code.delx.au - gnu-emacs/blob - 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 ;;;###autoload
 413 (defun gnus-post-news (post &optional group header article-buffer yank subject)
 414   "Begin editing a new USENET news article to be posted.
 415 Type \\[describe-mode] in the buffer to get a list of commands."
 416   (interactive (list t))
 417   (gnus-copy-article-buffer article-buffer)
 418   (if (or (not gnus-novice-user)
 419           gnus-expert-user
 420           (not (eq 'post
 421                    (nth 1 (assoc
 422                            (format "%s" (car (gnus-find-method-for-group
 423                                               gnus-newsgroup-name)))
 424                            gnus-valid-select-methods))))
 425           (and group
 426                (assq 'to-address
 427                      (nth 5 (nth 2 (gnus-gethash group gnus-newsrc-hashtb)))))
 428           (gnus-y-or-n-p "Are you sure you want to post to all of USENET? "))
 429       (let ((sumart (if (not post)
 430                         (save-excursion
 431                           (set-buffer gnus-summary-buffer)
 432                           (cons (current-buffer) gnus-current-article))))
 433             (from (and header (mail-header-from header)))
 434             (winconf (current-window-configuration))
 435             real-group)
 436         (and gnus-interactive-post
 437              (not gnus-expert-user)
 438              post (not group)
 439              (progn
 440                (setq gnus-newsgroup-name
 441                      (setq group
 442                            (completing-read "Group: " gnus-active-hashtb)))
 443                (or subject
 444                    (setq subject (read-string "Subject: ")))))
 445         (setq mail-reply-buffer gnus-article-copy)
 446
 447         (let ((newsgroup-name (or group gnus-newsgroup-name "")))
 448           (setq real-group (and group (gnus-group-real-name group)))
 449           (setq gnus-post-news-buffer
 450                 (gnus-request-post-buffer
 451                  post real-group subject header gnus-article-copy
 452                  (nth 2 (and group (gnus-gethash group gnus-newsrc-hashtb)))
 453                  (or (cdr (assq 'to-group
 454                                 (nth 5 (nth 2 (gnus-gethash
 455                                                newsgroup-name
 456                                                gnus-newsrc-hashtb)))))
 457                      (if (and (boundp 'gnus-followup-to-function)
 458                               gnus-followup-to-function
 459                               gnus-article-copy)
 460                          (save-excursion
 461                            (set-buffer gnus-article-copy)
 462                            (funcall gnus-followup-to-function group))))
 463                  gnus-use-followup-to))
 464           (if post
 465               (gnus-configure-windows 'post 'force)
 466             (if yank
 467                 (gnus-configure-windows 'followup-yank 'force)
 468               (gnus-configure-windows 'followup 'force)))
 469           (gnus-overload-functions)
 470           (make-local-variable 'gnus-article-reply)
 471           (make-local-variable 'gnus-article-check-size)
 472           (make-local-variable 'gnus-reply-subject)
 473           (setq gnus-reply-subject (and header (mail-header-subject header)))
 474           (setq gnus-article-reply sumart)
 475           ;; Handle `gnus-auto-mail-to-author'.
 476           ;; Suggested by Daniel Quinlan <quinlan@best.com>.
 477           ;; Revised to respect Reply-To by Ulrik Dickow <dickow@nbi.dk>.
 478           (let ((to (and (not post)
 479                          (if (if (eq gnus-auto-mail-to-author 'ask)
 480                                  (y-or-n-p "Also send mail to author? ")
 481                                gnus-auto-mail-to-author)
 482                              (or (save-excursion
 483                                    (set-buffer gnus-article-copy)
 484                                    (gnus-fetch-field "reply-to"))
 485                                  from)))))
 486             (if to
 487                 (if (mail-fetch-field "To")
 488                     (progn
 489                       (beginning-of-line)
 490                       (insert "Cc: " to "\n"))
 491                   (mail-position-on-field "To")
 492                   (insert to))))
 493           ;; Handle author copy using BCC field.
 494           (if (and gnus-mail-self-blind
 495                    (not (mail-fetch-field "bcc")))
 496               (progn
 497                 (mail-position-on-field "Bcc")
 498                 (insert (if (stringp gnus-mail-self-blind)
 499                             gnus-mail-self-blind
 500                           (user-login-name)))))
 501           ;; Handle author copy using FCC field.
 502           (if gnus-author-copy
 503               (progn
 504                 (mail-position-on-field "Fcc")
 505                 (insert gnus-author-copy)))
 506           (goto-char (point-min))
 507           (if post
 508               (cond ((not group)
 509                      (re-search-forward "^Newsgroup:" nil t)
 510                      (end-of-line))
 511                     ((not subject)
 512                      (re-search-forward "^Subject:" nil t)
 513                      (end-of-line))
 514                     (t
 515                      (re-search-forward
 516                       (concat "^" (regexp-quote mail-header-separator) "$"))
 517                      (forward-line 1)))
 518             (re-search-forward
 519              (concat "^" (regexp-quote mail-header-separator) "$"))
 520             (forward-line 1)
 521             (if (not yank)
 522                 ()
 523               (save-excursion
 524                 (if (not (listp yank))
 525                     (news-reply-yank-original nil)
 526                   (setq yank (reverse yank))
 527                   (while yank
 528                     (save-excursion
 529                       (save-window-excursion
 530                         (set-buffer gnus-summary-buffer)
 531                         (gnus-summary-select-article nil nil nil (car yank))
 532                         (gnus-summary-remove-process-mark (car yank)))
 533                       (let ((mail-reply-buffer gnus-article-copy))
 534                         (gnus-copy-article-buffer)
 535                         (let ((news-reply-yank-message-id
 536                                (save-excursion
 537                                  (set-buffer gnus-article-copy)
 538                                  (mail-fetch-field "message-id")))
 539                               (news-reply-yank-from
 540                                (save-excursion
 541                                  (set-buffer gnus-article-copy)
 542                                  (mail-fetch-field "from"))))
 543                           (news-reply-yank-original nil))
 544                         (setq yank (cdr yank)))))))))
 545           (if gnus-post-prepare-function
 546               (funcall gnus-post-prepare-function group))
 547           (run-hooks 'gnus-post-prepare-hook)
 548           (make-local-variable 'gnus-prev-winconf)
 549           (setq gnus-prev-winconf winconf))))
 550   (setq gnus-article-check-size (cons (buffer-size) (gnus-article-checksum)))
 551   (message "")
 552   t)
 553
 554 (defun gnus-inews-news (&optional use-group-method)
 555   "Send a news message.
 556 If given a prefix, and the group is a foreign group, this function
 557 will attempt to use the foreign server to post the article."
 558   (interactive "P")
 559   (or gnus-current-select-method
 560       (setq gnus-current-select-method gnus-select-method))
 561   (let* ((case-fold-search nil)
 562          (server-running (gnus-server-opened gnus-current-select-method))
 563          (reply gnus-article-reply)
 564          error post-result)
 565     (save-excursion
 566       ;; Connect to default NNTP server if necessary.
 567       ;; Suggested by yuki@flab.fujitsu.junet.
 568       (gnus-start-news-server)          ;Use default server.
 569       ;; NNTP server must be opened before current buffer is modified.
 570       (widen)
 571       (goto-char (point-min))
 572       (run-hooks 'news-inews-hook)
 573       (save-restriction
 574         (narrow-to-region
 575          (point-min)
 576          (progn
 577            (goto-char (point-min))
 578            (re-search-forward
 579             (concat "^" (regexp-quote mail-header-separator) "$"))
 580            (match-beginning 0)))
 581
 582         ;; Correct newsgroups field: change sequence of spaces to comma and
 583         ;; eliminate spaces around commas.  Eliminate embedded line breaks.
 584         (goto-char (point-min))
 585         (if (re-search-forward "^Newsgroups: +" nil t)
 586             (save-restriction
 587               (narrow-to-region
 588                (point)
 589                (if (re-search-forward "^[^ \t]" nil t)
 590                    (match-beginning 0)
 591                  (forward-line 1)
 592                  (point)))
 593               (goto-char (point-min))
 594               (while (re-search-forward "\n[ \t]+" nil t)
 595                 (replace-match " " t t)) ;No line breaks (too confusing)
 596               (goto-char (point-min))
 597               (while (re-search-forward "[ \t\n]*,[ \t\n]*\\|[ \t]+" nil t)
 598                 (replace-match "," t t))
 599               (goto-char (point-min))
 600               ;; Remove a trailing comma.
 601               (if (re-search-forward ",$" nil t)
 602                   (replace-match "" t t))))
 603
 604         ;; Added by Per Abrahamsen <abraham@iesd.auc.dk>.
 605         ;; Help save the the world!
 606         (or
 607          gnus-expert-user
 608          (let ((newsgroups (mail-fetch-field "newsgroups"))
 609                (followup-to (mail-fetch-field "followup-to"))
 610                groups to)
 611            (if (and newsgroups
 612                     (string-match "," newsgroups) (not followup-to))
 613                (progn
 614                  (while (string-match "," newsgroups)
 615                    (setq groups
 616                          (cons (list (substring newsgroups
 617                                                 0 (match-beginning 0)))
 618                                groups))
 619                    (setq newsgroups (substring newsgroups (match-end 0))))
 620                  (setq groups (nreverse (cons (list newsgroups) groups)))
 621
 622                  (setq to
 623                        (completing-read "Followups to: (default all groups) "
 624                                         groups))
 625                  (if (> (length to) 0)
 626                      (progn
 627                        (goto-char (point-min))
 628                        (insert "Followup-To: " to "\n")))))))
 629
 630         ;; Cleanup Followup-To.
 631         (goto-char (point-min))
 632         (if (search-forward-regexp "^Followup-To: +" nil t)
 633             (save-restriction
 634               (narrow-to-region
 635                (point)
 636                (if (re-search-forward "^[^ \t]" nil 'end)
 637                    (match-beginning 0)
 638                  (point-max)))
 639               (goto-char (point-min))
 640               (replace-regexp "\n[ \t]+" " ") ;No line breaks (too confusing)
 641               (goto-char (point-min))
 642               (replace-regexp "[ \t\n]*,[ \t\n]*\\|[ \t]+" ",")))
 643
 644         ;; Mail the message too if To:, Bcc:. or Cc: exists.
 645         (let* ((types '("to" "bcc" "cc"))
 646                (ty types)
 647                fcc-line)
 648           (while ty
 649             (or (mail-fetch-field (car ty) nil t)
 650                 (setq types (delete (car ty) types)))
 651             (setq ty (cdr ty)))
 652
 653           (if (not types)
 654               ;; We do not want to send mail.
 655               ()
 656             (if (not gnus-mail-send-method)
 657                 (progn
 658                   (ding)
 659                   (gnus-message
 660                    1 "No mailer defined.  To: and/or Cc: fields ignored.")
 661                   (sit-for 1))
 662               (save-excursion
 663                 ;; We want to remove Fcc, because we want to handle
 664                 ;; that one ourselves...
 665
 666                 (goto-char (point-min))
 667                 (if (re-search-forward "^Fcc: " nil t)
 668                     (progn
 669                       (setq fcc-line
 670                             (buffer-substring
 671                              (progn (beginning-of-line) (point))
 672                              (progn (forward-line 1) (point))))
 673                       (forward-line -1)
 674                       (gnus-delete-line)))
 675
 676                 ;; We generate a Message-ID so that the mail and the
 677                 ;; news copy of the message both get the same ID.
 678                 (or (mail-fetch-field "message-id")
 679                     (not (memq 'Message-ID gnus-required-headers))
 680                     (progn
 681                       (goto-char (point-max))
 682                       (insert "Message-ID: " (gnus-inews-message-id) "\n")))
 683
 684                 (save-restriction
 685                   (widen)
 686                   (gnus-message 5 "Sending via mail...")
 687
 688                   (if (and gnus-mail-courtesy-message
 689                            (or (member "to" types)
 690                                (member "cc" types)))
 691                       ;; We only want to insert the courtesy mail
 692                       ;; message if we use to or cc; bcc should not
 693                       ;; have one. Well, if both bcc and to are
 694                       ;; present, it will get one anyway.
 695                       (progn
 696                         ;; Insert "courtesy" mail message.
 697                         (goto-char (point-min))
 698                         (re-search-forward
 699                          (concat "^" (regexp-quote
 700                                       mail-header-separator) "$"))
 701                         (forward-line 1)
 702                         (insert gnus-mail-courtesy-message)
 703                         (funcall gnus-mail-send-method)
 704                         (goto-char (point-min))
 705                         (search-forward gnus-mail-courtesy-message)
 706                         (replace-match "" t t))
 707                     (funcall gnus-mail-send-method))
 708
 709                   (gnus-message 5 "Sending via mail...done")
 710
 711                   (goto-char (point-min))
 712                   (narrow-to-region
 713                    (point)
 714                    (re-search-forward
 715                     (concat "^" (regexp-quote mail-header-separator) "$")))
 716                   (goto-char (point-min))
 717                   (while (re-search-forward "^BCC:" nil t)
 718                     (delete-region (match-beginning 0)
 719                                    ;; There might be continuation headers.
 720                                    (if (re-search-forward "^[^ \t]" nil t)
 721                                        (match-beginning 0)
 722                                      ;; Uhm... or something like this.
 723                                      (forward-line 1)
 724                                      (point)))))
 725                 (if fcc-line
 726                     (progn
 727                       (goto-char (point-max))
 728                       (insert fcc-line))))))))
 729
 730       ;; Send to server.
 731       (gnus-message 5 "Posting to USENET...")
 732       (setq post-result (funcall gnus-inews-article-function use-group-method))
 733       (cond ((eq post-result 'illegal)
 734              (setq error t)
 735              (ding))
 736             (post-result
 737              (gnus-message 5 "Posting to USENET...done")
 738              (if (gnus-buffer-exists-p (car-safe reply))
 739                  (progn
 740                    (save-excursion
 741                      (set-buffer gnus-summary-buffer)
 742                      (gnus-summary-mark-article-as-replied
 743                       (cdr reply)))))
 744              (set-buffer-modified-p nil))
 745             (t
 746              ;; We cannot signal an error.
 747              (setq error t)
 748              (ding)
 749              (gnus-message 1 "Article rejected: %s"
 750                            (gnus-status-message gnus-select-method)))))
 751     ;; If NNTP server is opened by gnus-inews-news, close it by myself.
 752     (or server-running
 753         (gnus-close-server (gnus-find-method-for-group gnus-newsgroup-name)))
 754     (let ((conf gnus-prev-winconf))
 755       (if (not error)
 756           (progn
 757             (bury-buffer)
 758             ;; Restore last window configuration.
 759             (and conf (set-window-configuration conf)))))))
 760
 761 (defun gnus-inews-check-post ()
 762   "Check whether the post looks ok."
 763   (or
 764    (not gnus-check-before-posting)
 765    (and
 766     ;; We narrow to the headers and check them first.
 767     (save-excursion
 768       (save-restriction
 769         (goto-char (point-min))
 770         (narrow-to-region
 771          (point)
 772          (progn
 773            (re-search-forward
 774             (concat "^" (regexp-quote mail-header-separator) "$"))
 775            (match-beginning 0)))
 776         (goto-char (point-min))
 777         (and
 778          ;; Check for commands in Subject.
 779          (or
 780           (gnus-check-before-posting 'subject-cmsg)
 781           (save-excursion
 782             (if (string-match "^cmsg " (mail-fetch-field "subject"))
 783                 (gnus-y-or-n-p
 784                  "The control code \"cmsg \" is in the subject. Really post? ")
 785               t)))
 786          ;; Check for multiple identical headers.
 787          (or (gnus-check-before-posting 'multiple-headers)
 788              (save-excursion
 789                (let (found)
 790                  (while (and (not found) (re-search-forward "^[^ \t:]+: "
 791                                                             nil t))
 792                    (save-excursion
 793                      (or (re-search-forward
 794                           (concat "^" (setq found
 795                                             (buffer-substring
 796                                              (match-beginning 0)
 797                                              (- (match-end 0) 2))))
 798                           nil t)
 799                          (setq found nil))))
 800                  (if found
 801                      (gnus-y-or-n-p
 802                       (format "Multiple %s headers. Really post? " found))
 803                    t))))
 804          ;; Check for version and sendsys.
 805          (or (gnus-check-before-posting 'sendsys)
 806              (save-excursion
 807                (if (re-search-forward "^Sendsys:\\|^Version:" nil t)
 808                    (gnus-y-or-n-p
 809                     (format "The article contains a %s command. Really post? "
 810                             (buffer-substring (match-beginning 0)
 811                                               (1- (match-end 0)))))
 812                  t)))
 813          ;; Check the Message-Id header.
 814          (or (gnus-check-before-posting 'message-id)
 815              (save-excursion
 816                (let* ((case-fold-search t)
 817                       (message-id (mail-fetch-field "message-id")))
 818                  (or (not message-id)
 819                      (and (string-match "@" message-id)
 820                           (string-match "@[^\\.]*\\." message-id))
 821                      (gnus-y-or-n-p
 822                       (format
 823                        "The Message-ID looks strange: \"%s\". Really post? "
 824                        message-id))))))
 825          ;; Check the From header.
 826          (or (gnus-check-before-posting 'from)
 827              (save-excursion
 828                (let* ((case-fold-search t)
 829                       (from (mail-fetch-field "from")))
 830                  (cond
 831                   ((not from)
 832                    (gnus-y-or-n-p "There is no From line. Really post? "))
 833                   ((not (string-match "@[^\\.]*\\." from))
 834                    (gnus-y-or-n-p
 835                     (format
 836                      "The address looks strange: \"%s\". Really post? " from)))
 837                   ((string-match "(.*).*(.*)" from)
 838                    (gnus-y-or-n-p
 839                     (format
 840                      "The From header looks strange: \"%s\". Really post? "
 841                      from)))
 842                   (t t)))))
 843          )))
 844     ;; Check for long lines.
 845     (or (gnus-check-before-posting 'long-lines)
 846         (save-excursion
 847           (goto-char (point-min))
 848           (re-search-forward
 849            (concat "^" (regexp-quote mail-header-separator) "$"))
 850           (while (and
 851                   (progn
 852                     (end-of-line)
 853                     (< (current-column) 80))
 854                   (zerop (forward-line 1))))
 855           (or (bolp)
 856               (eobp)
 857               (gnus-y-or-n-p
 858                (format
 859                 "You have lines longer than 79 characters.  Really post? ")))))
 860     ;; Check for control characters.
 861     (or (gnus-check-before-posting 'control-chars)
 862         (save-excursion
 863           (if (re-search-forward "[\000-\007\013\015-\037\200-\237]" nil t)
 864               (gnus-y-or-n-p
 865                "The article contains control characters. Really post? ")
 866             t)))
 867     ;; Check excessive size.
 868     (or (gnus-check-before-posting 'size)
 869         (if (> (buffer-size) 60000)
 870             (gnus-y-or-n-p
 871              (format "The article is %d octets long. Really post? "
 872                      (buffer-size)))
 873           t))
 874     ;; Use the (size . checksum) variable to see whether the
 875     ;; article is empty or has only quoted text.
 876     (or
 877      (gnus-check-before-posting 'new-text)
 878      (if (and (= (buffer-size) (car gnus-article-check-size))
 879               (= (gnus-article-checksum) (cdr gnus-article-check-size)))
 880          (gnus-y-or-n-p
 881           "It looks like there's no new text in your article. Really post? ")
 882        t))
 883     ;; Check the length of the signature.
 884     (or (gnus-check-before-posting 'signature)
 885         (progn
 886           (goto-char (point-max))
 887           (if (not (re-search-backward gnus-signature-separator nil t))
 888               t
 889             (if (> (count-lines (point) (point-max)) 5)
 890                 (gnus-y-or-n-p
 891                  (format
 892                   "Your .sig is %d lines; it should be max 4.  Really post? "
 893                   (count-lines (point) (point-max))))
 894               t)))))))
 895
 896 (defun gnus-article-checksum ()
 897   (let ((sum 0))
 898     (save-excursion
 899       (while (not (eobp))
 900         (setq sum (logxor sum (following-char)))
 901         (forward-char 1)))
 902     sum))
 903
 904 ;; Returns non-nil if this type is not to be checked.
 905 (defun gnus-check-before-posting (type)
 906   (not
 907    (or (not gnus-check-before-posting)
 908        (if (listp gnus-check-before-posting)
 909            (memq type gnus-check-before-posting)
 910          t))))
 911
 912 (defun gnus-cancel-news ()
 913   "Cancel an article you posted."
 914   (interactive)
 915   (if (or gnus-expert-user
 916           (gnus-yes-or-no-p "Do you really want to cancel this article? "))
 917       (let ((from nil)
 918             (newsgroups nil)
 919             (message-id nil)
 920             (distribution nil))
 921         (or (gnus-member-of-valid 'post gnus-newsgroup-name)
 922             (error "This backend does not support canceling"))
 923         (save-excursion
 924           ;; Get header info. from original article.
 925           (save-restriction
 926             (gnus-article-show-all-headers)
 927             (goto-char (point-min))
 928             (search-forward "\n\n" nil 'move)
 929             (narrow-to-region (point-min) (point))
 930             (setq from (mail-fetch-field "from"))
 931             (setq newsgroups (mail-fetch-field "newsgroups"))
 932             (setq message-id (mail-fetch-field "message-id"))
 933             (setq distribution (mail-fetch-field "distribution")))
 934           ;; Verify if the article is absolutely user's by comparing
 935           ;; user id with value of its From: field.
 936           (if (not
 937                (string-equal
 938                 (downcase (mail-strip-quoted-names from))
 939                 (downcase (mail-strip-quoted-names (gnus-inews-user-name)))))
 940               (progn
 941                 (ding) (gnus-message 3 "This article is not yours.")
 942                 nil)
 943             ;; Make control article.
 944             (set-buffer (get-buffer-create " *Gnus-canceling*"))
 945             (buffer-disable-undo (current-buffer))
 946             (erase-buffer)
 947             (insert "Newsgroups: " newsgroups "\n"
 948                     "Subject: cancel " message-id "\n"
 949                     "Control: cancel " message-id "\n"
 950                     (if distribution
 951                         (concat "Distribution: " distribution "\n")
 952                       "")
 953                     mail-header-separator "\n"
 954                     "This is a cancel message from " from ".\n")
 955             ;; Send the control article to NNTP server.
 956             (gnus-message 5 "Canceling your article...")
 957             (prog1
 958                 (if (funcall gnus-inews-article-function)
 959                     (gnus-message 5 "Canceling your article...done")
 960                   (progn
 961                     (ding)
 962                     (gnus-message 1 "Cancel failed; %s"
 963                                   (gnus-status-message gnus-newsgroup-name))
 964                     nil)
 965                   t)
 966               ;; Kill the article buffer.
 967               (kill-buffer (current-buffer))))))))
 968
 969 \f
 970 ;;; Lowlevel inews interface
 971
 972 (defun gnus-inews-article (&optional use-group-method)
 973   "Post an article in current buffer using NNTP protocol."
 974   (let ((artbuf (current-buffer))
 975         (tmpbuf (get-buffer-create " *Gnus-posting*")))
 976     (widen)
 977     (goto-char (point-max))
 978     ;; require a newline at the end for inews to append .signature to
 979     (or (= (preceding-char) ?\n)
 980         (insert ?\n))
 981     ;; Prepare article headers.  All message body such as signature
 982     ;; must be inserted before Lines: field is prepared.
 983     (save-restriction
 984       (goto-char (point-min))
 985       (narrow-to-region
 986        (point-min)
 987        (save-excursion
 988          (re-search-forward
 989           (concat "^" (regexp-quote mail-header-separator) "$"))
 990          (match-beginning 0)))
 991       (gnus-inews-remove-headers)
 992       (gnus-inews-insert-headers)
 993       (run-hooks 'gnus-inews-article-header-hook)
 994       (widen))
 995     ;; Check whether the article is a good Net Citizen.
 996     (if (and gnus-article-check-size
 997              (not (gnus-inews-check-post)))
 998         ;; Aber nein!
 999         'illegal
1000       ;; Looks ok, so we do the nasty.
1001       (save-excursion
1002         (set-buffer tmpbuf)
1003         (buffer-disable-undo (current-buffer))
1004         (erase-buffer)
1005         (insert-buffer-substring artbuf)
1006         ;; Remove the header separator.
1007         (goto-char (point-min))
1008         (re-search-forward
1009          (concat "^" (regexp-quote mail-header-separator) "$"))
1010         (replace-match "" t t)
1011         ;; This hook may insert a signature.
1012         (save-excursion
1013           (goto-char (point-min))
1014           (let ((gnus-newsgroup-name (or (mail-fetch-field "newsgroups")
1015                                          gnus-newsgroup-name)))
1016             (run-hooks 'gnus-prepare-article-hook)))
1017         ;; Run final inews hooks.  This hook may do FCC.
1018         ;; The article must be saved before being posted because
1019         ;; `gnus-request-post' modifies the buffer.
1020         (run-hooks 'gnus-inews-article-hook)
1021         ;; Post an article to NNTP server.
1022         ;; Return NIL if post failed.
1023         (prog1
1024             (gnus-request-post
1025              (if use-group-method
1026                  (gnus-find-method-for-group gnus-newsgroup-name)
1027                gnus-select-method) use-group-method)
1028           (kill-buffer (current-buffer)))))))
1029
1030 (defun gnus-inews-remove-headers ()
1031   (let ((case-fold-search t)
1032         (headers gnus-removable-headers))
1033     ;; Remove toxic headers.
1034     (while headers
1035       (goto-char (point-min))
1036       (and (re-search-forward
1037             (concat "^" (downcase (format "%s" (car headers))))
1038             nil t)
1039            (delete-region (progn (beginning-of-line) (point))
1040                           (progn (forward-line 1) (point))))
1041       (setq headers (cdr headers)))))
1042
1043 (defun gnus-inews-insert-headers ()
1044   "Prepare article headers.
1045 Headers already prepared in the buffer are not modified.
1046 Headers in `gnus-required-headers' will be generated."
1047   (let ((Date (gnus-inews-date))
1048         (Message-ID (gnus-inews-message-id))
1049         (Organization (gnus-inews-organization))
1050         (From (gnus-inews-user-name))
1051         (Path (gnus-inews-path))
1052         (Subject nil)
1053         (Newsgroups nil)
1054         (Distribution nil)
1055         (Lines (gnus-inews-lines))
1056         (X-Newsreader gnus-version)
1057         (headers gnus-required-headers)
1058         (case-fold-search t)
1059         header value elem)
1060     ;; First we remove any old generated headers.
1061     (let ((headers gnus-deletable-headers))
1062       (while headers
1063         (goto-char (point-min))
1064         (and (re-search-forward
1065               (concat "^" (symbol-name (car headers)) ": *") nil t)
1066              (get-text-property (1+ (match-beginning 0)) 'gnus-deletable)
1067              (gnus-delete-line))
1068         (setq headers (cdr headers))))
1069     ;; If there are References, and no "Re: ", then the thread has
1070     ;; changed name. See Son-of-1036.
1071     (if (and (mail-fetch-field "references")
1072              (get-buffer gnus-article-buffer))
1073         (let ((psubject (gnus-simplify-subject-re
1074                          (mail-fetch-field "subject"))))
1075           (or (and psubject gnus-reply-subject
1076                    (string= (gnus-simplify-subject-re gnus-reply-subject)
1077                             psubject))
1078               (progn
1079                 (string-match "@" Message-ID)
1080                 (setq Message-ID
1081                       (concat (substring Message-ID 0 (match-beginning 0))
1082                               "_-_"
1083                               (substring Message-ID (match-beginning 0))))))))
1084     ;; Go through all the required headers and see if they are in the
1085     ;; articles already. If they are not, or are empty, they are
1086     ;; inserted automatically - except for Subject, Newsgroups and
1087     ;; Distribution.
1088     (while headers
1089       (goto-char (point-min))
1090       (setq elem (car headers))
1091       (if (consp elem)
1092           (setq header (car elem))
1093         (setq header elem))
1094       (if (or (not (re-search-forward
1095                     (concat "^" (downcase (symbol-name header)) ":") nil t))
1096               (progn
1097                 ;; The header was found. We insert a space after the
1098                 ;; colon, if there is none.
1099                 (if (/= (following-char) ? ) (insert " "))
1100                 ;; Find out whether the header is empty...
1101                 (looking-at "[ \t]*$")))
1102           ;; So we find out what value we should insert.
1103           (progn
1104             (setq value
1105                   (or (if (consp elem)
1106                           ;; The element is a cons.  Either the cdr is
1107                           ;; a string to be inserted verbatim, or it
1108                           ;; is a function, and we insert the value
1109                           ;; returned from this function.
1110                           (or (and (stringp (cdr elem)) (cdr elem))
1111                               (and (fboundp (cdr elem)) (funcall (cdr elem))))
1112                         ;; The element is a symbol.  We insert the
1113                         ;; value of this symbol, if any.
1114                         (and (boundp header) (symbol-value header)))
1115                       ;; We couldn't generate a value for this header,
1116                       ;; so we just ask the user.
1117                       (read-from-minibuffer
1118                        (format "Empty header for %s; enter value: " header))))
1119             ;; Finally insert the header.
1120             (save-excursion
1121               (if (bolp)
1122                   (progn
1123                     (goto-char (point-max))
1124                     (insert (symbol-name header) ": " value "\n")
1125                     (forward-line -1))
1126                 (replace-match value t t))
1127               ;; Add the deletable property to the headers that require it.
1128               (and (memq header gnus-deletable-headers)
1129                    (progn (beginning-of-line) (looking-at "[^:]+: "))
1130                    (add-text-properties
1131                     (point) (match-end 0)
1132                     '(gnus-deletable t face italic) (current-buffer))))))
1133       (setq headers (cdr headers)))
1134     ;; Insert new Sender if the From is strange.
1135     (let ((from (mail-fetch-field "from"))
1136           (sender (mail-fetch-field "sender")))
1137       (if (and from
1138                (not (string=
1139                      (downcase (car (gnus-extract-address-components from)))
1140                      (downcase (gnus-inews-real-user-address))))
1141                (or (null sender)
1142                    (not
1143                     (string=
1144                      (downcase (car (gnus-extract-address-components sender)))
1145                      (downcase (gnus-inews-real-user-address))))))
1146           (progn
1147             (goto-char (point-min))
1148             (and (re-search-forward "^Sender:" nil t)
1149                  (progn
1150                    (beginning-of-line)
1151                    (insert "Original-")
1152                    (beginning-of-line)))
1153             (insert "Sender: " (gnus-inews-real-user-address) "\n"))))))
1154
1155
1156 (defun gnus-inews-insert-signature ()
1157   "Insert a signature file.
1158 If `gnus-signature-function' is bound and returns a string, this
1159 string is used instead of the variable `gnus-signature-file'.
1160 In either case, if the string is a file name, this file is
1161 inserted. If the string is not a file name, the string itself is
1162 inserted.
1163
1164 If you never want any signature inserted, set both of these variables to
1165 nil."
1166   (save-excursion
1167     (let ((signature
1168            (or (and gnus-signature-function
1169                     (funcall gnus-signature-function gnus-newsgroup-name))
1170                gnus-signature-file)))
1171       (if (and signature
1172                (or (file-exists-p signature)
1173                    (string-match " " signature)
1174                    (not (string-match
1175                          "^/[^/]+/" (expand-file-name signature)))))
1176           (progn
1177             (goto-char (point-max))
1178             (if (and mail-signature (search-backward "\n-- \n" nil t))
1179                 ()
1180               ;; Delete any previous signatures.
1181               (if (search-backward "\n-- \n" nil t)
1182                   (delete-region (point) (point-max)))
1183               (or (eolp) (insert "\n"))
1184               (insert "-- \n")
1185               (if (file-exists-p signature)
1186                   (insert-file-contents signature)
1187                 (insert signature))
1188               (goto-char (point-max))
1189               (or (bolp) (insert "\n"))))))))
1190
1191 ;; Written by "Mr. Per Persson" <pp@solace.mh.se>.
1192 (defun gnus-inews-insert-mime-headers ()
1193   (let ((mail-header-separator ""))
1194     (or (mail-position-on-field "Mime-Version")
1195         (insert "1.0")
1196         (cond ((save-excursion
1197                  (beginning-of-buffer)
1198                  (re-search-forward "[\200-\377]" nil t))
1199                (or (mail-position-on-field "Content-Type")
1200                    (insert "text/plain; charset=ISO-8859-1"))
1201                (or (mail-position-on-field "Content-Transfer-Encoding")
1202                    (insert "8bit")))
1203               (t (or (mail-position-on-field "Content-Type")
1204                      (insert "text/plain; charset=US-ASCII"))
1205                  (or (mail-position-on-field "Content-Transfer-Encoding")
1206                      (insert "7bit")))))))
1207
1208 (defun gnus-inews-do-fcc ()
1209   "Process FCC: fields in current article buffer.
1210 Unless the first character of the field is `|', the article is saved
1211 to the specified file using the function specified by the variable
1212 gnus-author-copy-saver.  The default function rmail-output saves in
1213 Unix mailbox format.
1214 If the first character is `|', the contents of the article is send to
1215 a program specified by the rest of the value."
1216   (let ((fcc-list nil)
1217         (fcc-file nil)
1218         (case-fold-search t))           ;Should ignore case.
1219     (save-excursion
1220       (save-restriction
1221         (goto-char (point-min))
1222         (search-forward "\n\n")
1223         (narrow-to-region (point-min) (point))
1224         (goto-char (point-min))
1225         (while (re-search-forward "^FCC:[ \t]*" nil t)
1226           (setq fcc-list
1227                 (cons (buffer-substring
1228                        (point)
1229                        (progn
1230                          (end-of-line)
1231                          (skip-chars-backward " \t")
1232                          (point)))
1233                       fcc-list))
1234           (delete-region (match-beginning 0)
1235                          (progn (forward-line 1) (point))))
1236         ;; Process FCC operations.
1237         (widen)
1238         (while fcc-list
1239           (setq fcc-file (car fcc-list))
1240           (setq fcc-list (cdr fcc-list))
1241           (cond ((string-match "^[ \t]*|[ \t]*\\(.*\\)[ \t]*$" fcc-file)
1242                  (let ((program (substring fcc-file
1243                                            (match-beginning 1) (match-end 1))))
1244                    ;; Suggested by yuki@flab.fujitsu.junet.
1245                    ;; Send article to named program.
1246                    (call-process-region (point-min) (point-max) shell-file-name
1247                                         nil nil nil "-c" program)))
1248                 (t
1249                  ;; Suggested by hyoko@flab.fujitsu.junet.
1250                  ;; Save article in Unix mail format by default.
1251                  (gnus-make-directory (file-name-directory fcc-file))
1252                  (if (and gnus-author-copy-saver
1253                           (not (eq gnus-author-copy-saver 'rmail-output)))
1254                      (funcall gnus-author-copy-saver fcc-file)
1255                    (if (and (file-readable-p fcc-file)
1256                             (mail-file-babyl-p fcc-file))
1257                        (gnus-output-to-rmail fcc-file)
1258                      (rmail-output fcc-file 1 t t))))))))))
1259
1260 (defun gnus-inews-path ()
1261   "Return uucp path."
1262   (let ((login-name (gnus-inews-login-name)))
1263     (cond ((null gnus-use-generic-path)
1264            (concat (nth 1 gnus-select-method) "!" login-name))
1265           ((stringp gnus-use-generic-path)
1266            ;; Support GENERICPATH.  Suggested by vixie@decwrl.dec.com.
1267            (concat gnus-use-generic-path "!" login-name))
1268           (t login-name))))
1269
1270 (defun gnus-inews-user-name ()
1271   "Return user's network address as \"NAME@DOMAIN (FULL-NAME)\"."
1272   (let ((full-name (gnus-inews-full-name))
1273         (address (if (or gnus-user-login-name gnus-use-generic-from
1274                          gnus-local-domain (getenv "DOMAINNAME"))
1275                      (concat (gnus-inews-login-name) "@"
1276                              (gnus-inews-domain-name gnus-use-generic-from))
1277                    user-mail-address)))
1278     (or gnus-user-from-line
1279         (concat address
1280                 ;; User's full name.
1281                 (cond ((string-equal full-name "&") ;Unix hack.
1282                        (concat " (" (user-login-name) ")"))
1283                       ((string-match "[^ ]+@[^ ]+ +(.*)" address)
1284                        "")
1285                       (t
1286                        (concat " (" full-name ")")))))))
1287
1288 (defun gnus-inews-real-user-address ()
1289   "Return the \"real\" user address.
1290 This function tries to ignore all user modifications, and
1291 give as trustworthy answer as possible."
1292   (concat (user-login-name) "@" (gnus-inews-full-address)))
1293
1294 (defun gnus-inews-login-name ()
1295   "Return login name."
1296   (or gnus-user-login-name (getenv "LOGNAME") (user-login-name)))
1297
1298 (defun gnus-inews-full-name ()
1299   "Return full user name."
1300   (or gnus-user-full-name (getenv "NAME") (user-full-name)))
1301
1302 (defun gnus-inews-domain-name (&optional genericfrom)
1303   "Return user's domain name.
1304 If optional argument GENERICFROM is a string, use it as the domain
1305 name; if it is non-nil, strip off local host name from the domain name.
1306 If the function `system-name' returns full internet name and the
1307 domain is undefined, the domain name is got from it."
1308   (if (or genericfrom gnus-local-domain (getenv "DOMAINNAME"))
1309       (let* ((system-name (system-name))
1310              (domain
1311               (or (if (stringp genericfrom) genericfrom)
1312                   (getenv "DOMAINNAME")
1313                   gnus-local-domain
1314                   ;; Function `system-name' may return full internet name.
1315                   ;; Suggested by Mike DeCorte <mrd@sun.soe.clarkson.edu>.
1316                   (if (string-match "\\." system-name)
1317                       (substring system-name (match-end 0)))
1318                   (read-string "Domain name (no host): ")))
1319              (host (or (if (string-match "\\." system-name)
1320                            (substring system-name 0 (match-beginning 0)))
1321                        system-name)))
1322         (if (string-equal "." (substring domain 0 1))
1323             (setq domain (substring domain 1)))
1324         ;; Support GENERICFROM as same as standard Bnews system.
1325         ;; Suggested by ohm@kaba.junet and vixie@decwrl.dec.com.
1326         (cond ((null genericfrom)
1327                (concat host "." domain))
1328               ;;((stringp genericfrom) genericfrom)
1329               (t domain)))
1330     (if (string-match "\\." (system-name))
1331         (system-name)
1332       (substring user-mail-address
1333                  (1+ (string-match "@" user-mail-address))))))
1334
1335 (defun gnus-inews-full-address ()
1336   (let ((domain (gnus-inews-domain-name))
1337         (system (system-name))
1338         (case-fold-search t))
1339     (if (string-match "\\." system) system
1340       (if (string-match (concat "^" (regexp-quote system)) domain) domain
1341         (concat system "." domain)))))
1342
1343 (defun gnus-inews-message-id ()
1344   "Generate unique Message-ID for user."
1345   ;; Message-ID should not contain a slash and should be terminated by
1346   ;; a number.  I don't know the reason why it is so.
1347   (concat "<" (gnus-inews-unique-id) "@" (gnus-inews-full-address) ">"))
1348
1349 (defvar gnus-unique-id-char nil)
1350
1351 ;; If you ever change this function, make sure the new version
1352 ;; cannot generate IDs that the old version could.
1353 ;; You might for example insert a "." somewhere (not next to another dot
1354 ;; or string boundary), or modify the newsreader name to "Ding".
1355 (defun gnus-inews-unique-id ()
1356   ;; Don't use microseconds from (current-time), they may be unsupported.
1357   ;; Instead we use this randomly inited counter.
1358   (setq gnus-unique-id-char
1359         (% (1+ (or gnus-unique-id-char (logand (random t) (1- (lsh 1 20)))))
1360            ;; (current-time) returns 16-bit ints,
1361            ;; and 2^16*25 just fits into 4 digits i base 36.
1362            (* 25 25)))
1363   (let ((tm (if (fboundp 'current-time)
1364                 (current-time) '(12191 46742 287898))))
1365     (concat
1366      (if (memq system-type '(ms-dos emx vax-vms))
1367          (let ((user (downcase (gnus-inews-login-name))))
1368            (while (string-match "[^a-z0-9_]" user)
1369              (aset user (match-beginning 0) ?_))
1370            user)
1371        (gnus-number-base36 (user-uid) -1))
1372      (gnus-number-base36 (+ (car   tm) (lsh (% gnus-unique-id-char 25) 16)) 4)
1373      (gnus-number-base36 (+ (nth 1 tm) (lsh (/ gnus-unique-id-char 25) 16)) 4)
1374      ;; Append the newsreader name, because while the generated
1375      ;; ID is unique to this newsreader, other newsreaders might
1376      ;; otherwise generate the same ID via another algorithm.
1377      ".fsf")))
1378
1379
1380 (defun gnus-inews-date ()
1381   "Current time string."
1382   (timezone-make-date-arpa-standard
1383    (current-time-string) (current-time-zone)))
1384
1385 (defun gnus-inews-organization ()
1386   "Return user's organization.
1387 The ORGANIZATION environment variable is used if defined.
1388 If not, the variable `gnus-local-organization' is used instead.
1389 If it is a function, the function will be called with the current
1390 newsgroup name as the argument.
1391 If this is a file name, the contents of this file will be used as the
1392 organization."
1393   (let* ((organization
1394           (or (getenv "ORGANIZATION")
1395               (if gnus-local-organization
1396                   (if (and (symbolp gnus-local-organization)
1397                            (fboundp gnus-local-organization))
1398                       (funcall gnus-local-organization gnus-newsgroup-name)
1399                     gnus-local-organization))
1400               gnus-organization-file
1401               "~/.organization")))
1402     (and (stringp organization)
1403          (> (length organization) 0)
1404          (or (file-exists-p organization)
1405              (string-match " " organization)
1406              (not (string-match "^/usr/lib/" organization)))
1407          (save-excursion
1408            (gnus-set-work-buffer)
1409            (if (file-exists-p organization)
1410                (insert-file-contents organization)
1411              (insert organization))
1412            (goto-char (point-min))
1413            (while (re-search-forward " *\n *" nil t)
1414              (replace-match " " t t))
1415            (buffer-substring (point-min) (point-max))))))
1416
1417 (defun gnus-inews-lines ()
1418   "Count the number of lines and return numeric string."
1419   (save-excursion
1420     (save-restriction
1421       (widen)
1422       (goto-char (point-min))
1423       (re-search-forward
1424        (concat "^" (regexp-quote mail-header-separator) "$"))
1425       (forward-line 1)
1426       (int-to-string (count-lines (point) (point-max))))))
1427
1428 \f
1429 ;;;
1430 ;;; Gnus Mail Functions
1431 ;;;
1432
1433 ;;; Mail reply commands of Gnus summary mode
1434
1435 (defun gnus-summary-reply (yank &optional yank-articles)
1436   "Reply mail to news author.
1437 If prefix argument YANK is non-nil, original article is yanked automatically.
1438 Customize the variable gnus-mail-reply-method to use another mailer."
1439   (interactive "P")
1440   ;; Bug fix by jbw@bigbird.bu.edu (Joe Wells)
1441   ;; Stripping headers should be specified with mail-yank-ignored-headers.
1442   (gnus-set-global-variables)
1443   (if yank-articles (gnus-summary-goto-subject (car yank-articles)))
1444   (gnus-summary-select-article)
1445   (let ((gnus-newsgroup-name gnus-newsgroup-name))
1446     (bury-buffer gnus-article-buffer)
1447     (funcall gnus-mail-reply-method (or yank-articles (not (not yank))))))
1448
1449 (defun gnus-summary-reply-with-original (n)
1450   "Reply mail to news author with original article.
1451 Customize the variable gnus-mail-reply-method to use another mailer."
1452   (interactive "P")
1453   (gnus-summary-reply t (gnus-summary-work-articles n)))
1454
1455 (defun gnus-summary-mail-forward (post)
1456   "Forward the current message to another user.
1457 Customize the variable gnus-mail-forward-method to use another mailer."
1458   (interactive "P")
1459   (gnus-set-global-variables)
1460   (gnus-summary-select-article)
1461   (gnus-copy-article-buffer)
1462   (let ((gnus-newsgroup-name gnus-newsgroup-name))
1463     (if post
1464         (gnus-forward-using-post gnus-article-copy)
1465       (funcall gnus-mail-forward-method gnus-article-copy))))
1466
1467 (defun gnus-summary-post-forward ()
1468   "Forward the current article to a newsgroup."
1469   (interactive)
1470   (gnus-summary-mail-forward t))
1471
1472 (defvar gnus-nastygram-message
1473   "The following article was inappropriately posted to %s.\n"
1474   "Format string to insert in nastygrams.
1475 The current group name will be inserted at \"%s\".")
1476
1477 (defun gnus-summary-mail-nastygram (n)
1478   "Send a nastygram to the author of the current article."
1479   (interactive "P")
1480   (if (or gnus-expert-user
1481           (gnus-y-or-n-p
1482            "Really send a nastygram to the author of the current article? "))
1483       (let ((group gnus-newsgroup-name))
1484         (gnus-summary-reply-with-original n)
1485         (set-buffer gnus-mail-buffer)
1486         (insert (format gnus-nastygram-message group))
1487         (gnus-mail-send-and-exit))))
1488
1489 (defun gnus-summary-mail-other-window ()
1490   "Compose mail in other window.
1491 Customize the variable `gnus-mail-other-window-method' to use another
1492 mailer."
1493   (interactive)
1494   (gnus-set-global-variables)
1495   (let ((gnus-newsgroup-name gnus-newsgroup-name))
1496     (funcall gnus-mail-other-window-method)))
1497
1498 (defun gnus-mail-reply-using-mail (&optional yank to-address)
1499   (save-excursion
1500     (set-buffer gnus-summary-buffer)
1501     (let ((group (gnus-group-real-name gnus-newsgroup-name))
1502           (cur (cons (current-buffer) (cdr gnus-article-current)))
1503           (winconf (current-window-configuration))
1504           from subject date reply-to message-of
1505           references message-id sender follow-to sendto elt)
1506       (set-buffer (get-buffer-create gnus-mail-buffer))
1507       (mail-mode)
1508       (make-local-variable 'gnus-article-reply)
1509       (setq gnus-article-reply cur)
1510       (make-local-variable 'gnus-prev-winconf)
1511       (setq gnus-prev-winconf winconf)
1512       (if (and (buffer-modified-p)
1513                (> (buffer-size) 0)
1514                (not (gnus-y-or-n-p
1515                      "Unsent article being composed; erase it? ")))
1516           ()
1517         (erase-buffer)
1518         (save-excursion
1519           (gnus-copy-article-buffer)
1520           (save-restriction
1521             (set-buffer gnus-article-copy)
1522             (gnus-narrow-to-headers)
1523             (if (and (boundp 'gnus-reply-to-function)
1524                      gnus-reply-to-function)
1525                 (setq follow-to (funcall gnus-reply-to-function group)))
1526             (setq from (mail-fetch-field "from"))
1527             (setq date (or (mail-fetch-field "date")
1528                            (mail-header-date gnus-current-headers)))
1529             (and from
1530                  (let ((stop-pos
1531                         (string-match "  *at \\|  *@ \\| *(\\| *<" from)))
1532                    (setq message-of
1533                          (concat (if stop-pos (substring from 0 stop-pos) from)
1534                                  "'s message of " date))))
1535             (setq sender (mail-fetch-field "sender"))
1536             (setq subject (or (mail-fetch-field "subject")
1537                               "Re: none"))
1538             (or (string-match "^[Rr][Ee]:" subject)
1539                 (setq subject (concat "Re: " subject)))
1540             (setq reply-to (mail-fetch-field "reply-to"))
1541             (setq references (mail-fetch-field "references"))
1542             (setq message-id (mail-fetch-field "message-id"))
1543             (widen))
1544           (setq news-reply-yank-from (or from "(nobody)")))
1545         (setq news-reply-yank-message-id
1546               (or message-id "(unknown Message-ID)"))
1547
1548         ;; Gather the "to" addresses out of the follow-to list and remove
1549         ;; them as we go.
1550         (if (and follow-to (listp follow-to))
1551             (while (setq elt (assoc "To" follow-to))
1552               (setq sendto (concat sendto (and sendto ", ") (cdr elt)))
1553               (setq follow-to (delq elt follow-to))))
1554
1555         (mail-setup (or to-address
1556                         (if (and follow-to (not (stringp follow-to))) sendto
1557                           (or follow-to reply-to from sender "")))
1558                     subject message-of nil gnus-article-copy nil)
1559
1560         (auto-save-mode auto-save-default)
1561         (use-local-map (copy-keymap mail-mode-map))
1562         (local-set-key "\C-c\C-c" 'gnus-mail-send-and-exit)
1563
1564         (if (and follow-to (listp follow-to))
1565             (progn
1566               (goto-char (point-min))
1567               (re-search-forward "^To:" nil t)
1568               (beginning-of-line)
1569               (forward-line 1)
1570               (while follow-to
1571                 (insert (car (car follow-to)) ": " (cdr (car follow-to)) "\n")
1572                 (setq follow-to (cdr follow-to)))))
1573         (nnheader-insert-references references message-id)
1574         (goto-char (point-min))
1575         (re-search-forward
1576          (concat "^" (regexp-quote mail-header-separator) "$"))
1577         (forward-line 1)
1578         (if (not yank)
1579             (gnus-configure-windows 'reply 'force)
1580           (let ((last (point))
1581                 end)
1582             (if (not (listp yank))
1583                 (progn
1584                   (save-excursion
1585                     (mail-yank-original nil))
1586                   (or mail-yank-hooks mail-citation-hook
1587                       (run-hooks 'news-reply-header-hook)))
1588               (while yank
1589                 (save-window-excursion
1590                   (set-buffer gnus-summary-buffer)
1591                   (gnus-summary-select-article nil nil nil (car yank))
1592                   (gnus-summary-remove-process-mark (car yank)))
1593                 (save-excursion
1594                   (gnus-copy-article-buffer)
1595                   (mail-yank-original nil)
1596                   (setq end (point)))
1597                 (or mail-yank-hooks mail-citation-hook
1598                     (run-hooks 'news-reply-header-hook))
1599                 (goto-char end)
1600                 (setq yank (cdr yank))))
1601             (goto-char last))
1602           (gnus-configure-windows 'reply-yank 'force))
1603         (run-hooks 'gnus-mail-hook)))))
1604
1605 (defun gnus-mail-yank-original ()
1606   (interactive)
1607   (save-excursion
1608     (mail-yank-original nil))
1609   (or mail-yank-hooks mail-citation-hook
1610       (run-hooks 'news-reply-header-hook)))
1611
1612 (defun gnus-mail-send-and-exit ()
1613   (interactive)
1614   (let ((reply gnus-article-reply)
1615         (winconf gnus-prev-winconf))
1616     (mail-send-and-exit nil)
1617     (if (get-buffer gnus-group-buffer)
1618         (progn
1619           (if (gnus-buffer-exists-p (car-safe reply))
1620               (progn
1621                 (set-buffer (car reply))
1622                 (and (cdr reply)
1623                      (gnus-summary-mark-article-as-replied
1624                       (cdr reply)))))
1625           (and winconf (set-window-configuration winconf))))))
1626
1627 (defun gnus-forward-make-subject (buffer)
1628   (save-excursion
1629     (set-buffer buffer)
1630     (concat "[" (if (memq 'mail (assoc (symbol-name
1631                                         (car (gnus-find-method-for-group
1632                                               gnus-newsgroup-name)))
1633                                        gnus-valid-select-methods))
1634                     (gnus-fetch-field "From")
1635                   gnus-newsgroup-name)
1636             "] " (or (gnus-fetch-field "Subject") ""))))
1637
1638 (defun gnus-forward-insert-buffer (buffer)
1639   (let ((beg (goto-char (point-max))))
1640     (insert "------- Start of forwarded message -------\n")
1641     (insert-buffer buffer)
1642     (goto-char (point-max))
1643     (insert "------- End of forwarded message -------\n")
1644     ;; Suggested by Sudish Joseph <joseph@cis.ohio-state.edu>.
1645     (goto-char beg)
1646     (while (setq beg (next-single-property-change (point) 'invisible))
1647       (goto-char beg)
1648       (delete-region beg (or (next-single-property-change
1649                               (point) 'invisible)
1650                              (point-max))))))
1651
1652 (defun gnus-mail-forward-using-mail (&optional buffer)
1653   "Forward the current message to another user using mail."
1654   ;; This is almost a carbon copy of rmail-forward in rmail.el.
1655   (let* ((forward-buffer (or buffer (current-buffer)))
1656          (winconf (current-window-configuration))
1657          (subject (gnus-forward-make-subject forward-buffer)))
1658     (set-buffer forward-buffer)
1659     (mail nil nil subject)
1660     (use-local-map (copy-keymap (current-local-map)))
1661     (local-set-key "\C-c\C-c" 'gnus-mail-send-and-exit)
1662     (make-local-variable 'gnus-prev-winconf)
1663     (setq gnus-prev-winconf winconf)
1664     (gnus-forward-insert-buffer forward-buffer)
1665     (goto-char (point-min))
1666     (re-search-forward "^To: " nil t)
1667     (gnus-configure-windows 'mail-forward 'force)
1668     ;; You have a chance to arrange the message.
1669     (run-hooks 'gnus-mail-forward-hook)
1670     (run-hooks 'gnus-mail-hook)))
1671
1672 (defun gnus-forward-using-post (&optional buffer)
1673   (save-excursion
1674     (let* ((forward-buffer (or buffer (current-buffer)))
1675            (subject (gnus-forward-make-subject forward-buffer))
1676            (gnus-newsgroup-name nil))
1677       (gnus-post-news 'post nil nil nil nil subject)
1678       (save-excursion
1679         (gnus-forward-insert-buffer forward-buffer)
1680         ;; You have a chance to arrange the message.
1681         (run-hooks 'gnus-mail-forward-hook)))))
1682
1683 (defun gnus-mail-other-window-using-mail ()
1684   "Compose mail other window using mail."
1685   (let ((winconf (current-window-configuration)))
1686     (mail-other-window nil nil nil nil nil (get-buffer gnus-article-buffer))
1687     (use-local-map (copy-keymap (current-local-map)))
1688     (local-set-key "\C-c\C-c" 'gnus-mail-send-and-exit)
1689     (make-local-variable 'gnus-prev-winconf)
1690     (setq gnus-prev-winconf winconf)
1691     (run-hooks 'gnus-mail-hook)
1692     (gnus-configure-windows 'summary-mail 'force)))
1693
1694 (defun gnus-article-mail (yank)
1695   "Send a reply to the address near point.
1696 If YANK is non-nil, include the original article."
1697   (interactive "P")
1698   (let ((address
1699          (buffer-substring
1700           (save-excursion (re-search-backward "[ \t\n]" nil t) (1+ (point)))
1701           (save-excursion (re-search-forward "[ \t\n]" nil t) (1- (point))))))
1702     (and address
1703          (progn
1704            (switch-to-buffer gnus-summary-buffer)
1705            (funcall gnus-mail-reply-method yank address)))))
1706
1707 (defun gnus-bug ()
1708   "Send a bug report to the Gnus maintainers."
1709   (interactive)
1710   (let ((winconf (current-window-configuration)))
1711     (delete-other-windows)
1712     (switch-to-buffer "*Gnus Help Bug*")
1713     (erase-buffer)
1714     (insert gnus-bug-message)
1715     (goto-char (point-min))
1716     (pop-to-buffer "*Gnus Bug*")
1717     (erase-buffer)
1718     (mail-mode)
1719     (mail-setup gnus-maintainer nil nil nil nil nil)
1720     (auto-save-mode auto-save-default)
1721     (make-local-variable 'gnus-prev-winconf)
1722     (setq gnus-prev-winconf winconf)
1723     (use-local-map (copy-keymap mail-mode-map))
1724     (local-set-key "\C-c\C-c" 'gnus-bug-mail-send-and-exit)
1725     (goto-char (point-min))
1726     (re-search-forward (concat "^" (regexp-quote mail-header-separator) "$"))
1727     (forward-line 1)
1728     (insert (format "%s\n%s\n\n\n\n\n" (gnus-version) (emacs-version)))
1729     (gnus-debug)
1730     (goto-char (point-min))
1731     (search-forward "Subject: " nil t)
1732     (message "")))
1733
1734 (defun gnus-bug-mail-send-and-exit ()
1735   "Send the bug message and exit."
1736   (interactive)
1737   (and (get-buffer "*Gnus Help Bug*")
1738        (kill-buffer "*Gnus Help Bug*"))
1739   (gnus-mail-send-and-exit))
1740
1741 (defun gnus-debug ()
1742   "Attemps to go through the Gnus source file and report what variables have been changed.
1743 The source file has to be in the Emacs load path."
1744   (interactive)
1745   (let ((files '("gnus.el" "gnus-msg.el" "gnus-score.el"))
1746         file dirs expr olist sym)
1747     (message "Please wait while we snoop your variables...")
1748     (sit-for 0)
1749     (save-excursion
1750       (set-buffer (get-buffer-create " *gnus bug info*"))
1751       (buffer-disable-undo (current-buffer))
1752       (while files
1753         (erase-buffer)
1754         (setq dirs load-path)
1755         (while dirs
1756           (if (or (not (car dirs))
1757                   (not (stringp (car dirs)))
1758                   (not (file-exists-p
1759                         (setq file (concat (file-name-as-directory
1760                                             (car dirs)) (car files))))))
1761               (setq dirs (cdr dirs))
1762             (setq dirs nil)
1763             (insert-file-contents file)
1764             (goto-char (point-min))
1765             (or (re-search-forward "^;;* *Internal variables" nil t)
1766                 (error "Malformed sources in file %s" file))
1767             (narrow-to-region (point-min) (point))
1768             (goto-char (point-min))
1769             (while (setq expr (condition-case ()
1770                                   (read (current-buffer)) (error nil)))
1771               (condition-case ()
1772                   (and (eq (car expr) 'defvar)
1773                        (stringp (nth 3 expr))
1774                        (or (not (boundp (nth 1 expr)))
1775                            (not (equal (eval (nth 2 expr))
1776                                        (symbol-value (nth 1 expr)))))
1777                        (setq olist (cons (nth 1 expr) olist)))
1778                 (error nil)))))
1779         (setq files (cdr files)))
1780       (kill-buffer (current-buffer)))
1781     (insert "------------------- Environment follows -------------------\n\n")
1782     (while olist
1783       (if (boundp (car olist))
1784           (insert "(setq " (symbol-name (car olist))
1785                   (if (or (consp (setq sym (symbol-value (car olist))))
1786                           (and (symbolp sym)
1787                                (not (or (eq sym nil)
1788                                         (eq sym t)))))
1789                       " '" " ")
1790                   (prin1-to-string (symbol-value (car olist))) ")\n")
1791         (insert ";; (makeunbound '" (symbol-name (car olist)) ")\n"))
1792       (setq olist (cdr olist)))
1793     (insert "\n\n")
1794     ;; Remove any null chars - they seem to cause trouble for some
1795     ;; mailers. (Byte-compiled output from the stuff above.)
1796     (goto-char (point-min))
1797     (while (re-search-forward "[\000\200]" nil t)
1798       (replace-match "" t t))))
1799
1800 (gnus-ems-redefine)
1801
1802 (provide 'gnus-msg)
1803
1804 ;;; gnus-msg.el ends here