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