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23f87bed | 1 | ;;; gnus-cite.el --- parse citations in articles for Gnus |
eec82323 | 2 | |
e84b4b86 | 3 | ;; Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, |
d7a0267c | 4 | ;; 2004, 2005, 2006, 2007 Free Software Foundation, Inc. |
16409b0b GM |
5 | |
6 | ;; Author: Per Abhiddenware | |
7 | ||
8 | ;; This file is part of GNU Emacs. | |
9 | ||
10 | ;; GNU Emacs is free software; you can redistribute it and/or modify | |
eec82323 LMI |
11 | ;; it under the terms of the GNU General Public License as published by |
12 | ;; the Free Software Foundation; either version 2, or (at your option) | |
13 | ;; any later version. | |
14 | ||
15 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
16 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | ;; GNU General Public License for more details. | |
19 | ||
20 | ;; You should have received a copy of the GNU General Public License | |
21 | ;; along with GNU Emacs; see the file COPYING. If not, write to the | |
3a35cf56 LK |
22 | ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
23 | ;; Boston, MA 02110-1301, USA. | |
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24 | |
25 | ;;; Commentary: | |
26 | ||
27 | ;;; Code: | |
28 | ||
5ab7173c RS |
29 | (eval-when-compile (require 'cl)) |
30 | ||
eec82323 | 31 | (require 'gnus) |
eec82323 | 32 | (require 'gnus-range) |
23f87bed MB |
33 | (require 'gnus-art) |
34 | (require 'message) ; for message-cite-prefix-regexp | |
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35 | |
36 | ;;; Customization: | |
37 | ||
38 | (defgroup gnus-cite nil | |
39 | "Citation." | |
40 | :prefix "gnus-cite-" | |
41 | :link '(custom-manual "(gnus)Article Highlighting") | |
42 | :group 'gnus-article) | |
43 | ||
6748645f LMI |
44 | (defcustom gnus-cited-opened-text-button-line-format "%(%{[-]%}%)\n" |
45 | "Format of opened cited text buttons." | |
46 | :group 'gnus-cite | |
47 | :type 'string) | |
48 | ||
49 | (defcustom gnus-cited-closed-text-button-line-format "%(%{[+]%}%)\n" | |
50 | "Format of closed cited text buttons." | |
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51 | :group 'gnus-cite |
52 | :type 'string) | |
53 | ||
54 | (defcustom gnus-cited-lines-visible nil | |
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55 | "The number of lines of hidden cited text to remain visible. |
56 | Or a pair (cons) of numbers which are the number of lines at the top | |
57 | and bottom of the text, respectively, to remain visible." | |
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58 | :group 'gnus-cite |
59 | :type '(choice (const :tag "none" nil) | |
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60 | integer |
61 | (cons :tag "Top and Bottom" integer integer))) | |
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62 | |
63 | (defcustom gnus-cite-parse-max-size 25000 | |
64 | "Maximum article size (in bytes) where parsing citations is allowed. | |
65 | Set it to nil to parse all articles." | |
66 | :group 'gnus-cite | |
67 | :type '(choice (const :tag "all" nil) | |
68 | integer)) | |
69 | ||
eec82323 LMI |
70 | (defcustom gnus-cite-max-prefix 20 |
71 | "Maximum possible length for a citation prefix." | |
72 | :group 'gnus-cite | |
73 | :type 'integer) | |
74 | ||
75 | (defcustom gnus-supercite-regexp | |
23f87bed | 76 | (concat "^\\(" message-cite-prefix-regexp "\\)? *" |
eec82323 | 77 | ">>>>> +\"\\([^\"\n]+\\)\" +==") |
6748645f | 78 | "*Regexp matching normal Supercite attribution lines. |
eec82323 LMI |
79 | The first grouping must match prefixes added by other packages." |
80 | :group 'gnus-cite | |
81 | :type 'regexp) | |
82 | ||
83 | (defcustom gnus-supercite-secondary-regexp "^.*\"\\([^\"\n]+\\)\" +==" | |
84 | "Regexp matching mangled Supercite attribution lines. | |
85 | The first regexp group should match the Supercite attribution." | |
86 | :group 'gnus-cite | |
87 | :type 'regexp) | |
88 | ||
89 | (defcustom gnus-cite-minimum-match-count 2 | |
90 | "Minimum number of identical prefixes before we believe it's a citation." | |
91 | :group 'gnus-cite | |
92 | :type 'integer) | |
93 | ||
23f87bed MB |
94 | ;; Some Microsoft products put in a citation that extends to the |
95 | ;; remainder of the message: | |
96 | ;; | |
97 | ;; -----Original Message----- | |
98 | ;; From: ... | |
99 | ;; To: ... | |
100 | ;; Sent: ... [date, in non-RFC-2822 format] | |
101 | ;; Subject: ... | |
102 | ;; | |
103 | ;; Cited message, with no prefixes | |
104 | ;; | |
105 | ;; The four headers are always the same. But note they are prone to | |
106 | ;; folding without additional indentation. | |
107 | ;; | |
108 | ;; Others use "----- Original Message -----" instead, and properly quote | |
109 | ;; the body using "> ". This style is handled without special cases. | |
110 | ||
6748645f | 111 | (defcustom gnus-cite-attribution-prefix |
23f87bed | 112 | "In article\\|in <\\|On \\(Mon\\|Tue\\|Wed\\|Thu\\|Fri\\|Sat\\|Sun\\),\\|----- ?Original Message ?-----" |
6748645f | 113 | "*Regexp matching the beginning of an attribution line." |
eec82323 LMI |
114 | :group 'gnus-cite |
115 | :type 'regexp) | |
116 | ||
117 | (defcustom gnus-cite-attribution-suffix | |
23f87bed | 118 | "\\(\\(wrote\\|writes\\|said\\|says\\|>\\)\\(:\\|\\.\\.\\.\\)\\|----- ?Original Message ?-----\\)[ \t]*$" |
6748645f | 119 | "*Regexp matching the end of an attribution line. |
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120 | The text matching the first grouping will be used as a button." |
121 | :group 'gnus-cite | |
122 | :type 'regexp) | |
123 | ||
23f87bed MB |
124 | (defcustom gnus-cite-unsightly-citation-regexp |
125 | "^-----Original Message-----\nFrom: \\(.+\n\\)+\n" | |
126 | "Regexp matching Microsoft-type rest-of-message citations." | |
bf247b6e | 127 | :version "22.1" |
23f87bed MB |
128 | :group 'gnus-cite |
129 | :type 'regexp) | |
130 | ||
131 | (defcustom gnus-cite-ignore-quoted-from t | |
132 | "Non-nil means don't regard lines beginning with \">From \" as cited text. | |
133 | Those lines may have been quoted by MTAs in order not to mix up with | |
134 | the envelope From line." | |
bf247b6e | 135 | :version "22.1" |
23f87bed MB |
136 | :group 'gnus-cite |
137 | :type 'boolean) | |
138 | ||
0f49874b | 139 | (defface gnus-cite-attribution '((t (:italic t))) |
d0859c9a MB |
140 | "Face used for attribution lines." |
141 | :group 'gnus-cite) | |
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142 | ;; backward-compatibility alias |
143 | (put 'gnus-cite-attribution-face 'face-alias 'gnus-cite-attribution) | |
eec82323 | 144 | |
0f49874b | 145 | (defcustom gnus-cite-attribution-face 'gnus-cite-attribution |
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146 | "Face used for attribution lines. |
147 | It is merged with the face for the cited text belonging to the attribution." | |
bf247b6e | 148 | :version "22.1" |
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149 | :group 'gnus-cite |
150 | :type 'face) | |
151 | ||
0f49874b MB |
152 | (defface gnus-cite-1 '((((class color) |
153 | (background dark)) | |
154 | (:foreground "light blue")) | |
155 | (((class color) | |
156 | (background light)) | |
157 | (:foreground "MidnightBlue")) | |
158 | (t | |
159 | (:italic t))) | |
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160 | "Citation face." |
161 | :group 'gnus-cite) | |
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162 | ;; backward-compatibility alias |
163 | (put 'gnus-cite-face-1 'face-alias 'gnus-cite-1) | |
164 | ||
165 | (defface gnus-cite-2 '((((class color) | |
166 | (background dark)) | |
167 | (:foreground "light cyan")) | |
168 | (((class color) | |
169 | (background light)) | |
170 | (:foreground "firebrick")) | |
171 | (t | |
172 | (:italic t))) | |
d0859c9a MB |
173 | "Citation face." |
174 | :group 'gnus-cite) | |
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175 | ;; backward-compatibility alias |
176 | (put 'gnus-cite-face-2 'face-alias 'gnus-cite-2) | |
177 | ||
178 | (defface gnus-cite-3 '((((class color) | |
179 | (background dark)) | |
180 | (:foreground "light yellow")) | |
181 | (((class color) | |
182 | (background light)) | |
183 | (:foreground "dark green")) | |
184 | (t | |
185 | (:italic t))) | |
d0859c9a MB |
186 | "Citation face." |
187 | :group 'gnus-cite) | |
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188 | ;; backward-compatibility alias |
189 | (put 'gnus-cite-face-3 'face-alias 'gnus-cite-3) | |
190 | ||
191 | (defface gnus-cite-4 '((((class color) | |
192 | (background dark)) | |
193 | (:foreground "light pink")) | |
194 | (((class color) | |
195 | (background light)) | |
196 | (:foreground "OrangeRed")) | |
197 | (t | |
198 | (:italic t))) | |
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199 | "Citation face." |
200 | :group 'gnus-cite) | |
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201 | ;; backward-compatibility alias |
202 | (put 'gnus-cite-face-4 'face-alias 'gnus-cite-4) | |
203 | ||
204 | (defface gnus-cite-5 '((((class color) | |
205 | (background dark)) | |
206 | (:foreground "pale green")) | |
207 | (((class color) | |
208 | (background light)) | |
209 | (:foreground "dark khaki")) | |
210 | (t | |
211 | (:italic t))) | |
d0859c9a MB |
212 | "Citation face." |
213 | :group 'gnus-cite) | |
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214 | ;; backward-compatibility alias |
215 | (put 'gnus-cite-face-5 'face-alias 'gnus-cite-5) | |
216 | ||
217 | (defface gnus-cite-6 '((((class color) | |
218 | (background dark)) | |
219 | (:foreground "beige")) | |
220 | (((class color) | |
221 | (background light)) | |
222 | (:foreground "dark violet")) | |
223 | (t | |
224 | (:italic t))) | |
d0859c9a MB |
225 | "Citation face." |
226 | :group 'gnus-cite) | |
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227 | ;; backward-compatibility alias |
228 | (put 'gnus-cite-face-6 'face-alias 'gnus-cite-6) | |
229 | ||
230 | (defface gnus-cite-7 '((((class color) | |
231 | (background dark)) | |
232 | (:foreground "orange")) | |
233 | (((class color) | |
234 | (background light)) | |
235 | (:foreground "SteelBlue4")) | |
236 | (t | |
237 | (:italic t))) | |
d0859c9a MB |
238 | "Citation face." |
239 | :group 'gnus-cite) | |
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240 | ;; backward-compatibility alias |
241 | (put 'gnus-cite-face-7 'face-alias 'gnus-cite-7) | |
242 | ||
243 | (defface gnus-cite-8 '((((class color) | |
244 | (background dark)) | |
245 | (:foreground "magenta")) | |
246 | (((class color) | |
247 | (background light)) | |
248 | (:foreground "magenta")) | |
249 | (t | |
250 | (:italic t))) | |
d0859c9a MB |
251 | "Citation face." |
252 | :group 'gnus-cite) | |
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253 | ;; backward-compatibility alias |
254 | (put 'gnus-cite-face-8 'face-alias 'gnus-cite-8) | |
255 | ||
256 | (defface gnus-cite-9 '((((class color) | |
257 | (background dark)) | |
258 | (:foreground "violet")) | |
259 | (((class color) | |
260 | (background light)) | |
261 | (:foreground "violet")) | |
262 | (t | |
263 | (:italic t))) | |
d0859c9a MB |
264 | "Citation face." |
265 | :group 'gnus-cite) | |
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266 | ;; backward-compatibility alias |
267 | (put 'gnus-cite-face-9 'face-alias 'gnus-cite-9) | |
268 | ||
269 | (defface gnus-cite-10 '((((class color) | |
270 | (background dark)) | |
271 | (:foreground "medium purple")) | |
272 | (((class color) | |
273 | (background light)) | |
274 | (:foreground "medium purple")) | |
275 | (t | |
276 | (:italic t))) | |
d0859c9a MB |
277 | "Citation face." |
278 | :group 'gnus-cite) | |
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279 | ;; backward-compatibility alias |
280 | (put 'gnus-cite-face-10 'face-alias 'gnus-cite-10) | |
281 | ||
282 | (defface gnus-cite-11 '((((class color) | |
283 | (background dark)) | |
284 | (:foreground "turquoise")) | |
285 | (((class color) | |
286 | (background light)) | |
287 | (:foreground "turquoise")) | |
288 | (t | |
289 | (:italic t))) | |
d0859c9a MB |
290 | "Citation face." |
291 | :group 'gnus-cite) | |
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292 | ;; backward-compatibility alias |
293 | (put 'gnus-cite-face-11 'face-alias 'gnus-cite-11) | |
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294 | |
295 | (defcustom gnus-cite-face-list | |
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296 | '(gnus-cite-1 gnus-cite-2 gnus-cite-3 gnus-cite-4 gnus-cite-5 gnus-cite-6 |
297 | gnus-cite-7 gnus-cite-8 gnus-cite-9 gnus-cite-10 gnus-cite-11) | |
6748645f | 298 | "*List of faces used for highlighting citations. |
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299 | |
300 | When there are citations from multiple articles in the same message, | |
301 | Gnus will try to give each citation from each article its own face. | |
302 | This should make it easier to see who wrote what." | |
303 | :group 'gnus-cite | |
304 | :type '(repeat face)) | |
305 | ||
306 | (defcustom gnus-cite-hide-percentage 50 | |
307 | "Only hide excess citation if above this percentage of the body." | |
308 | :group 'gnus-cite | |
309 | :type 'number) | |
310 | ||
311 | (defcustom gnus-cite-hide-absolute 10 | |
312 | "Only hide excess citation if above this number of lines in the body." | |
313 | :group 'gnus-cite | |
314 | :type 'integer) | |
315 | ||
eb1666e2 MB |
316 | (defcustom gnus-cite-blank-line-after-header t |
317 | "If non-nil, put a blank line between the citation header and the button." | |
318 | :group 'gnus-cite | |
319 | :type 'boolean) | |
320 | ||
23f87bed MB |
321 | ;; This has to go here because its default value depends on |
322 | ;; gnus-cite-face-list. | |
0f49874b | 323 | (defcustom gnus-article-boring-faces (cons 'gnus-signature gnus-cite-face-list) |
23f87bed MB |
324 | "List of faces that are not worth reading. |
325 | If an article has more pages below the one you are looking at, but | |
326 | nothing on those pages is a word of at least three letters that is not | |
327 | in a boring face, then the pages will be skipped." | |
328 | :type '(repeat face) | |
329 | :group 'gnus-article-hiding) | |
330 | ||
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331 | ;;; Internal Variables: |
332 | ||
333 | (defvar gnus-cite-article nil) | |
6748645f | 334 | (defvar gnus-cite-overlay-list nil) |
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335 | |
336 | (defvar gnus-cite-prefix-alist nil) | |
337 | ;; Alist of citation prefixes. | |
338 | ;; The cdr is a list of lines with that prefix. | |
339 | ||
340 | (defvar gnus-cite-attribution-alist nil) | |
341 | ;; Alist of attribution lines. | |
342 | ;; The car is a line number. | |
343 | ;; The cdr is the prefix for the citation started by that line. | |
344 | ||
345 | (defvar gnus-cite-loose-prefix-alist nil) | |
346 | ;; Alist of citation prefixes that have no matching attribution. | |
347 | ;; The cdr is a list of lines with that prefix. | |
348 | ||
349 | (defvar gnus-cite-loose-attribution-alist nil) | |
350 | ;; Alist of attribution lines that have no matching citation. | |
351 | ;; Each member has the form (WROTE IN PREFIX TAG), where | |
352 | ;; WROTE: is the attribution line number | |
353 | ;; IN: is the line number of the previous line if part of the same attribution, | |
354 | ;; PREFIX: Is the citation prefix of the attribution line(s), and | |
355 | ;; TAG: Is a Supercite tag, if any. | |
356 | ||
6748645f | 357 | (defvar gnus-cited-opened-text-button-line-format-alist |
eec82323 LMI |
358 | `((?b (marker-position beg) ?d) |
359 | (?e (marker-position end) ?d) | |
6748645f | 360 | (?n (count-lines beg end) ?d) |
eec82323 | 361 | (?l (- end beg) ?d))) |
6748645f LMI |
362 | (defvar gnus-cited-opened-text-button-line-format-spec nil) |
363 | (defvar gnus-cited-closed-text-button-line-format-alist | |
364 | gnus-cited-opened-text-button-line-format-alist) | |
365 | (defvar gnus-cited-closed-text-button-line-format-spec nil) | |
366 | ||
eec82323 LMI |
367 | |
368 | ;;; Commands: | |
369 | ||
370 | (defun gnus-article-highlight-citation (&optional force) | |
371 | "Highlight cited text. | |
372 | Each citation in the article will be highlighted with a different face. | |
373 | The faces are taken from `gnus-cite-face-list'. | |
374 | Attribution lines are highlighted with the same face as the | |
0f49874b | 375 | corresponding citation merged with the face `gnus-cite-attribution'. |
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376 | |
377 | Text is considered cited if at least `gnus-cite-minimum-match-count' | |
23f87bed | 378 | lines matches `message-cite-prefix-regexp' with the same prefix. |
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379 | |
380 | Lines matching `gnus-cite-attribution-suffix' and perhaps | |
381 | `gnus-cite-attribution-prefix' are considered attribution lines." | |
382 | (interactive (list 'force)) | |
383 | (save-excursion | |
384 | (set-buffer gnus-article-buffer) | |
385 | (gnus-cite-parse-maybe force) | |
386 | (let ((buffer-read-only nil) | |
387 | (alist gnus-cite-prefix-alist) | |
388 | (faces gnus-cite-face-list) | |
389 | (inhibit-point-motion-hooks t) | |
390 | face entry prefix skip numbers number face-alist) | |
391 | ;; Loop through citation prefixes. | |
392 | (while alist | |
393 | (setq entry (car alist) | |
394 | alist (cdr alist) | |
395 | prefix (car entry) | |
396 | numbers (cdr entry) | |
397 | face (car faces) | |
398 | faces (or (cdr faces) gnus-cite-face-list) | |
399 | face-alist (cons (cons prefix face) face-alist)) | |
400 | (while numbers | |
401 | (setq number (car numbers) | |
402 | numbers (cdr numbers)) | |
403 | (and (not (assq number gnus-cite-attribution-alist)) | |
404 | (not (assq number gnus-cite-loose-attribution-alist)) | |
405 | (gnus-cite-add-face number prefix face)))) | |
406 | ;; Loop through attribution lines. | |
407 | (setq alist gnus-cite-attribution-alist) | |
408 | (while alist | |
409 | (setq entry (car alist) | |
410 | alist (cdr alist) | |
411 | number (car entry) | |
412 | prefix (cdr entry) | |
413 | skip (gnus-cite-find-prefix number) | |
414 | face (cdr (assoc prefix face-alist))) | |
415 | ;; Add attribution button. | |
16409b0b GM |
416 | (goto-char (point-min)) |
417 | (forward-line (1- number)) | |
eec82323 | 418 | (when (re-search-forward gnus-cite-attribution-suffix |
23f87bed | 419 | (gnus-point-at-eol) |
eec82323 LMI |
420 | t) |
421 | (gnus-article-add-button (match-beginning 1) (match-end 1) | |
422 | 'gnus-cite-toggle prefix)) | |
423 | ;; Highlight attribution line. | |
424 | (gnus-cite-add-face number skip face) | |
425 | (gnus-cite-add-face number skip gnus-cite-attribution-face)) | |
426 | ;; Loop through attribution lines. | |
427 | (setq alist gnus-cite-loose-attribution-alist) | |
428 | (while alist | |
429 | (setq entry (car alist) | |
430 | alist (cdr alist) | |
431 | number (car entry) | |
432 | skip (gnus-cite-find-prefix number)) | |
433 | (gnus-cite-add-face number skip gnus-cite-attribution-face))))) | |
434 | ||
435 | (defun gnus-dissect-cited-text () | |
436 | "Dissect the article buffer looking for cited text." | |
437 | (save-excursion | |
438 | (set-buffer gnus-article-buffer) | |
16409b0b | 439 | (gnus-cite-parse-maybe nil t) |
eec82323 LMI |
440 | (let ((alist gnus-cite-prefix-alist) |
441 | prefix numbers number marks m) | |
442 | ;; Loop through citation prefixes. | |
443 | (while alist | |
444 | (setq numbers (pop alist) | |
445 | prefix (pop numbers)) | |
446 | (while numbers | |
447 | (setq number (pop numbers)) | |
448 | (goto-char (point-min)) | |
449 | (forward-line number) | |
450 | (push (cons (point-marker) "") marks) | |
451 | (while (and numbers | |
452 | (= (1- number) (car numbers))) | |
453 | (setq number (pop numbers))) | |
454 | (goto-char (point-min)) | |
455 | (forward-line (1- number)) | |
456 | (push (cons (point-marker) prefix) marks))) | |
457 | ;; Skip to the beginning of the body. | |
16409b0b | 458 | (article-goto-body) |
eec82323 LMI |
459 | (push (cons (point-marker) "") marks) |
460 | ;; Find the end of the body. | |
461 | (goto-char (point-max)) | |
462 | (gnus-article-search-signature) | |
463 | (push (cons (point-marker) "") marks) | |
464 | ;; Sort the marks. | |
6748645f | 465 | (setq marks (sort marks 'car-less-than-car)) |
eec82323 LMI |
466 | (let ((omarks marks)) |
467 | (setq marks nil) | |
468 | (while (cdr omarks) | |
469 | (if (= (caar omarks) (caadr omarks)) | |
470 | (progn | |
471 | (unless (equal (cdar omarks) "") | |
472 | (push (car omarks) marks)) | |
473 | (unless (equal (cdadr omarks) "") | |
474 | (push (cadr omarks) marks)) | |
475 | (unless (and (equal (cdar omarks) "") | |
476 | (equal (cdadr omarks) "") | |
477 | (not (cddr omarks))) | |
478 | (setq omarks (cdr omarks)))) | |
479 | (push (car omarks) marks)) | |
480 | (setq omarks (cdr omarks))) | |
481 | (when (car omarks) | |
482 | (push (car omarks) marks)) | |
483 | (setq marks (setq m (nreverse marks))) | |
484 | (while (cddr m) | |
485 | (if (and (equal (cdadr m) "") | |
486 | (equal (cdar m) (cdaddr m)) | |
487 | (goto-char (caadr m)) | |
488 | (forward-line 1) | |
489 | (= (point) (caaddr m))) | |
490 | (setcdr m (cdddr m)) | |
491 | (setq m (cdr m)))) | |
492 | marks)))) | |
493 | ||
494 | (defun gnus-article-fill-cited-article (&optional force width) | |
495 | "Do word wrapping in the current article. | |
496 | If WIDTH (the numerical prefix), use that text width when filling." | |
497 | (interactive (list t current-prefix-arg)) | |
498 | (save-excursion | |
499 | (set-buffer gnus-article-buffer) | |
500 | (let ((buffer-read-only nil) | |
501 | (inhibit-point-motion-hooks t) | |
502 | (marks (gnus-dissect-cited-text)) | |
503 | (adaptive-fill-mode nil) | |
504 | (filladapt-mode nil) | |
505 | (fill-column (if width (prefix-numeric-value width) fill-column))) | |
506 | (save-restriction | |
507 | (while (cdr marks) | |
eec82323 LMI |
508 | (narrow-to-region (caar marks) (caadr marks)) |
509 | (let ((adaptive-fill-regexp | |
510 | (concat "^" (regexp-quote (cdar marks)) " *")) | |
23f87bed MB |
511 | (fill-prefix |
512 | (if (string= (cdar marks) "") "" | |
513 | (concat (cdar marks) " "))) | |
514 | use-hard-newlines) | |
eec82323 LMI |
515 | (fill-region (point-min) (point-max))) |
516 | (set-marker (caar marks) nil) | |
517 | (setq marks (cdr marks))) | |
518 | (when marks | |
519 | (set-marker (caar marks) nil)) | |
520 | ;; All this information is now incorrect. | |
521 | (setq gnus-cite-prefix-alist nil | |
522 | gnus-cite-attribution-alist nil | |
523 | gnus-cite-loose-prefix-alist nil | |
a8151ef7 LMI |
524 | gnus-cite-loose-attribution-alist nil |
525 | gnus-cite-article nil))))) | |
eec82323 LMI |
526 | |
527 | (defun gnus-article-hide-citation (&optional arg force) | |
528 | "Toggle hiding of all cited text except attribution lines. | |
529 | See the documentation for `gnus-article-highlight-citation'. | |
530 | If given a negative prefix, always show; if given a positive prefix, | |
531 | always hide." | |
532 | (interactive (append (gnus-article-hidden-arg) (list 'force))) | |
6748645f LMI |
533 | (gnus-set-format 'cited-opened-text-button t) |
534 | (gnus-set-format 'cited-closed-text-button t) | |
eec82323 LMI |
535 | (save-excursion |
536 | (set-buffer gnus-article-buffer) | |
eec82323 | 537 | (let ((buffer-read-only nil) |
520aa572 | 538 | marks |
eec82323 LMI |
539 | (inhibit-point-motion-hooks t) |
540 | (props (nconc (list 'article-type 'cite) | |
541 | gnus-hidden-properties)) | |
520aa572 SZ |
542 | (point (point-min)) |
543 | found beg end start) | |
a1506d29 JB |
544 | (while (setq point |
545 | (text-property-any point (point-max) | |
520aa572 SZ |
546 | 'gnus-callback |
547 | 'gnus-article-toggle-cited-text)) | |
548 | (setq found t) | |
549 | (goto-char point) | |
550 | (gnus-article-toggle-cited-text | |
551 | (get-text-property point 'gnus-data) arg) | |
552 | (forward-line 1) | |
553 | (setq point (point))) | |
554 | (unless found | |
555 | (setq marks (gnus-dissect-cited-text)) | |
556 | (while marks | |
557 | (setq beg nil | |
558 | end nil) | |
559 | (while (and marks (string= (cdar marks) "")) | |
560 | (setq marks (cdr marks))) | |
561 | (when marks | |
562 | (setq beg (caar marks))) | |
563 | (while (and marks (not (string= (cdar marks) ""))) | |
564 | (setq marks (cdr marks))) | |
565 | (when marks | |
eec82323 | 566 | (setq end (caar marks))) |
520aa572 SZ |
567 | ;; Skip past lines we want to leave visible. |
568 | (when (and beg end gnus-cited-lines-visible) | |
569 | (goto-char beg) | |
570 | (forward-line (if (consp gnus-cited-lines-visible) | |
571 | (car gnus-cited-lines-visible) | |
572 | gnus-cited-lines-visible)) | |
573 | (if (>= (point) end) | |
574 | (setq beg nil) | |
575 | (setq beg (point-marker)) | |
576 | (when (consp gnus-cited-lines-visible) | |
577 | (goto-char end) | |
578 | (forward-line (- (cdr gnus-cited-lines-visible))) | |
579 | (if (<= (point) beg) | |
580 | (setq beg nil) | |
16409b0b | 581 | (setq end (point-marker)))))) |
520aa572 | 582 | (when (and beg end) |
23f87bed | 583 | (gnus-add-wash-type 'cite) |
520aa572 SZ |
584 | ;; We use markers for the end-points to facilitate later |
585 | ;; wrapping and mangling of text. | |
586 | (setq beg (set-marker (make-marker) beg) | |
587 | end (set-marker (make-marker) end)) | |
588 | (gnus-add-text-properties-when 'article-type nil beg end props) | |
589 | (goto-char beg) | |
eb1666e2 MB |
590 | (when (and gnus-cite-blank-line-after-header |
591 | (not (save-excursion (search-backward "\n\n" nil t)))) | |
520aa572 SZ |
592 | (insert "\n")) |
593 | (put-text-property | |
594 | (setq start (point-marker)) | |
595 | (progn | |
eec82323 LMI |
596 | (gnus-article-add-button |
597 | (point) | |
6748645f LMI |
598 | (progn (eval gnus-cited-closed-text-button-line-format-spec) |
599 | (point)) | |
600 | `gnus-article-toggle-cited-text | |
601 | (list (cons beg end) start)) | |
eec82323 | 602 | (point)) |
520aa572 SZ |
603 | 'article-type 'annotation) |
604 | (set-marker beg (point)))))))) | |
eec82323 | 605 | |
520aa572 SZ |
606 | (defun gnus-article-toggle-cited-text (args &optional arg) |
607 | "Toggle hiding the text in REGION. | |
608 | ARG can be nil or a number. Positive means hide, negative | |
609 | means show, nil means toggle." | |
6748645f | 610 | (let* ((region (car args)) |
16409b0b GM |
611 | (beg (car region)) |
612 | (end (cdr region)) | |
6748645f LMI |
613 | (start (cadr args)) |
614 | (hidden | |
520aa572 | 615 | (text-property-any beg (1- end) 'article-type 'cite)) |
6748645f LMI |
616 | (inhibit-point-motion-hooks t) |
617 | buffer-read-only) | |
520aa572 SZ |
618 | (when (or (null arg) |
619 | (zerop arg) | |
620 | (and (> arg 0) (not hidden)) | |
621 | (and (< arg 0) hidden)) | |
622 | (if hidden | |
23f87bed MB |
623 | (progn |
624 | ;; Can't remove 'cite from g-a-wash-types here because | |
625 | ;; multiple citations may be hidden -jas | |
626 | (gnus-remove-text-properties-when | |
627 | 'article-type 'cite beg end | |
628 | (cons 'article-type (cons 'cite | |
629 | gnus-hidden-properties)))) | |
630 | (gnus-add-wash-type 'cite) | |
520aa572 | 631 | (gnus-add-text-properties-when |
a1506d29 | 632 | 'article-type nil beg end |
520aa572 SZ |
633 | (cons 'article-type (cons 'cite |
634 | gnus-hidden-properties)))) | |
23f87bed MB |
635 | (let ((gnus-article-mime-handle-alist-1 gnus-article-mime-handle-alist)) |
636 | (gnus-set-mode-line 'article)) | |
520aa572 SZ |
637 | (save-excursion |
638 | (goto-char start) | |
639 | (gnus-delete-line) | |
640 | (put-text-property | |
641 | (point) | |
642 | (progn | |
643 | (gnus-article-add-button | |
644 | (point) | |
645 | (progn (eval | |
646 | (if hidden | |
647 | gnus-cited-opened-text-button-line-format-spec | |
648 | gnus-cited-closed-text-button-line-format-spec)) | |
649 | (point)) | |
650 | `gnus-article-toggle-cited-text | |
651 | args) | |
652 | (point)) | |
653 | 'article-type 'annotation))))) | |
eec82323 LMI |
654 | |
655 | (defun gnus-article-hide-citation-maybe (&optional arg force) | |
656 | "Toggle hiding of cited text that has an attribution line. | |
657 | If given a negative prefix, always show; if given a positive prefix, | |
658 | always hide. | |
659 | This will do nothing unless at least `gnus-cite-hide-percentage' | |
660 | percent and at least `gnus-cite-hide-absolute' lines of the body is | |
661 | cited text with attributions. When called interactively, these two | |
662 | variables are ignored. | |
663 | See also the documentation for `gnus-article-highlight-citation'." | |
6748645f | 664 | (interactive (append (gnus-article-hidden-arg) '(force))) |
23f87bed MB |
665 | (with-current-buffer gnus-article-buffer |
666 | (gnus-delete-wash-type 'cite) | |
667 | (unless (gnus-article-check-hidden-text 'cite arg) | |
668 | (save-excursion | |
669 | (gnus-cite-parse-maybe force) | |
670 | (article-goto-body) | |
671 | (let ((start (point)) | |
672 | (atts gnus-cite-attribution-alist) | |
673 | (buffer-read-only nil) | |
674 | (inhibit-point-motion-hooks t) | |
675 | (hidden 0) | |
676 | total) | |
677 | (goto-char (point-max)) | |
678 | (gnus-article-search-signature) | |
679 | (setq total (count-lines start (point))) | |
eec82323 | 680 | (while atts |
23f87bed MB |
681 | (setq hidden (+ hidden (length (cdr (assoc (cdar atts) |
682 | gnus-cite-prefix-alist)))) | |
683 | atts (cdr atts))) | |
684 | (when (or force | |
685 | (and (> (* 100 hidden) (* gnus-cite-hide-percentage total)) | |
686 | (> hidden gnus-cite-hide-absolute))) | |
687 | (gnus-add-wash-type 'cite) | |
688 | (setq atts gnus-cite-attribution-alist) | |
689 | (while atts | |
690 | (setq total (cdr (assoc (cdar atts) gnus-cite-prefix-alist)) | |
691 | atts (cdr atts)) | |
692 | (while total | |
693 | (setq hidden (car total) | |
694 | total (cdr total)) | |
695 | (goto-char (point-min)) | |
696 | (forward-line (1- hidden)) | |
697 | (unless (assq hidden gnus-cite-attribution-alist) | |
698 | (gnus-add-text-properties | |
699 | (point) (progn (forward-line 1) (point)) | |
700 | (nconc (list 'article-type 'cite) | |
701 | gnus-hidden-properties))))))))) | |
702 | (gnus-set-mode-line 'article))) | |
eec82323 LMI |
703 | |
704 | (defun gnus-article-hide-citation-in-followups () | |
705 | "Hide cited text in non-root articles." | |
706 | (interactive) | |
707 | (save-excursion | |
708 | (set-buffer gnus-article-buffer) | |
709 | (let ((article (cdr gnus-article-current))) | |
710 | (unless (save-excursion | |
711 | (set-buffer gnus-summary-buffer) | |
712 | (gnus-article-displayed-root-p article)) | |
713 | (gnus-article-hide-citation))))) | |
714 | ||
715 | ;;; Internal functions: | |
716 | ||
16409b0b GM |
717 | (defun gnus-cite-parse-maybe (&optional force no-overlay) |
718 | "Always parse the buffer." | |
719 | (gnus-cite-localize) | |
720 | ;;Reset parser information. | |
721 | (setq gnus-cite-prefix-alist nil | |
722 | gnus-cite-attribution-alist nil | |
723 | gnus-cite-loose-prefix-alist nil | |
724 | gnus-cite-loose-attribution-alist nil) | |
725 | (unless no-overlay | |
726 | (gnus-cite-delete-overlays)) | |
727 | ;; Parse if not too large. | |
728 | (if (and gnus-cite-parse-max-size | |
729 | (> (buffer-size) gnus-cite-parse-max-size)) | |
eec82323 | 730 | () |
16409b0b GM |
731 | (setq gnus-cite-article (cons (car gnus-article-current) |
732 | (cdr gnus-article-current))) | |
733 | (gnus-cite-parse-wrapper))) | |
734 | ||
735 | (defun gnus-cite-delete-overlays () | |
736 | (dolist (overlay gnus-cite-overlay-list) | |
23f87bed MB |
737 | (ignore-errors |
738 | (when (or (not (gnus-overlay-end overlay)) | |
739 | (and (>= (gnus-overlay-end overlay) (point-min)) | |
740 | (<= (gnus-overlay-end overlay) (point-max)))) | |
741 | (setq gnus-cite-overlay-list (delete overlay gnus-cite-overlay-list)) | |
742 | (ignore-errors | |
743 | (gnus-delete-overlay overlay)))))) | |
eec82323 LMI |
744 | |
745 | (defun gnus-cite-parse-wrapper () | |
16409b0b GM |
746 | ;; Wrap chopped gnus-cite-parse. |
747 | (article-goto-body) | |
748 | (let ((inhibit-point-motion-hooks t)) | |
749 | (save-excursion | |
750 | (gnus-cite-parse-attributions)) | |
751 | (save-excursion | |
752 | (gnus-cite-parse)) | |
753 | (save-excursion | |
754 | (gnus-cite-connect-attributions)))) | |
eec82323 LMI |
755 | |
756 | (defun gnus-cite-parse () | |
757 | ;; Parse and connect citation prefixes and attribution lines. | |
758 | ||
759 | ;; Parse current buffer searching for citation prefixes. | |
760 | (let ((line (1+ (count-lines (point-min) (point)))) | |
761 | (case-fold-search t) | |
762 | (max (save-excursion | |
763 | (goto-char (point-max)) | |
764 | (gnus-article-search-signature) | |
765 | (point))) | |
23f87bed MB |
766 | (prefix-regexp (concat "^\\(" message-cite-prefix-regexp "\\)")) |
767 | alist entry start begin end numbers prefix guess-limit) | |
eec82323 LMI |
768 | ;; Get all potential prefixes in `alist'. |
769 | (while (< (point) max) | |
770 | ;; Each line. | |
771 | (setq begin (point) | |
23f87bed MB |
772 | guess-limit (progn (skip-chars-forward "^> \t\r\n") (point)) |
773 | end (gnus-point-at-bol 2) | |
eec82323 LMI |
774 | start end) |
775 | (goto-char begin) | |
776 | ;; Ignore standard Supercite attribution prefix. | |
23f87bed MB |
777 | (when (and (< guess-limit (+ begin gnus-cite-max-prefix)) |
778 | (looking-at gnus-supercite-regexp)) | |
eec82323 LMI |
779 | (if (match-end 1) |
780 | (setq end (1+ (match-end 1))) | |
781 | (setq end (1+ begin)))) | |
782 | ;; Ignore very long prefixes. | |
23f87bed MB |
783 | (when (> end (+ begin gnus-cite-max-prefix)) |
784 | (setq end (+ begin gnus-cite-max-prefix))) | |
785 | ;; Ignore quoted envelope From_. | |
786 | (when (and gnus-cite-ignore-quoted-from | |
787 | (prog2 | |
788 | (setq case-fold-search nil) | |
789 | (looking-at ">From ") | |
790 | (setq case-fold-search t))) | |
791 | (setq end (1+ begin))) | |
792 | (while (re-search-forward prefix-regexp (1- end) t) | |
eec82323 LMI |
793 | ;; Each prefix. |
794 | (setq end (match-end 0) | |
795 | prefix (buffer-substring begin end)) | |
796 | (gnus-set-text-properties 0 (length prefix) nil prefix) | |
797 | (setq entry (assoc prefix alist)) | |
798 | (if entry | |
799 | (setcdr entry (cons line (cdr entry))) | |
800 | (push (list prefix line) alist)) | |
801 | (goto-char begin)) | |
802 | (goto-char start) | |
803 | (setq line (1+ line))) | |
23f87bed MB |
804 | ;; Horrible special case for some Microsoft mailers. |
805 | (goto-char (point-min)) | |
806 | (when (re-search-forward gnus-cite-unsightly-citation-regexp max t) | |
807 | (setq begin (count-lines (point-min) (point))) | |
808 | (setq end (count-lines (point-min) max)) | |
809 | (setq entry nil) | |
810 | (while (< begin end) | |
811 | (push begin entry) | |
812 | (setq begin (1+ begin))) | |
813 | (push (cons "" entry) alist)) | |
eec82323 LMI |
814 | ;; We got all the potential prefixes. Now create |
815 | ;; `gnus-cite-prefix-alist' containing the oldest prefix for each | |
23f87bed | 816 | ;; line that appears at least `gnus-cite-minimum-match-count' |
eec82323 LMI |
817 | ;; times. First sort them by length. Longer is older. |
818 | (setq alist (sort alist (lambda (a b) | |
819 | (> (length (car a)) (length (car b)))))) | |
820 | (while alist | |
821 | (setq entry (car alist) | |
822 | prefix (car entry) | |
823 | numbers (cdr entry) | |
824 | alist (cdr alist)) | |
825 | (cond ((null numbers) | |
826 | ;; No lines with this prefix that wasn't also part of | |
827 | ;; a longer prefix. | |
828 | ) | |
829 | ((< (length numbers) gnus-cite-minimum-match-count) | |
830 | ;; Too few lines with this prefix. We keep it a bit | |
831 | ;; longer in case it is an exact match for an attribution | |
832 | ;; line, but we don't remove the line from other | |
833 | ;; prefixes. | |
834 | (push entry gnus-cite-prefix-alist)) | |
835 | (t | |
836 | (push entry | |
837 | gnus-cite-prefix-alist) | |
838 | ;; Remove articles from other prefixes. | |
839 | (let ((loop alist) | |
840 | current) | |
841 | (while loop | |
842 | (setq current (car loop) | |
843 | loop (cdr loop)) | |
844 | (setcdr current | |
845 | (gnus-set-difference (cdr current) numbers))))))))) | |
846 | ||
847 | (defun gnus-cite-parse-attributions () | |
848 | (let (al-alist) | |
849 | ;; Parse attributions | |
850 | (while (re-search-forward gnus-cite-attribution-suffix (point-max) t) | |
851 | (let* ((start (match-beginning 0)) | |
852 | (end (match-end 0)) | |
853 | (wrote (count-lines (point-min) end)) | |
854 | (prefix (gnus-cite-find-prefix wrote)) | |
855 | ;; Check previous line for an attribution leader. | |
856 | (tag (progn | |
857 | (beginning-of-line 1) | |
858 | (when (looking-at gnus-supercite-secondary-regexp) | |
859 | (buffer-substring (match-beginning 1) | |
860 | (match-end 1))))) | |
861 | (in (progn | |
862 | (goto-char start) | |
863 | (and (re-search-backward gnus-cite-attribution-prefix | |
864 | (save-excursion | |
865 | (beginning-of-line 0) | |
866 | (point)) | |
867 | t) | |
868 | (not (re-search-forward gnus-cite-attribution-suffix | |
869 | start t)) | |
870 | (count-lines (point-min) (1+ (point))))))) | |
871 | (when (eq wrote in) | |
872 | (setq in nil)) | |
873 | (goto-char end) | |
874 | ;; don't add duplicates | |
875 | (let ((al (buffer-substring (save-excursion (beginning-of-line 0) | |
876 | (1+ (point))) | |
877 | end))) | |
878 | (if (not (assoc al al-alist)) | |
879 | (progn | |
880 | (push (list wrote in prefix tag) | |
881 | gnus-cite-loose-attribution-alist) | |
882 | (push (cons al t) al-alist)))))))) | |
883 | ||
884 | (defun gnus-cite-connect-attributions () | |
885 | ;; Connect attributions to citations | |
886 | ||
887 | ;; No citations have been connected to attribution lines yet. | |
888 | (setq gnus-cite-loose-prefix-alist (append gnus-cite-prefix-alist nil)) | |
889 | ||
890 | ;; Parse current buffer searching for attribution lines. | |
891 | ;; Find exact supercite citations. | |
892 | (gnus-cite-match-attributions 'small nil | |
893 | (lambda (prefix tag) | |
894 | (when tag | |
895 | (concat "\\`" | |
896 | (regexp-quote prefix) "[ \t]*" | |
897 | (regexp-quote tag) ">")))) | |
898 | ;; Find loose supercite citations after attributions. | |
899 | (gnus-cite-match-attributions 'small t | |
900 | (lambda (prefix tag) | |
901 | (when tag | |
902 | (concat "\\<" | |
903 | (regexp-quote tag) | |
904 | "\\>")))) | |
905 | ;; Find loose supercite citations anywhere. | |
906 | (gnus-cite-match-attributions 'small nil | |
907 | (lambda (prefix tag) | |
908 | (when tag | |
909 | (concat "\\<" | |
910 | (regexp-quote tag) | |
911 | "\\>")))) | |
912 | ;; Find nested citations after attributions. | |
913 | (gnus-cite-match-attributions 'small-if-unique t | |
914 | (lambda (prefix tag) | |
915 | (concat "\\`" (regexp-quote prefix) ".+"))) | |
916 | ;; Find nested citations anywhere. | |
917 | (gnus-cite-match-attributions 'small nil | |
918 | (lambda (prefix tag) | |
919 | (concat "\\`" (regexp-quote prefix) ".+"))) | |
920 | ;; Remove loose prefixes with too few lines. | |
921 | (let ((alist gnus-cite-loose-prefix-alist) | |
922 | entry) | |
923 | (while alist | |
924 | (setq entry (car alist) | |
925 | alist (cdr alist)) | |
926 | (when (< (length (cdr entry)) gnus-cite-minimum-match-count) | |
927 | (setq gnus-cite-prefix-alist | |
928 | (delq entry gnus-cite-prefix-alist) | |
929 | gnus-cite-loose-prefix-alist | |
930 | (delq entry gnus-cite-loose-prefix-alist))))) | |
931 | ;; Find flat attributions. | |
932 | (gnus-cite-match-attributions 'first t nil) | |
933 | ;; Find any attributions (are we getting desperate yet?). | |
934 | (gnus-cite-match-attributions 'first nil nil)) | |
935 | ||
936 | (defun gnus-cite-match-attributions (sort after fun) | |
937 | ;; Match all loose attributions and citations (SORT AFTER FUN) . | |
938 | ;; | |
939 | ;; If SORT is `small', the citation with the shortest prefix will be | |
940 | ;; used, if it is `first' the first prefix will be used, if it is | |
941 | ;; `small-if-unique' the shortest prefix will be used if the | |
942 | ;; attribution line does not share its own prefix with other | |
943 | ;; loose attribution lines, otherwise the first prefix will be used. | |
944 | ;; | |
945 | ;; If AFTER is non-nil, only citations after the attribution line | |
946 | ;; will be considered. | |
947 | ;; | |
948 | ;; If FUN is non-nil, it will be called with the arguments (WROTE | |
949 | ;; PREFIX TAG) and expected to return a regular expression. Only | |
950 | ;; citations whose prefix matches the regular expression will be | |
951 | ;; considered. | |
952 | ;; | |
953 | ;; WROTE is the attribution line number. | |
954 | ;; PREFIX is the attribution line prefix. | |
955 | ;; TAG is the Supercite tag on the attribution line. | |
956 | (let ((atts gnus-cite-loose-attribution-alist) | |
957 | (case-fold-search t) | |
958 | att wrote in prefix tag regexp limit smallest best size) | |
959 | (while atts | |
960 | (setq att (car atts) | |
961 | atts (cdr atts) | |
962 | wrote (nth 0 att) | |
963 | in (nth 1 att) | |
964 | prefix (nth 2 att) | |
965 | tag (nth 3 att) | |
966 | regexp (if fun (funcall fun prefix tag) "") | |
967 | size (cond ((eq sort 'small) t) | |
968 | ((eq sort 'first) nil) | |
969 | (t (< (length (gnus-cite-find-loose prefix)) 2))) | |
970 | limit (if after wrote -1) | |
971 | smallest 1000000 | |
972 | best nil) | |
973 | (let ((cites gnus-cite-loose-prefix-alist) | |
974 | cite candidate numbers first compare) | |
975 | (while cites | |
976 | (setq cite (car cites) | |
977 | cites (cdr cites) | |
978 | candidate (car cite) | |
979 | numbers (cdr cite) | |
980 | first (apply 'min numbers) | |
981 | compare (if size (length candidate) first)) | |
982 | (and (> first limit) | |
983 | regexp | |
984 | (string-match regexp candidate) | |
985 | (< compare smallest) | |
986 | (setq best cite | |
987 | smallest compare)))) | |
988 | (if (null best) | |
989 | () | |
990 | (setq gnus-cite-loose-attribution-alist | |
991 | (delq att gnus-cite-loose-attribution-alist)) | |
992 | (push (cons wrote (car best)) gnus-cite-attribution-alist) | |
993 | (when in | |
994 | (push (cons in (car best)) gnus-cite-attribution-alist)) | |
995 | (when (memq best gnus-cite-loose-prefix-alist) | |
996 | (let ((loop gnus-cite-prefix-alist) | |
997 | (numbers (cdr best)) | |
998 | current) | |
999 | (setq gnus-cite-loose-prefix-alist | |
1000 | (delq best gnus-cite-loose-prefix-alist)) | |
1001 | (while loop | |
1002 | (setq current (car loop) | |
1003 | loop (cdr loop)) | |
1004 | (if (eq current best) | |
1005 | () | |
1006 | (setcdr current (gnus-set-difference (cdr current) numbers)) | |
1007 | (when (null (cdr current)) | |
1008 | (setq gnus-cite-loose-prefix-alist | |
1009 | (delq current gnus-cite-loose-prefix-alist) | |
1010 | atts (delq current atts))))))))))) | |
1011 | ||
1012 | (defun gnus-cite-find-loose (prefix) | |
1013 | ;; Return a list of loose attribution lines prefixed by PREFIX. | |
1014 | (let* ((atts gnus-cite-loose-attribution-alist) | |
1015 | att line lines) | |
1016 | (while atts | |
1017 | (setq att (car atts) | |
1018 | line (car att) | |
1019 | atts (cdr atts)) | |
1020 | (when (string-equal (gnus-cite-find-prefix line) prefix) | |
1021 | (push line lines))) | |
1022 | lines)) | |
1023 | ||
1024 | (defun gnus-cite-add-face (number prefix face) | |
1025 | ;; At line NUMBER, ignore PREFIX and add FACE to the rest of the line. | |
1026 | (when face | |
1027 | (let ((inhibit-point-motion-hooks t) | |
6748645f | 1028 | from to overlay) |
16409b0b GM |
1029 | (goto-char (point-min)) |
1030 | (when (zerop (forward-line (1- number))) | |
eec82323 LMI |
1031 | (forward-char (length prefix)) |
1032 | (skip-chars-forward " \t") | |
1033 | (setq from (point)) | |
1034 | (end-of-line 1) | |
1035 | (skip-chars-backward " \t") | |
1036 | (setq to (point)) | |
1037 | (when (< from to) | |
6748645f LMI |
1038 | (push (setq overlay (gnus-make-overlay from to)) |
1039 | gnus-cite-overlay-list) | |
c1b1a4f3 | 1040 | (gnus-overlay-put overlay 'evaporate t) |
6748645f | 1041 | (gnus-overlay-put overlay 'face face)))))) |
eec82323 LMI |
1042 | |
1043 | (defun gnus-cite-toggle (prefix) | |
1044 | (save-excursion | |
1045 | (set-buffer gnus-article-buffer) | |
16409b0b | 1046 | (gnus-cite-parse-maybe nil t) |
eec82323 LMI |
1047 | (let ((buffer-read-only nil) |
1048 | (numbers (cdr (assoc prefix gnus-cite-prefix-alist))) | |
1049 | (inhibit-point-motion-hooks t) | |
1050 | number) | |
1051 | (while numbers | |
1052 | (setq number (car numbers) | |
1053 | numbers (cdr numbers)) | |
16409b0b GM |
1054 | (goto-char (point-min)) |
1055 | (forward-line (1- number)) | |
eec82323 | 1056 | (cond ((get-text-property (point) 'invisible) |
23f87bed MB |
1057 | ;; Can't remove 'cite from g-a-wash-types here because |
1058 | ;; multiple citations may be hidden -jas | |
eec82323 LMI |
1059 | (remove-text-properties (point) (progn (forward-line 1) (point)) |
1060 | gnus-hidden-properties)) | |
1061 | ((assq number gnus-cite-attribution-alist)) | |
1062 | (t | |
23f87bed | 1063 | (gnus-add-wash-type 'cite) |
eec82323 LMI |
1064 | (gnus-add-text-properties |
1065 | (point) (progn (forward-line 1) (point)) | |
1066 | (nconc (list 'article-type 'cite) | |
23f87bed MB |
1067 | gnus-hidden-properties)))) |
1068 | (let ((gnus-article-mime-handle-alist-1 | |
1069 | gnus-article-mime-handle-alist)) | |
1070 | (gnus-set-mode-line 'article)))))) | |
eec82323 LMI |
1071 | |
1072 | (defun gnus-cite-find-prefix (line) | |
1073 | ;; Return citation prefix for LINE. | |
1074 | (let ((alist gnus-cite-prefix-alist) | |
1075 | (prefix "") | |
1076 | entry) | |
1077 | (while alist | |
1078 | (setq entry (car alist) | |
1079 | alist (cdr alist)) | |
1080 | (when (memq line (cdr entry)) | |
1081 | (setq prefix (car entry)))) | |
1082 | prefix)) | |
1083 | ||
6748645f LMI |
1084 | (defun gnus-cite-localize () |
1085 | "Make the citation variables local to the article buffer." | |
1086 | (let ((vars '(gnus-cite-article | |
1087 | gnus-cite-overlay-list gnus-cite-prefix-alist | |
1088 | gnus-cite-attribution-alist gnus-cite-loose-prefix-alist | |
1089 | gnus-cite-loose-attribution-alist))) | |
1090 | (while vars | |
1091 | (make-local-variable (pop vars))))) | |
eec82323 | 1092 | |
23f87bed MB |
1093 | (defun gnus-cited-line-p () |
1094 | "Say whether the current line is a cited line." | |
1095 | (save-excursion | |
1096 | (beginning-of-line) | |
1097 | (let ((found nil)) | |
1098 | (dolist (prefix (mapcar 'car gnus-cite-prefix-alist)) | |
1099 | (when (string= (buffer-substring (point) (+ (length prefix) (point))) | |
1100 | prefix) | |
1101 | (setq found t))) | |
1102 | found))) | |
1103 | ||
eec82323 LMI |
1104 | (gnus-ems-redefine) |
1105 | ||
1106 | (provide 'gnus-cite) | |
1107 | ||
16409b0b GM |
1108 | ;; Local Variables: |
1109 | ;; coding: iso-8859-1 | |
1110 | ;; End: | |
1111 | ||
ab5796a9 | 1112 | ;;; arch-tag: 1997b044-6067-471e-8c8f-dc903093098a |
eec82323 | 1113 | ;;; gnus-cite.el ends here |