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comparison lisp/packages/supercite.el @ 0:376386a54a3c r19-14
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1 ;;; supercite.el --- minor mode for citing mail and news replies | |
2 | |
3 ;; Author: 1993 Barry A. Warsaw, Century Computing, Inc. <bwarsaw@cen.com> | |
4 ;; Maintainer: supercite-help@anthem.nlm.nih.gov | |
5 ;; Created: February 1993 | |
6 ;; Version: 3.1 | |
7 ;; Last Modified: 1993/09/22 18:58:46 | |
8 ;; Keywords: citation attribution mail news article reply followup | |
9 | |
10 ;; supercite.el revision: 3.54 | |
11 | |
12 ;; Copyright (C) 1993 Barry A. Warsaw | |
13 | |
14 ;; This file is part of XEmacs. | |
15 | |
16 ;; XEmacs is free software; you can redistribute it and/or modify it | |
17 ;; under the terms of the GNU General Public License as published by | |
18 ;; the Free Software Foundation; either version 2, or (at your option) | |
19 ;; any later version. | |
20 | |
21 ;; XEmacs is distributed in the hope that it will be useful, but | |
22 ;; WITHOUT ANY WARRANTY; without even the implied warranty of | |
23 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
24 ;; General Public License for more details. | |
25 | |
26 ;; You should have received a copy of the GNU General Public License | |
27 ;; along with XEmacs; see the file COPYING. If not, write to the Free | |
28 ;; Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. | |
29 | |
30 ;;; Synched up with: FSF 19.28. | |
31 | |
32 ;; LCD Archive Entry | |
33 ;; supercite|Barry A. Warsaw|supercite-help@anthem.nlm.nih.gov | |
34 ;; |Mail and news reply citation package | |
35 ;; |1993/09/22 18:58:46|3.1| | |
36 | |
37 ;; Code: | |
38 | |
39 | |
40 (require 'regi) | |
41 | |
42 ;; start user configuration variables | |
43 ;; vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv | |
44 | |
45 (defvar sc-auto-fill-region-p t | |
46 "*If non-nil, automatically fill each paragraph after it has been cited.") | |
47 | |
48 (defvar sc-blank-lines-after-headers 1 | |
49 "*Number of blank lines to leave after mail headers have been nuked. | |
50 Set to nil, to use whatever blank lines happen to occur naturally.") | |
51 | |
52 (defvar sc-citation-leader " " | |
53 "*String comprising first part of a citation.") | |
54 (defvar sc-citation-delimiter ">" | |
55 "*String comprising third part of a citation. | |
56 This string is used in both nested and non-nested citations.") | |
57 (defvar sc-citation-separator " " | |
58 "*String comprising fourth and last part of a citation.") | |
59 | |
60 (defvar sc-citation-leader-regexp "[ \t]*" | |
61 "*Regexp describing citation leader for a cited line. | |
62 This should NOT have a leading `^' character.") | |
63 | |
64 ;; Nemacs and Mule users note: please see the texinfo manual for | |
65 ;; suggestions on setting these variables. | |
66 (defvar sc-citation-root-regexp "[-._a-zA-Z0-9]*" | |
67 "*Regexp describing variable root part of a citation for a cited line. | |
68 This should NOT have a leading `^' character. See also | |
69 `sc-citation-nonnested-root-regexp'.") | |
70 (defvar sc-citation-nonnested-root-regexp "[-._a-zA-Z0-9]+" | |
71 "*Regexp describing the variable root part of a nested citation. | |
72 This should NOT have a leading `^' character. This variable is | |
73 related to `sc-citation-root-regexp' but where as that varariable | |
74 describes both nested and non-nested citation roots, this variable | |
75 describes only nested citation roots.") | |
76 (defvar sc-citation-delimiter-regexp "[>]+" | |
77 "*Regexp describing citation delimiter for a cited line. | |
78 This should NOT have a leading `^' character.") | |
79 (defvar sc-citation-separator-regexp "[ \t]*" | |
80 "*Regexp describing citation separator for a cited line. | |
81 This should NOT have a leading `^' character.") | |
82 | |
83 (defvar sc-cite-blank-lines-p nil | |
84 "*If non-nil, put a citation on blank lines.") | |
85 | |
86 (defvar sc-cite-frame-alist '() | |
87 "*Alist for frame selection during citing. | |
88 Each element of this list has the following form: | |
89 | |
90 (INFOKEY ((REGEXP . FRAME) | |
91 (REGEXP . FRAME) | |
92 (...))) | |
93 | |
94 Where INFOKEY is a key for `sc-mail-field', REGEXP is a regular | |
95 expression to match against the INFOKEY's value. FRAME is a citation | |
96 frame, or a variable containing a citation frame.") | |
97 (defvar sc-uncite-frame-alist '() | |
98 "*Alist for frame selection during unciting. | |
99 See the variable `sc-cite-frame-alist' for details.") | |
100 (defvar sc-recite-frame-alist '() | |
101 "*Alist for frame selection during reciting. | |
102 See the variable `sc-cite-frame-alist' for details.") | |
103 | |
104 (defvar sc-default-cite-frame | |
105 '(;; initialize fill state and temporary variables when entering | |
106 ;; frame. this makes things run much faster | |
107 (begin (progn | |
108 (sc-fill-if-different) | |
109 (setq sc-tmp-nested-regexp (sc-cite-regexp "") | |
110 sc-tmp-nonnested-regexp (sc-cite-regexp) | |
111 sc-tmp-dumb-regexp | |
112 (concat "\\(" | |
113 (sc-cite-regexp "") | |
114 "\\)" | |
115 (sc-cite-regexp sc-citation-nonnested-root-regexp)) | |
116 ))) | |
117 ;; blank lines mean paragraph separators, so fill the last cited | |
118 ;; paragraph, unless sc-cite-blank-lines-p is non-nil, in which | |
119 ;; case we treat blank lines just like any other line. | |
120 ("^[ \t]*$" (if sc-cite-blank-lines-p | |
121 (sc-cite-line) | |
122 (sc-fill-if-different ""))) | |
123 ;; do nothing if looking at a reference tag. make sure that the | |
124 ;; tag string isn't the empty string since this will match every | |
125 ;; line. it cannot be nil. | |
126 (sc-reference-tag-string (if (string= sc-reference-tag-string "") | |
127 (list 'continue) | |
128 nil)) | |
129 ;; this regexp catches nested citations in which the author cited | |
130 ;; a non-nested citation with a dumb citer. | |
131 (sc-tmp-dumb-regexp (sc-cite-coerce-dumb-citer)) | |
132 ;; if we are looking at a nested citation then add a citation level | |
133 (sc-tmp-nested-regexp (sc-add-citation-level)) | |
134 ;; if we're looking at a non-nested citation, coerce it to our style | |
135 (sc-tmp-nonnested-regexp (sc-cite-coerce-cited-line)) | |
136 ;; we must be looking at an uncited line. if we are in nested | |
137 ;; citations, just add a citation level | |
138 (sc-nested-citation-p (sc-add-citation-level)) | |
139 ;; we're looking at an uncited line and we are in non-nested | |
140 ;; citations, so cite it with a non-nested citation | |
141 (t (sc-cite-line)) | |
142 ;; be sure when we're done that we fill the last cited paragraph. | |
143 (end (sc-fill-if-different "")) | |
144 ) | |
145 "*Default REGI frame for citing a region.") | |
146 | |
147 (defvar sc-default-uncite-frame | |
148 '(;; do nothing on a blank line | |
149 ("^[ \t]*$" nil) | |
150 ;; if the line is cited, uncite it | |
151 ((sc-cite-regexp) (sc-uncite-line)) | |
152 ) | |
153 "*Default REGI frame for unciting a region.") | |
154 | |
155 (defvar sc-default-recite-frame | |
156 '(;; initialize fill state when entering frame | |
157 (begin (sc-fill-if-different)) | |
158 ;; do nothing on a blank line | |
159 ("^[ \t]*$" nil) | |
160 ;; if we're looking at a cited line, recite it | |
161 ((sc-cite-regexp) (sc-recite-line (sc-cite-regexp))) | |
162 ;; otherwise, the line is uncited, so just cite it | |
163 (t (sc-cite-line)) | |
164 ;; be sure when we're done that we fill the last cited paragraph. | |
165 (end (sc-fill-if-different "")) | |
166 ) | |
167 "*Default REGI frame for reciting a region.") | |
168 | |
169 (defvar sc-cite-region-limit t | |
170 "*This variable controls automatic citation of yanked text. | |
171 Legal values are: | |
172 | |
173 non-nil -- cite the entire region, regardless of its size | |
174 nil -- do not cite the region at all | |
175 <integer> -- a number indicating the threshold for citation. When | |
176 the number of lines in the region is greater than this | |
177 value, a warning message will be printed and the region | |
178 will not be cited. Lines in region are counted with | |
179 `count-lines'. | |
180 | |
181 The gathering of attribution information is not affected by the value | |
182 of this variable. The number of lines in the region is calculated | |
183 *after* all mail headers are removed. This variable is only consulted | |
184 during the initial citing via `sc-cite-original'.") | |
185 | |
186 (defvar sc-confirm-always-p t | |
187 "*If non-nil, always confirm attribution string before citing text body.") | |
188 | |
189 (defvar sc-default-attribution "Anon" | |
190 "*String used when author's attribution cannot be determined.") | |
191 (defvar sc-default-author-name "Anonymous" | |
192 "*String used when author's name cannot be determined.") | |
193 | |
194 (defvar sc-downcase-p nil | |
195 "*Non-nil means downcase the attribution and citation strings.") | |
196 | |
197 (defvar sc-electric-circular-p t | |
198 "*If non-nil, treat electric references as circular.") | |
199 (defvar sc-electric-mode-hook nil | |
200 "*Hook for `sc-electric-mode' electric references mode.") | |
201 (defvar sc-electric-references-p nil | |
202 "*Use electric references if non-nil.") | |
203 | |
204 (defvar sc-fixup-whitespace-p nil | |
205 "*If non-nil, delete all leading white space before citing.") | |
206 | |
207 (defvar sc-load-hook nil | |
208 "*Hook which gets run once after Supercite loads.") | |
209 (defvar sc-pre-hook nil | |
210 "*Hook which gets run before each invocation of `sc-cite-original'.") | |
211 (defvar sc-post-hook nil | |
212 "*Hook which gets run after each invocation of `sc-cite-original'.") | |
213 | |
214 (defvar sc-mail-warn-if-non-rfc822-p t | |
215 "*Warn if mail headers don't conform to RFC822.") | |
216 (defvar sc-mumble "" | |
217 "*Value returned by `sc-mail-field' if field isn't in mail headers.") | |
218 | |
219 (defvar sc-name-filter-alist | |
220 '(("^\\(Mr\\|Mrs\\|Ms\\|Dr\\)[.]?$" . 0) | |
221 ("^\\(Jr\\|Sr\\)[.]?$" . last) | |
222 ("^ASTS$" . 0) | |
223 ("^[I]+$" . last)) | |
224 "*Name list components which are filtered out as noise. | |
225 This variable contains an association list where each element is of | |
226 the form: (REGEXP . POSITION). | |
227 | |
228 REGEXP is a regular expression which matches the name list component. | |
229 Match is performed using `string-match'. POSITION is the position in | |
230 the name list which can match the regular expression, starting at zero | |
231 for the first element. Use `last' to match the last element in the | |
232 list and `any' to match all elements.") | |
233 | |
234 (defvar sc-nested-citation-p nil | |
235 "*Controls whether to use nested or non-nested citation style. | |
236 Non-nil uses nested citations, nil uses non-nested citations.") | |
237 | |
238 (defvar sc-nuke-mail-headers 'all | |
239 "*Controls mail header nuking. | |
240 Used in conjunction with `sc-nuke-mail-header-list'. Legal values are: | |
241 | |
242 `all' -- nuke all mail headers | |
243 `none' -- don't nuke any mail headers | |
244 `specified' -- nuke headers specified in `sc-nuke-mail-header-list' | |
245 `keep' -- keep headers specified in `sc-nuke-mail-header-list'") | |
246 | |
247 (defvar sc-nuke-mail-header-list nil | |
248 "*List of mail header regexps to remove or keep in body of reply. | |
249 This list contains regular expressions describing the mail headers to | |
250 keep or nuke, depending on the value of `sc-nuke-mail-headers'.") | |
251 | |
252 (defvar sc-preferred-attribution-list | |
253 '("sc-lastchoice" "x-attribution" "firstname" "initials" "lastname") | |
254 "*Specifies what to use as the attribution string. | |
255 Supercite creates a list of possible attributions when it scans the | |
256 mail headers from the original message. Each attribution choice is | |
257 associated with a key in an attribution alist. Supercite tries to | |
258 pick a \"preferred\" attribution by matching the attribution alist | |
259 keys against the elements in `sc-preferred-attribution-list' in order. | |
260 The first non-empty string value found is used as the preferred | |
261 attribution. | |
262 | |
263 Note that Supercite now honors the X-Attribution: mail field. If | |
264 present in the original message, the value of this field should always | |
265 be used to select the most preferred attribution since it reflects how | |
266 the original author would like to be distinguished. It should be | |
267 considered bad taste to put any attribution preference key before | |
268 \"x-attribution\" in this list, except perhaps for \"sc-lastchoice\" | |
269 \(see below). | |
270 | |
271 Supercite remembers the last attribution used when reciting an already | |
272 cited paragraph. This attribution will always be saved with the | |
273 \"sc-lastchoice\" key, which can be used in this list. Note that the | |
274 last choice is always reset after every call of `sc-cite-original'. | |
275 | |
276 Barring error conditions, the following preferences are always present | |
277 in the attribution alist: | |
278 | |
279 \"emailname\" -- email terminus name | |
280 \"initials\" -- initials of author | |
281 \"firstname\" -- first name of author | |
282 \"lastname\" -- last name of author | |
283 \"middlename-1\" -- first middle name of author | |
284 \"middlename-2\" -- second middle name of author | |
285 ... | |
286 | |
287 Middle name indexes can be any positive integer greater than 0, | |
288 although it is unlikely that many authors will supply more than one | |
289 middle name, if that many. The string of all middle names is | |
290 associated with the key \"middlenames\".") | |
291 | |
292 (defvar sc-attrib-selection-list nil | |
293 "*An alist for selecting preferred attribution based on mail headers. | |
294 Each element of this list has the following form: | |
295 | |
296 (INFOKEY ((REGEXP . ATTRIBUTION) | |
297 (REGEXP . ATTRIBUTION) | |
298 (...))) | |
299 | |
300 Where INFOKEY is a key for `sc-mail-field', REGEXP is a regular | |
301 expression to match against the INFOKEY's value. ATTRIBUTION can be a | |
302 string or a list. If its a string, then it is the attribution that is | |
303 selected by `sc-select-attribution'. If it is a list, it is `eval'd | |
304 and the return value must be a string, which is used as the selected | |
305 attribution. Note that the variable `sc-preferred-attribution-list' | |
306 must contain an element of the string \"sc-consult\" for this variable | |
307 to be consulted during attribution selection.") | |
308 | |
309 (defvar sc-attribs-preselect-hook nil | |
310 "*Hook to run before selecting an attribution.") | |
311 (defvar sc-attribs-postselect-hook nil | |
312 "*Hook to run after selecting an attribution, but before confirmation.") | |
313 | |
314 (defvar sc-pre-cite-hook nil | |
315 "*Hook to run before citing a region of text.") | |
316 (defvar sc-pre-uncite-hook nil | |
317 "*Hook to run before unciting a region of text.") | |
318 (defvar sc-pre-recite-hook nil | |
319 "*Hook to run before reciting a region of text.") | |
320 | |
321 (defvar sc-preferred-header-style 4 | |
322 "*Index into `sc-rewrite-header-list' specifying preferred header style. | |
323 Index zero accesses the first function in the list.") | |
324 | |
325 (defvar sc-reference-tag-string ">>>>> " | |
326 "*String used at the beginning of built-in reference headers.") | |
327 | |
328 (defvar sc-rewrite-header-list | |
329 '((sc-no-header) | |
330 (sc-header-on-said) | |
331 (sc-header-inarticle-writes) | |
332 (sc-header-regarding-adds) | |
333 (sc-header-attributed-writes) | |
334 (sc-header-author-writes) | |
335 (sc-header-verbose) | |
336 (sc-no-blank-line-or-header) | |
337 ) | |
338 "*List of reference header rewrite functions. | |
339 The variable `sc-preferred-header-style' controls which function in | |
340 this list is chosen for automatic reference header insertions. | |
341 Electric reference mode will cycle through this list of functions.") | |
342 | |
343 (defvar sc-titlecue-regexp "\\s +-+\\s +" | |
344 "*Regular expression describing the separator between names and titles. | |
345 Set to nil to treat entire field as a name.") | |
346 | |
347 (defvar sc-use-only-preference-p nil | |
348 "*Controls what happens when the preferred attribution cannot be found. | |
349 If non-nil, then `sc-default-attribution' will be used. If nil, then | |
350 some secondary scheme will be employed to find a suitable attribution | |
351 string.") | |
352 | |
353 ;; ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | |
354 ;; end user configuration variables | |
355 | |
356 (defconst sc-version "3.1" | |
357 "Supercite version number.") | |
358 (defconst sc-help-address "supercite-help@anthem.nlm.nih.gov" | |
359 "Address accepting submissions of bug reports.") | |
360 | |
361 (defvar sc-mail-info nil | |
362 "Alist of mail header information gleaned from reply buffer.") | |
363 (defvar sc-attributions nil | |
364 "Alist of attributions for use when citing.") | |
365 | |
366 (defconst sc-emacs-features | |
367 (let ((version 'v18) | |
368 (flavor 'GNU)) | |
369 (if (string= (substring emacs-version 0 2) "19") | |
370 (setq version 'v19)) | |
371 (if (string-match "XEmacs" emacs-version) | |
372 (setq flavor 'Lucid)) | |
373 ;; cobble up list | |
374 (list version flavor)) | |
375 "A list describing what version of Emacs we're running on. | |
376 Known flavors are: | |
377 | |
378 All GNU18's: (v18 GNU) | |
379 FSF19.x : (v19 GNU) | |
380 Lucid19.x : (v19 Lucid)") | |
381 | |
382 | |
383 (defvar sc-tmp-nested-regexp nil | |
384 "Temporary regepx describing nested citations.") | |
385 (defvar sc-tmp-nonnested-regexp nil | |
386 "Temporary regexp describing non-nested citations.") | |
387 (defvar sc-tmp-dumb-regexp nil | |
388 "Temp regexp describing non-nested citation cited with a nesting citer.") | |
389 | |
390 (defvar sc-minor-mode nil | |
391 "Supercite minor mode on flag.") | |
392 (defvar sc-mode-string " SC" | |
393 "Supercite minor mode string.") | |
394 | |
395 (make-variable-buffer-local 'sc-mail-info) | |
396 (make-variable-buffer-local 'sc-attributions) | |
397 (make-variable-buffer-local 'sc-minor-mode) | |
398 | |
399 | |
400 ;; ====================================================================== | |
401 ;; supercite keymaps | |
402 | |
403 (defvar sc-mode-map-prefix "\C-c\C-p" | |
404 "*Key binding to install Supercite keymap. | |
405 If this is nil, Supercite keymap is not installed.") | |
406 | |
407 (defvar sc-T-keymap () | |
408 "Keymap for sub-keymap of setting and toggling functions.") | |
409 (if sc-T-keymap | |
410 () | |
411 (setq sc-T-keymap (make-sparse-keymap)) | |
412 (define-key sc-T-keymap "a" 'sc-S-preferred-attribution-list) | |
413 (define-key sc-T-keymap "b" 'sc-T-mail-nuke-blank-lines) | |
414 (define-key sc-T-keymap "c" 'sc-T-confirm-always) | |
415 (define-key sc-T-keymap "d" 'sc-T-downcase) | |
416 (define-key sc-T-keymap "e" 'sc-T-electric-references) | |
417 (define-key sc-T-keymap "f" 'sc-T-auto-fill-region) | |
418 (define-key sc-T-keymap "h" 'sc-T-describe) | |
419 (define-key sc-T-keymap "l" 'sc-S-cite-region-limit) | |
420 (define-key sc-T-keymap "n" 'sc-S-mail-nuke-mail-headers) | |
421 (define-key sc-T-keymap "N" 'sc-S-mail-header-nuke-list) | |
422 (define-key sc-T-keymap "o" 'sc-T-electric-circular) | |
423 (define-key sc-T-keymap "p" 'sc-S-preferred-header-style) | |
424 (define-key sc-T-keymap "s" 'sc-T-nested-citation) | |
425 (define-key sc-T-keymap "u" 'sc-T-use-only-preferences) | |
426 (define-key sc-T-keymap "w" 'sc-T-fixup-whitespace) | |
427 (define-key sc-T-keymap "?" 'sc-T-describe) | |
428 ) | |
429 | |
430 (defvar sc-mode-map () | |
431 "Keymap for Supercite quasi-mode.") | |
432 (if sc-mode-map | |
433 () | |
434 (setq sc-mode-map (make-sparse-keymap)) | |
435 (define-key sc-mode-map "c" 'sc-cite-region) | |
436 (define-key sc-mode-map "f" 'sc-mail-field-query) | |
437 (define-key sc-mode-map "g" 'sc-mail-process-headers) | |
438 (define-key sc-mode-map "h" 'sc-describe) | |
439 (define-key sc-mode-map "i" 'sc-insert-citation) | |
440 (define-key sc-mode-map "o" 'sc-open-line) | |
441 (define-key sc-mode-map "r" 'sc-recite-region) | |
442 (define-key sc-mode-map "\C-p" 'sc-raw-mode-toggle) | |
443 (define-key sc-mode-map "u" 'sc-uncite-region) | |
444 (define-key sc-mode-map "v" 'sc-version) | |
445 (define-key sc-mode-map "w" 'sc-insert-reference) | |
446 (define-key sc-mode-map "\C-t" sc-T-keymap) | |
447 (define-key sc-mode-map "\C-b" 'sc-submit-bug-report) | |
448 (define-key sc-mode-map "?" 'sc-describe) | |
449 ) | |
450 | |
451 (defvar sc-electric-mode-map () | |
452 "Keymap for `sc-electric-mode' electric references mode.") | |
453 (if sc-electric-mode-map | |
454 nil | |
455 (setq sc-electric-mode-map (make-sparse-keymap)) | |
456 (define-key sc-electric-mode-map "p" 'sc-eref-prev) | |
457 (define-key sc-electric-mode-map "n" 'sc-eref-next) | |
458 (define-key sc-electric-mode-map "s" 'sc-eref-setn) | |
459 (define-key sc-electric-mode-map "j" 'sc-eref-jump) | |
460 (define-key sc-electric-mode-map "x" 'sc-eref-abort) | |
461 (define-key sc-electric-mode-map "q" 'sc-eref-abort) | |
462 (define-key sc-electric-mode-map "\r" 'sc-eref-exit) | |
463 (define-key sc-electric-mode-map "\n" 'sc-eref-exit) | |
464 (define-key sc-electric-mode-map "g" 'sc-eref-goto) | |
465 (define-key sc-electric-mode-map "?" 'describe-mode) | |
466 (define-key sc-electric-mode-map "\C-h" 'describe-mode) | |
467 ) | |
468 | |
469 (defvar sc-minibuffer-local-completion-map nil | |
470 "Keymap for minibuffer confirmation of attribution strings.") | |
471 (if sc-minibuffer-local-completion-map | |
472 () | |
473 (setq sc-minibuffer-local-completion-map | |
474 (copy-keymap minibuffer-local-completion-map)) | |
475 (define-key sc-minibuffer-local-completion-map "\C-t" 'sc-toggle-fn) | |
476 (define-key sc-minibuffer-local-completion-map " " 'self-insert-command)) | |
477 | |
478 (defvar sc-minibuffer-local-map nil | |
479 "Keymap for minibuffer confirmation of attribution strings.") | |
480 (if sc-minibuffer-local-map | |
481 () | |
482 (setq sc-minibuffer-local-map (copy-keymap minibuffer-local-map)) | |
483 (define-key sc-minibuffer-local-map "\C-t" 'sc-toggle-fn)) | |
484 | |
485 | |
486 ;; ====================================================================== | |
487 ;; utility functions | |
488 | |
489 (defun sc-completing-read (prompt table &optional predicate require-match | |
490 initial-contents history) | |
491 "Compatibility between Emacs 18 and 19 `completing-read'. | |
492 In version 18, the HISTORY argument is ignored." | |
493 (if (memq 'v19 sc-emacs-features) | |
494 (funcall 'completing-read prompt table predicate require-match | |
495 initial-contents history) | |
496 (funcall 'completing-read prompt table predicate require-match | |
497 (or (car-safe initial-contents) | |
498 initial-contents)))) | |
499 | |
500 (defun sc-read-string (prompt &optional initial-contents history) | |
501 "Compatibility between Emacs 18 and 19 `read-string'. | |
502 In version 18, the HISTORY argument is ignored." | |
503 (if (memq 'v19 sc-emacs-features) | |
504 (funcall 'read-string prompt initial-contents history) | |
505 (funcall 'read-string prompt initial-contents))) | |
506 | |
507 (defun sc-submatch (matchnum &optional string) | |
508 "Returns `match-beginning' and `match-end' sub-expression for MATCHNUM. | |
509 If optional STRING is provided, take sub-expression using `substring' | |
510 of argument, otherwise use `buffer-substring' on current buffer. Note | |
511 that `match-data' must have already been generated and no error | |
512 checking is performed by this function." | |
513 (if string | |
514 (substring string (match-beginning matchnum) (match-end matchnum)) | |
515 (buffer-substring (match-beginning matchnum) (match-end matchnum)))) | |
516 | |
517 (defun sc-member (elt list) | |
518 "Like `memq', but uses `equal' instead of `eq'. | |
519 Emacs19 has a builtin function `member' which does exactly this." | |
520 (catch 'elt-is-member | |
521 (while list | |
522 (if (equal elt (car list)) | |
523 (throw 'elt-is-member list)) | |
524 (setq list (cdr list))))) | |
525 (and (memq 'v19 sc-emacs-features) | |
526 (fset 'sc-member 'member)) | |
527 | |
528 (defun sc-ask (alist) | |
529 "Ask a question in the minibuffer requiring a single character answer. | |
530 This function is kind of an extension of `y-or-n-p' where a single | |
531 letter is used to answer a question. Question is formed from ALIST | |
532 which has members of the form: (WORD . LETTER). WORD is the long | |
533 word form, while LETTER is the letter for selecting that answer. The | |
534 selected letter is returned, or nil if the question was not answered. | |
535 Note that WORD is a string and LETTER is a character. All LETTERs in | |
536 the list should be unique." | |
537 (let* ((prompt (concat | |
538 (mapconcat (function (lambda (elt) (car elt))) alist ", ") | |
539 "? (" | |
540 (mapconcat | |
541 (function | |
542 (lambda (elt) (char-to-string (cdr elt)))) alist "/") | |
543 ") ")) | |
544 (p prompt) | |
545 (event | |
546 (if (memq 'Lucid sc-emacs-features) | |
547 (allocate-event) | |
548 nil))) | |
549 (while (stringp p) | |
550 (if (let ((cursor-in-echo-area t) | |
551 (inhibit-quit t)) | |
552 (message "%s" p) | |
553 ;; lets be good neighbors and be compatible with all emacsen | |
554 (cond | |
555 ((memq 'v18 sc-emacs-features) | |
556 (setq event (read-char))) | |
557 ((memq 'Lucid sc-emacs-features) | |
558 (next-command-event event)) | |
559 (t ; must be FSF19 | |
560 (setq event (read-event)))) | |
561 (prog1 quit-flag (setq quit-flag nil))) | |
562 (progn | |
563 (message "%s%s" p (single-key-description event)) | |
564 (and (memq 'Lucid sc-emacs-features) | |
565 (deallocate-event event)) | |
566 (setq quit-flag nil) | |
567 (signal 'quit '()))) | |
568 (let ((char | |
569 (if (memq 'Lucid sc-emacs-features) | |
570 (let* ((key (and (key-press-event-p event) (event-key event))) | |
571 (char (and key (event-to-character event)))) | |
572 char) | |
573 event)) | |
574 elt) | |
575 (if char (setq char (downcase char))) | |
576 (cond | |
577 ((setq elt (rassq char alist)) | |
578 (message "%s%s" p (car elt)) | |
579 (setq p (cdr elt))) | |
580 ((and (memq 'Lucid sc-emacs-features) | |
581 (button-release-event-p event)) ; ignore them | |
582 nil) | |
583 (t | |
584 (message "%s%s" p (single-key-description event)) | |
585 (if (memq 'Lucid sc-emacs-features) | |
586 (ding nil 'y-or-n-p) | |
587 (ding)) | |
588 (discard-input) | |
589 (if (eq p prompt) | |
590 (setq p (concat "Try again. " prompt))))))) | |
591 (and (memq 'Lucid sc-emacs-features) | |
592 (deallocate-event event)) | |
593 p)) | |
594 | |
595 (defun sc-scan-info-alist (alist) | |
596 "Find a match in the info alist that matches a regexp in ALIST." | |
597 (let ((sc-mumble "") | |
598 rtnvalue) | |
599 (while alist | |
600 (let* ((elem (car alist)) | |
601 (infokey (car elem)) | |
602 (infoval (sc-mail-field infokey)) | |
603 (mlist (car (cdr elem)))) | |
604 (while mlist | |
605 (let* ((ml-elem (car mlist)) | |
606 (regexp (car ml-elem)) | |
607 (thing (cdr ml-elem))) | |
608 (if (string-match regexp infoval) | |
609 ;; we found a match, time to return | |
610 (setq rtnvalue thing | |
611 mlist nil | |
612 alist nil) | |
613 ;; else we didn't find a match | |
614 (setq mlist (cdr mlist)) | |
615 ))) ;end of mlist loop | |
616 (setq alist (cdr alist)) | |
617 )) ;end of alist loop | |
618 rtnvalue)) | |
619 | |
620 | |
621 ;; ====================================================================== | |
622 ;; extract mail field information from headers in reply buffer | |
623 | |
624 ;; holder variables for bc happiness | |
625 (defvar sc-mail-headers-start nil | |
626 "Start of header fields.") | |
627 (defvar sc-mail-headers-end nil | |
628 "End of header fields.") | |
629 (defvar sc-mail-field-history nil | |
630 "For minibuffer completion on mail field queries.") | |
631 (defvar sc-mail-field-modification-history nil | |
632 "For minibuffer completion on mail field modifications.") | |
633 (defvar sc-mail-glom-frame | |
634 '((begin (setq sc-mail-headers-start (point))) | |
635 ("^x-attribution:[ \t]+.*$" (sc-mail-fetch-field t) nil t) | |
636 ("^\\S +:.*$" (sc-mail-fetch-field) nil t) | |
637 ("^$" (list 'abort '(step . 0))) | |
638 ("^[ \t]+" (sc-mail-append-field)) | |
639 (sc-mail-warn-if-non-rfc822-p (sc-mail-error-in-mail-field)) | |
640 (end (setq sc-mail-headers-end (point)))) | |
641 "Regi frame for glomming mail header information.") | |
642 | |
643 ;; regi functions | |
644 (defun sc-mail-fetch-field (&optional attribs-p) | |
645 "Insert a key and value into `sc-mail-info' alist. | |
646 If optional ATTRIBS-P is non-nil, the key/value pair is placed in | |
647 `sc-attributions' too." | |
648 (if (string-match "^\\(\\S *\\)\\s *:\\s +\\(.*\\)$" curline) | |
649 (let* ((key (downcase (sc-submatch 1 curline))) | |
650 (val (sc-submatch 2 curline)) | |
651 (keyval (cons key val))) | |
652 (setq sc-mail-info (cons keyval sc-mail-info)) | |
653 (if attribs-p | |
654 (setq sc-attributions (cons keyval sc-attributions))) | |
655 )) | |
656 nil) | |
657 | |
658 (defun sc-mail-append-field () | |
659 "Append a continuation line onto the last fetched mail field's info." | |
660 (let ((keyval (car sc-mail-info))) | |
661 (if (and keyval (string-match "^\\s *\\(.*\\)$" curline)) | |
662 (setcdr keyval (concat (cdr keyval) " " (sc-submatch 1 curline))))) | |
663 nil) | |
664 | |
665 (defun sc-mail-error-in-mail-field () | |
666 "Issue warning that mail headers don't conform to RFC 822." | |
667 (let* ((len (min (length curline) 10)) | |
668 (ellipsis (if (< len (length curline)) "..." "")) | |
669 (msg "Mail header \"%s%s\" doesn't conform to RFC 822. skipping...")) | |
670 (message msg (substring curline 0 len) ellipsis)) | |
671 (beep) | |
672 (sit-for 2) | |
673 nil) | |
674 | |
675 ;; mail header nuking | |
676 (defvar sc-mail-last-header-nuked-p nil | |
677 "True if the last header was nuked.") | |
678 | |
679 (defun sc-mail-nuke-line () | |
680 "Nuke the current mail header line." | |
681 (delete-region (regi-pos 'bol) (regi-pos 'bonl)) | |
682 '((step . -1))) | |
683 | |
684 (defun sc-mail-nuke-header-line () | |
685 "Delete current-line and set up for possible continuation." | |
686 (setq sc-mail-last-header-nuked-p t) | |
687 (sc-mail-nuke-line)) | |
688 | |
689 (defun sc-mail-nuke-continuation-line () | |
690 "Delete a continuation line if the last header line was deleted." | |
691 (if sc-mail-last-header-nuked-p | |
692 (sc-mail-nuke-line))) | |
693 | |
694 (defun sc-mail-cleanup-blank-lines () | |
695 "Leave some blank lines after original mail headers are nuked. | |
696 The number of lines left is specified by `sc-blank-lines-after-headers'." | |
697 (if sc-blank-lines-after-headers | |
698 (save-restriction | |
699 (widen) | |
700 (skip-chars-backward " \t\n") | |
701 (forward-line 1) | |
702 (delete-blank-lines) | |
703 (beginning-of-line) | |
704 (if (looking-at "[ \t]*$") | |
705 (delete-region (regi-pos 'bol) (regi-pos 'bonl))) | |
706 (insert-char ?\n sc-blank-lines-after-headers))) | |
707 nil) | |
708 | |
709 (defun sc-mail-build-nuke-frame () | |
710 "Build the regiframe for nuking mail headers." | |
711 (let (every-func entry-func nonentry-func) | |
712 (cond | |
713 ((eq sc-nuke-mail-headers 'all) | |
714 (setq every-func '(progn (forward-line -1) (sc-mail-nuke-line)))) | |
715 ((eq sc-nuke-mail-headers 'specified) | |
716 (setq entry-func '(sc-mail-nuke-header-line) | |
717 nonentry-func '(setq sc-mail-last-header-nuked-p nil))) | |
718 ((eq sc-nuke-mail-headers 'keep) | |
719 (setq entry-func '(setq sc-mail-last-header-nuked-p nil) | |
720 nonentry-func '(sc-mail-nuke-header-line))) | |
721 ;; we never get far enough to interpret a frame if s-n-m-h == 'none | |
722 ((eq sc-nuke-mail-headers 'none)) | |
723 (t (error "Illegal value for sc-nuke-mail-headers: %s" | |
724 sc-nuke-mail-headers)) | |
725 ) ; end-cond | |
726 (append | |
727 (and entry-func | |
728 (regi-mapcar sc-nuke-mail-header-list entry-func nil t)) | |
729 (and nonentry-func (list (list "^\\S +:.*$" nonentry-func))) | |
730 (and (not every-func) | |
731 '(("^[ \t]+" (sc-mail-nuke-continuation-line)))) | |
732 '((begin (setq sc-mail-last-header-zapped-p nil))) | |
733 '((end (sc-mail-cleanup-blank-lines))) | |
734 (and every-func (list (list 'every every-func))) | |
735 ))) | |
736 | |
737 ;; mail processing and zapping. this is the top level entry defun to | |
738 ;; all header processing. | |
739 (defun sc-mail-process-headers (start end) | |
740 "Process original mail message's mail headers. | |
741 After processing, mail headers may be nuked. Header information is | |
742 stored in `sc-mail-info', and any old information is lost unless an | |
743 error occurs." | |
744 (interactive "r") | |
745 (let ((info (copy-alist sc-mail-info)) | |
746 (attribs (copy-alist sc-attributions))) | |
747 (setq sc-mail-info nil | |
748 sc-attributions nil) | |
749 (regi-interpret sc-mail-glom-frame start end) | |
750 (if (null sc-mail-info) | |
751 (progn | |
752 (message "No mail headers found! Restoring old information.") | |
753 (setq sc-mail-info info | |
754 sc-attributions attribs)) | |
755 (regi-interpret (sc-mail-build-nuke-frame) | |
756 sc-mail-headers-start sc-mail-headers-end) | |
757 ))) | |
758 | |
759 | |
760 ;; let the user change mail field information | |
761 (defun sc-mail-field (field) | |
762 "Return the mail header field value associated with FIELD. | |
763 If there was no mail header with FIELD as its key, return the value of | |
764 `sc-mumble'. FIELD is case insensitive." | |
765 (or (cdr (assoc (downcase field) sc-mail-info)) sc-mumble)) | |
766 | |
767 (defun sc-mail-field-query (arg) | |
768 "View the value of a mail field. | |
769 With `\\[universal-argument]', prompts for action on mail field. | |
770 Action can be one of: View, Modify, Add, or Delete." | |
771 (interactive "P") | |
772 (let* ((alist '(("view" . ?v) ("modify" . ?m) ("add" . ?a) ("delete" . ?d))) | |
773 (action (if (not arg) ?v (sc-ask alist))) | |
774 key) | |
775 (if (not action) | |
776 () | |
777 (setq key (sc-completing-read | |
778 (concat (car (rassq action alist)) | |
779 " information key: ") | |
780 sc-mail-info nil | |
781 (if (eq action ?a) nil 'noexit) | |
782 nil 'sc-mail-field-history)) | |
783 (cond | |
784 ((eq action ?v) | |
785 (message "%s: %s" key (cdr (assoc key sc-mail-info)))) | |
786 ((eq action ?d) | |
787 (setq sc-mail-info (delq (assoc key sc-mail-info) sc-mail-info))) | |
788 ((eq action ?m) | |
789 (let ((keyval (assoc key sc-mail-info))) | |
790 ;; first put initial value onto list if not already there | |
791 (if (not (sc-member (cdr keyval) | |
792 sc-mail-field-modification-history)) | |
793 (setq sc-mail-field-modification-history | |
794 (cons (cdr keyval) sc-mail-field-modification-history))) | |
795 (setcdr keyval (sc-read-string | |
796 (concat key ": ") (cdr keyval) | |
797 'sc-mail-field-modification-history)))) | |
798 ((eq action ?a) | |
799 (setq sc-mail-info | |
800 (cons (cons key | |
801 (sc-read-string (concat key ": "))) sc-mail-info))) | |
802 )))) | |
803 | |
804 | |
805 ;; ====================================================================== | |
806 ;; attributions | |
807 | |
808 (defvar sc-attribution-confirmation-history nil | |
809 "History for confirmation of attribution strings.") | |
810 (defvar sc-citation-confirmation-history nil | |
811 "History for confirmation of attribution prefixes.") | |
812 | |
813 (defun sc-attribs-%@-addresses (from &optional delim) | |
814 "Extract the author's email terminus from email address FROM. | |
815 Match addresses of the style ``name%[stuff].'' when called with DELIM | |
816 of \"%\" and addresses of the style ``[stuff]name@[stuff]'' when | |
817 called with DELIM \"@\". If DELIM is nil or not provided, matches | |
818 addresses of the style ``name''." | |
819 (and (string-match (concat "[-a-zA-Z0-9_.]+" delim) from 0) | |
820 (substring from | |
821 (match-beginning 0) | |
822 (- (match-end 0) (if (null delim) 0 1))))) | |
823 | |
824 (defun sc-attribs-!-addresses (from) | |
825 "Extract the author's email terminus from email address FROM. | |
826 Match addresses of the style ``[stuff]![stuff]...!name[stuff].''" | |
827 (let ((eos (length from)) | |
828 (mstart (string-match "![-a-zA-Z0-9_.]+\\([^-!a-zA-Z0-9_.]\\|$\\)" | |
829 from 0)) | |
830 (mend (match-end 0))) | |
831 (and mstart | |
832 (substring from (1+ mstart) (- mend (if (= mend eos) 0 1))) | |
833 ))) | |
834 | |
835 (defun sc-attribs-<>-addresses (from) | |
836 "Extract the author's email terminus from email address FROM. | |
837 Match addresses of the style ``<name[stuff]>.''" | |
838 (and (string-match "<\\(.*\\)>" from) | |
839 (sc-submatch 1 from))) | |
840 | |
841 (defun sc-get-address (from author) | |
842 "Get the full email address path from FROM. | |
843 AUTHOR is the author's name (which is removed from the address)." | |
844 (let ((eos (length from))) | |
845 (if (string-match (concat "\\(^\\|^\"\\)" author | |
846 "\\(\\s +\\|\"\\s +\\)") from 0) | |
847 (let ((address (substring from (match-end 0) eos))) | |
848 (if (and (= (aref address 0) ?<) | |
849 (= (aref address (1- (length address))) ?>)) | |
850 (substring address 1 (1- (length address))) | |
851 address)) | |
852 (if (string-match "[-a-zA-Z0-9!@%._]+" from 0) | |
853 (sc-submatch 0 from) | |
854 "") | |
855 ))) | |
856 | |
857 (defun sc-attribs-emailname (from) | |
858 "Get the email terminus name from FROM." | |
859 (or | |
860 (sc-attribs-%@-addresses from "%") | |
861 (sc-attribs-%@-addresses from "@") | |
862 (sc-attribs-!-addresses from) | |
863 (sc-attribs-<>-addresses from) | |
864 (sc-attribs-%@-addresses from) | |
865 (substring from 0 10))) | |
866 | |
867 (defun sc-name-substring (string start end extend) | |
868 "Extract the specified substring of STRING from START to END. | |
869 EXTEND is the number of characters on each side to extend the | |
870 substring." | |
871 (and start | |
872 (let ((sos (+ start extend)) | |
873 (eos (- end extend))) | |
874 (substring string sos | |
875 (or (string-match sc-titlecue-regexp string sos) eos) | |
876 )))) | |
877 | |
878 (defun sc-attribs-extract-namestring (from) | |
879 "Extract the name string from FROM. | |
880 This should be the author's full name minus an optional title." | |
881 (let ((namestring | |
882 (or | |
883 (sc-name-substring | |
884 from (string-match "(.*)" from 0) (match-end 0) 1) | |
885 (sc-name-substring | |
886 from (string-match "\".*\"" from 0) (match-end 0) 1) | |
887 (sc-name-substring | |
888 from (string-match "\\([-.a-zA-Z0-9_]+\\s +\\)+<" from 0) | |
889 (match-end 1) 0) | |
890 (sc-attribs-emailname from)))) | |
891 ;; strip off any leading or trailing whitespace | |
892 (if namestring | |
893 (let ((bos 0) | |
894 (eos (1- (length namestring)))) | |
895 (while (and (<= bos eos) | |
896 (memq (aref namestring bos) '(32 ?\t))) | |
897 (setq bos (1+ bos))) | |
898 (while (and (> eos bos) | |
899 (memq (aref namestring eos) '(32 ?\t))) | |
900 (setq eos (1- eos))) | |
901 (substring namestring bos (1+ eos)))))) | |
902 | |
903 (defun sc-attribs-chop-namestring (namestring) | |
904 "Convert NAMESTRING to a list of names. | |
905 example: (sc-namestring-to-list \"John Xavier Doe\") | |
906 => (\"John\" \"Xavier\" \"Doe\")" | |
907 (if (string-match "\\([ \t]*\\)\\([^ \t._]+\\)\\([ \t]*\\)" namestring) | |
908 (cons (sc-submatch 2 namestring) | |
909 (sc-attribs-chop-namestring (substring namestring (match-end 3))) | |
910 ))) | |
911 | |
912 (defun sc-attribs-strip-initials (namelist) | |
913 "Extract the author's initials from the NAMELIST." | |
914 (mapconcat | |
915 (function | |
916 (lambda (name) | |
917 (if (< 0 (length name)) | |
918 (substring name 0 1)))) | |
919 namelist "")) | |
920 | |
921 (defun sc-guess-attribution (&optional string) | |
922 "Guess attribution string on current line. | |
923 If attribution cannot be guessed, nil is returned. Optional STRING if | |
924 supplied, is used instead of the line point is on in the current buffer." | |
925 (let ((start 0) | |
926 (string (or string (buffer-substring (regi-pos 'bol) (regi-pos 'eol)))) | |
927 attribution) | |
928 (and | |
929 (= start (or (string-match sc-citation-leader-regexp string start) -1)) | |
930 (setq start (match-end 0)) | |
931 (= start (or (string-match sc-citation-root-regexp string start) 1)) | |
932 (setq attribution (sc-submatch 0 string) | |
933 start (match-end 0)) | |
934 (= start (or (string-match sc-citation-delimiter-regexp string start) -1)) | |
935 (setq start (match-end 0)) | |
936 (= start (or (string-match sc-citation-separator-regexp string start) -1)) | |
937 attribution))) | |
938 | |
939 (defun sc-attribs-filter-namelist (namelist) | |
940 "Filter out noise in NAMELIST according to `sc-name-filter-alist'." | |
941 (let ((elements (length namelist)) | |
942 (position -1) | |
943 keepers filtered-list) | |
944 (mapcar | |
945 (function | |
946 (lambda (name) | |
947 (setq position (1+ position)) | |
948 (let ((keep-p t)) | |
949 (mapcar | |
950 (function | |
951 (lambda (filter) | |
952 (let ((regexp (car filter)) | |
953 (pos (cdr filter))) | |
954 (if (and (string-match regexp name) | |
955 (or (and (numberp pos) | |
956 (= pos position)) | |
957 (and (eq pos 'last) | |
958 (= position (1- elements))) | |
959 (eq pos 'any))) | |
960 (setq keep-p nil)) | |
961 ))) | |
962 sc-name-filter-alist) | |
963 (if keep-p | |
964 (setq keepers (cons position keepers))) | |
965 ))) | |
966 namelist) | |
967 (mapcar | |
968 (function | |
969 (lambda (position) | |
970 (setq filtered-list (cons (nth position namelist) filtered-list)) | |
971 )) | |
972 keepers) | |
973 filtered-list)) | |
974 | |
975 (defun sc-attribs-chop-address (from) | |
976 "Extract attribution information from FROM. | |
977 This populates the `sc-attributions' with the list of possible attributions." | |
978 (if (and (stringp from) | |
979 (< 0 (length from))) | |
980 (let* ((sc-mumble "") | |
981 (namestring (sc-attribs-extract-namestring from)) | |
982 (namelist (sc-attribs-filter-namelist | |
983 (sc-attribs-chop-namestring namestring))) | |
984 (revnames (reverse (cdr namelist))) | |
985 (firstname (car namelist)) | |
986 (midnames (reverse (cdr revnames))) | |
987 (lastname (car revnames)) | |
988 (initials (sc-attribs-strip-initials namelist)) | |
989 (emailname (sc-attribs-emailname from)) | |
990 (n 1) | |
991 author middlenames) | |
992 | |
993 ;; put basic information | |
994 (setq | |
995 ;; put middle names and build sc-author entry | |
996 middlenames (mapconcat | |
997 (function | |
998 (lambda (midname) | |
999 (let ((key-attribs (format "middlename-%d" n)) | |
1000 (key-mail (format "sc-middlename-%d" n))) | |
1001 (setq | |
1002 sc-attributions (cons (cons key-attribs midname) | |
1003 sc-attributions) | |
1004 sc-mail-info (cons (cons key-mail midname) | |
1005 sc-mail-info) | |
1006 n (1+ n)) | |
1007 midname))) | |
1008 midnames " ") | |
1009 | |
1010 author (concat firstname " " middlenames (and midnames " ") lastname) | |
1011 | |
1012 sc-attributions (append | |
1013 (list | |
1014 (cons "firstname" firstname) | |
1015 (cons "lastname" lastname) | |
1016 (cons "emailname" emailname) | |
1017 (cons "initials" initials)) | |
1018 sc-attributions) | |
1019 sc-mail-info (append | |
1020 (list | |
1021 (cons "sc-firstname" firstname) | |
1022 (cons "sc-middlenames" middlenames) | |
1023 (cons "sc-lastname" lastname) | |
1024 (cons "sc-emailname" emailname) | |
1025 (cons "sc-initials" initials) | |
1026 (cons "sc-author" author) | |
1027 (cons "sc-from-address" (sc-get-address | |
1028 (sc-mail-field "from") | |
1029 namestring)) | |
1030 (cons "sc-reply-address" (sc-get-address | |
1031 (sc-mail-field "reply-to") | |
1032 namestring)) | |
1033 (cons "sc-sender-address" (sc-get-address | |
1034 (sc-mail-field "sender") | |
1035 namestring)) | |
1036 ) | |
1037 sc-mail-info) | |
1038 )) | |
1039 ;; from string is empty | |
1040 (setq sc-mail-info (cons (cons "sc-author" sc-default-author-name) | |
1041 sc-mail-info)))) | |
1042 | |
1043 (defvar sc-attrib-or-cite nil | |
1044 "Used to toggle between attribution input or citation input.") | |
1045 | |
1046 (defun sc-toggle-fn () | |
1047 "Toggle between attribution selection and citation selection. | |
1048 Only used during confirmation." | |
1049 (interactive) | |
1050 (setq sc-attrib-or-cite (not sc-attrib-or-cite)) | |
1051 (throw 'sc-reconfirm t)) | |
1052 | |
1053 (defun sc-select-attribution () | |
1054 "Select an attribution from `sc-attributions'. | |
1055 | |
1056 Variables involved in selection process include: | |
1057 `sc-preferred-attribution-list' | |
1058 `sc-use-only-preference-p' | |
1059 `sc-confirm-always-p' | |
1060 `sc-default-attribution' | |
1061 `sc-attrib-selection-list'. | |
1062 | |
1063 Runs the hook `sc-attribs-preselect-hook' before selecting an | |
1064 attribution and the hook `sc-attribs-postselect-hook' after making the | |
1065 selection but before querying is performed. During | |
1066 `sc-attribs-postselect-hook' the variable `citation' is bound to the | |
1067 auto-selected citation string and the variable `attribution' is bound | |
1068 to the auto-selected attribution string." | |
1069 (run-hooks 'sc-attribs-preselect-hook) | |
1070 (let ((query-p sc-confirm-always-p) | |
1071 attribution citation | |
1072 (attriblist sc-preferred-attribution-list)) | |
1073 | |
1074 ;; first cruise through sc-preferred-attribution-list looking for | |
1075 ;; a match in either sc-attributions or sc-mail-info. if the | |
1076 ;; element is "sc-consult", then we have to do the alist | |
1077 ;; consultation phase | |
1078 (while attriblist | |
1079 (let* ((preferred (car attriblist))) | |
1080 (cond | |
1081 ((string= preferred "sc-consult") | |
1082 ;; we've been told to consult the attribution vs. mail | |
1083 ;; header key alist. we do this until we find a match in | |
1084 ;; the sc-attrib-selection-list. if we do not find a match, | |
1085 ;; we continue scanning attriblist | |
1086 (let ((attrib (sc-scan-info-alist sc-attrib-selection-list))) | |
1087 (cond | |
1088 ((not attrib) | |
1089 (setq attriblist (cdr attriblist))) | |
1090 ((stringp attrib) | |
1091 (setq attribution attrib | |
1092 attriblist nil)) | |
1093 ((listp attrib) | |
1094 (setq attribution (eval attrib) | |
1095 attriblist nil)) | |
1096 (t (error "%s did not evaluate to a string or list!" | |
1097 "sc-attrib-selection-list")) | |
1098 ))) | |
1099 ((setq attribution (cdr (assoc preferred sc-attributions))) | |
1100 (setq attriblist nil)) | |
1101 (t | |
1102 (setq attriblist (cdr attriblist))) | |
1103 ))) | |
1104 | |
1105 ;; if preference was not found, we may use a secondary method to | |
1106 ;; find a valid attribution | |
1107 (if (and (not attribution) | |
1108 (not sc-use-only-preference-p)) | |
1109 ;; secondary method tries to find a preference in this order | |
1110 ;; 1. sc-lastchoice | |
1111 ;; 2. x-attribution | |
1112 ;; 3. firstname | |
1113 ;; 4. lastname | |
1114 ;; 5. initials | |
1115 ;; 6. first non-empty attribution in alist | |
1116 (setq attribution | |
1117 (or (cdr (assoc "sc-lastchoice" sc-attributions)) | |
1118 (cdr (assoc "x-attribution" sc-attributions)) | |
1119 (cdr (assoc "firstname" sc-attributions)) | |
1120 (cdr (assoc "lastname" sc-attributions)) | |
1121 (cdr (assoc "initials" sc-attributions)) | |
1122 (cdr (car sc-attributions))))) | |
1123 | |
1124 ;; still couldn't find an attribution. we're now limited to using | |
1125 ;; the default attribution, but we'll force a query when this happens | |
1126 (if (not attribution) | |
1127 (setq attribution sc-default-attribution | |
1128 query-p t)) | |
1129 | |
1130 ;; create the attribution prefix | |
1131 (setq citation (sc-make-citation attribution)) | |
1132 | |
1133 ;; run the post selection hook before querying the user | |
1134 (run-hooks 'sc-attribs-postselect-hook) | |
1135 | |
1136 ;; query for confirmation | |
1137 (if query-p | |
1138 (let* ((query-alist (mapcar (function (lambda (entry) | |
1139 (list (cdr entry)))) | |
1140 sc-attributions)) | |
1141 (minibuffer-local-completion-map | |
1142 sc-minibuffer-local-completion-map) | |
1143 (minibuffer-local-map sc-minibuffer-local-map) | |
1144 (initial attribution) | |
1145 (completer-disable t) ; in case completer.el is used | |
1146 choice) | |
1147 (setq sc-attrib-or-cite nil) ; nil==attribution, t==citation | |
1148 (while | |
1149 (catch 'sc-reconfirm | |
1150 (string= "" (setq choice | |
1151 (if sc-attrib-or-cite | |
1152 (sc-read-string | |
1153 "Enter citation prefix: " | |
1154 citation | |
1155 'sc-citation-confirmation-history) | |
1156 (sc-completing-read | |
1157 "Complete attribution name: " | |
1158 query-alist nil nil | |
1159 (cons initial 0) | |
1160 'sc-attribution-confirmation-history) | |
1161 ))))) | |
1162 (if sc-attrib-or-cite | |
1163 ;; since the citation was chosen, we have to guess at | |
1164 ;; the attribution | |
1165 (setq citation choice | |
1166 attribution (or (sc-guess-attribution citation) | |
1167 citation)) | |
1168 | |
1169 (setq citation (sc-make-citation choice) | |
1170 attribution choice)) | |
1171 )) | |
1172 | |
1173 ;; its possible that the user wants to downcase the citation and | |
1174 ;; attribution | |
1175 (if sc-downcase-p | |
1176 (setq citation (downcase citation) | |
1177 attribution (downcase attribution))) | |
1178 | |
1179 ;; set up mail info alist | |
1180 (let* ((ckey "sc-citation") | |
1181 (akey "sc-attribution") | |
1182 (ckeyval (assoc ckey sc-mail-info)) | |
1183 (akeyval (assoc akey sc-mail-info))) | |
1184 (if ckeyval | |
1185 (setcdr ckeyval citation) | |
1186 (setq sc-mail-info | |
1187 (append (list (cons ckey citation)) sc-mail-info))) | |
1188 (if akeyval | |
1189 (setcdr akeyval attribution) | |
1190 (setq sc-mail-info | |
1191 (append (list (cons akey attribution)) sc-mail-info)))) | |
1192 | |
1193 ;; set the sc-lastchoice attribution | |
1194 (let* ((lkey "sc-lastchoice") | |
1195 (lastchoice (assoc lkey sc-attributions))) | |
1196 (if lastchoice | |
1197 (setcdr lastchoice attribution) | |
1198 (setq sc-attributions | |
1199 (cons (cons lkey attribution) sc-attributions)))) | |
1200 )) | |
1201 | |
1202 | |
1203 ;; ====================================================================== | |
1204 ;; filladapt hooks for supercite 3.1. you shouldn't need anything | |
1205 ;; extra to make gin-mode understand supercited lines. Even this | |
1206 ;; stuff might not be entirely necessary... | |
1207 | |
1208 (defun sc-cite-regexp (&optional root-regexp) | |
1209 "Return a regexp describing a Supercited line. | |
1210 The regexp is the concatenation of `sc-citation-leader-regexp', | |
1211 `sc-citation-root-regexp', `sc-citation-delimiter-regexp', and | |
1212 `sc-citation-separator-regexp'. If optional ROOT-REGEXP is supplied, | |
1213 use it instead of `sc-citation-root-regexp'." | |
1214 (concat sc-citation-leader-regexp | |
1215 (or root-regexp sc-citation-root-regexp) | |
1216 sc-citation-delimiter-regexp | |
1217 sc-citation-separator-regexp)) | |
1218 | |
1219 (defun sc-make-citation (attribution) | |
1220 "Make a non-nested citation from ATTRIBUTION." | |
1221 (concat sc-citation-leader | |
1222 attribution | |
1223 sc-citation-delimiter | |
1224 sc-citation-separator)) | |
1225 | |
1226 (defun sc-setup-filladapt () | |
1227 "Setup `filladapt-prefix-table' to handle Supercited paragraphs." | |
1228 (if (boundp 'filladapt-prefix-table) | |
1229 (let* ((fa-sc-elt 'filladapt-supercite-included-text) | |
1230 (elt (rassq fa-sc-elt filladapt-prefix-table))) | |
1231 (if elt (setcar elt (sc-cite-regexp)) | |
1232 (message "Filladapt doesn't seem to know about Supercite.") | |
1233 (beep))))) | |
1234 | |
1235 | |
1236 ;; ====================================================================== | |
1237 ;; citing and unciting regions of text | |
1238 | |
1239 (defvar sc-fill-begin 1 | |
1240 "Buffer position to begin filling.") | |
1241 (defvar sc-fill-line-prefix "" | |
1242 "Fill prefix of previous line") | |
1243 | |
1244 ;; filling | |
1245 (defun sc-fill-if-different (&optional prefix) | |
1246 "Fill the region bounded by `sc-fill-begin' and point. | |
1247 Only fill if optional PREFIX is different than `sc-fill-line-prefix'. | |
1248 If `sc-auto-fill-region-p' is nil, do not fill region. If PREFIX is | |
1249 not supplied, initialize fill variables. This is useful for a regi | |
1250 `begin' frame-entry." | |
1251 (if (not prefix) | |
1252 (setq sc-fill-line-prefix "" | |
1253 sc-fill-begin (regi-pos 'bol)) | |
1254 (if (and sc-auto-fill-region-p | |
1255 (not (string= prefix sc-fill-line-prefix))) | |
1256 (let ((fill-prefix sc-fill-line-prefix)) | |
1257 (if (not (string= fill-prefix "")) | |
1258 (fill-region sc-fill-begin (regi-pos 'bol))) | |
1259 (setq sc-fill-line-prefix prefix | |
1260 sc-fill-begin (regi-pos 'bol)))) | |
1261 ) | |
1262 nil) | |
1263 | |
1264 (defun sc-cite-coerce-cited-line () | |
1265 "Coerce a Supercited line to look like our style." | |
1266 (let* ((attribution (sc-guess-attribution)) | |
1267 (regexp (sc-cite-regexp attribution)) | |
1268 (prefix (sc-make-citation attribution))) | |
1269 (if (and attribution | |
1270 (looking-at regexp)) | |
1271 (progn | |
1272 (delete-region | |
1273 (match-beginning 0) | |
1274 (save-excursion | |
1275 (goto-char (match-end 0)) | |
1276 (if (bolp) (forward-char -1)) | |
1277 (point))) | |
1278 (insert prefix) | |
1279 (sc-fill-if-different prefix))) | |
1280 nil)) | |
1281 | |
1282 (defun sc-cite-coerce-dumb-citer () | |
1283 "Coerce a non-nested citation that's been cited with a dumb nesting citer." | |
1284 (delete-region (match-beginning 1) (match-end 1)) | |
1285 (beginning-of-line) | |
1286 (sc-cite-coerce-cited-line)) | |
1287 | |
1288 (defun sc-guess-nesting (&optional string) | |
1289 "Guess the citation nesting on the current line. | |
1290 If nesting cannot be guessed, nil is returned. Optional STRING if | |
1291 supplied, is used instead of the line point is on in the current | |
1292 buffer." | |
1293 (let ((start 0) | |
1294 (string (or string (buffer-substring (regi-pos 'bol) (regi-pos 'eol)))) | |
1295 nesting) | |
1296 (and | |
1297 (= start (or (string-match sc-citation-leader-regexp string start) -1)) | |
1298 (setq start (match-end 0)) | |
1299 (= start (or (string-match sc-citation-delimiter-regexp string start) -1)) | |
1300 (setq nesting (sc-submatch 0 string) | |
1301 start (match-end 0)) | |
1302 (= start (or (string-match sc-citation-separator-regexp string start) -1)) | |
1303 nesting))) | |
1304 | |
1305 (defun sc-add-citation-level () | |
1306 "Add a citation level for nested citation style w/ coersion." | |
1307 (let* ((nesting (sc-guess-nesting)) | |
1308 (citation (make-string (1+ (length nesting)) | |
1309 (string-to-char sc-citation-delimiter))) | |
1310 (prefix (concat sc-citation-leader citation sc-citation-separator))) | |
1311 (if (looking-at (sc-cite-regexp "")) | |
1312 (delete-region (match-beginning 0) (match-end 0))) | |
1313 (insert prefix) | |
1314 (sc-fill-if-different prefix))) | |
1315 | |
1316 (defun sc-cite-line (&optional citation) | |
1317 "Cite a single line of uncited text. | |
1318 Optional CITATION overrides any citation automatically selected." | |
1319 (if sc-fixup-whitespace-p | |
1320 (fixup-whitespace)) | |
1321 (let ((prefix (or citation | |
1322 (cdr (assoc "sc-citation" sc-mail-info)) | |
1323 sc-default-attribution))) | |
1324 (insert prefix) | |
1325 (sc-fill-if-different prefix)) | |
1326 nil) | |
1327 | |
1328 (defun sc-uncite-line () | |
1329 "Remove citation from current line." | |
1330 (let ((cited (looking-at (sc-cite-regexp)))) | |
1331 (if cited | |
1332 (delete-region (match-beginning 0) (match-end 0)))) | |
1333 nil) | |
1334 | |
1335 (defun sc-recite-line (regexp) | |
1336 "Remove citation matching REGEXP from current line and recite line." | |
1337 (let ((cited (looking-at (concat "^" regexp))) | |
1338 (prefix (cdr (assoc "sc-citation" sc-mail-info)))) | |
1339 (if cited | |
1340 (delete-region (match-beginning 0) (match-end 0))) | |
1341 (insert (or prefix sc-default-attribution)) | |
1342 (sc-fill-if-different prefix)) | |
1343 nil) | |
1344 | |
1345 ;; interactive functions | |
1346 (defun sc-cite-region (start end &optional confirm-p) | |
1347 "Cite a region delineated by START and END. | |
1348 If optional CONFIRM-P is non-nil, the attribution is confirmed before | |
1349 its use in the citation string. This function first runs | |
1350 `sc-pre-cite-hook'." | |
1351 (interactive "r\nP") | |
1352 (undo-boundary) | |
1353 (let ((frame (or (sc-scan-info-alist sc-cite-frame-alist) | |
1354 sc-default-cite-frame)) | |
1355 (sc-confirm-always-p (if confirm-p t sc-confirm-always-p))) | |
1356 (run-hooks 'sc-pre-cite-hook) | |
1357 (if (interactive-p) | |
1358 (sc-select-attribution)) | |
1359 (regi-interpret frame start end))) | |
1360 | |
1361 (defun sc-uncite-region (start end) | |
1362 "Uncite a region delineated by START and END. | |
1363 First runs `sc-pre-uncite-hook'." | |
1364 (interactive "r") | |
1365 (undo-boundary) | |
1366 (let ((frame (or (sc-scan-info-alist sc-uncite-frame-alist) | |
1367 sc-default-uncite-frame))) | |
1368 (run-hooks 'sc-pre-uncite-hook) | |
1369 (regi-interpret frame start end))) | |
1370 | |
1371 (defun sc-recite-region (start end) | |
1372 "Recite a region delineated by START and END. | |
1373 First runs `sc-pre-recite-hook'." | |
1374 (interactive "r") | |
1375 (let ((sc-confirm-always-p t)) | |
1376 (sc-select-attribution)) | |
1377 (undo-boundary) | |
1378 (let ((frame (or (sc-scan-info-alist sc-recite-frame-alist) | |
1379 sc-default-recite-frame))) | |
1380 (run-hooks 'sc-pre-recite-hook) | |
1381 (regi-interpret frame start end))) | |
1382 | |
1383 | |
1384 ;; ====================================================================== | |
1385 ;; building headers | |
1386 | |
1387 (defun sc-hdr (prefix field &optional sep return-nil-p) | |
1388 "Returns a concatenation of PREFIX and FIELD. | |
1389 If FIELD is not a string or is the empty string, the empty string will | |
1390 be returned. Optional third argument SEP is concatenated on the end if | |
1391 it is a string. Returns empty string, unless optional RETURN-NIL-P is | |
1392 non-nil." | |
1393 (if (and (stringp field) | |
1394 (not (string= field ""))) | |
1395 (concat prefix field (or sep "")) | |
1396 (and (not return-nil-p) ""))) | |
1397 | |
1398 (defun sc-whofrom () | |
1399 "Return the value of (sc-mail-field \"from\") or nil." | |
1400 (let ((sc-mumble nil)) | |
1401 (sc-mail-field "from"))) | |
1402 | |
1403 (defun sc-no-header () | |
1404 "Does nothing. Use this instead of nil to get a blank header." | |
1405 ()) | |
1406 | |
1407 (defun sc-no-blank-line-or-header() | |
1408 "Similar to `sc-no-header' except it removes the preceeding blank line." | |
1409 (if (not (bobp)) | |
1410 (if (and (eolp) | |
1411 (progn (forward-line -1) | |
1412 (or (looking-at mail-header-separator) | |
1413 (and (eq major-mode 'mh-letter-mode) | |
1414 (mh-in-header-p))))) | |
1415 (progn (forward-line) | |
1416 (let ((kill-lines-magic t)) | |
1417 (kill-line)))))) | |
1418 | |
1419 (defun sc-header-on-said () | |
1420 "\"On <date>, <from> said:\" unless: | |
1421 1. the \"from\" field cannot be found, in which case nothing is inserted; | |
1422 2. the \"date\" field is missing in which case only the from part is printed." | |
1423 (let ((sc-mumble "") | |
1424 (whofrom (sc-whofrom))) | |
1425 (if whofrom | |
1426 (insert sc-reference-tag-string | |
1427 (sc-hdr "On " (sc-mail-field "date") ", ") | |
1428 whofrom " said:\n")))) | |
1429 | |
1430 (defun sc-header-inarticle-writes () | |
1431 "\"In article <message-id>, <from> writes:\" | |
1432 Treats \"message-id\" and \"from\" fields similar to `sc-header-on-said'." | |
1433 (let ((sc-mumble "") | |
1434 (whofrom (sc-mail-field "from"))) | |
1435 (if whofrom | |
1436 (insert sc-reference-tag-string | |
1437 (sc-hdr "In article " (sc-mail-field "message-id") ", ") | |
1438 whofrom " writes:\n")))) | |
1439 | |
1440 (defun sc-header-regarding-adds () | |
1441 "\"Regarding <subject>; <from> adds:\" | |
1442 Treats \"subject\" and \"from\" fields similar to `sc-header-on-said'." | |
1443 (let ((sc-mumble "") | |
1444 (whofrom (sc-whofrom))) | |
1445 (if whofrom | |
1446 (insert sc-reference-tag-string | |
1447 (sc-hdr "Regarding " (sc-mail-field "subject") "; ") | |
1448 whofrom " adds:\n")))) | |
1449 | |
1450 (defun sc-header-attributed-writes () | |
1451 "\"<sc-attribution>\" == <sc-author> <address> writes: | |
1452 Treats these fields in a similar manner to `sc-header-on-said'." | |
1453 (let ((sc-mumble "") | |
1454 (whofrom (sc-whofrom))) | |
1455 (if whofrom | |
1456 (insert sc-reference-tag-string | |
1457 (sc-hdr "\"" (sc-mail-field "sc-attribution") "\" == ") | |
1458 (sc-hdr "" (sc-mail-field "sc-author") " ") | |
1459 (or (sc-hdr "<" (sc-mail-field "sc-from-address") ">" t) | |
1460 (sc-hdr "<" (sc-mail-field "sc-reply-address") ">" t) | |
1461 "") | |
1462 " writes:\n")))) | |
1463 | |
1464 (defun sc-header-author-writes () | |
1465 "<sc-author> writes:" | |
1466 (let ((sc-mumble "") | |
1467 (whofrom (sc-whofrom))) | |
1468 (if whofrom | |
1469 (insert sc-reference-tag-string | |
1470 (sc-hdr "" (sc-mail-field "sc-author")) | |
1471 " writes:\n")))) | |
1472 | |
1473 (defun sc-header-verbose () | |
1474 "Very verbose, some say gross." | |
1475 (let ((sc-mumble "") | |
1476 (whofrom (sc-whofrom)) | |
1477 (tag sc-reference-tag-string)) | |
1478 (if whofrom | |
1479 (insert (sc-hdr (concat tag "On ") (sc-mail-field "date") ",\n") | |
1480 (or (sc-hdr tag (sc-mail-field "sc-author") "\n" t) | |
1481 (concat tag whofrom "\n")) | |
1482 (sc-hdr (concat tag "from the organization of ") | |
1483 (sc-mail-field "organization") "\n") | |
1484 (let ((rtag (concat tag "who can be reached at: "))) | |
1485 (or (sc-hdr rtag (sc-mail-field "sc-from-address") "\n" t) | |
1486 (sc-hdr rtag (sc-mail-field "sc-reply-address") "\n" t) | |
1487 "")) | |
1488 (sc-hdr | |
1489 (concat tag "(whose comments are cited below with \"") | |
1490 (sc-mail-field "sc-citation") "\"),\n") | |
1491 (sc-hdr (concat tag "had this to say in article ") | |
1492 (sc-mail-field "message-id") "\n") | |
1493 (sc-hdr (concat tag "in newsgroups ") | |
1494 (sc-mail-field "newsgroups") "\n") | |
1495 (sc-hdr (concat tag "concerning the subject of ") | |
1496 (sc-mail-field "subject") "\n") | |
1497 (sc-hdr (concat tag "(see ") | |
1498 (sc-mail-field "references") | |
1499 " for more details)\n") | |
1500 )))) | |
1501 | |
1502 | |
1503 ;; ====================================================================== | |
1504 ;; header rewrites | |
1505 | |
1506 (defconst sc-electric-bufname " *sc-erefs* " | |
1507 "Supercite electric reference mode's buffer name.") | |
1508 (defvar sc-eref-style 0 | |
1509 "Current electric reference style.") | |
1510 | |
1511 (defun sc-valid-index-p (index) | |
1512 "Returns INDEX if it is a valid index into `sc-rewrite-header-list'. | |
1513 Otherwise returns nil." | |
1514 ;; a number, and greater than or equal to zero | |
1515 ;; less than or equal to the last index | |
1516 (and (natnump index) | |
1517 (< index (length sc-rewrite-header-list)) | |
1518 index)) | |
1519 | |
1520 (defun sc-eref-insert-selected (&optional nomsg) | |
1521 "Insert the selected reference header in the current buffer. | |
1522 Optional NOMSG, if non-nil, inhibits printing messages, unless an | |
1523 error occurs." | |
1524 (let ((ref (nth sc-eref-style sc-rewrite-header-list))) | |
1525 (condition-case err | |
1526 (progn | |
1527 (eval ref) | |
1528 (let ((lines (count-lines (point-min) (point-max)))) | |
1529 (or nomsg (message "Ref header %d [%d line%s]: %s" | |
1530 sc-eref-style lines | |
1531 (if (= lines 1) "" "s") | |
1532 ref)))) | |
1533 (void-function | |
1534 (progn (message | |
1535 "Symbol's function definition is void: %s (Header %d)" | |
1536 (car (cdr err)) sc-eref-style) | |
1537 (beep) | |
1538 )) | |
1539 ))) | |
1540 | |
1541 (defun sc-electric-mode (&optional arg) | |
1542 " | |
1543 Mode for viewing Supercite reference headers. Commands are: | |
1544 \n\\{sc-electric-mode-map} | |
1545 | |
1546 `sc-electric-mode' is not intended to be run interactively, but rather | |
1547 accessed through Supercite's electric reference feature. See | |
1548 `sc-insert-reference' for more details. Optional ARG is the initial | |
1549 header style to use, unless not supplied or invalid, in which case | |
1550 `sc-preferred-header-style' is used." | |
1551 | |
1552 (let ((info sc-mail-info)) | |
1553 | |
1554 (setq sc-eref-style | |
1555 (or (sc-valid-index-p arg) | |
1556 (sc-valid-index-p sc-preferred-header-style) | |
1557 0)) | |
1558 | |
1559 (get-buffer-create sc-electric-bufname) | |
1560 ;; set up buffer and enter command loop | |
1561 (save-excursion | |
1562 (save-window-excursion | |
1563 (pop-to-buffer sc-electric-bufname) | |
1564 (kill-all-local-variables) | |
1565 (let ((sc-mail-info info) | |
1566 (buffer-read-only t) | |
1567 (mode-name "SC Electric Refs") | |
1568 (major-mode 'sc-electric-mode)) | |
1569 (use-local-map sc-electric-mode-map) | |
1570 (sc-eref-show sc-eref-style) | |
1571 (run-hooks 'sc-electric-mode-hook) | |
1572 (recursive-edit) | |
1573 ))) | |
1574 | |
1575 (and sc-eref-style | |
1576 (sc-eref-insert-selected)) | |
1577 (kill-buffer sc-electric-bufname) | |
1578 )) | |
1579 | |
1580 ;; functions for electric reference mode | |
1581 (defun sc-eref-show (index) | |
1582 "Show reference INDEX in `sc-rewrite-header-list'." | |
1583 (let ((msg "No %ing reference headers in list.") | |
1584 (last (length sc-rewrite-header-list))) | |
1585 (setq sc-eref-style | |
1586 (cond | |
1587 ((sc-valid-index-p index) index) | |
1588 ((< index 0) | |
1589 (if sc-electric-circular-p | |
1590 (1- last) | |
1591 (progn (error msg "preced") 0))) | |
1592 ((>= index last) | |
1593 (if sc-electric-circular-p | |
1594 0 | |
1595 (progn (error msg "follow") (1- last)))) | |
1596 )) | |
1597 (save-excursion | |
1598 (set-buffer sc-electric-bufname) | |
1599 (let ((buffer-read-only nil)) | |
1600 (erase-buffer) | |
1601 (goto-char (point-min)) | |
1602 (sc-eref-insert-selected) | |
1603 ;; now shrink the window to just contain the electric reference | |
1604 ;; header. | |
1605 (let ((hdrlines (count-lines (point-min) (point-max))) | |
1606 (winlines (1- (window-height)))) | |
1607 (if (/= hdrlines winlines) | |
1608 (if (> hdrlines winlines) | |
1609 ;; we have to enlarge the window | |
1610 (enlarge-window (- hdrlines winlines)) | |
1611 ;; we have to shrink the window | |
1612 (shrink-window (- winlines (max hdrlines window-min-height))) | |
1613 ))) | |
1614 )))) | |
1615 | |
1616 (defun sc-eref-next () | |
1617 "Display next reference in other buffer." | |
1618 (interactive) | |
1619 (sc-eref-show (1+ sc-eref-style))) | |
1620 | |
1621 (defun sc-eref-prev () | |
1622 "Display previous reference in other buffer." | |
1623 (interactive) | |
1624 (sc-eref-show (1- sc-eref-style))) | |
1625 | |
1626 (defun sc-eref-setn () | |
1627 "Set reference header selected as preferred." | |
1628 (interactive) | |
1629 (setq sc-preferred-header-style sc-eref-style) | |
1630 (message "Preferred reference style set to header %d." sc-eref-style)) | |
1631 | |
1632 (defun sc-eref-goto (refnum) | |
1633 "Show reference style indexed by REFNUM. | |
1634 If REFNUM is an invalid index, don't go to that reference and return | |
1635 nil." | |
1636 (interactive "NGoto Reference: ") | |
1637 (if (sc-valid-index-p refnum) | |
1638 (sc-eref-show refnum) | |
1639 (error "Invalid reference: %d. (Range: [%d .. %d])" | |
1640 refnum 0 (1- (length sc-rewrite-header-list))) | |
1641 )) | |
1642 | |
1643 (defun sc-eref-jump () | |
1644 "Set reference header to preferred header." | |
1645 (interactive) | |
1646 (sc-eref-show sc-preferred-header-style)) | |
1647 | |
1648 (defun sc-eref-abort () | |
1649 "Exit from electric reference mode without inserting reference." | |
1650 (interactive) | |
1651 (setq sc-eref-style nil) | |
1652 (exit-recursive-edit)) | |
1653 | |
1654 (defun sc-eref-exit () | |
1655 "Exit from electric reference mode and insert selected reference." | |
1656 (interactive) | |
1657 (exit-recursive-edit)) | |
1658 | |
1659 (defun sc-insert-reference (arg) | |
1660 "Insert, at point, a reference header in the body of the reply. | |
1661 Numeric ARG indicates which header style from `sc-rewrite-header-list' | |
1662 to use when rewriting the header. No supplied ARG indicates use of | |
1663 `sc-preferred-header-style'. | |
1664 | |
1665 With just `\\[universal-argument]', electric reference insert mode is | |
1666 entered, regardless of the value of `sc-electric-references-p'. See | |
1667 `sc-electric-mode' for more information." | |
1668 (interactive "P") | |
1669 (if (consp arg) | |
1670 (sc-electric-mode) | |
1671 (let ((preference (or (sc-valid-index-p arg) | |
1672 (sc-valid-index-p sc-preferred-header-style) | |
1673 sc-preferred-header-style | |
1674 0))) | |
1675 (if sc-electric-references-p | |
1676 (sc-electric-mode preference) | |
1677 (sc-eref-insert-selected t) | |
1678 )))) | |
1679 | |
1680 | |
1681 ;; ====================================================================== | |
1682 ;; variable toggling | |
1683 | |
1684 (defun sc-raw-mode-toggle () | |
1685 "Toggle, in one fell swoop, two important SC variables: | |
1686 `sc-fixup-whitespace-p' and `sc-auto-fill-region-p'" | |
1687 (interactive) | |
1688 (setq sc-fixup-whitespace-p (not sc-fixup-whitespace-p) | |
1689 sc-auto-fill-region-p (not sc-auto-fill-region-p)) | |
1690 (sc-set-mode-string) | |
1691 (set-buffer-modified-p (buffer-modified-p))) | |
1692 | |
1693 (defun sc-toggle-var (variable) | |
1694 "Boolean toggle VARIABLE's value. | |
1695 VARIABLE must be a bound symbol. Nil values change to t, non-nil | |
1696 values are changed to nil." | |
1697 (message "%s changed from %s to %s" | |
1698 variable (symbol-value variable) | |
1699 (set-variable variable (not (eval-expression variable)))) | |
1700 (sc-set-mode-string)) | |
1701 | |
1702 (defun sc-set-variable (var) | |
1703 "Set the Supercite VARIABLE. | |
1704 This function mimics `set-variable', except that the variable to set | |
1705 is determined non-interactively. The value is queried for in the | |
1706 minibuffer exactly the same way that `set-variable' does it. | |
1707 | |
1708 You can see the current value of the variable when the minibuffer is | |
1709 querying you by typing `C-h'. Note that the format is changed | |
1710 slightly from that used by `set-variable' -- the current value is | |
1711 printed just after the variable's name instead of at the bottom of the | |
1712 help window." | |
1713 (let* ((minibuffer-help-form | |
1714 '(funcall myhelp)) | |
1715 (myhelp | |
1716 (function | |
1717 (lambda () | |
1718 (with-output-to-temp-buffer "*Help*" | |
1719 (prin1 var) | |
1720 (if (boundp var) | |
1721 (let ((print-length 20)) | |
1722 (princ "\t(Current value: ") | |
1723 (prin1 (symbol-value var)) | |
1724 (princ ")"))) | |
1725 (princ "\n\nDocumentation:\n") | |
1726 (princ (substring (documentation-property | |
1727 var | |
1728 'variable-documentation) | |
1729 1)) | |
1730 nil))))) | |
1731 (set var (eval-minibuffer (format "Set %s to value: " var)))) | |
1732 (sc-set-mode-string)) | |
1733 | |
1734 (defmacro sc-toggle-symbol (rootname) | |
1735 (list 'defun (intern (concat "sc-T-" rootname)) '() | |
1736 (list 'interactive) | |
1737 (list 'sc-toggle-var | |
1738 (list 'quote (intern (concat "sc-" rootname "-p")))))) | |
1739 | |
1740 (defmacro sc-setvar-symbol (rootname) | |
1741 (list 'defun (intern (concat "sc-S-" rootname)) '() | |
1742 (list 'interactive) | |
1743 (list 'sc-set-variable | |
1744 (list 'quote (intern (concat "sc-" rootname)))))) | |
1745 | |
1746 (sc-toggle-symbol "confirm-always") | |
1747 (sc-toggle-symbol "downcase") | |
1748 (sc-toggle-symbol "electric-references") | |
1749 (sc-toggle-symbol "auto-fill-region") | |
1750 (sc-toggle-symbol "mail-nuke-blank-lines") | |
1751 (sc-toggle-symbol "nested-citation") | |
1752 (sc-toggle-symbol "electric-circular") | |
1753 (sc-toggle-symbol "use-only-preferences") | |
1754 (sc-toggle-symbol "fixup-whitespace") | |
1755 | |
1756 (sc-setvar-symbol "preferred-attribution-list") | |
1757 (sc-setvar-symbol "preferred-header-style") | |
1758 (sc-setvar-symbol "mail-nuke-mail-headers") | |
1759 (sc-setvar-symbol "mail-header-nuke-list") | |
1760 (sc-setvar-symbol "cite-region-limit") | |
1761 | |
1762 (defun sc-T-describe () | |
1763 " | |
1764 | |
1765 Supercite provides a number of key bindings which simplify the process | |
1766 of setting or toggling certain variables controlling its operation. | |
1767 | |
1768 Note on function names in this list: all functions of the form | |
1769 `sc-S-<name>' actually call `sc-set-variable' on the corresponding | |
1770 `sc-<name>' variable. All functions of the form `sc-T-<name>' call | |
1771 `sc-toggle-var' on the corresponding `sc-<name>-p' variable. | |
1772 | |
1773 \\{sc-T-keymap}" | |
1774 (interactive) | |
1775 (describe-function 'sc-T-describe)) | |
1776 | |
1777 (defun sc-set-mode-string () | |
1778 "Update the minor mode string to show state of Supercite." | |
1779 (setq sc-mode-string | |
1780 (concat " SC" | |
1781 (if (or sc-auto-fill-region-p | |
1782 sc-fixup-whitespace-p) | |
1783 ":" "") | |
1784 (if sc-auto-fill-region-p "f" "") | |
1785 (if sc-fixup-whitespace-p "w" "") | |
1786 ))) | |
1787 | |
1788 | |
1789 ;; ====================================================================== | |
1790 ;; published interface to mail and news readers | |
1791 | |
1792 (defun sc-cite-original () | |
1793 "Workhorse citing function which performs the initial citation. | |
1794 This is callable from the various mail and news readers' reply | |
1795 function according to the agreed upon standard. See `\\[sc-describe]' | |
1796 for more details. `sc-cite-original' does not do any yanking of the | |
1797 original message but it does require a few things: | |
1798 | |
1799 1) The reply buffer is the current buffer. | |
1800 | |
1801 2) The original message has been yanked and inserted into the | |
1802 reply buffer. | |
1803 | |
1804 3) Verbose mail headers from the original message have been | |
1805 inserted into the reply buffer directly before the text of the | |
1806 original message. | |
1807 | |
1808 4) Point is at the beginning of the verbose headers. | |
1809 | |
1810 5) Mark is at the end of the body of text to be cited. | |
1811 | |
1812 For Emacs 19's, the region need not be active (and typically isn't | |
1813 when this function is called. Also, the hook `sc-pre-hook' is run | |
1814 before, and `sc-post-hook' is run after the guts of this function." | |
1815 (run-hooks 'sc-pre-hook) | |
1816 | |
1817 ;; before we do anything, we want to insert the supercite keymap so | |
1818 ;; we can proceed from here | |
1819 (and sc-mode-map-prefix | |
1820 (local-set-key sc-mode-map-prefix sc-mode-map)) | |
1821 | |
1822 ;; hack onto the minor mode alist, if it hasn't been done before, | |
1823 ;; then turn on the minor mode. also, set the minor mode string with | |
1824 ;; the values of fill and fixup whitespace variables | |
1825 (if (not (get 'minor-mode-alist 'sc-minor-mode)) | |
1826 (progn | |
1827 (put 'minor-mode-alist 'sc-minor-mode 'sc-minor-mode) | |
1828 (setq minor-mode-alist | |
1829 (cons '(sc-minor-mode sc-mode-string) minor-mode-alist)) | |
1830 )) | |
1831 (setq sc-minor-mode t) | |
1832 (sc-set-mode-string) | |
1833 | |
1834 (undo-boundary) | |
1835 | |
1836 ;; grab point and mark since the region is probably not active when | |
1837 ;; this function gets automatically called. we want point to be a | |
1838 ;; mark so any deleting before point works properly | |
1839 (let* ((zmacs-regions nil) ; for XEmacs | |
1840 (mark-active t) ; for FSFmacs | |
1841 (point (point-marker)) | |
1842 (mark (copy-marker (mark-marker)))) | |
1843 | |
1844 ;; make sure point comes before mark, not all functions are | |
1845 ;; interactive "r" | |
1846 (if (< mark point) | |
1847 (let ((tmp point)) | |
1848 (setq point mark | |
1849 mark tmp))) | |
1850 | |
1851 ;; first process mail headers, and populate sc-mail-info | |
1852 (sc-mail-process-headers point mark) | |
1853 | |
1854 ;; now get possible attributions | |
1855 (sc-attribs-chop-address (or (sc-mail-field "from") | |
1856 (sc-mail-field "reply") | |
1857 (sc-mail-field "reply-to") | |
1858 (sc-mail-field "sender"))) | |
1859 ;; select the attribution | |
1860 (sc-select-attribution) | |
1861 | |
1862 ;; cite the region, but first check the value of sc-cite-region-limit | |
1863 (let ((linecnt (count-lines point mark))) | |
1864 (and sc-cite-region-limit | |
1865 (if (or (not (numberp sc-cite-region-limit)) | |
1866 (<= linecnt sc-cite-region-limit)) | |
1867 (progn | |
1868 ;; cite the region and insert the header rewrite | |
1869 (sc-cite-region point mark) | |
1870 (goto-char point) | |
1871 (let ((sc-eref-style (or sc-preferred-header-style 0))) | |
1872 (if sc-electric-references-p | |
1873 (sc-electric-mode sc-eref-style) | |
1874 (sc-eref-insert-selected t)))) | |
1875 (beep) | |
1876 (message | |
1877 "Region not cited. %d lines exceeds sc-cite-region-limit: %d" | |
1878 linecnt sc-cite-region-limit)))) | |
1879 | |
1880 ;; finally, free the point-marker | |
1881 (set-marker point nil) | |
1882 (set-marker mark nil) | |
1883 ) | |
1884 (run-hooks 'sc-post-hook) | |
1885 ;; post hook could have changed the variables | |
1886 (sc-set-mode-string)) | |
1887 | |
1888 | |
1889 ;; ====================================================================== | |
1890 ;; bug reporting and miscellaneous commands | |
1891 | |
1892 (defun sc-open-line (arg) | |
1893 "Like `open-line', but insert the citation prefix at the front of the line. | |
1894 With numeric ARG, inserts that many new lines." | |
1895 (interactive "p") | |
1896 (save-excursion | |
1897 (let ((start (point)) | |
1898 (prefix (or (progn (beginning-of-line) | |
1899 (if (looking-at (sc-cite-regexp)) | |
1900 (sc-submatch 0))) | |
1901 ""))) | |
1902 (goto-char start) | |
1903 (open-line arg) | |
1904 (forward-line 1) | |
1905 (while (< 0 arg) | |
1906 (insert prefix) | |
1907 (forward-line 1) | |
1908 (setq arg (1- arg)) | |
1909 )))) | |
1910 | |
1911 (defun sc-insert-citation (arg) | |
1912 "Insert citation string at beginning of current line if not already cited. | |
1913 With `\\[universal-argument]' insert citation even if line is already | |
1914 cited." | |
1915 (interactive "P") | |
1916 (save-excursion | |
1917 (beginning-of-line) | |
1918 (if (or (not (looking-at (sc-cite-regexp))) | |
1919 (looking-at "^[ \t]*$") | |
1920 (consp arg)) | |
1921 (insert (sc-mail-field "sc-citation")) | |
1922 (error "Line is already cited.")))) | |
1923 | |
1924 (defun sc-version (arg) | |
1925 "Echo the current version of Supercite in the minibuffer. | |
1926 With \\[universal-argument] (universal-argument), or if run non-interactively, | |
1927 inserts the version string in the current buffer instead." | |
1928 (interactive "P") | |
1929 (let ((verstr (format "Using Supercite.el %s" sc-version))) | |
1930 (if (or (consp arg) | |
1931 (not (interactive-p))) | |
1932 (insert "`sc-version' says: " verstr) | |
1933 (message verstr)))) | |
1934 | |
1935 (defun sc-describe () | |
1936 " | |
1937 Supercite is a package which provides a flexible mechanism for citing | |
1938 email and news replies. Please see the associated texinfo file for | |
1939 more information." | |
1940 (interactive) | |
1941 (describe-function 'sc-describe)) | |
1942 | |
1943 (defun sc-submit-bug-report () | |
1944 "Submit a bug report on Supercite via mail." | |
1945 (interactive) | |
1946 (require 'reporter) | |
1947 (and | |
1948 (y-or-n-p "Do you want to submit a report on Supercite? ") | |
1949 (reporter-submit-bug-report | |
1950 sc-help-address | |
1951 (concat "Supercite version " sc-version) | |
1952 (list | |
1953 'sc-attrib-selection-list | |
1954 'sc-auto-fill-region-p | |
1955 'sc-blank-lines-after-headers | |
1956 'sc-citation-leader | |
1957 'sc-citation-delimiter | |
1958 'sc-citation-separator | |
1959 'sc-citation-leader-regexp | |
1960 'sc-citation-root-regexp | |
1961 'sc-citation-nonnested-root-regexp | |
1962 'sc-citation-delimiter-regexp | |
1963 'sc-citation-separator-regexp | |
1964 'sc-cite-region-limit | |
1965 'sc-confirm-always-p | |
1966 'sc-default-attribution | |
1967 'sc-default-author-name | |
1968 'sc-downcase-p | |
1969 'sc-electric-circular-p | |
1970 'sc-electric-references-p | |
1971 'sc-fixup-whitespace-p | |
1972 'sc-mail-warn-if-non-rfc822-p | |
1973 'sc-mumble | |
1974 'sc-name-filter-alist | |
1975 'sc-nested-citation-p | |
1976 'sc-nuke-mail-headers | |
1977 'sc-nuke-mail-header-list | |
1978 'sc-preferred-attribution-list | |
1979 'sc-preferred-header-style | |
1980 'sc-reference-tag-string | |
1981 'sc-rewrite-header-list | |
1982 'sc-titlecue-regexp | |
1983 'sc-use-only-preference-p | |
1984 )))) | |
1985 | |
1986 | |
1987 ;; useful stuff | |
1988 (provide 'supercite) | |
1989 (run-hooks 'sc-load-hook) | |
1990 | |
1991 ;;; supercite.el ends here |