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7313ccdb | 1 | ;;; dabbrev.el --- dynamic abbreviation package |
b578f267 | 2 | |
0d30b337 | 3 | ;; Copyright (C) 1985, 1986, 1992, 1994, 1996, 1997, 2000, 2001, 2002, |
f3ae2521 GM |
4 | ;; 2003, 2004, 2005, 2006, 2007, 2008, 2009 |
5 | ;; Free Software Foundation, Inc. | |
2f790b20 | 6 | |
6163b3ba | 7 | ;; Author: Don Morrison |
f3ae2521 GM |
8 | ;; Lars Lindberg |
9 | ;; (according to ack.texi) | |
6163b3ba RS |
10 | ;; Maintainer: Lars Lindberg <Lars.Lindberg@sypro.cap.se> |
11 | ;; Created: 16 Mars 1992 | |
df6eb420 | 12 | ;; Lindberg's last update version: 5.7 |
f5f727f8 | 13 | ;; Keywords: abbrev expand completion convenience |
3a801d0c | 14 | |
b578f267 EN |
15 | ;; This file is part of GNU Emacs. |
16 | ||
eb3fa2cf | 17 | ;; GNU Emacs is free software: you can redistribute it and/or modify |
2f790b20 | 18 | ;; it under the terms of the GNU General Public License as published by |
eb3fa2cf GM |
19 | ;; the Free Software Foundation, either version 3 of the License, or |
20 | ;; (at your option) any later version. | |
b578f267 EN |
21 | |
22 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
2f790b20 JB |
23 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of |
24 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
25 | ;; GNU General Public License for more details. | |
b578f267 | 26 | |
2f790b20 | 27 | ;; You should have received a copy of the GNU General Public License |
eb3fa2cf | 28 | ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. |
2f790b20 | 29 | |
e5167999 | 30 | ;;; Commentary: |
2f790b20 | 31 | |
6163b3ba RS |
32 | ;; The purpose with this package is to let you write just a few |
33 | ;; characters of words you've written earlier to be able to expand | |
34 | ;; them. | |
35 | ;; | |
36 | ;; To expand a word, just put the point right after the word and press | |
37 | ;; M-/ (dabbrev-expand) or M-C-/ (dabbrev-completion). | |
38 | ;; | |
6163b3ba RS |
39 | ;; Check out the customizable variables below to learn about all the |
40 | ;; features of this package. | |
41 | ||
42 | ;;; Hints and tips for major modes writers: | |
43 | ||
44 | ;; Recommended values C/Lisp etc text | |
45 | ;; dabbrev-case-fold-search nil t | |
46 | ;; dabbrev-case-replace nil t | |
47 | ;; | |
48 | ;; Set the variables you want special for your mode like this: | |
49 | ;; (set (make-local-variable 'dabbrev-case-replace) nil) | |
a7acbbe4 | 50 | ;; Then you don't interfere with other modes. |
6163b3ba RS |
51 | ;; |
52 | ;; If your mode handles buffers that refers to other buffers | |
53 | ;; (i.e. compilation-mode, gud-mode), then try to set | |
54 | ;; `dabbrev-select-buffers-function' or `dabbrev-friend-buffer-function' | |
55 | ;; to a function that point out those buffers. | |
56 | ||
57 | ;; Same goes for major-modes that are connected to other modes. There | |
58 | ;; are for instance a number of mail-modes. One for reading, one for | |
59 | ;; creating a new mail etc. Maybe those should be connected. | |
60 | ||
61 | ;; Example for GNUS (when we write a reply, we want dabbrev to look in | |
62 | ;; the article for expansion): | |
63 | ;; (set (make-local-variable 'dabbrev-friend-buffer-function) | |
64 | ;; (lambda (buffer) | |
65 | ;; (save-excursion | |
66 | ;; (set-buffer buffer) | |
67 | ;; (memq major-mode '(news-reply-mode gnus-article-mode))))) | |
68 | ||
6163b3ba RS |
69 | |
70 | ;; Known bugs and limitations. | |
71 | ;; - Possible to do several levels of `dabbrev-completion' in the | |
72 | ;; minibuffer. | |
73 | ;; - dabbrev-completion doesn't handle resetting the globals variables | |
74 | ;; right. It resets them after finding the abbrev. | |
75 | ||
76 | ;; Future enhancements | |
77 | ;; - Check the tags-files? Like tags-complete? | |
78 | ;; - Add the possibility of searching both forward and backward to | |
79 | ;; the nearest expansion. | |
7313ccdb RS |
80 | ;; - Check the kill-ring when everything else fails. (Maybe something |
81 | ;; for hippie-expand?). [Bng] <boris@cs.rochester.edu> | |
6163b3ba | 82 | |
df6eb420 | 83 | ;;; These people gave suggestions: |
6163b3ba RS |
84 | ;; [hymie] Hyman Rosen <marks!hymie@jyacc.jyacc.com> |
85 | ;; [burgett] Steve Burgett <burgett@bizet.eecs.berkeley.edu> | |
86 | ;; [jules] Julian Gosnell <jules@x.co.uk> | |
87 | ;; [kifer] Michael Kifer <kifer@sbcs.sunysb.edu> | |
88 | ;; [ake] Ake Stenhoff <extaksf@aom.ericsson.se> | |
89 | ;; [alon] Alon Albert <al%imercury@uunet.uu.net> | |
90 | ;; [tromey] Tom Tromey <tromey@busco.lanl.gov> | |
91 | ;; [Rolf] Rolf Schreiber <rolf@mathematik.uni-stuttgart.de> | |
92 | ;; [Petri] Petri Raitio <per@tekla.fi> | |
7bd9ba70 | 93 | ;; [ejb] Jay Berkenbilt <ejb@ql.org> |
6163b3ba RS |
94 | ;; [hawley] Bob Hawley <rth1@quartet.mt.att.com> |
95 | ;; ... and to all the people who have participated in the beta tests. | |
2f790b20 | 96 | |
e5167999 | 97 | ;;; Code: |
6163b3ba | 98 | |
b578f267 EN |
99 | ;;---------------------------------------------------------------- |
100 | ;; Customization variables | |
101 | ;;---------------------------------------------------------------- | |
6163b3ba | 102 | |
bbf5eb28 | 103 | (defgroup dabbrev nil |
a6bd541a | 104 | "Dynamic Abbreviations." |
bbf5eb28 | 105 | :tag "Dynamic Abbreviations" |
f5f727f8 DN |
106 | :group 'abbrev |
107 | :group 'convenience) | |
6163b3ba | 108 | |
bbf5eb28 | 109 | (defcustom dabbrev-backward-only nil |
9201cc28 | 110 | "If non-nil, `dabbrev-expand' only looks backwards." |
bbf5eb28 RS |
111 | :type 'boolean |
112 | :group 'dabbrev) | |
113 | ||
114 | (defcustom dabbrev-limit nil | |
9201cc28 | 115 | "Limits region searched by `dabbrev-expand' to this many chars away." |
bbf5eb28 RS |
116 | :type '(choice (const :tag "off" nil) |
117 | integer) | |
118 | :group 'dabbrev) | |
119 | ||
120 | (defcustom dabbrev-abbrev-skip-leading-regexp nil | |
9201cc28 | 121 | "Regexp for skipping leading characters of an abbreviation. |
6163b3ba | 122 | |
7313ccdb RS |
123 | Example: Set this to \"\\\\$\" for programming languages |
124 | in which variable names may appear with or without a leading `$'. | |
79bb4872 | 125 | \(For example, in Makefiles.\) |
6163b3ba | 126 | |
bbf5eb28 RS |
127 | Set this to nil if no characters should be skipped." |
128 | :type '(choice regexp | |
129 | (const :tag "off" nil)) | |
130 | :group 'dabbrev) | |
6163b3ba | 131 | |
e2e75068 | 132 | (defcustom dabbrev-eliminate-newlines t |
9201cc28 | 133 | "Non-nil means dabbrev should not insert newlines. |
fd2dfb40 RS |
134 | Instead it converts them to spaces." |
135 | :type 'boolean | |
136 | :group 'dabbrev) | |
137 | ||
bbf5eb28 | 138 | (defcustom dabbrev-case-fold-search 'case-fold-search |
9201cc28 | 139 | "Control whether dabbrev searches should ignore case. |
7313ccdb | 140 | A value of nil means case is significant. |
543abb4a RS |
141 | A value of `case-fold-search' means case is significant |
142 | if `case-fold-search' is nil. | |
143 | Any other non-nil version means case is not significant." | |
144 | :type '(choice (const :tag "off" nil) | |
eaaca5ee AS |
145 | (const :tag "like search" case-fold-search) |
146 | (other :tag "on" t)) | |
bbf5eb28 | 147 | :group 'dabbrev) |
6163b3ba | 148 | |
bbf5eb28 | 149 | (defcustom dabbrev-upcase-means-case-search nil |
9201cc28 | 150 | "The significance of an uppercase character in an abbreviation. |
602ea79e | 151 | A nil value means case fold search when searching for possible expansions; |
93a43334 | 152 | non-nil means case sensitive search. |
6163b3ba | 153 | |
7313ccdb | 154 | This variable has an effect only when the value of |
543abb4a | 155 | `dabbrev-case-fold-search' says to ignore case." |
bbf5eb28 RS |
156 | :type 'boolean |
157 | :group 'dabbrev) | |
6163b3ba | 158 | |
93a43334 | 159 | (defcustom dabbrev-case-distinction 'case-replace |
9201cc28 | 160 | "Whether dabbrev treats expansions as the same if they differ in case. |
93a43334 RS |
161 | |
162 | A value of nil means treat them as different. | |
163 | A value of `case-replace' means distinguish them if `case-replace' is nil. | |
164 | Any other non-nil value means to treat them as the same. | |
165 | ||
166 | This variable has an effect only when the value of | |
167 | `dabbrev-case-fold-search' specifies to ignore case." | |
168 | :type '(choice (const :tag "off" nil) | |
169 | (const :tag "based on `case-replace'" case-replace) | |
170 | (other :tag "on" t)) | |
171 | :group 'dabbrev | |
bf247b6e | 172 | :version "22.1") |
93a43334 | 173 | |
bbf5eb28 | 174 | (defcustom dabbrev-case-replace 'case-replace |
9201cc28 | 175 | "Whether dabbrev applies the abbreviations's case pattern to the expansion. |
93a43334 RS |
176 | |
177 | A value of nil means preserve the expansion's case pattern. | |
178 | A value of `case-replace' means preserve it if `case-replace' is nil. | |
179 | Any other non-nil value means modify the expansion | |
180 | by applying the abbreviation's case pattern to it. | |
6163b3ba | 181 | |
7313ccdb | 182 | This variable has an effect only when the value of |
543abb4a RS |
183 | `dabbrev-case-fold-search' specifies to ignore case." |
184 | :type '(choice (const :tag "off" nil) | |
93a43334 | 185 | (const :tag "based on `case-replace'" case-replace) |
eaaca5ee | 186 | (other :tag "on" t)) |
bbf5eb28 | 187 | :group 'dabbrev) |
6163b3ba | 188 | |
bbf5eb28 | 189 | (defcustom dabbrev-abbrev-char-regexp nil |
9201cc28 | 190 | "Regexp to recognize a character in an abbreviation or expansion. |
7313ccdb | 191 | This regexp will be surrounded with \\\\( ... \\\\) when actually used. |
6163b3ba | 192 | |
7313ccdb | 193 | Set this variable to \"\\\\sw\" if you want ordinary words or |
df6eb420 RS |
194 | \"\\\\sw\\\\|\\\\s_\" if you want symbols (including characters whose |
195 | syntax is \"symbol\" as well as those whose syntax is \"word\". | |
6163b3ba | 196 | |
df6eb420 RS |
197 | The value nil has a special meaning: the abbreviation is from point to |
198 | previous word-start, but the search is for symbols. | |
6163b3ba | 199 | |
7313ccdb | 200 | For instance, if you are programming in Lisp, `yes-or-no-p' is a symbol, |
df6eb420 RS |
201 | while `yes', `or', `no' and `p' are considered words. If this |
202 | variable is nil, then expanding `yes-or-no-' looks for a symbol | |
7313ccdb RS |
203 | starting with or containing `no-'. If you set this variable to |
204 | \"\\\\sw\\\\|\\\\s_\", that expansion looks for a symbol starting with | |
205 | `yes-or-no-'. Finally, if you set this variable to \"\\\\sw\", then | |
206 | expanding `yes-or-no-' signals an error because `-' is not part of a word; | |
207 | but expanding `yes-or-no' looks for a word starting with `no'. | |
6163b3ba | 208 | |
bbf5eb28 RS |
209 | The recommended value is \"\\\\sw\\\\|\\\\s_\"." |
210 | :type '(choice (const nil) | |
211 | regexp) | |
212 | :group 'dabbrev) | |
6163b3ba | 213 | |
bbf5eb28 | 214 | (defcustom dabbrev-check-all-buffers t |
9201cc28 | 215 | "Non-nil means dabbrev package should search *all* buffers. |
6163b3ba | 216 | |
df6eb420 RS |
217 | Dabbrev always searches the current buffer first. Then, if |
218 | `dabbrev-check-other-buffers' says so, it searches the buffers | |
219 | designated by `dabbrev-select-buffers-function'. | |
6163b3ba | 220 | |
df6eb420 | 221 | Then, if `dabbrev-check-all-buffers' is non-nil, dabbrev searches |
7e65cba2 GM |
222 | all the other buffers, except those named in `dabbrev-ignored-buffer-names', |
223 | or matched by `dabbrev-ignored-regexps'." | |
bbf5eb28 RS |
224 | :type 'boolean |
225 | :group 'dabbrev) | |
df6eb420 | 226 | |
9648a1e6 | 227 | (defcustom dabbrev-ignored-buffer-names '("*Messages*" "*Buffer List*") |
9201cc28 | 228 | "List of buffer names that dabbrev should not check. |
c4ca64db | 229 | See also `dabbrev-ignored-buffer-regexps'." |
7bd9ba70 | 230 | :type '(repeat (string :tag "Buffer name")) |
cd32a7ba DN |
231 | :group 'dabbrev |
232 | :version "20.3") | |
7bd9ba70 | 233 | |
c4ca64db | 234 | (defcustom dabbrev-ignored-buffer-regexps nil |
9201cc28 | 235 | "List of regexps matching names of buffers that dabbrev should not check. |
7e65cba2 GM |
236 | See also `dabbrev-ignored-buffer-names'." |
237 | :type '(repeat regexp) | |
238 | :group 'dabbrev | |
239 | :version "21.1") | |
240 | ||
bbf5eb28 | 241 | (defcustom dabbrev-check-other-buffers t |
9201cc28 | 242 | "Should \\[dabbrev-expand] look in other buffers?\ |
6163b3ba | 243 | |
df6eb420 RS |
244 | nil: Don't look in other buffers. |
245 | t: Also look for expansions in the buffers pointed out by | |
246 | `dabbrev-select-buffers-function'. | |
247 | Anything else: When we can't find any more expansions in | |
248 | the current buffer, then ask the user whether to look in other | |
249 | buffers too. | |
250 | ||
bbf5eb28 RS |
251 | The default value is t." |
252 | :type '(choice (const :tag "off" nil) | |
253 | (const :tag "on" t) | |
eaaca5ee | 254 | (other :tag "ask" other)) |
bbf5eb28 | 255 | :group 'dabbrev) |
6163b3ba RS |
256 | |
257 | ;; I guess setting this to a function that selects all C- or C++- | |
258 | ;; mode buffers would be a good choice for a debugging buffer, | |
259 | ;; when debugging C- or C++-code. | |
260 | (defvar dabbrev-select-buffers-function 'dabbrev--select-buffers | |
261 | "A function that selects buffers that should be searched by dabbrev. | |
6163b3ba | 262 | The function should take no arguments and return a list of buffers to |
05be3833 RS |
263 | search for expansions. See the source of `dabbrev--select-buffers' |
264 | for an example. | |
6163b3ba RS |
265 | |
266 | A mode setting this variable should make it buffer local.") | |
267 | ||
bbf5eb28 | 268 | (defcustom dabbrev-friend-buffer-function 'dabbrev--same-major-mode-p |
9201cc28 | 269 | "A function to decide whether dabbrev should search OTHER-BUFFER. |
6163b3ba RS |
270 | The function should take one argument, OTHER-BUFFER, and return |
271 | non-nil if that buffer should be searched. Have a look at | |
272 | `dabbrev--same-major-mode-p' for an example. | |
273 | ||
7313ccdb RS |
274 | The value of `dabbrev-friend-buffer-function' has an effect only if |
275 | the value of `dabbrev-select-buffers-function' uses it. The function | |
276 | `dabbrev--select-buffers' is one function you can use here. | |
6163b3ba | 277 | |
bbf5eb28 RS |
278 | A mode setting this variable should make it buffer local." |
279 | :type 'function | |
280 | :group 'dabbrev) | |
6163b3ba | 281 | |
bbf5eb28 | 282 | (defcustom dabbrev-search-these-buffers-only nil |
7313ccdb RS |
283 | "If non-nil, a list of buffers which dabbrev should search. |
284 | If this variable is non-nil, dabbrev will only look in these buffers. | |
285 | It will not even look in the current buffer if it is not a member of | |
f5307782 JB |
286 | this list." |
287 | :group 'dabbrev) | |
e5167999 | 288 | |
b578f267 EN |
289 | ;;---------------------------------------------------------------- |
290 | ;; Internal variables | |
291 | ;;---------------------------------------------------------------- | |
2f790b20 | 292 | |
6163b3ba RS |
293 | ;; Last obarray of completions in `dabbrev-completion' |
294 | (defvar dabbrev--last-obarray nil) | |
2f790b20 | 295 | |
6163b3ba RS |
296 | ;; Table of expansions seen so far |
297 | (defvar dabbrev--last-table nil) | |
2f790b20 | 298 | |
6163b3ba RS |
299 | ;; Last string we tried to expand. |
300 | (defvar dabbrev--last-abbreviation nil) | |
2f790b20 | 301 | |
6163b3ba RS |
302 | ;; Location last abbreviation began |
303 | (defvar dabbrev--last-abbrev-location nil) | |
2f790b20 | 304 | |
6163b3ba RS |
305 | ;; Direction of last dabbrevs search |
306 | (defvar dabbrev--last-direction 0) | |
2f790b20 | 307 | |
6163b3ba RS |
308 | ;; Last expansion of an abbreviation. |
309 | (defvar dabbrev--last-expansion nil) | |
2f790b20 | 310 | |
6163b3ba RS |
311 | ;; Location the last expansion was found. |
312 | (defvar dabbrev--last-expansion-location nil) | |
313 | ||
314 | ;; The list of remaining buffers with the same mode as current buffer. | |
315 | (defvar dabbrev--friend-buffer-list nil) | |
316 | ||
513e7954 | 317 | ;; The buffer we looked in last, not counting the current buffer. |
6163b3ba RS |
318 | (defvar dabbrev--last-buffer nil) |
319 | ||
320 | ;; The buffer we found the expansion last time. | |
321 | (defvar dabbrev--last-buffer-found nil) | |
322 | ||
323 | ;; The buffer we last did a completion in. | |
324 | (defvar dabbrev--last-completion-buffer nil) | |
325 | ||
3ffa545b GM |
326 | ;; If non-nil, a function to use when copying successive words. |
327 | ;; It should be `upcase' or `downcase'. | |
dea5efcb RS |
328 | (defvar dabbrev--last-case-pattern nil) |
329 | ||
df6eb420 RS |
330 | ;; Same as dabbrev-check-other-buffers, but is set for every expand. |
331 | (defvar dabbrev--check-other-buffers dabbrev-check-other-buffers) | |
6163b3ba RS |
332 | |
333 | ;; The regexp for recognizing a character in an abbreviation. | |
334 | (defvar dabbrev--abbrev-char-regexp nil) | |
335 | ||
7daa3523 TTN |
336 | ;; The progress reporter for buffer-scanning progress. |
337 | (defvar dabbrev--progress-reporter nil) | |
338 | ||
b578f267 EN |
339 | ;;---------------------------------------------------------------- |
340 | ;; Macros | |
341 | ;;---------------------------------------------------------------- | |
6163b3ba RS |
342 | |
343 | ;;; Get the buffer that mini-buffer was activated from | |
344 | (defsubst dabbrev--minibuffer-origin () | |
345 | (car (cdr (buffer-list)))) | |
346 | ||
7313ccdb RS |
347 | ;; Make a list of some of the elements of LIST. |
348 | ;; Check each element of LIST, storing it temporarily in the | |
349 | ;; variable ELEMENT, and include it in the result | |
350 | ;; if CONDITION evaluates non-nil. | |
351 | (defmacro dabbrev-filter-elements (element list condition) | |
da49057c SS |
352 | `(let (dabbrev-result dabbrev-tail ,element) |
353 | (setq dabbrev-tail ,list) | |
354 | (while dabbrev-tail | |
355 | (setq ,element (car dabbrev-tail)) | |
356 | (if ,condition | |
357 | (setq dabbrev-result (cons ,element dabbrev-result))) | |
358 | (setq dabbrev-tail (cdr dabbrev-tail))) | |
359 | (nreverse dabbrev-result))) | |
7313ccdb | 360 | |
b578f267 EN |
361 | ;;---------------------------------------------------------------- |
362 | ;; Exported functions | |
363 | ;;---------------------------------------------------------------- | |
6163b3ba | 364 | |
a1ff29b9 | 365 | ;;;###autoload (define-key esc-map "/" 'dabbrev-expand) |
7313ccdb | 366 | ;;;??? Do we want this? |
a1ff29b9 | 367 | ;;;###autoload (define-key esc-map [?\C-/] 'dabbrev-completion) |
6163b3ba RS |
368 | |
369 | ;;;###autoload | |
370 | (defun dabbrev-completion (&optional arg) | |
371 | "Completion on current word. | |
6163b3ba RS |
372 | Like \\[dabbrev-expand] but finds all expansions in the current buffer |
373 | and presents suggestions for completion. | |
374 | ||
7313ccdb RS |
375 | With a prefix argument, it searches all buffers accepted by the |
376 | function pointed out by `dabbrev-friend-buffer-function' to find the | |
dd1ae355 RS |
377 | completions. |
378 | ||
379 | If the prefix argument is 16 (which comes from C-u C-u), | |
fe0e0a47 | 380 | then it searches *all* buffers." |
6163b3ba | 381 | (interactive "*P") |
df6eb420 RS |
382 | (dabbrev--reset-global-variables) |
383 | (let* ((dabbrev-check-other-buffers (and arg t)) | |
384 | (dabbrev-check-all-buffers | |
dd1ae355 | 385 | (and arg (= (prefix-numeric-value arg) 16))) |
6163b3ba | 386 | (abbrev (dabbrev--abbrev-at-point)) |
543abb4a RS |
387 | (ignore-case-p (and (if (eq dabbrev-case-fold-search 'case-fold-search) |
388 | case-fold-search | |
389 | dabbrev-case-fold-search) | |
390 | (or (not dabbrev-upcase-means-case-search) | |
391 | (string= abbrev (downcase abbrev))))) | |
6163b3ba RS |
392 | (my-obarray dabbrev--last-obarray) |
393 | init) | |
394 | (save-excursion | |
fe0e0a47 LT |
395 | ;;-------------------------------- |
396 | ;; New abbreviation to expand. | |
397 | ;;-------------------------------- | |
398 | (setq dabbrev--last-abbreviation abbrev) | |
399 | ;; Find all expansion | |
400 | (let ((completion-list | |
401 | (dabbrev--find-all-expansions abbrev ignore-case-p)) | |
402 | (completion-ignore-case ignore-case-p)) | |
403 | ;; Make an obarray with all expansions | |
404 | (setq my-obarray (make-vector (length completion-list) 0)) | |
405 | (or (> (length my-obarray) 0) | |
406 | (error "No dynamic expansion for \"%s\" found%s" | |
407 | abbrev | |
408 | (if dabbrev--check-other-buffers "" " in this-buffer"))) | |
409 | (cond | |
410 | ((or (not ignore-case-p) | |
411 | (not dabbrev-case-replace)) | |
412 | (mapc (function (lambda (string) | |
413 | (intern string my-obarray))) | |
414 | completion-list)) | |
415 | ((string= abbrev (upcase abbrev)) | |
416 | (mapc (function (lambda (string) | |
417 | (intern (upcase string) my-obarray))) | |
418 | completion-list)) | |
419 | ((string= (substring abbrev 0 1) | |
420 | (upcase (substring abbrev 0 1))) | |
421 | (mapc (function (lambda (string) | |
422 | (intern (capitalize string) my-obarray))) | |
423 | completion-list)) | |
424 | (t | |
425 | (mapc (function (lambda (string) | |
426 | (intern (downcase string) my-obarray))) | |
427 | completion-list))) | |
428 | (setq dabbrev--last-obarray my-obarray) | |
429 | (setq dabbrev--last-completion-buffer (current-buffer)) | |
430 | ;; Find the longest common string. | |
431 | (setq init (try-completion abbrev my-obarray)))) | |
6163b3ba RS |
432 | ;;-------------------------------- |
433 | ;; Let the user choose between the expansions | |
434 | ;;-------------------------------- | |
435 | (or (stringp init) | |
436 | (setq init abbrev)) | |
437 | (cond | |
438 | ;; * Replace string fragment with matched common substring completion. | |
439 | ((and (not (string-equal init "")) | |
440 | (not (string-equal (downcase init) (downcase abbrev)))) | |
441 | (if (> (length (all-completions init my-obarray)) 1) | |
7313ccdb RS |
442 | (message "Repeat `%s' to see all completions" |
443 | (key-description (this-command-keys))) | |
6163b3ba | 444 | (message "The only possible completion")) |
3ffa545b | 445 | (dabbrev--substitute-expansion nil abbrev init nil)) |
6163b3ba RS |
446 | (t |
447 | ;; * String is a common substring completion already. Make list. | |
448 | (message "Making completion list...") | |
ecd91f5f | 449 | (with-output-to-temp-buffer "*Completions*" |
f5fab556 MY |
450 | (display-completion-list (all-completions init my-obarray) |
451 | init)) | |
7313ccdb | 452 | (message "Making completion list...done"))) |
6163b3ba RS |
453 | (and (window-minibuffer-p (selected-window)) |
454 | (message nil)))) | |
2f790b20 JB |
455 | |
456 | ;;;###autoload | |
457 | (defun dabbrev-expand (arg) | |
458 | "Expand previous word \"dynamically\". | |
2f790b20 | 459 | |
6163b3ba RS |
460 | Expands to the most recent, preceding word for which this is a prefix. |
461 | If no suitable preceding word is found, words following point are | |
462 | considered. If still no suitable word is found, then look in the | |
463 | buffers accepted by the function pointed out by variable | |
464 | `dabbrev-friend-buffer-function'. | |
2f790b20 | 465 | |
7313ccdb | 466 | A positive prefix argument, N, says to take the Nth backward *distinct* |
6163b3ba | 467 | possibility. A negative argument says search forward. |
2f790b20 JB |
468 | |
469 | If the cursor has not moved from the end of the previous expansion and | |
470 | no argument is given, replace the previously-made expansion | |
6163b3ba RS |
471 | with the next possible expansion not yet tried. |
472 | ||
473 | The variable `dabbrev-backward-only' may be used to limit the | |
474 | direction of search to backward if set non-nil. | |
475 | ||
7313ccdb | 476 | See also `dabbrev-abbrev-char-regexp' and \\[dabbrev-completion]." |
2f790b20 | 477 | (interactive "*P") |
dea5efcb RS |
478 | (let (abbrev record-case-pattern |
479 | expansion old direction (orig-point (point))) | |
2f790b20 JB |
480 | ;; abbrev -- the abbrev to expand |
481 | ;; expansion -- the expansion found (eventually) or nil until then | |
482 | ;; old -- the text currently in the buffer | |
483 | ;; (the abbrev, or the previously-made expansion) | |
2f790b20 JB |
484 | (save-excursion |
485 | (if (and (null arg) | |
df6eb420 RS |
486 | (markerp dabbrev--last-abbrev-location) |
487 | (marker-position dabbrev--last-abbrev-location) | |
6163b3ba RS |
488 | (or (eq last-command this-command) |
489 | (and (window-minibuffer-p (selected-window)) | |
490 | (= dabbrev--last-abbrev-location | |
491 | (point))))) | |
7313ccdb | 492 | ;; Find a different expansion for the same abbrev as last time. |
6163b3ba RS |
493 | (progn |
494 | (setq abbrev dabbrev--last-abbreviation) | |
495 | (setq old dabbrev--last-expansion) | |
496 | (setq direction dabbrev--last-direction)) | |
a8a2d6ca KH |
497 | ;; If the user inserts a space after expanding |
498 | ;; and then asks to expand again, always fetch the next word. | |
a6bd541a | 499 | (if (and (eq (preceding-char) ?\s) |
a8a2d6ca KH |
500 | (markerp dabbrev--last-abbrev-location) |
501 | (marker-position dabbrev--last-abbrev-location) | |
502 | (= (point) (1+ dabbrev--last-abbrev-location))) | |
dea5efcb | 503 | (progn |
a8a2d6ca KH |
504 | ;; The "abbrev" to expand is just the space. |
505 | (setq abbrev " ") | |
506 | (save-excursion | |
b9559a72 RS |
507 | (save-restriction |
508 | (widen) | |
509 | (if dabbrev--last-buffer | |
510 | (set-buffer dabbrev--last-buffer)) | |
511 | ;; Find the end of the last "expansion" word. | |
512 | (if (or (eq dabbrev--last-direction 1) | |
513 | (and (eq dabbrev--last-direction 0) | |
514 | (< dabbrev--last-expansion-location (point)))) | |
515 | (setq dabbrev--last-expansion-location | |
516 | (+ dabbrev--last-expansion-location | |
517 | (length dabbrev--last-expansion)))) | |
518 | (goto-char dabbrev--last-expansion-location) | |
519 | ;; Take the following word, with intermediate separators, | |
520 | ;; as our expansion this time. | |
521 | (re-search-forward | |
522 | (concat "\\(?:" dabbrev--abbrev-char-regexp "\\)+")) | |
523 | (setq expansion (buffer-substring-no-properties | |
524 | dabbrev--last-expansion-location (point))) | |
525 | ||
526 | ;; Record the end of this expansion, in case we repeat this. | |
527 | (setq dabbrev--last-expansion-location (point)))) | |
a8a2d6ca KH |
528 | ;; Indicate that dabbrev--last-expansion-location is |
529 | ;; at the end of the expansion. | |
530 | (setq dabbrev--last-direction -1)) | |
531 | ||
532 | ;; We have a different abbrev to expand. | |
533 | (dabbrev--reset-global-variables) | |
534 | (setq direction (if (null arg) | |
535 | (if dabbrev-backward-only 1 0) | |
536 | (prefix-numeric-value arg))) | |
537 | (setq abbrev (dabbrev--abbrev-at-point)) | |
dea5efcb | 538 | (setq record-case-pattern t) |
a8a2d6ca | 539 | (setq old nil))) |
6163b3ba RS |
540 | |
541 | ;;-------------------------------- | |
542 | ;; Find the expansion | |
543 | ;;-------------------------------- | |
a8a2d6ca KH |
544 | (or expansion |
545 | (setq expansion | |
546 | (dabbrev--find-expansion abbrev direction | |
543abb4a RS |
547 | (and (if (eq dabbrev-case-fold-search 'case-fold-search) |
548 | case-fold-search | |
549 | dabbrev-case-fold-search) | |
a8a2d6ca KH |
550 | (or (not dabbrev-upcase-means-case-search) |
551 | (string= abbrev (downcase abbrev)))))))) | |
6163b3ba RS |
552 | (cond |
553 | ((not expansion) | |
554 | (dabbrev--reset-global-variables) | |
555 | (if old | |
556 | (save-excursion | |
4209f479 | 557 | (setq buffer-undo-list (cons orig-point buffer-undo-list)) |
3132e115 RS |
558 | ;; Put back the original abbrev with its original case pattern. |
559 | (search-backward old) | |
560 | (insert abbrev) | |
561 | (delete-region (point) (+ (point) (length old))))) | |
7313ccdb | 562 | (error "No%s dynamic expansion for `%s' found" |
6163b3ba RS |
563 | (if old " further" "") abbrev)) |
564 | (t | |
fdad0f14 GM |
565 | (if (not (or (eq dabbrev--last-buffer dabbrev--last-buffer-found) |
566 | (minibuffer-window-active-p (selected-window)))) | |
2f790b20 | 567 | (progn |
6163b3ba RS |
568 | (message "Expansion found in '%s'" |
569 | (buffer-name dabbrev--last-buffer)) | |
570 | (setq dabbrev--last-buffer-found dabbrev--last-buffer)) | |
571 | (message nil)) | |
a8a2d6ca KH |
572 | (if (and (or (eq (current-buffer) dabbrev--last-buffer) |
573 | (null dabbrev--last-buffer)) | |
574 | (numberp dabbrev--last-expansion-location) | |
575 | (and (> dabbrev--last-expansion-location (point)))) | |
576 | (setq dabbrev--last-expansion-location | |
577 | (copy-marker dabbrev--last-expansion-location))) | |
2f790b20 | 578 | ;; Success: stick it in and return. |
4209f479 | 579 | (setq buffer-undo-list (cons orig-point buffer-undo-list)) |
3ffa545b GM |
580 | (dabbrev--substitute-expansion old abbrev expansion |
581 | record-case-pattern) | |
dea5efcb | 582 | |
2f790b20 | 583 | ;; Save state for re-expand. |
da49057c | 584 | (setq dabbrev--last-expansion expansion) |
6163b3ba RS |
585 | (setq dabbrev--last-abbreviation abbrev) |
586 | (setq dabbrev--last-abbrev-location (point-marker)))))) | |
587 | ||
b578f267 EN |
588 | ;;---------------------------------------------------------------- |
589 | ;; Local functions | |
590 | ;;---------------------------------------------------------------- | |
6163b3ba | 591 | |
6163b3ba RS |
592 | ;;; Checks if OTHER-BUFFER has the same major mode as current buffer. |
593 | (defun dabbrev--same-major-mode-p (other-buffer) | |
7313ccdb RS |
594 | (eq major-mode |
595 | (save-excursion | |
596 | (set-buffer other-buffer) | |
597 | major-mode))) | |
6163b3ba RS |
598 | |
599 | ;;; Back over all abbrev type characters and then moves forward over | |
600 | ;;; all skip characters. | |
601 | (defun dabbrev--goto-start-of-abbrev () | |
602 | ;; Move backwards over abbrev chars | |
603 | (save-match-data | |
b0021416 RS |
604 | (when (> (point) (minibuffer-prompt-end)) |
605 | (forward-char -1) | |
606 | (while (and (looking-at dabbrev--abbrev-char-regexp) | |
607 | (> (point) (minibuffer-prompt-end)) | |
608 | (not (= (point) (field-beginning (point) nil | |
609 | (1- (point)))))) | |
610 | (forward-char -1)) | |
611 | (or (looking-at dabbrev--abbrev-char-regexp) | |
612 | (forward-char 1))) | |
6163b3ba RS |
613 | (and dabbrev-abbrev-skip-leading-regexp |
614 | (while (looking-at dabbrev-abbrev-skip-leading-regexp) | |
615 | (forward-char 1))))) | |
616 | ||
7313ccdb | 617 | ;;; Extract the symbol at point to serve as abbreviation. |
6163b3ba RS |
618 | (defun dabbrev--abbrev-at-point () |
619 | ;; Check for error | |
a8a2d6ca KH |
620 | (if (bobp) |
621 | (error "No possible abbreviation preceding point")) | |
6163b3ba RS |
622 | ;; Return abbrev at point |
623 | (save-excursion | |
a8a2d6ca | 624 | ;; Record the end of the abbreviation. |
6163b3ba | 625 | (setq dabbrev--last-abbrev-location (point)) |
a8a2d6ca KH |
626 | ;; If we aren't right after an abbreviation, |
627 | ;; move point back to just after one. | |
628 | ;; This is so the user can get successive words | |
629 | ;; by typing the punctuation followed by M-/. | |
630 | (save-match-data | |
631 | (if (save-excursion | |
632 | (forward-char -1) | |
633 | (not (looking-at (concat "\\(" | |
634 | (or dabbrev-abbrev-char-regexp | |
635 | "\\sw\\|\\s_") | |
636 | "\\)+")))) | |
637 | (if (re-search-backward (or dabbrev-abbrev-char-regexp | |
638 | "\\sw\\|\\s_") | |
639 | nil t) | |
640 | (forward-char 1) | |
641 | (error "No possible abbreviation preceding point")))) | |
642 | ;; Now find the beginning of that one. | |
643 | (dabbrev--goto-start-of-abbrev) | |
6f0b000c RS |
644 | (buffer-substring-no-properties |
645 | dabbrev--last-abbrev-location (point)))) | |
da49057c | 646 | |
6163b3ba RS |
647 | ;;; Initializes all global variables |
648 | (defun dabbrev--reset-global-variables () | |
649 | ;; dabbrev--last-obarray and dabbrev--last-completion-buffer | |
650 | ;; must not be reset here. | |
651 | (setq dabbrev--last-table nil | |
652 | dabbrev--last-abbreviation nil | |
653 | dabbrev--last-abbrev-location nil | |
654 | dabbrev--last-direction nil | |
655 | dabbrev--last-expansion nil | |
656 | dabbrev--last-expansion-location nil | |
657 | dabbrev--friend-buffer-list nil | |
658 | dabbrev--last-buffer nil | |
659 | dabbrev--last-buffer-found nil | |
660 | dabbrev--abbrev-char-regexp (or dabbrev-abbrev-char-regexp | |
661 | "\\sw\\|\\s_") | |
df6eb420 | 662 | dabbrev--check-other-buffers dabbrev-check-other-buffers)) |
6163b3ba | 663 | |
6163b3ba | 664 | (defun dabbrev--select-buffers () |
513e7954 RS |
665 | "Return a list of other buffers to search for a possible abbrev. |
666 | The current buffer is not included in the list. | |
667 | ||
668 | This function makes a list of all the buffers returned by `buffer-list', | |
669 | then discards buffers whose names match `dabbrev-ignored-buffer-names' | |
670 | or `dabbrev-ignored-buffer-regexps'. It also discards buffers for which | |
671 | `dabbrev-friend-buffer-function', if it is bound, returns nil when called | |
672 | with the buffer as argument. | |
673 | It returns the list of the buffers that are not discarded." | |
674 | (dabbrev-filter-elements | |
675 | buffer (buffer-list) | |
676 | (and (not (eq (current-buffer) buffer)) | |
677 | (not (dabbrev--ignore-buffer-p buffer)) | |
678 | (boundp 'dabbrev-friend-buffer-function) | |
2ebf8f54 | 679 | (funcall dabbrev-friend-buffer-function buffer)))) |
7313ccdb | 680 | |
6163b3ba | 681 | (defun dabbrev--try-find (abbrev reverse n ignore-case) |
fd2dfb40 RS |
682 | "Search for ABBREV, backwards if REVERSE, N times. |
683 | If IGNORE-CASE is non-nil, ignore case while searching. | |
684 | Return the expansion found, and save the location of the start | |
685 | of the expansion in `dabbrev--last-expansion-location'." | |
6163b3ba | 686 | (save-excursion |
df6eb420 RS |
687 | (save-restriction |
688 | (widen) | |
689 | (let ((expansion nil)) | |
690 | (and dabbrev--last-expansion-location | |
691 | (goto-char dabbrev--last-expansion-location)) | |
692 | (let ((case-fold-search ignore-case) | |
693 | (count n)) | |
694 | (while (and (> count 0) | |
695 | (setq expansion (dabbrev--search abbrev | |
696 | reverse | |
93a43334 RS |
697 | (and ignore-case |
698 | (if (eq dabbrev-case-distinction 'case-replace) | |
699 | case-replace | |
700 | dabbrev-case-distinction)) | |
701 | ))) | |
df6eb420 RS |
702 | (setq count (1- count)))) |
703 | (and expansion | |
704 | (setq dabbrev--last-expansion-location (point))) | |
705 | expansion)))) | |
6163b3ba | 706 | |
6163b3ba | 707 | (defun dabbrev--find-all-expansions (abbrev ignore-case) |
fd2dfb40 RS |
708 | "Return a list of all possible expansions of ABBREV. |
709 | If IGNORE-CASE is non-nil, accept matches which differ in case." | |
6163b3ba RS |
710 | (let ((all-expansions nil) |
711 | expansion) | |
712 | (save-excursion | |
713 | (goto-char (point-min)) | |
714 | (while (setq expansion (dabbrev--find-expansion abbrev -1 ignore-case)) | |
df6eb420 | 715 | (setq all-expansions (cons expansion all-expansions)))) |
6163b3ba RS |
716 | all-expansions)) |
717 | ||
a6a06429 MB |
718 | (defun dabbrev--ignore-buffer-p (buffer) |
719 | "Return non-nil if BUFFER should be ignored by dabbrev." | |
720 | (let ((bn (buffer-name buffer))) | |
721 | (or (member bn dabbrev-ignored-buffer-names) | |
722 | (let ((tail dabbrev-ignored-buffer-regexps) | |
723 | (match nil)) | |
724 | (while (and tail (not match)) | |
725 | (setq match (string-match (car tail) bn) | |
726 | tail (cdr tail))) | |
727 | match)))) | |
728 | ||
6163b3ba | 729 | (defun dabbrev--find-expansion (abbrev direction ignore-case) |
fd2dfb40 RS |
730 | "Find one occurrence of ABBREV, and return the expansion. |
731 | DIRECTION > 0 means look that many times backwards. | |
732 | DIRECTION < 0 means look that many times forward. | |
733 | DIRECTION = 0 means try both backward and forward. | |
734 | IGNORE-CASE non-nil means ignore case when searching. | |
735 | This sets `dabbrev--last-direction' to 1 or -1 according | |
736 | to the direction in which the occurrence was actually found. | |
71296446 | 737 | It sets `dabbrev--last-expansion-location' to the location |
fd2dfb40 | 738 | of the start of the occurrence." |
513e7954 RS |
739 | (save-excursion |
740 | ;; If we were scanning something other than the current buffer, | |
741 | ;; continue scanning there. | |
742 | (when dabbrev--last-buffer | |
7daa3523 | 743 | (set-buffer dabbrev--last-buffer)) |
513e7954 RS |
744 | (or |
745 | ;; ------------------------------------------ | |
746 | ;; Look backward in current buffer. | |
747 | ;; ------------------------------------------ | |
748 | (and (not dabbrev-search-these-buffers-only) | |
749 | (>= direction 0) | |
750 | (setq dabbrev--last-direction (min 1 direction)) | |
751 | (dabbrev--try-find abbrev t | |
752 | (max 1 direction) | |
753 | ignore-case)) | |
754 | ;; ------------------------------------------ | |
755 | ;; Look forward in current buffer | |
756 | ;; or whatever buffer we were last scanning. | |
757 | ;; ------------------------------------------ | |
758 | (and (or (not dabbrev-search-these-buffers-only) | |
759 | dabbrev--last-buffer) | |
760 | (<= direction 0) | |
761 | (setq dabbrev--last-direction -1) | |
762 | (dabbrev--try-find abbrev nil | |
763 | (max 1 (- direction)) | |
764 | ignore-case)) | |
765 | ;; ------------------------------------------ | |
766 | ;; Look in other buffers. | |
767 | ;; Always start at (point-min) and look forward. | |
768 | ;; ------------------------------------------ | |
769 | (progn | |
770 | (setq dabbrev--last-direction -1) | |
771 | (unless dabbrev--last-buffer | |
772 | ;; If we have just now begun to search other buffers, | |
773 | ;; determine which other buffers we should check. | |
774 | ;; Put that list in dabbrev--friend-buffer-list. | |
7daa3523 TTN |
775 | (unless dabbrev--friend-buffer-list |
776 | (setq dabbrev--friend-buffer-list | |
777 | (dabbrev--make-friend-buffer-list)) | |
778 | (setq dabbrev--progress-reporter | |
779 | (make-progress-reporter | |
780 | "Scanning for dabbrevs..." | |
781 | (- (length dabbrev--friend-buffer-list)) 0 0 1 1.5)))) | |
513e7954 RS |
782 | ;; Walk through the buffers till we find a match. |
783 | (let (expansion) | |
784 | (while (and (not expansion) dabbrev--friend-buffer-list) | |
2e27ed13 | 785 | (setq dabbrev--last-buffer (pop dabbrev--friend-buffer-list)) |
513e7954 | 786 | (set-buffer dabbrev--last-buffer) |
7daa3523 TTN |
787 | (progress-reporter-update dabbrev--progress-reporter |
788 | (- (length dabbrev--friend-buffer-list))) | |
513e7954 RS |
789 | (setq dabbrev--last-expansion-location (point-min)) |
790 | (setq expansion (dabbrev--try-find abbrev nil 1 ignore-case))) | |
791 | expansion))))) | |
792 | ||
793 | ;; Compute the list of buffers to scan. | |
794 | ;; If dabbrev-search-these-buffers-only, then the current buffer | |
795 | ;; is included in this list if it should be searched. | |
796 | ;; Otherwise, the current buffer is searched first specially., | |
797 | ;; and it is not included in this list. | |
798 | (defun dabbrev--make-friend-buffer-list () | |
799 | (let ((list (mapcar (function get-buffer) | |
800 | dabbrev-search-these-buffers-only))) | |
801 | (when (and (null dabbrev-search-these-buffers-only) | |
802 | dabbrev--check-other-buffers | |
803 | (or (eq dabbrev--check-other-buffers t) | |
804 | (setq dabbrev--check-other-buffers | |
805 | (y-or-n-p "Scan other buffers also? ")))) | |
806 | (setq list (funcall dabbrev-select-buffers-function)) | |
807 | ;; If dabbrev-check-all-buffers, tack on all the other | |
808 | ;; buffers at the end of the list, except those which are | |
809 | ;; specifically to be ignored. | |
810 | (if dabbrev-check-all-buffers | |
811 | (setq list | |
812 | (append list | |
3ffa545b GM |
813 | (dabbrev-filter-elements |
814 | buffer (buffer-list) | |
513e7954 RS |
815 | (and (not (memq buffer list)) |
816 | (not (dabbrev--ignore-buffer-p buffer))))))) | |
817 | ;; Remove the current buffer. | |
818 | (setq list (delq (current-buffer) list))) | |
819 | ;; Move buffers in the list that are visible on the screen | |
820 | ;; to the front of the list, but don't add anything to the list. | |
821 | (if list | |
822 | (walk-windows (lambda (w) | |
823 | (unless (eq w (selected-window)) | |
824 | (if (memq (window-buffer w) list) | |
825 | (setq list | |
826 | (cons (window-buffer w) | |
827 | (delq (window-buffer w) | |
828 | list)))))))) | |
829 | ;; In a minibuffer, search the buffer it was activated from, | |
830 | ;; first after the minibuffer itself. Unless we aren't supposed | |
831 | ;; to search the current buffer either. | |
832 | (if (and (window-minibuffer-p (selected-window)) | |
833 | (not dabbrev-search-these-buffers-only)) | |
834 | (setq list | |
835 | (cons (dabbrev--minibuffer-origin) | |
836 | (delq (dabbrev--minibuffer-origin) list)))) | |
837 | list)) | |
6163b3ba | 838 | |
6163b3ba RS |
839 | (defun dabbrev--safe-replace-match (string &optional fixedcase literal) |
840 | (if (eq major-mode 'picture-mode) | |
6ee55cb1 RS |
841 | (with-no-warnings |
842 | (picture-replace-match string fixedcase literal)) | |
6163b3ba RS |
843 | (replace-match string fixedcase literal))) |
844 | ||
845 | ;;;---------------------------------------------------------------- | |
3ffa545b GM |
846 | (defun dabbrev--substitute-expansion (old abbrev expansion record-case-pattern) |
847 | "Replace OLD with EXPANSION in the buffer. | |
848 | OLD is text currently in the buffer, perhaps the abbreviation | |
849 | or perhaps another expansion that was tried previously. | |
850 | ABBREV is the abbreviation we are expanding. | |
851 | It is \" \" if we are copying subsequent words. | |
852 | EXPANSION is the expansion substring to be used this time. | |
853 | RECORD-CASE-PATTERN, if non-nil, means set `dabbrev--last-case-pattern' | |
854 | to record whether we upcased the expansion, downcased it, or did neither." | |
6163b3ba | 855 | ;;(undo-boundary) |
543abb4a RS |
856 | (let ((use-case-replace (and (if (eq dabbrev-case-fold-search 'case-fold-search) |
857 | case-fold-search | |
858 | dabbrev-case-fold-search) | |
6163b3ba RS |
859 | (or (not dabbrev-upcase-means-case-search) |
860 | (string= abbrev (downcase abbrev))) | |
543abb4a RS |
861 | (if (eq dabbrev-case-replace 'case-replace) |
862 | case-replace | |
863 | dabbrev-case-replace)))) | |
3ffa545b GM |
864 | |
865 | ;; If we upcased or downcased the original expansion, | |
866 | ;; do likewise for the subsequent words when we copy them. | |
fd2dfb40 RS |
867 | ;; Don't do any of the usual case processing, though. |
868 | (when (equal abbrev " ") | |
869 | (if dabbrev--last-case-pattern | |
870 | (setq expansion | |
871 | (funcall dabbrev--last-case-pattern expansion))) | |
872 | (setq use-case-replace nil)) | |
3ffa545b | 873 | |
65411629 RS |
874 | ;; If the expansion has mixed case |
875 | ;; and it is not simply a capitalized word, | |
876 | ;; or if the abbrev has mixed case, | |
877 | ;; and if the given abbrev's case pattern | |
66db4b5b RS |
878 | ;; matches the start of the expansion, |
879 | ;; copy the expansion's case | |
880 | ;; instead of downcasing all the rest. | |
e921af9e RS |
881 | ;; |
882 | ;; Treat a one-capital-letter (possibly with preceding non-letter | |
883 | ;; characters) abbrev as "not all upper case", so as to force | |
884 | ;; preservation of the expansion's pattern if the expansion starts | |
885 | ;; with a capital letter. | |
886 | (let ((expansion-rest (substring expansion 1)) | |
887 | (first-letter-position (string-match "[[:alpha:]]" abbrev))) | |
888 | (if (or (null first-letter-position) | |
889 | (and (not (and (or (string= expansion-rest (downcase expansion-rest)) | |
890 | (string= expansion-rest (upcase expansion-rest))) | |
891 | (or (string= abbrev (downcase abbrev)) | |
892 | (and (string= abbrev (upcase abbrev)) | |
893 | (> (- (length abbrev) first-letter-position) | |
894 | 1))))) | |
895 | (string= abbrev | |
896 | (substring expansion 0 (length abbrev))))) | |
65411629 | 897 | (setq use-case-replace nil))) |
fd2dfb40 RS |
898 | |
899 | ;; If the abbrev and the expansion are both all-lower-case | |
900 | ;; then don't do any conversion. The conversion would be a no-op | |
901 | ;; for this replacement, but it would carry forward to subsequent words. | |
e921af9e | 902 | ;; The goal of this is to prevent that carrying forward. |
fd2dfb40 RS |
903 | (if (and (string= expansion (downcase expansion)) |
904 | (string= abbrev (downcase abbrev))) | |
07e47d0b | 905 | (setq use-case-replace nil)) |
fd2dfb40 | 906 | |
07e47d0b RS |
907 | (if use-case-replace |
908 | (setq expansion (downcase expansion))) | |
3ffa545b GM |
909 | |
910 | ;; In case we insert subsequent words, | |
911 | ;; record if we upcased or downcased the first word, | |
912 | ;; in order to do likewise for subsequent words. | |
913 | (and record-case-pattern | |
71296446 | 914 | (setq dabbrev--last-case-pattern |
3ffa545b GM |
915 | (and use-case-replace |
916 | (cond ((equal abbrev (upcase abbrev)) 'upcase) | |
917 | ((equal abbrev (downcase abbrev)) 'downcase))))) | |
918 | ||
19c17c4e | 919 | ;; Convert whitespace to single spaces. |
e2e75068 RS |
920 | (if dabbrev-eliminate-newlines |
921 | (let ((pos | |
922 | (if (equal abbrev " ") 0 (length abbrev)))) | |
923 | ;; If ABBREV is real, search after the end of it. | |
924 | ;; If ABBREV is space and we are copying successive words, | |
925 | ;; search starting at the front. | |
19c17c4e RS |
926 | (while (string-match "[\n \t]+" expansion pos) |
927 | (setq pos (1+ (match-beginning 0))) | |
928 | (setq expansion (replace-match " " nil nil expansion))))) | |
fd2dfb40 | 929 | |
6163b3ba RS |
930 | (if old |
931 | (save-excursion | |
932 | (search-backward old)) | |
9b7c13e0 | 933 | ;;(set-match-data (list (point-marker) (point-marker))) |
fd2dfb40 RS |
934 | (search-backward abbrev) |
935 | (search-forward abbrev)) | |
936 | ||
6163b3ba RS |
937 | ;; Make case of replacement conform to case of abbreviation |
938 | ;; provided (1) that kind of thing is enabled in this buffer | |
939 | ;; and (2) the replacement itself is all lower case. | |
940 | (dabbrev--safe-replace-match expansion | |
941 | (not use-case-replace) | |
942 | t))) | |
943 | ||
944 | ||
945 | ;;;---------------------------------------------------------------- | |
946 | ;;; Search function used by dabbrevs library. | |
947 | ||
6163b3ba RS |
948 | |
949 | (defun dabbrev--search (abbrev reverse ignore-case) | |
fd2dfb40 RS |
950 | "Search for something that could be used to expand ABBREV. |
951 | ||
952 | Second arg, REVERSE, is t for reverse search, nil for forward. | |
953 | The variable `dabbrev-limit' controls the maximum search region size. | |
954 | Third argument IGNORE-CASE non-nil means treat case as insignificant while | |
955 | looking for a match and when comparing with previous matches. Also if | |
956 | that's non-nil and the match is found at the beginning of a sentence | |
957 | and is in lower case except for the initial then it is converted to | |
958 | all lower case for return. | |
959 | ||
960 | Table of expansions already seen is examined in buffer | |
961 | `dabbrev--last-table' so that only distinct possibilities are found | |
962 | by dabbrev-re-expand. | |
963 | ||
964 | Returns the expansion found, or nil if not found. | |
965 | Leaves point at the location of the start of the expansion." | |
6163b3ba RS |
966 | (save-match-data |
967 | (let ((pattern1 (concat (regexp-quote abbrev) | |
968 | "\\(" dabbrev--abbrev-char-regexp "\\)")) | |
969 | (pattern2 (concat (regexp-quote abbrev) | |
970 | "\\(\\(" dabbrev--abbrev-char-regexp "\\)+\\)")) | |
155133a2 RS |
971 | ;; This makes it possible to find matches in minibuffer prompts |
972 | ;; even when they are "inviolable". | |
973 | (inhibit-point-motion-hooks t) | |
93a43334 | 974 | found-string result) |
6163b3ba RS |
975 | ;; Limited search. |
976 | (save-restriction | |
977 | (and dabbrev-limit | |
978 | (narrow-to-region dabbrev--last-expansion-location | |
979 | (+ (point) | |
980 | (if reverse (- dabbrev-limit) dabbrev-limit)))) | |
981 | ;;-------------------------------- | |
982 | ;; Look for a distinct expansion, using dabbrev--last-table. | |
983 | ;;-------------------------------- | |
984 | (while (and (not found-string) | |
985 | (if reverse | |
986 | (re-search-backward pattern1 nil t) | |
987 | (re-search-forward pattern1 nil t))) | |
63d991d6 KH |
988 | (goto-char (match-beginning 0)) |
989 | ;; In case we matched in the middle of a word, | |
990 | ;; back up to start of word and verify we still match. | |
991 | (dabbrev--goto-start-of-abbrev) | |
992 | ||
993 | (if (not (looking-at pattern1)) | |
994 | nil | |
995 | ;; We have a truly valid match. Find the end. | |
6163b3ba | 996 | (re-search-forward pattern2) |
2e27ed13 | 997 | (setq found-string (match-string-no-properties 0)) |
93a43334 | 998 | (setq result found-string) |
6163b3ba | 999 | (and ignore-case (setq found-string (downcase found-string))) |
63d991d6 | 1000 | ;; Ignore this match if it's already in the table. |
7313ccdb RS |
1001 | (if (dabbrev-filter-elements |
1002 | table-string dabbrev--last-table | |
1003 | (string= found-string table-string)) | |
63d991d6 KH |
1004 | (setq found-string nil))) |
1005 | ;; Prepare to continue searching. | |
2e27ed13 | 1006 | (goto-char (if reverse (match-beginning 0) (match-end 0)))) |
63d991d6 | 1007 | ;; If we found something, use it. |
93a43334 RS |
1008 | (when found-string |
1009 | ;; Put it into `dabbrev--last-table' | |
1010 | ;; and return it (either downcased, or as is). | |
1011 | (setq dabbrev--last-table | |
1012 | (cons found-string dabbrev--last-table)) | |
1013 | result))))) | |
6163b3ba | 1014 | |
df27f31f | 1015 | (dolist (mess '("^No dynamic expansion for .* found" |
87207d14 DL |
1016 | "^No further dynamic expansion for .* found$" |
1017 | "^No possible abbreviation preceding point$")) | |
1018 | (add-to-list 'debug-ignored-errors mess)) | |
1019 | ||
01987a6b | 1020 | (provide 'dabbrev) |
7313ccdb | 1021 | |
cbee283d | 1022 | ;; arch-tag: 29e58596-f080-4306-a409-70296cf9d46f |
b578f267 | 1023 | ;;; dabbrev.el ends here |