lisp/gnus/gnus-msg.el

   1 ;;; gnus-msg.el --- mail and post interface for Gnus
   2
   3 ;; Copyright (C) 1995-2013 Free Software Foundation, Inc.
   4
   5 ;; Author: Masanobu UMEDA <umerin@flab.flab.fujitsu.junet>
   6 ;;      Lars Magne Ingebrigtsen <larsi@gnus.org>
   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 3 of the License, or
  14 ;; (at your option) 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.  If not, see <http://www.gnu.org/licenses/>.
  23
  24 ;;; Commentary:
  25
  26 ;;; Code:
  27
  28 (eval-when-compile (require 'cl))
  29
  30 (require 'gnus)
  31 (require 'gnus-ems)
  32 (require 'message)
  33 (require 'gnus-art)
  34 (require 'gnus-util)
  35
  36 (defcustom gnus-post-method 'current
  37   "*Preferred method for posting USENET news.
  38
  39 If this variable is `current' (which is the default), Gnus will use
  40 the \"current\" select method when posting.  If it is `native', Gnus
  41 will use the native select method when posting.
  42
  43 This method will not be used in mail groups and the like, only in
  44 \"real\" newsgroups.
  45
  46 If not `native' nor `current', the value must be a valid method as discussed
  47 in the documentation of `gnus-select-method'.  It can also be a list of
  48 methods.  If that is the case, the user will be queried for what select
  49 method to use when posting."
  50   :group 'gnus-group-foreign
  51   :link '(custom-manual "(gnus)Posting Server")
  52   :type `(choice (const native)
  53                  (const current)
  54                  (sexp :tag "Methods" ,gnus-select-method)))
  55
  56 (defcustom gnus-outgoing-message-group nil
  57   "All outgoing messages will be put in this group.
  58 If you want to store all your outgoing mail and articles in the group
  59 \"nnml:archive\", you set this variable to that value.  This variable
  60 can also be a list of group names.
  61
  62 If you want to have greater control over what group to put each
  63 message in, you can set this variable to a function that checks the
  64 current newsgroup name and then returns a suitable group name (or list
  65 of names)."
  66   :group 'gnus-message
  67   :type '(choice (const nil)
  68                  (function)
  69                  (string :tag "Group")
  70                  (repeat :tag "List of groups" (string :tag "Group"))))
  71
  72 (make-obsolete-variable 'gnus-outgoing-message-group 'gnus-message-archive-group "24.1")
  73
  74 (defcustom gnus-mailing-list-groups nil
  75   "*If non-nil a regexp matching groups that are really mailing lists.
  76 This is useful when you're reading a mailing list that has been
  77 gatewayed to a newsgroup, and you want to followup to an article in
  78 the group."
  79   :group 'gnus-message
  80   :type '(choice (regexp)
  81                  (const nil)))
  82
  83 (defcustom gnus-add-to-list nil
  84   "*If non-nil, add a `to-list' parameter automatically."
  85   :group 'gnus-message
  86   :type 'boolean)
  87
  88 (defcustom gnus-crosspost-complaint
  89   "Hi,
  90
  91 You posted the article below with the following Newsgroups header:
  92
  93 Newsgroups: %s
  94
  95 The %s group, at least, was an inappropriate recipient
  96 of this message.  Please trim your Newsgroups header to exclude this
  97 group before posting in the future.
  98
  99 Thank you.
 100
 101 "
 102   "Format string to be inserted when complaining about crossposts.
 103 The first %s will be replaced by the Newsgroups header;
 104 the second with the current group name."
 105   :group 'gnus-message
 106   :type 'string)
 107
 108 (defcustom gnus-message-setup-hook nil
 109   "Hook run after setting up a message buffer."
 110   :group 'gnus-message
 111   :options '(message-remove-blank-cited-lines)
 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 "Emacs 22.1")
 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 (defcustom gnus-gcc-self-resent-messages 'no-gcc-self
 167   "Like `gcc-self' group parameter, only for unmodified resent messages.
 168 Applied to messages sent by `gnus-summary-resend-message'.  Non-nil
 169 value of this variable takes precedence over any existing Gcc header.
 170
 171 If this is `none', no Gcc copy will be made.  If this is t, messages
 172 resent will be Gcc'd to the current group.  If this is a string, it
 173 specifies a group to which resent messages will be Gcc'd.  If this is
 174 nil, Gcc will be done according to existing Gcc header(s), if any.
 175 If this is `no-gcc-self', resent messages will be Gcc'd to groups that
 176 existing Gcc header specifies, except for the current group."
 177   :version "24.3"
 178   :group 'gnus-message
 179   :type '(choice (const none) (const t) string (const nil)
 180                  (const no-gcc-self)))
 181
 182 (gnus-define-group-parameter
 183  posting-charset-alist
 184  :type list
 185  :function-document
 186  "Return the permitted unencoded charsets for posting of GROUP."
 187  :variable gnus-group-posting-charset-alist
 188  :variable-default
 189   '(("^\\(no\\|fr\\)\\.[^,]*\\(,[ \t\n]*\\(no\\|fr\\)\\.[^,]*\\)*$" iso-8859-1 (iso-8859-1))
 190     ("^\\(fido7\\|relcom\\)\\.[^,]*\\(,[ \t\n]*\\(fido7\\|relcom\\)\\.[^,]*\\)*$" koi8-r (koi8-r))
 191     (message-this-is-mail nil nil)
 192     (message-this-is-news nil t))
 193  :variable-document
 194   "Alist of regexps and permitted unencoded charsets for posting.
 195 Each element of the alist has the form (TEST HEADER BODY-LIST), where
 196 TEST is either a regular expression matching the newsgroup header or a
 197 variable to query,
 198 HEADER is the charset which may be left unencoded in the header (nil
 199 means encode all charsets),
 200 BODY-LIST is a list of charsets which may be encoded using 8bit
 201 content-transfer encoding in the body, or one of the special values
 202 nil (always encode using quoted-printable) or t (always use 8bit).
 203
 204 Note that any value other than nil for HEADER infringes some RFCs, so
 205 use this option with care."
 206  :variable-group gnus-charset
 207  :variable-type
 208  '(repeat (list :tag "Permitted unencoded charsets"
 209                 (choice :tag "Where"
 210                         (regexp :tag "Group")
 211                         (const :tag "Mail message" :value message-this-is-mail)
 212                         (const :tag "News article" :value message-this-is-news))
 213                 (choice :tag "Header"
 214                         (const :tag "None" nil)
 215                         (symbol :tag "Charset"))
 216                 (choice :tag "Body"
 217                         (const :tag "Any" :value t)
 218                         (const :tag "None" :value nil)
 219                         (repeat :tag "Charsets"
 220                                 (symbol :tag "Charset")))))
 221  :parameter-type '(choice :tag "Permitted unencoded charsets"
 222                           :value nil
 223                           (repeat (symbol)))
 224  :parameter-document       "\
 225 List of charsets that are permitted to be unencoded.")
 226
 227 (defcustom gnus-debug-files
 228   '("gnus.el" "gnus-sum.el" "gnus-group.el"
 229     "gnus-art.el" "gnus-start.el" "gnus-async.el"
 230     "gnus-msg.el" "gnus-score.el" "gnus-win.el" "gnus-topic.el"
 231     "gnus-agent.el" "gnus-cache.el" "gnus-srvr.el"
 232     "mm-util.el" "mm-decode.el" "nnmail.el" "message.el")
 233   "Files whose variables will be reported in `gnus-bug'."
 234   :version "22.1"
 235   :group 'gnus-message
 236   :type '(repeat (string :tag "File")))
 237
 238 (defcustom gnus-debug-exclude-variables
 239   '(mm-mime-mule-charset-alist
 240     nnmail-split-fancy message-minibuffer-local-map)
 241   "Variables that should not be reported in `gnus-bug'."
 242   :version "22.1"
 243   :group 'gnus-message
 244   :type '(repeat (symbol :tag "Variable")))
 245
 246 (defcustom gnus-discouraged-post-methods
 247   '(nndraft nnml nnimap nnmaildir nnmh nnfolder nndir)
 248   "A list of back ends that are not used in \"real\" newsgroups.
 249 This variable is used only when `gnus-post-method' is `current'."
 250   :version "22.1"
 251   :group 'gnus-group-foreign
 252   :type '(repeat (symbol :tag "Back end")))
 253
 254 (defcustom gnus-message-replysign
 255   nil
 256   "Automatically sign replies to signed messages.
 257 See also the `mml-default-sign-method' variable."
 258   :group 'gnus-message
 259   :type 'boolean)
 260
 261 (defcustom gnus-message-replyencrypt t
 262   "Automatically encrypt replies to encrypted messages.
 263 See also the `mml-default-encrypt-method' variable."
 264   :version "24.1"
 265   :group 'gnus-message
 266   :type 'boolean)
 267
 268 (defcustom gnus-message-replysignencrypted
 269   t
 270   "Setting this causes automatically encrypted messages to also be signed."
 271   :group 'gnus-message
 272   :type 'boolean)
 273
 274 (defcustom gnus-confirm-mail-reply-to-news (and gnus-novice-user
 275                                                 (not gnus-expert-user))
 276   "If non-nil, Gnus requests confirmation when replying to news.
 277 This is done because new users often reply by mistake when reading
 278 news.
 279 This can also be a function receiving the group name as the only
 280 parameter, which should return non-nil if a confirmation is needed; or
 281 a regexp, in which case a confirmation is asked for if the group name
 282 matches the regexp."
 283   :version "23.1" ;; No Gnus (default changed)
 284   :group 'gnus-message
 285   :type '(choice (const :tag "No" nil)
 286                  (const :tag "Yes" t)
 287                  (regexp :tag "If group matches regexp")
 288                  (function :tag "If function evaluates to non-nil")))
 289
 290 (defcustom gnus-confirm-treat-mail-like-news
 291   nil
 292   "If non-nil, Gnus will treat mail like news with regard to confirmation
 293 when replying by mail.  See the `gnus-confirm-mail-reply-to-news' variable
 294 for fine-tuning this.
 295 If nil, Gnus will never ask for confirmation if replying to mail."
 296   :version "22.1"
 297   :group 'gnus-message
 298   :type 'boolean)
 299
 300 (defcustom gnus-summary-resend-default-address t
 301   "If non-nil, Gnus tries to suggest a default address to resend to.
 302 If nil, the address field will always be empty after invoking
 303 `gnus-summary-resend-message'."
 304   :version "22.1"
 305   :group 'gnus-message
 306   :type 'boolean)
 307
 308 (defcustom gnus-message-highlight-citation
 309   t ;; gnus-treat-highlight-citation ;; gnus-cite dependency
 310   "Enable highlighting of different citation levels in message-mode."
 311   :version "23.1" ;; No Gnus
 312   :group 'gnus-cite
 313   :group 'gnus-message
 314   :type 'boolean)
 315
 316 (defcustom gnus-gcc-pre-body-encode-hook nil
 317   "A hook called before encoding the body of the Gcc copy of a message.
 318 The current buffer (when the hook is run) contains the message
 319 including the message header.  Changes made to the message will
 320 only affect the Gcc copy, but not the original message."
 321   :group 'gnus-message
 322   :version "24.3"
 323   :type 'hook)
 324
 325 (defcustom gnus-gcc-post-body-encode-hook nil
 326     "A hook called after encoding the body of the Gcc copy of a message.
 327 The current buffer (when the hook is run) contains the message
 328 including the message header.  Changes made to the message will
 329 only affect the Gcc copy, but not the original message."
 330   :group 'gnus-message
 331   :version "24.3"
 332   :type 'hook)
 333
 334 (autoload 'gnus-message-citation-mode "gnus-cite" nil t)
 335
 336 ;;; Internal variables.
 337
 338 (defvar gnus-inhibit-posting-styles nil
 339   "Inhibit the use of posting styles.")
 340
 341 (defvar gnus-article-yanked-articles nil)
 342 (defvar gnus-message-buffer "*Mail Gnus*")
 343 (defvar gnus-article-copy nil)
 344 (defvar gnus-check-before-posting nil)
 345 (defvar gnus-last-posting-server nil)
 346 (defvar gnus-message-group-art nil)
 347
 348 (defvar gnus-msg-force-broken-reply-to nil)
 349
 350 (defconst gnus-bug-message
 351   "Sending a bug report to the Gnus Towers.
 352 ========================================
 353
 354 The buffer below is a mail buffer.  When you press `C-c C-c', it will
 355 be sent to the Gnus Bug Exterminators.
 356
 357 The thing near the bottom of the buffer is how the environment
 358 settings will be included in the mail.  Please do not delete that.
 359 They will tell the Bug People what your environment is, so that it
 360 will be easier to locate the bugs.
 361
 362 If you have found a bug that makes Emacs go \"beep\", set
 363 debug-on-error to t (`M-x set-variable RET debug-on-error RET t RET')
 364 and include the backtrace in your bug report.
 365
 366 Please describe the bug in annoying, painstaking detail.
 367
 368 Thank you for your help in stamping out bugs.
 369 ")
 370
 371 (autoload 'gnus-uu-post-news "gnus-uu" nil t)
 372
 373 \f
 374 ;;;
 375 ;;; Gnus Posting Functions
 376 ;;;
 377
 378 (gnus-define-keys (gnus-summary-send-map "S" gnus-summary-mode-map)
 379   "p" gnus-summary-post-news
 380   "i" gnus-summary-news-other-window
 381   "f" gnus-summary-followup
 382   "F" gnus-summary-followup-with-original
 383   "c" gnus-summary-cancel-article
 384   "s" gnus-summary-supersede-article
 385   "r" gnus-summary-reply
 386   "y" gnus-summary-yank-message
 387   "R" gnus-summary-reply-with-original
 388   "L" gnus-summary-reply-to-list-with-original
 389   "w" gnus-summary-wide-reply
 390   "W" gnus-summary-wide-reply-with-original
 391   "v" gnus-summary-very-wide-reply
 392   "V" gnus-summary-very-wide-reply-with-original
 393   "n" gnus-summary-followup-to-mail
 394   "N" gnus-summary-followup-to-mail-with-original
 395   "m" gnus-summary-mail-other-window
 396   "u" gnus-uu-post-news
 397   "\M-c" gnus-summary-mail-crosspost-complaint
 398   "Br" gnus-summary-reply-broken-reply-to
 399   "BR" gnus-summary-reply-broken-reply-to-with-original
 400   "om" gnus-summary-mail-forward
 401   "op" gnus-summary-post-forward
 402   "Om" gnus-uu-digest-mail-forward
 403   "Op" gnus-uu-digest-post-forward)
 404
 405 (gnus-define-keys (gnus-send-bounce-map "D" gnus-summary-send-map)
 406   "b" gnus-summary-resend-bounced-mail
 407   ;; "c" gnus-summary-send-draft
 408   "r" gnus-summary-resend-message
 409   "e" gnus-summary-resend-message-edit)
 410
 411 ;;; Internal functions.
 412
 413 (defun gnus-inews-make-draft (articles)
 414   `(lambda ()
 415      (gnus-inews-make-draft-meta-information
 416       ,(gnus-group-decoded-name gnus-newsgroup-name) ',articles)))
 417
 418 (autoload 'nnir-article-number "nnir" nil nil 'macro)
 419 (autoload 'nnir-article-group "nnir" nil nil 'macro)
 420 (autoload 'gnus-nnir-group-p "nnir")
 421
 422
 423 (defvar gnus-article-reply nil)
 424 (defmacro gnus-setup-message (config &rest forms)
 425   (let ((winconf (make-symbol "gnus-setup-message-winconf"))
 426         (winconf-name (make-symbol "gnus-setup-message-winconf-name"))
 427         (buffer (make-symbol "gnus-setup-message-buffer"))
 428         (article (make-symbol "gnus-setup-message-article"))
 429         (yanked (make-symbol "gnus-setup-yanked-articles"))
 430         (group (make-symbol "gnus-setup-message-group")))
 431     `(let ((,winconf (current-window-configuration))
 432            (,winconf-name gnus-current-window-configuration)
 433            (,buffer (buffer-name (current-buffer)))
 434            (,article (if (and (gnus-nnir-group-p gnus-newsgroup-name)
 435                               gnus-article-reply)
 436                          (nnir-article-number gnus-article-reply)
 437                        gnus-article-reply))
 438            (,yanked gnus-article-yanked-articles)
 439            (,group (if (and (gnus-nnir-group-p gnus-newsgroup-name)
 440                             gnus-article-reply)
 441                        (nnir-article-group gnus-article-reply)
 442                      gnus-newsgroup-name))
 443            (message-header-setup-hook
 444             (copy-sequence message-header-setup-hook))
 445            (mbl mml-buffer-list)
 446            (message-mode-hook (copy-sequence message-mode-hook)))
 447        (setq mml-buffer-list nil)
 448        (add-hook 'message-header-setup-hook (lambda ()
 449                                               (gnus-inews-insert-gcc ,group)))
 450        ;; message-newsreader and message-mailer were formerly set in
 451        ;; gnus-inews-add-send-actions, but this is too late when
 452        ;; message-generate-headers-first is used. --ansel
 453        (add-hook 'message-mode-hook
 454                  (lambda nil
 455                    (setq message-newsreader
 456                          (setq message-mailer (gnus-extended-version)))))
 457        ;; #### FIXME: for a reason that I did not manage to identify yet,
 458        ;; the variable `gnus-newsgroup-name' does not honor a dynamically
 459        ;; scoped or setq'ed value from a caller like `C-u gnus-summary-mail'.
 460        ;; After evaluation of @forms below, it gets the value we actually want
 461        ;; to override, and the posting styles are used. For that reason, I've
 462        ;; added an optional argument to `gnus-configure-posting-styles' to
 463        ;; make sure that the correct value for the group name is used. -- drv
 464        (add-hook 'message-mode-hook
 465                  (if (memq ,config '(reply-yank reply))
 466                      (lambda ()
 467                        (gnus-configure-posting-styles ,group))
 468                    (lambda ()
 469                      ;; There may be an old " *gnus article copy*" buffer.
 470                      (let (gnus-article-copy)
 471                        (gnus-configure-posting-styles ,group)))))
 472        (gnus-alist-pull ',(intern gnus-draft-meta-information-header)
 473                   message-required-headers)
 474        (when (and ,group
 475                   (not (string= ,group "")))
 476          (push (cons
 477                 (intern gnus-draft-meta-information-header)
 478                 (gnus-inews-make-draft (or ,yanked ,article)))
 479                message-required-headers))
 480        (unwind-protect
 481            (progn
 482              ,@forms)
 483          (gnus-inews-add-send-actions ,winconf ,buffer ,article ,config
 484                                       ,yanked ,winconf-name)
 485          (setq gnus-message-buffer (current-buffer))
 486          (set (make-local-variable 'gnus-message-group-art)
 487               (cons ,group ,article))
 488          (set (make-local-variable 'gnus-newsgroup-name) ,group)
 489          ;; Enable highlighting of different citation levels
 490          (when gnus-message-highlight-citation
 491            (gnus-message-citation-mode 1))
 492          (gnus-run-hooks 'gnus-message-setup-hook)
 493          (if (eq major-mode 'message-mode)
 494              (let ((mbl1 mml-buffer-list))
 495                (setq mml-buffer-list mbl)  ;; Global value
 496                (set (make-local-variable 'mml-buffer-list) mbl1);; Local value
 497                (gnus-make-local-hook 'kill-buffer-hook)
 498                (gnus-make-local-hook 'change-major-mode-hook)
 499                (add-hook 'change-major-mode-hook 'mml-destroy-buffers nil t)
 500                (add-hook 'kill-buffer-hook 'mml-destroy-buffers t t))
 501            (mml-destroy-buffers)
 502            (setq mml-buffer-list mbl)))
 503        (message-hide-headers)
 504        (gnus-add-buffer)
 505        (gnus-configure-windows ,config t)
 506        (run-hooks 'post-command-hook)
 507        (set-buffer-modified-p nil))))
 508
 509 (defun gnus-inews-make-draft-meta-information (group articles)
 510   (when (numberp articles)
 511     (setq articles (list articles)))
 512   (concat "(\"" group "\""
 513           (if articles
 514               (concat " "
 515                       (mapconcat
 516                        (lambda (elem)
 517                          (number-to-string
 518                           (if (consp elem)
 519                               (car elem)
 520                             elem)))
 521                        articles " "))
 522             "")
 523           ")"))
 524
 525 ;;;###autoload
 526 (defun gnus-msg-mail (&optional to subject other-headers continue
 527                                 switch-action yank-action send-actions
 528                                 return-action)
 529   "Start editing a mail message to be sent.
 530 Like `message-mail', but with Gnus paraphernalia, particularly the
 531 Gcc: header for archiving purposes.
 532 If Gnus isn't running, a plain `message-mail' setup is used
 533 instead."
 534   (interactive)
 535   (if (not (gnus-alive-p))
 536       (progn
 537         (message "Gnus not running; using plain Message mode")
 538         (message-mail to subject other-headers continue
 539                       nil yank-action send-actions return-action))
 540     (let ((buf (current-buffer))
 541           ;; Don't use posting styles corresponding to any existing group.
 542           (gnus-newsgroup-name "")
 543           mail-buf)
 544       (gnus-setup-message 'message
 545         (message-mail to subject other-headers continue
 546                       nil yank-action send-actions return-action))
 547       (when switch-action
 548         (setq mail-buf (current-buffer))
 549         (switch-to-buffer buf)
 550         (apply switch-action mail-buf nil))
 551       ;; COMPOSEFUNC should return t if succeed.  Undocumented ???
 552       t)))
 553
 554 ;;;###autoload
 555 (defun gnus-button-mailto (address)
 556   "Mail to ADDRESS."
 557   (set-buffer (gnus-copy-article-buffer))
 558   (gnus-setup-message 'message
 559     (message-reply address)))
 560
 561 ;;;###autoload
 562 (defun gnus-button-reply (&optional to-address wide)
 563   "Like `message-reply'."
 564   (interactive)
 565   (gnus-setup-message 'message
 566     (message-reply to-address wide)))
 567
 568 ;;;###autoload
 569 (define-mail-user-agent 'gnus-user-agent
 570   'gnus-msg-mail 'message-send-and-exit
 571   'message-kill-buffer 'message-send-hook)
 572
 573 (defun gnus-setup-posting-charset (group)
 574   (let ((alist gnus-group-posting-charset-alist)
 575         (group (or group ""))
 576         elem)
 577     (when group
 578       (catch 'found
 579         (while (setq elem (pop alist))
 580           (when (or (and (stringp (car elem))
 581                          (string-match (car elem) group))
 582                     (and (functionp (car elem))
 583                          (funcall (car elem) group))
 584                     (and (symbolp (car elem))
 585                          (symbol-value (car elem))))
 586             (throw 'found (cons (cadr elem) (caddr elem)))))))))
 587
 588 (defun gnus-inews-add-send-actions (winconf buffer article
 589                                             &optional config yanked
 590                                             winconf-name)
 591   (gnus-make-local-hook 'message-sent-hook)
 592   (add-hook 'message-sent-hook (if gnus-agent 'gnus-agent-possibly-do-gcc
 593                                  'gnus-inews-do-gcc) nil t)
 594   (when gnus-agent
 595     (gnus-make-local-hook 'message-header-hook)
 596     (add-hook 'message-header-hook 'gnus-agent-possibly-save-gcc nil t))
 597   (setq message-post-method
 598         `(lambda (&optional arg)
 599            (gnus-post-method arg ,gnus-newsgroup-name)))
 600   (message-add-action
 601    `(progn
 602       (setq gnus-current-window-configuration ',winconf-name)
 603       (when (gnus-buffer-exists-p ,buffer)
 604         (set-window-configuration ,winconf)))
 605    'exit 'postpone 'kill)
 606   (let ((to-be-marked (cond
 607                        (yanked
 608                         (mapcar
 609                          (lambda (x) (if (listp x) (car x) x)) yanked))
 610                        (article (if (listp article) article (list article)))
 611                        (t nil))))
 612     (message-add-action
 613      `(when (gnus-buffer-exists-p ,buffer)
 614         (with-current-buffer ,buffer
 615           ,(when to-be-marked
 616              (if (eq config 'forward)
 617                  `(gnus-summary-mark-article-as-forwarded ',to-be-marked)
 618                `(gnus-summary-mark-article-as-replied ',to-be-marked)))))
 619      'send)))
 620
 621 (put 'gnus-setup-message 'lisp-indent-function 1)
 622 (put 'gnus-setup-message 'edebug-form-spec '(form body))
 623
 624 ;;; Post news commands of Gnus group mode and summary mode
 625
 626 (defun gnus-group-mail (&optional arg)
 627   "Start composing a mail.
 628 If ARG, use the group under the point to find a posting style.
 629 If ARG is 1, prompt for a group name to find the posting style."
 630   (interactive "P")
 631   ;; We can't `let' gnus-newsgroup-name here, since that leads
 632   ;; to local variables leaking.
 633   (let ((group gnus-newsgroup-name)
 634         ;; make sure last viewed article doesn't affect posting styles:
 635         (gnus-article-copy)
 636         (buffer (current-buffer)))
 637     (unwind-protect
 638         (progn
 639           (setq gnus-newsgroup-name
 640                 (if arg
 641                     (if (= 1 (prefix-numeric-value arg))
 642                         (gnus-group-completing-read
 643                          "Use posting style of group"
 644                          nil (gnus-read-active-file-p))
 645                       (gnus-group-group-name))
 646                   ""))
 647           ;; #### see comment in gnus-setup-message -- drv
 648           (gnus-setup-message 'message (message-mail)))
 649       (with-current-buffer buffer
 650         (setq gnus-newsgroup-name group)))))
 651
 652 (defun gnus-group-news (&optional arg)
 653   "Start composing a news.
 654 If ARG, post to group under point.
 655 If ARG is 1, prompt for group name to post to.
 656
 657 This function prepares a news even when using mail groups.  This is useful
 658 for posting messages to mail groups without actually sending them over the
 659 network.  The corresponding back end must have a 'request-post method."
 660   (interactive "P")
 661   ;; We can't `let' gnus-newsgroup-name here, since that leads
 662   ;; to local variables leaking.
 663   (let ((group gnus-newsgroup-name)
 664         ;; make sure last viewed article doesn't affect posting styles:
 665         (gnus-article-copy)
 666         (buffer (current-buffer)))
 667     (unwind-protect
 668         (progn
 669           (setq gnus-newsgroup-name
 670                 (if arg
 671                     (if (= 1 (prefix-numeric-value arg))
 672                         (gnus-group-completing-read "Use group"
 673                                                     nil
 674                                                     (gnus-read-active-file-p))
 675                       (gnus-group-group-name))
 676                   ""))
 677           ;; #### see comment in gnus-setup-message -- drv
 678           (gnus-setup-message 'message
 679             (message-news (gnus-group-real-name gnus-newsgroup-name))))
 680       (with-current-buffer buffer
 681         (setq gnus-newsgroup-name group)))))
 682
 683 (defun gnus-group-post-news (&optional arg)
 684   "Start composing a message (a news by default).
 685 If ARG, post to group under point.  If ARG is 1, prompt for group name.
 686 Depending on the selected group, the message might be either a mail or
 687 a news."
 688   (interactive "P")
 689   ;; Bind this variable here to make message mode hooks work ok.
 690   (let ((gnus-newsgroup-name
 691          (if arg
 692              (if (= 1 (prefix-numeric-value arg))
 693                  (gnus-group-completing-read "Newsgroup" nil
 694                                              (gnus-read-active-file-p))
 695                (or (gnus-group-group-name) ""))
 696            ""))
 697         ;; make sure last viewed article doesn't affect posting styles:
 698         (gnus-article-copy))
 699     (gnus-post-news 'post gnus-newsgroup-name nil nil nil nil
 700                     (string= gnus-newsgroup-name ""))))
 701
 702 (defun gnus-summary-mail-other-window (&optional arg)
 703   "Start composing a mail in another window.
 704 Use the posting of the current group by default.
 705 If ARG, don't do that.  If ARG is 1, prompt for group name to find the
 706 posting style."
 707   (interactive "P")
 708   ;; We can't `let' gnus-newsgroup-name here, since that leads
 709   ;; to local variables leaking.
 710   (let ((group gnus-newsgroup-name)
 711         ;; make sure last viewed article doesn't affect posting styles:
 712         (gnus-article-copy)
 713         (buffer (current-buffer)))
 714     (unwind-protect
 715         (progn
 716           (setq gnus-newsgroup-name
 717                 (if arg
 718                     (if (= 1 (prefix-numeric-value arg))
 719                         (gnus-group-completing-read "Use group"
 720                                                     nil
 721                                                     (gnus-read-active-file-p))
 722                       "")
 723                   gnus-newsgroup-name))
 724           ;; #### see comment in gnus-setup-message -- drv
 725           (gnus-setup-message 'message (message-mail)))
 726       (with-current-buffer buffer
 727         (setq gnus-newsgroup-name group)))))
 728
 729 (defun gnus-summary-news-other-window (&optional arg)
 730   "Start composing a news in another window.
 731 Post to the current group by default.
 732 If ARG, don't do that.  If ARG is 1, prompt for group name to post to.
 733
 734 This function prepares a news even when using mail groups.  This is useful
 735 for posting messages to mail groups without actually sending them over the
 736 network.  The corresponding back end must have a 'request-post method."
 737   (interactive "P")
 738   ;; We can't `let' gnus-newsgroup-name here, since that leads
 739   ;; to local variables leaking.
 740   (let ((group gnus-newsgroup-name)
 741         ;; make sure last viewed article doesn't affect posting styles:
 742         (gnus-article-copy)
 743         (buffer (current-buffer)))
 744     (unwind-protect
 745         (progn
 746           (setq gnus-newsgroup-name
 747                 (if arg
 748                     (if (= 1 (prefix-numeric-value arg))
 749                         (gnus-group-completing-read "Use group"
 750                                                     nil
 751                                                     (gnus-read-active-file-p))
 752                       "")
 753                   gnus-newsgroup-name))
 754           ;; #### see comment in gnus-setup-message -- drv
 755           (gnus-setup-message 'message
 756             (progn
 757               (message-news (gnus-group-real-name gnus-newsgroup-name))
 758               (set (make-local-variable 'gnus-discouraged-post-methods)
 759                    (remove
 760                     (car (gnus-find-method-for-group gnus-newsgroup-name))
 761                     gnus-discouraged-post-methods)))))
 762       (with-current-buffer buffer
 763         (setq gnus-newsgroup-name group)))))
 764
 765 (defun gnus-summary-post-news (&optional arg)
 766   "Start composing a message.  Post to the current group by default.
 767 If ARG, don't do that.  If ARG is 1, prompt for a group name to post to.
 768 Depending on the selected group, the message might be either a mail or
 769 a news."
 770   (interactive "P")
 771   ;; Bind this variable here to make message mode hooks work ok.
 772   (let ((gnus-newsgroup-name
 773          (if arg
 774              (if (= 1 (prefix-numeric-value arg))
 775                  (gnus-group-completing-read "Newsgroup" nil
 776                                              (gnus-read-active-file-p))
 777                "")
 778            gnus-newsgroup-name))
 779         ;; make sure last viewed article doesn't affect posting styles:
 780         (gnus-article-copy))
 781     (gnus-post-news 'post gnus-newsgroup-name)))
 782
 783
 784 (defun gnus-summary-followup (yank &optional force-news)
 785   "Compose a followup to an article.
 786 If prefix argument YANK is non-nil, the original article is yanked
 787 automatically.
 788 YANK is a list of elements, where the car of each element is the
 789 article number, and the cdr is the string to be yanked."
 790   (interactive
 791    (list (and current-prefix-arg
 792               (gnus-summary-work-articles 1))))
 793   (when yank
 794     (gnus-summary-goto-subject
 795      (if (listp (car yank))
 796          (caar yank)
 797        (car yank))))
 798   (save-window-excursion
 799     (gnus-summary-select-article))
 800   (let ((headers (gnus-summary-article-header (gnus-summary-article-number)))
 801         (gnus-newsgroup-name gnus-newsgroup-name))
 802     ;; Send a followup.
 803     (gnus-post-news nil gnus-newsgroup-name
 804                     headers gnus-article-buffer
 805                     yank nil force-news)
 806     (gnus-summary-handle-replysign)))
 807
 808 (defun gnus-summary-followup-with-original (n &optional force-news)
 809   "Compose a followup to an article and include the original article.
 810 The text in the region will be yanked.  If the region isn't
 811 active, the entire article will be yanked."
 812   (interactive "P")
 813   (gnus-summary-followup (gnus-summary-work-articles n) force-news))
 814
 815 (defun gnus-summary-followup-to-mail (&optional arg)
 816   "Followup to the current mail message via news."
 817   (interactive
 818    (list (and current-prefix-arg
 819               (gnus-summary-work-articles 1))))
 820   (gnus-summary-followup arg t))
 821
 822 (defun gnus-summary-followup-to-mail-with-original (&optional arg)
 823   "Followup to the current mail message via news."
 824   (interactive "P")
 825   (gnus-summary-followup (gnus-summary-work-articles arg) t))
 826
 827 (defun gnus-inews-yank-articles (articles)
 828   (let (beg article yank-string)
 829     (message-goto-body)
 830     (while (setq article (pop articles))
 831       (when (listp article)
 832         (setq yank-string (nth 1 article)
 833               article (nth 0 article)))
 834       (save-window-excursion
 835         (set-buffer gnus-summary-buffer)
 836         (gnus-summary-select-article nil nil nil article)
 837         (gnus-summary-remove-process-mark article))
 838       (gnus-copy-article-buffer nil yank-string)
 839       (let ((message-reply-buffer gnus-article-copy)
 840             (message-reply-headers
 841              ;; The headers are decoded.
 842              (with-current-buffer gnus-article-copy
 843                (save-restriction
 844                  (nnheader-narrow-to-headers)
 845                  (nnheader-parse-naked-head)))))
 846         (message-yank-original)
 847         (message-exchange-point-and-mark)
 848         (setq beg (or beg (mark t))))
 849       (when articles
 850         (insert "\n")))
 851     (push-mark)
 852     (goto-char beg)))
 853
 854 (defun gnus-summary-cancel-article (&optional n symp)
 855   "Cancel an article you posted.
 856 Uses the process-prefix convention.  If given the symbolic
 857 prefix `a', cancel using the standard posting method; if not
 858 post using the current select method."
 859   (interactive (gnus-interactive "P\ny"))
 860   (let ((message-post-method
 861          `(lambda (arg)
 862             (gnus-post-method (eq ',symp 'a) ,gnus-newsgroup-name)))
 863         (user-mail-address user-mail-address))
 864     (dolist (article (gnus-summary-work-articles n))
 865       (when (gnus-summary-select-article t nil nil article)
 866         ;; Pretend that we're doing a followup so that we can see what
 867         ;; the From header would have ended up being.
 868         (save-window-excursion
 869           (save-excursion
 870             (gnus-summary-followup nil)
 871             (let ((from (message-fetch-field "from")))
 872               (when from
 873                 (setq user-mail-address
 874                       (car (mail-header-parse-address from)))))
 875             (kill-buffer (current-buffer))))
 876         ;; Now cancel the article using the From header we got.
 877         (when (gnus-eval-in-buffer-window gnus-original-article-buffer
 878                 (message-cancel-news))
 879           (gnus-summary-mark-as-read article gnus-canceled-mark)
 880           (gnus-cache-remove-article 1))
 881         (gnus-article-hide-headers-if-wanted))
 882       (gnus-summary-remove-process-mark article))))
 883
 884 (defun gnus-summary-supersede-article ()
 885   "Compose an article that will supersede a previous article.
 886 This is done simply by taking the old article and adding a Supersedes
 887 header line with the old Message-ID."
 888   (interactive)
 889   (let ((article (gnus-summary-article-number))
 890         (mail-parse-charset gnus-newsgroup-charset))
 891     (gnus-setup-message 'reply-yank
 892       (gnus-summary-select-article t)
 893       (set-buffer gnus-original-article-buffer)
 894       (message-supersede)
 895       (push
 896        `((lambda ()
 897            (when (gnus-buffer-exists-p ,gnus-summary-buffer)
 898              (with-current-buffer ,gnus-summary-buffer
 899                (gnus-cache-possibly-remove-article ,article nil nil nil t)
 900                (gnus-summary-mark-as-read ,article gnus-canceled-mark)))))
 901        message-send-actions)
 902       ;; Add Gcc header.
 903       (gnus-inews-insert-gcc))))
 904
 905 \f
 906
 907 (defun gnus-copy-article-buffer (&optional article-buffer yank-string)
 908   ;; make a copy of the article buffer with all text properties removed
 909   ;; this copy is in the buffer gnus-article-copy.
 910   ;; if ARTICLE-BUFFER is nil, gnus-article-buffer is used
 911   ;; this buffer should be passed to all mail/news reply/post routines.
 912   (setq gnus-article-copy (gnus-get-buffer-create " *gnus article copy*"))
 913   (with-current-buffer gnus-article-copy
 914     (mm-enable-multibyte))
 915   (let ((article-buffer (or article-buffer gnus-article-buffer))
 916         end beg)
 917     (if (not (and (get-buffer article-buffer)
 918                   (gnus-buffer-exists-p article-buffer)))
 919         (error "Can't find any article buffer")
 920       (with-current-buffer article-buffer
 921         (let ((gnus-newsgroup-charset (or gnus-article-charset
 922                                           gnus-newsgroup-charset))
 923               (inhibit-read-only t)
 924               (gnus-newsgroup-ignored-charsets
 925                (or gnus-article-ignored-charsets
 926                    gnus-newsgroup-ignored-charsets)))
 927           (save-restriction
 928             ;; Copy over the (displayed) article buffer, delete
 929             ;; hidden text and remove text properties.
 930             (widen)
 931             (copy-to-buffer gnus-article-copy (point-min) (point-max))
 932             (set-buffer gnus-article-copy)
 933             (when yank-string
 934               (message-goto-body)
 935               (delete-region (point) (point-max))
 936               (insert yank-string))
 937             (gnus-article-delete-text-of-type 'annotation)
 938             (gnus-article-delete-text-of-type 'multipart)
 939             (gnus-remove-text-with-property 'gnus-prev)
 940             (gnus-remove-text-with-property 'gnus-next)
 941             (gnus-remove-text-with-property 'gnus-decoration)
 942             (insert
 943              (prog1
 944                  (buffer-substring-no-properties (point-min) (point-max))
 945                (erase-buffer)))
 946             ;; Find the original headers.
 947             (set-buffer gnus-original-article-buffer)
 948             (goto-char (point-min))
 949             (while (looking-at message-unix-mail-delimiter)
 950               (forward-line 1))
 951             (let ((mail-header-separator ""))
 952               (setq beg (point)
 953                     end (or (message-goto-body)
 954                             ;; There may be just a header.
 955                             (point-max))))
 956             ;; Delete the headers from the displayed articles.
 957             (set-buffer gnus-article-copy)
 958             (let ((mail-header-separator ""))
 959               (delete-region (goto-char (point-min))
 960                              (or (message-goto-body) (point-max))))
 961             ;; Insert the original article headers.
 962             (insert-buffer-substring gnus-original-article-buffer beg end)
 963             ;; Decode charsets.
 964             (let ((gnus-article-decode-hook
 965                    (delq 'article-decode-charset
 966                          (copy-sequence gnus-article-decode-hook)))
 967                   (rfc2047-quote-decoded-words-containing-tspecials t))
 968               (run-hooks 'gnus-article-decode-hook)))))
 969       gnus-article-copy)))
 970
 971 (defun gnus-post-news (post &optional group header article-buffer yank subject
 972                             force-news)
 973   (when article-buffer
 974     (gnus-copy-article-buffer))
 975   (let ((gnus-article-reply (and article-buffer (gnus-summary-article-number)))
 976         (gnus-article-yanked-articles yank)
 977         (add-to-list gnus-add-to-list))
 978     (gnus-setup-message (cond (yank 'reply-yank)
 979                               (article-buffer 'reply)
 980                               (t 'message))
 981       (let* ((group (or group gnus-newsgroup-name))
 982              (charset (gnus-group-name-charset nil group))
 983              (pgroup group)
 984              to-address to-group mailing-list to-list
 985              newsgroup-p)
 986         (when group
 987           (setq to-address (gnus-parameter-to-address group)
 988                 to-group (gnus-group-find-parameter group 'to-group)
 989                 to-list (gnus-parameter-to-list group)
 990                 newsgroup-p (gnus-group-find-parameter group 'newsgroup)
 991                 mailing-list (when gnus-mailing-list-groups
 992                                (string-match gnus-mailing-list-groups group))
 993                 group (gnus-group-name-decode (gnus-group-real-name group)
 994                                               charset)))
 995         (if (or (and to-group
 996                      (gnus-news-group-p to-group))
 997                 newsgroup-p
 998                 force-news
 999                 (and (gnus-news-group-p
1000                       (or pgroup gnus-newsgroup-name)
1001                       (or header gnus-current-article))
1002                      (not mailing-list)
1003                      (not to-list)
1004                      (not to-address)))
1005             ;; This is news.
1006             (if post
1007                 (message-news
1008                  (or to-group
1009                      (and (not (gnus-virtual-group-p pgroup)) group)))
1010               (set-buffer gnus-article-copy)
1011               (gnus-msg-treat-broken-reply-to)
1012               (message-followup (if (or newsgroup-p force-news)
1013                                     (if (save-restriction
1014                                           (article-narrow-to-head)
1015                                           (message-fetch-field "newsgroups"))
1016                                         nil
1017                                       "")
1018                                   to-group)))
1019           ;; The is mail.
1020           (if post
1021               (progn
1022                 (message-mail (or to-address to-list))
1023                 ;; Arrange for mail groups that have no `to-address' to
1024                 ;; get that when the user sends off the mail.
1025                 (when (and (not to-list)
1026                            (not to-address)
1027                            add-to-list)
1028                   (push (list 'gnus-inews-add-to-address pgroup)
1029                         message-send-actions)))
1030             (set-buffer gnus-article-copy)
1031             (gnus-msg-treat-broken-reply-to)
1032             (message-wide-reply to-address)))
1033         (when yank
1034           (gnus-inews-yank-articles yank))))))
1035
1036 (defun gnus-msg-treat-broken-reply-to (&optional force)
1037   "Remove the Reply-to header if broken-reply-to."
1038   (when (or force
1039             (gnus-group-find-parameter
1040              gnus-newsgroup-name 'broken-reply-to))
1041     (save-restriction
1042       (message-narrow-to-head)
1043       (message-remove-header "reply-to"))))
1044
1045 (defun gnus-post-method (arg group &optional silent)
1046   "Return the posting method based on GROUP and ARG.
1047 If SILENT, don't prompt the user."
1048   (let ((gnus-post-method (or (gnus-parameter-post-method group)
1049                               gnus-post-method))
1050         (group-method (gnus-find-method-for-group group)))
1051     (cond
1052      ;; If the group-method is nil (which shouldn't happen) we use
1053      ;; the default method.
1054      ((null group-method)
1055       (or (and (listp gnus-post-method) ;If not current/native/nil
1056                (not (listp (car gnus-post-method))) ; and not a list of methods
1057                gnus-post-method)        ;then use it.
1058           gnus-select-method
1059           message-post-method))
1060      ;; We want the inverse of the default
1061      ((and arg (not (eq arg 0)))
1062       (if (eq gnus-post-method 'current)
1063           gnus-select-method
1064         group-method))
1065      ;; We query the user for a post method.
1066      ((or arg
1067           (and (listp gnus-post-method)
1068                (listp (car gnus-post-method))))
1069       (let* ((methods
1070               ;; Collect all methods we know about.
1071               (append
1072                (when (listp gnus-post-method)
1073                  (if (listp (car gnus-post-method))
1074                      gnus-post-method
1075                    (list gnus-post-method)))
1076                gnus-secondary-select-methods
1077                (mapcar 'cdr gnus-server-alist)
1078                (mapcar 'car gnus-opened-servers)
1079                (list gnus-select-method)
1080                (list group-method)))
1081              method-alist post-methods method)
1082         ;; Weed out all mail methods.
1083         (while methods
1084           (setq method (gnus-server-get-method "" (pop methods)))
1085           (when (and (or (gnus-method-option-p method 'post)
1086                          (gnus-method-option-p method 'post-mail))
1087                      (not (member method post-methods)))
1088             (push method post-methods)))
1089         ;; Create a name-method alist.
1090         (setq method-alist
1091               (mapcar
1092                (lambda (m)
1093                  (if (equal (cadr m) "")
1094                      (list (symbol-name (car m)) m)
1095                    (list (concat (cadr m) " (" (symbol-name (car m)) ")") m)))
1096                post-methods))
1097         ;; Query the user.
1098         (cadr
1099          (assoc
1100           (setq gnus-last-posting-server
1101                 (if (and silent
1102                          gnus-last-posting-server)
1103                     ;; Just use the last value.
1104                     gnus-last-posting-server
1105                   (gnus-completing-read
1106                    "Posting method" (mapcar 'car method-alist) t
1107                    (cons (or gnus-last-posting-server "") 0))))
1108           method-alist))))
1109      ;; Override normal method.
1110      ((and (eq gnus-post-method 'current)
1111            (not (memq (car group-method) gnus-discouraged-post-methods))
1112            (gnus-get-function group-method 'request-post t))
1113       (assert (not arg))
1114       group-method)
1115      ;; Use gnus-post-method.
1116      ((listp gnus-post-method)          ;A method...
1117       (assert (not (listp (car gnus-post-method)))) ;... not a list of methods.
1118       gnus-post-method)
1119      ;; Use the normal select method (nil or native).
1120      (t gnus-select-method))))
1121
1122 \f
1123
1124 (defun gnus-extended-version ()
1125   "Stringified Gnus version and Emacs version.
1126 See the variable `gnus-user-agent'."
1127   (interactive)
1128   (if (stringp gnus-user-agent)
1129       gnus-user-agent
1130     ;; `gnus-user-agent' is a list:
1131     (let* ((float-output-format nil)
1132            (gnus-v
1133             (when (memq 'gnus gnus-user-agent)
1134               (concat "Gnus/"
1135                       (gnus-replace-in-string
1136                        (format "%1.8f" (gnus-continuum-version gnus-version))
1137                        "0+\\'" "")
1138                       " (" gnus-version ")")))
1139            (emacs-v (gnus-emacs-version)))
1140       (concat gnus-v (when (and gnus-v emacs-v) " ")
1141               emacs-v))))
1142
1143 \f
1144 ;;;
1145 ;;; Gnus Mail Functions
1146 ;;;
1147
1148 ;;; Mail reply commands of Gnus summary mode
1149
1150 (defun gnus-summary-reply (&optional yank wide very-wide)
1151   "Start composing a mail reply to the current message.
1152 If prefix argument YANK is non-nil, the original article is yanked
1153 automatically.
1154 If WIDE, make a wide reply.
1155 If VERY-WIDE, make a very wide reply."
1156   (interactive
1157    (list (and current-prefix-arg
1158               (gnus-summary-work-articles 1))))
1159   ;; Allow user to require confirmation before replying by mail to the
1160   ;; author of a news article (or mail message).
1161   (when (or (not (or (gnus-news-group-p gnus-newsgroup-name)
1162                      gnus-confirm-treat-mail-like-news))
1163             (not (cond ((stringp gnus-confirm-mail-reply-to-news)
1164                         (string-match gnus-confirm-mail-reply-to-news
1165                                       gnus-newsgroup-name))
1166                        ((functionp gnus-confirm-mail-reply-to-news)
1167                         (funcall gnus-confirm-mail-reply-to-news
1168                                  gnus-newsgroup-name))
1169                        (t gnus-confirm-mail-reply-to-news)))
1170             (if (or wide very-wide)
1171                 t ;; Ignore gnus-confirm-mail-reply-to-news for wide and very
1172                   ;; wide replies.
1173               (y-or-n-p "Really reply by mail to article author? ")))
1174     (let* ((article
1175             (if (listp (car yank))
1176                 (caar yank)
1177               (car yank)))
1178            (gnus-article-reply (or article (gnus-summary-article-number)))
1179            (gnus-article-yanked-articles yank)
1180            (headers ""))
1181       ;; Stripping headers should be specified with mail-yank-ignored-headers.
1182       (when yank
1183         (gnus-summary-goto-subject article))
1184       (gnus-setup-message (if yank 'reply-yank 'reply)
1185         (if (not very-wide)
1186             (gnus-summary-select-article)
1187           (dolist (article very-wide)
1188             (gnus-summary-select-article nil nil nil article)
1189             (with-current-buffer (gnus-copy-article-buffer)
1190               (gnus-msg-treat-broken-reply-to)
1191               (save-restriction
1192                 (message-narrow-to-head)
1193                 (setq headers (concat headers (buffer-string)))))))
1194         (set-buffer (gnus-copy-article-buffer))
1195         (gnus-msg-treat-broken-reply-to gnus-msg-force-broken-reply-to)
1196         (save-restriction
1197           (message-narrow-to-head)
1198           (when very-wide
1199             (erase-buffer)
1200             (insert headers))
1201           (goto-char (point-max)))
1202         (mml-quote-region (point) (point-max))
1203         (message-reply nil wide)
1204         (when yank
1205           (gnus-inews-yank-articles yank))
1206         (gnus-summary-handle-replysign)))))
1207
1208 (defun gnus-summary-handle-replysign ()
1209   "Check the various replysign variables and take action accordingly."
1210   (when (or gnus-message-replysign gnus-message-replyencrypt)
1211     (let (signed encrypted)
1212       (with-current-buffer gnus-article-buffer
1213         (setq signed (memq 'signed gnus-article-wash-types))
1214         (setq encrypted (memq 'encrypted gnus-article-wash-types)))
1215       (cond ((and gnus-message-replyencrypt encrypted)
1216              (mml-secure-message mml-default-encrypt-method
1217                                  (if gnus-message-replysignencrypted
1218                                      'signencrypt
1219                                    'encrypt)))
1220             ((and gnus-message-replysign signed)
1221              (mml-secure-message mml-default-sign-method 'sign))))))
1222
1223 (defun gnus-summary-reply-with-original (n &optional wide)
1224   "Start composing a reply mail to the current message.
1225 The original article will be yanked."
1226   (interactive "P")
1227   (gnus-summary-reply (gnus-summary-work-articles n) wide))
1228
1229 (defun gnus-summary-reply-to-list-with-original (n &optional wide)
1230   "Start composing a reply mail to the current message.
1231 The reply goes only to the mailing list.
1232 The original article will be yanked."
1233   (interactive "P")
1234   (let ((message-reply-to-function
1235          (lambda nil
1236            `((To . ,(gnus-mailing-list-followup-to))))))
1237     (gnus-summary-reply (gnus-summary-work-articles n) wide)))
1238
1239 (defun gnus-summary-reply-broken-reply-to (&optional yank wide very-wide)
1240   "Like `gnus-summary-reply' except removing reply-to field.
1241 If prefix argument YANK is non-nil, the original article is yanked
1242 automatically.
1243 If WIDE, make a wide reply.
1244 If VERY-WIDE, make a very wide reply."
1245   (interactive
1246    (list (and current-prefix-arg
1247               (gnus-summary-work-articles 1))))
1248   (let ((gnus-msg-force-broken-reply-to t))
1249     (gnus-summary-reply yank wide very-wide)))
1250
1251 (defun gnus-summary-reply-broken-reply-to-with-original (n &optional wide)
1252   "Like `gnus-summary-reply-with-original' except removing reply-to field.
1253 The original article will be yanked."
1254   (interactive "P")
1255   (gnus-summary-reply-broken-reply-to (gnus-summary-work-articles n) wide))
1256
1257 (defun gnus-summary-wide-reply (&optional yank)
1258   "Start composing a wide reply mail to the current message.
1259 If prefix argument YANK is non-nil, the original article is yanked
1260 automatically."
1261   (interactive
1262    (list (and current-prefix-arg
1263               (gnus-summary-work-articles 1))))
1264   (gnus-summary-reply yank t))
1265
1266 (defun gnus-summary-wide-reply-with-original (n)
1267   "Start composing a wide reply mail to the current message.
1268 The original article will be yanked.
1269 Uses the process/prefix convention."
1270   (interactive "P")
1271   (gnus-summary-reply-with-original n t))
1272
1273 (defun gnus-summary-very-wide-reply (&optional yank)
1274   "Start composing a very wide reply mail to the current message.
1275 If prefix argument YANK is non-nil, the original article is yanked
1276 automatically."
1277   (interactive
1278    (list (and current-prefix-arg
1279               (gnus-summary-work-articles 1))))
1280   (gnus-summary-reply yank t (gnus-summary-work-articles yank)))
1281
1282 (defun gnus-summary-very-wide-reply-with-original (n)
1283   "Start composing a very wide reply mail to the current message.
1284 The original article will be yanked."
1285   (interactive "P")
1286   (gnus-summary-reply
1287    (gnus-summary-work-articles n) t (gnus-summary-work-articles n)))
1288
1289 (defun gnus-summary-mail-forward (&optional arg post)
1290   "Forward the current message(s) to another user.
1291 If process marks exist, forward all marked messages;
1292 if ARG is nil, see `message-forward-as-mime' and `message-forward-show-mml';
1293 if ARG is 1, decode the message and forward directly inline;
1294 if ARG is 2, forward message as an rfc822 MIME section;
1295 if ARG is 3, decode message and forward as an rfc822 MIME section;
1296 if ARG is 4, forward message directly inline;
1297 otherwise, use flipped `message-forward-as-mime'.
1298 If POST, post instead of mail.
1299 For the \"inline\" alternatives, also see the variable
1300 `message-forward-ignored-headers'."
1301   (interactive "P")
1302   (if (cdr (gnus-summary-work-articles nil))
1303       ;; Process marks are given.
1304       (gnus-uu-digest-mail-forward nil post)
1305     ;; No process marks.
1306     (let ((message-forward-as-mime message-forward-as-mime)
1307           (message-forward-show-mml message-forward-show-mml))
1308       (cond
1309        ((null arg))
1310        ((eq arg 1)
1311         (setq message-forward-as-mime nil
1312               message-forward-show-mml t))
1313        ((eq arg 2)
1314         (setq message-forward-as-mime t
1315               message-forward-show-mml nil))
1316        ((eq arg 3)
1317         (setq message-forward-as-mime t
1318               message-forward-show-mml t))
1319        ((eq arg 4)
1320         (setq message-forward-as-mime nil
1321               message-forward-show-mml nil))
1322        (t
1323         (setq message-forward-as-mime (not message-forward-as-mime))))
1324       (let* ((gnus-article-reply (gnus-summary-article-number))
1325              (gnus-article-yanked-articles (list gnus-article-reply)))
1326         (gnus-setup-message 'forward
1327           (gnus-summary-select-article)
1328           (let ((mail-parse-charset
1329                  (or (and (gnus-buffer-live-p gnus-article-buffer)
1330                           (with-current-buffer gnus-article-buffer
1331                             gnus-article-charset))
1332                      gnus-newsgroup-charset))
1333                 (mail-parse-ignored-charsets
1334                  gnus-newsgroup-ignored-charsets))
1335             (set-buffer gnus-original-article-buffer)
1336             (message-forward post)))))))
1337
1338 (defun gnus-summary-resend-message-insert-gcc ()
1339   "Insert Gcc header according to `gnus-gcc-self-resent-messages'."
1340   (gnus-inews-insert-gcc)
1341   (let ((gcc (mapcar
1342               (lambda (group)
1343                 (mm-encode-coding-string
1344                  group
1345                  (gnus-group-name-charset (gnus-inews-group-method group)
1346                                           group)))
1347               (message-unquote-tokens
1348                (message-tokenize-header (mail-fetch-field "gcc" nil t)
1349                                         " ,"))))
1350         (self (with-current-buffer gnus-summary-buffer
1351                 gnus-gcc-self-resent-messages)))
1352     (message-remove-header "gcc")
1353     (when gcc
1354       (goto-char (point-max))
1355       (cond ((eq self 'none))
1356             ((eq self t)
1357              (insert "Gcc: \"" gnus-newsgroup-name "\"\n"))
1358             ((stringp self)
1359              (insert "Gcc: "
1360                      (mm-encode-coding-string
1361                       (if (string-match " " self)
1362                           (concat "\"" self "\"")
1363                         self)
1364                       (gnus-group-name-charset (gnus-inews-group-method self)
1365                                                self))
1366                      "\n"))
1367             ((null self)
1368              (insert "Gcc: " (mapconcat 'identity gcc ", ") "\n"))
1369             ((eq self 'no-gcc-self)
1370              (when (setq gcc (delete
1371                               gnus-newsgroup-name
1372                               (delete (concat "\"" gnus-newsgroup-name "\"")
1373                                       gcc)))
1374                (insert "Gcc: " (mapconcat 'identity gcc ", ") "\n")))))))
1375
1376 (defun gnus-summary-resend-message (address n)
1377   "Resend the current article to ADDRESS."
1378   (interactive
1379    (list (message-read-from-minibuffer
1380           "Resend message(s) to: "
1381           (when (and gnus-summary-resend-default-address
1382                      (gnus-buffer-live-p gnus-original-article-buffer))
1383             ;; If some other article is currently selected, the
1384             ;; initial-contents is wrong. Whatever, it is just the
1385             ;; initial-contents.
1386             (with-current-buffer gnus-original-article-buffer
1387               (nnmail-fetch-field "to"))))
1388          current-prefix-arg))
1389   (let ((message-header-setup-hook (copy-sequence message-header-setup-hook))
1390         (message-sent-hook (copy-sequence message-sent-hook))
1391         ;; Honor posting-style for `name' and `address' in Resent-From header.
1392         (styles (gnus-group-find-parameter gnus-newsgroup-name
1393                                            'posting-style t))
1394         (user-full-name user-full-name)
1395         (user-mail-address user-mail-address)
1396         tem)
1397     (dolist (style styles)
1398       (when (stringp (cadr style))
1399         (setcdr style (list (mm-decode-coding-string (cadr style) 'utf-8)))))
1400     (dolist (style (if styles
1401                        (append gnus-posting-styles (list (cons ".*" styles)))
1402                      gnus-posting-styles))
1403       (when (and (stringp (car style))
1404                  (string-match (pop style) gnus-newsgroup-name))
1405         (when (setq tem (cadr (assq 'name style)))
1406           (setq user-full-name tem))
1407         (when (setq tem (cadr (assq 'address style)))
1408           (setq user-mail-address tem))))
1409     ;; `gnus-summary-resend-message-insert-gcc' must run last.
1410     (add-hook 'message-header-setup-hook
1411               'gnus-summary-resend-message-insert-gcc t)
1412     (add-hook 'message-sent-hook
1413               `(lambda ()
1414                  (let ((rfc2047-encode-encoded-words nil))
1415                    ,(if gnus-agent
1416                         '(gnus-agent-possibly-do-gcc)
1417                       '(gnus-inews-do-gcc)))))
1418     (dolist (article (gnus-summary-work-articles n))
1419       (gnus-summary-select-article nil nil nil article)
1420       (with-current-buffer gnus-original-article-buffer
1421         (let ((gnus-gcc-externalize-attachments nil)
1422               (message-inhibit-body-encoding t))
1423           (message-resend address)))
1424       (gnus-summary-mark-article-as-forwarded article))))
1425
1426 ;; From: Matthieu Moy <Matthieu.Moy@imag.fr>
1427 (defun gnus-summary-resend-message-edit ()
1428   "Resend an article that has already been sent.
1429 A new buffer will be created to allow the user to modify body and
1430 contents of the message, and then, everything will happen as when
1431 composing a new message."
1432   (interactive)
1433   (let ((mail-parse-charset gnus-newsgroup-charset))
1434     (gnus-setup-message 'reply-yank
1435       (gnus-summary-select-article t)
1436       (set-buffer gnus-original-article-buffer)
1437       (let ((cur (current-buffer))
1438             (to (message-fetch-field "to")))
1439         ;; Get a normal message buffer.
1440         (message-pop-to-buffer (message-buffer-name "Resend" to))
1441         (insert-buffer-substring cur)
1442         (mime-to-mml)
1443         (message-narrow-to-head-1)
1444         ;; Gnus will generate a new one when sending.
1445         (message-remove-header "Message-ID")
1446         ;; Remove unwanted headers.
1447         (message-remove-header message-ignored-resent-headers t)
1448         (goto-char (point-max))
1449         (insert mail-header-separator)
1450         ;; Add Gcc header.
1451         (gnus-inews-insert-gcc)
1452         (goto-char (point-min))
1453         (when (re-search-forward "^To:\\|^Newsgroups:" nil 'move)
1454           (forward-char 1))
1455         (widen)))))
1456
1457 (defun gnus-summary-post-forward (&optional arg)
1458   "Forward the current article to a newsgroup.
1459 See `gnus-summary-mail-forward' for ARG."
1460   (interactive "P")
1461   (gnus-summary-mail-forward arg t))
1462
1463 (defun gnus-summary-mail-crosspost-complaint (n)
1464   "Send a complaint about crossposting to the current article(s)."
1465   (interactive "P")
1466   (dolist (article (gnus-summary-work-articles n))
1467     (set-buffer gnus-summary-buffer)
1468     (gnus-summary-goto-subject article)
1469     (let ((group (gnus-group-real-name gnus-newsgroup-name))
1470           newsgroups followup-to)
1471       (gnus-summary-select-article)
1472       (set-buffer gnus-original-article-buffer)
1473       (if (and (<= (length (message-tokenize-header
1474                             (setq newsgroups
1475                                   (mail-fetch-field "newsgroups"))
1476                             ", "))
1477                    1)
1478                (or (not (setq followup-to (mail-fetch-field "followup-to")))
1479                    (not (member group (message-tokenize-header
1480                                        followup-to ", ")))))
1481           (if followup-to
1482               (gnus-message 1 "Followup-to restricted")
1483             (gnus-message 1 "Not a crossposted article"))
1484         (set-buffer gnus-summary-buffer)
1485         (gnus-summary-reply-with-original 1)
1486         (set-buffer gnus-message-buffer)
1487         (message-goto-body)
1488         (insert (format gnus-crosspost-complaint newsgroups group))
1489         (message-goto-subject)
1490         (re-search-forward " *$")
1491         (replace-match " (crosspost notification)" t t)
1492         (gnus-deactivate-mark)
1493         (when (gnus-y-or-n-p "Send this complaint? ")
1494           (message-send-and-exit))))))
1495
1496 (defun gnus-inews-add-to-address (group)
1497   (let ((to-address (mail-fetch-field "to")))
1498     (when (and to-address
1499                (gnus-alive-p))
1500       ;; This mail group doesn't have a `to-list', so we add one
1501       ;; here.  Magic!
1502       (when (gnus-y-or-n-p
1503              (format "Do you want to add this as `to-list': %s? " to-address))
1504         (gnus-group-add-parameter group (cons 'to-list to-address))))))
1505
1506 (defun gnus-article-mail (yank)
1507   "Send a reply to the address near point.
1508 If YANK is non-nil, include the original article."
1509   (interactive "P")
1510   (let ((address
1511          (buffer-substring
1512           (save-excursion (re-search-backward "[ \t\n]" nil t) (1+ (point)))
1513           (save-excursion (re-search-forward "[ \t\n]" nil t) (1- (point))))))
1514     (when address
1515       (gnus-msg-mail address)
1516       (when yank
1517         (gnus-inews-yank-articles (list (cdr gnus-article-current)))))))
1518
1519 (defvar nntp-server-type)
1520 (defun gnus-bug ()
1521   "Send a bug report to the Gnus maintainers."
1522   (interactive)
1523   (unless (gnus-alive-p)
1524     (error "Gnus has been shut down"))
1525   (gnus-setup-message (if (message-mail-user-agent) 'message 'bug)
1526     (unless (message-mail-user-agent)
1527       (when gnus-bug-create-help-buffer
1528         (switch-to-buffer "*Gnus Help Bug*")
1529         (erase-buffer)
1530         (insert gnus-bug-message)
1531         (goto-char (point-min)))
1532       (message-pop-to-buffer "*Gnus Bug*"))
1533     (let ((message-this-is-mail t))
1534       (message-setup `((To . ,gnus-maintainer)
1535                        (Subject . "")
1536                        (X-Debbugs-Package
1537                         . ,(format "%s" gnus-bug-package))
1538                        (X-Debbugs-Version
1539                         . ,(format "%s" (gnus-continuum-version))))))
1540     (when gnus-bug-create-help-buffer
1541       (push `(gnus-bug-kill-buffer) message-send-actions))
1542     (goto-char (point-min))
1543     (message-goto-body)
1544     (insert "\n\n\n\n\n")
1545     (insert (gnus-version) "\n"
1546             (emacs-version) "\n")
1547     (when (and (boundp 'nntp-server-type)
1548                (stringp nntp-server-type))
1549       (insert nntp-server-type))
1550     (goto-char (point-min))
1551     (search-forward "Subject: " nil t)
1552     (message "")))
1553
1554 (defun gnus-bug-kill-buffer ()
1555   (when (get-buffer "*Gnus Help Bug*")
1556     (kill-buffer "*Gnus Help Bug*")))
1557
1558 (defun gnus-summary-yank-message (buffer n)
1559   "Yank the current article into a composed message."
1560   (interactive
1561    (list (gnus-completing-read "Buffer" (message-buffers) t)
1562          current-prefix-arg))
1563   (gnus-summary-iterate n
1564     (let ((gnus-inhibit-treatment t))
1565       (gnus-summary-select-article))
1566     (with-current-buffer buffer
1567       (message-yank-buffer gnus-article-buffer))))
1568
1569 ;;; Treatment of rejected articles.
1570 ;;; Bounced mail.
1571
1572 (defun gnus-summary-resend-bounced-mail (&optional fetch)
1573   "Re-mail the current message.
1574 This only makes sense if the current message is a bounce message that
1575 contains some mail you have written which has been bounced back to
1576 you.
1577 If FETCH, try to fetch the article that this is a reply to, if indeed
1578 this is a reply."
1579   (interactive "P")
1580   (gnus-summary-select-article t)
1581   (let (summary-buffer parent)
1582     (if fetch
1583         (progn
1584           (setq summary-buffer (current-buffer))
1585           (set-buffer gnus-original-article-buffer)
1586           (article-goto-body)
1587           (when (re-search-forward "^References:\n?" nil t)
1588             (while (memq (char-after) '(?\t ? ))
1589               (forward-line 1))
1590             (skip-chars-backward "\t\n ")
1591             (setq parent
1592                   (gnus-parent-id (buffer-substring (match-end 0) (point))))))
1593       (set-buffer gnus-original-article-buffer))
1594     (gnus-setup-message 'compose-bounce
1595       (message-bounce)
1596       ;; Add Gcc header.
1597       (gnus-inews-insert-gcc)
1598       ;; If there are references, we fetch the article we answered to.
1599       (when parent
1600         (with-current-buffer summary-buffer
1601           (gnus-summary-refer-article parent)
1602           (gnus-summary-show-all-headers))))))
1603
1604 ;;; Gcc handling.
1605
1606 (defun gnus-inews-group-method (group)
1607   (cond
1608    ;; If the group doesn't exist, we assume
1609    ;; it's an archive group...
1610    ((and (null (gnus-get-info group))
1611          (eq (car (gnus-server-to-method gnus-message-archive-method))
1612              (car (gnus-server-to-method (gnus-group-method group)))))
1613     gnus-message-archive-method)
1614    ;; Use the method.
1615    ((gnus-info-method (gnus-get-info group))
1616     (gnus-info-method (gnus-get-info group)))
1617    ;; Find the method.
1618    (t (gnus-server-to-method (gnus-group-method group)))))
1619
1620 ;; Do Gcc handling, which copied the message over to some group.
1621 (defun gnus-inews-do-gcc (&optional gcc)
1622   (interactive)
1623   (save-excursion
1624     (save-restriction
1625       (message-narrow-to-headers)
1626       (let ((gcc (or gcc (mail-fetch-field "gcc" nil t)))
1627             (cur (current-buffer))
1628             groups group method group-art options
1629             mml-externalize-attachments)
1630         (when gcc
1631           (message-remove-header "gcc")
1632           (widen)
1633           (setq groups (message-unquote-tokens
1634                         (message-tokenize-header gcc " ,")))
1635           ;; Copy the article over to some group(s).
1636           (while (setq group (pop groups))
1637             (setq method (gnus-inews-group-method group)
1638                   group (mm-encode-coding-string
1639                          group
1640                          (gnus-group-name-charset method group)))
1641             (unless (gnus-check-server method)
1642               (error "Can't open server %s" (if (stringp method) method
1643                                               (car method))))
1644             (unless (gnus-request-group group t method)
1645               (gnus-request-create-group group method))
1646             (setq mml-externalize-attachments
1647                   (if (stringp gnus-gcc-externalize-attachments)
1648                       (string-match gnus-gcc-externalize-attachments group)
1649                     gnus-gcc-externalize-attachments))
1650             (save-excursion
1651               (nnheader-set-temp-buffer " *acc*")
1652               (setq message-options (with-current-buffer cur message-options))
1653               (insert-buffer-substring cur)
1654               (run-hooks 'gnus-gcc-pre-body-encode-hook)
1655               (message-encode-message-body)
1656               (run-hooks 'gnus-gcc-post-body-encode-hook)
1657               (save-restriction
1658                 (message-narrow-to-headers)
1659                 (let* ((mail-parse-charset message-default-charset)
1660                        (newsgroups-field (save-restriction
1661                                            (message-narrow-to-headers-or-head)
1662                                            (message-fetch-field "Newsgroups")))
1663                        (followup-field (save-restriction
1664                                          (message-narrow-to-headers-or-head)
1665                                          (message-fetch-field "Followup-To")))
1666                        ;; BUG: We really need to get the charset for
1667                        ;; each name in the Newsgroups and Followup-To
1668                        ;; lines to allow crossposting between group
1669                        ;; names with incompatible character sets.
1670                        ;; -- Per Abrahamsen <abraham@dina.kvl.dk> 2001-10-08.
1671                        (group-field-charset
1672                         (gnus-group-name-charset
1673                          method (or newsgroups-field "")))
1674                        (followup-field-charset
1675                         (gnus-group-name-charset
1676                          method (or followup-field "")))
1677                        (rfc2047-header-encoding-alist
1678                         (append
1679                          (when group-field-charset
1680                            (list (cons "Newsgroups" group-field-charset)))
1681                          (when followup-field-charset
1682                            (list (cons "Followup-To" followup-field-charset)))
1683                          rfc2047-header-encoding-alist)))
1684                   (mail-encode-encoded-word-buffer)))
1685               (goto-char (point-min))
1686               (when (re-search-forward
1687                      (concat "^" (regexp-quote mail-header-separator) "$")
1688                      nil t)
1689                 (replace-match "" t t ))
1690               (when (or (not (gnus-check-backend-function
1691                               'request-accept-article group))
1692                         (not (setq group-art
1693                                    (gnus-request-accept-article
1694                                     group method t t))))
1695                 (gnus-message 1 "Couldn't store article in group %s: %s"
1696                               group (gnus-status-message method)))
1697               (when (stringp method)
1698                 (setq method (gnus-server-to-method method)))
1699               (when (and (listp method)
1700                          (gnus-native-method-p method))
1701                 (setq group (gnus-group-short-name group)))
1702               (when (and group-art
1703                          ;; FIXME: Should gcc-mark-as-read work when
1704                          ;; Gnus is not running?
1705                          (gnus-alive-p))
1706                 (if (or gnus-gcc-mark-as-read
1707                         (and (boundp 'gnus-inews-mark-gcc-as-read)
1708                              (symbol-value 'gnus-inews-mark-gcc-as-read)))
1709                     (gnus-group-mark-article-read group (cdr group-art))
1710                   (with-current-buffer gnus-group-buffer
1711                     (let ((gnus-group-marked (list group))
1712                           (gnus-get-new-news-hook nil)
1713                           (inhibit-read-only t))
1714                       (gnus-group-get-new-news-this-group nil t)))))
1715               (setq options message-options)
1716               (with-current-buffer cur (setq message-options options))
1717               (kill-buffer (current-buffer)))))))))
1718
1719 (defun gnus-inews-insert-gcc (&optional group)
1720   "Insert the Gcc to say where the article is to be archived."
1721   (let* ((group (or group gnus-newsgroup-name))
1722          (group (when group (gnus-group-decoded-name group)))
1723          (var (or gnus-outgoing-message-group gnus-message-archive-group))
1724          (gcc-self-val
1725           (and group (not (gnus-virtual-group-p group))
1726                (gnus-group-find-parameter group 'gcc-self)))
1727          result
1728          (groups
1729           (cond
1730            ((null gnus-message-archive-method)
1731             ;; Ignore.
1732             nil)
1733            ((stringp var)
1734             ;; Just a single group.
1735             (list var))
1736            ((null var)
1737             ;; We don't want this.
1738             nil)
1739            ((and (listp var) (stringp (car var)))
1740             ;; A list of groups.
1741             var)
1742            ((functionp var)
1743             ;; A function.
1744             (funcall var group))
1745            (group
1746             ;; An alist of regexps/functions/forms.
1747             (while (and var
1748                         (not
1749                          (setq result
1750                                (cond
1751                                 ((and group
1752                                       (stringp (caar var)))
1753                                  ;; Regexp.
1754                                  (when (string-match (caar var) group)
1755                                    (cdar var)))
1756                                 ((and group
1757                                       (functionp (car var)))
1758                                  ;; Function.
1759                                  (funcall (car var) group))
1760                                 (t
1761                                  (eval (car var)))))))
1762               (setq var (cdr var)))
1763             result)))
1764          name)
1765     (when (and (or groups gcc-self-val)
1766                (gnus-alive-p))
1767       (when (stringp groups)
1768         (setq groups (list groups)))
1769       (save-excursion
1770         (save-restriction
1771           (message-narrow-to-headers)
1772           (goto-char (point-max))
1773           (insert "Gcc: ")
1774           (if gcc-self-val
1775               ;; Use the `gcc-self' param value instead.
1776               (progn
1777                 (insert
1778                  (if (stringp gcc-self-val)
1779                      (if (string-match " " gcc-self-val)
1780                          (concat "\"" gcc-self-val "\"")
1781                        gcc-self-val)
1782                    ;; In nndoc groups, we use the parent group name
1783                    ;; instead of the current group.
1784                    (let ((group (or (gnus-group-find-parameter
1785                                      gnus-newsgroup-name 'parent-group)
1786                                     group)))
1787                      (if (string-match " " group)
1788                          (concat "\"" group "\"")
1789                        group))))
1790                 (if (not (eq gcc-self-val 'none))
1791                     (insert "\n")
1792                   (gnus-delete-line)))
1793             ;; Use the list of groups.
1794             (while (setq name (pop groups))
1795               (let ((str (if (string-match ":" name)
1796                              name
1797                            (gnus-group-prefixed-name
1798                             name gnus-message-archive-method))))
1799                 (insert (if (string-match " " str)
1800                             (concat "\"" str "\"")
1801                           str)))
1802               (when groups
1803                 (insert " ")))
1804             (insert "\n")))))))
1805
1806 (defun gnus-mailing-list-followup-to ()
1807   "Look at the headers in the current buffer and return a Mail-Followup-To address."
1808   (let ((x-been-there (gnus-fetch-original-field "x-beenthere"))
1809         (list-post (gnus-fetch-original-field "list-post")))
1810     (when (and list-post
1811                (string-match "mailto:\\([^>]+\\)" list-post))
1812       (setq list-post (match-string 1 list-post)))
1813     (or list-post
1814         x-been-there)))
1815
1816 ;;; Posting styles.
1817
1818 (defun gnus-configure-posting-styles (&optional group-name)
1819   "Configure posting styles according to `gnus-posting-styles'."
1820   (unless gnus-inhibit-posting-styles
1821     (let ((group (or group-name gnus-newsgroup-name ""))
1822           (styles (if (gnus-buffer-live-p gnus-summary-buffer)
1823                       (with-current-buffer gnus-summary-buffer
1824                         gnus-posting-styles)
1825                     gnus-posting-styles))
1826           style match attribute value v results
1827           filep name address element)
1828       ;; If the group has a posting-style parameter, add it at the end with a
1829       ;; regexp matching everything, to be sure it takes precedence over all
1830       ;; the others.
1831       (when gnus-newsgroup-name
1832         (let ((tmp-style (gnus-group-find-parameter group 'posting-style t)))
1833           (when tmp-style
1834             (dolist (style tmp-style)
1835               (when (stringp (cadr style))
1836                 (setcdr style (list (mm-decode-coding-string (cadr style)
1837                                                              'utf-8)))))
1838             (setq styles (append styles (list (cons ".*" tmp-style)))))))
1839       ;; Go through all styles and look for matches.
1840       (dolist (style styles)
1841         (setq match (pop style))
1842         (goto-char (point-min))
1843         (when (cond
1844                ((stringp match)
1845                 ;; Regexp string match on the group name.
1846                 (string-match match group))
1847                ((eq match 'header)
1848                 ;; Obsolete format of header match.
1849                 (and (gnus-buffer-live-p gnus-article-copy)
1850                      (with-current-buffer gnus-article-copy
1851                        (save-restriction
1852                          (nnheader-narrow-to-headers)
1853                          (let ((header (message-fetch-field (pop style))))
1854                            (and header
1855                                 (string-match (pop style) header)))))))
1856                ((or (symbolp match)
1857                     (functionp match))
1858                 (cond
1859                  ((functionp match)
1860                   ;; Function to be called.
1861                   (funcall match))
1862                  ((boundp match)
1863                   ;; Variable to be checked.
1864                   (symbol-value match))))
1865                ((listp match)
1866                 (cond
1867                  ((eq (car match) 'header)
1868                   ;; New format of header match.
1869                   (and (gnus-buffer-live-p gnus-article-copy)
1870                        (with-current-buffer gnus-article-copy
1871                          (save-restriction
1872                            (nnheader-narrow-to-headers)
1873                            (let ((header (message-fetch-field (nth 1 match))))
1874                              (and header
1875                                   (string-match (nth 2 match) header)))))))
1876                  (t
1877                   ;; This is a form to be evalled.
1878                   (eval match)))))
1879           ;; We have a match, so we set the variables.
1880           (dolist (attribute style)
1881             (setq element (pop attribute)
1882                   filep nil)
1883             (setq value
1884                   (cond
1885                    ((eq (car attribute) :file)
1886                     (setq filep t)
1887                     (cadr attribute))
1888                    ((eq (car attribute) :value)
1889                     (cadr attribute))
1890                    (t
1891                     (car attribute))))
1892             ;; We get the value.
1893             (setq v
1894                   (cond
1895                    ((stringp value)
1896                     (if (and (stringp match)
1897                              (gnus-string-match-p "\\\\[&[:digit:]]" value)
1898                              (match-beginning 1))
1899                         (gnus-match-substitute-replacement value nil nil group)
1900                       value))
1901                    ((or (symbolp value)
1902                         (functionp value))
1903                     (cond ((functionp value)
1904                            (funcall value))
1905                           ((boundp value)
1906                            (symbol-value value))))
1907                    ((listp value)
1908                     (eval value))))
1909             ;; Translate obsolescent value.
1910             (cond
1911              ((eq element 'signature-file)
1912               (setq element 'signature
1913                     filep t))
1914              ((eq element 'x-face-file)
1915               (setq element 'x-face
1916                     filep t)))
1917             ;; Post-processing for the signature posting-style:
1918             (and (eq element 'signature) filep
1919                  message-signature-directory
1920                  ;; don't actually use the signature directory
1921                  ;; if message-signature-file contains a path.
1922                  (not (file-name-directory v))
1923                  (setq v (nnheader-concat message-signature-directory v)))
1924             ;; Get the contents of file elems.
1925             (when (and filep v)
1926               (setq v (with-temp-buffer
1927                         (insert-file-contents v)
1928                         (buffer-substring
1929                          (point-min)
1930                          (progn
1931                            (goto-char (point-max))
1932                            (if (zerop (skip-chars-backward "\n"))
1933                                (point)
1934                              (1+ (point))))))))
1935             (setq results (delq (assoc element results) results))
1936             (push (cons element v) results))))
1937       ;; Now we have all the styles, so we insert them.
1938       (setq name (assq 'name results)
1939             address (assq 'address results))
1940       (setq results (delq name (delq address results)))
1941       (gnus-make-local-hook 'message-setup-hook)
1942       (setq results (sort results (lambda (x y)
1943                                     (string-lessp (car x) (car y)))))
1944       (dolist (result results)
1945         (add-hook 'message-setup-hook
1946                   (cond
1947                    ((eq 'eval (car result))
1948                     'ignore)
1949                    ((eq 'body (car result))
1950                     `(lambda ()
1951                        (save-excursion
1952                          (message-goto-body)
1953                          (insert ,(cdr result)))))
1954                    ((eq 'signature (car result))
1955                     (set (make-local-variable 'message-signature) nil)
1956                     (set (make-local-variable 'message-signature-file) nil)
1957                     (if (not (cdr result))
1958                         'ignore
1959                       `(lambda ()
1960                          (save-excursion
1961                            (let ((message-signature ,(cdr result)))
1962                              (when message-signature
1963                                (message-insert-signature)))))))
1964                    (t
1965                     (let ((header
1966                            (if (symbolp (car result))
1967                                (capitalize (symbol-name (car result)))
1968                              (car result))))
1969                       `(lambda ()
1970                          (save-excursion
1971                            (message-remove-header ,header)
1972                            (let ((value ,(cdr result)))
1973                              (when value
1974                                (message-goto-eoh)
1975                                (insert ,header ": " value)
1976                                (unless (bolp)
1977                                  (insert "\n")))))))))
1978                   nil 'local))
1979       (when (or name address)
1980         (add-hook 'message-setup-hook
1981                   `(lambda ()
1982                      (set (make-local-variable 'user-mail-address)
1983                           ,(or (cdr address) user-mail-address))
1984                      (let ((user-full-name ,(or (cdr name) (user-full-name)))
1985                            (user-mail-address
1986                             ,(or (cdr address) user-mail-address)))
1987                        (save-excursion
1988                          (message-remove-header "From")
1989                          (message-goto-eoh)
1990                          (insert "From: " (message-make-from) "\n"))))
1991                   nil 'local)))))
1992
1993 ;;; Allow redefinition of functions.
1994
1995 (gnus-ems-redefine)
1996
1997 (provide 'gnus-msg)
1998
1999 ;;; gnus-msg.el ends here