put the last element at the head of | |
65 | ;; the list by pressing C-r. The item in [] indicates what can be | |
66 | ;; added to my input by pressing TAB. In this case, I will get "3" | |
67 | ;; added to my input. So, press TAB: | |
962a4216 RS |
68 | ;; iswitch 23{123456,123} |
69 | ;; | |
70 | ;; At this point, I still have two matching buffers. | |
71 | ;; If I want the first buffer in the list, I simply press RET. If I | |
72 | ;; wanted the second in the list, I could press C-s to move it to the | |
73 | ;; top of the list and then RET to select it. | |
74 | ;; | |
4d8ae757 | 75 | ;; However, if I type 4, I only have one match left: |
962a4216 RS |
76 | ;; iswitch 234[123456] [Matched] |
77 | ;; | |
4d8ae757 RS |
78 | ;; Since there is only one matching buffer left, it is given in [] and we |
79 | ;; see the text [Matched] afterwards. I can now press TAB or RET to go | |
80 | ;; to that buffer. | |
962a4216 RS |
81 | ;; |
82 | ;; If however, I now type "a": | |
83 | ;; iswitch 234a [No match] | |
84 | ;; There are no matching buffers. If I press RET or TAB, I can be | |
85 | ;; prompted to create a new buffer called "234a". | |
86 | ;; | |
87 | ;; Of course, where this function comes in really useful is when you | |
88 | ;; can specify the buffer using only a few keystrokes. In the above | |
89 | ;; example, the quickest way to get to the "123456" buffer would be | |
ccd2f997 | 90 | ;; just to type 4 and then RET (assuming there isn't any newer buffer |
962a4216 RS |
91 | ;; with 4 in its name). |
92 | ||
93 | ;; To see a full list of all matching buffers in a separate buffer, | |
94 | ;; hit ? or press TAB when there are no further completions to the | |
ccd2f997 KH |
95 | ;; substring. Repeated TAB presses will scroll you through this |
96 | ;; separate buffer. | |
962a4216 | 97 | |
36a3b01c RS |
98 | ;; The buffer at the head of the list can be killed by pressing C-k. |
99 | ;; If the buffer needs saving, you will be queried before the buffer | |
100 | ;; is killed. | |
101 | ||
102 | ;; If you find that the file you are after is not in a buffer, you can | |
103 | ;; press C-x C-f to immediately drop into find-file. | |
104 | ||
4d8ae757 RS |
105 | ;; See the doc string of iswitchb for full keybindings and features. |
106 | ;; (describe-function 'iswitchb) | |
962a4216 | 107 | |
8097dd15 GM |
108 | ;; Case matching: The case of strings when matching can be ignored or |
109 | ;; used depending on the value of iswitchb-case (default is the same | |
110 | ;; as case-fold-search, normally t). Imagine you have the following | |
19db4308 | 111 | ;; buffers: |
8097dd15 GM |
112 | ;; |
113 | ;; INBOX *info* *scratch* | |
114 | ;; | |
115 | ;; Then these will be the matching buffers, depending on how you type | |
116 | ;; the two letters `in' and the value of iswitchb-case: | |
117 | ;; | |
118 | ;; iswitchb-case user input | matching buffers | |
119 | ;; ---------------------------------------------- | |
19db4308 DL |
120 | ;; nil in | *info* |
121 | ;; t in | INBOX, *info* | |
122 | ;; t IN | INBOX | |
123 | ;; t In | [No match] | |
8097dd15 | 124 | |
e1dbe924 | 125 | ;;; Customization |
962a4216 RS |
126 | |
127 | ;; See the User Variables section below for easy ways to change the | |
36a3b01c RS |
128 | ;; functionality of the program. These are accessible using the |
129 | ;; custom package. | |
8ae3ef6e | 130 | ;; To modify the keybindings, use something like: |
962a4216 | 131 | ;; |
8ae3ef6e | 132 | ;;(add-hook 'iswitchb-mode-hook 'iswitchb-my-keys) |
962a4216 | 133 | ;;(defun iswitchb-my-keys () |
ccd2f997 | 134 | ;; "Add my keybindings for iswitchb." |
8ae3ef6e | 135 | ;; (define-key iswitchb-mode-map " " 'iswitchb-next-match)) |
962a4216 | 136 | ;; |
6b0cc1b5 | 137 | ;; Seeing all the matching buffers |
36a3b01c | 138 | ;; |
962a4216 | 139 | ;; If you have many matching buffers, they may not all fit onto one |
f05b502e GM |
140 | ;; line of the minibuffer. In Emacs 21, the variable |
141 | ;; `resize-mini-windows' controls how many lines of the minibuffer can | |
142 | ;; be seen. For older versions of emacs, you can use | |
143 | ;; `resize-minibuffer-mode'. You can also limit iswitchb so that it | |
962a4216 RS |
144 | ;; only shows a certain number of lines -- see the documentation for |
145 | ;; `iswitchb-minibuffer-setup-hook'. | |
146 | ||
6b0cc1b5 | 147 | ;; Changing the list of buffers |
962a4216 RS |
148 | |
149 | ;; By default, the list of current buffers is most recent first, | |
150 | ;; oldest last, with the exception that the buffers visible in the | |
151 | ;; current frame are put at the end of the list. A hook exists to | |
152 | ;; allow other functions to order the list. For example, if you add: | |
153 | ;; | |
154 | ;; (add-hook 'iswitchb-make-buflist-hook 'iswitchb-summaries-to-end) | |
155 | ;; | |
156 | ;; then all buffers matching "Summary" are moved to the end of the | |
157 | ;; list. (I find this handy for keeping the INBOX Summary and so on | |
158 | ;; out of the way.) It also moves buffers matching "output\*$" to the | |
90a02640 | 159 | ;; end of the list (these are created by AUCTeX when compiling.) |
962a4216 RS |
160 | ;; Other functions could be made available which alter the list of |
161 | ;; matching buffers (either deleting or rearranging elements.) | |
162 | ||
163 | ;; Font-Lock | |
164 | ||
b21688f0 | 165 | ;; font-lock is used to highlight the first matching buffer. To |
da6062e6 | 166 | ;; switch this off, set (setq iswitchb-use-faces nil). Coloring of |
b21688f0 EZ |
167 | ;; the matching buffer name was suggested by Carsten Dominik |
168 | ;; (dominik@strw.leidenuniv.nl) | |
962a4216 | 169 | |
6b0cc1b5 | 170 | ;; Replacement for read-buffer |
962a4216 | 171 | |
ccd2f997 KH |
172 | ;; iswitchb-read-buffer has been written to be a drop in replacement |
173 | ;; for the normal buffer selection routine `read-buffer'. To use | |
c6e5b93f | 174 | ;; iswitch for all buffer selections in Emacs, add: |
ccd2f997 | 175 | ;; (setq read-buffer-function 'iswitchb-read-buffer) |
4d8ae757 | 176 | ;; (This variable was introduced in Emacs 20.3.) |
fffa137c | 177 | ;; XEmacs users can get the same behavior by doing: |
19db4308 | 178 | ;; (defalias 'read-buffer 'iswitchb-read-buffer) |
c6e5b93f | 179 | ;; since `read-buffer' is defined in lisp. |
36a3b01c | 180 | |
4d8ae757 RS |
181 | ;; Using iswitchb for other completion tasks. |
182 | ||
a2c060f6 | 183 | ;; Kin Cho (kin@neoscale.com) sent the following suggestion to use |
f1180544 | 184 | ;; iswitchb for other completion tasks. |
4d8ae757 RS |
185 | ;; |
186 | ;; (defun my-icompleting-read (prompt choices) | |
187 | ;; "Use iswitch as a completing-read replacement to choose from | |
188 | ;; choices. PROMPT is a string to prompt with. CHOICES is a list of | |
189 | ;; strings to choose from." | |
190 | ;; (let ((iswitchb-make-buflist-hook | |
191 | ;; (lambda () | |
192 | ;; (setq iswitchb-temp-buflist choices)))) | |
193 | ;; (iswitchb-read-buffer prompt))) | |
194 | ;; | |
195 | ;; example: | |
196 | ;; (my-icompleting-read "Which fruit? " ' | |
197 | ;; ("apple" "pineapple" "pear" "bananas" "oranges") ) | |
198 | ||
a2c060f6 PJ |
199 | ;; Kin Cho also suggested the following defun. Once you have a subset of |
200 | ;; matching buffers matching your current prompt, you can then press | |
201 | ;; e.g. C-o to restrict matching to those buffers and clearing the prompt: | |
202 | ;; (defun iswitchb-exclude-nonmatching() | |
203 | ;; "Make iswitchb work on only the currently matching names." | |
204 | ;; (interactive) | |
205 | ;; (setq iswitchb-buflist iswitchb-matches) | |
206 | ;; (setq iswitchb-rescan t) | |
207 | ;; (delete-minibuffer-contents)) | |
208 | ;; | |
209 | ;; (add-hook 'iswitchb-define-mode-map-hook | |
4f91a816 | 210 | ;; (lambda () (define-key |
f1180544 | 211 | ;; iswitchb-mode-map "\C-o" |
a2c060f6 PJ |
212 | ;; 'iswitchb-exclude-nonmatching))) |
213 | ||
fffa137c | 214 | ;; Other lisp packages extend iswitchb behavior to other tasks. See |
4d8ae757 RS |
215 | ;; ido.el (by Kim Storm) and mcomplete.el (Yuji Minejima). |
216 | ||
217 | ;; Window managers: Switching frames/focus follows mouse; Sawfish. | |
218 | ||
219 | ;; If you switch to a buffer that is visible in another frame, | |
220 | ;; iswitchb can switch focus to that frame. If your window manager | |
221 | ;; uses "click to focus" policy for window selection, you should also | |
222 | ;; set focus-follows-mouse to nil. | |
223 | ||
224 | ;; iswitch functionality has also been implemented for switching | |
225 | ;; between windows in the Sawfish window manager. | |
226 | ||
6b0cc1b5 SE |
227 | ;; Regexp matching |
228 | ||
b21688f0 EZ |
229 | ;; There is provision for regexp matching within iswitchb, enabled |
230 | ;; through `iswitchb-regexp'. This allows you to type `c$' for | |
231 | ;; example and see all buffer names ending in `c'. No completion | |
232 | ;; mechanism is currently offered when regexp searching. | |
6b0cc1b5 | 233 | |
ccd2f997 | 234 | ;;; TODO |
36a3b01c | 235 | |
09ae5da1 | 236 | ;;; Acknowledgments |
962a4216 RS |
237 | |
238 | ;; Thanks to Jari Aalto <jari.aalto@poboxes.com> for help with the | |
239 | ;; first version of this package, iswitch-buffer. Thanks also to many | |
240 | ;; others for testing earlier versions. | |
241 | ||
242 | ;;; Code: | |
243 | ||
b21688f0 EZ |
244 | (require 'font-lock) |
245 | ||
962a4216 RS |
246 | ;;; User Variables |
247 | ;; | |
248 | ;; These are some things you might want to change. | |
249 | ||
36a3b01c | 250 | (defgroup iswitchb nil |
c6e5b93f | 251 | "Switch between buffers using substrings." |
f5f727f8 | 252 | :group 'convenience |
19db4308 | 253 | :group 'completion |
36a3b01c | 254 | :link '(emacs-commentary-link :tag "Commentary" "iswitchb.el") |
19db4308 | 255 | :link '(url-link "http://www.anc.ed.ac.uk/~stephen/emacs/") |
181688f2 | 256 | :link '(emacs-library-link :tag "Lisp File" "iswitchb.el")) |
36a3b01c RS |
257 | |
258 | (defcustom iswitchb-case case-fold-search | |
9201cc28 | 259 | "Non-nil if searching of buffer names should ignore case. |
8097dd15 GM |
260 | If this is non-nil but the user input has any upper case letters, matching |
261 | is temporarily case sensitive." | |
36a3b01c RS |
262 | :type 'boolean |
263 | :group 'iswitchb) | |
962a4216 | 264 | |
36a3b01c | 265 | (defcustom iswitchb-buffer-ignore |
962a4216 | 266 | '("^ ") |
9201cc28 | 267 | "List of regexps or functions matching buffer names to ignore. |
6c56c80b RS |
268 | For example, traditional behavior is not to list buffers whose names begin |
269 | with a space, for which the regexp is `^ '. See the source file for | |
252ca122 | 270 | example functions that filter buffer names." |
e47525c4 | 271 | :type '(repeat (choice regexp function)) |
36a3b01c | 272 | :group 'iswitchb) |
1a1dd431 | 273 | (put 'iswitchb-buffer-ignore 'risky-local-variable t) |
36a3b01c | 274 | |
c80d9534 | 275 | (defcustom iswitchb-max-to-show nil |
9201cc28 | 276 | "If non-nil, limit the number of names shown in the minibuffer. |
f329780b SE |
277 | If this value is N, and N is greater than the number of matching |
278 | buffers, the first N/2 and the last N/2 matching buffers are | |
279 | shown. This can greatly speed up iswitchb if you have a | |
280 | multitude of buffers open." | |
79e1c9d4 | 281 | :type '(choice (const :tag "Show all" nil) integer) |
c80d9534 JW |
282 | :group 'iswitchb) |
283 | ||
c4ae2d51 | 284 | (defcustom iswitchb-use-virtual-buffers nil |
9201cc28 | 285 | "If non-nil, refer to past buffers when none match. |
c4ae2d51 JW |
286 | This feature relies upon the `recentf' package, which will be |
287 | enabled if this variable is configured to a non-nil value." | |
288 | :type 'boolean | |
289 | :require 'recentf | |
290 | :set (function | |
291 | (lambda (sym value) | |
533b22e2 | 292 | (if value (recentf-mode 1)) |
c4ae2d51 JW |
293 | (set sym value))) |
294 | :group 'iswitchb) | |
295 | ||
296 | (defvar iswitchb-virtual-buffers nil) | |
297 | ||
c9403808 | 298 | (defcustom iswitchb-cannot-complete-hook 'iswitchb-completion-help |
9201cc28 | 299 | "Hook run when `iswitchb-complete' can't complete any more. |
c9403808 RS |
300 | The most useful values are `iswitchb-completion-help', which pops up a |
301 | window with completion alternatives, or `iswitchb-next-match' or | |
302 | `iswitchb-prev-match', which cycle the buffer list." | |
303 | :type 'hook | |
304 | :group 'iswitchb) | |
305 | ||
3da360a7 SM |
306 | ;; Examples for setting the value of iswitchb-buffer-ignore |
307 | ;;(defun iswitchb-ignore-c-mode (name) | |
308 | ;; "Ignore all c mode buffers -- example function for iswitchb." | |
309 | ;; (with-current-buffer name | |
310 | ;; (derived-mode-p 'c-mode))) | |
962a4216 | 311 | |
3da360a7 SM |
312 | ;;(setq iswitchb-buffer-ignore '("^ " iswitchb-ignore-c-mode)) |
313 | ;;(setq iswitchb-buffer-ignore '("^ " "\\.c\\'" "\\.h\\'")) | |
962a4216 | 314 | |
36a3b01c | 315 | (defcustom iswitchb-default-method 'always-frame |
9201cc28 | 316 | "How to switch to new buffer when using `iswitchb-buffer'. |
962a4216 RS |
317 | Possible values: |
318 | `samewindow' Show new buffer in same window | |
319 | `otherwindow' Show new buffer in another window (same frame) | |
888472e0 | 320 | `display' Display buffer in another window without switching to it |
962a4216 RS |
321 | `otherframe' Show new buffer in another frame |
322 | `maybe-frame' If a buffer is visible in another frame, prompt to ask if you | |
323 | you want to see the buffer in the same window of the current | |
324 | frame or in the other frame. | |
c6e5b93f | 325 | `always-frame' If a buffer is visible in another frame, raise that |
36a3b01c | 326 | frame. Otherwise, visit the buffer in the same window." |
19db4308 | 327 | :type '(choice (const samewindow) |
c6e5b93f SE |
328 | (const otherwindow) |
329 | (const display) | |
19db4308 | 330 | (const otherframe) |
c6e5b93f SE |
331 | (const maybe-frame) |
332 | (const always-frame)) | |
36a3b01c | 333 | :group 'iswitchb) |
962a4216 | 334 | |
36a3b01c | 335 | (defcustom iswitchb-regexp nil |
9201cc28 | 336 | "Non-nil means that `iswitchb' will do regexp matching. |
6b0cc1b5 | 337 | Value can be toggled within `iswitchb' using `iswitchb-toggle-regexp'." |
36a3b01c RS |
338 | :type 'boolean |
339 | :group 'iswitchb) | |
340 | ||
36a3b01c | 341 | (defcustom iswitchb-newbuffer t |
9201cc28 | 342 | "Non-nil means create new buffer if no buffer matches substring. |
36a3b01c RS |
343 | See also `iswitchb-prompt-newbuffer'." |
344 | :type 'boolean | |
345 | :group 'iswitchb) | |
962a4216 | 346 | |
36a3b01c | 347 | (defcustom iswitchb-prompt-newbuffer t |
9201cc28 | 348 | "Non-nil means prompt user to confirm before creating new buffer. |
36a3b01c RS |
349 | See also `iswitchb-newbuffer'." |
350 | :type 'boolean | |
351 | :group 'iswitchb) | |
352 | ||
cd6ef82d GM |
353 | (define-obsolete-variable-alias 'iswitchb-use-fonts 'iswitchb-use-faces "22.1") |
354 | ||
b21688f0 | 355 | (defcustom iswitchb-use-faces t |
9201cc28 | 356 | "Non-nil means use font-lock faces for showing first match." |
36a3b01c RS |
357 | :type 'boolean |
358 | :group 'iswitchb) | |
962a4216 | 359 | |
f5bd1691 | 360 | (defcustom iswitchb-use-frame-buffer-list nil |
9201cc28 | 361 | "Non-nil means use the currently selected frame's buffer list." |
f5bd1691 GM |
362 | :type 'boolean |
363 | :group 'iswitchb) | |
364 | ||
36a3b01c | 365 | (defcustom iswitchb-make-buflist-hook nil |
19db4308 | 366 | "Hook to run when list of matching buffers is created." |
36a3b01c RS |
367 | :type 'hook |
368 | :group 'iswitchb) | |
369 | ||
6a0e4c60 SE |
370 | (defcustom iswitchb-delim "," |
371 | "Delimiter to put between buffer names when displaying results." | |
372 | :type 'string | |
373 | :group 'iswitchb) | |
374 | ||
85e8b518 | 375 | (defcustom iswitchb-all-frames 'visible |
78f3273a CY |
376 | "Argument to pass to `walk-windows' when iswitchb is finding buffers. |
377 | See documentation of `walk-windows' for useful values." | |
378 | :type '(choice (const :tag "Selected frame only" nil) | |
379 | (const :tag "All existing frames" t) | |
380 | (const :tag "All visible frames" visible) | |
381 | (const :tag "All frames on this terminal" 0)) | |
382 | :group 'iswitchb) | |
962a4216 | 383 | |
6b0cc1b5 | 384 | (defcustom iswitchb-minibuffer-setup-hook nil |
19db4308 | 385 | "Iswitchb-specific customization of minibuffer setup. |
962a4216 | 386 | |
4837b516 | 387 | This hook is run during minibuffer setup if `iswitchb' is active. |
33a316ba SE |
388 | For instance: |
389 | \(add-hook 'iswitchb-minibuffer-setup-hook | |
390 | '\(lambda () (set (make-local-variable 'max-mini-window-height) 3))) | |
391 | will constrain the minibuffer to a maximum height of 3 lines when | |
392 | iswitchb is running." | |
6b0cc1b5 SE |
393 | :type 'hook |
394 | :group 'iswitchb) | |
395 | ||
54907cdc | 396 | (defface iswitchb-single-match |
b21688f0 EZ |
397 | '((t |
398 | (:inherit font-lock-comment-face))) | |
399 | "Iswitchb face for single matching buffer name." | |
400 | :version "22.1" | |
401 | :group 'iswitchb) | |
402 | ||
54907cdc | 403 | (defface iswitchb-current-match |
b21688f0 EZ |
404 | '((t |
405 | (:inherit font-lock-function-name-face))) | |
406 | "Iswitchb face for current matching buffer name." | |
407 | :version "22.1" | |
408 | :group 'iswitchb) | |
409 | ||
54907cdc | 410 | (defface iswitchb-virtual-matches |
b21688f0 EZ |
411 | '((t |
412 | (:inherit font-lock-builtin-face))) | |
413 | "Iswitchb face for matching virtual buffer names. | |
414 | See also `iswitchb-use-virtual-buffers'." | |
415 | :version "22.1" | |
416 | :group 'iswitchb) | |
417 | ||
54907cdc | 418 | (defface iswitchb-invalid-regexp |
b21688f0 EZ |
419 | '((t |
420 | (:inherit font-lock-warning-face))) | |
421 | "Iswitchb face for indicating invalid regexp. " | |
422 | :version "22.1" | |
423 | :group 'iswitchb) | |
424 | ||
6b0cc1b5 SE |
425 | ;; Do we need the variable iswitchb-use-mycompletion? |
426 | ||
6b0cc1b5 SE |
427 | ;;; Internal Variables |
428 | ||
429 | (defvar iswitchb-method nil | |
19db4308 | 430 | "Stores the method for viewing the selected buffer. |
6b0cc1b5 SE |
431 | Its value is one of `samewindow', `otherwindow', `display', `otherframe', |
432 | `maybe-frame' or `always-frame'. See `iswitchb-default-method' for | |
433 | details of values.") | |
962a4216 RS |
434 | |
435 | (defvar iswitchb-eoinput 1 | |
436 | "Point where minibuffer input ends and completion info begins. | |
6c56c80b | 437 | Copied from `icomplete-eoinput'.") |
962a4216 RS |
438 | (make-variable-buffer-local 'iswitchb-eoinput) |
439 | ||
962a4216 RS |
440 | (defvar iswitchb-buflist nil |
441 | "Stores the current list of buffers that will be searched through. | |
442 | The list is ordered, so that the most recent buffers come first, | |
443 | although by default, the buffers visible in the current frame are put | |
444 | at the end of the list. Created by `iswitchb-make-buflist'.") | |
445 | ||
446 | ;; todo -- is this necessary? | |
447 | ||
448 | (defvar iswitchb-use-mycompletion nil | |
19db4308 | 449 | "Non-nil means use `iswitchb-buffer' completion feedback. |
6c56c80b RS |
450 | Should only be set to t by iswitchb functions, so that it doesn't |
451 | interfere with other minibuffer usage.") | |
962a4216 | 452 | |
19db4308 | 453 | (defvar iswitchb-change-word-sub nil |
962a4216 RS |
454 | "Private variable used by `iswitchb-word-matching-substring'.") |
455 | ||
962a4216 RS |
456 | (defvar iswitchb-common-match-string nil |
457 | "Stores the string that is common to all matching buffers.") | |
458 | ||
962a4216 RS |
459 | (defvar iswitchb-rescan nil |
460 | "Non-nil means we need to regenerate the list of matching buffers.") | |
461 | ||
462 | (defvar iswitchb-text nil | |
463 | "Stores the users string as it is typed in.") | |
464 | ||
465 | (defvar iswitchb-matches nil | |
ccd2f997 | 466 | "List of buffers currently matching `iswitchb-text'.") |
962a4216 | 467 | |
19db4308 DL |
468 | (defvar iswitchb-mode-map |
469 | (let ((map (make-sparse-keymap))) | |
470 | (set-keymap-parent map minibuffer-local-map) | |
471 | (define-key map "?" 'iswitchb-completion-help) | |
472 | (define-key map "\C-s" 'iswitchb-next-match) | |
473 | (define-key map "\C-r" 'iswitchb-prev-match) | |
d7e76a89 J |
474 | (define-key map [?\C-.] 'iswitchb-next-match) |
475 | (define-key map [?\C-,] 'iswitchb-prev-match) | |
19db4308 DL |
476 | (define-key map "\t" 'iswitchb-complete) |
477 | (define-key map "\C-j" 'iswitchb-select-buffer-text) | |
478 | (define-key map "\C-t" 'iswitchb-toggle-regexp) | |
479 | (define-key map "\C-x\C-f" 'iswitchb-find-file) | |
480 | (define-key map "\C-c" 'iswitchb-toggle-case) | |
481 | (define-key map "\C-k" 'iswitchb-kill-buffer) | |
482 | (define-key map "\C-m" 'iswitchb-exit-minibuffer) | |
483 | map) | |
484 | "Minibuffer keymap for `iswitchb-buffer'.") | |
485 | ||
486 | (defvar iswitchb-global-map | |
487 | (let ((map (make-sparse-keymap))) | |
51443e4f SM |
488 | (dolist (b '((switch-to-buffer . iswitchb-buffer) |
489 | (switch-to-buffer-other-window . iswitchb-buffer-other-window) | |
490 | (switch-to-buffer-other-frame . iswitchb-buffer-other-frame) | |
491 | (display-buffer . iswitchb-display-buffer))) | |
492 | (if (fboundp 'command-remapping) | |
493 | (define-key map (vector 'remap (car b)) (cdr b)) | |
494 | (substitute-key-definition (car b) (cdr b) map global-map))) | |
19db4308 | 495 | map) |
971cb834 | 496 | "Global keymap for `iswitchb-mode'.") |
19db4308 DL |
497 | |
498 | (defvar iswitchb-history nil | |
6c56c80b | 499 | "History of buffers selected using `iswitchb-buffer'.") |
962a4216 | 500 | |
19db4308 DL |
501 | (defvar iswitchb-exit nil |
502 | "Flag to monitor how `iswitchb-buffer' exits. | |
6c56c80b RS |
503 | If equal to `takeprompt', we use the prompt as the buffer name to be |
504 | selected.") | |
962a4216 RS |
505 | |
506 | (defvar iswitchb-buffer-ignore-orig nil | |
507 | "Stores original value of `iswitchb-buffer-ignore'.") | |
508 | ||
6b0cc1b5 SE |
509 | (defvar iswitchb-default nil |
510 | "Default buffer for iswitchb.") | |
962a4216 | 511 | |
02e526ad SE |
512 | ;; The following variables are needed to keep the byte compiler quiet. |
513 | (defvar iswitchb-require-match nil | |
514 | "Non-nil if matching buffer must be selected.") | |
515 | ||
516 | (defvar iswitchb-temp-buflist nil | |
517 | "Stores a temporary version of the buffer list being created.") | |
518 | ||
519 | (defvar iswitchb-bufs-in-frame nil | |
520 | "List of the buffers visible in the current frame.") | |
521 | ||
c7b89861 EZ |
522 | (defvar iswitchb-minibuf-depth nil |
523 | "Value we expect to be returned by `minibuffer-depth' in the minibuffer.") | |
524 | ||
b21688f0 EZ |
525 | (defvar iswitchb-common-match-inserted nil |
526 | "Non-nil if we have just inserted a common match in the minibuffer.") | |
527 | ||
528 | (defvar iswitchb-invalid-regexp) | |
529 | ||
962a4216 RS |
530 | ;;; FUNCTIONS |
531 | ||
962a4216 RS |
532 | ;;; MAIN FUNCTION |
533 | (defun iswitchb () | |
534 | "Switch to buffer matching a substring. | |
535 | As you type in a string, all of the buffers matching the string are | |
536 | displayed. When you have found the buffer you want, it can then be | |
537 | selected. As you type, most keys have their normal keybindings, | |
538 | except for the following: | |
539 | \\<iswitchb-mode-map> | |
540 | ||
541 | RET Select the buffer at the front of the list of matches. If the | |
6c56c80b | 542 | list is empty, possibly prompt to create new buffer. |
962a4216 RS |
543 | |
544 | \\[iswitchb-select-buffer-text] Select the current prompt as the buffer. | |
545 | If no buffer is found, prompt for a new one. | |
546 | ||
547 | \\[iswitchb-next-match] Put the first element at the end of the list. | |
548 | \\[iswitchb-prev-match] Put the last element at the start of the list. | |
19db4308 | 549 | \\[iswitchb-complete] Complete a common suffix to the current string that |
962a4216 RS |
550 | matches all buffers. If there is only one match, select that buffer. |
551 | If there is no common suffix, show a list of all matching buffers | |
552 | in a separate window. | |
ccd2f997 | 553 | \\[iswitchb-toggle-regexp] Toggle regexp searching. |
962a4216 | 554 | \\[iswitchb-toggle-case] Toggle case-sensitive searching of buffer names. |
36a3b01c | 555 | \\[iswitchb-completion-help] Show list of matching buffers in separate window. |
19db4308 | 556 | \\[iswitchb-find-file] Exit iswitchb and drop into `find-file'. |
36a3b01c | 557 | \\[iswitchb-kill-buffer] Kill buffer at head of buffer list." |
962a4216 RS |
558 | ;;\\[iswitchb-toggle-ignore] Toggle ignoring certain buffers (see \ |
559 | ;;`iswitchb-buffer-ignore') | |
f1180544 | 560 | |
8ae3ef6e | 561 | (let* ((prompt "iswitch ") |
b21688f0 | 562 | iswitchb-invalid-regexp |
8ae3ef6e | 563 | (buf (iswitchb-read-buffer prompt))) |
ccd2f997 | 564 | |
ccd2f997 KH |
565 | ;;(message "chosen text %s" iswitchb-final-text) |
566 | ;; Choose the buffer name: either the text typed in, or the head | |
567 | ;; of the list of matches | |
568 | ||
569 | (cond ( (eq iswitchb-exit 'findfile) | |
570 | (call-interactively 'find-file)) | |
b21688f0 EZ |
571 | (iswitchb-invalid-regexp |
572 | (message "Won't make invalid regexp named buffer")) | |
ccd2f997 KH |
573 | (t |
574 | ;; View the buffer | |
c6e5b93f | 575 | ;;(message "go to buf %s" buf) |
ccd2f997 KH |
576 | ;; Check buf is non-nil. |
577 | (if buf | |
578 | (if (get-buffer buf) | |
579 | ;; buffer exists, so view it and then exit | |
580 | (iswitchb-visit-buffer buf) | |
581 | ;; else buffer doesn't exist | |
582 | (iswitchb-possible-new-buffer buf))) | |
181688f2 | 583 | )))) |
ccd2f997 | 584 | |
c4ae2d51 JW |
585 | (defun iswitchb-read-buffer (prompt &optional default require-match |
586 | start matches-set) | |
ccd2f997 | 587 | "Replacement for the built-in `read-buffer'. |
19db4308 | 588 | Return the name of a buffer selected. |
c4ae2d51 JW |
589 | PROMPT is the prompt to give to the user. |
590 | DEFAULT if given is the default buffer to be selected, which will | |
591 | go to the front of the list. | |
252ca122 | 592 | If REQUIRE-MATCH is non-nil, an existing buffer must be selected. |
c4ae2d51 JW |
593 | If START is a string, the selection process is started with that |
594 | string. | |
595 | If MATCHES-SET is non-nil, the buflist is not updated before | |
596 | the selection process begins. Used by isearchb.el." | |
59f7af81 CY |
597 | ;; The map is generated every time so that it can inherit new |
598 | ;; functions. | |
599 | (let ((map (copy-keymap minibuffer-local-map)) | |
89468837 | 600 | buf-sel iswitchb-final-text |
59f7af81 CY |
601 | icomplete-mode) ; prevent icomplete starting up |
602 | (define-key map "?" 'iswitchb-completion-help) | |
603 | (define-key map "\C-s" 'iswitchb-next-match) | |
604 | (define-key map "\C-r" 'iswitchb-prev-match) | |
605 | (define-key map "\t" 'iswitchb-complete) | |
606 | (define-key map "\C-j" 'iswitchb-select-buffer-text) | |
607 | (define-key map "\C-t" 'iswitchb-toggle-regexp) | |
608 | (define-key map "\C-x\C-f" 'iswitchb-find-file) | |
609 | (define-key map "\C-n" 'iswitchb-toggle-ignore) | |
610 | (define-key map "\C-c" 'iswitchb-toggle-case) | |
611 | (define-key map "\C-k" 'iswitchb-kill-buffer) | |
612 | (define-key map "\C-m" 'iswitchb-exit-minibuffer) | |
613 | (setq iswitchb-mode-map map) | |
614 | (run-hooks 'iswitchb-define-mode-map-hook) | |
615 | ||
962a4216 | 616 | (setq iswitchb-exit nil) |
6b0cc1b5 SE |
617 | (setq iswitchb-default |
618 | (if (bufferp default) | |
619 | (buffer-name default) | |
620 | default)) | |
c4ae2d51 JW |
621 | (setq iswitchb-text (or start "")) |
622 | (unless matches-set | |
623 | (setq iswitchb-rescan t) | |
624 | (iswitchb-make-buflist iswitchb-default) | |
625 | (iswitchb-set-matches)) | |
19db4308 | 626 | (let |
ccd2f997 | 627 | ((minibuffer-local-completion-map iswitchb-mode-map) |
c7b89861 EZ |
628 | ;; Record the minibuffer depth that we expect to find once |
629 | ;; the minibuffer is set up and iswitchb-entryfn-p is called. | |
630 | (iswitchb-minibuf-depth (1+ (minibuffer-depth))) | |
181688f2 | 631 | (iswitchb-require-match require-match)) |
36a3b01c | 632 | ;; prompt the user for the buffer name |
19db4308 | 633 | (setq iswitchb-final-text (completing-read |
c4ae2d51 | 634 | prompt ;the prompt |
660e161f | 635 | '(("dummy" . 1)) ;table |
c4ae2d51 JW |
636 | nil ;predicate |
637 | nil ;require-match [handled elsewhere] | |
638 | start ;initial-contents | |
ccd2f997 | 639 | 'iswitchb-history))) |
4dddd07f SE |
640 | (if (and (not (eq iswitchb-exit 'usefirst)) |
641 | (get-buffer iswitchb-final-text)) | |
8ae3ef6e | 642 | ;; This happens for example if the buffer was chosen with the mouse. |
c4ae2d51 JW |
643 | (setq iswitchb-matches (list iswitchb-final-text) |
644 | iswitchb-virtual-buffers nil)) | |
645 | ||
646 | ;; If no buffer matched, but a virtual buffer was selected, visit | |
647 | ;; that file now and act as though that buffer had been selected. | |
648 | (if (and iswitchb-virtual-buffers | |
649 | (not (iswitchb-existing-buffer-p))) | |
4078fd57 SE |
650 | (let ((virt (car iswitchb-virtual-buffers)) |
651 | (new-buf)) | |
06b60517 | 652 | ;; Keep the name of the buffer returned by find-file-noselect, as |
4078fd57 SE |
653 | ;; the buffer 'virt' could be a symlink to a file of a different name. |
654 | (setq new-buf (buffer-name (find-file-noselect (cdr virt)))) | |
655 | (setq iswitchb-matches (list new-buf) | |
c4ae2d51 | 656 | iswitchb-virtual-buffers nil))) |
8ae3ef6e | 657 | |
ccd2f997 | 658 | ;; Handling the require-match must be done in a better way. |
c4ae2d51 JW |
659 | (if (and require-match |
660 | (not (iswitchb-existing-buffer-p))) | |
19db4308 | 661 | (error "Must specify valid buffer")) |
ccd2f997 | 662 | |
c4ae2d51 JW |
663 | (if (or (eq iswitchb-exit 'takeprompt) |
664 | (null iswitchb-matches)) | |
ccd2f997 KH |
665 | (setq buf-sel iswitchb-final-text) |
666 | ;; else take head of list | |
667 | (setq buf-sel (car iswitchb-matches))) | |
f1180544 | 668 | |
ccd2f997 | 669 | ;; Or possibly choose the default buffer |
19db4308 | 670 | (if (equal iswitchb-final-text "") |
c4ae2d51 | 671 | (setq buf-sel (car iswitchb-matches))) |
36a3b01c | 672 | |
ccd2f997 | 673 | buf-sel)) |
36a3b01c | 674 | |
ccd2f997 KH |
675 | (defun iswitchb-existing-buffer-p () |
676 | "Return non-nil if there is a matching buffer." | |
677 | (not (null iswitchb-matches))) | |
962a4216 RS |
678 | |
679 | ;;; COMPLETION CODE | |
680 | ||
681 | (defun iswitchb-set-common-completion () | |
6c56c80b RS |
682 | "Find common completion of `iswitchb-text' in `iswitchb-matches'. |
683 | The result is stored in `iswitchb-common-match-string'." | |
962a4216 | 684 | |
d7396512 | 685 | (let (val) |
962a4216 RS |
686 | (setq iswitchb-common-match-string nil) |
687 | (if (and iswitchb-matches | |
6b0cc1b5 | 688 | (not iswitchb-regexp) ;; testing |
962a4216 RS |
689 | (stringp iswitchb-text) |
690 | (> (length iswitchb-text) 0)) | |
691 | (if (setq val (iswitchb-find-common-substring | |
692 | iswitchb-matches iswitchb-text)) | |
693 | (setq iswitchb-common-match-string val))) | |
181688f2 | 694 | val)) |
962a4216 RS |
695 | |
696 | (defun iswitchb-complete () | |
697 | "Try and complete the current pattern amongst the buffer names." | |
698 | (interactive) | |
699 | (let (res) | |
700 | (cond ((not iswitchb-matches) | |
c9403808 | 701 | (run-hooks 'iswitchb-cannot-complete-hook)) |
b21688f0 EZ |
702 | (iswitchb-invalid-regexp |
703 | ;; Do nothing | |
704 | ) | |
ccd2f997 | 705 | ((= 1 (length iswitchb-matches)) |
962a4216 RS |
706 | ;; only one choice, so select it. |
707 | (exit-minibuffer)) | |
f1180544 | 708 | |
962a4216 RS |
709 | (t |
710 | ;; else there could be some completions | |
6b0cc1b5 | 711 | (setq res iswitchb-common-match-string) |
962a4216 | 712 | (if (and (not (memq res '(t nil))) |
36a3b01c | 713 | (not (equal res iswitchb-text))) |
ccd2f997 | 714 | ;; found something to complete, so put it in the minibuffer. |
962a4216 | 715 | (progn |
b21688f0 EZ |
716 | (setq iswitchb-rescan nil |
717 | iswitchb-common-match-inserted t) | |
53811b42 | 718 | (delete-region (minibuffer-prompt-end) (point)) |
962a4216 RS |
719 | (insert res)) |
720 | ;; else nothing to complete | |
c9403808 | 721 | (run-hooks 'iswitchb-cannot-complete-hook) |
181688f2 | 722 | ))))) |
962a4216 RS |
723 | |
724 | ;;; TOGGLE FUNCTIONS | |
725 | ||
726 | (defun iswitchb-toggle-case () | |
19db4308 | 727 | "Toggle the value of variable `iswitchb-case'." |
962a4216 RS |
728 | (interactive) |
729 | (setq iswitchb-case (not iswitchb-case)) | |
730 | ;; ask for list to be regenerated. | |
181688f2 | 731 | (setq iswitchb-rescan t)) |
962a4216 RS |
732 | |
733 | (defun iswitchb-toggle-regexp () | |
734 | "Toggle the value of `iswitchb-regexp'." | |
735 | (interactive) | |
736 | (setq iswitchb-regexp (not iswitchb-regexp)) | |
737 | ;; ask for list to be regenerated. | |
181688f2 | 738 | (setq iswitchb-rescan t)) |
962a4216 RS |
739 | |
740 | (defun iswitchb-toggle-ignore () | |
741 | "Toggle ignoring buffers specified with `iswitchb-buffer-ignore'." | |
742 | (interactive) | |
743 | (if iswitchb-buffer-ignore | |
744 | (progn | |
745 | (setq iswitchb-buffer-ignore-orig iswitchb-buffer-ignore) | |
181688f2 | 746 | (setq iswitchb-buffer-ignore nil)) |
962a4216 | 747 | ;; else |
181688f2 | 748 | (setq iswitchb-buffer-ignore iswitchb-buffer-ignore-orig)) |
6b0cc1b5 | 749 | (iswitchb-make-buflist iswitchb-default) |
962a4216 | 750 | ;; ask for list to be regenerated. |
181688f2 | 751 | (setq iswitchb-rescan t)) |
962a4216 | 752 | |
ccd2f997 KH |
753 | (defun iswitchb-exit-minibuffer () |
754 | "Exit minibuffer, but make sure we have a match if one is needed." | |
755 | (interactive) | |
756 | (if (or (not iswitchb-require-match) | |
757 | (iswitchb-existing-buffer-p)) | |
4dddd07f SE |
758 | (progn |
759 | (setq iswitchb-exit 'usefirst) | |
760 | (throw 'exit nil)))) | |
962a4216 RS |
761 | |
762 | (defun iswitchb-select-buffer-text () | |
6c56c80b RS |
763 | "Select the buffer named by the prompt. |
764 | If no buffer exactly matching the prompt exists, maybe create a new one." | |
962a4216 RS |
765 | (interactive) |
766 | (setq iswitchb-exit 'takeprompt) | |
767 | (exit-minibuffer)) | |
768 | ||
36a3b01c | 769 | (defun iswitchb-find-file () |
19db4308 | 770 | "Drop into `find-file' from buffer switching." |
36a3b01c RS |
771 | (interactive) |
772 | (setq iswitchb-exit 'findfile) | |
773 | (exit-minibuffer)) | |
774 | ||
d7396512 | 775 | (defvar recentf-list) |
c4ae2d51 | 776 | |
19db4308 | 777 | (defun iswitchb-next-match () |
962a4216 RS |
778 | "Put first element of `iswitchb-matches' at the end of the list." |
779 | (interactive) | |
36a3b01c | 780 | (let ((next (cadr iswitchb-matches))) |
c4ae2d51 JW |
781 | (if (and (null next) iswitchb-virtual-buffers) |
782 | (setq recentf-list | |
783 | (iswitchb-chop recentf-list | |
784 | (cdr (cadr iswitchb-virtual-buffers)))) | |
785 | (setq iswitchb-buflist (iswitchb-chop iswitchb-buflist next))) | |
181688f2 | 786 | (setq iswitchb-rescan t))) |
962a4216 | 787 | |
19db4308 | 788 | (defun iswitchb-prev-match () |
962a4216 RS |
789 | "Put last element of `iswitchb-matches' at the front of the list." |
790 | (interactive) | |
36a3b01c | 791 | (let ((prev (car (last iswitchb-matches)))) |
c4ae2d51 JW |
792 | (if (and (null prev) iswitchb-virtual-buffers) |
793 | (setq recentf-list | |
794 | (iswitchb-chop recentf-list | |
795 | (cdr (car (last iswitchb-virtual-buffers))))) | |
796 | (setq iswitchb-buflist (iswitchb-chop iswitchb-buflist prev))) | |
181688f2 | 797 | (setq iswitchb-rescan t))) |
36a3b01c RS |
798 | |
799 | (defun iswitchb-chop (list elem) | |
800 | "Remove all elements before ELEM and put them at the end of LIST." | |
801 | (let ((ret nil) | |
802 | (next nil) | |
803 | (sofar nil)) | |
804 | (while (not ret) | |
805 | (setq next (car list)) | |
806 | (if (equal next elem) | |
807 | (setq ret (append list (nreverse sofar))) | |
808 | ;; else | |
809 | (progn | |
810 | (setq list (cdr list)) | |
811 | (setq sofar (cons next sofar))))) | |
812 | ret)) | |
962a4216 | 813 | |
962a4216 RS |
814 | ;;; CREATE LIST OF ALL CURRENT BUFFERS |
815 | ||
ccd2f997 | 816 | (defun iswitchb-make-buflist (default) |
6c56c80b | 817 | "Set `iswitchb-buflist' to the current list of buffers. |
36a3b01c | 818 | Currently visible buffers are put at the end of the list. |
19db4308 | 819 | The hook `iswitchb-make-buflist-hook' is run after the list has been |
36a3b01c | 820 | created to allow the user to further modify the order of the buffer names |
ccd2f997 KH |
821 | in this list. If DEFAULT is non-nil, and corresponds to an existing buffer, |
822 | it is put to the start of the list." | |
19db4308 | 823 | (setq iswitchb-buflist |
36a3b01c | 824 | (let* ((iswitchb-current-buffers (iswitchb-get-buffers-in-frames)) |
ceba0dac GM |
825 | (iswitchb-temp-buflist |
826 | (delq nil | |
827 | (mapcar | |
828 | (lambda (x) | |
829 | (let ((b-name (buffer-name x))) | |
830 | (if (not | |
831 | (or | |
832 | (iswitchb-ignore-buffername-p b-name) | |
833 | (memq b-name iswitchb-current-buffers))) | |
834 | b-name))) | |
835 | (buffer-list (and iswitchb-use-frame-buffer-list | |
836 | (selected-frame))))))) | |
837 | (setq iswitchb-temp-buflist | |
838 | (nconc iswitchb-temp-buflist iswitchb-current-buffers)) | |
962a4216 | 839 | (run-hooks 'iswitchb-make-buflist-hook) |
ceba0dac | 840 | ;; Should this be after the hooks, or should the hooks be the |
ccd2f997 KH |
841 | ;; final thing to be run? |
842 | (if default | |
843 | (progn | |
19db4308 | 844 | (setq iswitchb-temp-buflist |
02e526ad | 845 | (delete default iswitchb-temp-buflist)) |
19db4308 | 846 | (setq iswitchb-temp-buflist |
02e526ad SE |
847 | (cons default iswitchb-temp-buflist)))) |
848 | iswitchb-temp-buflist))) | |
962a4216 | 849 | |
36a3b01c | 850 | (defun iswitchb-to-end (lst) |
02e526ad | 851 | "Move the elements from LST to the end of `iswitchb-temp-buflist'." |
561ec225 SM |
852 | (dolist (elem lst) |
853 | (setq iswitchb-temp-buflist (delq elem iswitchb-temp-buflist))) | |
ceba0dac | 854 | (setq iswitchb-temp-buflist (nconc iswitchb-temp-buflist lst))) |
962a4216 | 855 | |
962a4216 | 856 | (defun iswitchb-get-buffers-in-frames (&optional current) |
962a4216 | 857 | "Return the list of buffers that are visible in the current frame. |
19db4308 | 858 | If optional argument CURRENT is given, restrict searching to the |
962a4216 RS |
859 | current frame, rather than all frames, regardless of value of |
860 | `iswitchb-all-frames'." | |
962a4216 | 861 | (let ((iswitchb-bufs-in-frame nil)) |
962a4216 | 862 | (walk-windows 'iswitchb-get-bufname nil |
19db4308 | 863 | (if current |
962a4216 RS |
864 | nil |
865 | iswitchb-all-frames)) | |
866 | iswitchb-bufs-in-frame)) | |
867 | ||
962a4216 RS |
868 | (defun iswitchb-get-bufname (win) |
869 | "Used by `iswitchb-get-buffers-in-frames' to walk through all windows." | |
ae5ac7d0 RS |
870 | (let ((buf (buffer-name (window-buffer win)))) |
871 | (if (not (member buf iswitchb-bufs-in-frame)) | |
872 | ;; Only add buf if it is not already in list. | |
873 | ;; This prevents same buf in two different windows being | |
874 | ;; put into the list twice. | |
875 | (setq iswitchb-bufs-in-frame | |
876 | (cons buf iswitchb-bufs-in-frame))))) | |
962a4216 | 877 | |
962a4216 RS |
878 | ;;; FIND MATCHING BUFFERS |
879 | ||
880 | (defun iswitchb-set-matches () | |
881 | "Set `iswitchb-matches' to the list of buffers matching prompt." | |
962a4216 RS |
882 | (if iswitchb-rescan |
883 | (setq iswitchb-matches | |
d7396512 | 884 | (let ((buflist iswitchb-buflist)) |
36a3b01c | 885 | (iswitchb-get-matched-buffers iswitchb-text iswitchb-regexp |
c4ae2d51 JW |
886 | buflist)) |
887 | iswitchb-virtual-buffers nil))) | |
36a3b01c RS |
888 | |
889 | (defun iswitchb-get-matched-buffers (regexp | |
890 | &optional string-format buffer-list) | |
6b0cc1b5 SE |
891 | "Return buffers matching REGEXP. |
892 | If STRING-FORMAT is nil, consider REGEXP as just a string. | |
6c56c80b | 893 | BUFFER-LIST can be list of buffers or list of strings." |
d7396512 | 894 | (let ((case-fold-search (iswitchb-case)) |
561ec225 SM |
895 | name ret) |
896 | (if (null string-format) (setq regexp (regexp-quote regexp))) | |
b21688f0 | 897 | (setq iswitchb-invalid-regexp nil) |
561ec225 SM |
898 | (condition-case error |
899 | (dolist (x buffer-list (nreverse ret)) | |
900 | (setq name (if (stringp x) x (buffer-name x))) | |
901 | (when (and (string-match regexp name) | |
902 | (not (iswitchb-ignore-buffername-p name))) | |
903 | (push name ret))) | |
904 | (invalid-regexp | |
905 | (setq iswitchb-invalid-regexp t) | |
906 | (cdr error))))) | |
962a4216 RS |
907 | |
908 | (defun iswitchb-ignore-buffername-p (bufname) | |
909 | "Return t if the buffer BUFNAME should be ignored." | |
910 | (let ((data (match-data)) | |
911 | (re-list iswitchb-buffer-ignore) | |
912 | ignorep | |
181688f2 | 913 | nextstr) |
962a4216 RS |
914 | (while re-list |
915 | (setq nextstr (car re-list)) | |
916 | (cond | |
917 | ((stringp nextstr) | |
918 | (if (string-match nextstr bufname) | |
919 | (progn | |
920 | (setq ignorep t) | |
921 | (setq re-list nil)))) | |
1a1dd431 | 922 | ((functionp nextstr) |
962a4216 RS |
923 | (if (funcall nextstr bufname) |
924 | (progn | |
925 | (setq ignorep t) | |
181688f2 | 926 | (setq re-list nil))))) |
962a4216 | 927 | (setq re-list (cdr re-list))) |
25c80f5c | 928 | (set-match-data data) |
962a4216 RS |
929 | |
930 | ;; return the result | |
181688f2 | 931 | ignorep)) |
962a4216 | 932 | |
962a4216 RS |
933 | (defun iswitchb-word-matching-substring (word) |
934 | "Return part of WORD before 1st match to `iswitchb-change-word-sub'. | |
935 | If `iswitchb-change-word-sub' cannot be found in WORD, return nil." | |
8097dd15 | 936 | (let ((case-fold-search (iswitchb-case))) |
962a4216 RS |
937 | (let ((m (string-match iswitchb-change-word-sub word))) |
938 | (if m | |
939 | (substring word m) | |
940 | ;; else no match | |
941 | nil)))) | |
942 | ||
962a4216 RS |
943 | (defun iswitchb-find-common-substring (lis subs) |
944 | "Return common string following SUBS in each element of LIS." | |
945 | (let (res | |
946 | alist | |
181688f2 | 947 | iswitchb-change-word-sub) |
962a4216 RS |
948 | (setq iswitchb-change-word-sub |
949 | (if iswitchb-regexp | |
950 | subs | |
951 | (regexp-quote subs))) | |
952 | (setq res (mapcar 'iswitchb-word-matching-substring lis)) | |
ccd2f997 | 953 | (setq res (delq nil res)) ;; remove any nil elements (shouldn't happen) |
962a4216 RS |
954 | (setq alist (mapcar 'iswitchb-makealist res)) ;; could use an OBARRAY |
955 | ||
956 | ;; try-completion returns t if there is an exact match. | |
8097dd15 | 957 | (let ((completion-ignore-case (iswitchb-case))) |
962a4216 | 958 | |
181688f2 | 959 | (try-completion subs alist)))) |
962a4216 RS |
960 | |
961 | (defun iswitchb-makealist (res) | |
962 | "Return dotted pair (RES . 1)." | |
963 | (cons res 1)) | |
964 | ||
965 | ;; from Wayne Mesard <wmesard@esd.sgi.com> | |
966 | (defun iswitchb-rotate-list (lis) | |
19db4308 | 967 | "Destructively remove the last element from LIS. |
962a4216 RS |
968 | Return the modified list with the last element prepended to it." |
969 | (if (<= (length lis) 1) | |
970 | lis | |
971 | (let ((las lis) | |
972 | (prev lis)) | |
973 | (while (consp (cdr las)) | |
974 | (setq prev las | |
975 | las (cdr las))) | |
976 | (setcdr prev nil) | |
181688f2 | 977 | (cons (car las) lis)))) |
962a4216 RS |
978 | |
979 | (defun iswitchb-completion-help () | |
8ae3ef6e | 980 | "Show possible completions in a *Completions* buffer." |
962a4216 | 981 | ;; we could allow this buffer to be used to select match, but I think |
36a3b01c | 982 | ;; choose-completion-string will need redefining, so it just inserts |
19db4308 | 983 | ;; choice with out any previous input. |
962a4216 | 984 | (interactive) |
36a3b01c | 985 | (setq iswitchb-rescan nil) |
8ae3ef6e SM |
986 | (let ((buf (current-buffer)) |
987 | (temp-buf "*Completions*") | |
988 | (win)) | |
ccd2f997 | 989 | |
b21688f0 EZ |
990 | (if (and (eq last-command this-command) |
991 | (not iswitchb-common-match-inserted)) | |
ccd2f997 KH |
992 | ;; scroll buffer |
993 | (progn | |
994 | (set-buffer temp-buf) | |
995 | (setq win (get-buffer-window temp-buf)) | |
996 | (if (pos-visible-in-window-p (point-max) win) | |
997 | (set-window-start win (point-min)) | |
998 | (scroll-other-window)) | |
181688f2 | 999 | (set-buffer buf)) |
f1180544 | 1000 | |
ccd2f997 | 1001 | (with-output-to-temp-buffer temp-buf |
2d839509 | 1002 | (if (featurep 'xemacs) |
f1180544 | 1003 | |
ccd2f997 KH |
1004 | ;; XEmacs extents are put on by default, doesn't seem to be |
1005 | ;; any way of switching them off. | |
d5e63715 | 1006 | (display-completion-list (or iswitchb-matches iswitchb-buflist) |
ccd2f997 | 1007 | :help-string "iswitchb " |
19db4308 | 1008 | :activate-callback |
06b60517 | 1009 | (lambda (_x _y _z) |
19db4308 | 1010 | (message "doesn't work yet, sorry!"))) |
ccd2f997 | 1011 | ;; else running Emacs |
d5e63715 | 1012 | (display-completion-list (or iswitchb-matches iswitchb-buflist)))) |
b21688f0 | 1013 | (setq iswitchb-common-match-inserted nil)))) |
ccd2f997 | 1014 | |
36a3b01c RS |
1015 | ;;; KILL CURRENT BUFFER |
1016 | ||
1017 | (defun iswitchb-kill-buffer () | |
ccd2f997 | 1018 | "Kill the buffer at the head of `iswitchb-matches'." |
36a3b01c | 1019 | (interactive) |
e0143335 LL |
1020 | (let ((enable-recursive-minibuffers t) |
1021 | buf) | |
36a3b01c RS |
1022 | |
1023 | (setq buf (car iswitchb-matches)) | |
1024 | ;; check to see if buf is non-nil. | |
1025 | (if buf | |
19677c71 LL |
1026 | (let ((bufobjs (mapcar (lambda (name) |
1027 | (or (get-buffer name) name)) | |
1028 | iswitchb-buflist))) | |
36a3b01c RS |
1029 | (kill-buffer buf) |
1030 | ||
1031 | ;; Check if buffer exists. XEmacs gnuserv.el makes alias | |
1032 | ;; for kill-buffer which does not return t if buffer is | |
1033 | ;; killed, so we can't rely on kill-buffer return value. | |
1034 | (if (get-buffer buf) | |
1035 | ;; buffer couldn't be killed. | |
19db4308 | 1036 | (setq iswitchb-rescan t) |
e0143335 LL |
1037 | ;; Else `kill-buffer' succeeds so re-make the buffer list |
1038 | ;; taking into account packages like uniquify may rename | |
19677c71 LL |
1039 | ;; buffers, and try to preserve the ordering of buffers. |
1040 | (setq iswitchb-buflist | |
1041 | (delq nil (mapcar (lambda (b) | |
1042 | (if (bufferp b) | |
1043 | (buffer-name b) | |
1044 | b)) | |
1045 | bufobjs)))))))) | |
36a3b01c | 1046 | |
962a4216 RS |
1047 | ;;; VISIT CHOSEN BUFFER |
1048 | (defun iswitchb-visit-buffer (buffer) | |
1049 | "Visit buffer named BUFFER according to `iswitchb-method'." | |
d7396512 | 1050 | (let (win newframe) |
962a4216 RS |
1051 | (cond |
1052 | ((eq iswitchb-method 'samewindow) | |
1053 | (switch-to-buffer buffer)) | |
1054 | ||
1055 | ((memq iswitchb-method '(always-frame maybe-frame)) | |
1056 | (cond | |
1057 | ((and (setq win (iswitchb-window-buffer-p buffer)) | |
1058 | (or (eq iswitchb-method 'always-frame) | |
1059 | (y-or-n-p "Jump to frame? "))) | |
1060 | (setq newframe (window-frame win)) | |
2d839509 | 1061 | (if (fboundp 'select-frame-set-input-focus) |
4d8ae757 RS |
1062 | (select-frame-set-input-focus newframe) |
1063 | (raise-frame newframe) | |
1064 | (select-frame newframe) | |
1065 | ) | |
1066 | (select-window win)) | |
962a4216 RS |
1067 | (t |
1068 | ;; No buffer in other frames... | |
1069 | (switch-to-buffer buffer) | |
1070 | ))) | |
1071 | ||
962a4216 RS |
1072 | ((eq iswitchb-method 'otherwindow) |
1073 | (switch-to-buffer-other-window buffer)) | |
1074 | ||
888472e0 RS |
1075 | ((eq iswitchb-method 'display) |
1076 | (display-buffer buffer)) | |
1077 | ||
962a4216 RS |
1078 | ((eq iswitchb-method 'otherframe) |
1079 | (progn | |
1080 | (switch-to-buffer-other-frame buffer) | |
2d839509 | 1081 | (if (fboundp 'select-frame-set-input-focus) |
4d8ae757 | 1082 | (select-frame-set-input-focus (selected-frame))) |
181688f2 | 1083 | ))))) |
962a4216 RS |
1084 | |
1085 | (defun iswitchb-possible-new-buffer (buf) | |
1086 | "Possibly create and visit a new buffer called BUF." | |
1087 | ||
1088 | (let ((newbufcreated)) | |
1089 | (if (and iswitchb-newbuffer | |
1090 | (or | |
1091 | (not iswitchb-prompt-newbuffer) | |
f1180544 | 1092 | |
962a4216 RS |
1093 | (and iswitchb-prompt-newbuffer |
1094 | (y-or-n-p | |
1095 | (format | |
1096 | "No buffer matching `%s', create one? " | |
1097 | buf))))) | |
1098 | ;; then create a new buffer | |
1099 | (progn | |
1100 | (setq newbufcreated (get-buffer-create buf)) | |
1101 | (if (fboundp 'set-buffer-major-mode) | |
1102 | (set-buffer-major-mode newbufcreated)) | |
1103 | (iswitchb-visit-buffer newbufcreated)) | |
c7015153 | 1104 | ;; else won't create new buffer |
8a26c165 | 1105 | (message "no buffer matching `%s'" buf)))) |
962a4216 RS |
1106 | |
1107 | (defun iswitchb-window-buffer-p (buffer) | |
6c56c80b RS |
1108 | "Return window pointer if BUFFER is visible in another frame. |
1109 | If BUFFER is visible in the current frame, return nil." | |
962a4216 | 1110 | (interactive) |
962a4216 | 1111 | (let ((blist (iswitchb-get-buffers-in-frames 'current))) |
6c4cab03 | 1112 | ;; If the buffer is visible in current frame, return nil |
ade1b01c | 1113 | (unless (member buffer blist) |
6c4cab03 | 1114 | ;; maybe in other frame or icon |
ccd2f997 | 1115 | (get-buffer-window buffer 0) ; better than 'visible |
962a4216 RS |
1116 | ))) |
1117 | ||
962a4216 RS |
1118 | (defun iswitchb-buffer () |
1119 | "Switch to another buffer. | |
1120 | ||
1121 | The buffer name is selected interactively by typing a substring. The | |
1122 | buffer is displayed according to `iswitchb-default-method' -- the | |
1123 | default is to show it in the same window, unless it is already visible | |
6c56c80b RS |
1124 | in another frame. |
1125 | For details of keybindings, do `\\[describe-function] iswitchb'." | |
962a4216 RS |
1126 | (interactive) |
1127 | (setq iswitchb-method iswitchb-default-method) | |
ccd2f997 | 1128 | (iswitchb)) |
962a4216 | 1129 | |
962a4216 RS |
1130 | (defun iswitchb-buffer-other-window () |
1131 | "Switch to another buffer and show it in another window. | |
1132 | The buffer name is selected interactively by typing a substring. | |
6c56c80b | 1133 | For details of keybindings, do `\\[describe-function] iswitchb'." |
962a4216 RS |
1134 | (interactive) |
1135 | (setq iswitchb-method 'otherwindow) | |
ccd2f997 | 1136 | (iswitchb)) |
962a4216 | 1137 | |
888472e0 RS |
1138 | (defun iswitchb-display-buffer () |
1139 | "Display a buffer in another window but don't select it. | |
1140 | The buffer name is selected interactively by typing a substring. | |
1141 | For details of keybindings, do `\\[describe-function] iswitchb'." | |
1142 | (interactive) | |
1143 | (setq iswitchb-method 'display) | |
ccd2f997 | 1144 | (iswitchb)) |
888472e0 | 1145 | |
962a4216 RS |
1146 | (defun iswitchb-buffer-other-frame () |
1147 | "Switch to another buffer and show it in another frame. | |
1148 | The buffer name is selected interactively by typing a substring. | |
6c56c80b | 1149 | For details of keybindings, do `\\[describe-function] iswitchb'." |
962a4216 RS |
1150 | (interactive) |
1151 | (setq iswitchb-method 'otherframe) | |
962a4216 RS |
1152 | (iswitchb)) |
1153 | ||
36a3b01c | 1154 | ;;; XEmacs hack for showing default buffer |
962a4216 RS |
1155 | |
1156 | ;; The first time we enter the minibuffer, Emacs puts up the default | |
ccd2f997 | 1157 | ;; buffer to switch to, but XEmacs doesn't -- presumably there is a |
36a3b01c RS |
1158 | ;; subtle difference in the two versions of post-command-hook. The |
1159 | ;; default is shown for both whenever we delete all of our text | |
1160 | ;; though, indicating its just a problem the first time we enter the | |
1161 | ;; function. To solve this, we use another entry hook for emacs to | |
1162 | ;; show the default the first time we enter the minibuffer. | |
962a4216 | 1163 | |
6b0cc1b5 | 1164 | (defun iswitchb-init-XEmacs-trick () |
6c56c80b RS |
1165 | "Display default buffer when first entering minibuffer. |
1166 | This is a hack for XEmacs, and should really be handled by `iswitchb-exhibit'." | |
962a4216 RS |
1167 | (if (iswitchb-entryfn-p) |
1168 | (progn | |
36a3b01c | 1169 | (iswitchb-exhibit) |
962a4216 RS |
1170 | (goto-char (point-min))))) |
1171 | ||
36a3b01c | 1172 | ;; add this hook for XEmacs only. |
2d839509 | 1173 | (if (featurep 'xemacs) |
19db4308 | 1174 | (add-hook 'iswitchb-minibuffer-setup-hook |
6b0cc1b5 | 1175 | 'iswitchb-init-XEmacs-trick)) |
962a4216 | 1176 | |
36a3b01c | 1177 | ;;; XEmacs / backspace key |
ccd2f997 | 1178 | ;; For some reason, if the backspace key is pressed in XEmacs, the |
962a4216 | 1179 | ;; line gets confused, so I've added a simple key definition to make |
19db4308 | 1180 | ;; backspace act like the normal delete key. |
962a4216 RS |
1181 | |
1182 | (defun iswitchb-xemacs-backspacekey () | |
1183 | "Bind backspace to `backward-delete-char'." | |
1184 | (define-key iswitchb-mode-map '[backspace] 'backward-delete-char) | |
181688f2 | 1185 | (define-key iswitchb-mode-map '[(meta backspace)] 'backward-kill-word)) |
962a4216 | 1186 | |
2d839509 | 1187 | (if (featurep 'xemacs) |
19db4308 | 1188 | (add-hook 'iswitchb-define-mode-map-hook |
962a4216 RS |
1189 | 'iswitchb-xemacs-backspacekey)) |
1190 | ||
962a4216 RS |
1191 | ;;; ICOMPLETE TYPE CODE |
1192 | ||
1193 | (defun iswitchb-exhibit () | |
6c56c80b | 1194 | "Find matching buffers and display a list in the minibuffer. |
962a4216 RS |
1195 | Copied from `icomplete-exhibit' with two changes: |
1196 | 1. It prints a default buffer name when there is no text yet entered. | |
1197 | 2. It calls my completion routine rather than the standard completion." | |
962a4216 | 1198 | (if iswitchb-use-mycompletion |
600f9d03 | 1199 | (let ((contents (buffer-substring (minibuffer-prompt-end) (point-max))) |
962a4216 RS |
1200 | (buffer-undo-list t)) |
1201 | (save-excursion | |
1202 | (goto-char (point-max)) | |
1203 | ; Register the end of input, so we | |
1204 | ; know where the extra stuff | |
1205 | ; (match-status info) begins: | |
1206 | (if (not (boundp 'iswitchb-eoinput)) | |
1207 | ;; In case it got wiped out by major mode business: | |
1208 | (make-local-variable 'iswitchb-eoinput)) | |
1209 | (setq iswitchb-eoinput (point)) | |
1210 | ;; Update the list of matches | |
1211 | (setq iswitchb-text contents) | |
1212 | (iswitchb-set-matches) | |
1213 | (setq iswitchb-rescan t) | |
1214 | (iswitchb-set-common-completion) | |
1215 | ||
1216 | ;; Insert the match-status information: | |
f1180544 | 1217 | (insert (iswitchb-completions |
b21688f0 | 1218 | contents)))))) |
26119624 | 1219 | |
d7396512 JB |
1220 | (defvar most-len) |
1221 | (defvar most-is-exact) | |
c4ae2d51 | 1222 | |
c80d9534 JW |
1223 | (defun iswitchb-output-completion (com) |
1224 | (if (= (length com) most-len) | |
1225 | ;; Most is one exact match, | |
1226 | ;; note that and leave out | |
1227 | ;; for later indication: | |
1228 | (ignore | |
1229 | (setq most-is-exact t)) | |
1230 | (substring com most-len))) | |
1231 | ||
b21688f0 | 1232 | (defun iswitchb-completions (name) |
962a4216 RS |
1233 | "Return the string that is displayed after the user's text. |
1234 | Modified from `icomplete-completions'." | |
f1180544 | 1235 | |
962a4216 RS |
1236 | (let ((comps iswitchb-matches) |
1237 | ; "-determined" - only one candidate | |
b21688f0 EZ |
1238 | (open-bracket-determined "[") |
1239 | (close-bracket-determined "]") | |
962a4216 RS |
1240 | ;"-prospects" - more than one candidate |
1241 | (open-bracket-prospects "{") | |
1242 | (close-bracket-prospects "}") | |
181688f2 | 1243 | first) |
962a4216 | 1244 | |
b21688f0 | 1245 | (if (and iswitchb-use-faces comps) |
962a4216 RS |
1246 | (progn |
1247 | (setq first (car comps)) | |
1248 | (setq first (format "%s" first)) | |
1249 | (put-text-property 0 (length first) 'face | |
19db4308 | 1250 | (if (= (length comps) 1) |
b21688f0 | 1251 | (if iswitchb-invalid-regexp |
54907cdc KS |
1252 | 'iswitchb-invalid-regexp |
1253 | 'iswitchb-single-match) | |
1254 | 'iswitchb-current-match) | |
19db4308 | 1255 | first) |
181688f2 | 1256 | (setq comps (cons first (cdr comps))))) |
962a4216 | 1257 | |
c4ae2d51 JW |
1258 | ;; If no buffers matched, and virtual buffers are being used, then |
1259 | ;; consult the list of past visited files, to see if we can find | |
1260 | ;; the file which the user might thought was still open. | |
1261 | (when (and iswitchb-use-virtual-buffers (null comps) | |
e6d23bb5 | 1262 | recentf-list) |
c4ae2d51 JW |
1263 | (setq iswitchb-virtual-buffers nil) |
1264 | (let ((head recentf-list) name) | |
1265 | (while head | |
1266 | (if (and (setq name (file-name-nondirectory (car head))) | |
1267 | (string-match (if iswitchb-regexp | |
1268 | iswitchb-text | |
1269 | (regexp-quote iswitchb-text)) name) | |
1270 | (null (get-file-buffer (car head))) | |
1271 | (not (assoc name iswitchb-virtual-buffers)) | |
1272 | (not (iswitchb-ignore-buffername-p name)) | |
1273 | (file-exists-p (car head))) | |
1274 | (setq iswitchb-virtual-buffers | |
1275 | (cons (cons name (car head)) | |
1276 | iswitchb-virtual-buffers))) | |
e6d23bb5 CY |
1277 | (setq head (cdr head))) |
1278 | (setq iswitchb-virtual-buffers (nreverse iswitchb-virtual-buffers) | |
1279 | comps (mapcar 'car iswitchb-virtual-buffers)) | |
c4ae2d51 JW |
1280 | (let ((comp comps)) |
1281 | (while comp | |
1282 | (put-text-property 0 (length (car comp)) | |
54907cdc | 1283 | 'face 'iswitchb-virtual-matches |
c4ae2d51 | 1284 | (car comp)) |
e6d23bb5 | 1285 | (setq comp (cdr comp)))))) |
c4ae2d51 | 1286 | |
962a4216 RS |
1287 | (cond ((null comps) (format " %sNo match%s" |
1288 | open-bracket-determined | |
1289 | close-bracket-determined)) | |
1290 | ||
b21688f0 EZ |
1291 | (iswitchb-invalid-regexp |
1292 | (concat " " (car comps))) | |
1293 | ((null (cdr comps)) ;one match | |
1294 | (concat | |
1295 | (if (if (not iswitchb-regexp) | |
1296 | (= (length name) | |
1297 | (length (car comps))) | |
1298 | (string-match name (car comps)) | |
1299 | (string-equal (match-string 0 (car comps)) | |
1300 | (car comps))) | |
1301 | "" | |
1302 | (concat open-bracket-determined | |
19db4308 | 1303 | ;; when there is one match, show the |
962a4216 RS |
1304 | ;; matching buffer name in full |
1305 | (car comps) | |
b21688f0 EZ |
1306 | close-bracket-determined)) |
1307 | (if (not iswitchb-use-faces) " [Matched]"))) | |
962a4216 | 1308 | (t ;multiple matches |
c80d9534 JW |
1309 | (if (and iswitchb-max-to-show |
1310 | (> (length comps) iswitchb-max-to-show)) | |
1311 | (setq comps | |
1312 | (append | |
5f5d410a JW |
1313 | (let ((res nil) |
1314 | (comp comps) | |
1315 | (end (/ iswitchb-max-to-show 2))) | |
1316 | (while (>= (setq end (1- end)) 0) | |
1317 | (setq res (cons (car comp) res) | |
1318 | comp (cdr comp))) | |
1319 | (nreverse res)) | |
c80d9534 | 1320 | (list "...") |
5f5d410a JW |
1321 | (nthcdr (- (length comps) |
1322 | (/ iswitchb-max-to-show 2)) comps)))) | |
962a4216 RS |
1323 | (let* ( |
1324 | ;;(most (try-completion name candidates predicate)) | |
1325 | (most nil) | |
1326 | (most-len (length most)) | |
1327 | most-is-exact | |
c4ae2d51 JW |
1328 | (alternatives |
1329 | (mapconcat (if most 'iswitchb-output-completion | |
6a0e4c60 | 1330 | 'identity) comps iswitchb-delim))) |
962a4216 RS |
1331 | |
1332 | (concat | |
1333 | ||
1334 | ;; put in common completion item -- what you get by | |
1335 | ;; pressing tab | |
4e141ed7 SE |
1336 | (if (and (stringp iswitchb-common-match-string) |
1337 | (> (length iswitchb-common-match-string) (length name))) | |
962a4216 | 1338 | (concat open-bracket-determined |
19db4308 | 1339 | (substring iswitchb-common-match-string |
962a4216 | 1340 | (length name)) |
181688f2 | 1341 | close-bracket-determined)) |
962a4216 RS |
1342 | ;; end of partial matches... |
1343 | ||
1344 | ;; think this bit can be ignored. | |
1345 | (and (> most-len (length name)) | |
1346 | (concat open-bracket-determined | |
1347 | (substring most (length name)) | |
1348 | close-bracket-determined)) | |
f1180544 | 1349 | |
962a4216 RS |
1350 | ;; list all alternatives |
1351 | open-bracket-prospects | |
1352 | (if most-is-exact | |
6a0e4c60 | 1353 | (concat iswitchb-delim alternatives) |
962a4216 | 1354 | alternatives) |
181688f2 | 1355 | close-bracket-prospects)))))) |
962a4216 RS |
1356 | |
1357 | (defun iswitchb-minibuffer-setup () | |
6c56c80b RS |
1358 | "Set up minibuffer for `iswitchb-buffer'. |
1359 | Copied from `icomplete-minibuffer-setup-hook'." | |
8ae3ef6e SM |
1360 | (when (iswitchb-entryfn-p) |
1361 | (set (make-local-variable 'iswitchb-use-mycompletion) t) | |
1362 | (add-hook 'pre-command-hook 'iswitchb-pre-command nil t) | |
1363 | (add-hook 'post-command-hook 'iswitchb-post-command nil t) | |
1364 | (run-hooks 'iswitchb-minibuffer-setup-hook))) | |
962a4216 RS |
1365 | |
1366 | (defun iswitchb-pre-command () | |
6c56c80b | 1367 | "Run before command in `iswitchb-buffer'." |
962a4216 RS |
1368 | (iswitchb-tidy)) |
1369 | ||
962a4216 | 1370 | (defun iswitchb-post-command () |
6c56c80b | 1371 | "Run after command in `iswitchb-buffer'." |
181688f2 | 1372 | (iswitchb-exhibit)) |
962a4216 RS |
1373 | |
1374 | (defun iswitchb-tidy () | |
1375 | "Remove completions display, if any, prior to new user input. | |
1376 | Copied from `icomplete-tidy'." | |
1377 | ||
1378 | (if (and (boundp 'iswitchb-eoinput) | |
1379 | iswitchb-eoinput) | |
f1180544 | 1380 | |
962a4216 RS |
1381 | (if (> iswitchb-eoinput (point-max)) |
1382 | ;; Oops, got rug pulled out from under us - reinit: | |
1383 | (setq iswitchb-eoinput (point-max)) | |
1384 | (let ((buffer-undo-list buffer-undo-list )) ; prevent entry | |
1385 | (delete-region iswitchb-eoinput (point-max)))) | |
f1180544 | 1386 | |
962a4216 RS |
1387 | ;; Reestablish the local variable 'cause minibuffer-setup is weird: |
1388 | (make-local-variable 'iswitchb-eoinput) | |
1389 | (setq iswitchb-eoinput 1))) | |
1390 | ||
962a4216 | 1391 | (defun iswitchb-entryfn-p () |
26119624 | 1392 | "Return non-nil if we are using `iswitchb-buffer'." |
c7b89861 | 1393 | (eq iswitchb-minibuf-depth (minibuffer-depth))) |
ccd2f997 | 1394 | |
962a4216 | 1395 | (defun iswitchb-summaries-to-end () |
6c56c80b RS |
1396 | "Move the summaries to the end of the list. |
1397 | This is an example function which can be hooked on to | |
1398 | `iswitchb-make-buflist-hook'. Any buffer matching the regexps | |
1399 | `Summary' or `output\*$'are put to the end of the list." | |
19db4308 DL |
1400 | (let ((summaries (delq nil |
1401 | (mapcar | |
1402 | (lambda (x) | |
1403 | (if (string-match "Summary\\|output\\*$" x) | |
1404 | x)) | |
1405 | iswitchb-temp-buflist)))) | |
36a3b01c | 1406 | (iswitchb-to-end summaries))) |
962a4216 | 1407 | |
8097dd15 | 1408 | (defun iswitchb-case () |
4837b516 | 1409 | "Return non-nil if we should ignore case when matching. |
8097dd15 GM |
1410 | See the variable `iswitchb-case' for details." |
1411 | (if iswitchb-case | |
2d839509 | 1412 | (if (featurep 'xemacs) |
8097dd15 GM |
1413 | (isearch-no-upper-case-p iswitchb-text) |
1414 | (isearch-no-upper-case-p iswitchb-text t)))) | |
1415 | ||
19db4308 | 1416 | ;;;###autoload |
8ae3ef6e | 1417 | (define-minor-mode iswitchb-mode |
06e21633 CY |
1418 | "Toggle Iswitchb mode. |
1419 | With a prefix argument ARG, enable Iswitchb mode if ARG is | |
1420 | positive, and disable it otherwise. If called from Lisp, enable | |
1421 | the mode if ARG is omitted or nil. | |
1422 | ||
1423 | Iswitchb mode is a global minor mode that enables switching | |
1424 | between buffers using substrings. See `iswitchb' for details." | |
8ae3ef6e | 1425 | nil nil iswitchb-global-map :global t :group 'iswitchb |
19db4308 DL |
1426 | (if iswitchb-mode |
1427 | (add-hook 'minibuffer-setup-hook 'iswitchb-minibuffer-setup) | |
8ae3ef6e | 1428 | (remove-hook 'minibuffer-setup-hook 'iswitchb-minibuffer-setup))) |
19db4308 | 1429 | |
962a4216 RS |
1430 | (provide 'iswitchb) |
1431 | ||
6c56c80b | 1432 | ;;; iswitchb.el ends here |