lisp/gnus/gnus-msg.el

   1 ;;; gnus-msg.el --- mail and post interface for Gnus
   2
   3 ;; Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
   4 ;;   2004, 2005 Free Software Foundation, Inc.
   5
   6 ;; Author: Masanobu UMEDA <umerin@flab.flab.fujitsu.junet>
   7 ;;      Lars Magne Ingebrigtsen <larsi@gnus.org>
   8 ;; Keywords: news
   9
  10 ;; This file is part of GNU Emacs.
  11
  12 ;; GNU Emacs is free software; you can redistribute it and/or modify
  13 ;; it under the terms of the GNU General Public License as published by
  14 ;; the Free Software Foundation; either version 2, or (at your option)
  15 ;; any later version.
  16
  17 ;; GNU Emacs is distributed in the hope that it will be useful,
  18 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  19 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20 ;; GNU General Public License for more details.
  21
  22 ;; You should have received a copy of the GNU General Public License
  23 ;; along with GNU Emacs; see the file COPYING.  If not, write to the
  24 ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  25 ;; Boston, MA 02110-1301, USA.
  26
  27 ;;; Commentary:
  28
  29 ;;; Code:
  30
  31 (eval-when-compile (require 'cl))
  32
  33 (require 'gnus)
  34 (require 'gnus-ems)
  35 (require 'message)
  36 (require 'gnus-art)
  37 (require 'gnus-util)
  38
  39 (defcustom gnus-post-method 'current
  40   "*Preferred method for posting USENET news.
  41
  42 If this variable is `current' (which is the default), Gnus will use
  43 the \"current\" select method when posting.  If it is `native', Gnus
  44 will use the native select method when posting.
  45
  46 This method will not be used in mail groups and the like, only in
  47 \"real\" newsgroups.
  48
  49 If not `native' nor `current', the value must be a valid method as discussed
  50 in the documentation of `gnus-select-method'.  It can also be a list of
  51 methods.  If that is the case, the user will be queried for what select
  52 method to use when posting."
  53   :group 'gnus-group-foreign
  54   :link '(custom-manual "(gnus)Posting Server")
  55   :type `(choice (const native)
  56                  (const current)
  57                  (sexp :tag "Methods" ,gnus-select-method)))
  58
  59 (defcustom gnus-outgoing-message-group nil
  60   "*All outgoing messages will be put in this group.
  61 If you want to store all your outgoing mail and articles in the group
  62 \"nnml:archive\", you set this variable to that value.  This variable
  63 can also be a list of group names.
  64
  65 If you want to have greater control over what group to put each
  66 message in, you can set this variable to a function that checks the
  67 current newsgroup name and then returns a suitable group name (or list
  68 of names)."
  69   :group 'gnus-message
  70   :type '(choice (const nil)
  71                  (function)
  72                  (string :tag "Group")
  73                  (repeat :tag "List of groups" (string :tag "Group"))))
  74
  75 (defcustom gnus-mailing-list-groups nil
  76   "*If non-nil a regexp matching groups that are really mailing lists.
  77 This is useful when you're reading a mailing list that has been
  78 gatewayed to a newsgroup, and you want to followup to an article in
  79 the group."
  80   :group 'gnus-message
  81   :type '(choice (regexp)
  82                  (const nil)))
  83
  84 (defcustom gnus-add-to-list nil
  85   "*If non-nil, add a `to-list' parameter automatically."
  86   :group 'gnus-message
  87   :type 'boolean)
  88
  89 (defcustom gnus-crosspost-complaint
  90   "Hi,
  91
  92 You posted the article below with the following Newsgroups header:
  93
  94 Newsgroups: %s
  95
  96 The %s group, at least, was an inappropriate recipient
  97 of this message.  Please trim your Newsgroups header to exclude this
  98 group before posting in the future.
  99
 100 Thank you.
 101
 102 "
 103   "Format string to be inserted when complaining about crossposts.
 104 The first %s will be replaced by the Newsgroups header;
 105 the second with the current group name."
 106   :group 'gnus-message
 107   :type 'string)
 108
 109 (defcustom gnus-message-setup-hook nil
 110   "Hook run after setting up a message buffer."
 111   :group 'gnus-message
 112   :type 'hook)
 113
 114 (defcustom gnus-bug-create-help-buffer t
 115   "*Should we create the *Gnus Help Bug* buffer?"
 116   :group 'gnus-message
 117   :type 'boolean)
 118
 119 (defcustom gnus-posting-styles nil
 120   "*Alist of styles to use when posting.
 121 See Info node `(gnus)Posting Styles'."
 122   :group 'gnus-message
 123   :link '(custom-manual "(gnus)Posting Styles")
 124   :type '(repeat (cons (choice (regexp)
 125                                (variable)
 126                                (list (const header)
 127                                      (string :tag "Header")
 128                                      (regexp :tag "Regexp"))
 129                                (function)
 130                                (sexp))
 131                        (repeat (list
 132                                 (choice (const signature)
 133                                         (const signature-file)
 134                                         (const organization)
 135                                         (const address)
 136                                         (const x-face-file)
 137                                         (const name)
 138                                         (const body)
 139                                         (symbol)
 140                                         (string :tag "Header"))
 141                                 (choice (string)
 142                                         (function)
 143                                         (variable)
 144                                         (sexp)))))))
 145
 146 (defcustom gnus-gcc-mark-as-read nil
 147   "If non-nil, automatically mark Gcc articles as read."
 148   :version "22.1"
 149   :group 'gnus-message
 150   :type 'boolean)
 151
 152 (make-obsolete-variable 'gnus-inews-mark-gcc-as-read
 153                         'gnus-gcc-mark-as-read)
 154
 155 (defcustom gnus-gcc-externalize-attachments nil
 156   "Should local-file attachments be included as external parts in Gcc copies?
 157 If it is `all', attach files as external parts;
 158 if a regexp and matches the Gcc group name, attach files as external parts;
 159 if nil, attach files as normal parts."
 160   :version "22.1"
 161   :group 'gnus-message
 162   :type '(choice (const nil :tag "None")
 163                  (const all :tag "Any")
 164                  (string :tag "Regexp")))
 165
 166 (gnus-define-group-parameter
 167  posting-charset-alist
 168  :type list
 169  :function-document
 170  "Return the permitted unencoded charsets for posting of GROUP."
 171  :variable gnus-group-posting-charset-alist
 172  :variable-default
 173   '(("^\\(no\\|fr\\)\\.[^,]*\\(,[ \t\n]*\\(no\\|fr\\)\\.[^,]*\\)*$" iso-8859-1 (iso-8859-1))
 174     ("^\\(fido7\\|relcom\\)\\.[^,]*\\(,[ \t\n]*\\(fido7\\|relcom\\)\\.[^,]*\\)*$" koi8-r (koi8-r))
 175     (message-this-is-mail nil nil)
 176     (message-this-is-news nil t))
 177  :variable-document
 178   "Alist of regexps and permitted unencoded charsets for posting.
 179 Each element of the alist has the form (TEST HEADER BODY-LIST), where
 180 TEST is either a regular expression matching the newsgroup header or a
 181 variable to query,
 182 HEADER is the charset which may be left unencoded in the header (nil
 183 means encode all charsets),
 184 BODY-LIST is a list of charsets which may be encoded using 8bit
 185 content-transfer encoding in the body, or one of the special values
 186 nil (always encode using quoted-printable) or t (always use 8bit).
 187
 188 Note that any value other than nil for HEADER infringes some RFCs, so
 189 use this option with care."
 190  :variable-group gnus-charset
 191  :variable-type
 192  '(repeat (list :tag "Permitted unencoded charsets"
 193                 (choice :tag "Where"
 194                         (regexp :tag "Group")
 195                         (const :tag "Mail message" :value message-this-is-mail)
 196                         (const :tag "News article" :value message-this-is-news))
 197                 (choice :tag "Header"
 198                         (const :tag "None" nil)
 199                         (symbol :tag "Charset"))
 200                 (choice :tag "Body"
 201                         (const :tag "Any" :value t)
 202                         (const :tag "None" :value nil)
 203                         (repeat :tag "Charsets"
 204                                 (symbol :tag "Charset")))))
 205  :parameter-type '(choice :tag "Permitted unencoded charsets"
 206                           :value nil
 207                           (repeat (symbol)))
 208  :parameter-document       "\
 209 List of charsets that are permitted to be unencoded.")
 210
 211 (defcustom gnus-debug-files
 212   '("gnus.el" "gnus-sum.el" "gnus-group.el"
 213     "gnus-art.el" "gnus-start.el" "gnus-async.el"
 214     "gnus-msg.el" "gnus-score.el" "gnus-win.el" "gnus-topic.el"
 215     "gnus-agent.el" "gnus-cache.el" "gnus-srvr.el"
 216     "mm-util.el" "mm-decode.el" "nnmail.el" "message.el")
 217   "Files whose variables will be reported in `gnus-bug'."
 218   :version "22.1"
 219   :group 'gnus-message
 220   :type '(repeat (string :tag "File")))
 221
 222 (defcustom gnus-debug-exclude-variables
 223   '(mm-mime-mule-charset-alist
 224     nnmail-split-fancy message-minibuffer-local-map)
 225   "Variables that should not be reported in `gnus-bug'."
 226   :version "22.1"
 227   :group 'gnus-message
 228   :type '(repeat (symbol :tag "Variable")))
 229
 230 (defcustom gnus-discouraged-post-methods
 231   '(nndraft nnml nnimap nnmaildir nnmh nnfolder nndir)
 232   "A list of back ends that are not used in \"real\" newsgroups.
 233 This variable is used only when `gnus-post-method' is `current'."
 234   :version "22.1"
 235   :group 'gnus-group-foreign
 236   :type '(repeat (symbol :tag "Back end")))
 237
 238 (defcustom gnus-message-replysign
 239   nil
 240   "Automatically sign replies to signed messages.
 241 See also the `mml-default-sign-method' variable."
 242   :group 'gnus-message
 243   :type 'boolean)
 244
 245 (defcustom gnus-message-replyencrypt
 246   nil
 247   "Automatically encrypt replies to encrypted messages.
 248 See also the `mml-default-encrypt-method' variable."
 249   :group 'gnus-message
 250   :type 'boolean)
 251
 252 (defcustom gnus-message-replysignencrypted
 253   t
 254   "Setting this causes automatically encrypted messages to also be signed."
 255   :group 'gnus-message
 256   :type 'boolean)
 257
 258 (defcustom gnus-confirm-mail-reply-to-news nil
 259   "If non-nil, Gnus requests confirmation when replying to news.
 260 This is done because new users often reply by mistake when reading
 261 news.
 262 This can also be a function receiving the group name as the only
 263 parameter which should return non-nil iff a confirmation is needed, or
 264 a regexp, in which case a confirmation is asked for iff the group name
 265 matches the regexp."
 266   :version "22.1"
 267   :group 'gnus-message
 268   :type '(choice (const :tag "No" nil)
 269                  (const :tag "Yes" t)
 270                  (regexp :tag "Iff group matches regexp")
 271                  (function :tag "Iff function evaluates to non-nil")))
 272
 273 (defcustom gnus-confirm-treat-mail-like-news
 274   nil
 275   "If non-nil, Gnus will treat mail like news with regard to confirmation
 276 when replying by mail.  See the `gnus-confirm-mail-reply-to-news' variable
 277 for fine-tuning this.
 278 If nil, Gnus will never ask for confirmation if replying to mail."
 279   :version "22.1"
 280   :group 'gnus-message
 281   :type 'boolean)
 282
 283 (defcustom gnus-summary-resend-default-address t
 284   "If non-nil, Gnus tries to suggest a default address to resend to.
 285 If nil, the address field will always be empty after invoking
 286 `gnus-summary-resend-message'."
 287   :version "22.1"
 288   :group 'gnus-message
 289   :type 'boolean)
 290
 291 ;;; Internal variables.
 292
 293 (defvar gnus-inhibit-posting-styles nil
 294   "Inhibit the use of posting styles.")
 295
 296 (defvar gnus-article-yanked-articles nil)
 297 (defvar gnus-message-buffer "*Mail Gnus*")
 298 (defvar gnus-article-copy nil)
 299 (defvar gnus-check-before-posting nil)
 300 (defvar gnus-last-posting-server nil)
 301 (defvar gnus-message-group-art nil)
 302
 303 (defvar gnus-msg-force-broken-reply-to nil)
 304
 305 (defconst gnus-bug-message
 306   "Sending a bug report to the Gnus Towers.
 307 ========================================
 308
 309 The buffer below is a mail buffer.  When you press `C-c C-c', it will
 310 be sent to the Gnus Bug Exterminators.
 311
 312 The thing near the bottom of the buffer is how the environment
 313 settings will be included in the mail.  Please do not delete that.
 314 They will tell the Bug People what your environment is, so that it
 315 will be easier to locate the bugs.
 316
 317 If you have found a bug that makes Emacs go \"beep\", set
 318 debug-on-error to t (`M-x set-variable RET debug-on-error RET t RET')
 319 and include the backtrace in your bug report.
 320
 321 Please describe the bug in annoying, painstaking detail.
 322
 323 Thank you for your help in stamping out bugs.
 324 ")
 325
 326 (eval-and-compile
 327   (autoload 'gnus-uu-post-news "gnus-uu" nil t)
 328   (autoload 'news-setup "rnewspost")
 329   (autoload 'news-reply-mode "rnewspost")
 330   (autoload 'rmail-dont-reply-to "mail-utils")
 331   (autoload 'rmail-output "rmailout"))
 332
 333 \f
 334 ;;;
 335 ;;; Gnus Posting Functions
 336 ;;;
 337
 338 (gnus-define-keys (gnus-summary-send-map "S" gnus-summary-mode-map)
 339   "p" gnus-summary-post-news
 340   "i" gnus-summary-news-other-window
 341   "f" gnus-summary-followup
 342   "F" gnus-summary-followup-with-original
 343   "c" gnus-summary-cancel-article
 344   "s" gnus-summary-supersede-article
 345   "r" gnus-summary-reply
 346   "y" gnus-summary-yank-message
 347   "R" gnus-summary-reply-with-original
 348   "w" gnus-summary-wide-reply
 349   "W" gnus-summary-wide-reply-with-original
 350   "v" gnus-summary-very-wide-reply
 351   "V" gnus-summary-very-wide-reply-with-original
 352   "n" gnus-summary-followup-to-mail
 353   "N" gnus-summary-followup-to-mail-with-original
 354   "m" gnus-summary-mail-other-window
 355   "u" gnus-uu-post-news
 356   "\M-c" gnus-summary-mail-crosspost-complaint
 357   "Br" gnus-summary-reply-broken-reply-to
 358   "BR" gnus-summary-reply-broken-reply-to-with-original
 359   "om" gnus-summary-mail-forward
 360   "op" gnus-summary-post-forward
 361   "Om" gnus-uu-digest-mail-forward
 362   "Op" gnus-uu-digest-post-forward)
 363
 364 (gnus-define-keys (gnus-send-bounce-map "D" gnus-summary-send-map)
 365   "b" gnus-summary-resend-bounced-mail
 366   ;; "c" gnus-summary-send-draft
 367   "r" gnus-summary-resend-message
 368   "e" gnus-summary-resend-message-edit)
 369
 370 ;;; Internal functions.
 371
 372 (defun gnus-inews-make-draft ()
 373   `(lambda ()
 374      (gnus-inews-make-draft-meta-information
 375       ,gnus-newsgroup-name ',gnus-article-reply)))
 376
 377 (defvar gnus-article-reply nil)
 378 (defmacro gnus-setup-message (config &rest forms)
 379   (let ((winconf (make-symbol "gnus-setup-message-winconf"))
 380         (buffer (make-symbol "gnus-setup-message-buffer"))
 381         (article (make-symbol "gnus-setup-message-article"))
 382         (yanked (make-symbol "gnus-setup-yanked-articles"))
 383         (group (make-symbol "gnus-setup-message-group")))
 384     `(let ((,winconf (current-window-configuration))
 385            (,buffer (buffer-name (current-buffer)))
 386            (,article gnus-article-reply)
 387            (,yanked gnus-article-yanked-articles)
 388            (,group gnus-newsgroup-name)
 389            (message-header-setup-hook
 390             (copy-sequence message-header-setup-hook))
 391            (mbl mml-buffer-list)
 392            (message-mode-hook (copy-sequence message-mode-hook)))
 393        (setq mml-buffer-list nil)
 394        (add-hook 'message-header-setup-hook 'gnus-inews-insert-gcc)
 395        (add-hook 'message-header-setup-hook 'gnus-inews-insert-archive-gcc)
 396        ;; #### FIXME: for a reason that I did not manage to identify yet,
 397        ;; the variable `gnus-newsgroup-name' does not honor a dynamically
 398        ;; scoped or setq'ed value from a caller like `C-u gnus-summary-mail'.
 399        ;; After evaluation of @forms below, it gets the value we actually want
 400        ;; to override, and the posting styles are used. For that reason, I've
 401        ;; added an optional argument to `gnus-configure-posting-styles' to
 402        ;; make sure that the correct value for the group name is used. -- drv
 403        (add-hook 'message-mode-hook
 404                  (if (memq ,config '(reply-yank reply))
 405                      (lambda ()
 406                        (gnus-configure-posting-styles ,group))
 407                    (lambda ()
 408                      ;; There may be an old " *gnus article copy*" buffer.
 409                      (let (gnus-article-copy)
 410                        (gnus-configure-posting-styles ,group)))))
 411        (gnus-pull ',(intern gnus-draft-meta-information-header)
 412                   message-required-headers)
 413        (when (and ,group
 414                   (not (string= ,group "")))
 415          (push (cons
 416                 (intern gnus-draft-meta-information-header)
 417                 (gnus-inews-make-draft))
 418                message-required-headers))
 419        (unwind-protect
 420            (progn
 421              ,@forms)
 422          (gnus-inews-add-send-actions ,winconf ,buffer ,article ,config
 423                                       ,yanked)
 424          (setq gnus-message-buffer (current-buffer))
 425          (set (make-local-variable 'gnus-message-group-art)
 426               (cons ,group ,article))
 427          (set (make-local-variable 'gnus-newsgroup-name) ,group)
 428          (gnus-run-hooks 'gnus-message-setup-hook)
 429          (if (eq major-mode 'message-mode)
 430              (let ((mbl1 mml-buffer-list))
 431                (setq mml-buffer-list mbl)  ;; Global value
 432                (set (make-local-variable 'mml-buffer-list) mbl1);; Local value
 433                (gnus-make-local-hook 'kill-buffer-hook)
 434                (gnus-make-local-hook 'change-major-mode-hook)
 435                (add-hook 'change-major-mode-hook 'mml-destroy-buffers nil t)
 436                (add-hook 'kill-buffer-hook 'mml-destroy-buffers t t))
 437            (mml-destroy-buffers)
 438            (setq mml-buffer-list mbl)))
 439        (message-hide-headers)
 440        (gnus-add-buffer)
 441        (gnus-configure-windows ,config t)
 442        (run-hooks 'post-command-hook)
 443        (set-buffer-modified-p nil))))
 444
 445 (defun gnus-inews-make-draft-meta-information (group article)
 446   (concat "(\"" group "\" "
 447           (if article (number-to-string
 448                        (if (listp article)
 449                            (car article)
 450                          article)) "\"\"")
 451           ")"))
 452
 453 ;;;###autoload
 454 (defun gnus-msg-mail (&optional to subject other-headers continue
 455                                 switch-action yank-action send-actions)
 456   "Start editing a mail message to be sent.
 457 Like `message-mail', but with Gnus paraphernalia, particularly the
 458 Gcc: header for archiving purposes."
 459   (interactive)
 460   (let ((buf (current-buffer))
 461         mail-buf)
 462     (gnus-setup-message 'message
 463       (message-mail to subject other-headers continue
 464                     nil yank-action send-actions))
 465     (when switch-action
 466       (setq mail-buf (current-buffer))
 467       (switch-to-buffer buf)
 468       (apply switch-action mail-buf nil)))
 469   ;; COMPOSEFUNC should return t if succeed.  Undocumented ???
 470   t)
 471
 472 ;;;###autoload
 473 (defun gnus-button-mailto (address)
 474   "Mail to ADDRESS."
 475   (set-buffer (gnus-copy-article-buffer))
 476   (gnus-setup-message 'message
 477     (message-reply address)))
 478
 479 ;;;###autoload
 480 (defun gnus-button-reply (&optional to-address wide)
 481   "Like `message-reply'."
 482   (interactive)
 483   (gnus-setup-message 'message
 484     (message-reply to-address wide)))
 485
 486 ;;;###autoload
 487 (define-mail-user-agent 'gnus-user-agent
 488   'gnus-msg-mail 'message-send-and-exit
 489   'message-kill-buffer 'message-send-hook)
 490
 491 (defun gnus-setup-posting-charset (group)
 492   (let ((alist gnus-group-posting-charset-alist)
 493         (group (or group ""))
 494         elem)
 495     (when group
 496       (catch 'found
 497         (while (setq elem (pop alist))
 498           (when (or (and (stringp (car elem))
 499                          (string-match (car elem) group))
 500                     (and (functionp (car elem))
 501                          (funcall (car elem) group))
 502                     (and (symbolp (car elem))
 503                          (symbol-value (car elem))))
 504             (throw 'found (cons (cadr elem) (caddr elem)))))))))
 505
 506 (defun gnus-inews-add-send-actions (winconf buffer article
 507                                             &optional config yanked)
 508   (gnus-make-local-hook 'message-sent-hook)
 509   (add-hook 'message-sent-hook (if gnus-agent 'gnus-agent-possibly-do-gcc
 510                                  'gnus-inews-do-gcc) nil t)
 511   (when gnus-agent
 512     (gnus-make-local-hook 'message-header-hook)
 513     (add-hook 'message-header-hook 'gnus-agent-possibly-save-gcc nil t))
 514   (setq message-post-method
 515         `(lambda (arg)
 516            (gnus-post-method arg ,gnus-newsgroup-name)))
 517   (setq message-newsreader (setq message-mailer (gnus-extended-version)))
 518   (message-add-action
 519    `(when (gnus-buffer-exists-p ,buffer)
 520       (set-window-configuration ,winconf))
 521    'exit 'postpone 'kill)
 522   (let ((to-be-marked (cond
 523                        (yanked
 524                         (mapcar
 525                          (lambda (x) (if (listp x) (car x) x)) yanked))
 526                        (article (if (listp article) article (list article)))
 527                        (t nil))))
 528     (message-add-action
 529      `(when (gnus-buffer-exists-p ,buffer)
 530         (save-excursion
 531           (set-buffer ,buffer)
 532           ,(when to-be-marked
 533              (if (eq config 'forward)
 534                  `(gnus-summary-mark-article-as-forwarded ',to-be-marked)
 535                `(gnus-summary-mark-article-as-replied ',to-be-marked)))))
 536      'send)))
 537
 538 (put 'gnus-setup-message 'lisp-indent-function 1)
 539 (put 'gnus-setup-message 'edebug-form-spec '(form body))
 540
 541 ;;; Post news commands of Gnus group mode and summary mode
 542
 543 (defun gnus-group-mail (&optional arg)
 544   "Start composing a mail.
 545 If ARG, use the group under the point to find a posting style.
 546 If ARG is 1, prompt for a group name to find the posting style."
 547   (interactive "P")
 548   ;; We can't `let' gnus-newsgroup-name here, since that leads
 549   ;; to local variables leaking.
 550   (let ((group gnus-newsgroup-name)
 551         ;; make sure last viewed article doesn't affect posting styles:
 552         (gnus-article-copy)
 553         (buffer (current-buffer)))
 554     (unwind-protect
 555         (progn
 556           (setq gnus-newsgroup-name
 557                 (if arg
 558                     (if (= 1 (prefix-numeric-value arg))
 559                         (completing-read "Use posting style of group: "
 560                                          gnus-active-hashtb nil
 561                                          (gnus-read-active-file-p))
 562                       (gnus-group-group-name))
 563                   ""))
 564           ;; #### see comment in gnus-setup-message -- drv
 565           (gnus-setup-message 'message (message-mail)))
 566       (save-excursion
 567         (set-buffer buffer)
 568         (setq gnus-newsgroup-name group)))))
 569
 570 (defun gnus-group-news (&optional arg)
 571   "Start composing a news.
 572 If ARG, post to group under point.
 573 If ARG is 1, prompt for group name to post to.
 574
 575 This function prepares a news even when using mail groups.  This is useful
 576 for posting messages to mail groups without actually sending them over the
 577 network.  The corresponding back end must have a 'request-post method."
 578   (interactive "P")
 579   ;; We can't `let' gnus-newsgroup-name here, since that leads
 580   ;; to local variables leaking.
 581   (let ((group gnus-newsgroup-name)
 582         ;; make sure last viewed article doesn't affect posting styles:
 583         (gnus-article-copy)
 584         (buffer (current-buffer)))
 585     (unwind-protect
 586         (progn
 587           (setq gnus-newsgroup-name
 588                 (if arg
 589                     (if (= 1 (prefix-numeric-value arg))
 590                         (completing-read "Use group: "
 591                                          gnus-active-hashtb nil
 592                                          (gnus-read-active-file-p))
 593                       (gnus-group-group-name))
 594                   ""))
 595           ;; #### see comment in gnus-setup-message -- drv
 596           (gnus-setup-message 'message
 597             (message-news (gnus-group-real-name gnus-newsgroup-name))))
 598       (save-excursion
 599         (set-buffer buffer)
 600         (setq gnus-newsgroup-name group)))))
 601
 602 (defun gnus-group-post-news (&optional arg)
 603   "Start composing a message (a news by default).
 604 If ARG, post to group under point.  If ARG is 1, prompt for group name.
 605 Depending on the selected group, the message might be either a mail or
 606 a news."
 607   (interactive "P")
 608   ;; Bind this variable here to make message mode hooks work ok.
 609   (let ((gnus-newsgroup-name
 610          (if arg
 611              (if (= 1 (prefix-numeric-value arg))
 612                  (completing-read "Newsgroup: " gnus-active-hashtb nil
 613                                   (gnus-read-active-file-p))
 614                (gnus-group-group-name))
 615            ""))
 616         ;; make sure last viewed article doesn't affect posting styles:
 617         (gnus-article-copy))
 618     (gnus-post-news 'post gnus-newsgroup-name nil nil nil nil
 619                     (string= gnus-newsgroup-name ""))))
 620
 621 (defun gnus-summary-mail-other-window (&optional arg)
 622   "Start composing a mail in another window.
 623 Use the posting of the current group by default.
 624 If ARG, don't do that.  If ARG is 1, prompt for group name to find the
 625 posting style."
 626   (interactive "P")
 627   ;; We can't `let' gnus-newsgroup-name here, since that leads
 628   ;; to local variables leaking.
 629   (let ((group gnus-newsgroup-name)
 630         ;; make sure last viewed article doesn't affect posting styles:
 631         (gnus-article-copy)
 632         (buffer (current-buffer)))
 633     (unwind-protect
 634         (progn
 635           (setq gnus-newsgroup-name
 636                 (if arg
 637                     (if (= 1 (prefix-numeric-value arg))
 638                         (completing-read "Use group: "
 639                                          gnus-active-hashtb nil
 640                                          (gnus-read-active-file-p))
 641                       "")
 642                   gnus-newsgroup-name))
 643           ;; #### see comment in gnus-setup-message -- drv
 644           (gnus-setup-message 'message (message-mail)))
 645       (save-excursion
 646         (set-buffer buffer)
 647         (setq gnus-newsgroup-name group)))))
 648
 649 (defun gnus-summary-news-other-window (&optional arg)
 650   "Start composing a news in another window.
 651 Post to the current group by default.
 652 If ARG, don't do that.  If ARG is 1, prompt for group name to post to.
 653
 654 This function prepares a news even when using mail groups.  This is useful
 655 for posting messages to mail groups without actually sending them over the
 656 network.  The corresponding back end must have a 'request-post method."
 657   (interactive "P")
 658   ;; We can't `let' gnus-newsgroup-name here, since that leads
 659   ;; to local variables leaking.
 660   (let ((group gnus-newsgroup-name)
 661         ;; make sure last viewed article doesn't affect posting styles:
 662         (gnus-article-copy)
 663         (buffer (current-buffer)))
 664     (unwind-protect
 665         (progn
 666           (setq gnus-newsgroup-name
 667                 (if arg
 668                     (if (= 1 (prefix-numeric-value arg))
 669                         (completing-read "Use group: "
 670                                          gnus-active-hashtb nil
 671                                          (gnus-read-active-file-p))
 672                       "")
 673                   gnus-newsgroup-name))
 674           ;; #### see comment in gnus-setup-message -- drv
 675           (gnus-setup-message 'message
 676             (progn
 677               (message-news (gnus-group-real-name gnus-newsgroup-name))
 678               (set (make-local-variable 'gnus-discouraged-post-methods)
 679                    (delq
 680                     (car (gnus-find-method-for-group gnus-newsgroup-name))
 681                     (copy-sequence gnus-discouraged-post-methods))))))
 682       (save-excursion
 683         (set-buffer buffer)
 684         (setq gnus-newsgroup-name group)))))
 685
 686 (defun gnus-summary-post-news (&optional arg)
 687   "Start composing a message.  Post to the current group by default.
 688 If ARG, don't do that.  If ARG is 1, prompt for a group name to post to.
 689 Depending on the selected group, the message might be either a mail or
 690 a news."
 691   (interactive "P")
 692   ;; Bind this variable here to make message mode hooks work ok.
 693   (let ((gnus-newsgroup-name
 694          (if arg
 695              (if (= 1 (prefix-numeric-value arg))
 696                  (completing-read "Newsgroup: " gnus-active-hashtb nil
 697                                   (gnus-read-active-file-p))
 698                "")
 699            gnus-newsgroup-name))
 700         ;; make sure last viewed article doesn't affect posting styles:
 701         (gnus-article-copy))
 702     (gnus-post-news 'post gnus-newsgroup-name)))
 703
 704
 705 (defun gnus-summary-followup (yank &optional force-news)
 706   "Compose a followup to an article.
 707 If prefix argument YANK is non-nil, the original article is yanked
 708 automatically.
 709 YANK is a list of elements, where the car of each element is the
 710 article number, and the cdr is the string to be yanked."
 711   (interactive
 712    (list (and current-prefix-arg
 713               (gnus-summary-work-articles 1))))
 714   (when yank
 715     (gnus-summary-goto-subject
 716      (if (listp (car yank))
 717          (caar yank)
 718        (car yank))))
 719   (save-window-excursion
 720     (gnus-summary-select-article))
 721   (let ((headers (gnus-summary-article-header (gnus-summary-article-number)))
 722         (gnus-newsgroup-name gnus-newsgroup-name))
 723     ;; Send a followup.
 724     (gnus-post-news nil gnus-newsgroup-name
 725                     headers gnus-article-buffer
 726                     yank nil force-news)
 727     (gnus-summary-handle-replysign)))
 728
 729 (defun gnus-summary-followup-with-original (n &optional force-news)
 730   "Compose a followup to an article and include the original article.
 731 The text in the region will be yanked.  If the region isn't
 732 active, the entire article will be yanked."
 733   (interactive "P")
 734   (gnus-summary-followup (gnus-summary-work-articles n) force-news))
 735
 736 (defun gnus-summary-followup-to-mail (&optional arg)
 737   "Followup to the current mail message via news."
 738   (interactive
 739    (list (and current-prefix-arg
 740               (gnus-summary-work-articles 1))))
 741   (gnus-summary-followup arg t))
 742
 743 (defun gnus-summary-followup-to-mail-with-original (&optional arg)
 744   "Followup to the current mail message via news."
 745   (interactive "P")
 746   (gnus-summary-followup (gnus-summary-work-articles arg) t))
 747
 748 (defun gnus-inews-yank-articles (articles)
 749   (let (beg article yank-string)
 750     (message-goto-body)
 751     (while (setq article (pop articles))
 752       (when (listp article)
 753         (setq yank-string (nth 1 article)
 754               article (nth 0 article)))
 755       (save-window-excursion
 756         (set-buffer gnus-summary-buffer)
 757         (gnus-summary-select-article nil nil nil article)
 758         (gnus-summary-remove-process-mark article))
 759       (gnus-copy-article-buffer nil yank-string)
 760       (let ((message-reply-buffer gnus-article-copy)
 761             (message-reply-headers
 762              ;; The headers are decoded.
 763              (with-current-buffer gnus-article-copy
 764                (save-restriction
 765                  (nnheader-narrow-to-headers)
 766                  (nnheader-parse-naked-head)))))
 767         (message-yank-original)
 768         (setq beg (or beg (mark t))))
 769       (when articles
 770         (insert "\n")))
 771     (push-mark)
 772     (goto-char beg)))
 773
 774 (defun gnus-summary-cancel-article (&optional n symp)
 775   "Cancel an article you posted.
 776 Uses the process-prefix convention.  If given the symbolic
 777 prefix `a', cancel using the standard posting method; if not
 778 post using the current select method."
 779   (interactive (gnus-interactive "P\ny"))
 780   (let ((articles (gnus-summary-work-articles n))
 781         (message-post-method
 782          `(lambda (arg)
 783             (gnus-post-method (eq ',symp 'a) ,gnus-newsgroup-name)))
 784         article)
 785     (while (setq article (pop articles))
 786       (when (gnus-summary-select-article t nil nil article)
 787         (when (gnus-eval-in-buffer-window gnus-original-article-buffer
 788                 (message-cancel-news))
 789           (gnus-summary-mark-as-read article gnus-canceled-mark)
 790           (gnus-cache-remove-article 1))
 791         (gnus-article-hide-headers-if-wanted))
 792       (gnus-summary-remove-process-mark article))))
 793
 794 (defun gnus-summary-supersede-article ()
 795   "Compose an article that will supersede a previous article.
 796 This is done simply by taking the old article and adding a Supersedes
 797 header line with the old Message-ID."
 798   (interactive)
 799   (let ((article (gnus-summary-article-number)))
 800     (gnus-setup-message 'reply-yank
 801       (gnus-summary-select-article t)
 802       (set-buffer gnus-original-article-buffer)
 803       (message-supersede)
 804       (push
 805        `((lambda ()
 806            (when (gnus-buffer-exists-p ,gnus-summary-buffer)
 807              (save-excursion
 808                (set-buffer ,gnus-summary-buffer)
 809                (gnus-cache-possibly-remove-article ,article nil nil nil t)
 810                (gnus-summary-mark-as-read ,article gnus-canceled-mark)))))
 811        message-send-actions))))
 812
 813 \f
 814
 815 (defun gnus-copy-article-buffer (&optional article-buffer yank-string)
 816   ;; make a copy of the article buffer with all text properties removed
 817   ;; this copy is in the buffer gnus-article-copy.
 818   ;; if ARTICLE-BUFFER is nil, gnus-article-buffer is used
 819   ;; this buffer should be passed to all mail/news reply/post routines.
 820   (setq gnus-article-copy (gnus-get-buffer-create " *gnus article copy*"))
 821   (save-excursion
 822     (set-buffer gnus-article-copy)
 823     (mm-enable-multibyte))
 824   (let ((article-buffer (or article-buffer gnus-article-buffer))
 825         end beg)
 826     (if (not (and (get-buffer article-buffer)
 827                   (gnus-buffer-exists-p article-buffer)))
 828         (error "Can't find any article buffer")
 829       (save-excursion
 830         (set-buffer article-buffer)
 831         (let ((gnus-newsgroup-charset (or gnus-article-charset
 832                                           gnus-newsgroup-charset))
 833               (gnus-newsgroup-ignored-charsets
 834                (or gnus-article-ignored-charsets
 835                    gnus-newsgroup-ignored-charsets)))
 836           (save-restriction
 837             ;; Copy over the (displayed) article buffer, delete
 838             ;; hidden text and remove text properties.
 839             (widen)
 840             (copy-to-buffer gnus-article-copy (point-min) (point-max))
 841             (set-buffer gnus-article-copy)
 842             (when yank-string
 843               (message-goto-body)
 844               (delete-region (point) (point-max))
 845               (insert yank-string))
 846             (gnus-article-delete-text-of-type 'annotation)
 847             (gnus-article-delete-text-of-type 'multipart)
 848             (gnus-remove-text-with-property 'gnus-prev)
 849             (gnus-remove-text-with-property 'gnus-next)
 850             (gnus-remove-text-with-property 'gnus-decoration)
 851             (insert
 852              (prog1
 853                  (buffer-substring-no-properties (point-min) (point-max))
 854                (erase-buffer)))
 855             ;; Find the original headers.
 856             (set-buffer gnus-original-article-buffer)
 857             (goto-char (point-min))
 858             (while (looking-at message-unix-mail-delimiter)
 859               (forward-line 1))
 860             (let ((mail-header-separator ""))
 861               (setq beg (point)
 862                     end (or (message-goto-body)
 863                             ;; There may be just a header.
 864                             (point-max))))
 865             ;; Delete the headers from the displayed articles.
 866             (set-buffer gnus-article-copy)
 867             (let ((mail-header-separator ""))
 868               (delete-region (goto-char (point-min))
 869                              (or (message-goto-body) (point-max))))
 870             ;; Insert the original article headers.
 871             (insert-buffer-substring gnus-original-article-buffer beg end)
 872             ;; Decode charsets.
 873             (let ((gnus-article-decode-hook
 874                    (delq 'article-decode-charset
 875                          (copy-sequence gnus-article-decode-hook)))
 876                   (rfc2047-quote-decoded-words-containing-tspecials t))
 877               (run-hooks 'gnus-article-decode-hook)))))
 878       gnus-article-copy)))
 879
 880 (defun gnus-post-news (post &optional group header article-buffer yank subject
 881                             force-news)
 882   (when article-buffer
 883     (gnus-copy-article-buffer))
 884   (let ((gnus-article-reply (and article-buffer (gnus-summary-article-number)))
 885         (gnus-article-yanked-articles yank)
 886         (add-to-list gnus-add-to-list))
 887     (gnus-setup-message (cond (yank 'reply-yank)
 888                               (article-buffer 'reply)
 889                               (t 'message))
 890       (let* ((group (or group gnus-newsgroup-name))
 891              (charset (gnus-group-name-charset nil group))
 892              (pgroup group)
 893              to-address to-group mailing-list to-list
 894              newsgroup-p)
 895         (when group
 896           (setq to-address (gnus-parameter-to-address group)
 897                 to-group (gnus-group-find-parameter group 'to-group)
 898                 to-list (gnus-parameter-to-list group)
 899                 newsgroup-p (gnus-group-find-parameter group 'newsgroup)
 900                 mailing-list (when gnus-mailing-list-groups
 901                                (string-match gnus-mailing-list-groups group))
 902                 group (gnus-group-name-decode (gnus-group-real-name group)
 903                                               charset)))
 904         (if (or (and to-group
 905                      (gnus-news-group-p to-group))
 906                 newsgroup-p
 907                 force-news
 908                 (and (gnus-news-group-p
 909                       (or pgroup gnus-newsgroup-name)
 910                       (or header gnus-current-article))
 911                      (not mailing-list)
 912                      (not to-list)
 913                      (not to-address)))
 914             ;; This is news.
 915             (if post
 916                 (message-news
 917                  (or to-group
 918                      (and (not (gnus-virtual-group-p pgroup)) group)))
 919               (set-buffer gnus-article-copy)
 920               (gnus-msg-treat-broken-reply-to)
 921               (message-followup (if (or newsgroup-p force-news)
 922                                     (if (save-restriction
 923                                           (article-narrow-to-head)
 924                                           (message-fetch-field "newsgroups"))
 925                                         nil
 926                                       "")
 927                                   to-group)))
 928           ;; The is mail.
 929           (if post
 930               (progn
 931                 (message-mail (or to-address to-list))
 932                 ;; Arrange for mail groups that have no `to-address' to
 933                 ;; get that when the user sends off the mail.
 934                 (when (and (not to-list)
 935                            (not to-address)
 936                            add-to-list)
 937                   (push (list 'gnus-inews-add-to-address pgroup)
 938                         message-send-actions)))
 939             (set-buffer gnus-article-copy)
 940             (gnus-msg-treat-broken-reply-to)
 941             (message-wide-reply to-address)))
 942         (when yank
 943           (gnus-inews-yank-articles yank))))))
 944
 945 (defun gnus-msg-treat-broken-reply-to (&optional force)
 946   "Remove the Reply-to header if broken-reply-to."
 947   (when (or force
 948             (gnus-group-find-parameter
 949              gnus-newsgroup-name 'broken-reply-to))
 950     (save-restriction
 951       (message-narrow-to-head)
 952       (message-remove-header "reply-to"))))
 953
 954 (defun gnus-post-method (arg group &optional silent)
 955   "Return the posting method based on GROUP and ARG.
 956 If SILENT, don't prompt the user."
 957   (let ((gnus-post-method (or (gnus-parameter-post-method group)
 958                               gnus-post-method))
 959         (group-method (gnus-find-method-for-group group)))
 960     (cond
 961      ;; If the group-method is nil (which shouldn't happen) we use
 962      ;; the default method.
 963      ((null group-method)
 964       (or (and (listp gnus-post-method) ;If not current/native/nil
 965                (not (listp (car gnus-post-method))) ; and not a list of methods
 966                gnus-post-method)        ;then use it.
 967           gnus-select-method
 968           message-post-method))
 969      ;; We want the inverse of the default
 970      ((and arg (not (eq arg 0)))
 971       (if (eq gnus-post-method 'current)
 972           gnus-select-method
 973         group-method))
 974      ;; We query the user for a post method.
 975      ((or arg
 976           (and (listp gnus-post-method)
 977                (listp (car gnus-post-method))))
 978       (let* ((methods
 979               ;; Collect all methods we know about.
 980               (append
 981                (when (listp gnus-post-method)
 982                  (if (listp (car gnus-post-method))
 983                      gnus-post-method
 984                    (list gnus-post-method)))
 985                gnus-secondary-select-methods
 986                (mapcar 'cdr gnus-server-alist)
 987                (mapcar 'car gnus-opened-servers)
 988                (list gnus-select-method)
 989                (list group-method)))
 990              method-alist post-methods method)
 991         ;; Weed out all mail methods.
 992         (while methods
 993           (setq method (gnus-server-get-method "" (pop methods)))
 994           (when (and (or (gnus-method-option-p method 'post)
 995                          (gnus-method-option-p method 'post-mail))
 996                      (not (member method post-methods)))
 997             (push method post-methods)))
 998         ;; Create a name-method alist.
 999         (setq method-alist
1000               (mapcar
1001                (lambda (m)
1002                  (if (equal (cadr m) "")
1003                      (list (symbol-name (car m)) m)
1004                    (list (concat (cadr m) " (" (symbol-name (car m)) ")") m)))
1005                post-methods))
1006         ;; Query the user.
1007         (cadr
1008          (assoc
1009           (setq gnus-last-posting-server
1010                 (if (and silent
1011                          gnus-last-posting-server)
1012                     ;; Just use the last value.
1013                     gnus-last-posting-server
1014                   (completing-read
1015                    "Posting method: " method-alist nil t
1016                    (cons (or gnus-last-posting-server "") 0))))
1017           method-alist))))
1018      ;; Override normal method.
1019      ((and (eq gnus-post-method 'current)
1020            (not (memq (car group-method) gnus-discouraged-post-methods))
1021            (gnus-get-function group-method 'request-post t))
1022       (assert (not arg))
1023       group-method)
1024      ;; Use gnus-post-method.
1025      ((listp gnus-post-method)          ;A method...
1026       (assert (not (listp (car gnus-post-method)))) ;... not a list of methods.
1027       gnus-post-method)
1028      ;; Use the normal select method (nil or native).
1029      (t gnus-select-method))))
1030
1031 \f
1032
1033 (defun gnus-extended-version ()
1034   "Stringified Gnus version and Emacs version.
1035 See the variable `gnus-user-agent'."
1036   (interactive)
1037   (if (stringp gnus-user-agent)
1038       gnus-user-agent
1039     ;; `gnus-user-agent' is a list:
1040     (let* ((float-output-format nil)
1041            (gnus-v
1042             (when (memq 'gnus gnus-user-agent)
1043               (concat "Gnus/"
1044                       (prin1-to-string (gnus-continuum-version gnus-version) t)
1045                       " (" gnus-version ")")))
1046            (emacs-v (gnus-emacs-version)))
1047       (concat gnus-v (when (and gnus-v emacs-v) " ")
1048               emacs-v))))
1049
1050 \f
1051 ;;;
1052 ;;; Gnus Mail Functions
1053 ;;;
1054
1055 ;;; Mail reply commands of Gnus summary mode
1056
1057 (defun gnus-summary-reply (&optional yank wide very-wide)
1058   "Start composing a mail reply to the current message.
1059 If prefix argument YANK is non-nil, the original article is yanked
1060 automatically.
1061 If WIDE, make a wide reply.
1062 If VERY-WIDE, make a very wide reply."
1063   (interactive
1064    (list (and current-prefix-arg
1065               (gnus-summary-work-articles 1))))
1066   ;; Allow user to require confirmation before replying by mail to the
1067   ;; author of a news article (or mail message).
1068   (when (or
1069             (not (or (gnus-news-group-p gnus-newsgroup-name)
1070                      gnus-confirm-treat-mail-like-news))
1071             (not (cond ((stringp gnus-confirm-mail-reply-to-news)
1072                         (string-match gnus-confirm-mail-reply-to-news
1073                                       gnus-newsgroup-name))
1074                        ((functionp gnus-confirm-mail-reply-to-news)
1075                         (funcall gnus-confirm-mail-reply-to-news gnus-newsgroup-name))
1076                        (t gnus-confirm-mail-reply-to-news)))
1077             (y-or-n-p "Really reply by mail to article author? "))
1078     (let* ((article
1079             (if (listp (car yank))
1080                 (caar yank)
1081               (car yank)))
1082            (gnus-article-reply (or article (gnus-summary-article-number)))
1083            (gnus-article-yanked-articles yank)
1084            (headers ""))
1085       ;; Stripping headers should be specified with mail-yank-ignored-headers.
1086       (when yank
1087         (gnus-summary-goto-subject article))
1088       (gnus-setup-message (if yank 'reply-yank 'reply)
1089         (if (not very-wide)
1090             (gnus-summary-select-article)
1091           (dolist (article very-wide)
1092             (gnus-summary-select-article nil nil nil article)
1093             (save-excursion
1094               (set-buffer (gnus-copy-article-buffer))
1095               (gnus-msg-treat-broken-reply-to)
1096               (save-restriction
1097                 (message-narrow-to-head)
1098                 (setq headers (concat headers (buffer-string)))))))
1099         (set-buffer (gnus-copy-article-buffer))
1100         (gnus-msg-treat-broken-reply-to gnus-msg-force-broken-reply-to)
1101         (save-restriction
1102           (message-narrow-to-head)
1103           (when very-wide
1104             (erase-buffer)
1105             (insert headers))
1106           (goto-char (point-max)))
1107         (mml-quote-region (point) (point-max))
1108         (message-reply nil wide)
1109         (when yank
1110           (gnus-inews-yank-articles yank))
1111         (gnus-summary-handle-replysign)))))
1112
1113 (defun gnus-summary-handle-replysign ()
1114   "Check the various replysign variables and take action accordingly."
1115   (when (or gnus-message-replysign gnus-message-replyencrypt)
1116     (let (signed encrypted)
1117       (save-excursion
1118         (set-buffer gnus-article-buffer)
1119         (setq signed (memq 'signed gnus-article-wash-types))
1120         (setq encrypted (memq 'encrypted gnus-article-wash-types)))
1121       (cond ((and gnus-message-replyencrypt encrypted)
1122              (mml-secure-message mml-default-encrypt-method
1123                                  (if gnus-message-replysignencrypted
1124                                      'signencrypt
1125                                    'encrypt)))
1126             ((and gnus-message-replysign signed)
1127              (mml-secure-message mml-default-sign-method 'sign))))))
1128
1129 (defun gnus-summary-reply-with-original (n &optional wide)
1130   "Start composing a reply mail to the current message.
1131 The original article will be yanked."
1132   (interactive "P")
1133   (gnus-summary-reply (gnus-summary-work-articles n) wide))
1134
1135 (defun gnus-summary-reply-broken-reply-to (&optional yank wide very-wide)
1136   "Like `gnus-summary-reply' except removing reply-to field.
1137 If prefix argument YANK is non-nil, the original article is yanked
1138 automatically.
1139 If WIDE, make a wide reply.
1140 If VERY-WIDE, make a very wide reply."
1141   (interactive
1142    (list (and current-prefix-arg
1143               (gnus-summary-work-articles 1))))
1144   (let ((gnus-msg-force-broken-reply-to t))
1145     (gnus-summary-reply yank wide very-wide)))
1146
1147 (defun gnus-summary-reply-broken-reply-to-with-original (n &optional wide)
1148   "Like `gnus-summary-reply-with-original' except removing reply-to field.
1149 The original article will be yanked."
1150   (interactive "P")
1151   (gnus-summary-reply-broken-reply-to (gnus-summary-work-articles n) wide))
1152
1153 (defun gnus-summary-wide-reply (&optional yank)
1154   "Start composing a wide reply mail to the current message.
1155 If prefix argument YANK is non-nil, the original article is yanked
1156 automatically."
1157   (interactive
1158    (list (and current-prefix-arg
1159               (gnus-summary-work-articles 1))))
1160   (gnus-summary-reply yank t))
1161
1162 (defun gnus-summary-wide-reply-with-original (n)
1163   "Start composing a wide reply mail to the current message.
1164 The original article will be yanked.
1165 Uses the process/prefix convention."
1166   (interactive "P")
1167   (gnus-summary-reply-with-original n t))
1168
1169 (defun gnus-summary-very-wide-reply (&optional yank)
1170   "Start composing a very wide reply mail to the current message.
1171 If prefix argument YANK is non-nil, the original article is yanked
1172 automatically."
1173   (interactive
1174    (list (and current-prefix-arg
1175               (gnus-summary-work-articles 1))))
1176   (gnus-summary-reply yank t (gnus-summary-work-articles yank)))
1177
1178 (defun gnus-summary-very-wide-reply-with-original (n)
1179   "Start composing a very wide reply mail to the current message.
1180 The original article will be yanked."
1181   (interactive "P")
1182   (gnus-summary-reply
1183    (gnus-summary-work-articles n) t (gnus-summary-work-articles n)))
1184
1185 (defun gnus-summary-mail-forward (&optional arg post)
1186   "Forward the current message(s) to another user.
1187 If process marks exist, forward all marked messages;
1188 if ARG is nil, see `message-forward-as-mime' and `message-forward-show-mml';
1189 if ARG is 1, decode the message and forward directly inline;
1190 if ARG is 2, forward message as an rfc822 MIME section;
1191 if ARG is 3, decode message and forward as an rfc822 MIME section;
1192 if ARG is 4, forward message directly inline;
1193 otherwise, use flipped `message-forward-as-mime'.
1194 If POST, post instead of mail.
1195 For the `inline' alternatives, also see the variable
1196 `message-forward-ignored-headers'."
1197   (interactive "P")
1198   (if (cdr (gnus-summary-work-articles nil))
1199       ;; Process marks are given.
1200       (gnus-uu-digest-mail-forward arg post)
1201     ;; No process marks.
1202     (let ((message-forward-as-mime message-forward-as-mime)
1203           (message-forward-show-mml message-forward-show-mml))
1204       (cond
1205        ((null arg))
1206        ((eq arg 1)
1207         (setq message-forward-as-mime nil
1208               message-forward-show-mml t))
1209        ((eq arg 2)
1210         (setq message-forward-as-mime t
1211               message-forward-show-mml nil))
1212        ((eq arg 3)
1213         (setq message-forward-as-mime t
1214               message-forward-show-mml t))
1215        ((eq arg 4)
1216         (setq message-forward-as-mime nil
1217               message-forward-show-mml nil))
1218        (t
1219         (setq message-forward-as-mime (not message-forward-as-mime))))
1220       (let* ((gnus-article-reply (gnus-summary-article-number))
1221              (gnus-article-yanked-articles (list gnus-article-reply)))
1222         (gnus-setup-message 'forward
1223           (gnus-summary-select-article)
1224           (let ((mail-parse-charset
1225                  (or (and (gnus-buffer-live-p gnus-article-buffer)
1226                           (with-current-buffer gnus-article-buffer
1227                             gnus-article-charset))
1228                      gnus-newsgroup-charset))
1229                 (mail-parse-ignored-charsets
1230                  gnus-newsgroup-ignored-charsets))
1231             (set-buffer gnus-original-article-buffer)
1232             (message-forward post)))))))
1233
1234 (defun gnus-summary-resend-message (address n)
1235   "Resend the current article to ADDRESS."
1236   (interactive
1237    (list (message-read-from-minibuffer
1238           "Resend message(s) to: "
1239           (when (and gnus-summary-resend-default-address
1240                      (gnus-buffer-live-p gnus-original-article-buffer))
1241             ;; If some other article is currently selected, the
1242             ;; initial-contents is wrong. Whatever, it is just the
1243             ;; initial-contents.
1244             (with-current-buffer gnus-original-article-buffer
1245               (nnmail-fetch-field "to"))))
1246          current-prefix-arg))
1247   (let ((articles (gnus-summary-work-articles n))
1248         article)
1249     (while (setq article (pop articles))
1250       (gnus-summary-select-article nil nil nil article)
1251       (save-excursion
1252         (set-buffer gnus-original-article-buffer)
1253         (message-resend address))
1254       (gnus-summary-mark-article-as-forwarded article))))
1255
1256 ;; From: Matthieu Moy <Matthieu.Moy@imag.fr>
1257 (defun gnus-summary-resend-message-edit ()
1258   "Resend an article that has already been sent.
1259 A new buffer will be created to allow the user to modify body and
1260 contents of the message, and then, everything will happen as when
1261 composing a new message."
1262   (interactive)
1263   (let ((article (gnus-summary-article-number)))
1264     (gnus-setup-message 'reply-yank
1265       (gnus-summary-select-article t)
1266       (set-buffer gnus-original-article-buffer)
1267       (let ((cur (current-buffer))
1268             (to (message-fetch-field "to")))
1269         ;; Get a normal message buffer.
1270         (message-pop-to-buffer (message-buffer-name "Resend" to))
1271         (insert-buffer-substring cur)
1272         (mime-to-mml)
1273         (message-narrow-to-head-1)
1274         ;; Gnus will generate a new one when sending.
1275         (message-remove-header "Message-ID")
1276         (message-remove-header message-ignored-resent-headers t)
1277         ;; Remove unwanted headers.
1278         (goto-char (point-max))
1279         (insert mail-header-separator)
1280         (goto-char (point-min))
1281         (when (re-search-forward "^To:\\|^Newsgroups:" nil 'move)
1282           (forward-char 1))
1283         (widen)))))
1284
1285 (defun gnus-summary-post-forward (&optional arg)
1286   "Forward the current article to a newsgroup.
1287 See `gnus-summary-mail-forward' for ARG."
1288   (interactive "P")
1289   (gnus-summary-mail-forward arg t))
1290
1291 (defvar gnus-nastygram-message
1292   "The following article was inappropriately posted to %s.\n\n"
1293   "Format string to insert in nastygrams.
1294 The current group name will be inserted at \"%s\".")
1295
1296 (defun gnus-summary-mail-nastygram (n)
1297   "Send a nastygram to the author of the current article."
1298   (interactive "P")
1299   (when (or gnus-expert-user
1300             (gnus-y-or-n-p
1301              "Really send a nastygram to the author of the current article? "))
1302     (let ((group gnus-newsgroup-name))
1303       (gnus-summary-reply-with-original n)
1304       (set-buffer gnus-message-buffer)
1305       (message-goto-body)
1306       (insert (format gnus-nastygram-message group))
1307       (message-send-and-exit))))
1308
1309 (defun gnus-summary-mail-crosspost-complaint (n)
1310   "Send a complaint about crossposting to the current article(s)."
1311   (interactive "P")
1312   (let ((articles (gnus-summary-work-articles n))
1313         article)
1314     (while (setq article (pop articles))
1315       (set-buffer gnus-summary-buffer)
1316       (gnus-summary-goto-subject article)
1317       (let ((group (gnus-group-real-name gnus-newsgroup-name))
1318             newsgroups followup-to)
1319         (gnus-summary-select-article)
1320         (set-buffer gnus-original-article-buffer)
1321         (if (and (<= (length (message-tokenize-header
1322                               (setq newsgroups
1323                                     (mail-fetch-field "newsgroups"))
1324                               ", "))
1325                      1)
1326                  (or (not (setq followup-to (mail-fetch-field "followup-to")))
1327                      (not (member group (message-tokenize-header
1328                                          followup-to ", ")))))
1329             (if followup-to
1330                 (gnus-message 1 "Followup-to restricted")
1331               (gnus-message 1 "Not a crossposted article"))
1332           (set-buffer gnus-summary-buffer)
1333           (gnus-summary-reply-with-original 1)
1334           (set-buffer gnus-message-buffer)
1335           (message-goto-body)
1336           (insert (format gnus-crosspost-complaint newsgroups group))
1337           (message-goto-subject)
1338           (re-search-forward " *$")
1339           (replace-match " (crosspost notification)" t t)
1340           (gnus-deactivate-mark)
1341           (when (gnus-y-or-n-p "Send this complaint? ")
1342             (message-send-and-exit)))))))
1343
1344 (defun gnus-mail-parse-comma-list ()
1345   (let (accumulated
1346         beg)
1347     (skip-chars-forward " ")
1348     (while (not (eobp))
1349       (setq beg (point))
1350       (skip-chars-forward "^,")
1351       (while (zerop
1352               (save-excursion
1353                 (save-restriction
1354                   (let ((i 0))
1355                     (narrow-to-region beg (point))
1356                     (goto-char beg)
1357                     (logand (progn
1358                               (while (search-forward "\"" nil t)
1359                                 (incf i))
1360                               (if (zerop i) 2 i))
1361                             2)))))
1362         (skip-chars-forward ",")
1363         (skip-chars-forward "^,"))
1364       (skip-chars-backward " ")
1365       (push (buffer-substring beg (point))
1366             accumulated)
1367       (skip-chars-forward "^,")
1368       (skip-chars-forward ", "))
1369     accumulated))
1370
1371 (defun gnus-inews-add-to-address (group)
1372   (let ((to-address (mail-fetch-field "to")))
1373     (when (and to-address
1374                (gnus-alive-p))
1375       ;; This mail group doesn't have a `to-list', so we add one
1376       ;; here.  Magic!
1377       (when (gnus-y-or-n-p
1378              (format "Do you want to add this as `to-list': %s? " to-address))
1379         (gnus-group-add-parameter group (cons 'to-list to-address))))))
1380
1381 (defun gnus-put-message ()
1382   "Put the current message in some group and return to Gnus."
1383   (interactive)
1384   (let ((reply gnus-article-reply)
1385         (winconf gnus-prev-winconf)
1386         (group gnus-newsgroup-name))
1387     (unless (and group
1388                  (not (gnus-group-read-only-p group)))
1389       (setq group (read-string "Put in group: " nil (gnus-writable-groups))))
1390
1391     (when (gnus-gethash group gnus-newsrc-hashtb)
1392       (error "No such group: %s" group))
1393     (save-excursion
1394       (save-restriction
1395         (widen)
1396         (message-narrow-to-headers)
1397         (let ((gnus-deletable-headers nil))
1398           (message-generate-headers
1399            (if (message-news-p)
1400                message-required-news-headers
1401              message-required-mail-headers)))
1402         (goto-char (point-max))
1403         (if (string-match " " group)
1404             (insert "Gcc: \"" group "\"\n")
1405           (insert "Gcc: " group "\n"))
1406         (widen)))
1407     (gnus-inews-do-gcc)
1408     (when (and (get-buffer gnus-group-buffer)
1409                (gnus-buffer-exists-p (car-safe reply))
1410                (cdr reply))
1411       (set-buffer (car reply))
1412       (gnus-summary-mark-article-as-replied (cdr reply)))
1413     (when winconf
1414       (set-window-configuration winconf))))
1415
1416 (defun gnus-article-mail (yank)
1417   "Send a reply to the address near point.
1418 If YANK is non-nil, include the original article."
1419   (interactive "P")
1420   (let ((address
1421          (buffer-substring
1422           (save-excursion (re-search-backward "[ \t\n]" nil t) (1+ (point)))
1423           (save-excursion (re-search-forward "[ \t\n]" nil t) (1- (point))))))
1424     (when address
1425       (gnus-msg-mail address)
1426       (when yank
1427         (gnus-inews-yank-articles (list (cdr gnus-article-current)))))))
1428
1429 (defvar nntp-server-type)
1430 (defun gnus-bug ()
1431   "Send a bug report to the Gnus maintainers."
1432   (interactive)
1433   (unless (gnus-alive-p)
1434     (error "Gnus has been shut down"))
1435   (gnus-setup-message (if (message-mail-user-agent) 'message 'bug)
1436     (unless (message-mail-user-agent)
1437       (delete-other-windows)
1438       (when gnus-bug-create-help-buffer
1439         (switch-to-buffer "*Gnus Help Bug*")
1440         (erase-buffer)
1441         (insert gnus-bug-message)
1442         (goto-char (point-min)))
1443       (message-pop-to-buffer "*Gnus Bug*"))
1444     (let ((message-this-is-mail t))
1445       (message-setup `((To . ,gnus-maintainer) (Subject . ""))))
1446     (when gnus-bug-create-help-buffer
1447       (push `(gnus-bug-kill-buffer) message-send-actions))
1448     (goto-char (point-min))
1449     (re-search-forward (concat "^" (regexp-quote mail-header-separator) "$"))
1450     (forward-line 1)
1451     (insert (gnus-version) "\n"
1452             (emacs-version) "\n")
1453     (when (and (boundp 'nntp-server-type)
1454                (stringp nntp-server-type))
1455       (insert nntp-server-type))
1456     (insert "\n\n\n\n\n")
1457     (let (text)
1458       (save-excursion
1459         (set-buffer (gnus-get-buffer-create " *gnus environment info*"))
1460         (erase-buffer)
1461         (gnus-debug)
1462         (setq text (buffer-string)))
1463       (insert "<#part type=application/emacs-lisp disposition=inline description=\"User settings\">\n" text "\n<#/part>"))
1464     (goto-char (point-min))
1465     (search-forward "Subject: " nil t)
1466     (message "")))
1467
1468 (defun gnus-bug-kill-buffer ()
1469   (when (get-buffer "*Gnus Help Bug*")
1470     (kill-buffer "*Gnus Help Bug*")))
1471
1472 (defun gnus-summary-yank-message (buffer n)
1473   "Yank the current article into a composed message."
1474   (interactive
1475    (list (completing-read "Buffer: " (mapcar 'list (message-buffers)) nil t)
1476          current-prefix-arg))
1477   (gnus-summary-iterate n
1478     (let ((gnus-inhibit-treatment t))
1479       (gnus-summary-select-article))
1480     (save-excursion
1481       (set-buffer buffer)
1482       (message-yank-buffer gnus-article-buffer))))
1483
1484 (defun gnus-debug ()
1485   "Attempts to go through the Gnus source file and report what variables have been changed.
1486 The source file has to be in the Emacs load path."
1487   (interactive)
1488   (let ((files gnus-debug-files)
1489         (point (point))
1490         file expr olist sym)
1491     (gnus-message 4 "Please wait while we snoop your variables...")
1492     (sit-for 0)
1493     ;; Go through all the files looking for non-default values for variables.
1494     (save-excursion
1495       (set-buffer (gnus-get-buffer-create " *gnus bug info*"))
1496       (while files
1497         (erase-buffer)
1498         (when (and (setq file (locate-library (pop files)))
1499                    (file-exists-p file))
1500           (insert-file-contents file)
1501           (goto-char (point-min))
1502           (if (not (re-search-forward "^;;* *Internal variables" nil t))
1503               (gnus-message 4 "Malformed sources in file %s" file)
1504             (narrow-to-region (point-min) (point))
1505             (goto-char (point-min))
1506             (while (setq expr (ignore-errors (read (current-buffer))))
1507               (ignore-errors
1508                 (and (or (eq (car expr) 'defvar)
1509                          (eq (car expr) 'defcustom))
1510                      (stringp (nth 3 expr))
1511                      (not (memq (nth 1 expr) gnus-debug-exclude-variables))
1512                      (or (not (boundp (nth 1 expr)))
1513                          (not (equal (eval (nth 2 expr))
1514                                      (symbol-value (nth 1 expr)))))
1515                      (push (nth 1 expr) olist)))))))
1516       (kill-buffer (current-buffer)))
1517     (when (setq olist (nreverse olist))
1518       (insert "------------------ Environment follows ------------------\n\n"))
1519     (while olist
1520       (if (boundp (car olist))
1521           (ignore-errors
1522            (gnus-pp
1523             `(setq ,(car olist)
1524                    ,(if (or (consp (setq sym (symbol-value (car olist))))
1525                             (and (symbolp sym)
1526                                  (not (or (eq sym nil)
1527                                           (eq sym t)))))
1528                         (list 'quote (symbol-value (car olist)))
1529                       (symbol-value (car olist))))))
1530         (insert ";; (makeunbound '" (symbol-name (car olist)) ")\n"))
1531       (setq olist (cdr olist)))
1532     (insert "\n\n")
1533     ;; Remove any control chars - they seem to cause trouble for some
1534     ;; mailers.  (Byte-compiled output from the stuff above.)
1535     (goto-char point)
1536     (while (re-search-forward (mm-string-as-multibyte
1537                                "[\000-\010\013-\037\200-\237]") nil t)
1538       (replace-match (format "\\%03o" (string-to-char (match-string 0)))
1539                      t t))))
1540
1541 ;;; Treatment of rejected articles.
1542 ;;; Bounced mail.
1543
1544 (defun gnus-summary-resend-bounced-mail (&optional fetch)
1545   "Re-mail the current message.
1546 This only makes sense if the current message is a bounce message that
1547 contains some mail you have written which has been bounced back to
1548 you.
1549 If FETCH, try to fetch the article that this is a reply to, if indeed
1550 this is a reply."
1551   (interactive "P")
1552   (gnus-summary-select-article t)
1553   (set-buffer gnus-original-article-buffer)
1554   (gnus-setup-message 'compose-bounce
1555     (let* ((references (mail-fetch-field "references"))
1556            (parent (and references (gnus-parent-id references))))
1557       (message-bounce)
1558       ;; If there are references, we fetch the article we answered to.
1559       (and fetch parent
1560            (gnus-summary-refer-article parent)
1561            (gnus-summary-show-all-headers)))))
1562
1563 ;;; Gcc handling.
1564
1565 (defun gnus-inews-group-method (group)
1566   (cond
1567    ;; If the group doesn't exist, we assume
1568    ;; it's an archive group...
1569    ((and (null (gnus-get-info group))
1570          (eq (car (gnus-server-to-method gnus-message-archive-method))
1571              (car (gnus-server-to-method (gnus-group-method group)))))
1572     gnus-message-archive-method)
1573    ;; Use the method.
1574    ((gnus-info-method (gnus-get-info group))
1575     (gnus-info-method (gnus-get-info group)))
1576    ;; Find the method.
1577    (t (gnus-server-to-method (gnus-group-method group)))))
1578
1579 ;; Do Gcc handling, which copied the message over to some group.
1580 (defun gnus-inews-do-gcc (&optional gcc)
1581   (interactive)
1582   (save-excursion
1583     (save-restriction
1584       (message-narrow-to-headers)
1585       (let ((gcc (or gcc (mail-fetch-field "gcc" nil t)))
1586             (cur (current-buffer))
1587             groups group method group-art
1588             mml-externalize-attachments)
1589         (when gcc
1590           (message-remove-header "gcc")
1591           (widen)
1592           (setq groups (message-unquote-tokens
1593                         (message-tokenize-header gcc " ,")))
1594           ;; Copy the article over to some group(s).
1595           (while (setq group (pop groups))
1596             (unless (gnus-check-server
1597                      (setq method (gnus-inews-group-method group)))
1598               (error "Can't open server %s" (if (stringp method) method
1599                                               (car method))))
1600             (unless (gnus-request-group group nil method)
1601               (gnus-request-create-group group method))
1602             (setq mml-externalize-attachments
1603                   (if (stringp gnus-gcc-externalize-attachments)
1604                       (string-match gnus-gcc-externalize-attachments group)
1605                     gnus-gcc-externalize-attachments))
1606             (save-excursion
1607               (nnheader-set-temp-buffer " *acc*")
1608               (insert-buffer-substring cur)
1609               (message-encode-message-body)
1610               (save-restriction
1611                 (message-narrow-to-headers)
1612                 (let* ((mail-parse-charset message-default-charset)
1613                        (newsgroups-field (save-restriction
1614                                            (message-narrow-to-headers-or-head)
1615                                            (message-fetch-field "Newsgroups")))
1616                        (followup-field (save-restriction
1617                                          (message-narrow-to-headers-or-head)
1618                                          (message-fetch-field "Followup-To")))
1619                        ;; BUG: We really need to get the charset for
1620                        ;; each name in the Newsgroups and Followup-To
1621                        ;; lines to allow crossposting between group
1622                        ;; namess with incompatible character sets.
1623                        ;; -- Per Abrahamsen <abraham@dina.kvl.dk> 2001-10-08.
1624                        (group-field-charset
1625                         (gnus-group-name-charset
1626                          method (or newsgroups-field "")))
1627                        (followup-field-charset
1628                         (gnus-group-name-charset
1629                          method (or followup-field "")))
1630                        (rfc2047-header-encoding-alist
1631                         (append
1632                          (when group-field-charset
1633                            (list (cons "Newsgroups" group-field-charset)))
1634                          (when followup-field-charset
1635                            (list (cons "Followup-To" followup-field-charset)))
1636                          rfc2047-header-encoding-alist)))
1637                   (mail-encode-encoded-word-buffer)))
1638               (goto-char (point-min))
1639               (when (re-search-forward
1640                      (concat "^" (regexp-quote mail-header-separator) "$")
1641                      nil t)
1642                 (replace-match "" t t ))
1643               (unless (setq group-art
1644                             (gnus-request-accept-article group method t t))
1645                 (gnus-message 1 "Couldn't store article in group %s: %s"
1646                               group (gnus-status-message method))
1647                 (sit-for 2))
1648               (when (and group-art
1649                          ;; FIXME: Should gcc-mark-as-read work when
1650                          ;; Gnus is not running?
1651                          (gnus-alive-p)
1652                          (or gnus-gcc-mark-as-read
1653                              (and
1654                               (boundp 'gnus-inews-mark-gcc-as-read)
1655                               (symbol-value 'gnus-inews-mark-gcc-as-read))))
1656                 (gnus-group-mark-article-read group (cdr group-art)))
1657               (kill-buffer (current-buffer)))))))))
1658
1659 (defun gnus-inews-insert-gcc ()
1660   "Insert Gcc headers based on `gnus-outgoing-message-group'."
1661   (save-excursion
1662     (save-restriction
1663       (message-narrow-to-headers)
1664       (let* ((group gnus-outgoing-message-group)
1665              (gcc (cond
1666                    ((functionp group)
1667                     (funcall group))
1668                    ((or (stringp group) (listp group))
1669                     group))))
1670         (when gcc
1671           (insert "Gcc: "
1672                   (if (stringp gcc)
1673                       (if (string-match " " gcc)
1674                           (concat "\"" gcc "\"")
1675                         gcc)
1676                     (mapconcat (lambda (group)
1677                                  (if (string-match " " group)
1678                                      (concat "\"" group "\"")
1679                                    group))
1680                                gcc " "))
1681                   "\n"))))))
1682
1683 (defun gnus-inews-insert-archive-gcc (&optional group)
1684   "Insert the Gcc to say where the article is to be archived."
1685   (let* ((var gnus-message-archive-group)
1686          (group (or group gnus-newsgroup-name ""))
1687          (gcc-self-val
1688           (and gnus-newsgroup-name
1689                (not (equal gnus-newsgroup-name ""))
1690                (gnus-group-find-parameter
1691                 gnus-newsgroup-name 'gcc-self)))
1692          result
1693          (groups
1694           (cond
1695            ((null gnus-message-archive-method)
1696             ;; Ignore.
1697             nil)
1698            ((stringp var)
1699             ;; Just a single group.
1700             (list var))
1701            ((null var)
1702             ;; We don't want this.
1703             nil)
1704            ((and (listp var) (stringp (car var)))
1705             ;; A list of groups.
1706             var)
1707            ((functionp var)
1708             ;; A function.
1709             (funcall var group))
1710            (t
1711             ;; An alist of regexps/functions/forms.
1712             (while (and var
1713                         (not
1714                          (setq result
1715                                (cond
1716                                 ((stringp (caar var))
1717                                  ;; Regexp.
1718                                  (when (string-match (caar var) group)
1719                                    (cdar var)))
1720                                 ((functionp (car var))
1721                                  ;; Function.
1722                                  (funcall (car var) group))
1723                                 (t
1724                                  (eval (car var)))))))
1725               (setq var (cdr var)))
1726             result)))
1727          name)
1728     (when (or groups gcc-self-val)
1729       (when (stringp groups)
1730         (setq groups (list groups)))
1731       (save-excursion
1732         (save-restriction
1733           (message-narrow-to-headers)
1734           (goto-char (point-max))
1735           (insert "Gcc: ")
1736           (if gcc-self-val
1737               ;; Use the `gcc-self' param value instead.
1738               (progn
1739                 (insert
1740                  (if (stringp gcc-self-val)
1741                      (if (string-match " " gcc-self-val)
1742                          (concat "\"" gcc-self-val "\"")
1743                        gcc-self-val)
1744                    ;; In nndoc groups, we use the parent group name
1745                    ;; instead of the current group.
1746                    (let ((group (or (gnus-group-find-parameter
1747                                      gnus-newsgroup-name 'parent-group)
1748                                     group)))
1749                      (if (string-match " " group)
1750                          (concat "\"" group "\"")
1751                        group))))
1752                 (if (not (eq gcc-self-val 'none))
1753                     (insert "\n")
1754                   (gnus-delete-line)))
1755             ;; Use the list of groups.
1756             (while (setq name (pop groups))
1757               (let ((str (if (string-match ":" name)
1758                              name
1759                            (gnus-group-prefixed-name
1760                             name gnus-message-archive-method))))
1761                 (insert (if (string-match " " str)
1762                             (concat "\"" str "\"")
1763                           str)))
1764               (when groups
1765                 (insert " ")))
1766             (insert "\n")))))))
1767
1768 (defun gnus-mailing-list-followup-to ()
1769   "Look at the headers in the current buffer and return a Mail-Followup-To address."
1770   (let ((x-been-there (gnus-fetch-original-field "x-beenthere"))
1771         (list-post (gnus-fetch-original-field "list-post")))
1772     (when (and list-post
1773                (string-match "mailto:\\([^>]+\\)" list-post))
1774       (setq list-post (match-string 1 list-post)))
1775     (or list-post
1776         x-been-there)))
1777
1778 ;;; Posting styles.
1779
1780 (defun gnus-configure-posting-styles (&optional group-name)
1781   "Configure posting styles according to `gnus-posting-styles'."
1782   (unless gnus-inhibit-posting-styles
1783     (let ((group (or group-name gnus-newsgroup-name ""))
1784           (styles gnus-posting-styles)
1785           style match attribute value v results
1786           filep name address element)
1787       ;; If the group has a posting-style parameter, add it at the end with a
1788       ;; regexp matching everything, to be sure it takes precedence over all
1789       ;; the others.
1790       (when gnus-newsgroup-name
1791         (let ((tmp-style (gnus-group-find-parameter group 'posting-style t)))
1792           (when tmp-style
1793             (setq styles (append styles (list (cons ".*" tmp-style)))))))
1794       ;; Go through all styles and look for matches.
1795       (dolist (style styles)
1796         (setq match (pop style))
1797         (goto-char (point-min))
1798         (when (cond
1799                ((stringp match)
1800                 ;; Regexp string match on the group name.
1801                 (string-match match group))
1802                ((eq match 'header)
1803                 ;; Obsolete format of header match.
1804                 (and (gnus-buffer-live-p gnus-article-copy)
1805                      (with-current-buffer gnus-article-copy
1806                        (save-restriction
1807                          (nnheader-narrow-to-headers)
1808                          (let ((header (message-fetch-field (pop style))))
1809                            (and header
1810                                 (string-match (pop style) header)))))))
1811                ((or (symbolp match)
1812                     (functionp match))
1813                 (cond
1814                  ((functionp match)
1815                   ;; Function to be called.
1816                   (funcall match))
1817                  ((boundp match)
1818                   ;; Variable to be checked.
1819                   (symbol-value match))))
1820                ((listp match)
1821                 (cond
1822                  ((eq (car match) 'header)
1823                   ;; New format of header match.
1824                   (and (gnus-buffer-live-p gnus-article-copy)
1825                        (with-current-buffer gnus-article-copy
1826                          (save-restriction
1827                            (nnheader-narrow-to-headers)
1828                            (let ((header (message-fetch-field (nth 1 match))))
1829                              (and header
1830                                   (string-match (nth 2 match) header)))))))
1831                  (t
1832                   ;; This is a form to be evaled.
1833                   (eval match)))))
1834           ;; We have a match, so we set the variables.
1835           (dolist (attribute style)
1836             (setq element (pop attribute)
1837                   filep nil)
1838             (setq value
1839                   (cond
1840                    ((eq (car attribute) :file)
1841                     (setq filep t)
1842                     (cadr attribute))
1843                    ((eq (car attribute) :value)
1844                     (cadr attribute))
1845                    (t
1846                     (car attribute))))
1847             ;; We get the value.
1848             (setq v
1849                   (cond
1850                    ((stringp value)
1851                     value)
1852                    ((or (symbolp value)
1853                         (functionp value))
1854                     (cond ((functionp value)
1855                            (funcall value))
1856                           ((boundp value)
1857                            (symbol-value value))))
1858                    ((listp value)
1859                     (eval value))))
1860             ;; Translate obsolescent value.
1861             (cond
1862              ((eq element 'signature-file)
1863               (setq element 'signature
1864                     filep t))
1865              ((eq element 'x-face-file)
1866               (setq element 'x-face
1867                     filep t)))
1868             ;; Get the contents of file elems.
1869             (when (and filep v)
1870               (setq v (with-temp-buffer
1871                         (insert-file-contents v)
1872                         (buffer-substring
1873                          (point-min)
1874                          (progn
1875                            (goto-char (point-max))
1876                            (if (zerop (skip-chars-backward "\n"))
1877                                (point)
1878                              (1+ (point))))))))
1879             (setq results (delq (assoc element results) results))
1880             (push (cons element v) results))))
1881       ;; Now we have all the styles, so we insert them.
1882       (setq name (assq 'name results)
1883             address (assq 'address results))
1884       (setq results (delq name (delq address results)))
1885       (gnus-make-local-hook 'message-setup-hook)
1886       (setq results (sort results (lambda (x y)
1887                                     (string-lessp (car x) (car y)))))
1888       (dolist (result results)
1889         (add-hook 'message-setup-hook
1890                   (cond
1891                    ((eq 'eval (car result))
1892                     'ignore)
1893                    ((eq 'body (car result))
1894                     `(lambda ()
1895                        (save-excursion
1896                          (message-goto-body)
1897                          (insert ,(cdr result)))))
1898                    ((eq 'signature (car result))
1899                     (set (make-local-variable 'message-signature) nil)
1900                     (set (make-local-variable 'message-signature-file) nil)
1901                     (if (not (cdr result))
1902                         'ignore
1903                       `(lambda ()
1904                          (save-excursion
1905                            (let ((message-signature ,(cdr result)))
1906                              (when message-signature
1907                                (message-insert-signature)))))))
1908                    (t
1909                     (let ((header
1910                            (if (symbolp (car result))
1911                                (capitalize (symbol-name (car result)))
1912                              (car result))))
1913                       `(lambda ()
1914                          (save-excursion
1915                            (message-remove-header ,header)
1916                            (let ((value ,(cdr result)))
1917                              (when value
1918                                (message-goto-eoh)
1919                                (insert ,header ": " value)
1920                                (unless (bolp)
1921                                  (insert "\n")))))))))
1922                   nil 'local))
1923       (when (or name address)
1924         (add-hook 'message-setup-hook
1925                   `(lambda ()
1926                      (set (make-local-variable 'user-mail-address)
1927                           ,(or (cdr address) user-mail-address))
1928                      (let ((user-full-name ,(or (cdr name) (user-full-name)))
1929                            (user-mail-address
1930                             ,(or (cdr address) user-mail-address)))
1931                        (save-excursion
1932                          (message-remove-header "From")
1933                          (message-goto-eoh)
1934                          (insert "From: " (message-make-from) "\n"))))
1935                   nil 'local)))))
1936
1937 ;;; Allow redefinition of functions.
1938
1939 (gnus-ems-redefine)
1940
1941 (provide 'gnus-msg)
1942
1943 ;;; arch-tag: 9f22b2f5-1c0a-49de-916e-4c88e984852b
1944 ;;; gnus-msg.el ends here