lisp/gnus-msg.el

   1 ;;; gnus-msg.el --- mail and post interface for Gnus
   2 ;; Copyright (C) 1995,96 Free Software Foundation, Inc.
   3
   4 ;; Author: Masanobu UMEDA <umerin@flab.flab.fujitsu.junet>
   5 ;;      Lars Magne Ingebrigtsen <larsi@ifi.uio.no>
   6 ;; Keywords: news
   7
   8 ;; This file is part of GNU Emacs.
   9
  10 ;; GNU Emacs is free software; you can redistribute it and/or modify
  11 ;; it under the terms of the GNU General Public License as published by
  12 ;; the Free Software Foundation; either version 2, or (at your option)
  13 ;; any later version.
  14
  15 ;; GNU Emacs is distributed in the hope that it will be useful,
  16 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 ;; GNU General Public License for more details.
  19
  20 ;; You should have received a copy of the GNU General Public License
  21 ;; along with GNU Emacs; see the file COPYING.  If not, write to the
  22 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  23 ;; Boston, MA 02111-1307, USA.
  24
  25 ;;; Commentary:
  26
  27 ;;; Code:
  28
  29 (require 'gnus)
  30 (require 'gnus-ems)
  31 (require 'message)
  32 (eval-when-compile (require 'cl))
  33
  34 ;; Added by Sudish Joseph <joseph@cis.ohio-state.edu>.
  35 (defvar gnus-post-method nil
  36   "*Preferred method for posting USENET news.
  37 If this variable is nil, Gnus will use the current method to decide
  38 which method to use when posting.  If it is non-nil, it will override
  39 the current method.  This method will not be used in mail groups and
  40 the like, only in \"real\" newsgroups.
  41
  42 The value must be a valid method as discussed in the documentation of
  43 `gnus-select-method'.  It can also be a list of methods.  If that is
  44 the case, the user will be queried for what select method to use when
  45 posting.")
  46
  47 (defvar gnus-outgoing-message-group nil
  48   "*All outgoing messages will be put in this group.
  49 If you want to store all your outgoing mail and articles in the group
  50 \"nnml:archive\", you set this variable to that value. This variable
  51 can also be a list of group names.
  52
  53 If you want to have greater control over what group to put each
  54 message in, you can set this variable to a function that checks the
  55 current newsgroup name and then returns a suitable group name (or list
  56 of names).")
  57
  58 (defvar gnus-mailing-list-groups nil
  59   "*Regexp matching groups that are really mailing lists.
  60 This is useful when you're reading a mailing list that has been
  61 gatewayed to a newsgroup, and you want to followup to an article in
  62 the group.")
  63
  64 (defvar gnus-sent-message-ids-file
  65   (nnheader-concat gnus-directory "Sent-Message-IDs")
  66   "File where Gnus saves a cache of sent message ids.")
  67
  68 (defvar gnus-sent-message-ids-length 1000
  69   "The number of sent Message-IDs to save.")
  70
  71 ;;; Internal variables.
  72
  73 (defvar gnus-message-buffer "*Mail Gnus*")
  74 (defvar gnus-article-copy nil)
  75 (defvar gnus-last-posting-server nil)
  76
  77 (eval-and-compile
  78   (autoload 'gnus-uu-post-news "gnus-uu" nil t)
  79   (autoload 'news-setup "rnewspost")
  80   (autoload 'news-reply-mode "rnewspost")
  81   (autoload 'rmail-dont-reply-to "mail-utils")
  82   (autoload 'rmail-output "rmailout"))
  83
  84 \f
  85 ;;;
  86 ;;; Gnus Posting Functions
  87 ;;;
  88
  89 (gnus-define-keys
  90  (gnus-summary-send-map "S" gnus-summary-mode-map)
  91  "p" gnus-summary-post-news
  92  "f" gnus-summary-followup
  93  "F" gnus-summary-followup-with-original
  94  "c" gnus-summary-cancel-article
  95  "s" gnus-summary-supersede-article
  96  "r" gnus-summary-reply
  97  "R" gnus-summary-reply-with-original
  98  "m" gnus-summary-mail-other-window
  99  "u" gnus-uu-post-news
 100  "om" gnus-summary-mail-forward
 101  "op" gnus-summary-post-forward
 102  "Om" gnus-uu-digest-mail-forward
 103  "Op" gnus-uu-digest-post-forward)
 104
 105 (gnus-define-keys
 106  (gnus-send-bounce-map "D" gnus-summary-send-map)
 107  "b" gnus-summary-resend-bounced-mail
 108 ; "c" gnus-summary-send-draft
 109  "r" gnus-summary-resend-message)
 110
 111 ;;; Internal functions.
 112
 113 (defvar gnus-article-reply nil)
 114 (defmacro gnus-setup-message (config &rest forms)
 115   (let ((winconf (make-symbol "winconf"))
 116         (buffer (make-symbol "buffer"))
 117         (article (make-symbol "article")))
 118     `(let ((,winconf (current-window-configuration))
 119            (,buffer (current-buffer))
 120            (,article (and gnus-article-reply (gnus-summary-article-number)))
 121            (message-header-setup-hook
 122             (copy-sequence message-header-setup-hook)))
 123        (add-hook 'message-header-setup-hook 'gnus-inews-insert-gcc)
 124        (add-hook 'message-header-setup-hook 'gnus-inews-insert-archive-gcc)
 125        ,@forms
 126        (gnus-inews-add-send-actions ,winconf ,buffer ,article)
 127        (setq gnus-message-buffer (current-buffer))
 128        (gnus-configure-windows ,config t))))
 129
 130 (defun gnus-inews-add-send-actions (winconf buffer article)
 131   (gnus-make-local-hook 'message-sent-hook)
 132   (gnus-add-hook 'message-sent-hook 'gnus-inews-do-gcc nil t)
 133   (setq message-post-method
 134         `(lambda (arg)
 135            (gnus-post-method arg ,gnus-newsgroup-name)))
 136   (setq message-newsreader (setq message-mailer (gnus-extended-version)))
 137   (message-add-action
 138    `(set-window-configuration ,winconf) 'exit 'postpone 'kill)
 139   (message-add-action
 140    `(when (buffer-name ,buffer)
 141       (save-excursion
 142         (set-buffer ,buffer)
 143         ,(when article
 144            `(gnus-summary-mark-article-as-replied ,article))))
 145    'send))
 146
 147 (put 'gnus-setup-message 'lisp-indent-function 1)
 148 (put 'gnus-setup-message 'lisp-indent-hook 1)
 149 (put 'gnus-setup-message 'edebug-form-spec '(form body))
 150
 151 ;;; Post news commands of Gnus group mode and summary mode
 152
 153 (defun gnus-group-mail ()
 154   "Start composing a mail."
 155   (interactive)
 156   (gnus-setup-message 'message
 157     (message-mail)))
 158
 159 (defun gnus-group-post-news (&optional arg)
 160   "Start composing a news message.
 161 If ARG, post to the group under point.
 162 If ARG is 1, prompt for a group name."
 163   (interactive "P")
 164   ;; Bind this variable here to make message mode hooks
 165   ;; work ok.
 166   (let ((gnus-newsgroup-name
 167          (if arg
 168              (if (= 1 (prefix-numeric-value arg))
 169                  (completing-read "Newsgroup: " gnus-active-hashtb nil
 170                                   (gnus-read-active-file-p))
 171                (gnus-group-group-name))
 172            "")))
 173     (gnus-post-news 'post gnus-newsgroup-name)))
 174
 175 (defun gnus-summary-post-news ()
 176   "Start composing a news message."
 177   (interactive)
 178   (gnus-set-global-variables)
 179   (gnus-post-news 'post gnus-newsgroup-name))
 180
 181 (defun gnus-summary-followup (yank &optional force-news)
 182   "Compose a followup to an article.
 183 If prefix argument YANK is non-nil, original article is yanked automatically."
 184   (interactive
 185    (list (and current-prefix-arg
 186               (gnus-summary-work-articles 1))))
 187   (gnus-set-global-variables)
 188   (when yank
 189     (gnus-summary-goto-subject (car yank)))
 190   (save-window-excursion
 191     (gnus-summary-select-article))
 192   (let ((headers (gnus-summary-article-header (gnus-summary-article-number)))
 193         (gnus-newsgroup-name gnus-newsgroup-name))
 194     ;; Send a followup.
 195     (gnus-post-news nil gnus-newsgroup-name
 196                     headers gnus-article-buffer
 197                     yank nil force-news)))
 198
 199 (defun gnus-summary-followup-with-original (n &optional force-news)
 200   "Compose a followup to an article and include the original article."
 201   (interactive "P")
 202   (gnus-summary-followup (gnus-summary-work-articles n) force-news))
 203
 204 (defun gnus-inews-yank-articles (articles)
 205   (let (beg article)
 206     (while (setq article (pop articles))
 207       (save-window-excursion
 208         (set-buffer gnus-summary-buffer)
 209         (gnus-summary-select-article nil nil nil article)
 210         (gnus-summary-remove-process-mark article))
 211       (gnus-copy-article-buffer)
 212       (let ((message-reply-buffer gnus-article-copy)
 213             (message-reply-headers gnus-current-headers))
 214         (message-yank-original)
 215         (setq beg (or beg (mark t))))
 216       (when articles (insert "\n")))
 217
 218     (push-mark)
 219     (goto-char beg)))
 220
 221 (defun gnus-summary-cancel-article (n)
 222   "Cancel an article you posted."
 223   (interactive "P")
 224   (gnus-set-global-variables)
 225   (let ((articles (gnus-summary-work-articles n))
 226         (message-post-method
 227          `(lambda (arg)
 228             (gnus-post-method nil ,gnus-newsgroup-name)))
 229         article)
 230     (while (setq article (pop articles))
 231       (when (gnus-summary-select-article t nil nil article)
 232         (when (gnus-eval-in-buffer-window
 233                gnus-original-article-buffer (message-cancel-news))
 234           (gnus-summary-mark-as-read article gnus-canceled-mark)
 235           (gnus-cache-remove-article 1))
 236         (gnus-article-hide-headers-if-wanted))
 237       (gnus-summary-remove-process-mark article))))
 238
 239 (defun gnus-summary-supersede-article ()
 240   "Compose an article that will supersede a previous article.
 241 This is done simply by taking the old article and adding a Supersedes
 242 header line with the old Message-ID."
 243   (interactive)
 244   (gnus-set-global-variables)
 245   (let ((article (gnus-summary-article-number)))
 246     (gnus-setup-message 'reply-yank
 247       (gnus-summary-select-article t)
 248       (set-buffer gnus-original-article-buffer)
 249       (message-supersede)
 250       (push
 251        `((lambda ()
 252            (gnus-cache-possibly-remove-article ,article nil nil nil t)))
 253        message-send-actions))))
 254
 255 \f
 256
 257 (defun gnus-copy-article-buffer (&optional article-buffer)
 258   ;; make a copy of the article buffer with all text properties removed
 259   ;; this copy is in the buffer gnus-article-copy.
 260   ;; if ARTICLE-BUFFER is nil, gnus-article-buffer is used
 261   ;; this buffer should be passed to all mail/news reply/post routines.
 262   (setq gnus-article-copy (get-buffer-create " *gnus article copy*"))
 263   (buffer-disable-undo gnus-article-copy)
 264   (or (memq gnus-article-copy gnus-buffer-list)
 265       (setq gnus-buffer-list (cons gnus-article-copy gnus-buffer-list)))
 266   (let ((article-buffer (or article-buffer gnus-article-buffer))
 267         end beg contents)
 268     (when (and (get-buffer article-buffer)
 269                (buffer-name (get-buffer article-buffer)))
 270       (save-excursion
 271         (set-buffer article-buffer)
 272         (save-restriction
 273           (widen)
 274           (setq contents (format "%s" (buffer-string)))
 275           (set-buffer gnus-original-article-buffer)
 276           (goto-char (point-min))
 277           (while (looking-at message-unix-mail-delimiter)
 278             (forward-line 1))
 279           (setq beg (point))
 280           (setq end (or (search-forward "\n\n" nil t) (point)))
 281           (set-buffer gnus-article-copy)
 282           (erase-buffer)
 283           (insert contents)
 284           (delete-region (goto-char (point-min))
 285                          (or (search-forward "\n\n" nil t) (point)))
 286           (insert-buffer-substring gnus-original-article-buffer beg end)))
 287       gnus-article-copy)))
 288
 289 (defun gnus-post-news (post &optional group header article-buffer yank subject
 290                             force-news)
 291   (when article-buffer
 292     (gnus-copy-article-buffer))
 293   (let ((gnus-article-reply article-buffer))
 294     (gnus-setup-message (cond (yank 'reply-yank)
 295                               (article-buffer 'reply)
 296                               (t 'message))
 297       (let* ((group (or group gnus-newsgroup-name))
 298              (pgroup group)
 299              to-address to-group mailing-list to-list)
 300         (when group
 301           (setq to-address (gnus-group-get-parameter group 'to-address)
 302                 to-group (gnus-group-get-parameter group 'to-group)
 303                 to-list (gnus-group-get-parameter group 'to-list)
 304                 mailing-list (when gnus-mailing-list-groups
 305                                (string-match gnus-mailing-list-groups group))
 306                 group (gnus-group-real-name group)))
 307         (if (or (and to-group
 308                      (gnus-news-group-p to-group))
 309                 force-news
 310                 (and (gnus-news-group-p
 311                       (or pgroup gnus-newsgroup-name)
 312                       (if header (mail-header-number header)
 313                         gnus-current-article))
 314                      (not mailing-list)
 315                      (not to-list)
 316                      (not to-address)))
 317             ;; This is news.
 318             (if post
 319                 (message-news (or to-group group))
 320               (set-buffer gnus-article-copy)
 321               (message-followup))
 322           ;; The is mail.
 323           (if post
 324               (progn
 325                 (message-mail (or to-address to-list))
 326                 ;; Arrange for mail groups that have no `to-address' to
 327                 ;; get that when the user sends off the mail.
 328                 (push (list 'gnus-inews-add-to-address group)
 329                       message-send-actions))
 330             (set-buffer gnus-article-copy)
 331             (message-wide-reply to-address)))
 332         (when yank
 333           (gnus-inews-yank-articles yank))))))
 334
 335 (defun gnus-post-method (arg group &optional silent)
 336   "Return the posting method based on GROUP and ARG.
 337 If SILENT, don't prompt the user."
 338   (let ((group-method (gnus-find-method-for-group group)))
 339     (cond
 340      ;; If the group-method is nil (which shouldn't happen) we use
 341      ;; the default method.
 342      ((null arg)
 343       (or gnus-post-method gnus-select-method message-post-method))
 344      ;; We want this group's method.
 345      ((and arg (not (eq arg 0)))
 346       group-method)
 347      ;; We query the user for a post method.
 348      ((or arg
 349           (and gnus-post-method
 350                (listp (car gnus-post-method))))
 351       (let* ((methods
 352               ;; Collect all methods we know about.
 353               (append
 354                (when gnus-post-method
 355                  (if (listp (car gnus-post-method))
 356                      gnus-post-method
 357                    (list gnus-post-method)))
 358                gnus-secondary-select-methods
 359                (list gnus-select-method)
 360                (list group-method)))
 361              method-alist post-methods method)
 362         ;; Weed out all mail methods.
 363         (while methods
 364           (setq method (gnus-server-get-method "" (pop methods)))
 365           (when (or (gnus-method-option-p method 'post)
 366                     (gnus-method-option-p method 'post-mail))
 367             (push method post-methods)))
 368         ;; Create a name-method alist.
 369         (setq method-alist
 370               (mapcar
 371                (lambda (m)
 372                  (list (concat (cadr m) " (" (symbol-name (car m)) ")") m))
 373                post-methods))
 374         ;; Query the user.
 375         (cadr
 376          (assoc
 377           (setq gnus-last-posting-server
 378                 (if (and silent
 379                          gnus-last-posting-server)
 380                     ;; Just use the last value.
 381                     gnus-last-posting-server
 382                   (completing-read
 383                    "Posting method: " method-alist nil t
 384                    (cons (or gnus-last-posting-server "") 0))))
 385           method-alist))))
 386      ;; Override normal method.
 387      ((and gnus-post-method
 388            (or (gnus-method-option-p group-method 'post)
 389                (gnus-method-option-p group-method 'post-mail)))
 390       gnus-post-method)
 391      ;; Perhaps this is a mail group?
 392      ((and (not (gnus-member-of-valid 'post group))
 393            (not (gnus-method-option-p group-method 'post-mail)))
 394       group-method)
 395      ;; Use the normal select method.
 396      (t gnus-select-method))))
 397
 398 (defun gnus-inews-narrow-to-headers ()
 399   (widen)
 400   (narrow-to-region
 401    (goto-char (point-min))
 402    (or (and (re-search-forward
 403              (concat "^" (regexp-quote mail-header-separator) "$") nil t)
 404             (match-beginning 0))
 405        (point-max)))
 406   (goto-char (point-min)))
 407
 408 ;;;
 409 ;;; Check whether the message has been sent already.
 410 ;;;
 411
 412 (defvar gnus-inews-sent-ids nil)
 413
 414 (defun gnus-inews-reject-message ()
 415   "Check whether this message has already been sent."
 416   (when gnus-sent-message-ids-file
 417     (let ((message-id (save-restriction (gnus-inews-narrow-to-headers)
 418                                         (mail-fetch-field "message-id")))
 419           end)
 420       (when message-id
 421         (unless gnus-inews-sent-ids
 422           (condition-case ()
 423               (load  t t t)
 424             (error nil)))
 425         (if (member message-id gnus-inews-sent-ids)
 426             ;; Reject this message.
 427             (not (gnus-yes-or-no-p
 428                   (format "Message %s already sent.  Send anyway? "
 429                           message-id)))
 430           (push message-id gnus-inews-sent-ids)
 431           ;; Chop off the last Message-IDs.
 432           (when (setq end (nthcdr gnus-sent-message-ids-length
 433                                   gnus-inews-sent-ids))
 434             (setcdr end nil))
 435           (nnheader-temp-write gnus-sent-message-ids-file
 436             (prin1 `(setq gnus-inews-sent-ids ',gnus-inews-sent-ids)
 437                    (current-buffer)))
 438           nil)))))
 439
 440 \f
 441
 442 ;; Dummy to avoid byte-compile warning.
 443 (defvar nnspool-rejected-article-hook)
 444
 445 ;;; Since the X-Newsreader/X-Mailer are ``vanity'' headers, they might
 446 ;;; as well include the Emacs version as well.
 447 ;;; The following function works with later GNU Emacs, and XEmacs.
 448 (defun gnus-extended-version ()
 449   "Stringified Gnus version and Emacs version"
 450   (interactive)
 451   (concat
 452    gnus-version
 453    "/"
 454    (cond
 455     ((string-match "^\\([0-9]+\\.[0-9]+\\)\\.[.0-9]+$" emacs-version)
 456      (concat "Emacs " (substring emacs-version
 457                                  (match-beginning 1)
 458                                  (match-end 1))))
 459     ((string-match "\\([A-Z]*[Mm][Aa][Cc][Ss]\\)" emacs-version)
 460      (concat (substring emacs-version
 461                         (match-beginning 1)
 462                         (match-end 1))
 463              (format " %d.%d" emacs-major-version emacs-minor-version)))
 464     (t emacs-version))))
 465
 466 ;; Written by "Mr. Per Persson" <pp@solace.mh.se>.
 467 (defun gnus-inews-insert-mime-headers ()
 468   (goto-char (point-min))
 469   (let ((mail-header-separator
 470          (progn
 471            (goto-char (point-min))
 472            (if (and (search-forward (concat "\n" mail-header-separator "\n")
 473                                     nil t)
 474                     (not (search-backward "\n\n" nil t)))
 475                mail-header-separator
 476              ""))))
 477     (or (mail-position-on-field "Mime-Version")
 478         (insert "1.0")
 479         (cond ((save-restriction
 480                  (widen)
 481                  (goto-char (point-min))
 482                  (re-search-forward "[\200-\377]" nil t))
 483                (or (mail-position-on-field "Content-Type")
 484                    (insert "text/plain; charset=ISO-8859-1"))
 485                (or (mail-position-on-field "Content-Transfer-Encoding")
 486                    (insert "8bit")))
 487               (t (or (mail-position-on-field "Content-Type")
 488                      (insert "text/plain; charset=US-ASCII"))
 489                  (or (mail-position-on-field "Content-Transfer-Encoding")
 490                      (insert "7bit")))))))
 491
 492 \f
 493 ;;;
 494 ;;; Gnus Mail Functions
 495 ;;;
 496
 497 ;;; Mail reply commands of Gnus summary mode
 498
 499 (defun gnus-summary-reply (&optional yank)
 500   "Reply mail to news author.
 501 If prefix argument YANK is non-nil, original article is yanked automatically."
 502   (interactive
 503    (list (and current-prefix-arg
 504               (gnus-summary-work-articles 1))))
 505   ;; Bug fix by jbw@bigbird.bu.edu (Joe Wells)
 506   ;; Stripping headers should be specified with mail-yank-ignored-headers.
 507   (gnus-set-global-variables)
 508   (when yank
 509     (gnus-summary-goto-subject (car yank)))
 510   (let ((gnus-article-reply t))
 511     (gnus-setup-message (if yank 'reply-yank 'reply)
 512       (gnus-summary-select-article)
 513       (set-buffer (gnus-copy-article-buffer))
 514       (message-reply nil nil (gnus-group-get-parameter
 515                               gnus-newsgroup-name 'broken-reply-to))
 516       (when yank
 517         (gnus-inews-yank-articles yank)))))
 518
 519 (defun gnus-summary-reply-with-original (n)
 520   "Reply mail to news author with original article."
 521   (interactive "P")
 522   (gnus-summary-reply (gnus-summary-work-articles n)))
 523
 524 (defun gnus-summary-mail-forward (&optional post)
 525   "Forward the current message to another user."
 526   (interactive "P")
 527   (gnus-set-global-variables)
 528   (gnus-setup-message 'forward
 529     (gnus-summary-select-article)
 530     (set-buffer gnus-original-article-buffer)
 531     (message-forward post)))
 532
 533 (defun gnus-summary-resend-message (address)
 534   "Resend the current article to ADDRESS."
 535   (interactive "sResend message to: ")
 536   (gnus-summary-select-article)
 537   (save-excursion
 538     (set-buffer gnus-original-article-buffer)
 539     (message-resend address)))
 540
 541 (defun gnus-summary-post-forward ()
 542   "Forward the current article to a newsgroup."
 543   (interactive)
 544   (gnus-summary-mail-forward t))
 545
 546 (defvar gnus-nastygram-message
 547   "The following article was inappropriately posted to %s.\n"
 548   "Format string to insert in nastygrams.
 549 The current group name will be inserted at \"%s\".")
 550
 551 (defun gnus-summary-mail-nastygram (n)
 552   "Send a nastygram to the author of the current article."
 553   (interactive "P")
 554   (if (or gnus-expert-user
 555           (gnus-y-or-n-p
 556            "Really send a nastygram to the author of the current article? "))
 557       (let ((group gnus-newsgroup-name))
 558         (gnus-summary-reply-with-original n)
 559         (set-buffer gnus-message-buffer)
 560         (insert (format gnus-nastygram-message group))
 561         (message-send-and-exit))))
 562
 563 (defun gnus-summary-mail-other-window ()
 564   "Compose mail in other window."
 565   (interactive)
 566   (gnus-setup-message 'message
 567     (message-mail)))
 568
 569 (defun gnus-mail-parse-comma-list ()
 570   (let (accumulated
 571         beg)
 572     (skip-chars-forward " ")
 573     (while (not (eobp))
 574       (setq beg (point))
 575       (skip-chars-forward "^,")
 576       (while (zerop
 577               (save-excursion
 578                 (save-restriction
 579                   (let ((i 0))
 580                     (narrow-to-region beg (point))
 581                     (goto-char beg)
 582                     (logand (progn
 583                               (while (search-forward "\"" nil t)
 584                                 (incf i))
 585                               (if (zerop i) 2 i)) 2)))))
 586         (skip-chars-forward ",")
 587         (skip-chars-forward "^,"))
 588       (skip-chars-backward " ")
 589       (setq accumulated
 590             (cons (buffer-substring beg (point))
 591                   accumulated))
 592       (skip-chars-forward "^,")
 593       (skip-chars-forward ", "))
 594     accumulated))
 595
 596 (defun gnus-mail-yank-original ()
 597   (interactive)
 598   (save-excursion
 599     (mail-yank-original nil))
 600   (or mail-yank-hooks mail-citation-hook
 601       (run-hooks 'news-reply-header-hook)))
 602
 603 (defun gnus-inews-add-to-address (group)
 604   (let ((to-address (mail-fetch-field "to")))
 605     (when (and to-address
 606                (gnus-alive-p))
 607       ;; This mail group doesn't have a `to-list', so we add one
 608       ;; here.  Magic!
 609       (gnus-group-add-parameter group (cons 'to-list to-address)))))
 610
 611 (defun gnus-put-message ()
 612   "Put the current message in some group and return to Gnus."
 613   (interactive)
 614   (let ((reply gnus-article-reply)
 615         (winconf gnus-prev-winconf)
 616         (group gnus-newsgroup-name))
 617
 618     (or (and group (not (gnus-group-read-only-p group)))
 619         (setq group (read-string "Put in group: " nil
 620                                  (gnus-writable-groups))))
 621     (and (gnus-gethash group gnus-newsrc-hashtb)
 622          (error "No such group: %s" group))
 623
 624     (save-excursion
 625       (save-restriction
 626         (widen)
 627         (gnus-inews-narrow-to-headers)
 628         (let (gnus-deletable-headers)
 629           (if (message-news-p)
 630               (message-generate-headers message-required-news-headers)
 631             (message-generate-headers message-required-mail-headers)))
 632         (goto-char (point-max))
 633         (insert "Gcc: " group "\n")
 634         (widen)))
 635
 636     (gnus-inews-do-gcc)
 637
 638     (if (get-buffer gnus-group-buffer)
 639         (progn
 640           (if (gnus-buffer-exists-p (car-safe reply))
 641               (progn
 642                 (set-buffer (car reply))
 643                 (and (cdr reply)
 644                      (gnus-summary-mark-article-as-replied
 645                       (cdr reply)))))
 646           (and winconf (set-window-configuration winconf))))))
 647
 648 (defun gnus-article-mail (yank)
 649   "Send a reply to the address near point.
 650 If YANK is non-nil, include the original article."
 651   (interactive "P")
 652   (let ((address
 653          (buffer-substring
 654           (save-excursion (re-search-backward "[ \t\n]" nil t) (1+ (point)))
 655           (save-excursion (re-search-forward "[ \t\n]" nil t) (1- (point))))))
 656     (when address
 657       (message-reply address)
 658       (when yank
 659         (gnus-inews-yank-articles (list (cdr gnus-article-current)))))))
 660
 661 (defun gnus-bug ()
 662   "Send a bug report to the Gnus maintainers."
 663   (interactive)
 664   (gnus-setup-message 'bug
 665     (delete-other-windows)
 666     (switch-to-buffer "*Gnus Help Bug*")
 667     (erase-buffer)
 668     (insert gnus-bug-message)
 669     (goto-char (point-min))
 670     (message-pop-to-buffer "*Gnus Bug*")
 671     (message-setup `((To . ,gnus-maintainer) (Subject . "")))
 672     (push `(gnus-bug-kill-buffer) message-send-actions)
 673     (goto-char (point-min))
 674     (re-search-forward (concat "^" (regexp-quote mail-header-separator) "$"))
 675     (forward-line 1)
 676     (insert (gnus-version) "\n")
 677     (insert (emacs-version))
 678     (insert "\n\n\n\n\n")
 679     (gnus-debug)
 680     (goto-char (point-min))
 681     (search-forward "Subject: " nil t)
 682     (message "")))
 683
 684 (defun gnus-bug-kill-buffer ()
 685   (and (get-buffer "*Gnus Help Bug*")
 686        (kill-buffer "*Gnus Help Bug*")))
 687
 688 (defun gnus-debug ()
 689   "Attemps to go through the Gnus source file and report what variables have been changed.
 690 The source file has to be in the Emacs load path."
 691   (interactive)
 692   (let ((files '("gnus.el" "gnus-msg.el" "gnus-score.el" "nnmail.el"
 693                  "message.el"))
 694         file dirs expr olist sym)
 695     (gnus-message 4 "Please wait while we snoop your variables...")
 696     (sit-for 0)
 697     (save-excursion
 698       (set-buffer (get-buffer-create " *gnus bug info*"))
 699       (buffer-disable-undo (current-buffer))
 700       (while files
 701         (erase-buffer)
 702         (setq dirs load-path)
 703         (while dirs
 704           (if (or (not (car dirs))
 705                   (not (stringp (car dirs)))
 706                   (not (file-exists-p
 707                         (setq file (concat (file-name-as-directory
 708                                             (car dirs)) (car files))))))
 709               (setq dirs (cdr dirs))
 710             (setq dirs nil)
 711             (insert-file-contents file)
 712             (goto-char (point-min))
 713             (if (not (re-search-forward "^;;* *Internal variables" nil t))
 714                 (gnus-message 4 "Malformed sources in file %s" file)
 715               (narrow-to-region (point-min) (point))
 716               (goto-char (point-min))
 717               (while (setq expr (condition-case ()
 718                                     (read (current-buffer)) (error nil)))
 719                 (condition-case ()
 720                     (and (eq (car expr) 'defvar)
 721                          (stringp (nth 3 expr))
 722                          (or (not (boundp (nth 1 expr)))
 723                              (not (equal (eval (nth 2 expr))
 724                                          (symbol-value (nth 1 expr)))))
 725                          (setq olist (cons (nth 1 expr) olist)))
 726                   (error nil))))))
 727         (setq files (cdr files)))
 728       (kill-buffer (current-buffer)))
 729     (when (setq olist (nreverse olist))
 730       (insert "------------------ Environment follows ------------------\n\n"))
 731     (while olist
 732       (if (boundp (car olist))
 733           (condition-case ()
 734               (pp `(setq ,(car olist)
 735                          ,(if (or (consp (setq sym (symbol-value (car olist))))
 736                                   (and (symbolp sym)
 737                                        (not (or (eq sym nil)
 738                                                 (eq sym t)))))
 739                               (list 'quote (symbol-value (car olist)))
 740                             (symbol-value (car olist))))
 741                   (current-buffer))
 742             (error
 743              (format "(setq %s 'whatever)\n" (car olist))))
 744         (insert ";; (makeunbound '" (symbol-name (car olist)) ")\n"))
 745       (setq olist (cdr olist)))
 746     (insert "\n\n")
 747     ;; Remove any null chars - they seem to cause trouble for some
 748     ;; mailers. (Byte-compiled output from the stuff above.)
 749     (goto-char (point-min))
 750     (while (re-search-forward "[\000\200]" nil t)
 751       (replace-match "" t t))))
 752
 753 ;;; Treatment of rejected articles.
 754 ;;; Bounced mail.
 755
 756 (defun gnus-summary-resend-bounced-mail (&optional fetch)
 757   "Re-mail the current message.
 758 This only makes sense if the current message is a bounce message than
 759 contains some mail you have written which has been bounced back to
 760 you.
 761 If FETCH, try to fetch the article that this is a reply to, if indeed
 762 this is a reply."
 763   (interactive "P")
 764   (gnus-summary-select-article t)
 765   (set-buffer gnus-original-article-buffer)
 766   (gnus-setup-message 'compose-bounce
 767     (let* ((references (mail-fetch-field "references"))
 768            (parent (and references (gnus-parent-id references))))
 769       (message-bounce)
 770       ;; If there are references, we fetch the article we answered to.
 771       (and fetch parent
 772            (gnus-summary-refer-article parent)
 773            (gnus-summary-show-all-headers)))))
 774
 775 ;;; Gcc handling.
 776
 777 ;; Do Gcc handling, which copied the message over to some group.
 778 (defun gnus-inews-do-gcc (&optional gcc)
 779   (when (gnus-alive-p)
 780     (save-excursion
 781       (save-restriction
 782         (message-narrow-to-headers)
 783         (let ((gcc (or gcc (mail-fetch-field "gcc" nil t)))
 784               (cur (current-buffer))
 785               groups group method)
 786           (when gcc
 787             (message-remove-header "gcc")
 788             (widen)
 789             (setq groups (message-tokenize-header gcc " ,"))
 790             ;; Copy the article over to some group(s).
 791             (while (setq group (pop groups))
 792               (gnus-check-server
 793                (setq method
 794                      (cond ((and (null (gnus-get-info group))
 795                                  (eq (car gnus-message-archive-method)
 796                                      (car
 797                                       (gnus-server-to-method
 798                                        (gnus-group-method group)))))
 799                             ;; If the group doesn't exist, we assume
 800                             ;; it's an archive group...
 801                             gnus-message-archive-method)
 802                            ;; Use the method.
 803                            ((gnus-info-method (gnus-get-info group))
 804                             (gnus-info-method (gnus-get-info group)))
 805                            ;; Find the method.
 806                            (t (gnus-group-method group)))))
 807               (gnus-check-server method)
 808               (unless (gnus-request-group group t method)
 809                 (gnus-request-create-group group method))
 810               (save-excursion
 811                 (nnheader-set-temp-buffer " *acc*")
 812                 (insert-buffer-substring cur)
 813                 (goto-char (point-min))
 814                 (when (re-search-forward
 815                        (concat "^" (regexp-quote mail-header-separator) "$")
 816                        nil t)
 817                   (replace-match "" t t ))
 818                 (unless (gnus-request-accept-article group method t)
 819                   (gnus-message 1 "Couldn't store article in group %s: %s"
 820                                 group (gnus-status-message method))
 821                   (sit-for 2))
 822                 (kill-buffer (current-buffer))))))))))
 823
 824 (defun gnus-inews-insert-gcc ()
 825   "Insert Gcc headers based on `gnus-outgoing-message-group'."
 826   (save-excursion
 827     (save-restriction
 828       (gnus-inews-narrow-to-headers)
 829       (let* ((group gnus-outgoing-message-group)
 830              (gcc (cond
 831                    ((gnus-functionp group)
 832                     (funcall group))
 833                    ((or (stringp group) (list group))
 834                     group))))
 835         (when gcc
 836           (insert "Gcc: "
 837                   (if (stringp gcc) gcc
 838                     (mapconcat 'identity gcc " "))
 839                   "\n"))))))
 840
 841 (defun gnus-inews-insert-archive-gcc (&optional group)
 842   "Insert the Gcc to say where the article is to be archived."
 843   (let* ((var gnus-message-archive-group)
 844          (group (or group gnus-newsgroup-name ""))
 845          result
 846          (groups
 847           (cond
 848            ((null gnus-message-archive-method)
 849             ;; Ignore.
 850             nil)
 851            ((stringp var)
 852             ;; Just a single group.
 853             (list var))
 854            ((null var)
 855             ;; We don't want this.
 856             nil)
 857            ((and (listp var) (stringp (car var)))
 858             ;; A list of groups.
 859             var)
 860            ((gnus-functionp var)
 861             ;; A function.
 862             (funcall var group))
 863            (t
 864             ;; An alist of regexps/functions/forms.
 865             (while (and var
 866                         (not
 867                          (setq result
 868                                (cond
 869                                 ((stringp (caar var))
 870                                  ;; Regexp.
 871                                  (when (string-match (caar var) group)
 872                                    (cdar var)))
 873                                 ((gnus-functionp (car var))
 874                                  ;; Function.
 875                                  (funcall (car var) group))
 876                                 (t
 877                                  (eval (car var)))))))
 878               (setq var (cdr var)))
 879             result)))
 880          name)
 881     (when groups
 882       (when (stringp groups)
 883         (setq groups (list groups)))
 884       (save-excursion
 885         (save-restriction
 886           (gnus-inews-narrow-to-headers)
 887           (goto-char (point-max))
 888           (insert "Gcc: ")
 889           (while (setq name (pop groups))
 890             (insert (if (string-match ":" name)
 891                         name
 892                       (gnus-group-prefixed-name
 893                        name gnus-message-archive-method)))
 894             (if groups (insert " ")))
 895           (insert "\n"))))))
 896
 897 (defun gnus-summary-send-draft ()
 898   "Enter a mail/post buffer to edit and send the draft."
 899   (interactive)
 900   (gnus-set-global-variables)
 901   (let (buf)
 902     (if (not (setq buf (gnus-request-restore-buffer
 903                         (gnus-summary-article-number) gnus-newsgroup-name)))
 904         (error "Couldn't restore the article")
 905       (switch-to-buffer buf)
 906       (when (eq major-mode 'news-reply-mode)
 907         (local-set-key "\C-c\C-c" 'gnus-inews-news))
 908       ;; Insert the separator.
 909       (goto-char (point-min))
 910       (search-forward "\n\n")
 911       (forward-char -1)
 912       (insert mail-header-separator)
 913       ;; Configure windows.
 914       (let ((gnus-draft-buffer (current-buffer)))
 915         (gnus-configure-windows 'draft t)
 916         (goto-char (point))))))
 917
 918 (gnus-add-shutdown 'gnus-inews-close 'gnus)
 919
 920 (defun gnus-inews-close ()
 921   (setq gnus-inews-sent-ids nil))
 922
 923 ;;; Allow redefinition of functions.
 924
 925 (gnus-ems-redefine)
 926
 927 (provide 'gnus-msg)
 928
 929 ;;; gnus-msg.el ends here