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7313ccdb | 1 | ;;; dabbrev.el --- dynamic abbreviation package |
b578f267 | 2 | |
8b64df46 | 3 | ;; Copyright (C) 1985, 86, 92, 94, 96, 1997 Free Software Foundation, Inc. |
2f790b20 | 4 | |
6163b3ba RS |
5 | ;; Author: Don Morrison |
6 | ;; Maintainer: Lars Lindberg <Lars.Lindberg@sypro.cap.se> | |
7 | ;; Created: 16 Mars 1992 | |
df6eb420 | 8 | ;; Lindberg's last update version: 5.7 |
f5f727f8 | 9 | ;; Keywords: abbrev expand completion convenience |
3a801d0c | 10 | |
b578f267 EN |
11 | ;; This file is part of GNU Emacs. |
12 | ||
13 | ;; GNU Emacs is free software; you can redistribute it and/or modify | |
2f790b20 | 14 | ;; it under the terms of the GNU General Public License as published by |
b578f267 EN |
15 | ;; the Free Software Foundation; either version 2, or (at your option) |
16 | ;; any later version. | |
17 | ||
18 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
2f790b20 JB |
19 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of |
20 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
21 | ;; GNU General Public License for more details. | |
b578f267 | 22 | |
2f790b20 | 23 | ;; You should have received a copy of the GNU General Public License |
b578f267 EN |
24 | ;; along with GNU Emacs; see the file COPYING. If not, write to the |
25 | ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
26 | ;; Boston, MA 02111-1307, USA. | |
2f790b20 | 27 | |
e5167999 | 28 | ;;; Commentary: |
2f790b20 | 29 | |
6163b3ba RS |
30 | ;; The purpose with this package is to let you write just a few |
31 | ;; characters of words you've written earlier to be able to expand | |
32 | ;; them. | |
33 | ;; | |
34 | ;; To expand a word, just put the point right after the word and press | |
35 | ;; M-/ (dabbrev-expand) or M-C-/ (dabbrev-completion). | |
36 | ;; | |
6163b3ba RS |
37 | ;; Check out the customizable variables below to learn about all the |
38 | ;; features of this package. | |
39 | ||
40 | ;;; Hints and tips for major modes writers: | |
41 | ||
42 | ;; Recommended values C/Lisp etc text | |
43 | ;; dabbrev-case-fold-search nil t | |
44 | ;; dabbrev-case-replace nil t | |
45 | ;; | |
46 | ;; Set the variables you want special for your mode like this: | |
47 | ;; (set (make-local-variable 'dabbrev-case-replace) nil) | |
a7acbbe4 | 48 | ;; Then you don't interfere with other modes. |
6163b3ba RS |
49 | ;; |
50 | ;; If your mode handles buffers that refers to other buffers | |
51 | ;; (i.e. compilation-mode, gud-mode), then try to set | |
52 | ;; `dabbrev-select-buffers-function' or `dabbrev-friend-buffer-function' | |
53 | ;; to a function that point out those buffers. | |
54 | ||
55 | ;; Same goes for major-modes that are connected to other modes. There | |
56 | ;; are for instance a number of mail-modes. One for reading, one for | |
57 | ;; creating a new mail etc. Maybe those should be connected. | |
58 | ||
59 | ;; Example for GNUS (when we write a reply, we want dabbrev to look in | |
60 | ;; the article for expansion): | |
61 | ;; (set (make-local-variable 'dabbrev-friend-buffer-function) | |
62 | ;; (lambda (buffer) | |
63 | ;; (save-excursion | |
64 | ;; (set-buffer buffer) | |
65 | ;; (memq major-mode '(news-reply-mode gnus-article-mode))))) | |
66 | ||
6163b3ba RS |
67 | |
68 | ;; Known bugs and limitations. | |
69 | ;; - Possible to do several levels of `dabbrev-completion' in the | |
70 | ;; minibuffer. | |
71 | ;; - dabbrev-completion doesn't handle resetting the globals variables | |
72 | ;; right. It resets them after finding the abbrev. | |
73 | ||
74 | ;; Future enhancements | |
75 | ;; - Check the tags-files? Like tags-complete? | |
76 | ;; - Add the possibility of searching both forward and backward to | |
77 | ;; the nearest expansion. | |
7313ccdb RS |
78 | ;; - Check the kill-ring when everything else fails. (Maybe something |
79 | ;; for hippie-expand?). [Bng] <boris@cs.rochester.edu> | |
6163b3ba | 80 | |
df6eb420 | 81 | ;;; These people gave suggestions: |
6163b3ba RS |
82 | ;; [hymie] Hyman Rosen <marks!hymie@jyacc.jyacc.com> |
83 | ;; [burgett] Steve Burgett <burgett@bizet.eecs.berkeley.edu> | |
84 | ;; [jules] Julian Gosnell <jules@x.co.uk> | |
85 | ;; [kifer] Michael Kifer <kifer@sbcs.sunysb.edu> | |
86 | ;; [ake] Ake Stenhoff <extaksf@aom.ericsson.se> | |
87 | ;; [alon] Alon Albert <al%imercury@uunet.uu.net> | |
88 | ;; [tromey] Tom Tromey <tromey@busco.lanl.gov> | |
89 | ;; [Rolf] Rolf Schreiber <rolf@mathematik.uni-stuttgart.de> | |
90 | ;; [Petri] Petri Raitio <per@tekla.fi> | |
7bd9ba70 | 91 | ;; [ejb] Jay Berkenbilt <ejb@ql.org> |
6163b3ba RS |
92 | ;; [hawley] Bob Hawley <rth1@quartet.mt.att.com> |
93 | ;; ... and to all the people who have participated in the beta tests. | |
2f790b20 | 94 | |
e5167999 | 95 | ;;; Code: |
6163b3ba | 96 | |
b578f267 EN |
97 | ;;---------------------------------------------------------------- |
98 | ;; Customization variables | |
99 | ;;---------------------------------------------------------------- | |
6163b3ba | 100 | |
bbf5eb28 RS |
101 | (defgroup dabbrev nil |
102 | "Dynamic Abbreviations" | |
103 | :tag "Dynamic Abbreviations" | |
f5f727f8 DN |
104 | :group 'abbrev |
105 | :group 'convenience) | |
6163b3ba | 106 | |
bbf5eb28 RS |
107 | (defcustom dabbrev-backward-only nil |
108 | "*If non-nil, `dabbrev-expand' only looks backwards." | |
109 | :type 'boolean | |
110 | :group 'dabbrev) | |
111 | ||
112 | (defcustom dabbrev-limit nil | |
113 | "*Limits region searched by `dabbrev-expand' to this many chars away." | |
114 | :type '(choice (const :tag "off" nil) | |
115 | integer) | |
116 | :group 'dabbrev) | |
117 | ||
118 | (defcustom dabbrev-abbrev-skip-leading-regexp nil | |
6163b3ba RS |
119 | "*Regexp for skipping leading characters of an abbreviation. |
120 | ||
7313ccdb RS |
121 | Example: Set this to \"\\\\$\" for programming languages |
122 | in which variable names may appear with or without a leading `$'. | |
79bb4872 | 123 | \(For example, in Makefiles.\) |
6163b3ba | 124 | |
bbf5eb28 RS |
125 | Set this to nil if no characters should be skipped." |
126 | :type '(choice regexp | |
127 | (const :tag "off" nil)) | |
128 | :group 'dabbrev) | |
6163b3ba | 129 | |
bbf5eb28 | 130 | (defcustom dabbrev-case-fold-search 'case-fold-search |
543abb4a | 131 | "*Control whether dabbrev searches should ignore case. |
7313ccdb | 132 | A value of nil means case is significant. |
543abb4a RS |
133 | A value of `case-fold-search' means case is significant |
134 | if `case-fold-search' is nil. | |
135 | Any other non-nil version means case is not significant." | |
136 | :type '(choice (const :tag "off" nil) | |
137 | (const :tag "on" t) | |
fec1279b | 138 | (const :tag "like search" case-fold-search)) |
bbf5eb28 | 139 | :group 'dabbrev) |
6163b3ba | 140 | |
bbf5eb28 | 141 | (defcustom dabbrev-upcase-means-case-search nil |
6163b3ba | 142 | "*The significance of an uppercase character in an abbreviation. |
7313ccdb | 143 | nil means case fold search, non-nil means case sensitive search. |
6163b3ba | 144 | |
7313ccdb | 145 | This variable has an effect only when the value of |
543abb4a | 146 | `dabbrev-case-fold-search' says to ignore case." |
bbf5eb28 RS |
147 | :type 'boolean |
148 | :group 'dabbrev) | |
6163b3ba | 149 | |
bbf5eb28 | 150 | (defcustom dabbrev-case-replace 'case-replace |
543abb4a RS |
151 | "*Controls whether dabbrev preserves case when expanding the abbreviation. |
152 | A value of nil means preserve case. | |
153 | A value of `case-replace' means preserve case if `case-replace' is nil. | |
154 | Any other non-nil version means do not preserve case. | |
6163b3ba | 155 | |
7313ccdb | 156 | This variable has an effect only when the value of |
543abb4a RS |
157 | `dabbrev-case-fold-search' specifies to ignore case." |
158 | :type '(choice (const :tag "off" nil) | |
159 | (const :tag "on" t) | |
fec1279b | 160 | (const :tag "like M-x query-replace" case-replace)) |
bbf5eb28 | 161 | :group 'dabbrev) |
6163b3ba | 162 | |
bbf5eb28 | 163 | (defcustom dabbrev-abbrev-char-regexp nil |
7313ccdb RS |
164 | "*Regexp to recognize a character in an abbreviation or expansion. |
165 | This regexp will be surrounded with \\\\( ... \\\\) when actually used. | |
6163b3ba | 166 | |
7313ccdb | 167 | Set this variable to \"\\\\sw\" if you want ordinary words or |
df6eb420 RS |
168 | \"\\\\sw\\\\|\\\\s_\" if you want symbols (including characters whose |
169 | syntax is \"symbol\" as well as those whose syntax is \"word\". | |
6163b3ba | 170 | |
df6eb420 RS |
171 | The value nil has a special meaning: the abbreviation is from point to |
172 | previous word-start, but the search is for symbols. | |
6163b3ba | 173 | |
7313ccdb | 174 | For instance, if you are programming in Lisp, `yes-or-no-p' is a symbol, |
df6eb420 RS |
175 | while `yes', `or', `no' and `p' are considered words. If this |
176 | variable is nil, then expanding `yes-or-no-' looks for a symbol | |
7313ccdb RS |
177 | starting with or containing `no-'. If you set this variable to |
178 | \"\\\\sw\\\\|\\\\s_\", that expansion looks for a symbol starting with | |
179 | `yes-or-no-'. Finally, if you set this variable to \"\\\\sw\", then | |
180 | expanding `yes-or-no-' signals an error because `-' is not part of a word; | |
181 | but expanding `yes-or-no' looks for a word starting with `no'. | |
6163b3ba | 182 | |
bbf5eb28 RS |
183 | The recommended value is \"\\\\sw\\\\|\\\\s_\"." |
184 | :type '(choice (const nil) | |
185 | regexp) | |
186 | :group 'dabbrev) | |
6163b3ba | 187 | |
bbf5eb28 | 188 | (defcustom dabbrev-check-all-buffers t |
df6eb420 | 189 | "*Non-nil means dabbrev package should search *all* buffers. |
6163b3ba | 190 | |
df6eb420 RS |
191 | Dabbrev always searches the current buffer first. Then, if |
192 | `dabbrev-check-other-buffers' says so, it searches the buffers | |
193 | designated by `dabbrev-select-buffers-function'. | |
6163b3ba | 194 | |
df6eb420 | 195 | Then, if `dabbrev-check-all-buffers' is non-nil, dabbrev searches |
7bd9ba70 | 196 | all the other buffers, except those named in `dabbrev-ignored-buffer-names'." |
bbf5eb28 RS |
197 | :type 'boolean |
198 | :group 'dabbrev) | |
df6eb420 | 199 | |
7bd9ba70 RS |
200 | (defcustom dabbrev-ignored-buffer-names '("*Messages") |
201 | "*List of buffer names that dabbrev should not check." | |
202 | :type '(repeat (string :tag "Buffer name")) | |
cd32a7ba DN |
203 | :group 'dabbrev |
204 | :version "20.3") | |
7bd9ba70 | 205 | |
bbf5eb28 | 206 | (defcustom dabbrev-check-other-buffers t |
6163b3ba | 207 | "*Should \\[dabbrev-expand] look in other buffers?\ |
6163b3ba | 208 | |
df6eb420 RS |
209 | nil: Don't look in other buffers. |
210 | t: Also look for expansions in the buffers pointed out by | |
211 | `dabbrev-select-buffers-function'. | |
212 | Anything else: When we can't find any more expansions in | |
213 | the current buffer, then ask the user whether to look in other | |
214 | buffers too. | |
215 | ||
bbf5eb28 RS |
216 | The default value is t." |
217 | :type '(choice (const :tag "off" nil) | |
218 | (const :tag "on" t) | |
219 | (const :tag "ask" other)) | |
220 | :group 'dabbrev) | |
6163b3ba RS |
221 | |
222 | ;; I guess setting this to a function that selects all C- or C++- | |
223 | ;; mode buffers would be a good choice for a debugging buffer, | |
224 | ;; when debugging C- or C++-code. | |
225 | (defvar dabbrev-select-buffers-function 'dabbrev--select-buffers | |
226 | "A function that selects buffers that should be searched by dabbrev. | |
6163b3ba RS |
227 | The function should take no arguments and return a list of buffers to |
228 | search for expansions. Have a look at `dabbrev--select-buffers' for | |
229 | an example. | |
230 | ||
231 | A mode setting this variable should make it buffer local.") | |
232 | ||
bbf5eb28 | 233 | (defcustom dabbrev-friend-buffer-function 'dabbrev--same-major-mode-p |
df6eb420 | 234 | "*A function to decide whether dabbrev should search OTHER-BUFFER. |
6163b3ba RS |
235 | The function should take one argument, OTHER-BUFFER, and return |
236 | non-nil if that buffer should be searched. Have a look at | |
237 | `dabbrev--same-major-mode-p' for an example. | |
238 | ||
7313ccdb RS |
239 | The value of `dabbrev-friend-buffer-function' has an effect only if |
240 | the value of `dabbrev-select-buffers-function' uses it. The function | |
241 | `dabbrev--select-buffers' is one function you can use here. | |
6163b3ba | 242 | |
bbf5eb28 RS |
243 | A mode setting this variable should make it buffer local." |
244 | :type 'function | |
245 | :group 'dabbrev) | |
6163b3ba | 246 | |
bbf5eb28 | 247 | (defcustom dabbrev-search-these-buffers-only nil |
7313ccdb RS |
248 | "If non-nil, a list of buffers which dabbrev should search. |
249 | If this variable is non-nil, dabbrev will only look in these buffers. | |
250 | It will not even look in the current buffer if it is not a member of | |
251 | this list.") | |
e5167999 | 252 | |
b578f267 EN |
253 | ;;---------------------------------------------------------------- |
254 | ;; Internal variables | |
255 | ;;---------------------------------------------------------------- | |
2f790b20 | 256 | |
6163b3ba RS |
257 | ;; Last obarray of completions in `dabbrev-completion' |
258 | (defvar dabbrev--last-obarray nil) | |
2f790b20 | 259 | |
6163b3ba RS |
260 | ;; Table of expansions seen so far |
261 | (defvar dabbrev--last-table nil) | |
2f790b20 | 262 | |
6163b3ba RS |
263 | ;; Last string we tried to expand. |
264 | (defvar dabbrev--last-abbreviation nil) | |
2f790b20 | 265 | |
6163b3ba RS |
266 | ;; Location last abbreviation began |
267 | (defvar dabbrev--last-abbrev-location nil) | |
2f790b20 | 268 | |
6163b3ba RS |
269 | ;; Direction of last dabbrevs search |
270 | (defvar dabbrev--last-direction 0) | |
2f790b20 | 271 | |
6163b3ba RS |
272 | ;; Last expansion of an abbreviation. |
273 | (defvar dabbrev--last-expansion nil) | |
2f790b20 | 274 | |
6163b3ba RS |
275 | ;; Location the last expansion was found. |
276 | (defvar dabbrev--last-expansion-location nil) | |
277 | ||
278 | ;; The list of remaining buffers with the same mode as current buffer. | |
279 | (defvar dabbrev--friend-buffer-list nil) | |
280 | ||
281 | ;; The buffer we looked in last. | |
282 | (defvar dabbrev--last-buffer nil) | |
283 | ||
284 | ;; The buffer we found the expansion last time. | |
285 | (defvar dabbrev--last-buffer-found nil) | |
286 | ||
287 | ;; The buffer we last did a completion in. | |
288 | (defvar dabbrev--last-completion-buffer nil) | |
289 | ||
dea5efcb RS |
290 | ;; Non-nil means we should upcase |
291 | ;; when copying successive words. | |
292 | (defvar dabbrev--last-case-pattern nil) | |
293 | ||
df6eb420 RS |
294 | ;; Same as dabbrev-check-other-buffers, but is set for every expand. |
295 | (defvar dabbrev--check-other-buffers dabbrev-check-other-buffers) | |
6163b3ba RS |
296 | |
297 | ;; The regexp for recognizing a character in an abbreviation. | |
298 | (defvar dabbrev--abbrev-char-regexp nil) | |
299 | ||
b578f267 EN |
300 | ;;---------------------------------------------------------------- |
301 | ;; Macros | |
302 | ;;---------------------------------------------------------------- | |
6163b3ba RS |
303 | |
304 | ;;; Get the buffer that mini-buffer was activated from | |
305 | (defsubst dabbrev--minibuffer-origin () | |
306 | (car (cdr (buffer-list)))) | |
307 | ||
7313ccdb RS |
308 | ;; Make a list of some of the elements of LIST. |
309 | ;; Check each element of LIST, storing it temporarily in the | |
310 | ;; variable ELEMENT, and include it in the result | |
311 | ;; if CONDITION evaluates non-nil. | |
312 | (defmacro dabbrev-filter-elements (element list condition) | |
313 | (` (let (dabbrev-result dabbrev-tail (, element)) | |
314 | (setq dabbrev-tail (, list)) | |
315 | (while dabbrev-tail | |
316 | (setq (, element) (car dabbrev-tail)) | |
317 | (if (, condition) | |
318 | (setq dabbrev-result (cons (, element) dabbrev-result))) | |
319 | (setq dabbrev-tail (cdr dabbrev-tail))) | |
320 | (nreverse dabbrev-result)))) | |
321 | ||
b578f267 EN |
322 | ;;---------------------------------------------------------------- |
323 | ;; Exported functions | |
324 | ;;---------------------------------------------------------------- | |
6163b3ba RS |
325 | |
326 | ;;;###autoload | |
327 | (define-key esc-map "/" 'dabbrev-expand) | |
7313ccdb | 328 | ;;;??? Do we want this? |
6163b3ba | 329 | ;;;###autoload |
f8b581fa | 330 | (define-key esc-map [?\C-/] 'dabbrev-completion) |
6163b3ba RS |
331 | |
332 | ;;;###autoload | |
333 | (defun dabbrev-completion (&optional arg) | |
334 | "Completion on current word. | |
6163b3ba RS |
335 | Like \\[dabbrev-expand] but finds all expansions in the current buffer |
336 | and presents suggestions for completion. | |
337 | ||
7313ccdb RS |
338 | With a prefix argument, it searches all buffers accepted by the |
339 | function pointed out by `dabbrev-friend-buffer-function' to find the | |
dd1ae355 RS |
340 | completions. |
341 | ||
342 | If the prefix argument is 16 (which comes from C-u C-u), | |
343 | then it searches *all* buffers. | |
6163b3ba | 344 | |
7313ccdb RS |
345 | With no prefix argument, it reuses an old completion list |
346 | if there is a suitable one already." | |
6163b3ba RS |
347 | |
348 | (interactive "*P") | |
df6eb420 RS |
349 | (dabbrev--reset-global-variables) |
350 | (let* ((dabbrev-check-other-buffers (and arg t)) | |
351 | (dabbrev-check-all-buffers | |
dd1ae355 | 352 | (and arg (= (prefix-numeric-value arg) 16))) |
6163b3ba | 353 | (abbrev (dabbrev--abbrev-at-point)) |
543abb4a RS |
354 | (ignore-case-p (and (if (eq dabbrev-case-fold-search 'case-fold-search) |
355 | case-fold-search | |
356 | dabbrev-case-fold-search) | |
357 | (or (not dabbrev-upcase-means-case-search) | |
358 | (string= abbrev (downcase abbrev))))) | |
6163b3ba RS |
359 | (my-obarray dabbrev--last-obarray) |
360 | init) | |
361 | (save-excursion | |
362 | (if (and (null arg) | |
363 | my-obarray | |
364 | (or (eq dabbrev--last-completion-buffer (current-buffer)) | |
365 | (and (window-minibuffer-p (selected-window)) | |
366 | (eq dabbrev--last-completion-buffer | |
367 | (dabbrev--minibuffer-origin)))) | |
368 | dabbrev--last-abbreviation | |
369 | (>= (length abbrev) (length dabbrev--last-abbreviation)) | |
370 | (string= dabbrev--last-abbreviation | |
371 | (substring abbrev 0 | |
372 | (length dabbrev--last-abbreviation))) | |
373 | (setq init (try-completion abbrev my-obarray))) | |
7313ccdb RS |
374 | ;; We can reuse the existing completion list. |
375 | nil | |
6163b3ba RS |
376 | ;;-------------------------------- |
377 | ;; New abbreviation to expand. | |
378 | ;;-------------------------------- | |
6163b3ba RS |
379 | (setq dabbrev--last-abbreviation abbrev) |
380 | ;; Find all expansion | |
381 | (let ((completion-list | |
66db4b5b RS |
382 | (dabbrev--find-all-expansions abbrev ignore-case-p)) |
383 | (completion-ignore-case ignore-case-p)) | |
6163b3ba RS |
384 | ;; Make an obarray with all expansions |
385 | (setq my-obarray (make-vector (length completion-list) 0)) | |
386 | (or (> (length my-obarray) 0) | |
7313ccdb | 387 | (error "No dynamic expansion for \"%s\" found%s" |
6163b3ba RS |
388 | abbrev |
389 | (if dabbrev--check-other-buffers "" " in this-buffer"))) | |
390 | (cond | |
391 | ((or (not ignore-case-p) | |
392 | (not dabbrev-case-replace)) | |
df6eb420 RS |
393 | (mapcar (function (lambda (string) |
394 | (intern string my-obarray))) | |
395 | completion-list)) | |
6163b3ba | 396 | ((string= abbrev (upcase abbrev)) |
df6eb420 RS |
397 | (mapcar (function (lambda (string) |
398 | (intern (upcase string) my-obarray))) | |
399 | completion-list)) | |
6163b3ba RS |
400 | ((string= (substring abbrev 0 1) |
401 | (upcase (substring abbrev 0 1))) | |
df6eb420 RS |
402 | (mapcar (function (lambda (string) |
403 | (intern (capitalize string) my-obarray))) | |
404 | completion-list)) | |
6163b3ba | 405 | (t |
df6eb420 RS |
406 | (mapcar (function (lambda (string) |
407 | (intern (downcase string) my-obarray))) | |
408 | completion-list))) | |
6163b3ba RS |
409 | (setq dabbrev--last-obarray my-obarray) |
410 | (setq dabbrev--last-completion-buffer (current-buffer)) | |
411 | ;; Find the longest common string. | |
412 | (setq init (try-completion abbrev my-obarray))))) | |
413 | ;;-------------------------------- | |
414 | ;; Let the user choose between the expansions | |
415 | ;;-------------------------------- | |
416 | (or (stringp init) | |
417 | (setq init abbrev)) | |
418 | (cond | |
419 | ;; * Replace string fragment with matched common substring completion. | |
420 | ((and (not (string-equal init "")) | |
421 | (not (string-equal (downcase init) (downcase abbrev)))) | |
422 | (if (> (length (all-completions init my-obarray)) 1) | |
7313ccdb RS |
423 | (message "Repeat `%s' to see all completions" |
424 | (key-description (this-command-keys))) | |
6163b3ba RS |
425 | (message "The only possible completion")) |
426 | (dabbrev--substitute-expansion nil abbrev init)) | |
427 | (t | |
428 | ;; * String is a common substring completion already. Make list. | |
429 | (message "Making completion list...") | |
430 | (with-output-to-temp-buffer " *Completions*" | |
431 | (display-completion-list (all-completions init my-obarray))) | |
7313ccdb | 432 | (message "Making completion list...done"))) |
6163b3ba RS |
433 | (and (window-minibuffer-p (selected-window)) |
434 | (message nil)))) | |
2f790b20 JB |
435 | |
436 | ;;;###autoload | |
437 | (defun dabbrev-expand (arg) | |
438 | "Expand previous word \"dynamically\". | |
2f790b20 | 439 | |
6163b3ba RS |
440 | Expands to the most recent, preceding word for which this is a prefix. |
441 | If no suitable preceding word is found, words following point are | |
442 | considered. If still no suitable word is found, then look in the | |
443 | buffers accepted by the function pointed out by variable | |
444 | `dabbrev-friend-buffer-function'. | |
2f790b20 | 445 | |
7313ccdb | 446 | A positive prefix argument, N, says to take the Nth backward *distinct* |
6163b3ba | 447 | possibility. A negative argument says search forward. |
2f790b20 JB |
448 | |
449 | If the cursor has not moved from the end of the previous expansion and | |
450 | no argument is given, replace the previously-made expansion | |
6163b3ba RS |
451 | with the next possible expansion not yet tried. |
452 | ||
453 | The variable `dabbrev-backward-only' may be used to limit the | |
454 | direction of search to backward if set non-nil. | |
455 | ||
7313ccdb | 456 | See also `dabbrev-abbrev-char-regexp' and \\[dabbrev-completion]." |
2f790b20 | 457 | (interactive "*P") |
dea5efcb RS |
458 | (let (abbrev record-case-pattern |
459 | expansion old direction (orig-point (point))) | |
2f790b20 JB |
460 | ;; abbrev -- the abbrev to expand |
461 | ;; expansion -- the expansion found (eventually) or nil until then | |
462 | ;; old -- the text currently in the buffer | |
463 | ;; (the abbrev, or the previously-made expansion) | |
2f790b20 JB |
464 | (save-excursion |
465 | (if (and (null arg) | |
df6eb420 RS |
466 | (markerp dabbrev--last-abbrev-location) |
467 | (marker-position dabbrev--last-abbrev-location) | |
6163b3ba RS |
468 | (or (eq last-command this-command) |
469 | (and (window-minibuffer-p (selected-window)) | |
470 | (= dabbrev--last-abbrev-location | |
471 | (point))))) | |
7313ccdb | 472 | ;; Find a different expansion for the same abbrev as last time. |
6163b3ba RS |
473 | (progn |
474 | (setq abbrev dabbrev--last-abbreviation) | |
475 | (setq old dabbrev--last-expansion) | |
476 | (setq direction dabbrev--last-direction)) | |
a8a2d6ca KH |
477 | ;; If the user inserts a space after expanding |
478 | ;; and then asks to expand again, always fetch the next word. | |
479 | (if (and (eq (preceding-char) ?\ ) | |
480 | (markerp dabbrev--last-abbrev-location) | |
481 | (marker-position dabbrev--last-abbrev-location) | |
482 | (= (point) (1+ dabbrev--last-abbrev-location))) | |
dea5efcb | 483 | (progn |
a8a2d6ca KH |
484 | ;; The "abbrev" to expand is just the space. |
485 | (setq abbrev " ") | |
486 | (save-excursion | |
487 | (if dabbrev--last-buffer | |
488 | (set-buffer dabbrev--last-buffer)) | |
489 | ;; Find the end of the last "expansion" word. | |
490 | (if (or (eq dabbrev--last-direction 1) | |
491 | (and (eq dabbrev--last-direction 0) | |
492 | (< dabbrev--last-expansion-location (point)))) | |
493 | (setq dabbrev--last-expansion-location | |
494 | (+ dabbrev--last-expansion-location | |
495 | (length dabbrev--last-expansion)))) | |
496 | (goto-char dabbrev--last-expansion-location) | |
497 | ;; Take the following word, with intermediate separators, | |
498 | ;; as our expansion this time. | |
499 | (re-search-forward | |
500 | (concat "\\(\\(" dabbrev--abbrev-char-regexp "\\)+\\)")) | |
6f0b000c RS |
501 | (setq expansion (buffer-substring-no-properties |
502 | dabbrev--last-expansion-location (point))) | |
dea5efcb | 503 | (if dabbrev--last-case-pattern |
07e47d0b | 504 | (setq expansion (upcase expansion))) |
a8a2d6ca KH |
505 | |
506 | ;; Record the end of this expansion, in case we repeat this. | |
507 | (setq dabbrev--last-expansion-location (point))) | |
508 | ;; Indicate that dabbrev--last-expansion-location is | |
509 | ;; at the end of the expansion. | |
510 | (setq dabbrev--last-direction -1)) | |
511 | ||
512 | ;; We have a different abbrev to expand. | |
513 | (dabbrev--reset-global-variables) | |
514 | (setq direction (if (null arg) | |
515 | (if dabbrev-backward-only 1 0) | |
516 | (prefix-numeric-value arg))) | |
517 | (setq abbrev (dabbrev--abbrev-at-point)) | |
dea5efcb | 518 | (setq record-case-pattern t) |
a8a2d6ca | 519 | (setq old nil))) |
6163b3ba RS |
520 | |
521 | ;;-------------------------------- | |
522 | ;; Find the expansion | |
523 | ;;-------------------------------- | |
a8a2d6ca KH |
524 | (or expansion |
525 | (setq expansion | |
526 | (dabbrev--find-expansion abbrev direction | |
543abb4a RS |
527 | (and (if (eq dabbrev-case-fold-search 'case-fold-search) |
528 | case-fold-search | |
529 | dabbrev-case-fold-search) | |
a8a2d6ca KH |
530 | (or (not dabbrev-upcase-means-case-search) |
531 | (string= abbrev (downcase abbrev)))))))) | |
6163b3ba RS |
532 | (cond |
533 | ((not expansion) | |
534 | (dabbrev--reset-global-variables) | |
535 | (if old | |
536 | (save-excursion | |
4209f479 | 537 | (setq buffer-undo-list (cons orig-point buffer-undo-list)) |
3132e115 RS |
538 | ;; Put back the original abbrev with its original case pattern. |
539 | (search-backward old) | |
540 | (insert abbrev) | |
541 | (delete-region (point) (+ (point) (length old))))) | |
7313ccdb | 542 | (error "No%s dynamic expansion for `%s' found" |
6163b3ba RS |
543 | (if old " further" "") abbrev)) |
544 | (t | |
545 | (if (not (eq dabbrev--last-buffer dabbrev--last-buffer-found)) | |
2f790b20 | 546 | (progn |
6163b3ba RS |
547 | (message "Expansion found in '%s'" |
548 | (buffer-name dabbrev--last-buffer)) | |
549 | (setq dabbrev--last-buffer-found dabbrev--last-buffer)) | |
550 | (message nil)) | |
a8a2d6ca KH |
551 | (if (and (or (eq (current-buffer) dabbrev--last-buffer) |
552 | (null dabbrev--last-buffer)) | |
553 | (numberp dabbrev--last-expansion-location) | |
554 | (and (> dabbrev--last-expansion-location (point)))) | |
555 | (setq dabbrev--last-expansion-location | |
556 | (copy-marker dabbrev--last-expansion-location))) | |
2f790b20 | 557 | ;; Success: stick it in and return. |
4209f479 | 558 | (setq buffer-undo-list (cons orig-point buffer-undo-list)) |
6163b3ba | 559 | (dabbrev--substitute-expansion old abbrev expansion) |
dea5efcb RS |
560 | |
561 | ;; If we are not copying successive words now, | |
562 | ;; set dabbrev--last-case-pattern. | |
563 | (and record-case-pattern | |
564 | (setq dabbrev--last-case-pattern | |
543abb4a RS |
565 | (and (if (eq dabbrev-case-fold-search 'case-fold-search) |
566 | case-fold-search | |
567 | dabbrev-case-fold-search) | |
dea5efcb RS |
568 | (not dabbrev-upcase-means-case-search) |
569 | (equal abbrev (upcase abbrev))))) | |
570 | ||
2f790b20 | 571 | ;; Save state for re-expand. |
6163b3ba RS |
572 | (setq dabbrev--last-expansion expansion) |
573 | (setq dabbrev--last-abbreviation abbrev) | |
574 | (setq dabbrev--last-abbrev-location (point-marker)))))) | |
575 | ||
b578f267 EN |
576 | ;;---------------------------------------------------------------- |
577 | ;; Local functions | |
578 | ;;---------------------------------------------------------------- | |
6163b3ba | 579 | |
6163b3ba RS |
580 | ;;; Checks if OTHER-BUFFER has the same major mode as current buffer. |
581 | (defun dabbrev--same-major-mode-p (other-buffer) | |
7313ccdb RS |
582 | (eq major-mode |
583 | (save-excursion | |
584 | (set-buffer other-buffer) | |
585 | major-mode))) | |
6163b3ba RS |
586 | |
587 | ;;; Back over all abbrev type characters and then moves forward over | |
588 | ;;; all skip characters. | |
589 | (defun dabbrev--goto-start-of-abbrev () | |
590 | ;; Move backwards over abbrev chars | |
591 | (save-match-data | |
7313ccdb RS |
592 | (if (not (bobp)) |
593 | (progn | |
594 | (forward-char -1) | |
595 | (while (and (looking-at dabbrev--abbrev-char-regexp) | |
596 | (not (bobp))) | |
597 | (forward-char -1)) | |
598 | (or (looking-at dabbrev--abbrev-char-regexp) | |
599 | (forward-char 1)))) | |
6163b3ba RS |
600 | (and dabbrev-abbrev-skip-leading-regexp |
601 | (while (looking-at dabbrev-abbrev-skip-leading-regexp) | |
602 | (forward-char 1))))) | |
603 | ||
7313ccdb | 604 | ;;; Extract the symbol at point to serve as abbreviation. |
6163b3ba RS |
605 | (defun dabbrev--abbrev-at-point () |
606 | ;; Check for error | |
a8a2d6ca KH |
607 | (if (bobp) |
608 | (error "No possible abbreviation preceding point")) | |
6163b3ba RS |
609 | ;; Return abbrev at point |
610 | (save-excursion | |
a8a2d6ca | 611 | ;; Record the end of the abbreviation. |
6163b3ba | 612 | (setq dabbrev--last-abbrev-location (point)) |
a8a2d6ca KH |
613 | ;; If we aren't right after an abbreviation, |
614 | ;; move point back to just after one. | |
615 | ;; This is so the user can get successive words | |
616 | ;; by typing the punctuation followed by M-/. | |
617 | (save-match-data | |
618 | (if (save-excursion | |
619 | (forward-char -1) | |
620 | (not (looking-at (concat "\\(" | |
621 | (or dabbrev-abbrev-char-regexp | |
622 | "\\sw\\|\\s_") | |
623 | "\\)+")))) | |
624 | (if (re-search-backward (or dabbrev-abbrev-char-regexp | |
625 | "\\sw\\|\\s_") | |
626 | nil t) | |
627 | (forward-char 1) | |
628 | (error "No possible abbreviation preceding point")))) | |
629 | ;; Now find the beginning of that one. | |
630 | (dabbrev--goto-start-of-abbrev) | |
6f0b000c RS |
631 | (buffer-substring-no-properties |
632 | dabbrev--last-abbrev-location (point)))) | |
6163b3ba RS |
633 | |
634 | ;;; Initializes all global variables | |
635 | (defun dabbrev--reset-global-variables () | |
636 | ;; dabbrev--last-obarray and dabbrev--last-completion-buffer | |
637 | ;; must not be reset here. | |
638 | (setq dabbrev--last-table nil | |
639 | dabbrev--last-abbreviation nil | |
640 | dabbrev--last-abbrev-location nil | |
641 | dabbrev--last-direction nil | |
642 | dabbrev--last-expansion nil | |
643 | dabbrev--last-expansion-location nil | |
644 | dabbrev--friend-buffer-list nil | |
645 | dabbrev--last-buffer nil | |
646 | dabbrev--last-buffer-found nil | |
647 | dabbrev--abbrev-char-regexp (or dabbrev-abbrev-char-regexp | |
648 | "\\sw\\|\\s_") | |
df6eb420 | 649 | dabbrev--check-other-buffers dabbrev-check-other-buffers)) |
6163b3ba RS |
650 | |
651 | ;;; Find all buffers that are considered "friends" according to the | |
652 | ;;; function pointed out by dabbrev-friend-buffer-function. | |
653 | (defun dabbrev--select-buffers () | |
654 | (save-excursion | |
655 | (and (window-minibuffer-p (selected-window)) | |
656 | (set-buffer (dabbrev--minibuffer-origin))) | |
657 | (let ((orig-buffer (current-buffer))) | |
7313ccdb RS |
658 | (dabbrev-filter-elements |
659 | buffer (buffer-list) | |
660 | (and (not (eq orig-buffer buffer)) | |
661 | (boundp 'dabbrev-friend-buffer-function) | |
662 | (funcall dabbrev-friend-buffer-function buffer)))))) | |
663 | ||
664 | ;;; Search for ABBREV, N times, normally looking forward, | |
665 | ;;; but looking in reverse instead if REVERSE is non-nil. | |
6163b3ba RS |
666 | (defun dabbrev--try-find (abbrev reverse n ignore-case) |
667 | (save-excursion | |
df6eb420 RS |
668 | (save-restriction |
669 | (widen) | |
670 | (let ((expansion nil)) | |
671 | (and dabbrev--last-expansion-location | |
672 | (goto-char dabbrev--last-expansion-location)) | |
673 | (let ((case-fold-search ignore-case) | |
674 | (count n)) | |
675 | (while (and (> count 0) | |
676 | (setq expansion (dabbrev--search abbrev | |
677 | reverse | |
678 | ignore-case))) | |
679 | (setq count (1- count)))) | |
680 | (and expansion | |
681 | (setq dabbrev--last-expansion-location (point))) | |
682 | expansion)))) | |
6163b3ba RS |
683 | |
684 | ;;; Find all expansions of ABBREV | |
685 | (defun dabbrev--find-all-expansions (abbrev ignore-case) | |
686 | (let ((all-expansions nil) | |
687 | expansion) | |
688 | (save-excursion | |
689 | (goto-char (point-min)) | |
690 | (while (setq expansion (dabbrev--find-expansion abbrev -1 ignore-case)) | |
df6eb420 | 691 | (setq all-expansions (cons expansion all-expansions)))) |
6163b3ba RS |
692 | all-expansions)) |
693 | ||
694 | (defun dabbrev--scanning-message () | |
7313ccdb | 695 | (message "Scanning `%s'" (buffer-name (current-buffer)))) |
6163b3ba RS |
696 | |
697 | ;;; Find one occasion of ABBREV. | |
698 | ;;; DIRECTION > 0 means look that many times backwards. | |
699 | ;;; DIRECTION < 0 means look that many times forward. | |
700 | ;;; DIRECTION = 0 means try both backward and forward. | |
701 | ;;; IGNORE-CASE non-nil means ignore case when searching. | |
702 | (defun dabbrev--find-expansion (abbrev direction ignore-case) | |
703 | (let (expansion) | |
704 | (save-excursion | |
705 | (cond | |
706 | (dabbrev--last-buffer | |
707 | (set-buffer dabbrev--last-buffer) | |
708 | (dabbrev--scanning-message)) | |
709 | ((and (not dabbrev-search-these-buffers-only) | |
710 | (window-minibuffer-p (selected-window))) | |
711 | (set-buffer (dabbrev--minibuffer-origin)) | |
712 | ;; In the minibuffer-origin buffer we will only search from | |
713 | ;; the top and down. | |
714 | (goto-char (point-min)) | |
715 | (setq direction -1) | |
716 | (dabbrev--scanning-message))) | |
717 | (cond | |
718 | ;; ------------------------------------------ | |
719 | ;; Look backwards | |
720 | ;; ------------------------------------------ | |
721 | ((and (not dabbrev-search-these-buffers-only) | |
722 | (>= direction 0) | |
723 | (setq dabbrev--last-direction (min 1 direction)) | |
724 | (setq expansion (dabbrev--try-find abbrev t | |
725 | (max 1 direction) | |
726 | ignore-case))) | |
727 | expansion) | |
728 | ;; ------------------------------------------ | |
729 | ;; Look forward | |
730 | ;; ------------------------------------------ | |
731 | ((and (or (not dabbrev-search-these-buffers-only) | |
732 | dabbrev--last-buffer) | |
733 | (<= direction 0) | |
734 | (setq dabbrev--last-direction -1) | |
735 | (setq expansion (dabbrev--try-find abbrev nil | |
736 | (max 1 (- direction)) | |
737 | ignore-case))) | |
738 | expansion) | |
739 | ;; ------------------------------------------ | |
740 | ;; Look in other buffers. | |
741 | ;; Start at (point-min) and look forward. | |
742 | ;; ------------------------------------------ | |
743 | (t | |
744 | (setq dabbrev--last-direction -1) | |
745 | ;; Make sure that we should check other buffers | |
746 | (or dabbrev--friend-buffer-list | |
747 | dabbrev--last-buffer | |
748 | (setq dabbrev--friend-buffer-list | |
749 | (mapcar (function get-buffer) | |
750 | dabbrev-search-these-buffers-only)) | |
751 | (not dabbrev--check-other-buffers) | |
752 | (not (or (eq dabbrev--check-other-buffers t) | |
753 | (progn | |
754 | (setq dabbrev--check-other-buffers | |
7313ccdb | 755 | (y-or-n-p "Scan other buffers also? "))))) |
6163b3ba RS |
756 | (let* (friend-buffer-list non-friend-buffer-list) |
757 | (setq dabbrev--friend-buffer-list | |
758 | (funcall dabbrev-select-buffers-function)) | |
df6eb420 | 759 | (if dabbrev-check-all-buffers |
7313ccdb RS |
760 | (setq non-friend-buffer-list |
761 | (nreverse | |
762 | (dabbrev-filter-elements | |
763 | buffer (buffer-list) | |
7bd9ba70 RS |
764 | (and (not (member (buffer-name buffer) |
765 | dabbrev-ignored-buffer-names)) | |
766 | (not (memq buffer dabbrev--friend-buffer-list))))) | |
7313ccdb RS |
767 | dabbrev--friend-buffer-list |
768 | (append dabbrev--friend-buffer-list | |
769 | non-friend-buffer-list))))) | |
d8f7e85a RS |
770 | ;; Move buffers that are visible on the screen |
771 | ;; to the front of the list. | |
772 | (if dabbrev--friend-buffer-list | |
773 | (let ((w (next-window (selected-window)))) | |
774 | (while (not (eq w (selected-window))) | |
775 | (setq dabbrev--friend-buffer-list | |
776 | (cons (window-buffer w) | |
777 | (delq (window-buffer w) dabbrev--friend-buffer-list))) | |
778 | (setq w (next-window w))))) | |
6163b3ba RS |
779 | ;; Walk through the buffers |
780 | (while (and (not expansion) dabbrev--friend-buffer-list) | |
781 | (setq dabbrev--last-buffer | |
782 | (car dabbrev--friend-buffer-list)) | |
783 | (setq dabbrev--friend-buffer-list | |
784 | (cdr dabbrev--friend-buffer-list)) | |
785 | (set-buffer dabbrev--last-buffer) | |
786 | (dabbrev--scanning-message) | |
787 | (setq dabbrev--last-expansion-location (point-min)) | |
788 | (setq expansion (dabbrev--try-find abbrev nil 1 ignore-case))) | |
789 | expansion))))) | |
790 | ||
6163b3ba RS |
791 | (defun dabbrev--safe-replace-match (string &optional fixedcase literal) |
792 | (if (eq major-mode 'picture-mode) | |
793 | (picture-replace-match string fixedcase literal) | |
794 | (replace-match string fixedcase literal))) | |
795 | ||
796 | ;;;---------------------------------------------------------------- | |
797 | ;;; Substitute the current string in buffer with the expansion | |
798 | ;;; OLD is nil or the last expansion substring. | |
799 | ;;; ABBREV is the abbreviation we are working with. | |
800 | ;;; EXPANSION is the expansion substring. | |
801 | (defun dabbrev--substitute-expansion (old abbrev expansion) | |
802 | ;;(undo-boundary) | |
543abb4a RS |
803 | (let ((use-case-replace (and (if (eq dabbrev-case-fold-search 'case-fold-search) |
804 | case-fold-search | |
805 | dabbrev-case-fold-search) | |
6163b3ba RS |
806 | (or (not dabbrev-upcase-means-case-search) |
807 | (string= abbrev (downcase abbrev))) | |
543abb4a RS |
808 | (if (eq dabbrev-case-replace 'case-replace) |
809 | case-replace | |
810 | dabbrev-case-replace)))) | |
6163b3ba RS |
811 | (and nil use-case-replace |
812 | (setq old (concat abbrev (or old ""))) | |
813 | (setq expansion (concat abbrev expansion))) | |
65411629 RS |
814 | ;; If the expansion has mixed case |
815 | ;; and it is not simply a capitalized word, | |
816 | ;; or if the abbrev has mixed case, | |
817 | ;; and if the given abbrev's case pattern | |
66db4b5b RS |
818 | ;; matches the start of the expansion, |
819 | ;; copy the expansion's case | |
820 | ;; instead of downcasing all the rest. | |
65411629 RS |
821 | (let ((expansion-rest (substring expansion 1))) |
822 | (if (and (not (and (or (string= expansion-rest (downcase expansion-rest)) | |
823 | (string= expansion-rest (upcase expansion-rest))) | |
824 | (or (string= abbrev (downcase abbrev)) | |
825 | (string= abbrev (upcase abbrev))))) | |
826 | (string= abbrev | |
827 | (substring expansion 0 (length abbrev)))) | |
828 | (setq use-case-replace nil))) | |
07e47d0b RS |
829 | (if (equal abbrev " ") |
830 | (setq use-case-replace nil)) | |
831 | (if use-case-replace | |
832 | (setq expansion (downcase expansion))) | |
6163b3ba RS |
833 | (if old |
834 | (save-excursion | |
835 | (search-backward old)) | |
9b7c13e0 | 836 | ;;(set-match-data (list (point-marker) (point-marker))) |
6163b3ba RS |
837 | (search-backward abbrev)) |
838 | ;; Make case of replacement conform to case of abbreviation | |
839 | ;; provided (1) that kind of thing is enabled in this buffer | |
840 | ;; and (2) the replacement itself is all lower case. | |
841 | (dabbrev--safe-replace-match expansion | |
842 | (not use-case-replace) | |
843 | t))) | |
844 | ||
845 | ||
846 | ;;;---------------------------------------------------------------- | |
847 | ;;; Search function used by dabbrevs library. | |
848 | ||
7313ccdb | 849 | ;;; ABBREV is string to find as prefix of word. Second arg, REVERSE, |
6163b3ba | 850 | ;;; is t for reverse search, nil for forward. Variable dabbrev-limit |
a7acbbe4 | 851 | ;;; controls the maximum search region size. Third argument IGNORE-CASE |
6163b3ba RS |
852 | ;;; non-nil means treat case as insignificant while looking for a match |
853 | ;;; and when comparing with previous matches. Also if that's non-nil | |
854 | ;;; and the match is found at the beginning of a sentence and is in | |
855 | ;;; lower case except for the initial then it is converted to all lower | |
856 | ;;; case for return. | |
857 | ||
858 | ;;; Table of expansions already seen is examined in buffer | |
859 | ;;; `dabbrev--last-table' so that only distinct possibilities are found | |
860 | ;;; by dabbrev-re-expand. | |
861 | ||
862 | ;;; Value is the expansion, or nil if not found. | |
863 | ||
864 | (defun dabbrev--search (abbrev reverse ignore-case) | |
865 | (save-match-data | |
866 | (let ((pattern1 (concat (regexp-quote abbrev) | |
867 | "\\(" dabbrev--abbrev-char-regexp "\\)")) | |
868 | (pattern2 (concat (regexp-quote abbrev) | |
869 | "\\(\\(" dabbrev--abbrev-char-regexp "\\)+\\)")) | |
870 | (found-string nil)) | |
871 | ;; Limited search. | |
872 | (save-restriction | |
873 | (and dabbrev-limit | |
874 | (narrow-to-region dabbrev--last-expansion-location | |
875 | (+ (point) | |
876 | (if reverse (- dabbrev-limit) dabbrev-limit)))) | |
877 | ;;-------------------------------- | |
878 | ;; Look for a distinct expansion, using dabbrev--last-table. | |
879 | ;;-------------------------------- | |
880 | (while (and (not found-string) | |
881 | (if reverse | |
882 | (re-search-backward pattern1 nil t) | |
883 | (re-search-forward pattern1 nil t))) | |
63d991d6 KH |
884 | (goto-char (match-beginning 0)) |
885 | ;; In case we matched in the middle of a word, | |
886 | ;; back up to start of word and verify we still match. | |
887 | (dabbrev--goto-start-of-abbrev) | |
888 | ||
889 | (if (not (looking-at pattern1)) | |
890 | nil | |
891 | ;; We have a truly valid match. Find the end. | |
6163b3ba | 892 | (re-search-forward pattern2) |
6f0b000c RS |
893 | (setq found-string (buffer-substring-no-properties |
894 | (match-beginning 1) (match-end 1))) | |
6163b3ba | 895 | (and ignore-case (setq found-string (downcase found-string))) |
63d991d6 | 896 | ;; Ignore this match if it's already in the table. |
7313ccdb RS |
897 | (if (dabbrev-filter-elements |
898 | table-string dabbrev--last-table | |
899 | (string= found-string table-string)) | |
63d991d6 KH |
900 | (setq found-string nil))) |
901 | ;; Prepare to continue searching. | |
6163b3ba RS |
902 | (if reverse |
903 | (goto-char (match-beginning 0)) | |
904 | (goto-char (match-end 0)))) | |
63d991d6 KH |
905 | ;; If we found something, use it. |
906 | (if found-string | |
907 | ;; Put it into `dabbrev--last-table' | |
908 | ;; and return it (either downcased, or as is). | |
6f0b000c RS |
909 | (let ((result (buffer-substring-no-properties |
910 | (match-beginning 0) (match-end 0)))) | |
63d991d6 KH |
911 | (setq dabbrev--last-table |
912 | (cons found-string dabbrev--last-table)) | |
913 | (if (and ignore-case (eval dabbrev-case-replace)) | |
66db4b5b | 914 | result |
63d991d6 | 915 | result))))))) |
6163b3ba | 916 | |
01987a6b | 917 | (provide 'dabbrev) |
7313ccdb | 918 | |
b578f267 | 919 | ;;; dabbrev.el ends here |