lisp/gnus-msg.el

   1 ;;; gnus-msg.el --- mail and post interface for Gnus
   2
   3 ;; Copyright (C) 1995 Free Software Foundation, Inc.
   4
   5 ;; Author: Masanobu UMEDA <umerin@flab.flab.fujitsu.junet>
   6 ;;      Lars Magne Ingebrigtsen <larsi@ifi.uio.no>
   7 ;; Keywords: news
   8
   9 ;; This file is part of GNU Emacs.
  10
  11 ;; GNU Emacs is free software; you can redistribute it and/or modify
  12 ;; it under the terms of the GNU General Public License as published by
  13 ;; the Free Software Foundation; either version 2, or (at your option)
  14 ;; any later version.
  15
  16 ;; GNU Emacs is distributed in the hope that it will be useful,
  17 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19 ;; GNU General Public License for more details.
  20
  21 ;; You should have received a copy of the GNU General Public License
  22 ;; along with GNU Emacs; see the file COPYING.  If not, write to the
  23 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  24 ;; Boston, MA 02111-1307, USA.
  25
  26 ;;; Commentary:
  27
  28 ;;; Code:
  29
  30 (require 'gnus)
  31 (require 'sendmail)
  32 (require 'gnus-ems)
  33
  34 (defvar gnus-organization-file "/usr/lib/news/organization"
  35   "*Local news organization file.")
  36
  37 (defvar gnus-prepare-article-hook (list 'gnus-inews-insert-signature)
  38   "*A hook called after preparing body, but before preparing header headers.
  39 The default hook (`gnus-inews-insert-signature') inserts a signature
  40 file specified by the variable `gnus-signature-file'.")
  41
  42 (defvar gnus-post-prepare-function nil
  43   "*Function that is run after a post buffer has been prepared.
  44 It is called with the name of the newsgroup that is posted to. It
  45 might be used, for instance, for inserting signatures based on the
  46 newsgroup name. (In that case, `gnus-signature-file' and
  47 `mail-signature' should both be set to nil).")
  48
  49 (defvar gnus-post-prepare-hook nil
  50   "*Hook that is run after a post buffer has been prepared.
  51 If you want to insert the signature, you might put
  52 `gnus-inews-insert-signature' in this hook.")
  53
  54 (defvar gnus-use-followup-to t
  55   "*Specifies what to do with Followup-To header.
  56 If nil, ignore the header. If it is t, use its value, but ignore
  57 `poster'.  If it is the symbol `ask', query the user before posting.
  58 If it is the symbol `use', always use the value.")
  59
  60 (defvar gnus-followup-to-function nil
  61   "*A variable that contains a function that returns a followup address.
  62 The function will be called in the buffer of the article that is being
  63 followed up. The buffer will be narrowed to the headers of the
  64 article. To pick header headers, one might use `mail-fetch-field'.  The
  65 function will be called with the name of the current newsgroup as the
  66 argument.
  67
  68 Here's an example `gnus-followup-to-function':
  69
  70 (setq gnus-followup-to-function
  71       (lambda (group)
  72         (cond ((string= group \"mail.list\")
  73                (or (mail-fetch-field \"sender\")
  74                    (mail-fetch-field \"from\")))
  75               (t
  76                (or (mail-fetch-field \"reply-to\")
  77                    (mail-fetch-field \"from\"))))))")
  78
  79 (defvar gnus-reply-to-function nil
  80   "*A variable that contains a function that returns a reply address.
  81 See the `gnus-followup-to-function' variable for an explanation of how
  82 this variable is used.
  83
  84 This function should return a string that will be used to fill in the
  85 header.  This function may also return a list.  In that case, every
  86 list element should be a cons where the first car should be a string
  87 with the header name, and the cdr should be a string with the header
  88 value.")
  89
  90 (defvar gnus-author-copy (getenv "AUTHORCOPY")
  91   "*Save outgoing articles in this file.
  92 Initialized from the AUTHORCOPY environment variable.
  93
  94 If this variable begins with the character \"|\", outgoing articles
  95 will be piped to the named program. It is possible to save an article
  96 in an MH folder as follows:
  97
  98 \(setq gnus-author-copy \"|/usr/local/lib/mh/rcvstore +Article\")
  99
 100 If the first character is not a pipe, articles are saved using the
 101 function specified by the `gnus-author-copy-saver' variable.")
 102
 103 (defvar gnus-mail-self-blind nil
 104   "*Non-nil means insert a BCC header in all outgoing articles.
 105 This will result in having a copy of the article mailed to yourself.
 106 The BCC header is inserted when the post buffer is initialized, so you
 107 can remove or alter the BCC header to override the default.")
 108
 109 (defvar gnus-author-copy-saver (function rmail-output)
 110   "*A function called to save outgoing articles.
 111 This function will be called with the same of the file to store the
 112 article in. The default function is `rmail-output' which saves in Unix
 113 mailbox format.")
 114
 115 (defvar gnus-user-login-name nil
 116   "*The login name of the user.
 117 Got from the function `user-login-name' if undefined.")
 118
 119 (defvar gnus-user-full-name nil
 120   "*The full name of the user.
 121 Got from the NAME environment variable if undefined.")
 122
 123 (defvar gnus-user-from-line nil
 124   "*Your full, complete e-mail address.
 125 Overrides the other Gnus variables if it is non-nil.
 126
 127 Here are two example values of this variable:
 128
 129  \"Lars Magne Ingebrigtsen <larsi@ifi.uio.no>\"
 130
 131 and
 132
 133  \"larsi@ifi.uio.no (Lars Magne Ingebrigtsen)\"
 134
 135 The first version is recommended, but the name has to be quoted if it
 136 contains non-alphanumerical characters.")
 137
 138 (defvar gnus-signature-file "~/.signature"
 139   "*Your signature file.
 140 If the variable is a string that doesn't correspond to a file, the
 141 string itself is inserted.")
 142
 143 (defvar gnus-signature-function nil
 144   "*A function that should return a signature file name.
 145 The function will be called with the name of the newsgroup being
 146 posted to.
 147 If the function returns a string that doesn't correspond to a file, the
 148 string itself is inserted.
 149 If the function returns nil, the `gnus-signature-file' variable will
 150 be used instead.")
 151
 152 (defvar gnus-required-headers
 153   '(From Date Newsgroups Subject Message-ID Organization Lines X-Newsreader)
 154   "*Headers to be generated or prompted for when posting an article.
 155 RFC977 and RFC1036 require From, Date, Newsgroups, Subject,
 156 Message-ID.  Organization, Lines and X-Newsreader are optional.  If
 157 you want Gnus not to insert some header, remove it from this list.")
 158
 159 (defvar gnus-deletable-headers '(Message-ID Date)
 160   "*Headers to be deleted if they already exists and were generated by Gnus previously.")
 161
 162 (defvar gnus-removable-headers '(NNTP-Posting-Host Bcc Xref)
 163   "*Headers to be removed unconditionally before posting.")
 164
 165 (defvar gnus-check-before-posting
 166   '(subject-cmsg multiple-headers sendsys message-id from
 167                  long-lines control-chars size new-text
 168                  signature)
 169   "In non-nil, Gnus will attempt to run some checks on outgoing posts.
 170 If this variable is t, Gnus will check everything it can.  If it is a
 171 list, then those elements in that list will be checked.")
 172
 173 (defvar gnus-delete-supersedes-headers
 174   "^Path:\\|^Date\\|^NNTP-Posting-Host:\\|^Supersedes:"
 175   "*Header lines matching this regexp will be deleted before posting.
 176 It's best to delete old Path and Date headers before posting to avoid
 177 any confusion.")
 178
 179 (defvar gnus-auto-mail-to-author nil
 180   "*If non-nil, mail the authors of articles a copy of your follow-ups.
 181 If this variable is `ask', the user will be prompted for whether to
 182 mail a copy.  The string given by `gnus-mail-courtesy-message' will be
 183 inserted at the beginning of the mail copy.
 184
 185 Mail is sent using the function specified by the
 186 `gnus-mail-send-method' variable.")
 187
 188 ;; Added by Ethan Bradford <ethanb@ptolemy.astro.washington.edu>.
 189 (defvar gnus-mail-courtesy-message
 190   "The following message is a courtesy copy of an article\nthat has been posted as well.\n\n"
 191   "*This is inserted at the start of a mailed copy of a posted message.
 192 If this variable is nil, no such courtesy message will be added.")
 193
 194 (defvar gnus-mail-reply-method (function gnus-mail-reply-using-mail)
 195   "*Function to compose a reply.
 196 Three pre-made functions are `gnus-mail-reply-using-mail' (sendmail);
 197 `gnus-mail-reply-using-mhe' (MH-E); and `gnus-mail-reply-using-vm'.")
 198
 199 (defvar gnus-mail-forward-method (function gnus-mail-forward-using-mail)
 200   "*Function to forward the current message to another user.
 201 Three pre-made functions are `gnus-mail-forward-using-mail' (sendmail);
 202 `gnus-mail-forward-using-mhe' (MH-E); and `gnus-mail-forward-using-vm'.")
 203
 204 (defvar gnus-mail-other-window-method 'gnus-mail-other-window-using-mail
 205   "*Function to compose mail in the other window.
 206 Three pre-made functions are `gnus-mail-other-window-using-mail'
 207 (sendmail); `gnus-mail-other-window-using-mhe' (MH-E); and
 208 `gnus-mail-other-window-using-vm'.")
 209
 210 (defvar gnus-mail-send-method send-mail-function
 211   "*Function to mail a message which is also being posted as an article.
 212 The message must have To or Cc header.  The default is copied from
 213 the variable `send-mail-function'.")
 214
 215 (defvar gnus-inews-article-function 'gnus-inews-article
 216   "*Function to post an article.")
 217
 218 (defvar gnus-inews-article-hook (list 'gnus-inews-do-fcc)
 219   "*A hook called before finally posting an article.
 220 The default hook (`gnus-inews-do-fcc') does FCC processing (ie. saves
 221 the article to a file).")
 222
 223 (defvar gnus-inews-article-header-hook nil
 224   "*A hook called after inserting the headers in an article to be posted.
 225 The hook is called from the *post-news* buffer, narrowed to the
 226 headers.")
 227
 228 (defvar gnus-mail-hook nil
 229   "*A hook called as the last thing after setting up a mail buffer.")
 230
 231 ;;; Internal variables.
 232
 233 (defvar gnus-post-news-buffer "*post-news*")
 234 (defvar gnus-mail-buffer "*mail*")
 235 (defvar gnus-summary-send-map nil)
 236 (defvar gnus-article-copy nil)
 237 (defvar gnus-reply-subject nil)
 238
 239 (eval-and-compile
 240   (autoload 'gnus-uu-post-news "gnus-uu" nil t)
 241   (autoload 'rmail-output "rmailout"))
 242
 243 \f
 244 ;;;
 245 ;;; Gnus Posting Functions
 246 ;;;
 247
 248 (define-prefix-command 'gnus-summary-send-map)
 249 (define-key gnus-summary-mode-map "S" 'gnus-summary-send-map)
 250 (define-key gnus-summary-send-map "p" 'gnus-summary-post-news)
 251 (define-key gnus-summary-send-map "f" 'gnus-summary-followup)
 252 (define-key gnus-summary-send-map "F" 'gnus-summary-followup-with-original)
 253 (define-key gnus-summary-send-map "b" 'gnus-summary-followup-and-reply)
 254 (define-key gnus-summary-send-map "B" 'gnus-summary-followup-and-reply-with-original)
 255 (define-key gnus-summary-send-map "c" 'gnus-summary-cancel-article)
 256 (define-key gnus-summary-send-map "s" 'gnus-summary-supersede-article)
 257 (define-key gnus-summary-send-map "r" 'gnus-summary-reply)
 258 (define-key gnus-summary-send-map "R" 'gnus-summary-reply-with-original)
 259 (define-key gnus-summary-send-map "m" 'gnus-summary-mail-other-window)
 260 (define-key gnus-summary-send-map "u" 'gnus-uu-post-news)
 261 (define-key gnus-summary-send-map "om" 'gnus-summary-mail-forward)
 262 (define-key gnus-summary-send-map "op" 'gnus-summary-post-forward)
 263 (define-key gnus-summary-send-map "Om" 'gnus-uu-digest-mail-forward)
 264 (define-key gnus-summary-send-map "Op" 'gnus-uu-digest-post-forward)
 265
 266 ;;; Internal functions.
 267
 268 (defun gnus-number-base36 (num len)
 269   (if (if (< len 0) (<= num 0) (= len 0))
 270       ""
 271     (concat (gnus-number-base36 (/ num 36) (1- len))
 272             (char-to-string (aref "zyxwvutsrqponmlkjihgfedcba9876543210"
 273                                   (% num 36))))))
 274
 275 ;;; Post news commands of Gnus group mode and summary mode
 276
 277 (defun gnus-group-mail ()
 278   "Start composing a mail."
 279   (interactive)
 280   (funcall gnus-mail-other-window-method))
 281
 282 (defun gnus-group-post-news ()
 283   "Post an article."
 284   (interactive)
 285   (let ((gnus-newsgroup-name nil))
 286     (gnus-post-news 'post nil nil gnus-article-buffer)))
 287
 288 (defun gnus-summary-post-news ()
 289   "Post an article."
 290   (interactive)
 291   (gnus-set-global-variables)
 292   (gnus-post-news 'post gnus-newsgroup-name))
 293
 294 (defun gnus-summary-followup (yank &optional yank-articles)
 295   "Compose a followup to an article.
 296 If prefix argument YANK is non-nil, original article is yanked automatically."
 297   (interactive "P")
 298   (gnus-set-global-variables)
 299   (if yank-articles (gnus-summary-goto-subject (car yank-articles)))
 300   (save-window-excursion
 301     (gnus-summary-select-article))
 302   (let ((headers (gnus-get-header-by-number (gnus-summary-article-number)))
 303         (gnus-newsgroup-name gnus-newsgroup-name))
 304     ;; Check Followup-To: poster.
 305     (set-buffer gnus-article-buffer)
 306     (if (and gnus-use-followup-to
 307              (string-equal "poster" (gnus-fetch-field "followup-to"))
 308              (or (not (memq gnus-use-followup-to '(t ask)))
 309                  (not (gnus-y-or-n-p
 310                        "Do you want to ignore `Followup-To: poster'? "))))
 311         ;; Mail to the poster.
 312         (gnus-summary-reply yank)
 313       (gnus-post-news nil gnus-newsgroup-name
 314                       headers gnus-article-buffer
 315                       (or yank-articles (not (not yank)))))))
 316
 317 (defun gnus-summary-followup-with-original (n)
 318   "Compose a followup to an article and include the original article."
 319   (interactive "P")
 320   (gnus-summary-followup t (gnus-summary-work-articles n)))
 321
 322 ;; Suggested by Daniel Quinlan <quinlan@best.com>.
 323 (defun gnus-summary-followup-and-reply (yank &optional yank-articles)
 324   "Compose a followup and do an auto mail to author."
 325   (interactive "P")
 326   (gnus-set-global-variables)
 327   (let ((gnus-auto-mail-to-author t))
 328     (gnus-summary-followup yank yank-articles)))
 329
 330 (defun gnus-summary-followup-and-reply-with-original (n)
 331   "Compose a followup, include the original, and do an auto mail to author."
 332   (interactive "P")
 333   (gnus-summary-followup-and-reply t (gnus-summary-work-articles n)))
 334
 335 (defun gnus-summary-cancel-article (n)
 336   "Cancel an article you posted."
 337   (interactive "P")
 338   (gnus-set-global-variables)
 339   (let ((articles (gnus-summary-work-articles n)))
 340     (while articles
 341       (gnus-summary-select-article t nil nil (car articles))
 342       (and (gnus-eval-in-buffer-window gnus-article-buffer (gnus-cancel-news))
 343            (gnus-summary-mark-as-read (car articles) gnus-canceled-mark))
 344       (gnus-summary-remove-process-mark (car articles))
 345       (gnus-article-hide-headers-if-wanted)
 346       (setq articles (cdr articles)))))
 347
 348 (defun gnus-summary-supersede-article ()
 349   "Compose an article that will supersede a previous article.
 350 This is done simply by taking the old article and adding a Supersedes
 351 header line with the old Message-ID."
 352   (interactive)
 353   (gnus-set-global-variables)
 354   (gnus-summary-select-article t)
 355   (if (not
 356        (string-equal
 357         (downcase (mail-strip-quoted-names
 358                    (mail-header-from gnus-current-headers)))
 359         (downcase (mail-strip-quoted-names (gnus-inews-user-name)))))
 360       (error "This article is not yours."))
 361   (save-excursion
 362     (set-buffer gnus-article-buffer)
 363     (let ((buffer-read-only nil))
 364       (goto-char (point-min))
 365       (search-forward "\n\n" nil t)
 366       (if (not (re-search-backward "^Message-ID: " nil t))
 367           (error "No Message-ID in this article"))))
 368   (if (gnus-post-news 'post gnus-newsgroup-name)
 369       (progn
 370         (erase-buffer)
 371         (insert-buffer gnus-article-buffer)
 372         (if (search-forward "\n\n" nil t)
 373             (forward-char -1)
 374           (goto-char (point-max)))
 375         (narrow-to-region (point-min) (point))
 376         (goto-char (point-min))
 377         (and gnus-delete-supersedes-headers
 378              (delete-matching-lines gnus-delete-supersedes-headers))
 379         (goto-char (point-min))
 380         (if (not (re-search-forward "^Message-ID: " nil t))
 381             (error "No Message-ID in this article")
 382           (replace-match "Supersedes: " t t))
 383         (goto-char (point-max))
 384         (insert mail-header-separator)
 385         (widen)
 386         (forward-line 1))))
 387
 388 \f
 389 ;;;###autoload
 390 (defalias 'sendnews 'gnus-post-news)
 391
 392 ;;;###autoload
 393 (defalias 'postnews 'gnus-post-news)
 394
 395 (defun gnus-copy-article-buffer (&optional article-buffer)
 396   ;; make a copy of the article buffer with all text properties removed
 397   ;; this copy is in the buffer gnus-article-copy.
 398   ;; if ARTICLE-BUFFER is nil, gnus-article-buffer is used
 399   ;; this buffer should be passed to all mail/news reply/post routines.
 400   (setq gnus-article-copy (get-buffer-create " *gnus article copy*"))
 401   (buffer-disable-undo gnus-article-copy)
 402   (or (memq gnus-article-copy gnus-buffer-list)
 403       (setq gnus-buffer-list (cons gnus-article-copy gnus-buffer-list)))
 404   (let ((article-buffer (or article-buffer gnus-article-buffer)))
 405     (if (and (get-buffer article-buffer)
 406              (buffer-name (get-buffer article-buffer)))
 407         (save-excursion
 408           (set-buffer article-buffer)
 409           (widen)
 410           (copy-to-buffer gnus-article-copy (point-min) (point-max))
 411           (set-text-properties (point-min) (point-max)
 412                                nil gnus-article-copy)))))
 413
 414 ;;;###autoload
 415 (defun gnus-post-news (post &optional group header article-buffer yank subject)
 416   "Begin editing a new USENET news article to be posted.
 417 Type \\[describe-mode] in the buffer to get a list of commands."
 418   (interactive (list t))
 419   (gnus-copy-article-buffer article-buffer)
 420   (if (or (not gnus-novice-user)
 421           gnus-expert-user
 422           (not (eq 'post
 423                    (nth 1 (assoc
 424                            (format "%s" (car (gnus-find-method-for-group
 425                                               gnus-newsgroup-name)))
 426                            gnus-valid-select-methods))))
 427           (and group
 428                (assq 'to-address
 429                      (nth 5 (nth 2 (gnus-gethash group gnus-newsrc-hashtb)))))
 430           (gnus-y-or-n-p "Are you sure you want to post to all of USENET? "))
 431       (let ((sumart (if (not post)
 432                         (save-excursion
 433                           (set-buffer gnus-summary-buffer)
 434                           (cons (current-buffer) gnus-current-article))))
 435             (from (and header (mail-header-from header)))
 436             (winconf (current-window-configuration))
 437             real-group)
 438         (and gnus-interactive-post
 439              (not gnus-expert-user)
 440              post (not group)
 441              (progn
 442                (setq gnus-newsgroup-name
 443                      (setq group
 444                            (completing-read "Group: " gnus-active-hashtb)))
 445                (or subject
 446                    (setq subject (read-string "Subject: ")))))
 447         (setq mail-reply-buffer gnus-article-copy)
 448
 449         (let ((newsgroup-name (or group gnus-newsgroup-name "")))
 450           (setq real-group (and group (gnus-group-real-name group)))
 451           (setq gnus-post-news-buffer
 452                 (gnus-request-post-buffer
 453                  post real-group subject header gnus-article-copy
 454                  (nth 2 (and group (gnus-gethash group gnus-newsrc-hashtb)))
 455                  (or (cdr (assq 'to-group
 456                                 (nth 5 (nth 2 (gnus-gethash
 457                                                newsgroup-name
 458                                                gnus-newsrc-hashtb)))))
 459                      (if (and (boundp 'gnus-followup-to-function)
 460                               gnus-followup-to-function
 461                               gnus-article-copy)
 462                          (save-excursion
 463                            (set-buffer gnus-article-copy)
 464                            (funcall gnus-followup-to-function group))))
 465                  gnus-use-followup-to))
 466           (if post
 467               (gnus-configure-windows 'post 'force)
 468             (if yank
 469                 (gnus-configure-windows 'followup-yank 'force)
 470               (gnus-configure-windows 'followup 'force)))
 471           (gnus-overload-functions)
 472           (make-local-variable 'gnus-article-reply)
 473           (make-local-variable 'gnus-article-check-size)
 474           (make-local-variable 'gnus-reply-subject)
 475           (setq gnus-reply-subject (and header (mail-header-subject header)))
 476           (setq gnus-article-reply sumart)
 477           ;; Handle `gnus-auto-mail-to-author'.
 478           ;; Suggested by Daniel Quinlan <quinlan@best.com>.
 479           ;; Revised to respect Reply-To by Ulrik Dickow <dickow@nbi.dk>.
 480           (let ((to (and (not post)
 481                          (if (if (eq gnus-auto-mail-to-author 'ask)
 482                                  (y-or-n-p "Also send mail to author? ")
 483                                gnus-auto-mail-to-author)
 484                              (or (save-excursion
 485                                    (set-buffer gnus-article-copy)
 486                                    (gnus-fetch-field "reply-to"))
 487                                  from)))))
 488             (if to
 489                 (if (mail-fetch-field "To")
 490                     (progn
 491                       (beginning-of-line)
 492                       (insert "Cc: " to "\n"))
 493                   (mail-position-on-field "To")
 494                   (insert to))))
 495           ;; Handle author copy using BCC field.
 496           (if (and gnus-mail-self-blind
 497                    (not (mail-fetch-field "bcc")))
 498               (progn
 499                 (mail-position-on-field "Bcc")
 500                 (insert (if (stringp gnus-mail-self-blind)
 501                             gnus-mail-self-blind
 502                           (user-login-name)))))
 503           ;; Handle author copy using FCC field.
 504           (if gnus-author-copy
 505               (progn
 506                 (mail-position-on-field "Fcc")
 507                 (insert gnus-author-copy)))
 508           (goto-char (point-min))
 509           (if post
 510               (cond ((not group)
 511                      (re-search-forward "^Newsgroup:" nil t)
 512                      (end-of-line))
 513                     ((not subject)
 514                      (re-search-forward "^Subject:" nil t)
 515                      (end-of-line))
 516                     (t
 517                      (re-search-forward
 518                       (concat "^" (regexp-quote mail-header-separator) "$"))
 519                      (forward-line 1)))
 520             (re-search-forward
 521              (concat "^" (regexp-quote mail-header-separator) "$"))
 522             (forward-line 1)
 523             (if (not yank)
 524                 ()
 525               (save-excursion
 526                 (if (not (listp yank))
 527                     (news-reply-yank-original nil)
 528                   (setq yank (reverse yank))
 529                   (while yank
 530                     (save-excursion
 531                       (save-window-excursion
 532                         (set-buffer gnus-summary-buffer)
 533                         (gnus-summary-select-article nil nil nil (car yank))
 534                         (gnus-summary-remove-process-mark (car yank)))
 535                       (let ((mail-reply-buffer gnus-article-copy))
 536                         (gnus-copy-article-buffer)
 537                         (let ((news-reply-yank-message-id
 538                                (save-excursion
 539                                  (set-buffer gnus-article-copy)
 540                                  (mail-fetch-field "message-id")))
 541                               (news-reply-yank-from
 542                                (save-excursion
 543                                  (set-buffer gnus-article-copy)
 544                                  (mail-fetch-field "from"))))
 545                           (news-reply-yank-original nil))
 546                         (setq yank (cdr yank)))))))))
 547           (if gnus-post-prepare-function
 548               (funcall gnus-post-prepare-function group))
 549           (run-hooks 'gnus-post-prepare-hook)
 550           (make-local-variable 'gnus-prev-winconf)
 551           (setq gnus-prev-winconf winconf))))
 552   (setq gnus-article-check-size (cons (buffer-size) (gnus-article-checksum)))
 553   (message "")
 554   t)
 555
 556 (defun gnus-inews-news (&optional use-group-method)
 557   "Send a news message.
 558 If given a prefix, and the group is a foreign group, this function
 559 will attempt to use the foreign server to post the article."
 560   (interactive "P")
 561   (or gnus-current-select-method
 562       (setq gnus-current-select-method gnus-select-method))
 563   (let* ((case-fold-search nil)
 564          (server-running (gnus-server-opened gnus-current-select-method))
 565          (reply gnus-article-reply)
 566          error post-result)
 567     (save-excursion
 568       ;; Connect to default NNTP server if necessary.
 569       ;; Suggested by yuki@flab.fujitsu.junet.
 570       (gnus-start-news-server)          ;Use default server.
 571       ;; NNTP server must be opened before current buffer is modified.
 572       (widen)
 573       (goto-char (point-min))
 574       (run-hooks 'news-inews-hook)
 575       (save-restriction
 576         (narrow-to-region
 577          (point-min)
 578          (progn
 579            (goto-char (point-min))
 580            (re-search-forward
 581             (concat "^" (regexp-quote mail-header-separator) "$"))
 582            (match-beginning 0)))
 583
 584         ;; Correct newsgroups field: change sequence of spaces to comma and
 585         ;; eliminate spaces around commas.  Eliminate embedded line breaks.
 586         (goto-char (point-min))
 587         (if (re-search-forward "^Newsgroups: +" nil t)
 588             (save-restriction
 589               (narrow-to-region
 590                (point)
 591                (if (re-search-forward "^[^ \t]" nil t)
 592                    (match-beginning 0)
 593                  (forward-line 1)
 594                  (point)))
 595               (goto-char (point-min))
 596               (while (re-search-forward "\n[ \t]+" nil t)
 597                 (replace-match " " t t)) ;No line breaks (too confusing)
 598               (goto-char (point-min))
 599               (while (re-search-forward "[ \t\n]*,[ \t\n]*\\|[ \t]+" nil t)
 600                 (replace-match "," t t))
 601               (goto-char (point-min))
 602               ;; Remove a trailing comma.
 603               (if (re-search-forward ",$" nil t)
 604                   (replace-match "" t t))))
 605
 606         ;; Added by Per Abrahamsen <abraham@iesd.auc.dk>.
 607         ;; Help save the the world!
 608         (or
 609          gnus-expert-user
 610          (let ((newsgroups (mail-fetch-field "newsgroups"))
 611                (followup-to (mail-fetch-field "followup-to"))
 612                groups to)
 613            (if (and newsgroups
 614                     (string-match "," newsgroups) (not followup-to))
 615                (progn
 616                  (while (string-match "," newsgroups)
 617                    (setq groups
 618                          (cons (list (substring newsgroups
 619                                                 0 (match-beginning 0)))
 620                                groups))
 621                    (setq newsgroups (substring newsgroups (match-end 0))))
 622                  (setq groups (nreverse (cons (list newsgroups) groups)))
 623
 624                  (setq to
 625                        (completing-read "Followups to: (default all groups) "
 626                                         groups))
 627                  (if (> (length to) 0)
 628                      (progn
 629                        (goto-char (point-min))
 630                        (insert "Followup-To: " to "\n")))))))
 631
 632         ;; Cleanup Followup-To.
 633         (goto-char (point-min))
 634         (if (search-forward-regexp "^Followup-To: +" nil t)
 635             (save-restriction
 636               (narrow-to-region
 637                (point)
 638                (if (re-search-forward "^[^ \t]" nil 'end)
 639                    (match-beginning 0)
 640                  (point-max)))
 641               (goto-char (point-min))
 642               (replace-regexp "\n[ \t]+" " ") ;No line breaks (too confusing)
 643               (goto-char (point-min))
 644               (replace-regexp "[ \t\n]*,[ \t\n]*\\|[ \t]+" ",")))
 645
 646         ;; Mail the message too if To:, Bcc:. or Cc: exists.
 647         (let* ((types '("to" "bcc" "cc"))
 648                (ty types)
 649                fcc-line)
 650           (while ty
 651             (or (mail-fetch-field (car ty) nil t)
 652                 (setq types (delete (car ty) types)))
 653             (setq ty (cdr ty)))
 654
 655           (if (not types)
 656               ;; We do not want to send mail.
 657               ()
 658             (if (not gnus-mail-send-method)
 659                 (progn
 660                   (ding)
 661                   (gnus-message
 662                    1 "No mailer defined.  To: and/or Cc: fields ignored.")
 663                   (sit-for 1))
 664               (save-excursion
 665                 ;; We want to remove Fcc, because we want to handle
 666                 ;; that one ourselves...
 667
 668                 (goto-char (point-min))
 669                 (if (re-search-forward "^Fcc: " nil t)
 670                     (progn
 671                       (setq fcc-line
 672                             (buffer-substring
 673                              (progn (beginning-of-line) (point))
 674                              (progn (forward-line 1) (point))))
 675                       (forward-line -1)
 676                       (gnus-delete-line)))
 677
 678                 ;; We generate a Message-ID so that the mail and the
 679                 ;; news copy of the message both get the same ID.
 680                 (or (mail-fetch-field "message-id")
 681                     (not (memq 'Message-ID gnus-required-headers))
 682                     (progn
 683                       (goto-char (point-max))
 684                       (insert "Message-ID: " (gnus-inews-message-id) "\n")))
 685
 686                 (save-restriction
 687                   (widen)
 688                   (gnus-message 5 "Sending via mail...")
 689
 690                   (if (and gnus-mail-courtesy-message
 691                            (or (member "to" types)
 692                                (member "cc" types)))
 693                       ;; We only want to insert the courtesy mail
 694                       ;; message if we use to or cc; bcc should not
 695                       ;; have one. Well, if both bcc and to are
 696                       ;; present, it will get one anyway.
 697                       (progn
 698                         ;; Insert "courtesy" mail message.
 699                         (goto-char (point-min))
 700                         (re-search-forward
 701                          (concat "^" (regexp-quote
 702                                       mail-header-separator) "$"))
 703                         (forward-line 1)
 704                         (insert gnus-mail-courtesy-message)
 705                         (funcall gnus-mail-send-method)
 706                         (goto-char (point-min))
 707                         (search-forward gnus-mail-courtesy-message)
 708                         (replace-match "" t t))
 709                     (funcall gnus-mail-send-method))
 710
 711                   (gnus-message 5 "Sending via mail...done")
 712
 713                   (goto-char (point-min))
 714                   (narrow-to-region
 715                    (point)
 716                    (re-search-forward
 717                     (concat "^" (regexp-quote mail-header-separator) "$")))
 718                   (goto-char (point-min))
 719                   (while (re-search-forward "^BCC:" nil t)
 720                     (delete-region (match-beginning 0)
 721                                    ;; There might be continuation headers.
 722                                    (if (re-search-forward "^[^ \t]" nil t)
 723                                        (match-beginning 0)
 724                                      ;; Uhm... or something like this.
 725                                      (forward-line 1)
 726                                      (point)))))
 727                 (if fcc-line
 728                     (progn
 729                       (goto-char (point-max))
 730                       (insert fcc-line))))))))
 731
 732       ;; Send to server.
 733       (gnus-message 5 "Posting to USENET...")
 734       (setq post-result (funcall gnus-inews-article-function use-group-method))
 735       (cond ((eq post-result 'illegal)
 736              (setq error t)
 737              (ding))
 738             (post-result
 739              (gnus-message 5 "Posting to USENET...done")
 740              (if (gnus-buffer-exists-p (car-safe reply))
 741                  (progn
 742                    (save-excursion
 743                      (set-buffer gnus-summary-buffer)
 744                      (gnus-summary-mark-article-as-replied
 745                       (cdr reply)))))
 746              (set-buffer-modified-p nil))
 747             (t
 748              ;; We cannot signal an error.
 749              (setq error t)
 750              (ding)
 751              (gnus-message 1 "Article rejected: %s"
 752                            (gnus-status-message gnus-select-method)))))
 753     ;; If NNTP server is opened by gnus-inews-news, close it by myself.
 754     (or server-running
 755         (gnus-close-server (gnus-find-method-for-group gnus-newsgroup-name)))
 756     (let ((conf gnus-prev-winconf))
 757       (if (not error)
 758           (progn
 759             (bury-buffer)
 760             ;; Restore last window configuration.
 761             (and conf (set-window-configuration conf)))))))
 762
 763 (defun gnus-inews-check-post ()
 764   "Check whether the post looks ok."
 765   (or
 766    (not gnus-check-before-posting)
 767    (and
 768     ;; We narrow to the headers and check them first.
 769     (save-excursion
 770       (save-restriction
 771         (goto-char (point-min))
 772         (narrow-to-region
 773          (point)
 774          (progn
 775            (re-search-forward
 776             (concat "^" (regexp-quote mail-header-separator) "$"))
 777            (match-beginning 0)))
 778         (goto-char (point-min))
 779         (and
 780          ;; Check for commands in Subject.
 781          (or
 782           (gnus-check-before-posting 'subject-cmsg)
 783           (save-excursion
 784             (if (string-match "^cmsg " (mail-fetch-field "subject"))
 785                 (gnus-y-or-n-p
 786                  "The control code \"cmsg \" is in the subject. Really post? ")
 787               t)))
 788          ;; Check for multiple identical headers.
 789          (or (gnus-check-before-posting 'multiple-headers)
 790              (save-excursion
 791                (let (found)
 792                  (while (and (not found) (re-search-forward "^[^ \t:]+: "
 793                                                             nil t))
 794                    (save-excursion
 795                      (or (re-search-forward
 796                           (concat "^" (setq found
 797                                             (buffer-substring
 798                                              (match-beginning 0)
 799                                              (- (match-end 0) 2))))
 800                           nil t)
 801                          (setq found nil))))
 802                  (if found
 803                      (gnus-y-or-n-p
 804                       (format "Multiple %s headers. Really post? " found))
 805                    t))))
 806          ;; Check for version and sendsys.
 807          (or (gnus-check-before-posting 'sendsys)
 808              (save-excursion
 809                (if (re-search-forward "^Sendsys:\\|^Version:" nil t)
 810                    (gnus-y-or-n-p
 811                     (format "The article contains a %s command. Really post? "
 812                             (buffer-substring (match-beginning 0)
 813                                               (1- (match-end 0)))))
 814                  t)))
 815          ;; Check the Message-Id header.
 816          (or (gnus-check-before-posting 'message-id)
 817              (save-excursion
 818                (let* ((case-fold-search t)
 819                       (message-id (mail-fetch-field "message-id")))
 820                  (or (not message-id)
 821                      (and (string-match "@" message-id)
 822                           (string-match "@[^\\.]*\\." message-id))
 823                      (gnus-y-or-n-p
 824                       (format
 825                        "The Message-ID looks strange: \"%s\". Really post? "
 826                        message-id))))))
 827          ;; Check the From header.
 828          (or (gnus-check-before-posting 'from)
 829              (save-excursion
 830                (let* ((case-fold-search t)
 831                       (from (mail-fetch-field "from")))
 832                  (cond
 833                   ((not from)
 834                    (gnus-y-or-n-p "There is no From line. Really post? "))
 835                   ((not (string-match "@[^\\.]*\\." from))
 836                    (gnus-y-or-n-p
 837                     (format
 838                      "The address looks strange: \"%s\". Really post? " from)))
 839                   ((string-match "(.*).*(.*)" from)
 840                    (gnus-y-or-n-p
 841                     (format
 842                      "The From header looks strange: \"%s\". Really post? "
 843                      from)))
 844                   (t t)))))
 845          )))
 846     ;; Check for long lines.
 847     (or (gnus-check-before-posting 'long-lines)
 848         (save-excursion
 849           (goto-char (point-min))
 850           (re-search-forward
 851            (concat "^" (regexp-quote mail-header-separator) "$"))
 852           (while (and
 853                   (progn
 854                     (end-of-line)
 855                     (< (current-column) 80))
 856                   (zerop (forward-line 1))))
 857           (or (bolp)
 858               (eobp)
 859               (gnus-y-or-n-p
 860                (format
 861                 "You have lines longer than 79 characters.  Really post? ")))))
 862     ;; Check for control characters.
 863     (or (gnus-check-before-posting 'control-chars)
 864         (save-excursion
 865           (if (re-search-forward "[\000-\007\013\015-\037\200-\237]" nil t)
 866               (gnus-y-or-n-p
 867                "The article contains control characters. Really post? ")
 868             t)))
 869     ;; Check excessive size.
 870     (or (gnus-check-before-posting 'size)
 871         (if (> (buffer-size) 60000)
 872             (gnus-y-or-n-p
 873              (format "The article is %d octets long. Really post? "
 874                      (buffer-size)))
 875           t))
 876     ;; Use the (size . checksum) variable to see whether the
 877     ;; article is empty or has only quoted text.
 878     (or
 879      (gnus-check-before-posting 'new-text)
 880      (if (and (= (buffer-size) (car gnus-article-check-size))
 881               (= (gnus-article-checksum) (cdr gnus-article-check-size)))
 882          (gnus-y-or-n-p
 883           "It looks like there's no new text in your article. Really post? ")
 884        t))
 885     ;; Check the length of the signature.
 886     (or (gnus-check-before-posting 'signature)
 887         (progn
 888           (goto-char (point-max))
 889           (if (not (re-search-backward gnus-signature-separator nil t))
 890               t
 891             (if (> (count-lines (point) (point-max)) 5)
 892                 (gnus-y-or-n-p
 893                  (format
 894                   "Your .sig is %d lines; it should be max 4.  Really post? "
 895                   (count-lines (point) (point-max))))
 896               t)))))))
 897
 898 (defun gnus-article-checksum ()
 899   (let ((sum 0))
 900     (save-excursion
 901       (while (not (eobp))
 902         (setq sum (logxor sum (following-char)))
 903         (forward-char 1)))
 904     sum))
 905
 906 ;; Returns non-nil if this type is not to be checked.
 907 (defun gnus-check-before-posting (type)
 908   (not
 909    (or (not gnus-check-before-posting)
 910        (if (listp gnus-check-before-posting)
 911            (memq type gnus-check-before-posting)
 912          t))))
 913
 914 (defun gnus-cancel-news ()
 915   "Cancel an article you posted."
 916   (interactive)
 917   (if (or gnus-expert-user
 918           (gnus-yes-or-no-p "Do you really want to cancel this article? "))
 919       (let ((from nil)
 920             (newsgroups nil)
 921             (message-id nil)
 922             (distribution nil))
 923         (or (gnus-member-of-valid 'post gnus-newsgroup-name)
 924             (error "This backend does not support canceling"))
 925         (save-excursion
 926           ;; Get header info. from original article.
 927           (save-restriction
 928             (gnus-article-show-all-headers)
 929             (goto-char (point-min))
 930             (search-forward "\n\n" nil 'move)
 931             (narrow-to-region (point-min) (point))
 932             (setq from (mail-fetch-field "from"))
 933             (setq newsgroups (mail-fetch-field "newsgroups"))
 934             (setq message-id (mail-fetch-field "message-id"))
 935             (setq distribution (mail-fetch-field "distribution")))
 936           ;; Verify if the article is absolutely user's by comparing
 937           ;; user id with value of its From: field.
 938           (if (not
 939                (string-equal
 940                 (downcase (mail-strip-quoted-names from))
 941                 (downcase (mail-strip-quoted-names (gnus-inews-user-name)))))
 942               (progn
 943                 (ding) (gnus-message 3 "This article is not yours.")
 944                 nil)
 945             ;; Make control article.
 946             (set-buffer (get-buffer-create " *Gnus-canceling*"))
 947             (buffer-disable-undo (current-buffer))
 948             (erase-buffer)
 949             (insert "Newsgroups: " newsgroups "\n"
 950                     "Subject: cancel " message-id "\n"
 951                     "Control: cancel " message-id "\n"
 952                     (if distribution
 953                         (concat "Distribution: " distribution "\n")
 954                       "")
 955                     mail-header-separator "\n"
 956                     "This is a cancel message from " from ".\n")
 957             ;; Send the control article to NNTP server.
 958             (gnus-message 5 "Canceling your article...")
 959             (prog1
 960                 (if (funcall gnus-inews-article-function)
 961                     (gnus-message 5 "Canceling your article...done")
 962                   (progn
 963                     (ding)
 964                     (gnus-message 1 "Cancel failed; %s"
 965                                   (gnus-status-message gnus-newsgroup-name))
 966                     nil)
 967                   t)
 968               ;; Kill the article buffer.
 969               (kill-buffer (current-buffer))))))))
 970
 971 \f
 972 ;;; Lowlevel inews interface
 973
 974 (defun gnus-inews-article (&optional use-group-method)
 975   "Post an article in current buffer using NNTP protocol."
 976   (let ((artbuf (current-buffer))
 977         (tmpbuf (get-buffer-create " *Gnus-posting*")))
 978     (widen)
 979     (goto-char (point-max))
 980     ;; require a newline at the end for inews to append .signature to
 981     (or (= (preceding-char) ?\n)
 982         (insert ?\n))
 983     ;; Prepare article headers.  All message body such as signature
 984     ;; must be inserted before Lines: field is prepared.
 985     (save-restriction
 986       (goto-char (point-min))
 987       (narrow-to-region
 988        (point-min)
 989        (save-excursion
 990          (re-search-forward
 991           (concat "^" (regexp-quote mail-header-separator) "$"))
 992          (match-beginning 0)))
 993       (gnus-inews-remove-headers)
 994       (gnus-inews-insert-headers)
 995       (run-hooks 'gnus-inews-article-header-hook)
 996       (widen))
 997     ;; Check whether the article is a good Net Citizen.
 998     (if (and gnus-article-check-size
 999              (not (gnus-inews-check-post)))
1000         ;; Aber nein!
1001         'illegal
1002       ;; Looks ok, so we do the nasty.
1003       (save-excursion
1004         (set-buffer tmpbuf)
1005         (buffer-disable-undo (current-buffer))
1006         (erase-buffer)
1007         (insert-buffer-substring artbuf)
1008         ;; Remove the header separator.
1009         (goto-char (point-min))
1010         (re-search-forward
1011          (concat "^" (regexp-quote mail-header-separator) "$"))
1012         (replace-match "" t t)
1013         ;; This hook may insert a signature.
1014         (save-excursion
1015           (goto-char (point-min))
1016           (let ((gnus-newsgroup-name (or (mail-fetch-field "newsgroups")
1017                                          gnus-newsgroup-name)))
1018             (run-hooks 'gnus-prepare-article-hook)))
1019         ;; Run final inews hooks.  This hook may do FCC.
1020         ;; The article must be saved before being posted because
1021         ;; `gnus-request-post' modifies the buffer.
1022         (run-hooks 'gnus-inews-article-hook)
1023         ;; Post an article to NNTP server.
1024         ;; Return NIL if post failed.
1025         (prog1
1026             (gnus-request-post
1027              (if use-group-method
1028                  (gnus-find-method-for-group gnus-newsgroup-name)
1029                gnus-select-method) use-group-method)
1030           (kill-buffer (current-buffer)))))))
1031
1032 (defun gnus-inews-remove-headers ()
1033   (let ((case-fold-search t)
1034         (headers gnus-removable-headers))
1035     ;; Remove toxic headers.
1036     (while headers
1037       (goto-char (point-min))
1038       (and (re-search-forward
1039             (concat "^" (downcase (format "%s" (car headers))))
1040             nil t)
1041            (delete-region (progn (beginning-of-line) (point))
1042                           (progn (forward-line 1) (point))))
1043       (setq headers (cdr headers)))))
1044
1045 (defun gnus-inews-insert-headers ()
1046   "Prepare article headers.
1047 Headers already prepared in the buffer are not modified.
1048 Headers in `gnus-required-headers' will be generated."
1049   (let ((Date (gnus-inews-date))
1050         (Message-ID (gnus-inews-message-id))
1051         (Organization (gnus-inews-organization))
1052         (From (gnus-inews-user-name))
1053         (Path (gnus-inews-path))
1054         (Subject nil)
1055         (Newsgroups nil)
1056         (Distribution nil)
1057         (Lines (gnus-inews-lines))
1058         (X-Newsreader gnus-version)
1059         (headers gnus-required-headers)
1060         (case-fold-search t)
1061         header value elem)
1062     ;; First we remove any old generated headers.
1063     (let ((headers gnus-deletable-headers))
1064       (while headers
1065         (goto-char (point-min))
1066         (and (re-search-forward
1067               (concat "^" (symbol-name (car headers)) ": *") nil t)
1068              (get-text-property (1+ (match-beginning 0)) 'gnus-deletable)
1069              (gnus-delete-line))
1070         (setq headers (cdr headers))))
1071     ;; If there are References, and no "Re: ", then the thread has
1072     ;; changed name. See Son-of-1036.
1073     (if (and (mail-fetch-field "references")
1074              (get-buffer gnus-article-buffer))
1075         (let ((psubject (gnus-simplify-subject-re
1076                          (mail-fetch-field "subject"))))
1077           (or (and psubject gnus-reply-subject
1078                    (string= (gnus-simplify-subject-re gnus-reply-subject)
1079                             psubject))
1080               (progn
1081                 (string-match "@" Message-ID)
1082                 (setq Message-ID
1083                       (concat (substring Message-ID 0 (match-beginning 0))
1084                               "_-_"
1085                               (substring Message-ID (match-beginning 0))))))))
1086     ;; Go through all the required headers and see if they are in the
1087     ;; articles already. If they are not, or are empty, they are
1088     ;; inserted automatically - except for Subject, Newsgroups and
1089     ;; Distribution.
1090     (while headers
1091       (goto-char (point-min))
1092       (setq elem (car headers))
1093       (if (consp elem)
1094           (setq header (car elem))
1095         (setq header elem))
1096       (if (or (not (re-search-forward
1097                     (concat "^" (downcase (symbol-name header)) ":") nil t))
1098               (progn
1099                 ;; The header was found. We insert a space after the
1100                 ;; colon, if there is none.
1101                 (if (/= (following-char) ? ) (insert " "))
1102                 ;; Find out whether the header is empty...
1103                 (looking-at "[ \t]*$")))
1104           ;; So we find out what value we should insert.
1105           (progn
1106             (setq value
1107                   (or (if (consp elem)
1108                           ;; The element is a cons.  Either the cdr is
1109                           ;; a string to be inserted verbatim, or it
1110                           ;; is a function, and we insert the value
1111                           ;; returned from this function.
1112                           (or (and (stringp (cdr elem)) (cdr elem))
1113                               (and (fboundp (cdr elem)) (funcall (cdr elem))))
1114                         ;; The element is a symbol.  We insert the
1115                         ;; value of this symbol, if any.
1116                         (and (boundp header) (symbol-value header)))
1117                       ;; We couldn't generate a value for this header,
1118                       ;; so we just ask the user.
1119                       (read-from-minibuffer
1120                        (format "Empty header for %s; enter value: " header))))
1121             ;; Finally insert the header.
1122             (save-excursion
1123               (if (bolp)
1124                   (progn
1125                     (goto-char (point-max))
1126                     (insert (symbol-name header) ": " value "\n")
1127                     (forward-line -1))
1128                 (replace-match value t t))
1129               ;; Add the deletable property to the headers that require it.
1130               (and (memq header gnus-deletable-headers)
1131                    (progn (beginning-of-line) (looking-at "[^:]+: "))
1132                    (add-text-properties
1133                     (point) (match-end 0)
1134                     '(gnus-deletable t face italic) (current-buffer))))))
1135       (setq headers (cdr headers)))
1136     ;; Insert new Sender if the From is strange.
1137     (let ((from (mail-fetch-field "from"))
1138           (sender (mail-fetch-field "sender")))
1139       (if (and from
1140                (not (string=
1141                      (downcase
1142                       (car (cdr (gnus-extract-address-components from))))
1143                      (downcase (gnus-inews-real-user-address))))
1144                (or (null sender)
1145                    (not
1146                     (string=
1147                      (downcase
1148                       (car (cdr (gnus-extract-address-components sender))))
1149                      (downcase (gnus-inews-real-user-address))))))
1150           (progn
1151             (goto-char (point-min))
1152             (and (re-search-forward "^Sender:" nil t)
1153                  (progn
1154                    (beginning-of-line)
1155                    (insert "Original-")
1156                    (beginning-of-line)))
1157             (insert "Sender: " (gnus-inews-real-user-address) "\n"))))))
1158
1159
1160 (defun gnus-inews-insert-signature ()
1161   "Insert a signature file.
1162 If `gnus-signature-function' is bound and returns a string, this
1163 string is used instead of the variable `gnus-signature-file'.
1164 In either case, if the string is a file name, this file is
1165 inserted. If the string is not a file name, the string itself is
1166 inserted.
1167
1168 If you never want any signature inserted, set both of these variables to
1169 nil."
1170   (save-excursion
1171     (let ((signature
1172            (or (and gnus-signature-function
1173                     (funcall gnus-signature-function gnus-newsgroup-name))
1174                gnus-signature-file)))
1175       (if (and signature
1176                (or (file-exists-p signature)
1177                    (string-match " " signature)
1178                    (not (string-match
1179                          "^/[^/]+/" (expand-file-name signature)))))
1180           (progn
1181             (goto-char (point-max))
1182             (if (and mail-signature (search-backward "\n-- \n" nil t))
1183                 ()
1184               ;; Delete any previous signatures.
1185               (if (search-backward "\n-- \n" nil t)
1186                   (delete-region (point) (point-max)))
1187               (or (eolp) (insert "\n"))
1188               (insert "-- \n")
1189               (if (file-exists-p signature)
1190                   (insert-file-contents signature)
1191                 (insert signature))
1192               (goto-char (point-max))
1193               (or (bolp) (insert "\n"))))))))
1194
1195 ;; Written by "Mr. Per Persson" <pp@solace.mh.se>.
1196 (defun gnus-inews-insert-mime-headers ()
1197   (let ((mail-header-separator ""))
1198     (or (mail-position-on-field "Mime-Version")
1199         (insert "1.0")
1200         (cond ((save-excursion
1201                  (beginning-of-buffer)
1202                  (re-search-forward "[\200-\377]" nil t))
1203                (or (mail-position-on-field "Content-Type")
1204                    (insert "text/plain; charset=ISO-8859-1"))
1205                (or (mail-position-on-field "Content-Transfer-Encoding")
1206                    (insert "8bit")))
1207               (t (or (mail-position-on-field "Content-Type")
1208                      (insert "text/plain; charset=US-ASCII"))
1209                  (or (mail-position-on-field "Content-Transfer-Encoding")
1210                      (insert "7bit")))))))
1211
1212 (defun gnus-inews-do-fcc ()
1213   "Process FCC: fields in current article buffer.
1214 Unless the first character of the field is `|', the article is saved
1215 to the specified file using the function specified by the variable
1216 gnus-author-copy-saver.  The default function rmail-output saves in
1217 Unix mailbox format.
1218 If the first character is `|', the contents of the article is send to
1219 a program specified by the rest of the value."
1220   (let ((fcc-list nil)
1221         (fcc-file nil)
1222         (case-fold-search t))           ;Should ignore case.
1223     (save-excursion
1224       (save-restriction
1225         (goto-char (point-min))
1226         (search-forward "\n\n")
1227         (narrow-to-region (point-min) (point))
1228         (goto-char (point-min))
1229         (while (re-search-forward "^FCC:[ \t]*" nil t)
1230           (setq fcc-list
1231                 (cons (buffer-substring
1232                        (point)
1233                        (progn
1234                          (end-of-line)
1235                          (skip-chars-backward " \t")
1236                          (point)))
1237                       fcc-list))
1238           (delete-region (match-beginning 0)
1239                          (progn (forward-line 1) (point))))
1240         ;; Process FCC operations.
1241         (widen)
1242         (while fcc-list
1243           (setq fcc-file (car fcc-list))
1244           (setq fcc-list (cdr fcc-list))
1245           (cond ((string-match "^[ \t]*|[ \t]*\\(.*\\)[ \t]*$" fcc-file)
1246                  (let ((program (substring fcc-file
1247                                            (match-beginning 1) (match-end 1))))
1248                    ;; Suggested by yuki@flab.fujitsu.junet.
1249                    ;; Send article to named program.
1250                    (call-process-region (point-min) (point-max) shell-file-name
1251                                         nil nil nil "-c" program)))
1252                 (t
1253                  ;; Suggested by hyoko@flab.fujitsu.junet.
1254                  ;; Save article in Unix mail format by default.
1255                  (gnus-make-directory (file-name-directory fcc-file))
1256                  (if (and gnus-author-copy-saver
1257                           (not (eq gnus-author-copy-saver 'rmail-output)))
1258                      (funcall gnus-author-copy-saver fcc-file)
1259                    (if (and (file-readable-p fcc-file)
1260                             (mail-file-babyl-p fcc-file))
1261                        (gnus-output-to-rmail fcc-file)
1262                      (rmail-output fcc-file 1 t t))))))))))
1263
1264 (defun gnus-inews-path ()
1265   "Return uucp path."
1266   (let ((login-name (gnus-inews-login-name)))
1267     (cond ((null gnus-use-generic-path)
1268            (concat (nth 1 gnus-select-method) "!" login-name))
1269           ((stringp gnus-use-generic-path)
1270            ;; Support GENERICPATH.  Suggested by vixie@decwrl.dec.com.
1271            (concat gnus-use-generic-path "!" login-name))
1272           (t login-name))))
1273
1274 (defun gnus-inews-user-name ()
1275   "Return user's network address as \"NAME@DOMAIN (FULL-NAME)\"."
1276   (let ((full-name (gnus-inews-full-name))
1277         (address (if (or gnus-user-login-name gnus-use-generic-from
1278                          gnus-local-domain (getenv "DOMAINNAME"))
1279                      (concat (gnus-inews-login-name) "@"
1280                              (gnus-inews-domain-name gnus-use-generic-from))
1281                    user-mail-address)))
1282     (or gnus-user-from-line
1283         (concat address
1284                 ;; User's full name.
1285                 (cond ((string-equal full-name "&") ;Unix hack.
1286                        (concat " (" (user-login-name) ")"))
1287                       ((string-match "[^ ]+@[^ ]+ +(.*)" address)
1288                        "")
1289                       (t
1290                        (concat " (" full-name ")")))))))
1291
1292 (defun gnus-inews-real-user-address ()
1293   "Return the \"real\" user address.
1294 This function tries to ignore all user modifications, and
1295 give as trustworthy answer as possible."
1296   (concat (user-login-name) "@" (gnus-inews-full-address)))
1297
1298 (defun gnus-inews-login-name ()
1299   "Return login name."
1300   (or gnus-user-login-name (getenv "LOGNAME") (user-login-name)))
1301
1302 (defun gnus-inews-full-name ()
1303   "Return full user name."
1304   (or gnus-user-full-name (getenv "NAME") (user-full-name)))
1305
1306 (defun gnus-inews-domain-name (&optional genericfrom)
1307   "Return user's domain name.
1308 If optional argument GENERICFROM is a string, use it as the domain
1309 name; if it is non-nil, strip off local host name from the domain name.
1310 If the function `system-name' returns full internet name and the
1311 domain is undefined, the domain name is got from it."
1312   (if (or genericfrom gnus-local-domain (getenv "DOMAINNAME"))
1313       (let* ((system-name (system-name))
1314              (domain
1315               (or (if (stringp genericfrom) genericfrom)
1316                   (getenv "DOMAINNAME")
1317                   gnus-local-domain
1318                   ;; Function `system-name' may return full internet name.
1319                   ;; Suggested by Mike DeCorte <mrd@sun.soe.clarkson.edu>.
1320                   (if (string-match "\\." system-name)
1321                       (substring system-name (match-end 0)))
1322                   (read-string "Domain name (no host): ")))
1323              (host (or (if (string-match "\\." system-name)
1324                            (substring system-name 0 (match-beginning 0)))
1325                        system-name)))
1326         (if (string-equal "." (substring domain 0 1))
1327             (setq domain (substring domain 1)))
1328         ;; Support GENERICFROM as same as standard Bnews system.
1329         ;; Suggested by ohm@kaba.junet and vixie@decwrl.dec.com.
1330         (cond ((null genericfrom)
1331                (concat host "." domain))
1332               ;;((stringp genericfrom) genericfrom)
1333               (t domain)))
1334     (if (string-match "\\." (system-name))
1335         (system-name)
1336       (substring user-mail-address
1337                  (1+ (string-match "@" user-mail-address))))))
1338
1339 (defun gnus-inews-full-address ()
1340   (let ((domain (gnus-inews-domain-name))
1341         (system (system-name))
1342         (case-fold-search t))
1343     (if (string-match "\\." system) system
1344       (if (string-match (concat "^" (regexp-quote system)) domain) domain
1345         (concat system "." domain)))))
1346
1347 (defun gnus-inews-message-id ()
1348   "Generate unique Message-ID for user."
1349   ;; Message-ID should not contain a slash and should be terminated by
1350   ;; a number.  I don't know the reason why it is so.
1351   (concat "<" (gnus-inews-unique-id) "@" (gnus-inews-full-address) ">"))
1352
1353 (defvar gnus-unique-id-char nil)
1354
1355 ;; If you ever change this function, make sure the new version
1356 ;; cannot generate IDs that the old version could.
1357 ;; You might for example insert a "." somewhere (not next to another dot
1358 ;; or string boundary), or modify the newsreader name to "Ding".
1359 (defun gnus-inews-unique-id ()
1360   ;; Don't use microseconds from (current-time), they may be unsupported.
1361   ;; Instead we use this randomly inited counter.
1362   (setq gnus-unique-id-char
1363         (% (1+ (or gnus-unique-id-char (logand (random t) (1- (lsh 1 20)))))
1364            ;; (current-time) returns 16-bit ints,
1365            ;; and 2^16*25 just fits into 4 digits i base 36.
1366            (* 25 25)))
1367   (let ((tm (if (fboundp 'current-time)
1368                 (current-time) '(12191 46742 287898))))
1369     (concat
1370      (if (memq system-type '(ms-dos emx vax-vms))
1371          (let ((user (downcase (gnus-inews-login-name))))
1372            (while (string-match "[^a-z0-9_]" user)
1373              (aset user (match-beginning 0) ?_))
1374            user)
1375        (gnus-number-base36 (user-uid) -1))
1376      (gnus-number-base36 (+ (car   tm) (lsh (% gnus-unique-id-char 25) 16)) 4)
1377      (gnus-number-base36 (+ (nth 1 tm) (lsh (/ gnus-unique-id-char 25) 16)) 4)
1378      ;; Append the newsreader name, because while the generated
1379      ;; ID is unique to this newsreader, other newsreaders might
1380      ;; otherwise generate the same ID via another algorithm.
1381      ".fsf")))
1382
1383
1384 (defun gnus-inews-date ()
1385   "Current time string."
1386   (timezone-make-date-arpa-standard
1387    (current-time-string) (current-time-zone)))
1388
1389 (defun gnus-inews-organization ()
1390   "Return user's organization.
1391 The ORGANIZATION environment variable is used if defined.
1392 If not, the variable `gnus-local-organization' is used instead.
1393 If it is a function, the function will be called with the current
1394 newsgroup name as the argument.
1395 If this is a file name, the contents of this file will be used as the
1396 organization."
1397   (let* ((organization
1398           (or (getenv "ORGANIZATION")
1399               (if gnus-local-organization
1400                   (if (and (symbolp gnus-local-organization)
1401                            (fboundp gnus-local-organization))
1402                       (funcall gnus-local-organization gnus-newsgroup-name)
1403                     gnus-local-organization))
1404               gnus-organization-file
1405               "~/.organization")))
1406     (and (stringp organization)
1407          (> (length organization) 0)
1408          (or (file-exists-p organization)
1409              (string-match " " organization)
1410              (not (string-match "^/usr/lib/" organization)))
1411          (save-excursion
1412            (gnus-set-work-buffer)
1413            (if (file-exists-p organization)
1414                (insert-file-contents organization)
1415              (insert organization))
1416            (goto-char (point-min))
1417            (while (re-search-forward " *\n *" nil t)
1418              (replace-match " " t t))
1419            (buffer-substring (point-min) (point-max))))))
1420
1421 (defun gnus-inews-lines ()
1422   "Count the number of lines and return numeric string."
1423   (save-excursion
1424     (save-restriction
1425       (widen)
1426       (goto-char (point-min))
1427       (re-search-forward
1428        (concat "^" (regexp-quote mail-header-separator) "$"))
1429       (forward-line 1)
1430       (int-to-string (count-lines (point) (point-max))))))
1431
1432 \f
1433 ;;;
1434 ;;; Gnus Mail Functions
1435 ;;;
1436
1437 ;;; Mail reply commands of Gnus summary mode
1438
1439 (defun gnus-summary-reply (yank &optional yank-articles)
1440   "Reply mail to news author.
1441 If prefix argument YANK is non-nil, original article is yanked automatically.
1442 Customize the variable gnus-mail-reply-method to use another mailer."
1443   (interactive "P")
1444   ;; Bug fix by jbw@bigbird.bu.edu (Joe Wells)
1445   ;; Stripping headers should be specified with mail-yank-ignored-headers.
1446   (gnus-set-global-variables)
1447   (if yank-articles (gnus-summary-goto-subject (car yank-articles)))
1448   (gnus-summary-select-article)
1449   (let ((gnus-newsgroup-name gnus-newsgroup-name))
1450     (bury-buffer gnus-article-buffer)
1451     (funcall gnus-mail-reply-method (or yank-articles (not (not yank))))))
1452
1453 (defun gnus-summary-reply-with-original (n)
1454   "Reply mail to news author with original article.
1455 Customize the variable gnus-mail-reply-method to use another mailer."
1456   (interactive "P")
1457   (gnus-summary-reply t (gnus-summary-work-articles n)))
1458
1459 (defun gnus-summary-mail-forward (post)
1460   "Forward the current message to another user.
1461 Customize the variable gnus-mail-forward-method to use another mailer."
1462   (interactive "P")
1463   (gnus-set-global-variables)
1464   (gnus-summary-select-article)
1465   (gnus-copy-article-buffer)
1466   (let ((gnus-newsgroup-name gnus-newsgroup-name))
1467     (if post
1468         (gnus-forward-using-post gnus-article-copy)
1469       (funcall gnus-mail-forward-method gnus-article-copy))))
1470
1471 (defun gnus-summary-post-forward ()
1472   "Forward the current article to a newsgroup."
1473   (interactive)
1474   (gnus-summary-mail-forward t))
1475
1476 (defvar gnus-nastygram-message
1477   "The following article was inappropriately posted to %s.\n"
1478   "Format string to insert in nastygrams.
1479 The current group name will be inserted at \"%s\".")
1480
1481 (defun gnus-summary-mail-nastygram (n)
1482   "Send a nastygram to the author of the current article."
1483   (interactive "P")
1484   (if (or gnus-expert-user
1485           (gnus-y-or-n-p
1486            "Really send a nastygram to the author of the current article? "))
1487       (let ((group gnus-newsgroup-name))
1488         (gnus-summary-reply-with-original n)
1489         (set-buffer gnus-mail-buffer)
1490         (insert (format gnus-nastygram-message group))
1491         (gnus-mail-send-and-exit))))
1492
1493 (defun gnus-summary-mail-other-window ()
1494   "Compose mail in other window.
1495 Customize the variable `gnus-mail-other-window-method' to use another
1496 mailer."
1497   (interactive)
1498   (gnus-set-global-variables)
1499   (let ((gnus-newsgroup-name gnus-newsgroup-name))
1500     (funcall gnus-mail-other-window-method)))
1501
1502 (defun gnus-mail-reply-using-mail (&optional yank to-address)
1503   (save-excursion
1504     (set-buffer gnus-summary-buffer)
1505     (let ((group (gnus-group-real-name gnus-newsgroup-name))
1506           (cur (cons (current-buffer) (cdr gnus-article-current)))
1507           (winconf (current-window-configuration))
1508           from subject date reply-to message-of
1509           references message-id sender follow-to sendto elt)
1510       (set-buffer (get-buffer-create gnus-mail-buffer))
1511       (mail-mode)
1512       (make-local-variable 'gnus-article-reply)
1513       (setq gnus-article-reply cur)
1514       (make-local-variable 'gnus-prev-winconf)
1515       (setq gnus-prev-winconf winconf)
1516       (if (and (buffer-modified-p)
1517                (> (buffer-size) 0)
1518                (not (gnus-y-or-n-p
1519                      "Unsent article being composed; erase it? ")))
1520           ()
1521         (erase-buffer)
1522         (save-excursion
1523           (gnus-copy-article-buffer)
1524           (save-restriction
1525             (set-buffer gnus-article-copy)
1526             (gnus-narrow-to-headers)
1527             (if (and (boundp 'gnus-reply-to-function)
1528                      gnus-reply-to-function)
1529                 (setq follow-to (funcall gnus-reply-to-function group)))
1530             (setq from (mail-fetch-field "from"))
1531             (setq date (or (mail-fetch-field "date")
1532                            (mail-header-date gnus-current-headers)))
1533             (and from
1534                  (let ((stop-pos
1535                         (string-match "  *at \\|  *@ \\| *(\\| *<" from)))
1536                    (setq message-of
1537                          (concat (if stop-pos (substring from 0 stop-pos) from)
1538                                  "'s message of " date))))
1539             (setq sender (mail-fetch-field "sender"))
1540             (setq subject (or (mail-fetch-field "subject")
1541                               "Re: none"))
1542             (or (string-match "^[Rr][Ee]:" subject)
1543                 (setq subject (concat "Re: " subject)))
1544             (setq reply-to (mail-fetch-field "reply-to"))
1545             (setq references (mail-fetch-field "references"))
1546             (setq message-id (mail-fetch-field "message-id"))
1547             (widen))
1548           (setq news-reply-yank-from (or from "(nobody)")))
1549         (setq news-reply-yank-message-id
1550               (or message-id "(unknown Message-ID)"))
1551
1552         ;; Gather the "to" addresses out of the follow-to list and remove
1553         ;; them as we go.
1554         (if (and follow-to (listp follow-to))
1555             (while (setq elt (assoc "To" follow-to))
1556               (setq sendto (concat sendto (and sendto ", ") (cdr elt)))
1557               (setq follow-to (delq elt follow-to))))
1558
1559         (mail-setup (or to-address
1560                         (if (and follow-to (not (stringp follow-to))) sendto
1561                           (or follow-to reply-to from sender "")))
1562                     subject message-of nil gnus-article-copy nil)
1563
1564         (auto-save-mode auto-save-default)
1565         (use-local-map (copy-keymap (current-local-map)))
1566         (local-set-key "\C-c\C-c" 'gnus-mail-send-and-exit)
1567
1568         (if (and follow-to (listp follow-to))
1569             (progn
1570               (goto-char (point-min))
1571               (re-search-forward "^To:" nil t)
1572               (beginning-of-line)
1573               (forward-line 1)
1574               (while follow-to
1575                 (insert (car (car follow-to)) ": " (cdr (car follow-to)) "\n")
1576                 (setq follow-to (cdr follow-to)))))
1577         (nnheader-insert-references references message-id)
1578         (goto-char (point-min))
1579         (re-search-forward
1580          (concat "^" (regexp-quote mail-header-separator) "$"))
1581         (forward-line 1)
1582         (if (not yank)
1583             (gnus-configure-windows 'reply 'force)
1584           (let ((last (point))
1585                 end)
1586             (if (not (listp yank))
1587                 (progn
1588                   (save-excursion
1589                     (mail-yank-original nil))
1590                   (or mail-yank-hooks mail-citation-hook
1591                       (run-hooks 'news-reply-header-hook)))
1592               (while yank
1593                 (save-window-excursion
1594                   (set-buffer gnus-summary-buffer)
1595                   (gnus-summary-select-article nil nil nil (car yank))
1596                   (gnus-summary-remove-process-mark (car yank)))
1597                 (save-excursion
1598                   (gnus-copy-article-buffer)
1599                   (mail-yank-original nil)
1600                   (setq end (point)))
1601                 (or mail-yank-hooks mail-citation-hook
1602                     (run-hooks 'news-reply-header-hook))
1603                 (goto-char end)
1604                 (setq yank (cdr yank))))
1605             (goto-char last))
1606           (gnus-configure-windows 'reply-yank 'force))
1607         (run-hooks 'gnus-mail-hook)))))
1608
1609 (defun gnus-mail-yank-original ()
1610   (interactive)
1611   (save-excursion
1612     (mail-yank-original nil))
1613   (or mail-yank-hooks mail-citation-hook
1614       (run-hooks 'news-reply-header-hook)))
1615
1616 (defun gnus-mail-send-and-exit ()
1617   (interactive)
1618   (let ((reply gnus-article-reply)
1619         (winconf gnus-prev-winconf))
1620     (mail-send-and-exit nil)
1621     (if (get-buffer gnus-group-buffer)
1622         (progn
1623           (if (gnus-buffer-exists-p (car-safe reply))
1624               (progn
1625                 (set-buffer (car reply))
1626                 (and (cdr reply)
1627                      (gnus-summary-mark-article-as-replied
1628                       (cdr reply)))))
1629           (and winconf (set-window-configuration winconf))))))
1630
1631 (defun gnus-forward-make-subject (buffer)
1632   (save-excursion
1633     (set-buffer buffer)
1634     (concat "[" (if (memq 'mail (assoc (symbol-name
1635                                         (car (gnus-find-method-for-group
1636                                               gnus-newsgroup-name)))
1637                                        gnus-valid-select-methods))
1638                     (gnus-fetch-field "From")
1639                   gnus-newsgroup-name)
1640             "] " (or (gnus-fetch-field "Subject") ""))))
1641
1642 (defun gnus-forward-insert-buffer (buffer)
1643   (let ((beg (goto-char (point-max))))
1644     (insert "------- Start of forwarded message -------\n")
1645     (insert-buffer buffer)
1646     (goto-char (point-max))
1647     (insert "------- End of forwarded message -------\n")
1648     ;; Suggested by Sudish Joseph <joseph@cis.ohio-state.edu>.
1649     (goto-char beg)
1650     (while (setq beg (next-single-property-change (point) 'invisible))
1651       (goto-char beg)
1652       (delete-region beg (or (next-single-property-change
1653                               (point) 'invisible)
1654                              (point-max))))))
1655
1656 (defun gnus-mail-forward-using-mail (&optional buffer)
1657   "Forward the current message to another user using mail."
1658   ;; This is almost a carbon copy of rmail-forward in rmail.el.
1659   (let* ((forward-buffer (or buffer (current-buffer)))
1660          (winconf (current-window-configuration))
1661          (subject (gnus-forward-make-subject forward-buffer)))
1662     (set-buffer forward-buffer)
1663     (mail nil nil subject)
1664     (use-local-map (copy-keymap (current-local-map)))
1665     (local-set-key "\C-c\C-c" 'gnus-mail-send-and-exit)
1666     (make-local-variable 'gnus-prev-winconf)
1667     (setq gnus-prev-winconf winconf)
1668     (gnus-forward-insert-buffer forward-buffer)
1669     (goto-char (point-min))
1670     (re-search-forward "^To: " nil t)
1671     (gnus-configure-windows 'mail-forward 'force)
1672     ;; You have a chance to arrange the message.
1673     (run-hooks 'gnus-mail-forward-hook)
1674     (run-hooks 'gnus-mail-hook)))
1675
1676 (defun gnus-forward-using-post (&optional buffer)
1677   (save-excursion
1678     (let* ((forward-buffer (or buffer (current-buffer)))
1679            (subject (gnus-forward-make-subject forward-buffer))
1680            (gnus-newsgroup-name nil))
1681       (gnus-post-news 'post nil nil nil nil subject)
1682       (save-excursion
1683         (gnus-forward-insert-buffer forward-buffer)
1684         ;; You have a chance to arrange the message.
1685         (run-hooks 'gnus-mail-forward-hook)))))
1686
1687 (defun gnus-mail-other-window-using-mail ()
1688   "Compose mail other window using mail."
1689   (let ((winconf (current-window-configuration)))
1690     (mail-other-window nil nil nil nil nil (get-buffer gnus-article-buffer))
1691     (use-local-map (copy-keymap (current-local-map)))
1692     (local-set-key "\C-c\C-c" 'gnus-mail-send-and-exit)
1693     (make-local-variable 'gnus-prev-winconf)
1694     (setq gnus-prev-winconf winconf)
1695     (run-hooks 'gnus-mail-hook)
1696     (gnus-configure-windows 'summary-mail 'force)))
1697
1698 (defun gnus-article-mail (yank)
1699   "Send a reply to the address near point.
1700 If YANK is non-nil, include the original article."
1701   (interactive "P")
1702   (let ((address
1703          (buffer-substring
1704           (save-excursion (re-search-backward "[ \t\n]" nil t) (1+ (point)))
1705           (save-excursion (re-search-forward "[ \t\n]" nil t) (1- (point))))))
1706     (and address
1707          (progn
1708            (switch-to-buffer gnus-summary-buffer)
1709            (funcall gnus-mail-reply-method yank address)))))
1710
1711 (defun gnus-bug ()
1712   "Send a bug report to the Gnus maintainers."
1713   (interactive)
1714   (let ((winconf (current-window-configuration)))
1715     (delete-other-windows)
1716     (switch-to-buffer "*Gnus Help Bug*")
1717     (erase-buffer)
1718     (insert gnus-bug-message)
1719     (goto-char (point-min))
1720     (pop-to-buffer "*Gnus Bug*")
1721     (erase-buffer)
1722     (mail-mode)
1723     (mail-setup gnus-maintainer nil nil nil nil nil)
1724     (auto-save-mode auto-save-default)
1725     (make-local-variable 'gnus-prev-winconf)
1726     (setq gnus-prev-winconf winconf)
1727     (use-local-map (copy-keymap mail-mode-map))
1728     (local-set-key "\C-c\C-c" 'gnus-bug-mail-send-and-exit)
1729     (goto-char (point-min))
1730     (re-search-forward (concat "^" (regexp-quote mail-header-separator) "$"))
1731     (forward-line 1)
1732     (insert (format "%s\n%s\n\n\n\n\n" (gnus-version) (emacs-version)))
1733     (gnus-debug)
1734     (goto-char (point-min))
1735     (search-forward "Subject: " nil t)
1736     (message "")))
1737
1738 (defun gnus-bug-mail-send-and-exit ()
1739   "Send the bug message and exit."
1740   (interactive)
1741   (and (get-buffer "*Gnus Help Bug*")
1742        (kill-buffer "*Gnus Help Bug*"))
1743   (gnus-mail-send-and-exit))
1744
1745 (defun gnus-debug ()
1746   "Attemps to go through the Gnus source file and report what variables have been changed.
1747 The source file has to be in the Emacs load path."
1748   (interactive)
1749   (let ((files '("gnus.el" "gnus-msg.el" "gnus-score.el"))
1750         file dirs expr olist sym)
1751     (message "Please wait while we snoop your variables...")
1752     (sit-for 0)
1753     (save-excursion
1754       (set-buffer (get-buffer-create " *gnus bug info*"))
1755       (buffer-disable-undo (current-buffer))
1756       (while files
1757         (erase-buffer)
1758         (setq dirs load-path)
1759         (while dirs
1760           (if (or (not (car dirs))
1761                   (not (stringp (car dirs)))
1762                   (not (file-exists-p
1763                         (setq file (concat (file-name-as-directory
1764                                             (car dirs)) (car files))))))
1765               (setq dirs (cdr dirs))
1766             (setq dirs nil)
1767             (insert-file-contents file)
1768             (goto-char (point-min))
1769             (or (re-search-forward "^;;* *Internal variables" nil t)
1770                 (error "Malformed sources in file %s" file))
1771             (narrow-to-region (point-min) (point))
1772             (goto-char (point-min))
1773             (while (setq expr (condition-case ()
1774                                   (read (current-buffer)) (error nil)))
1775               (condition-case ()
1776                   (and (eq (car expr) 'defvar)
1777                        (stringp (nth 3 expr))
1778                        (or (not (boundp (nth 1 expr)))
1779                            (not (equal (eval (nth 2 expr))
1780                                        (symbol-value (nth 1 expr)))))
1781                        (setq olist (cons (nth 1 expr) olist)))
1782                 (error nil)))))
1783         (setq files (cdr files)))
1784       (kill-buffer (current-buffer)))
1785     (insert "------------------- Environment follows -------------------\n\n")
1786     (while olist
1787       (if (boundp (car olist))
1788           (insert "(setq " (symbol-name (car olist))
1789                   (if (or (consp (setq sym (symbol-value (car olist))))
1790                           (and (symbolp sym)
1791                                (not (or (eq sym nil)
1792                                         (eq sym t)))))
1793                       " '" " ")
1794                   (prin1-to-string (symbol-value (car olist))) ")\n")
1795         (insert ";; (makeunbound '" (symbol-name (car olist)) ")\n"))
1796       (setq olist (cdr olist)))
1797     (insert "\n\n")
1798     ;; Remove any null chars - they seem to cause trouble for some
1799     ;; mailers. (Byte-compiled output from the stuff above.)
1800     (goto-char (point-min))
1801     (while (re-search-forward "[\000\200]" nil t)
1802       (replace-match "" t t))))
1803
1804 (gnus-ems-redefine)
1805
1806 (provide 'gnus-msg)
1807
1808 ;;; gnus-msg.el ends here