1 ;;; message.el --- composing mail and news messages
2 ;; Copyright (C) 1996 Free Software Foundation, Inc.
4 ;; Author: Lars Magne Ingebrigtsen <larsi@ifi.uio.no>
5 ;; Keywords: mail, news
7 ;; This file is part of GNU Emacs.
9 ;; GNU Emacs is free software; you can redistribute it and/or modify
10 ;; it under the terms of the GNU General Public License as published by
11 ;; the Free Software Foundation; either version 2, or (at your option)
14 ;; GNU Emacs is distributed in the hope that it will be useful,
15 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
16 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 ;; GNU General Public License for more details.
19 ;; You should have received a copy of the GNU General Public License
20 ;; along with GNU Emacs; see the file COPYING. If not, write to the
21 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
22 ;; Boston, MA 02111-1307, USA.
26 ;; This mode provides mail-sending facilities from within Emacs. It
27 ;; consists mainly of large chunks of code from the sendmail.el,
28 ;; gnus-msg.el and rnewspost.el files.
34 (require 'mail-header)
36 (defvar message-fcc-handler-function 'rmail-output
37 "*A function called to save outgoing articles.
38 This function will be called with the same of the file to store the
39 article in. The default function is `rmail-output' which saves in Unix
42 (defvar message-courtesy-message
43 "The following message is a courtesy copy of an article\nthat has been posted as well.\n\n"
44 "*This is inserted at the start of a mailed copy of a posted message.
45 If this variable is nil, no such courtesy message will be added.")
47 (defvar message-ignored-bounced-headers "^\\(Received\\):"
48 "*Regexp that matches headers to be removed in resent bounced mail.")
50 (defvar message-from-style 'angles
51 "*Specifies how \"From\" headers look.
53 If `nil', they contain just the return address like:
55 If `parens', they look like:
56 king@grassland.com (Elvis Parsley)
57 If `angles', they look like:
58 Elvis Parsley <king@grassland.com>")
60 (defvar message-syntax-checks
61 '(subject-cmsg multiple-headers sendsys message-id from
62 long-lines control-chars size new-text
63 redirected-followup signature approved sender
64 empty empty-headers message-id from subject)
65 "In non-nil, message will attempt to run some checks on outgoing posts.
66 If this variable is t, message will check everything it can. If it is
67 a list, then those elements in that list will be checked.")
69 (defvar message-required-news-headers
70 '(From Date Newsgroups Subject Message-ID Organization Lines
71 (optional . X-Newsreader))
72 "*Headers to be generated or prompted for when posting an article.
73 RFC977 and RFC1036 require From, Date, Newsgroups, Subject,
74 Message-ID. Organization, Lines, In-Reply-To, Expires, and
75 X-Newsreader are optional. If don't you want message to insert some
76 header, remove it from this list.")
78 (defvar message-required-mail-headers
79 '(From Date To Subject (optional . In-Reply-To) Message-ID Lines
80 (optional . X-Mailer))
81 "*Headers to be generated or prompted for when mailing a message.
82 RFC822 required that From, Date, To, Subject and Message-ID be
83 included. Organization, Lines and X-Mailer are optional.")
85 (defvar message-deletable-headers '(Message-ID Date)
86 "*Headers to be deleted if they already exists and were generated by message previously.")
88 (defvar message-ignored-news-headers
89 "^NNTP-Posting-Host:\\|^Xref:\\|^Bcc:\\|^Gcc:"
90 "*Regexp of headers to be removed unconditionally before posting.")
92 (defvar message-ignored-supersedes-headers
93 "^Path:\\|^Date\\|^NNTP-Posting-Host:\\|^Xref:\\|^Lines:\\|^Received:\\|^X-From-Line:\\|Return-Path:"
94 "*Header lines matching this regexp will be deleted before posting.
95 It's best to delete old Path and Date headers before posting to avoid
98 (defvar message-signature-separator "^-- *$"
99 "Regexp matching signature separator.")
101 (defvar message-interactive nil
102 "Non-nil means when sending a message wait for and display errors.
103 nil means let mailer mail back a message to report errors.")
105 (defvar gnus-local-organization)
106 (defvar message-user-organization
107 (if (boundp 'gnus-local-organization)
108 gnus-local-organization t)
109 "*String to be used as an Organization header.
110 If t, use `message-user-organization-file'.")
112 (defvar message-user-organization-file "/usr/lib/news/organization"
113 "*Local news organization file.")
115 (defvar message-autosave-directory "~/Mail/drafts/"
116 "*Directory where message autosaves buffers.
117 If nil, message won't autosave.")
119 (defvar message-forward-start-separator
120 "------- Start of forwarded message -------\n"
121 "*Delimiter inserted before forwarded messages.")
123 (defvar message-forward-end-separator
124 "------- End of forwarded message -------\n"
125 "*Delimiter inserted after forwarded messages.")
127 (defvar message-signature-before-forwarded-message t
128 "*If non-nil, put the signature before any included forwarded message.")
130 (defvar message-included-forward-headers
131 "^From:\\|^Newsgroups:\\|^Subject:\\|^Date:\\|^Followup-To:\\|^Reply-To:\\|^Organization:\\|^Summary:\\|^Keywords:\\|^To:\\|^Cc:\\|^Posted-To:\\|^Mail-Copies-To:\\|^Apparently-To:\\|^Gnus-Warning:\\|^Resent-\\|^Message-ID:\\|^References:"
132 "*Regexp matching headers to be included in forwarded messages.")
134 (defvar message-ignored-resent-headers "^Return-receipt"
135 "*All headers that match this regexp will be deleted when resending a message.")
138 (defvar message-ignored-cited-headers "."
139 "Delete these headers from the messages you yank.")
141 ;; Useful to set in site-init.el
143 (defvar message-send-mail-function 'message-send-mail
144 "Function to call to send the current buffer as mail.
145 The headers should be delimited by a line whose contents match the
146 variable `message-header-separator'.")
148 (defvar message-send-news-function 'message-send-news
149 "Function to call to send the current buffer as news.
150 The headers should be delimited by a line whose contents match the
151 variable `message-header-separator'.")
153 (defvar message-reply-to-function nil
154 "Function that should return a list of headers.")
156 (defvar message-wide-reply-to-function nil
157 "Function that should return a list of headers.")
159 (defvar message-followup-to-function nil
160 "Function that should return a list of headers.")
162 (defvar message-use-followup-to 'ask
163 "*Specifies what to do with Followup-To header.
164 If nil, ignore the header. If it is t, use its value, but ignore
165 \"poster\". If it is the symbol `ask', query the user whether to
166 ignore the \"poster\" value. If it is the symbol `use', always use
169 (defvar message-post-method
170 (cond ((boundp 'gnus-post-method)
172 ((boundp 'gnus-select-method)
175 "Method used to post news.")
177 (defvar message-generate-headers-first nil
178 "*If non-nil, generate all possible headers before composing.")
181 (defvar message-header-separator "--text follows this line--"
182 "*Line used to separate headers from text in messages being composed.")
185 (defvar message-alias-file nil
186 "*If non-nil, the name of a file to use instead of `/usr/lib/aliases'.
187 This file defines aliases to be expanded by the mailer; this is a different
188 feature from that of defining aliases in `.mailrc' to be expanded in Emacs.
189 This variable has no effect unless your system uses sendmail as its mailer.")
192 (defvar message-personal-alias-file "~/.mailrc"
193 "*If non-nil, the name of the user's personal mail alias file.
194 This file typically should be in same format as the `.mailrc' file used by
195 the `Mail' or `mailx' program.
196 This file need not actually exist.")
198 (defvar message-setup-hook nil
199 "Normal hook, run each time a new outgoing message is initialized.
200 The function `message-setup' runs this hook.")
202 (defvar message-header-setup-hook nil
203 "Hook called narrowed to the headers when setting up a message buffer.")
205 (defvar message-citation-line-function 'message-insert-citation-line
206 "*Function called to insert the \"Whomever writes:\" line.")
208 (defvar message-aliases t
209 "Alist of mail address aliases.
210 If t, initialized from your mail aliases file.
211 \(The file's name is normally `~/.mailrc', but your MAILRC environment
212 variable can override that name.)
213 The alias definitions in the file have this form:
214 alias ALIAS MEANING")
216 (defvar message-alias-modtime nil
217 "The modification time of your mail alias file when it was last examined.")
219 (defvar message-yank-prefix "> "
220 "*Prefix inserted on the lines of yanked messages.
221 nil means use indentation.")
223 (defvar message-indentation-spaces 3
224 "*Number of spaces to insert at the beginning of each cited line.
225 Used by `message-yank-original' via `message-yank-cite'.")
227 (defvar message-indent-citation-function 'message-indent-citation
228 "*Function for modifying a citation just inserted in the mail buffer.
229 This can also be a list of functions. Each function can find the
230 citation between (point) and (mark t). And each function should leave
231 point and mark around the citation text as modified.")
233 (defvar message-abbrevs-loaded nil)
235 (autoload 'build-mail-aliases "mailalias"
236 "Read mail aliases from user's personal aliases file and set `mail-aliases'."
239 (autoload 'expand-mail-aliases "mailalias"
240 "Expand all mail aliases in suitable header fields found between BEG and END.
241 Suitable header fields are `To', `Cc' and `Bcc' and their `Resent-' variants.
242 Optional second arg EXCLUDE may be a regular expression defining text to be
243 removed from alias expansions."
246 (defvar message-signature t
247 "*String to be inserted at the and the the message buffer.
248 If t, the `message-signature-file' file will be inserted instead.
249 If a function, the result from the function will be used instead.
250 If a form, the result from the form will be used instead.")
252 (defvar message-signature-file "~/.signature"
253 "*File containing the text inserted at end of mail buffer.")
255 (defvar message-distribution-function nil
256 "*Function called to return a Distribution header.")
258 (defvar message-expires 14
259 "*Number of days before your article expires.")
261 (defvar message-user-path nil
262 "If nil, use the NNTP server name in the Path header.
263 If stringp, use this; if non-nil, use no host name (user name only).")
265 (defvar message-generic-domain nil
266 "If nil, the full host name will be the system name prepended to the domain name.
267 If this is a string, the full host name will be this string.
268 If this is non-nil, non-string, the domain name will be used as the
271 (defvar message-reply-buffer nil)
272 (defvar message-reply-headers nil)
273 (defvar message-newsreader nil)
274 (defvar message-mailer nil)
275 (defvar message-sent-message-via nil)
276 (defvar message-checksum nil)
277 (defvar message-send-actions nil
278 "A list of actions to be performed upon successful sending of a message.")
280 (defvar message-default-headers nil
281 "*A string containing header lines to be inserted in outgoing messages.
282 It is inserted before you edit the message, so you can edit or delete
285 (defvar message-default-mail-headers nil
286 "*A string of header lines to be inserted in outgoing mails.")
288 (defvar message-default-news-headers nil
289 "*A string of header lines to be inserted in outgoing news articles.")
291 ;; Note: could use /usr/ucb/mail instead of sendmail;
292 ;; options -t, and -v if not interactive.
293 (defvar message-mailer-swallows-blank-line
294 (if (and (string-match "sparc-sun-sunos\\(\\'\\|[^5]\\)"
295 system-configuration)
296 (file-readable-p "/etc/sendmail.cf")
297 (let ((buffer (get-buffer-create " *temp*")))
301 (insert-file-contents "/etc/sendmail.cf")
302 (goto-char (point-min))
303 (let ((case-fold-search nil))
304 (re-search-forward "^OR\\>" nil t)))
305 (kill-buffer buffer))))
306 ;; According to RFC822, "The field-name must be composed of printable
307 ;; ASCII characters (i.e. characters that have decimal values between
308 ;; 33 and 126, except colon)", i.e. any chars except ctl chars,
310 '(looking-at "[ \t]\\|[][!\"#$%&'()*+,-./0-9;<=>?@A-Z\\\\^_`a-z{|}~]+:"))
311 "Set this non-nil if the system's mailer runs the header and body together.
312 \(This problem exists on Sunos 4 when sendmail is run in remote mode.)
313 The value should be an expression to test whether the problem will
316 (defvar message-mode-syntax-table
317 (let ((table (copy-syntax-table text-mode-syntax-table)))
318 (modify-syntax-entry ?% ". " table)
320 "Syntax table used while in message mode.")
322 (defvar message-font-lock-keywords
323 (let* ((cite-prefix "A-Za-z") (cite-suffix (concat cite-prefix "0-9_.@-")))
324 (list '("^To:" . font-lock-function-name-face)
325 '("^B?CC:\\|^Reply-To:" . font-lock-keyword-face)
326 '("^\\(Subject:\\)[ \t]*\\(.+\\)?"
327 (1 font-lock-comment-face) (2 font-lock-type-face nil t))
328 (list (concat "^\\(" (regexp-quote message-header-separator) "\\)$")
329 1 'font-lock-comment-face)
330 (cons (concat "^[ \t]*"
331 "\\([" cite-prefix "]+[" cite-suffix "]*\\)?"
333 'font-lock-reference-face)
334 '("^\\(X-[A-Za-z0-9-]+\\|In-reply-to\\):.*"
335 . font-lock-string-face)))
336 "Additional expressions to highlight in Mail mode.")
338 (defvar message-send-hook nil
339 "Hook run before sending messages.")
341 (defvar message-sent-hook nil
342 "Hook run after sending messages.")
344 (defvar message-header-format-alist
346 (To . message-fill-header)
347 (Cc . message-fill-header)
358 (References . message-fill-header)
361 "Alist used for formatting headers.")
366 ;;; Utility functions.
369 (defun message-point-at-bol ()
370 "Return point at the beginning of the line."
377 (defun message-point-at-eol ()
378 "Return point at the end of the line."
385 ;; Delete the current line (and the next N lines.);
386 (defmacro message-delete-line (&optional n)
387 `(delete-region (progn (beginning-of-line) (point))
388 (progn (forward-line ,(or n 1)) (point))))
390 (defun message-tokenize-header (header &optional separator)
391 "Split HEADER into a list of header elements.
392 \",\" is used as the separator."
394 (separator (or separator ","))
396 (format "[ \t]*\\([^%s]+\\)?\\([%s]+\\|\\'\\)" separator separator))
398 (while (and (string-match regexp header beg)
399 (< beg (length header)))
400 (when (match-beginning 1)
401 (push (match-string 1 header) elems))
402 (setq beg (match-end 0)))
405 (defun message-fetch-reply-field (header)
406 "Fetch FIELD from the message we're replying to."
407 (when (and message-reply-buffer
408 (buffer-name message-reply-buffer))
410 (set-buffer message-reply-buffer)
411 (mail-fetch-field header))))
413 (defun message-set-work-buffer ()
414 (if (get-buffer " *message work*")
416 (set-buffer " *message work*")
418 (set-buffer (get-buffer-create " *message work*"))
419 (kill-all-local-variables)
420 (buffer-disable-undo (current-buffer))))
422 (defun message-functionp (form)
423 "Return non-nil if FORM is funcallable."
424 (or (and (symbolp form) (fboundp form))
425 (and (listp form) (eq (car form) 'lambda))))
427 (defun message-strip-subject-re (subject)
428 "Remove \"Re:\" from subject lines."
429 (if (string-match "^[Rr][Ee]: *" subject)
430 (substring subject (match-end 0))
433 (defun message-remove-header (header &optional is-regexp first reverse)
434 "Remove HEADER in the narrowed buffer.
435 If REGEXP, HEADER is a regular expression.
436 If FIRST, only remove the first instance of the header.
437 Return the number of headers removed."
438 (goto-char (point-min))
439 (let ((regexp (if is-regexp header (concat "^" header ":")))
443 (while (and (not (eobp))
446 (not (looking-at regexp))
454 ;; There might be a continuation header, so we have to search
455 ;; until we find a new non-continuation line.
458 (if (re-search-forward "^[^ \t]" nil t)
459 (goto-char (match-beginning 0))
462 (if (re-search-forward "^[^ \t]" nil t)
463 (goto-char (match-beginning 0))
467 (defun message-narrow-to-headers ()
468 "Narrow the buffer to the head of the message."
471 (goto-char (point-min))
472 (if (re-search-forward
473 (concat "^" (regexp-quote message-header-separator) "\n") nil t)
476 (goto-char (point-min)))
478 (defun message-narrow-to-head ()
479 "Narrow the buffer to the head of the message."
482 (goto-char (point-min))
483 (if (search-forward "\n\n" nil 1)
486 (goto-char (point-min)))
488 (defun message-news-p ()
489 "Say whether the current buffer contains a news message."
492 (message-narrow-to-headers)
493 (mail-fetch-field "newsgroups"))))
495 (defun message-mail-p ()
496 "Say whether the current buffer contains a mail message."
499 (message-narrow-to-headers)
500 (or (mail-fetch-field "to")
501 (mail-fetch-field "cc")
502 (mail-fetch-field "bcc")))))
512 (defvar message-mode-map nil)
514 (unless message-mode-map
515 (setq message-mode-map (nconc (make-sparse-keymap) text-mode-map))
516 (define-key message-mode-map "\C-c?" 'describe-mode)
518 (define-key message-mode-map "\C-c\C-f\C-t" 'message-goto-to)
519 (define-key message-mode-map "\C-c\C-f\C-b" 'message-goto-bcc)
520 (define-key message-mode-map "\C-c\C-f\C-f" 'message-goto-fcc)
521 (define-key message-mode-map "\C-c\C-f\C-c" 'message-goto-cc)
522 (define-key message-mode-map "\C-c\C-f\C-s" 'message-goto-subject)
523 (define-key message-mode-map "\C-c\C-f\C-r" 'message-goto-reply-to)
524 (define-key message-mode-map "\C-c\C-f\C-n" 'message-goto-newsgroups)
525 (define-key message-mode-map "\C-c\C-f\C-d" 'message-goto-distribution)
526 (define-key message-mode-map "\C-c\C-f\C-o" 'message-goto-followup-to)
527 (define-key message-mode-map "\C-c\C-f\C-k" 'message-goto-keywords)
528 (define-key message-mode-map "\C-c\C-f\C-u" 'message-goto-summary)
529 (define-key message-mode-map "\C-c\C-b" 'message-goto-body)
530 (define-key message-mode-map "\C-c\C-s" 'message-goto-signature)
532 (define-key message-mode-map "\C-c\C-t" 'message-insert-to)
533 (define-key message-mode-map "\C-c\C-n" 'message-insert-newsgroups)
535 (define-key message-mode-map "\C-c\C-y" 'message-yank-original)
536 (define-key message-mode-map "\C-c\C-q" 'message-fill-yanked-message)
537 (define-key message-mode-map "\C-c\C-w" 'message-insert-signature)
538 (define-key message-mode-map "\C-c\C-r" 'message-caesar-buffer-body)
540 (define-key message-mode-map "\C-c\C-c" 'message-send-and-exit)
541 (define-key message-mode-map "\C-c\C-s" 'message-send))
544 message-menu message-mode-map ""
546 ["Fill Citation" message-fill-yanked-message t]))
549 (defun message-mode ()
550 "Major mode for editing mail to be sent.
551 Like Text Mode but with these additional commands:
552 C-c C-s message-send (send the message) C-c C-c message-send-and-exit
553 C-c C-f move to a header field (and create it if there isn't):
554 C-c C-f C-t move to To: C-c C-f C-s move to Subject:
555 C-c C-f C-c move to CC: C-c C-f C-b move to BCC:
556 C-c C-f C-f move to FCC:
557 C-c C-t message-text (move to beginning of message text).
558 C-c C-w message-signature (insert `message-signature-file' file).
559 C-c C-y message-yank-original (insert current message, in Rmail).
560 C-c C-q message-fill-yanked-message (fill what was yanked).
561 C-c C-v message-sent-via (add a Sent-via field for each To or CC)."
563 (kill-all-local-variables)
564 (make-local-variable 'message-reply-buffer)
565 (setq message-reply-buffer nil)
566 (make-local-variable 'message-send-actions)
567 (set-syntax-table message-mode-syntax-table)
568 (use-local-map message-mode-map)
569 (setq local-abbrev-table text-mode-abbrev-table)
570 (setq major-mode 'message-mode)
571 (setq mode-name "Message")
572 (setq buffer-offer-save t)
573 (make-local-variable 'font-lock-defaults)
574 (setq font-lock-defaults '(message-font-lock-keywords t))
575 (make-local-variable 'paragraph-separate)
576 (make-local-variable 'paragraph-start)
577 (setq paragraph-start (concat (regexp-quote message-header-separator)
578 "$\\|[ \t]*[-_][-_][-_]+$\\|"
580 (setq paragraph-separate (concat (regexp-quote message-header-separator)
581 "$\\|[ \t]*[-_][-_][-_]+$\\|"
583 (make-local-variable 'message-reply-headers)
584 (setq message-reply-headers nil)
585 (make-local-variable 'message-newsreader)
586 (make-local-variable 'message-mailer)
587 (make-local-variable 'message-post-method)
588 (make-local-variable 'message-sent-message-via)
589 (setq message-sent-message-via nil)
590 (make-local-variable 'message-checksum)
591 (setq message-checksum nil)
592 (run-hooks 'text-mode-hook 'message-mode-hook))
597 ;;; Message mode commands
600 ;;; Movement commands
602 (defun message-goto-to ()
603 "Move point to the To header."
605 (message-position-on-field "To"))
607 (defun message-goto-subject ()
608 "Move point to the Subject header."
610 (message-position-on-field "Subject"))
612 (defun message-goto-cc ()
613 "Move point to the Cc header."
615 (message-position-on-field "Cc" "To"))
617 (defun message-goto-bcc ()
618 "Move point to the Bcc header."
620 (message-position-on-field "Bcc" "Cc" "To"))
622 (defun message-goto-fcc ()
623 "Move point to the Followup-To header."
625 (message-position-on-field "Fcc" "To" "Newsgroups"))
627 (defun message-goto-reply-to ()
628 "Move point to the Reply-To header."
630 (message-position-on-field "Reply-To" "Subject"))
632 (defun message-goto-newsgroups ()
633 "Move point to the Newsgroups header."
635 (message-position-on-field "Newsgroups"))
637 (defun message-goto-distribution ()
638 "Move point to the Distribution header."
640 (message-position-on-field "Distribution"))
642 (defun message-goto-followup-to ()
643 "Move point to the Followup-To header."
645 (message-position-on-field "Followup-To" "Newsgroups"))
647 (defun message-goto-keywords ()
648 "Move point to the Keywords header."
650 (message-position-on-field "Keywords" "Subject"))
652 (defun message-goto-summary ()
653 "Move point to the Summary header."
655 (message-position-on-field "Summary" "Subject"))
657 (defun message-goto-body ()
658 "Move point to the beginning of the message body."
660 (goto-char (point-min))
661 (search-forward (concat "\n" message-header-separator "\n") nil t))
665 (defun message-insert-to ()
666 "Insert a To header that points to the author of the message being replied to."
668 (message-position-on-field "To")
669 (insert (or (message-fetch-reply-field "reply-to")
670 (message-fetch-reply-field "from") "")))
672 (defun message-insert-newsgroups ()
673 "Insert the Newsgroups header from the article being replied to."
675 (message-position-on-field "newsgroups")
676 (insert (or (message-fetch-reply-field "newsgroups") "")))
682 (defun message-insert-signature ()
683 "Insert a signature."
686 (cond ((message-functionp message-signature)
687 (funcall message-signature))
688 ((listp message-signature)
689 (eval message-signature))
690 (t message-signature)))
692 (cond ((stringp signature)
694 ((and (eq t signature)
695 message-signature-file
696 (file-exists-p message-signature-file))
699 ;; Remove blank lines at the end of the message.
700 (goto-char (point-max))
701 (skip-chars-backward " \t\n")
703 (delete-region (point) (point-max))
704 ;; Insert the signature.
707 (insert-file-contents message-signature-file)
709 (goto-char (point-max))
710 (or (bolp) (insert "\n")))))
712 (defvar message-caesar-translation-table nil)
714 (defun message-caesar-region (b e &optional n)
715 "Caesar rotation of region by N, default 13, for decrypting netnews."
718 (min (point) (or (mark t) (point)))
719 (max (point) (or (mark t) (point)))
720 (when current-prefix-arg
721 (prefix-numeric-value current-prefix-arg))))
723 (setq n (if (numberp n) (mod n 26) 13)) ;canonize N
724 (unless (or (zerop n) ; no action needed for a rot of 0
725 (= b e)) ; no region to rotate
726 ;; We build the table, if necessary.
727 (when (or (not message-caesar-translation-table)
728 (/= (aref message-caesar-translation-table ?a) (+ ?a n)))
730 (table (make-string 256 0)))
731 (while (< (incf i) 256)
735 (substring table 0 ?A)
736 (substring table (+ ?A n) (+ ?A n (- 26 n)))
737 (substring table ?A (+ ?A n))
738 (substring table (+ ?A 26) ?a)
739 (substring table (+ ?a n) (+ ?a n (- 26 n)))
740 (substring table ?a (+ ?a n))
741 (substring table (+ ?a 26) 255)))
742 (setq message-caesar-translation-table table)))
743 ;; Then we translate the region. Do it this way to retain
746 (subst-char-in-region
747 b (1+ b) (char-after b)
748 (aref message-caesar-translation-table (char-after b)))
751 (defun message-caesar-buffer-body (&optional rotnum)
752 "Caesar rotates all letters in the current buffer by 13 places.
753 Used to encode/decode possibly offensive messages (commonly in net.jokes).
754 With prefix arg, specifies the number of places to rotate each letter forward.
755 Mail and USENET news headers are not rotated."
756 (interactive (if current-prefix-arg
757 (list (prefix-numeric-value current-prefix-arg))
761 (when (message-goto-body)
762 (narrow-to-region (point) (point-max)))
763 (message-caesar-region (point-min) (point-max) rotnum))))
765 (defun message-fill-yanked-message (&optional justifyp)
766 "Fill the paragraphs of a message yanked into this one.
767 Numeric argument means justify as well."
770 (goto-char (point-min))
771 (search-forward (concat "\n" message-header-separator "\n") nil t)
772 (fill-individual-paragraphs (point)
777 (defun message-indent-citation ()
778 "Modify text just inserted from a message to be cited.
779 The inserted text should be the region.
780 When this function returns, the region is again around the modified text.
782 Normally, indent each nonblank line `message-indentation-spaces' spaces.
783 However, if `message-yank-prefix' is non-nil, insert that prefix on each line."
784 (let ((start (point)))
785 ;; Remove unwanted headers.
786 (when message-ignored-cited-headers
790 (if (search-forward "\n\n" nil t)
793 (message-remove-header message-ignored-cited-headers t)))
794 ;; Do the indentation.
795 (if (null message-yank-prefix)
796 (indent-rigidly start (mark t) message-indentation-spaces)
799 (while (< (point) (mark t))
800 (insert message-yank-prefix)
804 (defun message-yank-original (&optional arg)
805 "Insert the message being replied to, if any (in rmail).
806 Puts point before the text and mark after.
807 Normally indents each nonblank line ARG spaces (default 3). However,
808 if `message-yank-prefix' is non-nil, insert that prefix on each line.
810 Just \\[universal-argument] as argument means don't indent, insert no
811 prefix, and don't delete any headers."
813 (when message-reply-buffer
814 (let ((start (point))
816 (when message-indent-citation-function
817 (if (listp message-indent-citation-function)
818 message-indent-citation-function
819 (list message-indent-citation-function))))
820 (modified (buffer-modified-p)))
821 ;; If the original message is in another window in the same frame,
822 ;; delete that window to save screen space.
823 ;; t means don't alter other frames.
824 (delete-windows-on message-reply-buffer t)
825 (insert-buffer message-reply-buffer)
828 (let ((message-indentation-spaces
829 (if arg (prefix-numeric-value arg)
830 message-indentation-spaces)))
832 (funcall (pop functions)))))
833 (when message-citation-line-function
836 (funcall message-citation-line-function))
837 ;; This is like exchange-point-and-mark, but doesn't activate the mark.
838 ;; It is cleaner to avoid activation, even though the command
839 ;; loop would deactivate the mark because we inserted text.
840 (goto-char (prog1 (mark t)
841 (set-marker (mark-marker) (point) (current-buffer))))
845 (setq message-checksum (message-checksum))))))
847 (defun message-insert-citation-line ()
848 "Function that inserts a simple citation line."
849 (when message-reply-headers
850 (insert (mail-header-from message-reply-headers) " writes:\n\n")))
852 (defun message-position-on-field (header &rest afters)
853 (let ((case-fold-search t))
856 (goto-char (point-min))
859 (concat "^" (regexp-quote message-header-separator) "$"))
860 (match-beginning 0)))
861 (goto-char (point-min))
862 (if (re-search-forward (concat "^" (regexp-quote header) ":") nil t)
864 (re-search-forward "^[^ \t]" nil 'move)
866 (skip-chars-backward "\n")
869 (not (re-search-forward
870 (concat "^" (regexp-quote (car afters)) ":")
874 (re-search-forward "^[^ \t]" nil 'move)
876 (insert header ": \n")
880 (defun message-remove-signature ()
881 "Remove the signature from the text between point and mark.
882 The text will also be indented the normal way.
883 This function can be used in `message-citation-hook', for instance."
885 (let ((start (point))
887 (if (not (re-search-forward message-signature-separator (mark t) t))
888 ;; No signature here, so we just indent the cited text.
889 (message-indent-citation)
890 ;; Find the last non-empty line.
892 (while (looking-at "[ \t]*$")
895 (setq mark (set-marker (make-marker) (point)))
897 (message-indent-citation)
898 ;; Enable undoing the deletion.
900 (delete-region mark (mark t))
901 (set-marker mark nil)))))
909 (defun message-send-and-exit (&optional arg)
910 "Send message like `message-send', then, if no errors, exit from mail buffer.
911 Prefix arg means don't delete this window."
917 (defun message-dont-send (&optional arg)
918 "Don't send the message you have been editing.
919 Prefix arg means don't delete this window."
923 (defun message-bury (arg)
924 "Bury this mail buffer."
925 (let ((newbuf (other-buffer (current-buffer))))
926 (bury-buffer (current-buffer))
927 (if (and (fboundp 'frame-parameters)
928 (cdr (assq 'dedicated (frame-parameters)))
929 (not (null (delq (selected-frame) (visible-frame-list)))))
930 (delete-frame (selected-frame))
931 (switch-to-buffer newbuf))))
933 (defun message-send (&optional arg)
934 "Send the message in the current buffer.
935 If `message-interactive' is non-nil, wait for success indication
936 or error messages, and inform user.
937 Otherwise any failure is reported in a message back to
938 the user from the mailer."
940 (when (if buffer-file-name
941 (y-or-n-p (format "Send buffer contents as %s message? "
943 (if (message-news-p) "main and news" "news")
945 (or (buffer-modified-p)
946 (y-or-n-p "No changes in the buffer; really send? ")))
947 ;; Make it possible to undo the coming changes.
949 (run-hooks 'message-send-hook)
950 (message "Sending...")
951 (when (and (or (not (message-news-p))
952 (and (or (not (memq 'news message-sent-message-via))
954 "Already sent message via news; resend? "))
955 (funcall message-send-news-function arg)))
956 (or (not (message-mail-p))
957 (and (or (not (memq 'mail message-sent-message-via))
959 "Already sent message via mail; resend? "))
960 (funcall message-send-mail-function arg))))
962 (run-hooks 'message-sent-hook)
963 (message "Sending...done")
964 ;; If buffer has no file, mark it as unmodified and delete autosave.
965 (unless buffer-file-name
966 (set-buffer-modified-p nil)
967 (delete-auto-save-file-if-necessary t))
968 ;; Now perform actions on successful sending.
969 (let ((actions message-send-actions))
972 (apply (caar actions) (cdar actions))
976 (defun message-send-mail (&optional arg)
977 (require 'mail-utils)
978 (let ((errbuf (if message-interactive
979 (generate-new-buffer " sendmail errors")
981 (tembuf (generate-new-buffer " message temp"))
982 (case-fold-search nil)
983 (news (message-news-p))
984 (resend-to-addresses (mail-fetch-field "resent-to"))
986 (mailbuf (current-buffer)))
988 (message-narrow-to-headers)
989 ;; Remove some headers.
990 (message-remove-header message-ignored-news-headers t)
991 ;; Insert some headers.
992 (message-generate-headers message-required-mail-headers)
993 ;; Let the user do all of the above.
994 (run-hooks 'message-header-hook))
999 (insert-buffer-substring mailbuf)
1000 (goto-char (point-max))
1001 ;; require one newline at the end.
1002 (or (= (preceding-char) ?\n)
1005 (or (mail-fetch-field "cc")
1006 (mail-fetch-field "to")))
1007 (message-insert-courtesy-copy))
1008 (let ((case-fold-search t))
1009 ;; Change header-delimiter to be what sendmail expects.
1010 (goto-char (point-min))
1012 (concat "^" (regexp-quote message-header-separator) "\n"))
1013 (replace-match "\n")
1015 (setq delimline (point-marker))
1016 (sendmail-synch-aliases)
1017 (when message-aliases
1018 (expand-mail-aliases (point-min) delimline))
1019 ;; Insert an extra newline if we need it to work around
1020 ;; Sun's bug that swallows newlines.
1021 (goto-char (1+ delimline))
1022 (when (eval message-mailer-swallows-blank-line)
1024 (when message-interactive
1028 (let ((default-directory "/"))
1029 (apply 'call-process-region
1030 (append (list (point-min) (point-max)
1031 (if (boundp 'sendmail-program)
1033 "/usr/lib/sendmail")
1034 nil errbuf nil "-oi")
1035 ;; Always specify who from,
1036 ;; since some systems have broken sendmails.
1037 (list "-f" (user-login-name))
1038 (and message-alias-file
1039 (list (concat "-oA" message-alias-file)))
1040 ;; These mean "report errors by mail"
1041 ;; and "deliver in background".
1042 (if (null message-interactive) '("-oem" "-odb"))
1043 ;; Get the addresses from the message
1044 ;; unless this is a resend.
1045 ;; We must not do that for a resend
1046 ;; because we would find the original addresses.
1047 ;; For a resend, include the specific addresses.
1048 (or resend-to-addresses
1050 (when message-interactive
1053 (goto-char (point-min))
1054 (while (re-search-forward "\n\n* *" nil t)
1055 (replace-match "; "))
1056 (if (not (zerop (buffer-size)))
1057 (error "Sending...failed to %s"
1058 (buffer-substring (point-min) (point-max)))))))
1059 (kill-buffer tembuf)
1060 (when (bufferp errbuf)
1061 (kill-buffer errbuf)))
1062 (push 'mail message-sent-message-via)))
1064 (defun message-send-news (&optional arg)
1065 (let ((tembuf (generate-new-buffer " *message temp*"))
1066 (case-fold-search nil)
1067 (method (if (message-functionp message-post-method)
1068 (funcall message-post-method arg)
1069 message-post-method))
1070 (messbuf (current-buffer)))
1072 (message-narrow-to-headers)
1073 ;; Remove some headers.
1074 (message-remove-header message-ignored-news-headers t)
1075 ;; Insert some headers.
1076 (message-generate-headers message-required-news-headers)
1077 ;; Let the user do all of the above.
1078 (run-hooks 'message-header-hook))
1079 (when (message-check-news-syntax)
1083 (buffer-disable-undo (current-buffer))
1085 (insert-buffer-substring messbuf)
1086 (goto-char (point-max))
1087 ;; require one newline at the end.
1088 (or (= (preceding-char) ?\n)
1090 (let ((case-fold-search t))
1091 ;; Remove the delimeter.
1092 (goto-char (point-min))
1094 (concat "^" (regexp-quote message-header-separator) "\n"))
1095 (replace-match "\n")
1097 (require (car method))
1098 (funcall (intern (format "%s-open-server" (car method)))
1099 (cadr method) (cddr method))
1100 (funcall (intern (format "%s-request-post"
1102 (kill-buffer tembuf))
1103 (push 'news message-sent-message-via))))
1106 ;;; Header generation & syntax checking.
1109 (defun message-check-news-syntax ()
1110 "Check the syntax of the message."
1112 (not message-syntax-checks)
1114 ;; We narrow to the headers and check them first.
1117 (message-narrow-to-headers)
1119 ;; Check for commands in Subject.
1121 (message-check-element 'subject-cmsg)
1123 (if (string-match "^cmsg " (mail-fetch-field "subject"))
1125 "The control code \"cmsg \" is in the subject. Really post? ")
1127 ;; Check for multiple identical headers.
1128 (or (message-check-element 'multiple-headers)
1131 (while (and (not found)
1132 (re-search-forward "^[^ \t:]+: " nil t))
1134 (or (re-search-forward
1135 (concat "^" (setq found
1138 (- (match-end 0) 2))))
1143 (format "Multiple %s headers. Really post? " found))
1145 ;; Check for Version and Sendsys.
1146 (or (message-check-element 'sendsys)
1148 (if (re-search-forward "^Sendsys:\\|^Version:" nil t)
1150 (format "The article contains a %s command. Really post? "
1151 (buffer-substring (match-beginning 0)
1152 (1- (match-end 0)))))
1154 ;; See whether we can shorten Followup-To.
1155 (or (message-check-element 'shorten-followup-to)
1156 (let ((newsgroups (mail-fetch-field "newsgroups"))
1157 (followup-to (mail-fetch-field "followup-to"))
1159 (when (and newsgroups (string-match "," newsgroups)
1164 (setq to (completing-read
1165 "Followups to: (default all groups) "
1166 (mapcar (lambda (g) (list g))
1168 (message-tokenize-header
1170 (goto-char (point-min))
1171 (insert "Followup-To: " to "\n"))))
1173 ;; Check for Approved.
1174 (or (message-check-element 'approved)
1176 (if (re-search-forward "^Approved:" nil t)
1178 "The article contains an Approved header. Really post? ")
1180 ;; Check the Message-Id header.
1181 (or (message-check-element 'message-id)
1183 (let* ((case-fold-search t)
1184 (message-id (mail-fetch-field "message-id")))
1185 (or (not message-id)
1186 (and (string-match "@" message-id)
1187 (string-match "@[^\\.]*\\." message-id))
1190 "The Message-ID looks strange: \"%s\". Really post? "
1192 ;; Check the Subject header.
1194 (message-check-element 'subject)
1196 (let* ((case-fold-search t)
1197 (subject (mail-fetch-field "subject")))
1200 (not (string-match "\\`[ \t]*\\'" subject)))
1203 "The subject field is empty or missing. Posting is denied.")
1205 ;; Check the From header.
1206 (or (message-check-element 'from)
1208 (let* ((case-fold-search t)
1209 (from (mail-fetch-field "from")))
1212 (message "There is no From line. Posting is denied.")
1214 ((not (string-match "@[^\\.]*\\." from))
1216 "Denied posting -- the From looks strange: \"%s\"." from)
1218 ((string-match "(.*).*(.*)" from)
1220 "Denied posting -- the From header looks strange: \"%s\"."
1224 ;; Check for long lines.
1225 (or (message-check-element 'long-lines)
1227 (goto-char (point-min))
1229 (concat "^" (regexp-quote mail-header-separator) "$"))
1233 (< (current-column) 80))
1234 (zerop (forward-line 1))))
1238 "You have lines longer than 79 characters. Really post? "))))
1239 ;; Check whether the article is empty.
1240 (or (message-check-element 'empty)
1242 (goto-char (point-min))
1244 (concat "^" (regexp-quote mail-header-separator) "$"))
1246 (or (re-search-forward "[^ \n\t]" nil t)
1247 (y-or-n-p "Empty article. Really post?"))))
1248 ;; Check for control characters.
1249 (or (message-check-element 'control-chars)
1251 (if (re-search-forward "[\000-\007\013\015-\037\200-\237]" nil t)
1253 "The article contains control characters. Really post? ")
1255 ;; Check excessive size.
1256 (or (message-check-element 'size)
1257 (if (> (buffer-size) 60000)
1259 (format "The article is %d octets long. Really post? "
1262 ;; Check whether any new text has been added.
1263 (or (message-check-element 'new-text)
1264 (not message-checksum)
1265 (not (eq (message-checksum) message-checksum))
1267 "It looks like no new text has been added. Really post? "))
1268 ;; Check the length of the signature.
1269 (or (message-check-element 'signature)
1271 (goto-char (point-max))
1272 (if (not (re-search-backward "^-- $" nil t))
1274 (if (> (count-lines (point) (point-max)) 5)
1277 "Your .sig is %d lines; it should be max 4. Really post? "
1278 (count-lines (point) (point-max))))
1281 ;; Returns non-nil if this type is not to be checked.
1282 (defun message-check-element (type)
1284 (or (not message-syntax-checks)
1285 (if (listp message-syntax-checks)
1286 (memq type message-syntax-checks)
1289 (defun message-checksum ()
1290 "Return a \"checksum\" for the current buffer."
1294 (setq sum (logxor sum (following-char)))
1298 (defun message-do-fcc ()
1299 "Process Fcc headers in the current buffer."
1300 (let ((case-fold-search t)
1304 (nnheader-narrow-to-headers)
1305 (while (setq file (mail-fetch-field "fcc"))
1307 (message-remove-header "fcc" nil t))
1308 ;; Process FCC operations.
1311 (setq file (pop list))
1312 (if (string-match "^[ \t]*|[ \t]*\\(.*\\)[ \t]*$" file)
1313 ;; Pipe the article to the program in question.
1314 (call-process-region (point-min) (point-max) shell-file-name
1315 nil nil nil "-c" (match-string 1 file))
1316 ;; Save the article.
1317 (setq file (expand-file-name file))
1318 (unless (file-exists-p (file-name-directory file))
1319 (make-directory (file-name-directory file) t))
1320 (if (and message-fcc-handler-function
1321 (not (eq message-fcc-handler-function 'rmail-output)))
1322 (funcall message-fcc-handler-function file)
1323 (if (and (file-readable-p file) (mail-file-babyl-p file))
1324 (rmail-output file 1)
1325 (let ((mail-use-rfc822 t))
1326 (rmail-output file 1 t t))))))))))
1328 (defun message-cleanup-headers ()
1329 "Do various automatic cleanups of the headers."
1330 ;; Remove empty lines in the header.
1332 (message-narrow-to-headers)
1333 (while (re-search-forward "^[ \t]*\n" nil t)
1334 (replace-match "" t t)))
1336 ;; Correct Newsgroups and Followup-To headers: change sequence of
1337 ;; spaces to comma and eliminate spaces around commas. Eliminate
1338 ;; imbedded line breaks.
1339 (goto-char (point-min))
1340 (while (re-search-forward "^\\(Newsgroups\\|Followup-To\\): +" nil t)
1344 (if (re-search-forward "^[^ \t]" nil t)
1348 (goto-char (point-min))
1349 (while (re-search-forward "\n[ \t]+" nil t)
1350 (replace-match " " t t)) ;No line breaks (too confusing)
1351 (goto-char (point-min))
1352 (while (re-search-forward "[ \t\n]*,[ \t\n]*\\|[ \t]+" nil t)
1353 (replace-match "," t t))
1354 (goto-char (point-min))
1355 ;; Remove trailing commas.
1356 (when (re-search-forward ",+$" nil t)
1357 (replace-match "" t t)))))
1359 (defun message-make-date ()
1360 "Make a valid data header."
1361 (let ((now (current-time)))
1362 (timezone-make-date-arpa-standard
1363 (current-time-string now) (current-time-zone now))))
1365 (defun message-make-message-id ()
1366 "Make a unique Message-ID."
1367 (concat "<" (message-unique-id) "@" (message-make-fqdm) ">"))
1369 (defvar message-unique-id-char nil)
1371 ;; If you ever change this function, make sure the new version
1372 ;; cannot generate IDs that the old version could.
1373 ;; You might for example insert a "." somewhere (not next to another dot
1374 ;; or string boundary), or modify the "fsf" string.
1375 (defun message-unique-id ()
1376 ;; Don't use microseconds from (current-time), they may be unsupported.
1377 ;; Instead we use this randomly inited counter.
1378 (setq message-unique-id-char
1379 (% (1+ (or message-unique-id-char (logand (random t) (1- (lsh 1 20)))))
1380 ;; (current-time) returns 16-bit ints,
1381 ;; and 2^16*25 just fits into 4 digits i base 36.
1383 (let ((tm (current-time)))
1385 (if (memq system-type '(ms-dos emx vax-vms))
1386 (let ((user (downcase (user-login-name))))
1387 (while (string-match "[^a-z0-9_]" user)
1388 (aset user (match-beginning 0) ?_))
1390 (message-number-base36 (user-uid) -1))
1391 (message-number-base36 (+ (car tm)
1392 (lsh (% message-unique-id-char 25) 16)) 4)
1393 (message-number-base36 (+ (nth 1 tm)
1394 (lsh (/ message-unique-id-char 25) 16)) 4)
1395 ;; Append the newsreader name, because while the generated
1396 ;; ID is unique to this newsreader, other newsreaders might
1397 ;; otherwise generate the same ID via another algorithm.
1400 (defun message-number-base36 (num len)
1401 (if (if (< len 0) (<= num 0) (= len 0))
1403 (concat (message-number-base36 (/ num 36) (1- len))
1404 (char-to-string (aref "zyxwvutsrqponmlkjihgfedcba9876543210"
1407 (defun message-make-organization ()
1408 "Make an Organization header."
1409 (let* ((organization
1410 (or (getenv "ORGANIZATION")
1411 (when message-user-organization
1412 (if (message-functionp message-user-organization)
1413 (funcall message-user-organization)
1414 message-user-organization)))))
1416 (message-set-work-buffer)
1417 (cond ((stringp message-user-organization)
1418 (insert message-user-organization))
1419 ((and (eq t message-user-organization)
1420 message-user-organization-file
1421 (file-exists-p message-user-organization-file))
1422 (insert-file-contents message-user-organization-file)))
1423 (goto-char (point-min))
1424 (when (re-search-forward "[ \t\n]*" nil t)
1425 (replace-match "" t t))
1426 (unless (zerop (buffer-size))
1429 (defun message-make-lines ()
1430 "Count the number of lines and return numeric string."
1434 (goto-char (point-min))
1436 (concat "^" (regexp-quote message-header-separator) "$"))
1438 (int-to-string (count-lines (point) (point-max))))))
1440 (defun message-make-in-reply-to ()
1441 "Return the In-Reply-To header for this message."
1442 (when message-reply-headers
1443 (let ((from (mail-header-from message-reply-headers))
1444 (date (mail-header-date message-reply-headers)))
1447 (string-match " *at \\| *@ \\| *(\\| *<" from)))
1448 (concat (if stop-pos (substring from 0 stop-pos) from)
1450 (if (or (not date) (string= date ""))
1451 "(unknown date)" date)))))))
1453 (defun message-make-distribution ()
1454 "Make a Distribution header."
1455 (let ((orig-distribution (message-fetch-reply-field "distribution")))
1456 (cond ((message-functionp message-distribution-function)
1457 (funcall message-distribution-function))
1458 (t orig-distribution))))
1460 (defun message-make-expires ()
1461 "Return an Expires header based on `message-expires'."
1462 (let ((current (current-time))
1463 (future (* 1.0 message-expires 60 60 24)))
1464 ;; Add the future to current.
1465 (setcar current (+ (car current) (round (/ future (expt 2 16)))))
1466 (setcar (cdr current) (+ (nth 1 current) (% (round future) (expt 2 16))))
1467 ;; Return the date in the future in UT.
1468 (timezone-make-date-arpa-standard
1469 (current-time-string current) (current-time-zone current) '(0 "UT"))))
1471 (defun message-make-path ()
1473 (let ((login-name (user-login-name)))
1474 (cond ((null message-user-path)
1475 (concat (system-name) "!" login-name))
1476 ((stringp message-user-path)
1477 ;; Support GENERICPATH. Suggested by vixie@decwrl.dec.com.
1478 (concat message-user-path "!" login-name))
1481 (defun message-make-from ()
1482 "Make a From header."
1483 (let* ((login (message-make-address))
1484 (fullname (user-full-name)))
1485 (when (string= fullname "&")
1486 (setq fullname (user-login-name)))
1488 (message-set-work-buffer)
1490 ((eq message-from-style 'angles)
1492 (goto-char (point-min))
1493 ;; Look for a character that cannot appear unquoted
1494 ;; according to RFC 822.
1495 (when (re-search-forward "[^- !#-'*+/-9=?A-Z^-~]" nil 1)
1496 ;; Quote fullname, escaping specials.
1497 (goto-char (point-min))
1499 (while (re-search-forward "[\"\\]" nil 1)
1500 (replace-match "\\\\\\&" t))
1502 (insert " <" login ">"))
1503 ((eq message-from-style 'parens)
1505 (let ((fullname-start (point)))
1507 (goto-char fullname-start)
1508 ;; RFC 822 says \ and nonmatching parentheses
1509 ;; must be escaped in comments.
1510 ;; Escape every instance of ()\ ...
1511 (while (re-search-forward "[()\\]" nil 1)
1512 (replace-match "\\\\\\&" t))
1513 ;; ... then undo escaping of matching parentheses,
1514 ;; including matching nested parentheses.
1515 (goto-char fullname-start)
1516 (while (re-search-forward
1517 "\\(\\=\\|[^\\]\\(\\\\\\\\\\)*\\)\\\\(\\(\\([^\\]\\|\\\\\\\\\\)*\\)\\\\)"
1519 (replace-match "\\1(\\3)" t)
1520 (goto-char fullname-start)))
1522 ((null message-from-style)
1523 (insert login "\n")))
1526 (defun message-make-sender ()
1527 "Return the \"real\" user address.
1528 This function tries to ignore all user modifications, and
1529 give as trustworthy answer as possible."
1530 (concat (user-login-name) "@" (system-name)))
1532 (defun message-make-address ()
1533 "Make the address of the user."
1534 (concat (user-login-name) "@" (message-make-domain)))
1536 (defun message-make-fqdm ()
1537 "Return user's fully qualified domain name."
1538 (let ((system-name (system-name)))
1539 (if (string-match "[^.]\\.[^.]" system-name)
1540 ;; `system-name' returned the right result.
1542 ;; We try `user-mail-address' as a backup.
1543 (if (string-match "@\\([^ ]+\\)\\($\\| \\)" user-mail-address)
1544 (match-string 1 user-mail-address)
1545 (concat system-name ".i-have-a-misconfigured-system-so-shoot-me")))))
1547 (defun message-make-host-name ()
1548 "Return the name of the host."
1549 (let ((fqdm (message-make-fqdm)))
1550 (string-match "^[^.]+\\." fqdm)
1551 (substring fqdm 0 (1- (match-end 0)))))
1553 (defun message-make-domain ()
1554 "Return the domain name."
1555 (let ((fqdm (message-make-fqdm)))
1556 (if message-generic-domain
1558 (string-match "^[^.]+\\." fqdm)
1559 (substring fqdm (match-end 0)))
1562 (defun message-generate-headers (headers)
1563 "Prepare article HEADERS.
1564 Headers already prepared in the buffer are not modified."
1566 (message-narrow-to-headers)
1567 (let* ((Date (message-make-date))
1568 (Message-ID (message-make-message-id))
1569 (Organization (message-make-organization))
1570 (From (message-make-from))
1571 (Path (message-make-path))
1574 (In-Reply-To (message-make-in-reply-to))
1576 (Distribution (message-make-distribution))
1577 (Lines (message-make-lines))
1578 (X-Newsreader message-newsreader)
1579 (X-Mailer message-mailer)
1580 (Expires (message-make-expires))
1581 (case-fold-search t)
1583 ;; First we remove any old generated headers.
1584 (let ((headers message-deletable-headers))
1586 (goto-char (point-min))
1587 (and (re-search-forward
1588 (concat "^" (symbol-name (car headers)) ": *") nil t)
1589 (get-text-property (1+ (match-beginning 0)) 'message-deletable)
1590 (message-delete-line))
1592 ;; If there are References, and the subject has changed, then
1593 ;; we have to change the Message-ID. See Son-of-1036.
1594 (when (and message-reply-headers
1595 (mail-fetch-field "references"))
1596 (let ((psubject (mail-fetch-field "subject")))
1597 (and psubject (mail-header-subject message-reply-headers)
1598 (string= (message-strip-subject-re
1599 (mail-header-subject message-reply-headers))
1600 (message-strip-subject-re
1603 (string-match "@" Message-ID)
1605 (concat (substring Message-ID 0 (match-beginning 0))
1607 (substring Message-ID (match-beginning 0))))))))
1608 ;; Go through all the required headers and see if they are in the
1609 ;; articles already. If they are not, or are empty, they are
1610 ;; inserted automatically - except for Subject, Newsgroups and
1613 (goto-char (point-min))
1614 (setq elem (pop headers))
1616 (if (eq (car elem) 'optional)
1617 (setq header (cdr elem))
1618 (setq header (car elem)))
1620 (when (or (not (re-search-forward
1621 (concat "^" (downcase (symbol-name header)) ":")
1624 ;; The header was found. We insert a space after the
1625 ;; colon, if there is none.
1626 (if (/= (following-char) ? ) (insert " ") (forward-char 1))
1627 ;; Find out whether the header is empty...
1628 (looking-at "[ \t]*$")))
1629 ;; So we find out what value we should insert.
1632 ((and (consp elem) (eq (car elem) 'optional))
1633 ;; This is an optional header. If the cdr of this
1634 ;; is something that is nil, then we do not insert
1636 (setq header (cdr elem))
1637 (or (and (fboundp (cdr elem)) (funcall (cdr elem)))
1638 (and (boundp (cdr elem)) (symbol-value (cdr elem)))))
1640 ;; The element is a cons. Either the cdr is a
1641 ;; string to be inserted verbatim, or it is a
1642 ;; function, and we insert the value returned from
1644 (or (and (stringp (cdr elem)) (cdr elem))
1645 (and (fboundp (cdr elem)) (funcall (cdr elem)))))
1646 ((and (boundp header) (symbol-value header))
1647 ;; The element is a symbol. We insert the value
1648 ;; of this symbol, if any.
1649 (symbol-value header))
1651 ;; We couldn't generate a value for this header,
1652 ;; so we just ask the user.
1653 (read-from-minibuffer
1654 (format "Empty header for %s; enter value: " header)))))
1655 ;; Finally insert the header.
1657 (not (equal value "")))
1661 ;; This header didn't exist, so we insert it.
1662 (goto-char (point-max))
1663 (insert (symbol-name header) ": " value "\n")
1665 ;; The value of this header was empty, so we clear
1666 ;; totally and insert the new value.
1667 (delete-region (point) (message-point-at-eol))
1669 ;; Add the deletable property to the headers that require it.
1670 (and (memq header message-deletable-headers)
1671 (progn (beginning-of-line) (looking-at "[^:]+: "))
1672 (add-text-properties
1673 (point) (match-end 0)
1674 '(message-deletable t face italic) (current-buffer)))))))
1675 ;; Insert new Sender if the From is strange.
1676 (let ((from (mail-fetch-field "from"))
1677 (sender (mail-fetch-field "sender"))
1678 (secure-sender (message-make-sender)))
1680 (not (message-check-element 'sender))
1683 (cadr (mail-extract-address-components from)))
1684 (downcase secure-sender)))
1689 (cadr (mail-extract-address-components sender)))
1690 (downcase secure-sender)))))
1691 (goto-char (point-min))
1692 ;; Rename any old Sender headers to Original-Sender.
1693 (when (re-search-forward "^Sender:" nil t)
1695 (insert "Original-")
1696 (beginning-of-line))
1697 (insert "Sender: " secure-sender "\n"))))))
1699 (defun message-insert-courtesy-copy ()
1700 "Insert a courtesy message in mail copies of combined messages."
1703 (message-narrow-to-headers)
1704 (let ((newsgroups (mail-fetch-field "newsgroups")))
1705 (goto-char (point-max))
1706 (insert "Posted-To: " newsgroups "\n")))
1708 (insert message-courtesy-message)))
1711 ;;; Setting up a message buffer
1714 (defun message-fill-header (header value)
1715 (let ((begin (point))
1718 (insert (capitalize (symbol-name header))
1720 (if (consp value) (car value) value)
1722 (fill-region-as-paragraph begin (point))))
1724 (defun sendmail-synch-aliases ()
1725 (let ((modtime (nth 5 (file-attributes message-personal-alias-file))))
1726 (or (equal message-alias-modtime modtime)
1727 (setq message-alias-modtime modtime
1728 message-aliases t))))
1730 (defun message-position-point ()
1731 "Move point to where the user probably wants to find it."
1732 (message-narrow-to-headers)
1734 ((re-search-forward "^[^:]+:[ \t]*$" nil t)
1735 (search-backward ":" )
1738 (if (= (following-char) ? )
1742 (goto-char (point-max))
1745 (unless (looking-at "$")
1749 (defun message-pop-to-buffer (name)
1750 "Pop to buffer NAME, and warn if it already exists and is modified."
1751 (let ((buffer (get-buffer name)))
1753 (buffer-name buffer))
1755 (set-buffer (pop-to-buffer buffer))
1756 (when (and (buffer-modified-p)
1758 "Message already being composed; erase? ")))
1759 (error "Message being composed")))
1760 (set-buffer (pop-to-buffer name)))
1764 (defun message-setup (headers &optional replybuffer actions)
1765 (sendmail-synch-aliases)
1766 (when (eq message-aliases t)
1767 (setq message-aliases nil)
1768 (when (file-exists-p message-personal-alias-file)
1769 (build-mail-aliases)))
1770 (setq message-send-actions actions)
1771 (setq message-reply-buffer replybuffer)
1772 (goto-char (point-min))
1773 ;; Insert all the headers.
1776 (alist message-header-format-alist))
1778 (unless (assq (caar h) message-header-format-alist)
1779 (push (list (caar h)) alist))
1783 (when message-default-headers
1784 (insert message-default-headers))
1785 (when (and (message-news-p)
1786 message-default-news-headers)
1787 (when message-generate-headers-first
1788 (message-generate-headers message-required-news-headers))
1789 (insert message-default-news-headers))
1790 (when (and (message-mail-p)
1791 message-default-mail-headers)
1792 (when message-generate-headers-first
1793 (message-generate-headers message-required-mail-headers))
1794 (insert message-default-mail-headers))
1796 (insert message-header-separator "\n")
1797 (message-insert-signature)
1798 (message-set-auto-save-file-name)
1800 (message-narrow-to-headers)
1801 (run-hooks 'message-header-setup-hook))
1802 (set-buffer-modified-p nil)
1803 (run-hooks 'message-setup-hook)
1804 (message-position-point)
1807 (defun message-set-auto-save-file-name ()
1808 "Associate the message buffer with a file in the drafts directory."
1809 (when message-autosave-directory
1810 (unless (file-exists-p message-autosave-directory)
1811 (make-directory message-autosave-directory t))
1812 (let ((name (make-temp-name
1813 (concat (file-name-as-directory message-autosave-directory)
1815 (setq buffer-auto-save-file-name
1819 (set-buffer (get-buffer-create " *draft tmp*"))
1820 (setq buffer-file-name name)
1821 (make-auto-save-file-name))
1822 (kill-buffer (current-buffer)))))
1823 (clear-visited-file-modtime))))
1828 ;;; Commands for interfacing with message
1832 (defun message-mail (&optional to subject)
1833 "Start editing a mail message to be sent."
1835 (message-pop-to-buffer "*mail message*")
1836 (message-setup `((To . ,(or to "")) (Subject . ,(or subject "")))))
1839 (defun message-news (&optional newsgroups subject)
1840 "Start editing a news article to be sent."
1842 (message-pop-to-buffer "*news message*")
1843 (message-setup `((Newsgroups . ,(or newsgroups ""))
1844 (Subject . ,(or subject "")))))
1847 (defun message-reply (&optional to-address wide)
1848 "Start editing a reply to the article in the current buffer."
1850 (let ((cur (current-buffer))
1851 from subject date reply-to message-of to cc
1852 references message-id sender follow-to sendto elt new-cc new-to
1853 mct never-mct gnus-warning)
1856 (goto-char (point-min))
1857 (if (search-forward "\n\n" nil t)
1860 ;; Allow customizations to have their say.
1862 ;; This is a regular reply.
1863 (if (message-functionp message-reply-to-function)
1864 (setq follow-to (funcall message-reply-to-function)))
1865 ;; This is a followup.
1866 (if (gnus-functionp message-wide-reply-to-function)
1869 (funcall message-wide-reply-to-function)))))
1870 ;; Find all relevant headers we need.
1871 (setq from (mail-fetch-field "from")
1872 date (mail-fetch-field "date")
1873 sender (mail-fetch-field "sender")
1874 subject (or (mail-fetch-field "subject") "none")
1875 to (mail-fetch-field "to")
1876 cc (mail-fetch-field "cc")
1877 mct (mail-fetch-field "mail-copies-to")
1878 reply-to (mail-fetch-field "reply-to")
1879 references (mail-fetch-field "references")
1880 message-id (mail-fetch-field "message-id"))
1881 ;; Remove any (buggy) Re:'s that are present and make a
1883 (when (string-match "^[ \t]*[Re][Ee]:[ \t]*" subject)
1884 (setq subject (substring subject (match-end 0))))
1885 (setq subject (concat "Re: " subject))
1887 (when (and (setq gnus-warning (mail-fetch-field "gnus-warning"))
1888 (string-match "<[^>]+>" gnus-warning))
1889 (setq message-id (match-string 0 gnus-warning)))
1891 ;; Handle special values of Mail-Copies-To.
1893 (cond ((equal (downcase mct) "never")
1896 ((equal (downcase mct) "always")
1897 (setq mct (or reply-to from)))))
1902 (setq follow-to (list (cons 'To (or to-address reply-to from))))
1905 (message-set-work-buffer)
1907 (insert (or reply-to from "")))
1909 (if (bolp) "" ", ") (or to "")
1910 (if mct (concat (if (bolp) "" ", ") mct) "")
1911 (if cc (concat (if (bolp) "" ", ") cc) ""))
1912 ;; Remove addresses that match `rmail-dont-reply-to-names'.
1913 (insert (prog1 (rmail-dont-reply-to (buffer-string))
1915 (goto-char (point-min))
1919 (cons (mail-strip-quoted-names addr) addr))
1920 (nreverse (mail-parse-comma-list))))
1923 (setq ccalist (delq (assoc (car (pop s)) s) ccalist)))))
1924 (setq follow-to (list (cons 'To (cdr (pop ccalist)))))
1927 (mapconcat (lambda (addr) (cdr addr)) ccalist ", "))
1931 (message-pop-to-buffer "*mail message*")
1933 (setq message-reply-headers
1934 (vector 0 subject from date message-id references 0 0 ""))
1937 `((Subject . ,subject)
1939 (References . ,(concat (or references "") (and references " ")
1940 (or message-id ""))))
1944 (defun message-wide-reply (&optional to-address)
1946 (message-reply to-address t))
1949 (defun message-followup ()
1951 (let ((cur (current-buffer))
1952 from subject date message-of reply-to mct
1953 references message-id follow-to sendto elt
1954 followup-to distribution newsgroups gnus-warning)
1957 (goto-char (point-min))
1958 (if (search-forward "\n\n" nil t)
1961 (when (message-functionp message-followup-to-function)
1963 (funcall message-followup-to-function)))
1964 (setq from (mail-fetch-field "from")
1965 date (mail-fetch-field "date")
1966 subject (or (mail-fetch-field "subject") "none")
1967 references (mail-fetch-field "references")
1968 message-id (mail-fetch-field "message-id")
1969 followup-to (mail-fetch-field "followup-to")
1970 newsgroups (mail-fetch-field "newsgroups")
1971 reply-to (mail-fetch-field "reply-to")
1972 distribution (mail-fetch-field "distribution")
1973 mct (mail-fetch-field "mail-copies-to"))
1974 (when (and (setq gnus-warning (mail-fetch-field "gnus-warning"))
1975 (string-match "<[^>]+>" gnus-warning))
1976 (setq message-id (match-string 0 gnus-warning)))
1977 ;; Remove bogus distribution.
1978 (and (stringp distribution)
1979 (string-match "world" distribution)
1980 (setq distribution nil))
1981 ;; Remove any (buggy) Re:'s that are present and make a
1983 (when (string-match "^[ \t]*[Re][Ee]:[ \t]*" subject)
1984 (setq subject (substring subject (match-end 0))))
1985 (setq subject (concat "Re: " subject))
1988 (message-pop-to-buffer "*news message*")
1991 `((Subject . ,subject)
1993 (follow-to follow-to)
1994 ((and followup-to message-use-followup-to)
1997 ((equal (downcase followup-to) "poster")
1998 (if (or (eq message-use-followup-to 'use)
1999 (y-or-n-p "Use Followup-To \"poster\"? "))
2000 (cons 'To (or reply-to from ""))
2001 (cons 'Newsgroups newsgroups)))
2003 (if (or (equal followup-to newsgroups)
2004 (not (eq message-use-followup-to 'ask))
2005 (y-or-n-p (format "Use Followup-To %s? " followup-to)))
2006 (cons 'Newsgroups followup-to)
2007 (cons 'Newsgroups newsgroups))))))
2009 `((Newsgroups . ,newsgroups))))
2010 ,@(and distribution (list (cons 'Distribution distribution)))
2011 (References . ,(concat (or references "") (and references " ")
2012 (or message-id "")))
2014 (not (equal (downcase mct) "never")))
2015 (list (cons 'Cc (if (equal (downcase mct) "always")
2016 (or reply-to from "")
2021 (defun message-cancel-news ()
2022 "Cancel an article you posted."
2024 (unless (message-news-p)
2025 (error "This is not a news article; canceling is impossible"))
2026 (when (yes-or-no-p "Do you really want to cancel this article? "))
2027 (let (from newsgroups message-id distribution buf)
2029 ;; Get header info. from original article.
2031 (message-narrow-to-head)
2032 (setq from (mail-fetch-field "from")
2033 newsgroups (mail-fetch-field "newsgroups")
2034 message-id (mail-fetch-field "message-id")
2035 distribution (mail-fetch-field "distribution")))
2036 ;; Make sure that this article was written by the user.
2037 (unless (string-equal
2038 (downcase (mail-strip-quoted-names from))
2039 (downcase (message-make-address)))
2040 (error "This article is not yours"))
2041 ;; Make control message.
2042 (setq buf (set-buffer (get-buffer-create " *message cancel*")))
2043 (buffer-disable-undo (current-buffer))
2045 (insert "Newsgroups: " newsgroups "\n"
2046 "From: " (message-make-from) "\n"
2047 "Subject: cmsg cancel " message-id "\n"
2048 "Control: cancel " message-id "\n"
2050 (concat "Distribution: " distribution "\n")
2052 message-header-separator "\n"
2053 "This is a cancel message from " from ".\n")
2054 (message "Canceling your article...")
2055 (funcall message-send-news-function)
2056 (message "Canceling your article...done")
2057 (kill-buffer buf))))
2060 (defun message-supersede ()
2061 "Start composing a message to supersede the current message.
2062 This is done simply by taking the old article and adding a Supersedes
2063 header line with the old Message-ID."
2065 (let ((cur (current-buffer)))
2066 ;; Check whether the user owns the article that is to be superseded.
2067 (unless (string-equal
2068 (downcase (mail-strip-quoted-names (mail-fetch-field "from")))
2069 (downcase (mail-strip-quoted-names (message-make-address))))
2070 (error "This article is not yours"))
2071 ;; Get a normal message buffer.
2072 (message-pop-to-buffer "*supersede message*")
2073 (insert-buffer-substring cur)
2074 (message-narrow-to-head)
2075 ;; Remove unwanted headers.
2076 (when message-ignored-supersedes-headers
2077 (message-remove-header message-ignored-supersedes-headers t))
2078 (goto-char (point-min))
2079 (if (not (re-search-forward "^Message-ID: " nil t))
2080 (error "No Message-ID in this article")
2081 (replace-match "Supersedes: " t t))
2082 (goto-char (point-max))
2083 (insert message-header-separator)
2088 (defun message-recover ()
2089 "Reread contents of current buffer from its last auto-save file."
2091 (let ((file-name (make-auto-save-file-name)))
2092 (cond ((save-window-excursion
2093 (if (not (eq system-type 'vax-vms))
2094 (with-output-to-temp-buffer "*Directory*"
2095 (buffer-disable-undo standard-output)
2096 (let ((default-directory "/"))
2098 "ls" nil standard-output nil "-l" file-name))))
2099 (yes-or-no-p (format "Recover auto save file %s? " file-name)))
2100 (let ((buffer-read-only nil))
2102 (insert-file-contents file-name nil)))
2103 (t (error "message-recover cancelled")))))
2105 ;;; Forwarding messages.
2107 (defun message-make-forward-subject ()
2108 "Return a Subject header suitable for the message in the current buffer."
2109 (concat "[" (mail-fetch-field (if (message-news-p) "newsgroups" "from"))
2110 "] " (or (mail-fetch-field "Subject") "")))
2113 (defun message-forward (&optional news)
2115 (let ((cur (current-buffer))
2116 (subject (message-make-forward-subject)))
2117 (if news (message-news nil subject) (message-mail nil subject))
2118 ;; Put point where we want it before inserting the forwarded
2120 (if message-signature-before-forwarded-message
2121 (goto-char (point-max))
2122 (message-goto-body))
2123 ;; Narrow to the area we are to insert.
2124 (narrow-to-region (point) (point))
2125 ;; Insert the separators and the forwarded buffer.
2126 (insert message-forward-start-separator)
2127 (insert-buffer-substring cur)
2128 (goto-char (point-max))
2129 (insert message-forward-end-separator)
2130 (set-text-properties (point-min) (point-max) nil)
2131 ;; Remove all unwanted headers.
2132 (goto-char (point-min))
2134 (narrow-to-region (point) (if (search-forward "\n\n" nil t)
2137 (goto-char (point-min))
2138 (message-remove-header message-included-forward-headers t nil t)
2140 (message-position-point)))
2143 (defun message-resend (address)
2144 "Resend the current article to ADDRESS."
2145 (interactive "sResend message to: ")
2147 (let ((cur (current-buffer))
2149 ;; We first set up a normal mail buffer.
2150 (message-set-work-buffer)
2151 (message-setup `((To . ,address)))
2152 ;; Insert our usual headers.
2153 (message-narrow-to-headers)
2154 (message-generate-headers '(From Date To))
2155 (goto-char (point-min))
2156 ;; Rename them all to "Resent-*".
2157 (while (re-search-forward "^[A-Za-z]" nil t)
2162 (delete-region (point) (point-max))
2164 ;; Insert the message to be resent.
2165 (insert-buffer-substring cur)
2166 (goto-char (point-min))
2167 (search-forward "\n\n")
2170 (narrow-to-region beg (point))
2171 (message-remove-header message-ignored-resent-headers t)
2172 (goto-char (point-max)))
2173 (insert mail-header-separator)
2174 ;; Rename all old ("Also-")Resent headers.
2175 (while (re-search-backward "^\\(Also-\\)?Resent-" beg t)
2179 (funcall message-send-mail-function))))
2182 (defun message-bounce ()
2183 "Re-mail the current message.
2184 This only makes sense if the current message is a bounce message than
2185 contains some mail you have written which has been bounced back to
2188 (let ((cur (current-buffer)))
2189 (message-pop-to-buffer "*mail message*")
2190 (insert-buffer-substring cur)
2191 (goto-char (point-min))
2192 (or (and (re-search-forward mail-unsent-separator nil t)
2194 (and (search-forward "\n\n" nil t)
2195 (re-search-forward "^Return-Path:.*\n" nil t)))
2196 ;; We remove everything before the bounced mail.
2199 (if (re-search-forward "[^ \t]*:" nil t)
2203 (message-narrow-to-head)
2204 (message-remove-header message-ignored-bounced-headers t)
2205 (goto-char (point-max))
2206 (insert mail-header-separator))
2207 (message-position-point)))
2211 ;;; message.el ends here