lisp/gnus-msg.el

   1 ;;; gnus-msg.el --- mail and post interface for Gnus
   2 ;; Copyright (C) 1995 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
  22 ;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
  23
  24 ;;; Commentary:
  25
  26 ;;; Code:
  27
  28 (require 'gnus)
  29 (require 'sendmail)
  30 (require 'gnus-ems)
  31
  32 (defvar gnus-organization-file "/usr/lib/news/organization"
  33   "*Local news organization file.")
  34
  35 (defvar gnus-prepare-article-hook (list 'gnus-inews-insert-signature)
  36   "*A hook called after preparing body, but before preparing header headers.
  37 The default hook (`gnus-inews-insert-signature') inserts a signature
  38 file specified by the variable `gnus-signature-file'.")
  39
  40 (defvar gnus-post-prepare-function nil
  41   "*Function that is run after a post buffer has been prepared.
  42 It is called with the name of the newsgroup that is posted to. It
  43 might be used, for instance, for inserting signatures based on the
  44 newsgroup name. (In that case, `gnus-signature-file' and
  45 `mail-signature' should both be set to nil).")
  46
  47 (defvar gnus-post-prepare-hook nil
  48   "*Hook that is run after a post buffer has been prepared.
  49 If you want to insert the signature, you might put
  50 `gnus-inews-insert-signature' in this hook.")
  51
  52 (defvar gnus-use-followup-to t
  53   "*Specifies what to do with Followup-To header.
  54 If nil, ignore the header. If it is t, use its value, but ignore
  55 `poster'.  If it is the symbol `ask', query the user before posting.
  56 If it is the symbol `use', always use the value.")
  57
  58 (defvar gnus-followup-to-function nil
  59   "*A variable that contains a function that returns a followup address.
  60 The function will be called in the buffer of the article that is being
  61 followed up. The buffer will be narrowed to the headers of the
  62 article. To pick header headers, one might use `mail-fetch-field'.  The
  63 function will be called with the name of the current newsgroup as the
  64 argument.
  65
  66 Here's an example `gnus-followup-to-function':
  67
  68 (setq gnus-followup-to-function
  69       (lambda (group)
  70         (cond ((string= group \"mail.list\")
  71                (or (mail-fetch-field \"sender\")
  72                    (mail-fetch-field \"from\")))
  73               (t
  74                (or (mail-fetch-field \"reply-to\")
  75                    (mail-fetch-field \"from\"))))))")
  76
  77 (defvar gnus-reply-to-function nil
  78   "*A variable that contains a function that returns a reply address.
  79 See the `gnus-followup-to-function' variable for an explanation of how
  80 this variable is used.
  81
  82 This function should return a string that will be used to fill in the
  83 header.  This function may also return a list.  In that case, every
  84 list element should be a cons where the first car should be a string
  85 with the header name, and the cdr should be a string with the header
  86 value.")
  87
  88 (defvar gnus-author-copy (getenv "AUTHORCOPY")
  89   "*Save outgoing articles in this file.
  90 Initialized from the AUTHORCOPY environment variable.
  91
  92 If this variable begins with the character \"|\", outgoing articles
  93 will be piped to the named program. It is possible to save an article
  94 in an MH folder as follows:
  95
  96 \(setq gnus-author-copy \"|/usr/local/lib/mh/rcvstore +Article\")
  97
  98 If the first character is not a pipe, articles are saved using the
  99 function specified by the `gnus-author-copy-saver' variable.")
 100
 101 (defvar gnus-mail-self-blind nil
 102   "*Non-nil means insert a BCC header in all outgoing articles.
 103 This will result in having a copy of the article mailed to yourself.
 104 The BCC header is inserted when the post buffer is initialized, so you
 105 can remove or alter the BCC header to override the default.")
 106
 107 (defvar gnus-author-copy-saver (function rmail-output)
 108   "*A function called to save outgoing articles.
 109 This function will be called with the same of the file to store the
 110 article in. The default function is `rmail-output' which saves in Unix
 111 mailbox format.")
 112
 113 (defvar gnus-user-login-name nil
 114   "*The login name of the user.
 115 Got from the function `user-login-name' if undefined.")
 116
 117 (defvar gnus-user-full-name nil
 118   "*The full name of the user.
 119 Got from the NAME environment variable if undefined.")
 120
 121 (defvar gnus-user-from-line nil
 122   "*Your full, complete e-mail address.
 123 Overrides the other Gnus variables if it is non-nil.
 124
 125 Here are two example values of this variable:
 126
 127  \"Lars Magne Ingebrigtsen <larsi@ifi.uio.no>\"
 128
 129 and
 130
 131  \"larsi@ifi.uio.no (Lars Magne Ingebrigtsen)\"
 132
 133 The first version is recommended, but the name has to be quoted if it
 134 contains non-alphanumerical characters.")
 135
 136 (defvar gnus-signature-file "~/.signature"
 137   "*Your signature file.
 138 If the variable is a string that doesn't correspond to a file, the
 139 string itself is inserted.")
 140
 141 (defvar gnus-signature-function nil
 142   "*A function that should return a signature file name.
 143 The function will be called with the name of the newsgroup being
 144 posted to.
 145 If the function returns a string that doesn't correspond to a file, the
 146 string itself is inserted.
 147 If the function returns nil, the `gnus-signature-file' variable will
 148 be used instead.")
 149
 150 (defvar gnus-required-headers
 151   '(From Date Newsgroups Subject Message-ID Organization Lines X-Newsreader)
 152   "*Headers to be generated or prompted for when posting an article.
 153 RFC977 and RFC1036 require From, Date, Newsgroups, Subject,
 154 Message-ID.  Organization, Lines and X-Newsreader are optional.  If
 155 you want Gnus not to insert some header, remove it from this list.")
 156
 157 (defvar gnus-deletable-headers '(Message-ID Date)
 158   "*Headers to be deleted if they already exists and were generated by Gnus previously.")
 159
 160 (defvar gnus-removable-headers '(NNTP-Posting-Host Bcc Xref)
 161   "*Headers to be removed unconditionally before posting.")
 162
 163 (defvar gnus-check-before-posting
 164   '(subject-cmsg multiple-headers sendsys message-id from
 165                  long-lines control-chars size new-text
 166                  signature)
 167   "In non-nil, Gnus will attempt to run some checks on outgoing posts.
 168 If this variable is t, Gnus will check everything it can.  If it is a
 169 list, then those elements in that list will be checked.")
 170
 171 (defvar gnus-delete-supersedes-headers
 172   "^Path:\\|^Date\\|^NNTP-Posting-Host:\\|^Supersedes:"
 173   "*Header lines matching this regexp will be deleted before posting.
 174 It's best to delete old Path and Date headers before posting to avoid
 175 any confusion.")
 176
 177 (defvar gnus-auto-mail-to-author nil
 178   "*If non-nil, mail the authors of articles a copy of your follow-ups.
 179 If this variable is `ask', the user will be prompted for whether to
 180 mail a copy.  The string given by `gnus-mail-courtesy-message' will be
 181 inserted at the beginning of the mail copy.
 182
 183 Mail is sent using the function specified by the
 184 `gnus-mail-send-method' variable.")
 185
 186 ;; Added by Ethan Bradford <ethanb@ptolemy.astro.washington.edu>.
 187 (defvar gnus-mail-courtesy-message
 188   "The following message is a courtesy copy of an article\nthat has been posted as well.\n\n"
 189   "*This is inserted at the start of a mailed copy of a posted message.
 190 If this variable is nil, no such courtesy message will be added.")
 191
 192 (defvar gnus-mail-reply-method (function gnus-mail-reply-using-mail)
 193   "*Function to compose a reply.
 194 Three pre-made functions are `gnus-mail-reply-using-mail' (sendmail);
 195 `gnus-mail-reply-using-mhe' (MH-E); and `gnus-mail-reply-using-vm'.")
 196
 197 (defvar gnus-mail-forward-method (function gnus-mail-forward-using-mail)
 198   "*Function to forward the current message to another user.
 199 Three pre-made functions are `gnus-mail-forward-using-mail' (sendmail);
 200 `gnus-mail-forward-using-mhe' (MH-E); and `gnus-mail-forward-using-vm'.")
 201
 202 (defvar gnus-mail-other-window-method 'gnus-mail-other-window-using-mail
 203   "*Function to compose mail in the other window.
 204 Three pre-made functions are `gnus-mail-other-window-using-mail'
 205 (sendmail); `gnus-mail-other-window-using-mhe' (MH-E); and
 206 `gnus-mail-other-window-using-vm'.")
 207
 208 (defvar gnus-mail-send-method send-mail-function
 209   "*Function to mail a message which is also being posted as an article.
 210 The message must have To or Cc header.  The default is copied from
 211 the variable `send-mail-function'.")
 212
 213 (defvar gnus-inews-article-function 'gnus-inews-article
 214   "*Function to post an article.")
 215
 216 (defvar gnus-inews-article-hook (list 'gnus-inews-do-fcc)
 217   "*A hook called before finally posting an article.
 218 The default hook (`gnus-inews-do-fcc') does FCC processing (ie. saves
 219 the article to a file).")
 220
 221 (defvar gnus-inews-article-header-hook nil
 222   "*A hook called after inserting the headers in an article to be posted.
 223 The hook is called from the *post-news* buffer, narrowed to the
 224 headers.")
 225
 226 (defvar gnus-mail-hook nil
 227   "*A hook called as the last thing after setting up a mail buffer.")
 228
 229 ;;; Internal variables.
 230
 231 (defvar gnus-post-news-buffer "*post-news*")
 232 (defvar gnus-mail-buffer "*mail*")
 233 (defvar gnus-summary-send-map nil)
 234 (defvar gnus-article-copy nil)
 235 (defvar gnus-reply-subject nil)
 236
 237 (eval-and-compile
 238   (autoload 'gnus-uu-post-news "gnus-uu" nil t)
 239   (autoload 'rmail-output "rmailout"))
 240
 241 \f
 242 ;;;
 243 ;;; Gnus Posting Functions
 244 ;;;
 245
 246 (define-prefix-command 'gnus-summary-send-map)
 247 (define-key gnus-summary-mode-map "S" 'gnus-summary-send-map)
 248 (define-key gnus-summary-send-map "p" 'gnus-summary-post-news)
 249 (define-key gnus-summary-send-map "f" 'gnus-summary-followup)
 250 (define-key gnus-summary-send-map "F" 'gnus-summary-followup-with-original)
 251 (define-key gnus-summary-send-map "b" 'gnus-summary-followup-and-reply)
 252 (define-key gnus-summary-send-map "B" 'gnus-summary-followup-and-reply-with-original)
 253 (define-key gnus-summary-send-map "c" 'gnus-summary-cancel-article)
 254 (define-key gnus-summary-send-map "s" 'gnus-summary-supersede-article)
 255 (define-key gnus-summary-send-map "r" 'gnus-summary-reply)
 256 (define-key gnus-summary-send-map "R" 'gnus-summary-reply-with-original)
 257 (define-key gnus-summary-send-map "m" 'gnus-summary-mail-other-window)
 258 (define-key gnus-summary-send-map "u" 'gnus-uu-post-news)
 259 (define-key gnus-summary-send-map "om" 'gnus-summary-mail-forward)
 260 (define-key gnus-summary-send-map "op" 'gnus-summary-post-forward)
 261 (define-key gnus-summary-send-map "Om" 'gnus-uu-digest-mail-forward)
 262 (define-key gnus-summary-send-map "Op" 'gnus-uu-digest-post-forward)
 263
 264 ;;; Internal functions.
 265
 266 (defun gnus-number-base36 (num len)
 267   (if (if (< len 0) (<= num 0) (= len 0))
 268       ""
 269     (concat (gnus-number-base36 (/ num 36) (1- len))
 270             (char-to-string (aref "zyxwvutsrqponmlkjihgfedcba9876543210"
 271                                   (% num 36))))))
 272
 273 ;;; Post news commands of Gnus group mode and summary mode
 274
 275 (defun gnus-group-mail ()
 276   "Start composing a mail."
 277   (interactive)
 278   (funcall gnus-mail-other-window-method))
 279
 280 (defun gnus-group-post-news ()
 281   "Post an article."
 282   (interactive)
 283   (let ((gnus-newsgroup-name nil))
 284     (gnus-post-news 'post nil nil gnus-article-buffer)))
 285
 286 (defun gnus-summary-post-news ()
 287   "Post an article."
 288   (interactive)
 289   (gnus-set-global-variables)
 290   (gnus-post-news 'post gnus-newsgroup-name))
 291
 292 (defun gnus-summary-followup (yank &optional yank-articles)
 293   "Compose a followup to an article.
 294 If prefix argument YANK is non-nil, original article is yanked automatically."
 295   (interactive "P")
 296   (gnus-set-global-variables)
 297   (if yank-articles (gnus-summary-goto-subject (car yank-articles)))
 298   (save-window-excursion
 299     (gnus-summary-select-article))
 300   (let ((headers (gnus-get-header-by-number (gnus-summary-article-number)))
 301         (gnus-newsgroup-name gnus-newsgroup-name))
 302     ;; Check Followup-To: poster.
 303     (set-buffer gnus-article-buffer)
 304     (if (and gnus-use-followup-to
 305              (string-equal "poster" (gnus-fetch-field "followup-to"))
 306              (or (not (memq gnus-use-followup-to '(t ask)))
 307                  (not (gnus-y-or-n-p
 308                        "Do you want to ignore `Followup-To: poster'? "))))
 309         ;; Mail to the poster.
 310         (gnus-summary-reply yank)
 311       (gnus-post-news nil gnus-newsgroup-name
 312                       headers gnus-article-buffer
 313                       (or yank-articles (not (not yank)))))))
 314
 315 (defun gnus-summary-followup-with-original (n)
 316   "Compose a followup to an article and include the original article."
 317   (interactive "P")
 318   (gnus-summary-followup t (gnus-summary-work-articles n)))
 319
 320 ;; Suggested by Daniel Quinlan <quinlan@best.com>.
 321 (defun gnus-summary-followup-and-reply (yank &optional yank-articles)
 322   "Compose a followup and do an auto mail to author."
 323   (interactive "P")
 324   (gnus-set-global-variables)
 325   (let ((gnus-auto-mail-to-author t))
 326     (gnus-summary-followup yank yank-articles)))
 327
 328 (defun gnus-summary-followup-and-reply-with-original (n)
 329   "Compose a followup, include the original, and do an auto mail to author."
 330   (interactive "P")
 331   (gnus-summary-followup-and-reply t (gnus-summary-work-articles n)))
 332
 333 (defun gnus-summary-cancel-article (n)
 334   "Cancel an article you posted."
 335   (interactive "P")
 336   (gnus-set-global-variables)
 337   (let ((articles (gnus-summary-work-articles n)))
 338     (while articles
 339       (gnus-summary-select-article t nil nil (car articles))
 340       (and (gnus-eval-in-buffer-window gnus-article-buffer (gnus-cancel-news))
 341            (gnus-summary-mark-as-read (car articles) gnus-canceled-mark))
 342       (gnus-summary-remove-process-mark (car articles))
 343       (gnus-article-hide-headers-if-wanted)
 344       (setq articles (cdr articles)))))
 345
 346 (defun gnus-summary-supersede-article ()
 347   "Compose an article that will supersede a previous article.
 348 This is done simply by taking the old article and adding a Supersedes
 349 header line with the old Message-ID."
 350   (interactive)
 351   (gnus-set-global-variables)
 352   (gnus-summary-select-article t)
 353   (if (not
 354        (string-equal
 355         (downcase (mail-strip-quoted-names
 356                    (mail-header-from gnus-current-headers)))
 357         (downcase (mail-strip-quoted-names (gnus-inews-user-name)))))
 358       (error "This article is not yours."))
 359   (save-excursion
 360     (set-buffer gnus-article-buffer)
 361     (let ((buffer-read-only nil))
 362       (goto-char (point-min))
 363       (search-forward "\n\n" nil t)
 364       (if (not (re-search-backward "^Message-ID: " nil t))
 365           (error "No Message-ID in this article"))))
 366   (if (gnus-post-news 'post gnus-newsgroup-name)
 367       (progn
 368         (erase-buffer)
 369         (insert-buffer gnus-article-buffer)
 370         (if (search-forward "\n\n" nil t)
 371             (forward-char -1)
 372           (goto-char (point-max)))
 373         (narrow-to-region (point-min) (point))
 374         (goto-char (point-min))
 375         (and gnus-delete-supersedes-headers
 376              (delete-matching-lines gnus-delete-supersedes-headers))
 377         (goto-char (point-min))
 378         (if (not (re-search-forward "^Message-ID: " nil t))
 379             (error "No Message-ID in this article")
 380           (replace-match "Supersedes: " t t))
 381         (goto-char (point-max))
 382         (insert mail-header-separator)
 383         (widen)
 384         (forward-line 1))))
 385
 386 \f
 387 ;;;###autoload
 388 (defalias 'sendnews 'gnus-post-news)
 389
 390 ;;;###autoload
 391 (defalias 'postnews 'gnus-post-news)
 392
 393 (defun gnus-copy-article-buffer (&optional article-buffer)
 394   ;; make a copy of the article buffer with all text properties removed
 395   ;; this copy is in the buffer gnus-article-copy.
 396   ;; if ARTICLE-BUFFER is nil, gnus-article-buffer is used
 397   ;; this buffer should be passed to all mail/news reply/post routines.
 398   (setq gnus-article-copy (get-buffer-create " *gnus article copy*"))
 399   (buffer-disable-undo gnus-article-copy)
 400   (or (memq gnus-article-copy gnus-buffer-list)
 401       (setq gnus-buffer-list (cons gnus-article-copy gnus-buffer-list)))
 402   (let ((article-buffer (or article-buffer gnus-article-buffer)))
 403     (if (and (get-buffer article-buffer)
 404              (buffer-name (get-buffer article-buffer)))
 405         (save-excursion
 406           (set-buffer article-buffer)
 407           (widen)
 408           (copy-to-buffer gnus-article-copy (point-min) (point-max))
 409           (set-text-properties (point-min) (point-max)
 410                                nil gnus-article-copy)))))
 411
 412 (defun gnus-post-news (post &optional group header article-buffer yank subject)
 413   "Begin editing a new USENET news article to be posted.
 414 Type \\[describe-mode] in the buffer to get a list of commands."
 415   (interactive (list t))
 416   (gnus-copy-article-buffer article-buffer)
 417   (if (or (not gnus-novice-user)
 418           gnus-expert-user
 419           (not (eq 'post
 420                    (nth 1 (assoc
 421                            (format "%s" (car (gnus-find-method-for-group
 422                                               gnus-newsgroup-name)))
 423                            gnus-valid-select-methods))))
 424           (and group
 425                (assq 'to-address
 426                      (nth 5 (nth 2 (gnus-gethash group gnus-newsrc-hashtb)))))
 427           (gnus-y-or-n-p "Are you sure you want to post to all of USENET? "))
 428       (let ((sumart (if (not post)
 429                         (save-excursion
 430                           (set-buffer gnus-summary-buffer)
 431                           (cons (current-buffer) gnus-current-article))))
 432             (from (and header (mail-header-from header)))
 433             (winconf (current-window-configuration))
 434             real-group)
 435         (and gnus-interactive-post
 436              (not gnus-expert-user)
 437              post (not group)
 438              (progn
 439                (setq gnus-newsgroup-name
 440                      (setq group
 441                            (completing-read "Group: " gnus-active-hashtb)))
 442                (or subject
 443                    (setq subject (read-string "Subject: ")))))
 444         (setq mail-reply-buffer gnus-article-copy)
 445
 446         (let ((newsgroup-name (or group gnus-newsgroup-name "")))
 447           (setq real-group (and group (gnus-group-real-name group)))
 448           (setq gnus-post-news-buffer
 449                 (gnus-request-post-buffer
 450                  post real-group subject header gnus-article-copy
 451                  (nth 2 (and group (gnus-gethash group gnus-newsrc-hashtb)))
 452                  (or (cdr (assq 'to-group
 453                                 (nth 5 (nth 2 (gnus-gethash
 454                                                newsgroup-name
 455                                                gnus-newsrc-hashtb)))))
 456                      (if (and (boundp 'gnus-followup-to-function)
 457                               gnus-followup-to-function
 458                               gnus-article-copy)
 459                          (save-excursion
 460                            (set-buffer gnus-article-copy)
 461                            (funcall gnus-followup-to-function group))))
 462                  gnus-use-followup-to))
 463           (if post
 464               (gnus-configure-windows 'post 'force)
 465             (if yank
 466                 (gnus-configure-windows 'followup-yank 'force)
 467               (gnus-configure-windows 'followup 'force)))
 468           (gnus-overload-functions)
 469           (make-local-variable 'gnus-article-reply)
 470           (make-local-variable 'gnus-article-check-size)
 471           (make-local-variable 'gnus-reply-subject)
 472           (setq gnus-reply-subject (and header (mail-header-subject header)))
 473           (setq gnus-article-reply sumart)
 474           ;; Handle `gnus-auto-mail-to-author'.
 475           ;; Suggested by Daniel Quinlan <quinlan@best.com>.
 476           ;; Revised to respect Reply-To by Ulrik Dickow <dickow@nbi.dk>.
 477           (let ((to (and (not post)
 478                          (if (if (eq gnus-auto-mail-to-author 'ask)
 479                                  (y-or-n-p "Also send mail to author? ")
 480                                gnus-auto-mail-to-author)
 481                              (or (save-excursion
 482                                    (set-buffer gnus-article-copy)
 483                                    (gnus-fetch-field "reply-to"))
 484                                  from)))))
 485             (if to
 486                 (if (mail-fetch-field "To")
 487                     (progn
 488                       (beginning-of-line)
 489                       (insert "Cc: " to "\n"))
 490                   (mail-position-on-field "To")
 491                   (insert to))))
 492           ;; Handle author copy using BCC field.
 493           (if (and gnus-mail-self-blind
 494                    (not (mail-fetch-field "bcc")))
 495               (progn
 496                 (mail-position-on-field "Bcc")
 497                 (insert (if (stringp gnus-mail-self-blind)
 498                             gnus-mail-self-blind
 499                           (user-login-name)))))
 500           ;; Handle author copy using FCC field.
 501           (if gnus-author-copy
 502               (progn
 503                 (mail-position-on-field "Fcc")
 504                 (insert gnus-author-copy)))
 505           (goto-char (point-min))
 506           (if post
 507               (cond ((not group)
 508                      (re-search-forward "^Newsgroup:" nil t)
 509                      (end-of-line))
 510                     ((not subject)
 511                      (re-search-forward "^Subject:" nil t)
 512                      (end-of-line))
 513                     (t
 514                      (re-search-forward
 515                       (concat "^" (regexp-quote mail-header-separator) "$"))
 516                      (forward-line 1)))
 517             (re-search-forward
 518              (concat "^" (regexp-quote mail-header-separator) "$"))
 519             (forward-line 1)
 520             (if (not yank)
 521                 ()
 522               (save-excursion
 523                 (if (not (listp yank))
 524                     (news-reply-yank-original nil)
 525                   (setq yank (reverse yank))
 526                   (while yank
 527                     (save-excursion
 528                       (save-window-excursion
 529                         (set-buffer gnus-summary-buffer)
 530                         (gnus-summary-select-article nil nil nil (car yank))
 531                         (gnus-summary-remove-process-mark (car yank)))
 532                       (let ((mail-reply-buffer gnus-article-copy))
 533                         (gnus-copy-article-buffer)
 534                         (let ((news-reply-yank-message-id
 535                                (save-excursion
 536                                  (set-buffer gnus-article-copy)
 537                                  (mail-fetch-field "message-id")))
 538                               (news-reply-yank-from
 539                                (save-excursion
 540                                  (set-buffer gnus-article-copy)
 541                                  (mail-fetch-field "from"))))
 542                           (news-reply-yank-original nil))
 543                         (setq yank (cdr yank)))))))))
 544           (if gnus-post-prepare-function
 545               (funcall gnus-post-prepare-function group))
 546           (run-hooks 'gnus-post-prepare-hook)
 547           (make-local-variable 'gnus-prev-winconf)
 548           (setq gnus-prev-winconf winconf))))
 549   (setq gnus-article-check-size (cons (buffer-size) (gnus-article-checksum)))
 550   (message "")
 551   t)
 552
 553 (defun gnus-inews-news (&optional use-group-method)
 554   "Send a news message.
 555 If given a prefix, and the group is a foreign group, this function
 556 will attempt to use the foreign server to post the article."
 557   (interactive "P")
 558   (or gnus-current-select-method
 559       (setq gnus-current-select-method gnus-select-method))
 560   (let* ((case-fold-search nil)
 561          (server-running (gnus-server-opened gnus-current-select-method))
 562          (reply gnus-article-reply)
 563          error post-result)
 564     (save-excursion
 565       ;; Connect to default NNTP server if necessary.
 566       ;; Suggested by yuki@flab.fujitsu.junet.
 567       (gnus-start-news-server)          ;Use default server.
 568       ;; NNTP server must be opened before current buffer is modified.
 569       (widen)
 570       (goto-char (point-min))
 571       (run-hooks 'news-inews-hook)
 572       (save-restriction
 573         (narrow-to-region
 574          (point-min)
 575          (progn
 576            (goto-char (point-min))
 577            (re-search-forward
 578             (concat "^" (regexp-quote mail-header-separator) "$"))
 579            (match-beginning 0)))
 580
 581         ;; Correct newsgroups field: change sequence of spaces to comma and
 582         ;; eliminate spaces around commas.  Eliminate imbedded line breaks.
 583         (goto-char (point-min))
 584         (if (re-search-forward "^Newsgroups: +" nil t)
 585             (save-restriction
 586               (narrow-to-region
 587                (point)
 588                (if (re-search-forward "^[^ \t]" nil t)
 589                    (match-beginning 0)
 590                  (forward-line 1)
 591                  (point)))
 592               (goto-char (point-min))
 593               (while (re-search-forward "\n[ \t]+" nil t)
 594                 (replace-match " " t t)) ;No line breaks (too confusing)
 595               (goto-char (point-min))
 596               (while (re-search-forward "[ \t\n]*,[ \t\n]*\\|[ \t]+" nil t)
 597                 (replace-match "," t t))
 598               (goto-char (point-min))
 599               ;; Remove a trailing comma.
 600               (if (re-search-forward ",$" nil t)
 601                   (replace-match "" t t))))
 602
 603         ;; Added by Per Abrahamsen <abraham@iesd.auc.dk>.
 604         ;; Help save the the world!
 605         (or
 606          gnus-expert-user
 607          (let ((newsgroups (mail-fetch-field "newsgroups"))
 608                (followup-to (mail-fetch-field "followup-to"))
 609                groups to)
 610            (if (and newsgroups
 611                     (string-match "," newsgroups) (not followup-to))
 612                (progn
 613                  (while (string-match "," newsgroups)
 614                    (setq groups
 615                          (cons (list (substring newsgroups
 616                                                 0 (match-beginning 0)))
 617                                groups))
 618                    (setq newsgroups (substring newsgroups (match-end 0))))
 619                  (setq groups (nreverse (cons (list newsgroups) groups)))
 620
 621                  (setq to
 622                        (completing-read "Followups to: (default all groups) "
 623                                         groups))
 624                  (if (> (length to) 0)
 625                      (progn
 626                        (goto-char (point-min))
 627                        (insert "Followup-To: " to "\n")))))))
 628
 629         ;; Cleanup Followup-To.
 630         (goto-char (point-min))
 631         (if (search-forward-regexp "^Followup-To: +" nil t)
 632             (save-restriction
 633               (narrow-to-region
 634                (point)
 635                (if (re-search-forward "^[^ \t]" nil 'end)
 636                    (match-beginning 0)
 637                  (point-max)))
 638               (goto-char (point-min))
 639               (replace-regexp "\n[ \t]+" " ") ;No line breaks (too confusing)
 640               (goto-char (point-min))
 641               (replace-regexp "[ \t\n]*,[ \t\n]*\\|[ \t]+" ",")))
 642
 643         ;; Mail the message too if To:, Bcc:. or Cc: exists.
 644         (let* ((types '("to" "bcc" "cc"))
 645                (ty types)
 646                fcc-line)
 647           (while ty
 648             (or (mail-fetch-field (car ty) nil t)
 649                 (setq types (delete (car ty) types)))
 650             (setq ty (cdr ty)))
 651
 652           (if (not types)
 653               ;; We do not want to send mail.
 654               ()
 655             (if (not gnus-mail-send-method)
 656                 (progn
 657                   (ding)
 658                   (gnus-message
 659                    1 "No mailer defined.  To: and/or Cc: fields ignored.")
 660                   (sit-for 1))
 661               (save-excursion
 662                 ;; We want to remove Fcc, because we want to handle
 663                 ;; that one ourselves...
 664
 665                 (goto-char (point-min))
 666                 (if (re-search-forward "^Fcc: " nil t)
 667                     (progn
 668                       (setq fcc-line
 669                             (buffer-substring
 670                              (progn (beginning-of-line) (point))
 671                              (progn (forward-line 1) (point))))
 672                       (forward-line -1)
 673                       (gnus-delete-line)))
 674
 675                 ;; We generate a Message-ID so that the mail and the
 676                 ;; news copy of the message both get the same ID.
 677                 (or (mail-fetch-field "message-id")
 678                     (not (memq 'Message-ID gnus-required-headers))
 679                     (progn
 680                       (goto-char (point-max))
 681                       (insert "Message-ID: " (gnus-inews-message-id) "\n")))
 682
 683                 (save-restriction
 684                   (widen)
 685                   (gnus-message 5 "Sending via mail...")
 686
 687                   (if (and gnus-mail-courtesy-message
 688                            (or (member "to" types)
 689                                (member "cc" types)))
 690                       ;; We only want to insert the courtesy mail
 691                       ;; message if we use to or cc; bcc should not
 692                       ;; have one. Well, if both bcc and to are
 693                       ;; present, it will get one anyway.
 694                       (progn
 695                         ;; Insert "courtesy" mail message.
 696                         (goto-char (point-min))
 697                         (re-search-forward
 698                          (concat "^" (regexp-quote
 699                                       mail-header-separator) "$"))
 700                         (forward-line 1)
 701                         (insert gnus-mail-courtesy-message)
 702                         (funcall gnus-mail-send-method)
 703                         (goto-char (point-min))
 704                         (search-forward gnus-mail-courtesy-message)
 705                         (replace-match "" t t))
 706                     (funcall gnus-mail-send-method))
 707
 708                   (gnus-message 5 "Sending via mail...done")
 709
 710                   (goto-char (point-min))
 711                   (narrow-to-region
 712                    (point)
 713                    (re-search-forward
 714                     (concat "^" (regexp-quote mail-header-separator) "$")))
 715                   (goto-char (point-min))
 716                   (while (re-search-forward "^BCC:" nil t)
 717                     (delete-region (match-beginning 0)
 718                                    ;; There might be continuation headers.
 719                                    (if (re-search-forward "^[^ \t]" nil t)
 720                                        (match-beginning 0)
 721                                      ;; Uhm... or something like this.
 722                                      (forward-line 1)
 723                                      (point)))))
 724                 (if fcc-line
 725                     (progn
 726                       (goto-char (point-max))
 727                       (insert fcc-line))))))))
 728
 729       ;; Send to server.
 730       (gnus-message 5 "Posting to USENET...")
 731       (setq post-result (funcall gnus-inews-article-function use-group-method))
 732       (cond ((eq post-result 'illegal)
 733              (setq error t)
 734              (ding))
 735             (post-result
 736              (gnus-message 5 "Posting to USENET...done")
 737              (if (gnus-buffer-exists-p (car-safe reply))
 738                  (progn
 739                    (save-excursion
 740                      (set-buffer gnus-summary-buffer)
 741                      (gnus-summary-mark-article-as-replied
 742                       (cdr reply)))))
 743              (set-buffer-modified-p nil))
 744             (t
 745              ;; We cannot signal an error.
 746              (setq error t)
 747              (ding)
 748              (gnus-message 1 "Article rejected: %s"
 749                            (gnus-status-message gnus-select-method)))))
 750     ;; If NNTP server is opened by gnus-inews-news, close it by myself.
 751     (or server-running
 752         (gnus-close-server (gnus-find-method-for-group gnus-newsgroup-name)))
 753     (let ((conf gnus-prev-winconf))
 754       (if (not error)
 755           (progn
 756             (bury-buffer)
 757             ;; Restore last window configuration.
 758             (and conf (set-window-configuration conf)))))))
 759
 760 (defun gnus-inews-check-post ()
 761   "Check whether the post looks ok."
 762   (or
 763    (not gnus-check-before-posting)
 764    (and
 765     ;; We narrow to the headers and check them first.
 766     (save-excursion
 767       (save-restriction
 768         (goto-char (point-min))
 769         (narrow-to-region
 770          (point)
 771          (progn
 772            (re-search-forward
 773             (concat "^" (regexp-quote mail-header-separator) "$"))
 774            (match-beginning 0)))
 775         (goto-char (point-min))
 776         (and
 777          ;; Check for commands in Subject.
 778          (or
 779           (gnus-check-before-posting 'subject-cmsg)
 780           (save-excursion
 781             (if (string-match "^cmsg " (mail-fetch-field "subject"))
 782                 (gnus-y-or-n-p
 783                  "The control code \"cmsg \" is in the subject. Really post? ")
 784               t)))
 785          ;; Check for multiple identical headers.
 786          (or (gnus-check-before-posting 'multiple-headers)
 787              (save-excursion
 788                (let (found)
 789                  (while (and (not found) (re-search-forward "^[^ \t:]+: "
 790                                                             nil t))
 791                    (save-excursion
 792                      (or (re-search-forward
 793                           (concat "^" (setq found
 794                                             (buffer-substring
 795                                              (match-beginning 0)
 796                                              (- (match-end 0) 2))))
 797                           nil t)
 798                          (setq found nil))))
 799                  (if found
 800                      (gnus-y-or-n-p
 801                       (format "Multiple %s headers. Really post? " found))
 802                    t))))
 803          ;; Check for version and sendsys.
 804          (or (gnus-check-before-posting 'sendsys)
 805              (save-excursion
 806                (if (re-search-forward "^Sendsys:\\|^Version:" nil t)
 807                    (gnus-y-or-n-p
 808                     (format "The article contains a %s command. Really post? "
 809                             (buffer-substring (match-beginning 0)
 810                                               (1- (match-end 0)))))
 811                  t)))
 812          ;; Check the Message-Id header.
 813          (or (gnus-check-before-posting 'message-id)
 814              (save-excursion
 815                (let* ((case-fold-search t)
 816                       (message-id (mail-fetch-field "message-id")))
 817                  (or (not message-id)
 818                      (and (string-match "@" message-id)
 819                           (string-match "@[^\\.]*\\." message-id))
 820                      (gnus-y-or-n-p
 821                       (format
 822                        "The Message-ID looks strange: \"%s\". Really post? "
 823                        message-id))))))
 824          ;; Check the From header.
 825          (or (gnus-check-before-posting 'from)
 826              (save-excursion
 827                (let* ((case-fold-search t)
 828                       (from (mail-fetch-field "from")))
 829                  (cond
 830                   ((not from)
 831                    (gnus-y-or-n-p "There is no From line. Really post? "))
 832                   ((not (string-match "@[^\\.]*\\." from))
 833                    (gnus-y-or-n-p
 834                     (format
 835                      "The address looks strange: \"%s\". Really post? " from)))
 836                   ((string-match "(.*).*(.*)" from)
 837                    (gnus-y-or-n-p
 838                     (format
 839                      "The From header looks strange: \"%s\". Really post? "
 840                      from)))
 841                   (t t)))))
 842          )))
 843     ;; Check for long lines.
 844     (or (gnus-check-before-posting 'long-lines)
 845         (save-excursion
 846           (goto-char (point-min))
 847           (re-search-forward
 848            (concat "^" (regexp-quote mail-header-separator) "$"))
 849           (while (and
 850                   (progn
 851                     (end-of-line)
 852                     (< (current-column) 80))
 853                   (zerop (forward-line 1))))
 854           (or (bolp)
 855               (eobp)
 856               (gnus-y-or-n-p
 857                (format
 858                 "You have lines longer than 79 characters.  Really post? ")))))
 859     ;; Check for control characters.
 860     (or (gnus-check-before-posting 'control-chars)
 861         (save-excursion
 862           (if (re-search-forward "[\000-\007\013\015-\037\200-\237]" nil t)
 863               (gnus-y-or-n-p
 864                "The article contains control characters. Really post? ")
 865             t)))
 866     ;; Check excessive size.
 867     (or (gnus-check-before-posting 'size)
 868         (if (> (buffer-size) 60000)
 869             (gnus-y-or-n-p
 870              (format "The article is %d octets long. Really post? "
 871                      (buffer-size)))
 872           t))
 873     ;; Use the (size . checksum) variable to see whether the
 874     ;; article is empty or has only quoted text.
 875     (or
 876      (gnus-check-before-posting 'new-text)
 877      (if (and (= (buffer-size) (car gnus-article-check-size))
 878               (= (gnus-article-checksum) (cdr gnus-article-check-size)))
 879          (gnus-y-or-n-p
 880           "It looks like there's no new text in your article. Really post? ")
 881        t))
 882     ;; Check the length of the signature.
 883     (or (gnus-check-before-posting 'signature)
 884         (progn
 885           (goto-char (point-max))
 886           (if (not (re-search-backward gnus-signature-separator nil t))
 887               t
 888             (if (> (count-lines (point) (point-max)) 5)
 889                 (gnus-y-or-n-p
 890                  (format
 891                   "Your .sig is %d lines; it should be max 4.  Really post? "
 892                   (count-lines (point) (point-max))))
 893               t)))))))
 894
 895 (defun gnus-article-checksum ()
 896   (let ((sum 0))
 897     (save-excursion
 898       (while (not (eobp))
 899         (setq sum (logxor sum (following-char)))
 900         (forward-char 1)))
 901     sum))
 902
 903 ;; Returns non-nil if this type is not to be checked.
 904 (defun gnus-check-before-posting (type)
 905   (not
 906    (or (not gnus-check-before-posting)
 907        (if (listp gnus-check-before-posting)
 908            (memq type gnus-check-before-posting)
 909          t))))
 910
 911 (defun gnus-cancel-news ()
 912   "Cancel an article you posted."
 913   (interactive)
 914   (if (or gnus-expert-user
 915           (gnus-yes-or-no-p "Do you really want to cancel this article? "))
 916       (let ((from nil)
 917             (newsgroups nil)
 918             (message-id nil)
 919             (distribution nil))
 920         (or (gnus-member-of-valid 'post gnus-newsgroup-name)
 921             (error "This backend does not support canceling"))
 922         (save-excursion
 923           ;; Get header info. from original article.
 924           (save-restriction
 925             (gnus-article-show-all-headers)
 926             (goto-char (point-min))
 927             (search-forward "\n\n" nil 'move)
 928             (narrow-to-region (point-min) (point))
 929             (setq from (mail-fetch-field "from"))
 930             (setq newsgroups (mail-fetch-field "newsgroups"))
 931             (setq message-id (mail-fetch-field "message-id"))
 932             (setq distribution (mail-fetch-field "distribution")))
 933           ;; Verify if the article is absolutely user's by comparing
 934           ;; user id with value of its From: field.
 935           (if (not
 936                (string-equal
 937                 (downcase (mail-strip-quoted-names from))
 938                 (downcase (mail-strip-quoted-names (gnus-inews-user-name)))))
 939               (progn
 940                 (ding) (gnus-message 3 "This article is not yours.")
 941                 nil)
 942             ;; Make control article.
 943             (set-buffer (get-buffer-create " *Gnus-canceling*"))
 944             (buffer-disable-undo (current-buffer))
 945             (erase-buffer)
 946             (insert "Newsgroups: " newsgroups "\n"
 947                     "Subject: cancel " message-id "\n"
 948                     "Control: cancel " message-id "\n"
 949                     (if distribution
 950                         (concat "Distribution: " distribution "\n")
 951                       "")
 952                     mail-header-separator "\n"
 953                     "This is a cancel message from " from ".\n")
 954             ;; Send the control article to NNTP server.
 955             (gnus-message 5 "Canceling your article...")
 956             (prog1
 957                 (if (funcall gnus-inews-article-function)
 958                     (gnus-message 5 "Canceling your article...done")
 959                   (progn
 960                     (ding)
 961                     (gnus-message 1 "Cancel failed; %s"
 962                                   (gnus-status-message gnus-newsgroup-name))
 963                     nil)
 964                   t)
 965               ;; Kill the article buffer.
 966               (kill-buffer (current-buffer))))))))
 967
 968 \f
 969 ;;; Lowlevel inews interface
 970
 971 (defun gnus-inews-article (&optional use-group-method)
 972   "Post an article in current buffer using NNTP protocol."
 973   (let ((artbuf (current-buffer))
 974         (tmpbuf (get-buffer-create " *Gnus-posting*")))
 975     (widen)
 976     (goto-char (point-max))
 977     ;; require a newline at the end for inews to append .signature to
 978     (or (= (preceding-char) ?\n)
 979         (insert ?\n))
 980     ;; Prepare article headers.  All message body such as signature
 981     ;; must be inserted before Lines: field is prepared.
 982     (save-restriction
 983       (goto-char (point-min))
 984       (narrow-to-region
 985        (point-min)
 986        (save-excursion
 987          (re-search-forward
 988           (concat "^" (regexp-quote mail-header-separator) "$"))
 989          (match-beginning 0)))
 990       (gnus-inews-remove-headers)
 991       (gnus-inews-insert-headers)
 992       (run-hooks 'gnus-inews-article-header-hook)
 993       (widen))
 994     ;; Check whether the article is a good Net Citizen.
 995     (if (and gnus-article-check-size
 996              (not (gnus-inews-check-post)))
 997         ;; Aber nein!
 998         'illegal
 999       ;; Looks ok, so we do the nasty.
1000       (save-excursion
1001         (set-buffer tmpbuf)
1002         (buffer-disable-undo (current-buffer))
1003         (erase-buffer)
1004         (insert-buffer-substring artbuf)
1005         ;; Remove the header separator.
1006         (goto-char (point-min))
1007         (re-search-forward
1008          (concat "^" (regexp-quote mail-header-separator) "$"))
1009         (replace-match "" t t)
1010         ;; This hook may insert a signature.
1011         (save-excursion
1012           (goto-char (point-min))
1013           (let ((gnus-newsgroup-name (or (mail-fetch-field "newsgroups")
1014                                          gnus-newsgroup-name)))
1015             (run-hooks 'gnus-prepare-article-hook)))
1016         ;; Run final inews hooks.  This hook may do FCC.
1017         ;; The article must be saved before being posted because
1018         ;; `gnus-request-post' modifies the buffer.
1019         (run-hooks 'gnus-inews-article-hook)
1020         ;; Post an article to NNTP server.
1021         ;; Return NIL if post failed.
1022         (prog1
1023             (gnus-request-post
1024              (if use-group-method
1025                  (gnus-find-method-for-group gnus-newsgroup-name)
1026                gnus-select-method) use-group-method)
1027           (kill-buffer (current-buffer)))))))
1028
1029 (defun gnus-inews-remove-headers ()
1030   (let ((case-fold-search t)
1031         (headers gnus-removable-headers))
1032     ;; Remove toxic headers.
1033     (while headers
1034       (goto-char (point-min))
1035       (and (re-search-forward
1036             (concat "^" (downcase (format "%s" (car headers))))
1037             nil t)
1038            (delete-region (progn (beginning-of-line) (point))
1039                           (progn (forward-line 1) (point))))
1040       (setq headers (cdr headers)))))
1041
1042 (defun gnus-inews-insert-headers ()
1043   "Prepare article headers.
1044 Headers already prepared in the buffer are not modified.
1045 Headers in `gnus-required-headers' will be generated."
1046   (let ((Date (gnus-inews-date))
1047         (Message-ID (gnus-inews-message-id))
1048         (Organization (gnus-inews-organization))
1049         (From (gnus-inews-user-name))
1050         (Path (gnus-inews-path))
1051         (Subject nil)
1052         (Newsgroups nil)
1053         (Distribution nil)
1054         (Lines (gnus-inews-lines))
1055         (X-Newsreader gnus-version)
1056         (headers gnus-required-headers)
1057         (case-fold-search t)
1058         header value elem)
1059     ;; First we remove any old generated headers.
1060     (let ((headers gnus-deletable-headers))
1061       (while headers
1062         (goto-char (point-min))
1063         (and (re-search-forward
1064               (concat "^" (symbol-name (car headers)) ": *") nil t)
1065              (get-text-property (1+ (match-beginning 0)) 'gnus-deletable)
1066              (gnus-delete-line))
1067         (setq headers (cdr headers))))
1068     ;; If there are References, and no "Re: ", then the thread has
1069     ;; changed name. See Son-of-1036.
1070     (if (and (mail-fetch-field "references")
1071              (get-buffer gnus-article-buffer))
1072         (let ((psubject (gnus-simplify-subject-re
1073                          (mail-fetch-field "subject"))))
1074           (or (and psubject gnus-reply-subject
1075                    (string= (gnus-simplify-subject-re gnus-reply-subject)
1076                             psubject))
1077               (progn
1078                 (string-match "@" Message-ID)
1079                 (setq Message-ID
1080                       (concat (substring Message-ID 0 (match-beginning 0))
1081                               "_-_"
1082                               (substring Message-ID (match-beginning 0))))))))
1083     ;; Go through all the required headers and see if they are in the
1084     ;; articles already. If they are not, or are empty, they are
1085     ;; inserted automatically - except for Subject, Newsgroups and
1086     ;; Distribution.
1087     (while headers
1088       (goto-char (point-min))
1089       (setq elem (car headers))
1090       (if (consp elem)
1091           (setq header (car elem))
1092         (setq header elem))
1093       (if (or (not (re-search-forward
1094                     (concat "^" (downcase (symbol-name header)) ":") nil t))
1095               (progn
1096                 ;; The header was found. We insert a space after the
1097                 ;; colon, if there is none.
1098                 (if (/= (following-char) ? ) (insert " "))
1099                 ;; Find out whether the header is empty...
1100                 (looking-at "[ \t]*$")))
1101           ;; So we find out what value we should insert.
1102           (progn
1103             (setq value
1104                   (or (if (consp elem)
1105                           ;; The element is a cons.  Either the cdr is
1106                           ;; a string to be inserted verbatim, or it
1107                           ;; is a function, and we insert the value
1108                           ;; returned from this function.
1109                           (or (and (stringp (cdr elem)) (cdr elem))
1110                               (and (fboundp (cdr elem)) (funcall (cdr elem))))
1111                         ;; The element is a symbol.  We insert the
1112                         ;; value of this symbol, if any.
1113                         (and (boundp header) (symbol-value header)))
1114                       ;; We couldn't generate a value for this header,
1115                       ;; so we just ask the user.
1116                       (read-from-minibuffer
1117                        (format "Empty header for %s; enter value: " header))))
1118             ;; Finally insert the header.
1119             (save-excursion
1120               (if (bolp)
1121                   (progn
1122                     (goto-char (point-max))
1123                     (insert (symbol-name header) ": " value "\n")
1124                     (forward-line -1))
1125                 (replace-match value t t))
1126               ;; Add the deletable property to the headers that require it.
1127               (and (memq header gnus-deletable-headers)
1128                    (progn (beginning-of-line) (looking-at "[^:]+: "))
1129                    (add-text-properties
1130                     (point) (match-end 0)
1131                     '(gnus-deletable t face italic) (current-buffer))))))
1132       (setq headers (cdr headers)))
1133     ;; Insert new Sender if the From is strange.
1134     (let ((from (mail-fetch-field "from"))
1135           (sender (mail-fetch-field "sender")))
1136       (if (and from
1137                (not (string=
1138                      (downcase (car (gnus-extract-address-components from)))
1139                      (downcase (gnus-inews-real-user-address))))
1140                (or (null sender)
1141                    (not
1142                     (string=
1143                      (downcase (car (gnus-extract-address-components sender)))
1144                      (downcase (gnus-inews-real-user-address))))))
1145           (progn
1146             (goto-char (point-min))
1147             (and (re-search-forward "^Sender:" nil t)
1148                  (progn
1149                    (beginning-of-line)
1150                    (insert "Original-")
1151                    (beginning-of-line)))
1152             (insert "Sender: " (gnus-inews-real-user-address) "\n"))))))
1153
1154
1155 (defun gnus-inews-insert-signature ()
1156   "Insert a signature file.
1157 If `gnus-signature-function' is bound and returns a string, this
1158 string is used instead of the variable `gnus-signature-file'.
1159 In either case, if the string is a file name, this file is
1160 inserted. If the string is not a file name, the string itself is
1161 inserted.
1162
1163 If you never want any signature inserted, set both of these variables to
1164 nil."
1165   (save-excursion
1166     (let ((signature
1167            (or (and gnus-signature-function
1168                     (funcall gnus-signature-function gnus-newsgroup-name))
1169                gnus-signature-file)))
1170       (if (and signature
1171                (or (file-exists-p signature)
1172                    (string-match " " signature)
1173                    (not (string-match
1174                          "^/[^/]+/" (expand-file-name signature)))))
1175           (progn
1176             (goto-char (point-max))
1177             (if (and mail-signature (search-backward "\n-- \n" nil t))
1178                 ()
1179               ;; Delete any previous signatures.
1180               (if (search-backward "\n-- \n" nil t)
1181                   (delete-region (point) (point-max)))
1182               (or (eolp) (insert "\n"))
1183               (insert "-- \n")
1184               (if (file-exists-p signature)
1185                   (insert-file-contents signature)
1186                 (insert signature))
1187               (goto-char (point-max))
1188               (or (bolp) (insert "\n"))))))))
1189
1190 ;; Written by "Mr. Per Persson" <pp@solace.mh.se>.
1191 (defun gnus-inews-insert-mime-headers ()
1192   (let ((mail-header-separator ""))
1193     (or (mail-position-on-field "Mime-Version")
1194         (insert "1.0")
1195         (cond ((save-excursion
1196                  (beginning-of-buffer)
1197                  (re-search-forward "[\200-\377]" nil t))
1198                (or (mail-position-on-field "Content-Type")
1199                    (insert "text/plain; charset=ISO-8859-1"))
1200                (or (mail-position-on-field "Content-Transfer-Encoding")
1201                    (insert "8bit")))
1202               (t (or (mail-position-on-field "Content-Type")
1203                      (insert "text/plain; charset=US-ASCII"))
1204                  (or (mail-position-on-field "Content-Transfer-Encoding")
1205                      (insert "7bit")))))))
1206
1207 (defun gnus-inews-do-fcc ()
1208   "Process FCC: fields in current article buffer.
1209 Unless the first character of the field is `|', the article is saved
1210 to the specified file using the function specified by the variable
1211 gnus-author-copy-saver.  The default function rmail-output saves in
1212 Unix mailbox format.
1213 If the first character is `|', the contents of the article is send to
1214 a program specified by the rest of the value."
1215   (let ((fcc-list nil)
1216         (fcc-file nil)
1217         (case-fold-search t))           ;Should ignore case.
1218     (save-excursion
1219       (save-restriction
1220         (goto-char (point-min))
1221         (search-forward "\n\n")
1222         (narrow-to-region (point-min) (point))
1223         (goto-char (point-min))
1224         (while (re-search-forward "^FCC:[ \t]*" nil t)
1225           (setq fcc-list
1226                 (cons (buffer-substring
1227                        (point)
1228                        (progn
1229                          (end-of-line)
1230                          (skip-chars-backward " \t")
1231                          (point)))
1232                       fcc-list))
1233           (delete-region (match-beginning 0)
1234                          (progn (forward-line 1) (point))))
1235         ;; Process FCC operations.
1236         (widen)
1237         (while fcc-list
1238           (setq fcc-file (car fcc-list))
1239           (setq fcc-list (cdr fcc-list))
1240           (cond ((string-match "^[ \t]*|[ \t]*\\(.*\\)[ \t]*$" fcc-file)
1241                  (let ((program (substring fcc-file
1242                                            (match-beginning 1) (match-end 1))))
1243                    ;; Suggested by yuki@flab.fujitsu.junet.
1244                    ;; Send article to named program.
1245                    (call-process-region (point-min) (point-max) shell-file-name
1246                                         nil nil nil "-c" program)))
1247                 (t
1248                  ;; Suggested by hyoko@flab.fujitsu.junet.
1249                  ;; Save article in Unix mail format by default.
1250                  (gnus-make-directory (file-name-directory fcc-file))
1251                  (if (and gnus-author-copy-saver
1252                           (not (eq gnus-author-copy-saver 'rmail-output)))
1253                      (funcall gnus-author-copy-saver fcc-file)
1254                    (if (and (file-readable-p fcc-file)
1255                             (mail-file-babyl-p fcc-file))
1256                        (gnus-output-to-rmail fcc-file)
1257                      (rmail-output fcc-file 1 t t))))))))))
1258
1259 (defun gnus-inews-path ()
1260   "Return uucp path."
1261   (let ((login-name (gnus-inews-login-name)))
1262     (cond ((null gnus-use-generic-path)
1263            (concat (nth 1 gnus-select-method) "!" login-name))
1264           ((stringp gnus-use-generic-path)
1265            ;; Support GENERICPATH.  Suggested by vixie@decwrl.dec.com.
1266            (concat gnus-use-generic-path "!" login-name))
1267           (t login-name))))
1268
1269 (defun gnus-inews-user-name ()
1270   "Return user's network address as \"NAME@DOMAIN (FULL-NAME)\"."
1271   (let ((full-name (gnus-inews-full-name))
1272         (address (if (or gnus-user-login-name gnus-use-generic-from
1273                          gnus-local-domain (getenv "DOMAINNAME"))
1274                      (concat (gnus-inews-login-name) "@"
1275                              (gnus-inews-domain-name gnus-use-generic-from))
1276                    user-mail-address)))
1277     (or gnus-user-from-line
1278         (concat address
1279                 ;; User's full name.
1280                 (cond ((string-equal full-name "&") ;Unix hack.
1281                        (concat " (" (user-login-name) ")"))
1282                       ((string-match "[^ ]+@[^ ]+ +(.*)" address)
1283                        "")
1284                       (t
1285                        (concat " (" full-name ")")))))))
1286
1287 (defun gnus-inews-real-user-address ()
1288   "Return the \"real\" user address.
1289 This function tries to ignore all user modifications, and
1290 give as trustworthy answer as possible."
1291   (concat (user-login-name) "@" (gnus-inews-full-address)))
1292
1293 (defun gnus-inews-login-name ()
1294   "Return login name."
1295   (or gnus-user-login-name (getenv "LOGNAME") (user-login-name)))
1296
1297 (defun gnus-inews-full-name ()
1298   "Return full user name."
1299   (or gnus-user-full-name (getenv "NAME") (user-full-name)))
1300
1301 (defun gnus-inews-domain-name (&optional genericfrom)
1302   "Return user's domain name.
1303 If optional argument GENERICFROM is a string, use it as the domain
1304 name; if it is non-nil, strip off local host name from the domain name.
1305 If the function `system-name' returns full internet name and the
1306 domain is undefined, the domain name is got from it."
1307   (if (or genericfrom gnus-local-domain (getenv "DOMAINNAME"))
1308       (let* ((system-name (system-name))
1309              (domain
1310               (or (if (stringp genericfrom) genericfrom)
1311                   (getenv "DOMAINNAME")
1312                   gnus-local-domain
1313                   ;; Function `system-name' may return full internet name.
1314                   ;; Suggested by Mike DeCorte <mrd@sun.soe.clarkson.edu>.
1315                   (if (string-match "\\." system-name)
1316                       (substring system-name (match-end 0)))
1317                   (read-string "Domain name (no host): ")))
1318              (host (or (if (string-match "\\." system-name)
1319                            (substring system-name 0 (match-beginning 0)))
1320                        system-name)))
1321         (if (string-equal "." (substring domain 0 1))
1322             (setq domain (substring domain 1)))
1323         ;; Support GENERICFROM as same as standard Bnews system.
1324         ;; Suggested by ohm@kaba.junet and vixie@decwrl.dec.com.
1325         (cond ((null genericfrom)
1326                (concat host "." domain))
1327               ;;((stringp genericfrom) genericfrom)
1328               (t domain)))
1329     (if (string-match "\\." (system-name))
1330         (system-name)
1331       (substring user-mail-address
1332                  (1+ (string-match "@" user-mail-address))))))
1333
1334 (defun gnus-inews-full-address ()
1335   (let ((domain (gnus-inews-domain-name))
1336         (system (system-name))
1337         (case-fold-search t))
1338     (if (string-match "\\." system) system
1339       (if (string-match (concat "^" (regexp-quote system)) domain) domain
1340         (concat system "." domain)))))
1341
1342 (defun gnus-inews-message-id ()
1343   "Generate unique Message-ID for user."
1344   ;; Message-ID should not contain a slash and should be terminated by
1345   ;; a number.  I don't know the reason why it is so.
1346   (concat "<" (gnus-inews-unique-id) "@" (gnus-inews-full-address) ">"))
1347
1348 (defvar gnus-unique-id-char nil)
1349
1350 ;; If you ever change this function, make sure the new version
1351 ;; cannot generate IDs that the old version could.
1352 ;; You might for example insert a "." somewhere (not next to another dot
1353 ;; or string boundary), or modify the newsreader name to "Ding".
1354 (defun gnus-inews-unique-id ()
1355   ;; Dont use microseconds from (current-time), they may be unsupported.
1356   ;; Instead we use this randomly inited counter.
1357   (setq gnus-unique-id-char
1358         (% (1+ (or gnus-unique-id-char (logand (random t) (1- (lsh 1 20)))))
1359            ;; (current-time) returns 16-bit ints,
1360            ;; and 2^16*25 just fits into 4 digits i base 36.
1361            (* 25 25)))
1362   (let ((tm (if (fboundp 'current-time)
1363                 (current-time) '(12191 46742 287898))))
1364     (concat
1365      (if (memq system-type '(ms-dos emx vax-vms))
1366          (let ((user (downcase (gnus-inews-login-name))))
1367            (while (string-match "[^a-z0-9_]" user)
1368              (aset user (match-beginning 0) ?_))
1369            user)
1370        (gnus-number-base36 (user-uid) -1))
1371      (gnus-number-base36 (+ (car   tm) (lsh (% gnus-unique-id-char 25) 16)) 4)
1372      (gnus-number-base36 (+ (nth 1 tm) (lsh (/ gnus-unique-id-char 25) 16)) 4)
1373      ;; Append the newsreader name, because while the generated
1374      ;; ID is unique to this newsreader, other newsreaders might
1375      ;; otherwise generate the same ID via another algorithm.
1376      ".fsf")))
1377
1378
1379 (defun gnus-inews-date ()
1380   "Current time string."
1381   (timezone-make-date-arpa-standard
1382    (current-time-string) (current-time-zone)))
1383
1384 (defun gnus-inews-organization ()
1385   "Return user's organization.
1386 The ORGANIZATION environment variable is used if defined.
1387 If not, the variable `gnus-local-organization' is used instead.
1388 If it is a function, the function will be called with the current
1389 newsgroup name as the argument.
1390 If this is a file name, the contents of this file will be used as the
1391 organization."
1392   (let* ((organization
1393           (or (getenv "ORGANIZATION")
1394               (if gnus-local-organization
1395                   (if (and (symbolp gnus-local-organization)
1396                            (fboundp gnus-local-organization))
1397                       (funcall gnus-local-organization gnus-newsgroup-name)
1398                     gnus-local-organization))
1399               gnus-organization-file
1400               "~/.organization")))
1401     (and (stringp organization)
1402          (> (length organization) 0)
1403          (or (file-exists-p organization)
1404              (string-match " " organization)
1405              (not (string-match "^/usr/lib/" organization)))
1406          (save-excursion
1407            (gnus-set-work-buffer)
1408            (if (file-exists-p organization)
1409                (insert-file-contents organization)
1410              (insert organization))
1411            (goto-char (point-min))
1412            (while (re-search-forward " *\n *" nil t)
1413              (replace-match " " t t))
1414            (buffer-substring (point-min) (point-max))))))
1415
1416 (defun gnus-inews-lines ()
1417   "Count the number of lines and return numeric string."
1418   (save-excursion
1419     (save-restriction
1420       (widen)
1421       (goto-char (point-min))
1422       (re-search-forward
1423        (concat "^" (regexp-quote mail-header-separator) "$"))
1424       (forward-line 1)
1425       (int-to-string (count-lines (point) (point-max))))))
1426
1427 \f
1428 ;;;
1429 ;;; Gnus Mail Functions
1430 ;;;
1431
1432 ;;; Mail reply commands of Gnus summary mode
1433
1434 (defun gnus-summary-reply (yank &optional yank-articles)
1435   "Reply mail to news author.
1436 If prefix argument YANK is non-nil, original article is yanked automatically.
1437 Customize the variable gnus-mail-reply-method to use another mailer."
1438   (interactive "P")
1439   ;; Bug fix by jbw@bigbird.bu.edu (Joe Wells)
1440   ;; Stripping headers should be specified with mail-yank-ignored-headers.
1441   (gnus-set-global-variables)
1442   (if yank-articles (gnus-summary-goto-subject (car yank-articles)))
1443   (gnus-summary-select-article)
1444   (let ((gnus-newsgroup-name gnus-newsgroup-name))
1445     (bury-buffer gnus-article-buffer)
1446     (funcall gnus-mail-reply-method (or yank-articles (not (not yank))))))
1447
1448 (defun gnus-summary-reply-with-original (n)
1449   "Reply mail to news author with original article.
1450 Customize the variable gnus-mail-reply-method to use another mailer."
1451   (interactive "P")
1452   (gnus-summary-reply t (gnus-summary-work-articles n)))
1453
1454 (defun gnus-summary-mail-forward (post)
1455   "Forward the current message to another user.
1456 Customize the variable gnus-mail-forward-method to use another mailer."
1457   (interactive "P")
1458   (gnus-set-global-variables)
1459   (gnus-summary-select-article)
1460   (gnus-copy-article-buffer)
1461   (let ((gnus-newsgroup-name gnus-newsgroup-name))
1462     (if post
1463         (gnus-forward-using-post gnus-article-copy)
1464       (funcall gnus-mail-forward-method gnus-article-copy))))
1465
1466 (defun gnus-summary-post-forward ()
1467   "Forward the current article to a newsgroup."
1468   (interactive)
1469   (gnus-summary-mail-forward t))
1470
1471 (defvar gnus-nastygram-message
1472   "The following article was inappropriately posted to %s.\n"
1473   "Format string to insert in nastygrams.
1474 The current group name will be inserted at \"%s\".")
1475
1476 (defun gnus-summary-mail-nastygram (n)
1477   "Send a nastygram to the author of the current article."
1478   (interactive "P")
1479   (if (or gnus-expert-user
1480           (gnus-y-or-n-p
1481            "Really send a nastygram to the author of the current article? "))
1482       (let ((group gnus-newsgroup-name))
1483         (gnus-summary-reply-with-original n)
1484         (set-buffer gnus-mail-buffer)
1485         (insert (format gnus-nastygram-message group))
1486         (gnus-mail-send-and-exit))))
1487
1488 (defun gnus-summary-mail-other-window ()
1489   "Compose mail in other window.
1490 Customize the variable `gnus-mail-other-window-method' to use another
1491 mailer."
1492   (interactive)
1493   (gnus-set-global-variables)
1494   (let ((gnus-newsgroup-name gnus-newsgroup-name))
1495     (funcall gnus-mail-other-window-method)))
1496
1497 (defun gnus-mail-reply-using-mail (&optional yank to-address)
1498   (save-excursion
1499     (set-buffer gnus-summary-buffer)
1500     (let ((group (gnus-group-real-name gnus-newsgroup-name))
1501           (cur (cons (current-buffer) (cdr gnus-article-current)))
1502           (winconf (current-window-configuration))
1503           from subject date reply-to message-of
1504           references message-id sender follow-to sendto elt)
1505       (set-buffer (get-buffer-create gnus-mail-buffer))
1506       (mail-mode)
1507       (make-local-variable 'gnus-article-reply)
1508       (setq gnus-article-reply cur)
1509       (make-local-variable 'gnus-prev-winconf)
1510       (setq gnus-prev-winconf winconf)
1511       (if (and (buffer-modified-p)
1512                (> (buffer-size) 0)
1513                (not (gnus-y-or-n-p
1514                      "Unsent article being composed; erase it? ")))
1515           ()
1516         (erase-buffer)
1517         (save-excursion
1518           (gnus-copy-article-buffer)
1519           (save-restriction
1520             (set-buffer gnus-article-copy)
1521             (gnus-narrow-to-headers)
1522             (if (and (boundp 'gnus-reply-to-function)
1523                      gnus-reply-to-function)
1524                 (setq follow-to (funcall gnus-reply-to-function group)))
1525             (setq from (mail-fetch-field "from"))
1526             (setq date (or (mail-fetch-field "date")
1527                            (mail-header-date gnus-current-headers)))
1528             (and from
1529                  (let ((stop-pos
1530                         (string-match "  *at \\|  *@ \\| *(\\| *<" from)))
1531                    (setq message-of
1532                          (concat (if stop-pos (substring from 0 stop-pos) from)
1533                                  "'s message of " date))))
1534             (setq sender (mail-fetch-field "sender"))
1535             (setq subject (or (mail-fetch-field "subject")
1536                               "Re: none"))
1537             (or (string-match "^[Rr][Ee]:" subject)
1538                 (setq subject (concat "Re: " subject)))
1539             (setq reply-to (mail-fetch-field "reply-to"))
1540             (setq references (mail-fetch-field "references"))
1541             (setq message-id (mail-fetch-field "message-id"))
1542             (widen))
1543           (setq news-reply-yank-from (or from "(nobody)")))
1544         (setq news-reply-yank-message-id
1545               (or message-id "(unknown Message-ID)"))
1546
1547         ;; Gather the "to" addresses out of the follow-to list and remove
1548         ;; them as we go.
1549         (if (and follow-to (listp follow-to))
1550             (while (setq elt (assoc "To" follow-to))
1551               (setq sendto (concat sendto (and sendto ", ") (cdr elt)))
1552               (setq follow-to (delq elt follow-to))))
1553
1554         (mail-setup (or to-address
1555                         (if (and follow-to (not (stringp follow-to))) sendto
1556                           (or follow-to reply-to from sender "")))
1557                     subject message-of nil gnus-article-copy nil)
1558
1559         (auto-save-mode auto-save-default)
1560         (use-local-map (copy-keymap mail-mode-map))
1561         (local-set-key "\C-c\C-c" 'gnus-mail-send-and-exit)
1562
1563         (if (and follow-to (listp follow-to))
1564             (progn
1565               (goto-char (point-min))
1566               (re-search-forward "^To:" nil t)
1567               (beginning-of-line)
1568               (forward-line 1)
1569               (while follow-to
1570                 (insert (car (car follow-to)) ": " (cdr (car follow-to)) "\n")
1571                 (setq follow-to (cdr follow-to)))))
1572         (nnheader-insert-references references message-id)
1573         (goto-char (point-min))
1574         (re-search-forward
1575          (concat "^" (regexp-quote mail-header-separator) "$"))
1576         (forward-line 1)
1577         (if (not yank)
1578             (gnus-configure-windows 'reply 'force)
1579           (let ((last (point))
1580                 end)
1581             (if (not (listp yank))
1582                 (progn
1583                   (save-excursion
1584                     (mail-yank-original nil))
1585                   (or mail-yank-hooks mail-citation-hook
1586                       (run-hooks 'news-reply-header-hook)))
1587               (while yank
1588                 (save-window-excursion
1589                   (set-buffer gnus-summary-buffer)
1590                   (gnus-summary-select-article nil nil nil (car yank))
1591                   (gnus-summary-remove-process-mark (car yank)))
1592                 (save-excursion
1593                   (gnus-copy-article-buffer)
1594                   (mail-yank-original nil)
1595                   (setq end (point)))
1596                 (or mail-yank-hooks mail-citation-hook
1597                     (run-hooks 'news-reply-header-hook))
1598                 (goto-char end)
1599                 (setq yank (cdr yank))))
1600             (goto-char last))
1601           (gnus-configure-windows 'reply-yank 'force))
1602         (run-hooks 'gnus-mail-hook)))))
1603
1604 (defun gnus-mail-yank-original ()
1605   (interactive)
1606   (save-excursion
1607     (mail-yank-original nil))
1608   (or mail-yank-hooks mail-citation-hook
1609       (run-hooks 'news-reply-header-hook)))
1610
1611 (defun gnus-mail-send-and-exit ()
1612   (interactive)
1613   (let ((reply gnus-article-reply)
1614         (winconf gnus-prev-winconf))
1615     (mail-send-and-exit nil)
1616     (if (get-buffer gnus-group-buffer)
1617         (progn
1618           (if (gnus-buffer-exists-p (car-safe reply))
1619               (progn
1620                 (set-buffer (car reply))
1621                 (and (cdr reply)
1622                      (gnus-summary-mark-article-as-replied
1623                       (cdr reply)))))
1624           (and winconf (set-window-configuration winconf))))))
1625
1626 (defun gnus-forward-make-subject (buffer)
1627   (save-excursion
1628     (set-buffer buffer)
1629     (concat "[" (if (memq 'mail (assoc (symbol-name
1630                                         (car (gnus-find-method-for-group
1631                                               gnus-newsgroup-name)))
1632                                        gnus-valid-select-methods))
1633                     (gnus-fetch-field "From")
1634                   gnus-newsgroup-name)
1635             "] " (or (gnus-fetch-field "Subject") ""))))
1636
1637 (defun gnus-forward-insert-buffer (buffer)
1638   (let ((beg (goto-char (point-max))))
1639     (insert "------- Start of forwarded message -------\n")
1640     (insert-buffer buffer)
1641     (goto-char (point-max))
1642     (insert "------- End of forwarded message -------\n")
1643     ;; Suggested by Sudish Joseph <joseph@cis.ohio-state.edu>.
1644     (goto-char beg)
1645     (while (setq beg (next-single-property-change (point) 'invisible))
1646       (goto-char beg)
1647       (delete-region beg (or (next-single-property-change
1648                               (point) 'invisible)
1649                              (point-max))))))
1650
1651 (defun gnus-mail-forward-using-mail (&optional buffer)
1652   "Forward the current message to another user using mail."
1653   ;; This is almost a carbon copy of rmail-forward in rmail.el.
1654   (let* ((forward-buffer (or buffer (current-buffer)))
1655          (winconf (current-window-configuration))
1656          (subject (gnus-forward-make-subject forward-buffer)))
1657     (set-buffer forward-buffer)
1658     (mail nil nil subject)
1659     (use-local-map (copy-keymap (current-local-map)))
1660     (local-set-key "\C-c\C-c" 'gnus-mail-send-and-exit)
1661     (make-local-variable 'gnus-prev-winconf)
1662     (setq gnus-prev-winconf winconf)
1663     (gnus-forward-insert-buffer forward-buffer)
1664     (goto-char (point-min))
1665     (re-search-forward "^To: " nil t)
1666     (gnus-configure-windows 'mail-forward 'force)
1667     ;; You have a chance to arrange the message.
1668     (run-hooks 'gnus-mail-forward-hook)
1669     (run-hooks 'gnus-mail-hook)))
1670
1671 (defun gnus-forward-using-post (&optional buffer)
1672   (save-excursion
1673     (let* ((forward-buffer (or buffer (current-buffer)))
1674            (subject (gnus-forward-make-subject forward-buffer))
1675            (gnus-newsgroup-name nil))
1676       (gnus-post-news 'post nil nil nil nil subject)
1677       (save-excursion
1678         (gnus-forward-insert-buffer forward-buffer)
1679         ;; You have a chance to arrange the message.
1680         (run-hooks 'gnus-mail-forward-hook)))))
1681
1682 (defun gnus-mail-other-window-using-mail ()
1683   "Compose mail other window using mail."
1684   (let ((winconf (current-window-configuration)))
1685     (mail-other-window nil nil nil nil nil (get-buffer gnus-article-buffer))
1686     (use-local-map (copy-keymap (current-local-map)))
1687     (local-set-key "\C-c\C-c" 'gnus-mail-send-and-exit)
1688     (make-local-variable 'gnus-prev-winconf)
1689     (setq gnus-prev-winconf winconf)
1690     (run-hooks 'gnus-mail-hook)
1691     (gnus-configure-windows 'summary-mail 'force)))
1692
1693 (defun gnus-article-mail (yank)
1694   "Send a reply to the address near point.
1695 If YANK is non-nil, include the original article."
1696   (interactive "P")
1697   (let ((address
1698          (buffer-substring
1699           (save-excursion (re-search-backward "[ \t\n]" nil t) (1+ (point)))
1700           (save-excursion (re-search-forward "[ \t\n]" nil t) (1- (point))))))
1701     (and address
1702          (progn
1703            (switch-to-buffer gnus-summary-buffer)
1704            (funcall gnus-mail-reply-method yank address)))))
1705
1706 (defun gnus-bug ()
1707   "Send a bug report to the Gnus maintainers."
1708   (interactive)
1709   (let ((winconf (current-window-configuration)))
1710     (delete-other-windows)
1711     (switch-to-buffer "*Gnus Help Bug*")
1712     (erase-buffer)
1713     (insert gnus-bug-message)
1714     (goto-char (point-min))
1715     (pop-to-buffer "*Gnus Bug*")
1716     (erase-buffer)
1717     (mail-mode)
1718     (mail-setup gnus-maintainer nil nil nil nil nil)
1719     (auto-save-mode auto-save-default)
1720     (make-local-variable 'gnus-prev-winconf)
1721     (setq gnus-prev-winconf winconf)
1722     (use-local-map (copy-keymap mail-mode-map))
1723     (local-set-key "\C-c\C-c" 'gnus-bug-mail-send-and-exit)
1724     (goto-char (point-min))
1725     (re-search-forward (concat "^" (regexp-quote mail-header-separator) "$"))
1726     (forward-line 1)
1727     (insert (format "%s\n%s\n\n\n\n\n" (gnus-version) (emacs-version)))
1728     (gnus-debug)
1729     (goto-char (point-min))
1730     (search-forward "Subject: " nil t)
1731     (message "")))
1732
1733 (defun gnus-bug-mail-send-and-exit ()
1734   "Send the bug message and exit."
1735   (interactive)
1736   (and (get-buffer "*Gnus Help Bug*")
1737        (kill-buffer "*Gnus Help Bug*"))
1738   (gnus-mail-send-and-exit))
1739
1740 (defun gnus-debug ()
1741   "Attemps to go through the Gnus source file and report what variables have been changed.
1742 The source file has to be in the Emacs load path."
1743   (interactive)
1744   (let ((files '("gnus.el" "gnus-msg.el" "gnus-score.el"))
1745         file dirs expr olist sym)
1746     (message "Please wait while we snoop your variables...")
1747     (sit-for 0)
1748     (save-excursion
1749       (set-buffer (get-buffer-create " *gnus bug info*"))
1750       (buffer-disable-undo (current-buffer))
1751       (while files
1752         (erase-buffer)
1753         (setq dirs load-path)
1754         (while dirs
1755           (if (or (not (car dirs))
1756                   (not (stringp (car dirs)))
1757                   (not (file-exists-p
1758                         (setq file (concat (file-name-as-directory
1759                                             (car dirs)) (car files))))))
1760               (setq dirs (cdr dirs))
1761             (setq dirs nil)
1762             (insert-file-contents file)
1763             (goto-char (point-min))
1764             (or (re-search-forward "^;;* *Internal variables" nil t)
1765                 (error "Malformed sources in file %s" file))
1766             (narrow-to-region (point-min) (point))
1767             (goto-char (point-min))
1768             (while (setq expr (condition-case ()
1769                                   (read (current-buffer)) (error nil)))
1770               (condition-case ()
1771                   (and (eq (car expr) 'defvar)
1772                        (stringp (nth 3 expr))
1773                        (or (not (boundp (nth 1 expr)))
1774                            (not (equal (eval (nth 2 expr))
1775                                        (symbol-value (nth 1 expr)))))
1776                        (setq olist (cons (nth 1 expr) olist)))
1777                 (error nil)))))
1778         (setq files (cdr files)))
1779       (kill-buffer (current-buffer)))
1780     (insert "------------------- Environment follows -------------------\n\n")
1781     (while olist
1782       (if (boundp (car olist))
1783           (insert "(setq " (symbol-name (car olist))
1784                   (if (or (consp (setq sym (symbol-value (car olist))))
1785                           (and (symbolp sym)
1786                                (not (or (eq sym nil)
1787                                         (eq sym t)))))
1788                       " '" " ")
1789                   (prin1-to-string (symbol-value (car olist))) ")\n")
1790         (insert ";; (makeunbound '" (symbol-name (car olist)) ")\n"))
1791       (setq olist (cdr olist)))
1792     (insert "\n\n")
1793     ;; Remove any null chars - they seem to cause trouble for some
1794     ;; mailers. (Byte-compiled output from the stuff above.)
1795     (goto-char (point-min))
1796     (while (re-search-forward "[\000\200]" nil t)
1797       (replace-match "" t t))))
1798
1799 (gnus-ems-redefine)
1800
1801 (provide 'gnus-msg)
1802
1803 ;;; gnus-msg.el ends here