code.delx.au - gnu-emacs/blob - lisp/gnus/gnus.el

   1 ;;; gnus.el --- a newsreader for GNU Emacs
   2
   3 ;; Copyright (C) 1987, 1988, 1989, 1990, 1993, 1994, 1995, 1996, 1997,
   4 ;; 1998, 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
   5
   6 ;; Author: Masanobu UMEDA <umerin@flab.flab.fujitsu.junet>
   7 ;;      Lars Magne Ingebrigtsen <larsi@gnus.org>
   8 ;; Keywords: news, mail
   9
  10 ;; This file is part of GNU Emacs.
  11
  12 ;; GNU Emacs is free software; you can redistribute it and/or modify
  13 ;; it under the terms of the GNU General Public License as published by
  14 ;; the Free Software Foundation; either version 2, or (at your option)
  15 ;; any later version.
  16
  17 ;; GNU Emacs is distributed in the hope that it will be useful,
  18 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  19 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20 ;; GNU General Public License for more details.
  21
  22 ;; You should have received a copy of the GNU General Public License
  23 ;; along with GNU Emacs; see the file COPYING.  If not, write to the
  24 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  25 ;; Boston, MA 02111-1307, USA.
  26
  27 ;;; Commentary:
  28
  29 ;;; Code:
  30
  31 (eval '(run-hooks 'gnus-load-hook))
  32
  33 (eval-when-compile (require 'cl))
  34 (require 'wid-edit)
  35 (require 'mm-util)
  36 (require 'nnheader)
  37
  38 (defgroup gnus nil
  39   "The coffee-brewing, all singing, all dancing, kitchen sink newsreader."
  40   :group 'news
  41   :group 'mail)
  42
  43 (defgroup gnus-format nil
  44   "Dealing with formatting issues."
  45   :group 'gnus)
  46
  47 (defgroup gnus-charset nil
  48   "Group character set issues."
  49   :link '(custom-manual "(gnus)Charsets")
  50   :version "21.1"
  51   :group 'gnus)
  52
  53 (defgroup gnus-cache nil
  54   "Cache interface."
  55   :link '(custom-manual "(gnus)Article Caching")
  56   :group 'gnus)
  57
  58 (defgroup gnus-registry nil
  59   "Article Registry."
  60   :group 'gnus)
  61
  62 (defgroup gnus-start nil
  63   "Starting your favorite newsreader."
  64   :group 'gnus)
  65
  66 (defgroup gnus-start-server nil
  67   "Server options at startup."
  68   :group 'gnus-start)
  69
  70 ;; These belong to gnus-group.el.
  71 (defgroup gnus-group nil
  72   "Group buffers."
  73   :link '(custom-manual "(gnus)Group Buffer")
  74   :group 'gnus)
  75
  76 (defgroup gnus-group-foreign nil
  77   "Foreign groups."
  78   :link '(custom-manual "(gnus)Foreign Groups")
  79   :group 'gnus-group)
  80
  81 (defgroup gnus-group-new nil
  82   "Automatic subscription of new groups."
  83   :group 'gnus-group)
  84
  85 (defgroup gnus-group-levels nil
  86   "Group levels."
  87   :link '(custom-manual "(gnus)Group Levels")
  88   :group 'gnus-group)
  89
  90 (defgroup gnus-group-select nil
  91   "Selecting a Group."
  92   :link '(custom-manual "(gnus)Selecting a Group")
  93   :group 'gnus-group)
  94
  95 (defgroup gnus-group-listing nil
  96   "Showing slices of the group list."
  97   :link '(custom-manual "(gnus)Listing Groups")
  98   :group 'gnus-group)
  99
 100 (defgroup gnus-group-visual nil
 101   "Sorting the group buffer."
 102   :link '(custom-manual "(gnus)Group Buffer Format")
 103   :group 'gnus-group
 104   :group 'gnus-visual)
 105
 106 (defgroup gnus-group-various nil
 107   "Various group options."
 108   :link '(custom-manual "(gnus)Scanning New Messages")
 109   :group 'gnus-group)
 110
 111 ;; These belong to gnus-sum.el.
 112 (defgroup gnus-summary nil
 113   "Summary buffers."
 114   :link '(custom-manual "(gnus)Summary Buffer")
 115   :group 'gnus)
 116
 117 (defgroup gnus-summary-exit nil
 118   "Leaving summary buffers."
 119   :link '(custom-manual "(gnus)Exiting the Summary Buffer")
 120   :group 'gnus-summary)
 121
 122 (defgroup gnus-summary-marks nil
 123   "Marks used in summary buffers."
 124   :link '(custom-manual "(gnus)Marking Articles")
 125   :group 'gnus-summary)
 126
 127 (defgroup gnus-thread nil
 128   "Ordering articles according to replies."
 129   :link '(custom-manual "(gnus)Threading")
 130   :group 'gnus-summary)
 131
 132 (defgroup gnus-summary-format nil
 133   "Formatting of the summary buffer."
 134   :link '(custom-manual "(gnus)Summary Buffer Format")
 135   :group 'gnus-summary)
 136
 137 (defgroup gnus-summary-choose nil
 138   "Choosing Articles."
 139   :link '(custom-manual "(gnus)Choosing Articles")
 140   :group 'gnus-summary)
 141
 142 (defgroup gnus-summary-maneuvering nil
 143   "Summary movement commands."
 144   :link '(custom-manual "(gnus)Summary Maneuvering")
 145   :group 'gnus-summary)
 146
 147 (defgroup gnus-picon nil
 148   "Show pictures of people, domains, and newsgroups."
 149   :group 'gnus-visual)
 150
 151 (defgroup gnus-summary-mail nil
 152   "Mail group commands."
 153   :link '(custom-manual "(gnus)Mail Group Commands")
 154   :group 'gnus-summary)
 155
 156 (defgroup gnus-summary-sort nil
 157   "Sorting the summary buffer."
 158   :link '(custom-manual "(gnus)Sorting the Summary Buffer")
 159   :group 'gnus-summary)
 160
 161 (defgroup gnus-summary-visual nil
 162   "Highlighting and menus in the summary buffer."
 163   :link '(custom-manual "(gnus)Summary Highlighting")
 164   :group 'gnus-visual
 165   :group 'gnus-summary)
 166
 167 (defgroup gnus-summary-various nil
 168   "Various summary buffer options."
 169   :link '(custom-manual "(gnus)Various Summary Stuff")
 170   :group 'gnus-summary)
 171
 172 (defgroup gnus-summary-pick nil
 173   "Pick mode in the summary buffer."
 174   :link '(custom-manual "(gnus)Pick and Read")
 175   :prefix "gnus-pick-"
 176   :group 'gnus-summary)
 177
 178 (defgroup gnus-summary-tree nil
 179   "Tree display of threads in the summary buffer."
 180   :link '(custom-manual "(gnus)Tree Display")
 181   :prefix "gnus-tree-"
 182   :group 'gnus-summary)
 183
 184 ;; Belongs to gnus-uu.el
 185 (defgroup gnus-extract-view nil
 186   "Viewing extracted files."
 187   :link '(custom-manual "(gnus)Viewing Files")
 188   :group 'gnus-extract)
 189
 190 ;; Belongs to gnus-score.el
 191 (defgroup gnus-score nil
 192   "Score and kill file handling."
 193   :group 'gnus)
 194
 195 (defgroup gnus-score-kill nil
 196   "Kill files."
 197   :group 'gnus-score)
 198
 199 (defgroup gnus-score-adapt nil
 200   "Adaptive score files."
 201   :group 'gnus-score)
 202
 203 (defgroup gnus-score-default nil
 204   "Default values for score files."
 205   :group 'gnus-score)
 206
 207 (defgroup gnus-score-expire nil
 208   "Expiring score rules."
 209   :group 'gnus-score)
 210
 211 (defgroup gnus-score-decay nil
 212   "Decaying score rules."
 213   :group 'gnus-score)
 214
 215 (defgroup gnus-score-files nil
 216   "Score and kill file names."
 217   :group 'gnus-score
 218   :group 'gnus-files)
 219
 220 (defgroup gnus-score-various nil
 221   "Various scoring and killing options."
 222   :group 'gnus-score)
 223
 224 ;; Other
 225 (defgroup gnus-visual nil
 226   "Options controlling the visual fluff."
 227   :group 'gnus
 228   :group 'faces)
 229
 230 (defgroup gnus-agent nil
 231   "Offline support for Gnus."
 232   :group 'gnus)
 233
 234 (defgroup gnus-files nil
 235   "Files used by Gnus."
 236   :group 'gnus)
 237
 238 (defgroup gnus-dribble-file nil
 239   "Auto save file."
 240   :link '(custom-manual "(gnus)Auto Save")
 241   :group 'gnus-files)
 242
 243 (defgroup gnus-newsrc nil
 244   "Storing Gnus state."
 245   :group 'gnus-files)
 246
 247 (defgroup gnus-server nil
 248   "Options related to newsservers and other servers used by Gnus."
 249   :group 'gnus)
 250
 251 (defgroup gnus-server-visual nil
 252   "Highlighting and menus in the server buffer."
 253   :group 'gnus-visual
 254   :group 'gnus-server)
 255
 256 (defgroup gnus-message '((message custom-group))
 257   "Composing replies and followups in Gnus."
 258   :group 'gnus)
 259
 260 (defgroup gnus-meta nil
 261   "Meta variables controlling major portions of Gnus.
 262 In general, modifying these variables does not take affect until Gnus
 263 is restarted, and sometimes reloaded."
 264   :group 'gnus)
 265
 266 (defgroup gnus-various nil
 267   "Other Gnus options."
 268   :link '(custom-manual "(gnus)Various Various")
 269   :group 'gnus)
 270
 271 (defgroup gnus-mime nil
 272   "Variables for controlling the Gnus MIME interface."
 273   :group 'gnus)
 274
 275 (defgroup gnus-exit nil
 276   "Exiting gnus."
 277   :link '(custom-manual "(gnus)Exiting Gnus")
 278   :group 'gnus)
 279
 280 (defgroup gnus-fun nil
 281   "Frivolous Gnus extensions."
 282   :link '(custom-manual "(gnus)Exiting Gnus")
 283   :group 'gnus)
 284
 285 (defconst gnus-version-number "5.10.6"
 286   "Version number for this version of Gnus.")
 287
 288 (defconst gnus-version (format "Gnus v%s" gnus-version-number)
 289   "Version string for this version of Gnus.")
 290
 291 (defcustom gnus-inhibit-startup-message nil
 292   "If non-nil, the startup message will not be displayed.
 293 This variable is used before `.gnus.el' is loaded, so it should
 294 be set in `.emacs' instead."
 295   :group 'gnus-start
 296   :type 'boolean)
 297
 298 (defcustom gnus-play-startup-jingle nil
 299   "If non-nil, play the Gnus jingle at startup."
 300   :group 'gnus-start
 301   :type 'boolean)
 302
 303 (unless (fboundp 'gnus-group-remove-excess-properties)
 304   (defalias 'gnus-group-remove-excess-properties 'ignore))
 305
 306 (unless (fboundp 'gnus-set-text-properties)
 307   (defalias 'gnus-set-text-properties 'set-text-properties))
 308
 309 (unless (featurep 'gnus-xmas)
 310   (defalias 'gnus-make-overlay 'make-overlay)
 311   (defalias 'gnus-delete-overlay 'delete-overlay)
 312   (defalias 'gnus-overlay-put 'overlay-put)
 313   (defalias 'gnus-move-overlay 'move-overlay)
 314   (defalias 'gnus-overlay-buffer 'overlay-buffer)
 315   (defalias 'gnus-overlay-start 'overlay-start)
 316   (defalias 'gnus-overlay-end 'overlay-end)
 317   (defalias 'gnus-extent-detached-p 'ignore)
 318   (defalias 'gnus-extent-start-open 'ignore)
 319   (defalias 'gnus-appt-select-lowest-window 'appt-select-lowest-window)
 320   (defalias 'gnus-mail-strip-quoted-names 'mail-strip-quoted-names)
 321   (defalias 'gnus-character-to-event 'identity)
 322   (defalias 'gnus-assq-delete-all 'assq-delete-all)
 323   (defalias 'gnus-add-text-properties 'add-text-properties)
 324   (defalias 'gnus-put-text-property 'put-text-property)
 325   (defvar gnus-mode-line-image-cache t)
 326   (if (fboundp 'find-image)
 327       (defun gnus-mode-line-buffer-identification (line)
 328         (let ((str (car-safe line)))
 329           (if (and (stringp str)
 330                    (string-match "^Gnus:" str))
 331               (progn (add-text-properties
 332                       0 5
 333                       (list 'display
 334                             (if (eq t gnus-mode-line-image-cache)
 335                                 (setq gnus-mode-line-image-cache
 336                                       (find-image
 337                                        '((:type xpm :file "gnus-pointer.xpm"
 338                                                 :ascent center)
 339                                          (:type xbm :file "gnus-pointer.xbm"
 340                                                 :ascent center))))
 341                               gnus-mode-line-image-cache)
 342                             'help-echo (format
 343                                         "This is %s, %s."
 344                                         gnus-version (gnus-emacs-version)))
 345                       str)
 346                      (list str))
 347             line)))
 348     (defalias 'gnus-mode-line-buffer-identification 'identity))
 349   (defalias 'gnus-characterp 'numberp)
 350   (defalias 'gnus-deactivate-mark 'deactivate-mark)
 351   (defalias 'gnus-window-edges 'window-edges)
 352   (defalias 'gnus-key-press-event-p 'numberp)
 353   ;;(defalias 'gnus-decode-rfc1522 'ignore)
 354   )
 355
 356 ;; We define these group faces here to avoid the display
 357 ;; update forced when creating new faces.
 358
 359 (defface gnus-group-news-1-face
 360   '((((class color)
 361       (background dark))
 362      (:foreground "PaleTurquoise" :bold t))
 363     (((class color)
 364       (background light))
 365      (:foreground "ForestGreen" :bold t))
 366     (t
 367      ()))
 368   "Level 1 newsgroup face.")
 369
 370 (defface gnus-group-news-1-empty-face
 371   '((((class color)
 372       (background dark))
 373      (:foreground "PaleTurquoise"))
 374     (((class color)
 375       (background light))
 376      (:foreground "ForestGreen"))
 377     (t
 378      ()))
 379   "Level 1 empty newsgroup face.")
 380
 381 (defface gnus-group-news-2-face
 382   '((((class color)
 383       (background dark))
 384      (:foreground "turquoise" :bold t))
 385     (((class color)
 386       (background light))
 387      (:foreground "CadetBlue4" :bold t))
 388     (t
 389      ()))
 390   "Level 2 newsgroup face.")
 391
 392 (defface gnus-group-news-2-empty-face
 393   '((((class color)
 394       (background dark))
 395      (:foreground "turquoise"))
 396     (((class color)
 397       (background light))
 398      (:foreground "CadetBlue4"))
 399     (t
 400      ()))
 401   "Level 2 empty newsgroup face.")
 402
 403 (defface gnus-group-news-3-face
 404   '((((class color)
 405       (background dark))
 406      (:bold t))
 407     (((class color)
 408       (background light))
 409      (:bold t))
 410     (t
 411      ()))
 412   "Level 3 newsgroup face.")
 413
 414 (defface gnus-group-news-3-empty-face
 415   '((((class color)
 416       (background dark))
 417      ())
 418     (((class color)
 419       (background light))
 420      ())
 421     (t
 422      ()))
 423   "Level 3 empty newsgroup face.")
 424
 425 (defface gnus-group-news-4-face
 426   '((((class color)
 427       (background dark))
 428      (:bold t))
 429     (((class color)
 430       (background light))
 431      (:bold t))
 432     (t
 433      ()))
 434   "Level 4 newsgroup face.")
 435
 436 (defface gnus-group-news-4-empty-face
 437   '((((class color)
 438       (background dark))
 439      ())
 440     (((class color)
 441       (background light))
 442      ())
 443     (t
 444      ()))
 445   "Level 4 empty newsgroup face.")
 446
 447 (defface gnus-group-news-5-face
 448   '((((class color)
 449       (background dark))
 450      (:bold t))
 451     (((class color)
 452       (background light))
 453      (:bold t))
 454     (t
 455      ()))
 456   "Level 5 newsgroup face.")
 457
 458 (defface gnus-group-news-5-empty-face
 459   '((((class color)
 460       (background dark))
 461      ())
 462     (((class color)
 463       (background light))
 464      ())
 465     (t
 466      ()))
 467   "Level 5 empty newsgroup face.")
 468
 469 (defface gnus-group-news-6-face
 470   '((((class color)
 471       (background dark))
 472      (:bold t))
 473     (((class color)
 474       (background light))
 475      (:bold t))
 476     (t
 477      ()))
 478   "Level 6 newsgroup face.")
 479
 480 (defface gnus-group-news-6-empty-face
 481   '((((class color)
 482       (background dark))
 483      ())
 484     (((class color)
 485       (background light))
 486      ())
 487     (t
 488      ()))
 489   "Level 6 empty newsgroup face.")
 490
 491 (defface gnus-group-news-low-face
 492   '((((class color)
 493       (background dark))
 494      (:foreground "DarkTurquoise" :bold t))
 495     (((class color)
 496       (background light))
 497      (:foreground "DarkGreen" :bold t))
 498     (t
 499      ()))
 500   "Low level newsgroup face.")
 501
 502 (defface gnus-group-news-low-empty-face
 503   '((((class color)
 504       (background dark))
 505      (:foreground "DarkTurquoise"))
 506     (((class color)
 507       (background light))
 508      (:foreground "DarkGreen"))
 509     (t
 510      ()))
 511   "Low level empty newsgroup face.")
 512
 513 (defface gnus-group-mail-1-face
 514   '((((class color)
 515       (background dark))
 516      (:foreground "aquamarine1" :bold t))
 517     (((class color)
 518       (background light))
 519      (:foreground "DeepPink3" :bold t))
 520     (t
 521      (:bold t)))
 522   "Level 1 mailgroup face.")
 523
 524 (defface gnus-group-mail-1-empty-face
 525   '((((class color)
 526       (background dark))
 527      (:foreground "aquamarine1"))
 528     (((class color)
 529       (background light))
 530      (:foreground "DeepPink3"))
 531     (t
 532      (:italic t :bold t)))
 533   "Level 1 empty mailgroup face.")
 534
 535 (defface gnus-group-mail-2-face
 536   '((((class color)
 537       (background dark))
 538      (:foreground "aquamarine2" :bold t))
 539     (((class color)
 540       (background light))
 541      (:foreground "HotPink3" :bold t))
 542     (t
 543      (:bold t)))
 544   "Level 2 mailgroup face.")
 545
 546 (defface gnus-group-mail-2-empty-face
 547   '((((class color)
 548       (background dark))
 549      (:foreground "aquamarine2"))
 550     (((class color)
 551       (background light))
 552      (:foreground "HotPink3"))
 553     (t
 554      (:bold t)))
 555   "Level 2 empty mailgroup face.")
 556
 557 (defface gnus-group-mail-3-face
 558   '((((class color)
 559       (background dark))
 560      (:foreground "aquamarine3" :bold t))
 561     (((class color)
 562       (background light))
 563      (:foreground "magenta4" :bold t))
 564     (t
 565      (:bold t)))
 566   "Level 3 mailgroup face.")
 567
 568 (defface gnus-group-mail-3-empty-face
 569   '((((class color)
 570       (background dark))
 571      (:foreground "aquamarine3"))
 572     (((class color)
 573       (background light))
 574      (:foreground "magenta4"))
 575     (t
 576      ()))
 577   "Level 3 empty mailgroup face.")
 578
 579 (defface gnus-group-mail-low-face
 580   '((((class color)
 581       (background dark))
 582      (:foreground "aquamarine4" :bold t))
 583     (((class color)
 584       (background light))
 585      (:foreground "DeepPink4" :bold t))
 586     (t
 587      (:bold t)))
 588   "Low level mailgroup face.")
 589
 590 (defface gnus-group-mail-low-empty-face
 591   '((((class color)
 592       (background dark))
 593      (:foreground "aquamarine4"))
 594     (((class color)
 595       (background light))
 596      (:foreground "DeepPink4"))
 597     (t
 598      (:bold t)))
 599   "Low level empty mailgroup face.")
 600
 601 ;; Summary mode faces.
 602
 603 (defface gnus-summary-selected-face '((t
 604                                        (:underline t)))
 605   "Face used for selected articles.")
 606
 607 (defface gnus-summary-cancelled-face
 608   '((((class color))
 609      (:foreground "yellow" :background "black")))
 610   "Face used for cancelled articles.")
 611
 612 (defface gnus-summary-high-ticked-face
 613   '((((class color)
 614       (background dark))
 615      (:foreground "pink" :bold t))
 616     (((class color)
 617       (background light))
 618      (:foreground "firebrick" :bold t))
 619     (t
 620      (:bold t)))
 621   "Face used for high interest ticked articles.")
 622
 623 (defface gnus-summary-low-ticked-face
 624   '((((class color)
 625       (background dark))
 626      (:foreground "pink" :italic t))
 627     (((class color)
 628       (background light))
 629      (:foreground "firebrick" :italic t))
 630     (t
 631      (:italic t)))
 632   "Face used for low interest ticked articles.")
 633
 634 (defface gnus-summary-normal-ticked-face
 635   '((((class color)
 636       (background dark))
 637      (:foreground "pink"))
 638     (((class color)
 639       (background light))
 640      (:foreground "firebrick"))
 641     (t
 642      ()))
 643   "Face used for normal interest ticked articles.")
 644
 645 (defface gnus-summary-high-ancient-face
 646   '((((class color)
 647       (background dark))
 648      (:foreground "SkyBlue" :bold t))
 649     (((class color)
 650       (background light))
 651      (:foreground "RoyalBlue" :bold t))
 652     (t
 653      (:bold t)))
 654   "Face used for high interest ancient articles.")
 655
 656 (defface gnus-summary-low-ancient-face
 657   '((((class color)
 658       (background dark))
 659      (:foreground "SkyBlue" :italic t))
 660     (((class color)
 661       (background light))
 662      (:foreground "RoyalBlue" :italic t))
 663     (t
 664      (:italic t)))
 665   "Face used for low interest ancient articles.")
 666
 667 (defface gnus-summary-normal-ancient-face
 668   '((((class color)
 669       (background dark))
 670      (:foreground "SkyBlue"))
 671     (((class color)
 672       (background light))
 673      (:foreground "RoyalBlue"))
 674     (t
 675      ()))
 676   "Face used for normal interest ancient articles.")
 677
 678 (defface gnus-summary-high-undownloaded-face
 679    '((((class color)
 680        (background light))
 681       (:bold t :foreground "cyan4"))
 682      (((class color) (background dark))
 683       (:bold t :foreground "LightGray"))
 684      (t (:inverse-video t :bold t)))
 685   "Face used for high interest uncached articles.")
 686
 687 (defface gnus-summary-low-undownloaded-face
 688    '((((class color)
 689        (background light))
 690       (:italic t :foreground "cyan4" :bold nil))
 691      (((class color) (background dark))
 692       (:italic t :foreground "LightGray" :bold nil))
 693      (t (:inverse-video t :italic t)))
 694   "Face used for low interest uncached articles.")
 695
 696 (defface gnus-summary-normal-undownloaded-face
 697    '((((class color)
 698        (background light))
 699       (:foreground "cyan4" :bold nil))
 700      (((class color) (background dark))
 701       (:foreground "LightGray" :bold nil))
 702      (t (:inverse-video t)))
 703   "Face used for normal interest uncached articles.")
 704
 705 (defface gnus-summary-high-unread-face
 706   '((t
 707      (:bold t)))
 708   "Face used for high interest unread articles.")
 709
 710 (defface gnus-summary-low-unread-face
 711   '((t
 712      (:italic t)))
 713   "Face used for low interest unread articles.")
 714
 715 (defface gnus-summary-normal-unread-face
 716   '((t
 717      ()))
 718   "Face used for normal interest unread articles.")
 719
 720 (defface gnus-summary-high-read-face
 721   '((((class color)
 722       (background dark))
 723      (:foreground "PaleGreen"
 724                   :bold t))
 725     (((class color)
 726       (background light))
 727      (:foreground "DarkGreen"
 728                   :bold t))
 729     (t
 730      (:bold t)))
 731   "Face used for high interest read articles.")
 732
 733 (defface gnus-summary-low-read-face
 734   '((((class color)
 735       (background dark))
 736      (:foreground "PaleGreen"
 737                   :italic t))
 738     (((class color)
 739       (background light))
 740      (:foreground "DarkGreen"
 741                   :italic t))
 742     (t
 743      (:italic t)))
 744   "Face used for low interest read articles.")
 745
 746 (defface gnus-summary-normal-read-face
 747   '((((class color)
 748       (background dark))
 749      (:foreground "PaleGreen"))
 750     (((class color)
 751       (background light))
 752      (:foreground "DarkGreen"))
 753     (t
 754      ()))
 755   "Face used for normal interest read articles.")
 756
 757
 758 ;;;
 759 ;;; Gnus buffers
 760 ;;;
 761
 762 (defvar gnus-buffers nil)
 763
 764 (defun gnus-get-buffer-create (name)
 765   "Do the same as `get-buffer-create', but store the created buffer."
 766   (or (get-buffer name)
 767       (car (push (get-buffer-create name) gnus-buffers))))
 768
 769 (defun gnus-add-buffer ()
 770   "Add the current buffer to the list of Gnus buffers."
 771   (push (current-buffer) gnus-buffers))
 772
 773 (defmacro gnus-kill-buffer (buffer)
 774   "Kill BUFFER and remove from the list of Gnus buffers."
 775   `(let ((buf ,buffer))
 776      (when (gnus-buffer-exists-p buf)
 777        (setq gnus-buffers (delete (get-buffer buf) gnus-buffers))
 778        (kill-buffer buf))))
 779
 780 (defun gnus-buffers ()
 781   "Return a list of live Gnus buffers."
 782   (while (and gnus-buffers
 783               (not (buffer-name (car gnus-buffers))))
 784     (pop gnus-buffers))
 785   (let ((buffers gnus-buffers))
 786     (while (cdr buffers)
 787       (if (buffer-name (cadr buffers))
 788           (pop buffers)
 789         (setcdr buffers (cddr buffers)))))
 790   gnus-buffers)
 791
 792 ;;; Splash screen.
 793
 794 (defvar gnus-group-buffer "*Group*")
 795
 796 (eval-and-compile
 797   (autoload 'gnus-play-jingle "gnus-audio"))
 798
 799 (defface gnus-splash-face
 800   '((((class color)
 801       (background dark))
 802      (:foreground "#888888"))
 803     (((class color)
 804       (background light))
 805      (:foreground "#888888"))
 806     (t
 807      ()))
 808   "Face for the splash screen.")
 809
 810 (defun gnus-splash ()
 811   (save-excursion
 812     (switch-to-buffer (gnus-get-buffer-create gnus-group-buffer))
 813     (let ((buffer-read-only nil))
 814       (erase-buffer)
 815       (unless gnus-inhibit-startup-message
 816         (gnus-group-startup-message)
 817         (sit-for 0)
 818         (when gnus-play-startup-jingle
 819           (gnus-play-jingle))))))
 820
 821 (defun gnus-indent-rigidly (start end arg)
 822   "Indent rigidly using only spaces and no tabs."
 823   (save-excursion
 824     (save-restriction
 825       (narrow-to-region start end)
 826       (let ((tab-width 8))
 827         (indent-rigidly start end arg)
 828         ;; We translate tabs into spaces -- not everybody uses
 829         ;; an 8-character tab.
 830         (goto-char (point-min))
 831         (while (search-forward "\t" nil t)
 832           (replace-match "        " t t))))))
 833
 834 (defvar gnus-simple-splash nil)
 835
 836 ;;(format "%02x%02x%02x" 114 66 20) "724214"
 837
 838 (defvar gnus-logo-color-alist
 839   '((flame "#cc3300" "#ff2200")
 840     (pine "#c0cc93" "#f8ffb8")
 841     (moss "#a1cc93" "#d2ffb8")
 842     (irish "#04cc90" "#05ff97")
 843     (sky "#049acc" "#05deff")
 844     (tin "#6886cc" "#82b6ff")
 845     (velvet "#7c68cc" "#8c82ff")
 846     (grape "#b264cc" "#cf7df")
 847     (labia "#cc64c2" "#fd7dff")
 848     (berry "#cc6485" "#ff7db5")
 849     (dino "#724214" "#1e3f03")
 850     (oort "#cccccc" "#888888")
 851     (storm "#666699" "#99ccff")
 852     (pdino "#9999cc" "#99ccff")
 853     (purp "#9999cc" "#666699")
 854     (no "#000000" "#ff0000")
 855     (neutral "#b4b4b4" "#878787")
 856     (september "#bf9900" "#ffcc00"))
 857   "Color alist used for the Gnus logo.")
 858
 859 (defcustom gnus-logo-color-style 'oort
 860   "*Color styles used for the Gnus logo."
 861   :type `(choice ,@(mapcar (lambda (elem) (list 'const (car elem)))
 862                            gnus-logo-color-alist))
 863   :group 'gnus-xmas)
 864
 865 (defvar gnus-logo-colors
 866   (cdr (assq gnus-logo-color-style gnus-logo-color-alist))
 867   "Colors used for the Gnus logo.")
 868
 869 (defun gnus-group-startup-message (&optional x y)
 870   "Insert startup message in current buffer."
 871   ;; Insert the message.
 872   (erase-buffer)
 873   (cond
 874    ((and
 875      (fboundp 'find-image)
 876      (display-graphic-p)
 877      (let* ((data-directory (nnheader-find-etc-directory "gnus"))
 878             (image (find-image
 879                     `((:type xpm :file "gnus.xpm"
 880                              :color-symbols
 881                              (("thing" . ,(car gnus-logo-colors))
 882                               ("shadow" . ,(cadr gnus-logo-colors))
 883                               ("oort" . "#eeeeee")
 884                               ("background" . ,(face-background 'default))))
 885                       (:type pbm :file "gnus.pbm"
 886                              ;; Account for the pbm's blackground.
 887                              :background ,(face-foreground 'gnus-splash-face)
 888                              :foreground ,(face-background 'default))
 889                       (:type xbm :file "gnus.xbm"
 890                              ;; Account for the xbm's blackground.
 891                              :background ,(face-foreground 'gnus-splash-face)
 892                              :foreground ,(face-background 'default))))))
 893        (when image
 894          (let ((size (image-size image)))
 895            (insert-char ?\n (max 0 (round (- (window-height)
 896                                              (or y (cdr size)) 1) 2)))
 897            (insert-char ?\  (max 0 (round (- (window-width)
 898                                              (or x (car size))) 2)))
 899            (insert-image image))
 900          (setq gnus-simple-splash nil)
 901          t))))
 902    (t
 903     (insert
 904      (format "              %s
 905           _    ___ _             _
 906           _ ___ __ ___  __    _ ___
 907           __   _     ___    __  ___
 908               _           ___     _
 909              _  _ __             _
 910              ___   __            _
 911                    __           _
 912                     _      _   _
 913                    _      _    _
 914                       _  _    _
 915                   __  ___
 916                  _   _ _     _
 917                 _   _
 918               _    _
 919              _    _
 920             _
 921           __
 922
 923 "
 924              ""))
 925     ;; And then hack it.
 926     (gnus-indent-rigidly (point-min) (point-max)
 927                          (/ (max (- (window-width) (or x 46)) 0) 2))
 928     (goto-char (point-min))
 929     (forward-line 1)
 930     (let* ((pheight (count-lines (point-min) (point-max)))
 931            (wheight (window-height))
 932            (rest (- wheight pheight)))
 933       (insert (make-string (max 0 (* 2 (/ rest 3))) ?\n)))
 934     ;; Fontify some.
 935     (put-text-property (point-min) (point-max) 'face 'gnus-splash-face)
 936     (setq gnus-simple-splash t)))
 937   (goto-char (point-min))
 938   (setq mode-line-buffer-identification (concat " " gnus-version))
 939   (set-buffer-modified-p t))
 940
 941 (eval-when (load)
 942   (let ((command (format "%s" this-command)))
 943     (when (string-match "gnus" command)
 944       (if (string-match "gnus-other-frame" command)
 945           (gnus-get-buffer-create gnus-group-buffer)
 946         (gnus-splash)))))
 947
 948 ;;; Do the rest.
 949
 950 (require 'gnus-util)
 951 (require 'nnheader)
 952
 953 (defcustom gnus-parameters nil
 954   "Alist of group parameters.
 955
 956 For example:
 957    ((\"mail\\\\..*\"  (gnus-show-threads nil)
 958                   (gnus-use-scoring nil)
 959                   (gnus-summary-line-format
 960                         \"%U%R%z%I%(%[%d:%ub%-23,23f%]%) %s\\n\")
 961                   (gcc-self . t)
 962                   (display . all))
 963      (\"mail\\\\.me\" (gnus-use-scoring  t))
 964      (\"list\\\\..*\" (total-expire . t)
 965                   (broken-reply-to . t)))"
 966   :group 'gnus-group-various
 967   :type '(repeat (cons regexp
 968                        (repeat sexp))))
 969
 970 (defvar gnus-group-parameters-more nil)
 971
 972 (defmacro gnus-define-group-parameter (param &rest rest)
 973   "Define a group parameter PARAM.
 974 REST is a plist of following:
 975 :type               One of `bool', `list' or nil.
 976 :function           The name of the function.
 977 :function-document  The documentation of the function.
 978 :parameter-type     The type for customizing the parameter.
 979 :parameter-document The documentation for the parameter.
 980 :variable           The name of the variable.
 981 :variable-document  The documentation for the variable.
 982 :variable-group     The group for customizing the variable.
 983 :variable-type      The type for customizing the variable.
 984 :variable-default   The default value of the variable."
 985   (let* ((type (plist-get rest :type))
 986          (parameter-type (plist-get rest :parameter-type))
 987          (parameter-document (plist-get rest :parameter-document))
 988          (function (or (plist-get rest :function)
 989                        (intern (format "gnus-parameter-%s" param))))
 990          (function-document (or (plist-get rest :function-document) ""))
 991          (variable (or (plist-get rest :variable)
 992                        (intern (format "gnus-parameter-%s-alist" param))))
 993          (variable-document (or (plist-get rest :variable-document) ""))
 994          (variable-group (plist-get rest :variable-group))
 995          (variable-type (or (plist-get rest :variable-type)
 996                             `(quote (repeat
 997                                      (list (regexp :tag "Group")
 998                                            ,(car (cdr parameter-type)))))))
 999          (variable-default (plist-get rest :variable-default)))
1000     (list
1001      'progn
1002      `(defcustom ,variable ,variable-default
1003         ,variable-document
1004         :group 'gnus-group-parameter
1005         :group ',variable-group
1006         :type ,variable-type)
1007      `(setq gnus-group-parameters-more
1008             (delq (assq ',param gnus-group-parameters-more)
1009                   gnus-group-parameters-more))
1010      `(add-to-list 'gnus-group-parameters-more
1011                    (list ',param
1012                          ,parameter-type
1013                          ,parameter-document))
1014      (if (eq type 'bool)
1015          `(defun ,function (name)
1016             ,function-document
1017             (let ((params (gnus-group-find-parameter name))
1018                   val)
1019               (cond
1020                ((memq ',param params)
1021                 t)
1022                ((setq val (assq ',param params))
1023                 (cdr val))
1024                ((stringp ,variable)
1025                 (string-match ,variable name))
1026                (,variable
1027                 (let ((alist ,variable)
1028                       elem value)
1029                   (while (setq elem (pop alist))
1030                     (when (and name
1031                                (string-match (car elem) name))
1032                       (setq alist nil
1033                             value (cdr elem))))
1034                   (if (consp value) (car value) value))))))
1035        `(defun ,function (name)
1036           ,function-document
1037           (and name
1038                (or (gnus-group-find-parameter name ',param ,(and type t))
1039                    (let ((alist ,variable)
1040                          elem value)
1041                      (while (setq elem (pop alist))
1042                        (when (and name
1043                                   (string-match (car elem) name))
1044                          (setq alist nil
1045                                value (cdr elem))))
1046                      ,(if type
1047                           'value
1048                         '(if (consp value) (car value) value))))))))))
1049
1050 (defcustom gnus-home-directory "~/"
1051   "Directory variable that specifies the \"home\" directory.
1052 All other Gnus file and directory variables are initialized from this variable."
1053   :group 'gnus-files
1054   :type 'directory)
1055
1056 (defcustom gnus-directory (or (getenv "SAVEDIR")
1057                               (nnheader-concat gnus-home-directory "News/"))
1058   "*Directory variable from which all other Gnus file variables are derived.
1059
1060 Note that Gnus is mostly loaded when the `.gnus.el' file is read.
1061 This means that other directory variables that are initialized from
1062 this variable won't be set properly if you set this variable in `.gnus.el'.
1063 Set this variable in `.emacs' instead."
1064   :group 'gnus-files
1065   :type 'directory)
1066
1067 (defcustom gnus-default-directory nil
1068   "*Default directory for all Gnus buffers."
1069   :group 'gnus-files
1070   :type '(choice (const :tag "current" nil)
1071                  directory))
1072
1073 ;; Site dependent variables.  These variables should be defined in
1074 ;; paths.el.
1075
1076 (defvar gnus-default-nntp-server nil
1077   "Specify a default NNTP server.
1078 This variable should be defined in paths.el, and should never be set
1079 by the user.
1080 If you want to change servers, you should use `gnus-select-method'.
1081 See the documentation to that variable.")
1082
1083 ;; Don't touch this variable.
1084 (defvar gnus-nntp-service "nntp"
1085   "NNTP service name (\"nntp\" or 119).
1086 This is an obsolete variable, which is scarcely used.  If you use an
1087 nntp server for your newsgroup and want to change the port number
1088 used to 899, you would say something along these lines:
1089
1090  (setq gnus-select-method '(nntp \"my.nntp.server\" (nntp-port-number 899)))")
1091
1092 (defcustom gnus-nntpserver-file "/etc/nntpserver"
1093   "A file with only the name of the nntp server in it."
1094   :group 'gnus-files
1095   :group 'gnus-server
1096   :type 'file)
1097
1098 (defun gnus-getenv-nntpserver ()
1099   "Find default nntp server.
1100 Check the NNTPSERVER environment variable and the
1101 `gnus-nntpserver-file' file."
1102   (or (getenv "NNTPSERVER")
1103       (and (file-readable-p gnus-nntpserver-file)
1104            (with-temp-buffer
1105              (insert-file-contents gnus-nntpserver-file)
1106              (let ((name (buffer-string)))
1107                (unless (string-match "\\`[ \t\n]*$" name)
1108                  name))))))
1109
1110 (defcustom gnus-select-method
1111   (condition-case nil
1112       (nconc
1113        (list 'nntp (or (condition-case nil
1114                            (gnus-getenv-nntpserver)
1115                          (error nil))
1116                        (when (and gnus-default-nntp-server
1117                                   (not (string= gnus-default-nntp-server "")))
1118                          gnus-default-nntp-server)
1119                        "news"))
1120        (if (or (null gnus-nntp-service)
1121                (equal gnus-nntp-service "nntp"))
1122            nil
1123          (list gnus-nntp-service)))
1124     (error nil))
1125   "Default method for selecting a newsgroup.
1126 This variable should be a list, where the first element is how the
1127 news is to be fetched, the second is the address.
1128
1129 For instance, if you want to get your news via \"flab.flab.edu\" using
1130 NNTP, you could say:
1131
1132 \(setq gnus-select-method '(nntp \"flab.flab.edu\"))
1133
1134 If you want to use your local spool, say:
1135
1136 \(setq gnus-select-method (list 'nnspool (system-name)))
1137
1138 If you use this variable, you must set `gnus-nntp-server' to nil.
1139
1140 There is a lot more to know about select methods and virtual servers -
1141 see the manual for details."
1142   :group 'gnus-server
1143   :type 'gnus-select-method)
1144
1145 (defcustom gnus-message-archive-method "archive"
1146   "*Method used for archiving messages you've sent.
1147 This should be a mail method."
1148   :group 'gnus-server
1149   :group 'gnus-message
1150   :type '(choice (const :tag "Default archive method" "archive")
1151                  gnus-select-method))
1152
1153 (defcustom gnus-message-archive-group nil
1154   "*Name of the group in which to save the messages you've written.
1155 This can either be a string; a list of strings; or an alist
1156 of regexps/functions/forms to be evaluated to return a string (or a list
1157 of strings).  The functions are called with the name of the current
1158 group (or nil) as a parameter.
1159
1160 If you want to save your mail in one group and the news articles you
1161 write in another group, you could say something like:
1162
1163  \(setq gnus-message-archive-group
1164         '((if (message-news-p)
1165               \"misc-news\"
1166             \"misc-mail\")))
1167
1168 Normally the group names returned by this variable should be
1169 unprefixed -- which implicitly means \"store on the archive server\".
1170 However, you may wish to store the message on some other server.  In
1171 that case, just return a fully prefixed name of the group --
1172 \"nnml+private:mail.misc\", for instance."
1173   :group 'gnus-message
1174   :type '(choice (const :tag "none" nil)
1175                  function
1176                  sexp
1177                  string))
1178
1179 (defcustom gnus-secondary-servers nil
1180   "List of NNTP servers that the user can choose between interactively.
1181 To make Gnus query you for a server, you have to give `gnus' a
1182 non-numeric prefix - `C-u M-x gnus', in short."
1183   :group 'gnus-server
1184   :type '(repeat string))
1185
1186 (defcustom gnus-nntp-server nil
1187   "*The name of the host running the NNTP server.
1188 This variable is semi-obsolete.  Use the `gnus-select-method'
1189 variable instead."
1190   :group 'gnus-server
1191   :type '(choice (const :tag "disable" nil)
1192                  string))
1193
1194 (defcustom gnus-secondary-select-methods nil
1195   "A list of secondary methods that will be used for reading news.
1196 This is a list where each element is a complete select method (see
1197 `gnus-select-method').
1198
1199 If, for instance, you want to read your mail with the nnml back end,
1200 you could set this variable:
1201
1202 \(setq gnus-secondary-select-methods '((nnml \"\")))"
1203   :group 'gnus-server
1204   :type '(repeat gnus-select-method))
1205
1206 (defvar gnus-backup-default-subscribed-newsgroups
1207   '("news.announce.newusers" "news.groups.questions" "gnu.emacs.gnus")
1208   "Default default new newsgroups the first time Gnus is run.
1209 Should be set in paths.el, and shouldn't be touched by the user.")
1210
1211 (defcustom gnus-local-domain nil
1212   "Local domain name without a host name.
1213 The DOMAINNAME environment variable is used instead if it is defined.
1214 If the function `system-name' returns the full Internet name, there is
1215 no need to set this variable."
1216   :group 'gnus-message
1217   :type '(choice (const :tag "default" nil)
1218                  string))
1219
1220 (defvar gnus-local-organization nil
1221   "String with a description of what organization (if any) the user belongs to.
1222 Obsolete variable; use `message-user-organization' instead.")
1223
1224 ;; Customization variables
1225
1226 (defcustom gnus-refer-article-method nil
1227   "Preferred method for fetching an article by Message-ID.
1228 If you are reading news from the local spool (with nnspool), fetching
1229 articles by Message-ID is painfully slow.  By setting this method to an
1230 nntp method, you might get acceptable results.
1231
1232 The value of this variable must be a valid select method as discussed
1233 in the documentation of `gnus-select-method'.
1234
1235 It can also be a list of select methods, as well as the special symbol
1236 `current', which means to use the current select method.  If it is a
1237 list, Gnus will try all the methods in the list until it finds a match."
1238   :group 'gnus-server
1239   :type '(choice (const :tag "default" nil)
1240                  (const current)
1241                  (const :tag "Google" (nnweb "refer" (nnweb-type google)))
1242                  gnus-select-method
1243                  (repeat :menu-tag "Try multiple"
1244                          :tag "Multiple"
1245                          :value (current (nnweb "refer" (nnweb-type google)))
1246                          (choice :tag "Method"
1247                                  (const current)
1248                                  (const :tag "Google"
1249                                         (nnweb "refer" (nnweb-type google)))
1250                                  gnus-select-method))))
1251
1252 (defcustom gnus-group-faq-directory
1253   '("/ftp@mirrors.aol.com:/pub/rtfm/usenet/"
1254     "/ftp@sunsite.doc.ic.ac.uk:/pub/usenet/news-faqs/"
1255     "/ftp@src.doc.ic.ac.uk:/usenet/news-FAQS/"
1256     "/ftp@ftp.seas.gwu.edu:/pub/rtfm/"
1257     "/ftp@ftp.pasteur.fr:/pub/FAQ/"
1258     "/ftp@rtfm.mit.edu:/pub/usenet/"
1259     "/ftp@ftp.uni-paderborn.de:/pub/FAQ/"
1260     "/ftp@ftp.sunet.se:/pub/usenet/"
1261     "/ftp@nctuccca.nctu.edu.tw:/pub/Documents/rtfm/usenet-by-group/"
1262     "/ftp@hwarang.postech.ac.kr:/pub/usenet/"
1263     "/ftp@ftp.hk.super.net:/mirror/faqs/")
1264   "*Directory where the group FAQs are stored.
1265 This will most commonly be on a remote machine, and the file will be
1266 fetched by ange-ftp.
1267
1268 This variable can also be a list of directories.  In that case, the
1269 first element in the list will be used by default.  The others can
1270 be used when being prompted for a site.
1271
1272 Note that Gnus uses an aol machine as the default directory.  If this
1273 feels fundamentally unclean, just think of it as a way to finally get
1274 something of value back from them.
1275
1276 If the default site is too slow, try one of these:
1277
1278    North America: mirrors.aol.com                /pub/rtfm/usenet
1279                   ftp.seas.gwu.edu               /pub/rtfm
1280                   rtfm.mit.edu                   /pub/usenet
1281    Europe:        ftp.uni-paderborn.de           /pub/FAQ
1282                   src.doc.ic.ac.uk               /usenet/news-FAQS
1283                   ftp.sunet.se                   /pub/usenet
1284                   ftp.pasteur.fr                 /pub/FAQ
1285    Asia:          nctuccca.nctu.edu.tw           /pub/Documents/rtfm/usenet-by-group/
1286                   hwarang.postech.ac.kr          /pub/usenet
1287                   ftp.hk.super.net               /mirror/faqs"
1288   :group 'gnus-group-various
1289   :type '(choice directory
1290                  (repeat directory)))
1291
1292 (defcustom gnus-group-charter-alist
1293   '(("no" . (concat "http://no.news-admin.org/charter/" name ".txt"))
1294     ("de" . (concat "http://purl.net/charta/" name ".html"))
1295     ("dk" . (concat "http://www.usenet.dk/grupper.pl?get=" name))
1296     ("england" . (concat "http://england.news-admin.org/charters/" name))
1297     ("fr" . (concat "http://www.usenet-fr.net/fur/chartes/" name ".html"))
1298     ("europa" . (concat "http://www.europa.usenet.eu.org/chartas/charta-en-"
1299                         (gnus-replace-in-string name "europa\\." "") ".html"))
1300     ("nl" . (concat "http://www.xs4all.nl/~sister/usenet/charters/" name))
1301     ("aus" . (concat "http://aus.news-admin.org/groupinfo.cgi/" name))
1302     ("pl" . (concat "http://www.usenet.pl/opisy/" name))
1303     ("ch" . (concat "http://www.use-net.ch/Usenet/charter.html#" name))
1304     ("at" . (concat "http://www.usenet.at/chartas/" name "/charta"))
1305     ("uk" . (concat "http://www.usenet.org.uk/" name ".html"))
1306     ("dfw" . (concat "http://www.cirr.com/dfw/charters/" name ".html"))
1307     ("se" . (concat "http://www.usenet-se.net/Reglementen/"
1308                     (gnus-replace-in-string name "\\." "_") ".html"))
1309     ("milw" . (concat "http://usenet.mil.wi.us/"
1310                       (gnus-replace-in-string name "milw\\." "") "-charter"))
1311     ("ca" . (concat "http://www.sbay.org/ca/charter-" name ".html"))
1312     ("netins" . (concat "http://www.netins.net/usenet/charter/"
1313                         (gnus-replace-in-string name "\\." "-") "-charter.html")))
1314   "*An alist of (HIERARCHY . FORM) pairs used to construct the URL of a charter.
1315 When FORM is evaluated `name' is bound to the name of the group."
1316   :group 'gnus-group-various
1317   :type '(repeat (cons (string :tag "Hierarchy") (sexp :tag "Form"))))
1318
1319 (defcustom gnus-group-fetch-control-use-browse-url nil
1320   "*Non-nil means that control messages are displayed using `browse-url'.
1321 Otherwise they are fetched with ange-ftp and displayed in an ephemeral
1322 group."
1323   :group 'gnus-group-various
1324   :type 'boolean)
1325
1326 (defcustom gnus-use-cross-reference t
1327   "*Non-nil means that cross referenced articles will be marked as read.
1328 If nil, ignore cross references.  If t, mark articles as read in
1329 subscribed newsgroups.  If neither t nor nil, mark as read in all
1330 newsgroups."
1331   :group 'gnus-server
1332   :type '(choice (const :tag "off" nil)
1333                  (const :tag "subscribed" t)
1334                  (sexp :format "all"
1335                        :value always)))
1336
1337 (defcustom gnus-process-mark ?#
1338   "*Process mark."
1339   :group 'gnus-group-visual
1340   :group 'gnus-summary-marks
1341   :type 'character)
1342
1343 (defcustom gnus-large-newsgroup 200
1344   "*The number of articles which indicates a large newsgroup.
1345 If the number of articles in a newsgroup is greater than this value,
1346 confirmation is required for selecting the newsgroup.
1347 If it is nil, no confirmation is required."
1348   :group 'gnus-group-select
1349   :type '(choice (const :tag "No limit" nil)
1350                  integer))
1351
1352 (defcustom gnus-use-long-file-name (not (memq system-type '(usg-unix-v xenix)))
1353   "*Non-nil means that the default name of a file to save articles in is the group name.
1354 If it's nil, the directory form of the group name is used instead.
1355
1356 If this variable is a list, and the list contains the element
1357 `not-score', long file names will not be used for score files; if it
1358 contains the element `not-save', long file names will not be used for
1359 saving; and if it contains the element `not-kill', long file names
1360 will not be used for kill files.
1361
1362 Note that the default for this variable varies according to what system
1363 type you're using.  On `usg-unix-v' and `xenix' this variable defaults
1364 to nil while on all other systems it defaults to t."
1365   :group 'gnus-start
1366   :type '(radio (sexp :format "Non-nil\n"
1367                       :match (lambda (widget value)
1368                                (and value (not (listp value))))
1369                       :value t)
1370                 (const nil)
1371                 (checklist (const :format "%v " not-score)
1372                            (const :format "%v " not-save)
1373                            (const not-kill))))
1374
1375 (defcustom gnus-kill-files-directory gnus-directory
1376   "*Name of the directory where kill files will be stored (default \"~/News\")."
1377   :group 'gnus-score-files
1378   :group 'gnus-score-kill
1379   :type 'directory)
1380
1381 (defcustom gnus-save-score nil
1382   "*If non-nil, save group scoring info."
1383   :group 'gnus-score-various
1384   :group 'gnus-start
1385   :type 'boolean)
1386
1387 (defcustom gnus-use-undo t
1388   "*If non-nil, allow undoing in Gnus group mode buffers."
1389   :group 'gnus-meta
1390   :type 'boolean)
1391
1392 (defcustom gnus-use-adaptive-scoring nil
1393   "*If non-nil, use some adaptive scoring scheme.
1394 If a list, then the values `word' and `line' are meaningful.  The
1395 former will perform adaption on individual words in the subject
1396 header while `line' will perform adaption on several headers."
1397   :group 'gnus-meta
1398   :group 'gnus-score-adapt
1399   :type '(set (const word) (const line)))
1400
1401 (defcustom gnus-use-cache 'passive
1402   "*If nil, Gnus will ignore the article cache.
1403 If `passive', it will allow entering (and reading) articles
1404 explicitly entered into the cache.  If anything else, use the
1405 cache to the full extent of the law."
1406   :group 'gnus-meta
1407   :group 'gnus-cache
1408   :type '(choice (const :tag "off" nil)
1409                  (const :tag "passive" passive)
1410                  (const :tag "active" t)))
1411
1412 (defcustom gnus-use-trees nil
1413   "*If non-nil, display a thread tree buffer."
1414   :group 'gnus-meta
1415   :type 'boolean)
1416
1417 (defcustom gnus-use-grouplens nil
1418   "*If non-nil, use GroupLens ratings."
1419   :group 'gnus-meta
1420   :type 'boolean)
1421
1422 (defcustom gnus-keep-backlog 20
1423   "*If non-nil, Gnus will keep read articles for later re-retrieval.
1424 If it is a number N, then Gnus will only keep the last N articles
1425 read.  If it is neither nil nor a number, Gnus will keep all read
1426 articles.  This is not a good idea."
1427   :group 'gnus-meta
1428   :type '(choice (const :tag "off" nil)
1429                  integer
1430                  (sexp :format "all"
1431                        :value t)))
1432
1433 (defcustom gnus-use-nocem nil
1434   "*If non-nil, Gnus will read NoCeM cancel messages."
1435   :group 'gnus-meta
1436   :type 'boolean)
1437
1438 (defcustom gnus-suppress-duplicates nil
1439   "*If non-nil, Gnus will mark duplicate copies of the same article as read."
1440   :group 'gnus-meta
1441   :type 'boolean)
1442
1443 (defcustom gnus-use-scoring t
1444   "*If non-nil, enable scoring."
1445   :group 'gnus-meta
1446   :type 'boolean)
1447
1448 (defcustom gnus-summary-prepare-exit-hook
1449   '(gnus-summary-expire-articles)
1450   "*A hook called when preparing to exit from the summary buffer.
1451 It calls `gnus-summary-expire-articles' by default."
1452   :group 'gnus-summary-exit
1453   :type 'hook)
1454
1455 (defcustom gnus-novice-user t
1456   "*Non-nil means that you are a Usenet novice.
1457 If non-nil, verbose messages may be displayed and confirmations may be
1458 required."
1459   :group 'gnus-meta
1460   :type 'boolean)
1461
1462 (defcustom gnus-expert-user nil
1463   "*Non-nil means that you will never be asked for confirmation about anything.
1464 That doesn't mean *anything* anything; particularly destructive
1465 commands will still require prompting."
1466   :group 'gnus-meta
1467   :type 'boolean)
1468
1469 (defcustom gnus-interactive-catchup t
1470   "*If non-nil, require your confirmation when catching up a group."
1471   :group 'gnus-group-select
1472   :type 'boolean)
1473
1474 (defcustom gnus-interactive-exit t
1475   "*If non-nil, require your confirmation when exiting Gnus."
1476   :group 'gnus-exit
1477   :type 'boolean)
1478
1479 (defcustom gnus-extract-address-components 'gnus-extract-address-components
1480   "*Function for extracting address components from a From header.
1481 Two pre-defined function exist: `gnus-extract-address-components',
1482 which is the default, quite fast, and too simplistic solution, and
1483 `mail-extract-address-components', which works much better, but is
1484 slower."
1485   :group 'gnus-summary-format
1486   :type '(radio (function-item gnus-extract-address-components)
1487                 (function-item mail-extract-address-components)
1488                 (function :tag "Other")))
1489
1490 (defcustom gnus-carpal nil
1491   "*If non-nil, display clickable icons."
1492   :group 'gnus-meta
1493   :type 'boolean)
1494
1495 (defcustom gnus-shell-command-separator ";"
1496   "String used to separate shell commands."
1497   :group 'gnus-files
1498   :type 'string)
1499
1500 (defcustom gnus-valid-select-methods
1501   '(("nntp" post address prompt-address physical-address)
1502     ("nnspool" post address)
1503     ("nnvirtual" post-mail virtual prompt-address)
1504     ("nnmbox" mail respool address)
1505     ("nnml" post-mail respool address)
1506     ("nnmh" mail respool address)
1507     ("nndir" post-mail prompt-address physical-address)
1508     ("nneething" none address prompt-address physical-address)
1509     ("nndoc" none address prompt-address)
1510     ("nnbabyl" mail address respool)
1511     ("nnkiboze" post virtual)
1512     ("nnsoup" post-mail address)
1513     ("nndraft" post-mail)
1514     ("nnfolder" mail respool address)
1515     ("nngateway" post-mail address prompt-address physical-address)
1516     ("nnweb" none)
1517     ("nngoogle" post)
1518     ("nnslashdot" post)
1519     ("nnultimate" none)
1520     ("nnrss" none)
1521     ("nnwfm" none)
1522     ("nnwarchive" none)
1523     ("nnlistserv" none)
1524     ("nnagent" post-mail)
1525     ("nnimap" post-mail address prompt-address physical-address)
1526     ("nnmaildir" mail respool address)
1527     ("nnnil" none))
1528   "*An alist of valid select methods.
1529 The first element of each list lists should be a string with the name
1530 of the select method.  The other elements may be the category of
1531 this method (i. e., `post', `mail', `none' or whatever) or other
1532 properties that this method has (like being respoolable).
1533 If you implement a new select method, all you should have to change is
1534 this variable.  I think."
1535   :group 'gnus-server
1536   :type '(repeat (group (string :tag "Name")
1537                         (radio-button-choice (const :format "%v " post)
1538                                              (const :format "%v " mail)
1539                                              (const :format "%v " none)
1540                                              (const post-mail))
1541                         (checklist :inline t
1542                                    (const :format "%v " address)
1543                                    (const :format "%v " prompt-address)
1544                                    (const :format "%v " physical-address)
1545                                    (const :format "%v " virtual)
1546                                    (const respool)))))
1547
1548 (defun gnus-redefine-select-method-widget ()
1549   "Recomputes the select-method widget based on the value of
1550 `gnus-valid-select-methods'."
1551   (define-widget 'gnus-select-method 'list
1552     "Widget for entering a select method."
1553     :value '(nntp "")
1554     :tag "Select Method"
1555     :args `((choice :tag "Method"
1556                     ,@(mapcar (lambda (entry)
1557                                 (list 'const :format "%v\n"
1558                                       (intern (car entry))))
1559                               gnus-valid-select-methods)
1560                     (symbol :tag "other"))
1561             (string :tag "Address")
1562             (repeat :tag "Options"
1563                     :inline t
1564                     (list :format "%v"
1565                           variable
1566                           (sexp :tag "Value"))))))
1567
1568 (gnus-redefine-select-method-widget)
1569
1570 (defcustom gnus-updated-mode-lines '(group article summary tree)
1571   "List of buffers that should update their mode lines.
1572 The list may contain the symbols `group', `article', `tree' and
1573 `summary'.  If the corresponding symbol is present, Gnus will keep
1574 that mode line updated with information that may be pertinent.
1575 If this variable is nil, screen refresh may be quicker."
1576   :group 'gnus-various
1577   :type '(set (const group)
1578               (const article)
1579               (const summary)
1580               (const tree)))
1581
1582 ;; Added by Keinonen Kari <kk85613@cs.tut.fi>.
1583 (defcustom gnus-mode-non-string-length nil
1584   "*Max length of mode-line non-string contents.
1585 If this is nil, Gnus will take space as is needed, leaving the rest
1586 of the mode line intact.  Note that the default of nil is unlikely
1587 to be desirable; see the manual for further details."
1588   :group 'gnus-various
1589   :type '(choice (const nil)
1590                  integer))
1591
1592 ;; There should be special validation for this.
1593 (define-widget 'gnus-email-address 'string
1594   "An email address.")
1595
1596 (gnus-define-group-parameter
1597  to-address
1598  :function-document
1599  "Return GROUP's to-address."
1600  :variable-document
1601  "*Alist of group regexps and correspondent to-addresses."
1602  :parameter-type '(gnus-email-address :tag "To Address")
1603  :parameter-document "\
1604 This will be used when doing followups and posts.
1605
1606 This is primarily useful in mail groups that represent closed
1607 mailing lists--mailing lists where it's expected that everybody that
1608 writes to the mailing list is subscribed to it.  Since using this
1609 parameter ensures that the mail only goes to the mailing list itself,
1610 it means that members won't receive two copies of your followups.
1611
1612 Using `to-address' will actually work whether the group is foreign or
1613 not.  Let's say there's a group on the server that is called
1614 `fa.4ad-l'.  This is a real newsgroup, but the server has gotten the
1615 articles from a mail-to-news gateway.  Posting directly to this group
1616 is therefore impossible--you have to send mail to the mailing list
1617 address instead.
1618
1619 The gnus-group-split mail splitting mechanism will behave as if this
1620 address was listed in gnus-group-split Addresses (see below).")
1621
1622 (gnus-define-group-parameter
1623  to-list
1624  :function-document
1625  "Return GROUP's to-list."
1626  :variable-document
1627  "*Alist of group regexps and correspondent to-lists."
1628  :parameter-type '(gnus-email-address :tag "To List")
1629  :parameter-document "\
1630 This address will be used when doing a `a' in the group.
1631
1632 It is totally ignored when doing a followup--except that if it is
1633 present in a news group, you'll get mail group semantics when doing
1634 `f'.
1635
1636 The gnus-group-split mail splitting mechanism will behave as if this
1637 address was listed in gnus-group-split Addresses (see below).")
1638
1639 (gnus-define-group-parameter
1640  subscribed
1641  :type bool
1642  :function-document
1643  "Return GROUP's subscription status."
1644  :variable-document
1645  "*Groups which are automatically considered subscribed."
1646  :parameter-type '(const :tag "Subscribed" t)
1647  :parameter-document "\
1648 Gnus assumed that you are subscribed to the To/List address.
1649
1650 When constructing a list of subscribed groups using
1651 `gnus-find-subscribed-addresses', Gnus includes the To address given
1652 above, or the list address (if the To address has not been set).")
1653
1654 (gnus-define-group-parameter
1655  auto-expire
1656  :type bool
1657  :function gnus-group-auto-expirable-p
1658  :function-document
1659  "Check whether GROUP is auto-expirable or not."
1660  :variable gnus-auto-expirable-newsgroups
1661  :variable-default nil
1662  :variable-document
1663  "*Groups in which to automatically mark read articles as expirable.
1664 If non-nil, this should be a regexp that should match all groups in
1665 which to perform auto-expiry.  This only makes sense for mail groups."
1666  :variable-group nnmail-expire
1667  :variable-type '(choice (const nil)
1668                          regexp)
1669  :parameter-type '(const :tag "Automatic Expire" t)
1670  :parameter-document
1671  "All articles that are read will be marked as expirable.")
1672
1673 (gnus-define-group-parameter
1674  total-expire
1675  :type bool
1676  :function gnus-group-total-expirable-p
1677  :function-document
1678  "Check whether GROUP is total-expirable or not."
1679  :variable gnus-total-expirable-newsgroups
1680  :variable-default nil
1681  :variable-document
1682  "*Groups in which to perform expiry of all read articles.
1683 Use with extreme caution.  All groups that match this regexp will be
1684 expiring - which means that all read articles will be deleted after
1685 \(say) one week.         (This only goes for mail groups and the like, of
1686 course.)"
1687  :variable-group nnmail-expire
1688  :variable-type '(choice (const nil)
1689                          regexp)
1690  :parameter-type '(const :tag "Total Expire" t)
1691  :parameter-document
1692  "All read articles will be put through the expiry process
1693
1694 This happens even if they are not marked as expirable.
1695 Use with caution.")
1696
1697 (gnus-define-group-parameter
1698  charset
1699  :function-document
1700  "Return the default charset of GROUP."
1701  :variable gnus-group-charset-alist
1702  :variable-default
1703  '(("\\(^\\|:\\)hk\\>\\|\\(^\\|:\\)tw\\>\\|\\<big5\\>" cn-big5)
1704    ("\\(^\\|:\\)cn\\>\\|\\<chinese\\>" cn-gb-2312)
1705    ("\\(^\\|:\\)fj\\>\\|\\(^\\|:\\)japan\\>" iso-2022-jp-2)
1706    ("\\(^\\|:\\)tnn\\>\\|\\(^\\|:\\)pin\\>\\|\\(^\\|:\\)sci.lang.japan" iso-2022-7bit)
1707    ("\\(^\\|:\\)relcom\\>" koi8-r)
1708    ("\\(^\\|:\\)fido7\\>" koi8-r)
1709    ("\\(^\\|:\\)\\(cz\\|hun\\|pl\\|sk\\|hr\\)\\>" iso-8859-2)
1710    ("\\(^\\|:\\)israel\\>" iso-8859-1)
1711    ("\\(^\\|:\\)han\\>" euc-kr)
1712    ("\\(^\\|:\\)alt.chinese.text.big5\\>" chinese-big5)
1713    ("\\(^\\|:\\)soc.culture.vietnamese\\>" vietnamese-viqr)
1714    ("\\(^\\|:\\)\\(comp\\|rec\\|alt\\|sci\\|soc\\|news\\|gnu\\|bofh\\)\\>" iso-8859-1))
1715  :variable-document
1716  "Alist of regexps (to match group names) and default charsets to be used when reading."
1717  :variable-group gnus-charset
1718  :variable-type '(repeat (list (regexp :tag "Group")
1719                                (symbol :tag "Charset")))
1720  :parameter-type '(symbol :tag "Charset")
1721  :parameter-document "\
1722 The default charset to use in the group.")
1723
1724 (gnus-define-group-parameter
1725  post-method
1726  :type list
1727  :function-document
1728  "Return a posting method for GROUP."
1729  :variable gnus-post-method-alist
1730  :variable-document
1731  "Alist of regexps (to match group names) and method to be used when
1732 posting an article."
1733  :variable-group gnus-group-foreign
1734  :parameter-type
1735  '(choice :tag "Posting Method"
1736           (const :tag "Use native server" native)
1737           (const :tag "Use current server" current)
1738           (list :convert-widget
1739                 (lambda (widget)
1740                   (list 'sexp :tag "Methods"
1741                         :value gnus-select-method))))
1742  :parameter-document
1743  "Posting method for this group.")
1744
1745 (gnus-define-group-parameter
1746  large-newsgroup-initial
1747  :type integer
1748  :function-document
1749  "Return GROUP's initial input of the number of articles."
1750  :variable-document
1751  "*Alist of group regexps and its initial input of the number of articles."
1752  :parameter-type '(choice :tag "Initial Input for Large Newsgroup"
1753                           (const :tag "All" nil)
1754                           (integer))
1755  :parameter-document "\
1756
1757 This number will be prompted as the initial value of the number of
1758 articles to list when the group is a large newsgroup (see
1759 `gnus-large-newsgroup').  If it is nil, the default value is the
1760 total number of articles in the group.")
1761
1762 ;; The Gnus registry's ignored groups
1763 (gnus-define-group-parameter
1764  registry-ignore
1765  :type list
1766  :function-document
1767  "Whether this group should be ignored by the registry."
1768  :variable gnus-registry-ignored-groups
1769  :variable-default nil
1770  :variable-document
1771  "*Groups in which the registry should be turned off."
1772  :variable-group gnus-registry
1773  :variable-type '(repeat
1774                   (list
1775                    (regexp :tag "Group Name Regular Expression")
1776                    (boolean :tag "Ignored")))
1777
1778  :parameter-type '(boolean :tag "Group Ignored by the Registry")
1779  :parameter-document
1780  "Whether the Gnus Registry should ignore this group.")
1781
1782 ;; group parameters for spam processing added by Ted Zlatanov <tzz@lifelogs.com>
1783 (defcustom gnus-install-group-spam-parameters t
1784   "*Disable the group parameters for spam detection.
1785 Enable if `G c' in XEmacs is giving you trouble, and make sure to submit a bug report."
1786   :type 'boolean
1787   :group 'gnus-start)
1788
1789 (when gnus-install-group-spam-parameters
1790   (defvar gnus-group-spam-classification-spam t
1791     "Spam group classification (requires spam.el).
1792 This group contains spam messages.  On summary entry, unread messages
1793 will be marked as spam.  On summary exit, the specified spam
1794 processors will be invoked on spam-marked messages, then those
1795 messages will be expired, so the spam processor will only see a
1796 spam-marked message once.")
1797
1798   (defvar gnus-group-spam-classification-ham 'ask
1799     "The ham value for the spam group parameter (requires spam.el).
1800 On summary exit, the specified ham processors will be invoked on
1801 ham-marked messages.  Exercise caution, since the ham processor will
1802 see the same message more than once because there is no ham message
1803 registry.")
1804
1805   (gnus-define-group-parameter
1806    spam-contents
1807    :type list
1808    :function-document
1809    "The spam type (spam, ham, or neither) of the group."
1810    :variable gnus-spam-newsgroup-contents
1811    :variable-default nil
1812    :variable-document
1813    "*Groups in which to automatically mark new articles as spam on
1814 summary entry.  If non-nil, this should be a list of group name
1815 regexps that should match all groups in which to do automatic spam
1816 tagging, associated with a classification (spam, ham, or neither).
1817 This only makes sense for mail groups."
1818    :variable-group spam
1819    :variable-type '(repeat
1820                     (list :tag "Group contents spam/ham classification"
1821                           (regexp :tag "Group")
1822                           (choice
1823                            (variable-item gnus-group-spam-classification-spam)
1824                            (variable-item gnus-group-spam-classification-ham)
1825                            (const :tag "Unclassified" nil))))
1826
1827    :parameter-type '(list :tag "Group contents spam/ham classification"
1828                           (choice :tag "Group contents classification for spam sorting"
1829                                   (variable-item gnus-group-spam-classification-spam)
1830                                   (variable-item gnus-group-spam-classification-ham)
1831                                   (const :tag "Unclassified" nil)))
1832    :parameter-document
1833    "The spam classification (spam, ham, or neither) of this group.
1834 When a spam group is entered, all unread articles are marked as spam.")
1835
1836   (defvar gnus-group-spam-exit-processor-ifile "ifile"
1837     "OBSOLETE: The ifile summary exit spam processor.")
1838
1839   (defvar gnus-group-spam-exit-processor-stat "stat"
1840     "OBSOLETE: The spam-stat summary exit spam processor.")
1841
1842   (defvar gnus-group-spam-exit-processor-bogofilter "bogofilter"
1843     "OBSOLETE: The Bogofilter summary exit spam processor.")
1844
1845   (defvar gnus-group-spam-exit-processor-blacklist "blacklist"
1846     "OBSOLETE: The Blacklist summary exit spam processor.")
1847
1848   (defvar gnus-group-spam-exit-processor-report-gmane "report-gmane"
1849     "OBSOLETE: The Gmane reporting summary exit spam processor.
1850 Only applicable to NNTP groups with articles from Gmane.  See spam-report.el")
1851
1852   (defvar gnus-group-spam-exit-processor-spamoracle "spamoracle-spam"
1853     "OBSOLETE: The spamoracle summary exit spam processor.")
1854
1855   (defvar gnus-group-ham-exit-processor-ifile "ifile-ham"
1856     "OBSOLETE: The ifile summary exit ham processor.
1857 Only applicable to non-spam (unclassified and ham) groups.")
1858
1859   (defvar gnus-group-ham-exit-processor-bogofilter "bogofilter-ham"
1860     "OBSOLETE: The Bogofilter summary exit ham processor.
1861 Only applicable to non-spam (unclassified and ham) groups.")
1862
1863   (defvar gnus-group-ham-exit-processor-stat "stat-ham"
1864     "OBSOLETE: The spam-stat summary exit ham processor.
1865 Only applicable to non-spam (unclassified and ham) groups.")
1866
1867   (defvar gnus-group-ham-exit-processor-whitelist "whitelist"
1868     "OBSOLETE: The whitelist summary exit ham processor.
1869 Only applicable to non-spam (unclassified and ham) groups.")
1870
1871   (defvar gnus-group-ham-exit-processor-BBDB "bbdb"
1872     "OBSOLETE: The BBDB summary exit ham processor.
1873 Only applicable to non-spam (unclassified and ham) groups.")
1874
1875   (defvar gnus-group-ham-exit-processor-copy "copy"
1876     "OBSOLETE: The ham copy exit ham processor.
1877 Only applicable to non-spam (unclassified and ham) groups.")
1878
1879   (defvar gnus-group-ham-exit-processor-spamoracle "spamoracle-ham"
1880     "OBSOLETE: The spamoracle summary exit ham processor.
1881 Only applicable to non-spam (unclassified and ham) groups.")
1882
1883   (gnus-define-group-parameter
1884    spam-process
1885    :type list
1886    :parameter-type
1887    '(choice
1888      :tag "Spam Summary Exit Processor"
1889      :value nil
1890      (list :tag "Spam Summary Exit Processor Choices"
1891            (set
1892             (variable-item gnus-group-spam-exit-processor-ifile)
1893             (variable-item gnus-group-spam-exit-processor-stat)
1894             (variable-item gnus-group-spam-exit-processor-bogofilter)
1895             (variable-item gnus-group-spam-exit-processor-blacklist)
1896             (variable-item gnus-group-spam-exit-processor-spamoracle)
1897             (variable-item gnus-group-spam-exit-processor-report-gmane)
1898             (variable-item gnus-group-ham-exit-processor-bogofilter)
1899             (variable-item gnus-group-ham-exit-processor-ifile)
1900             (variable-item gnus-group-ham-exit-processor-stat)
1901             (variable-item gnus-group-ham-exit-processor-whitelist)
1902             (variable-item gnus-group-ham-exit-processor-BBDB)
1903             (variable-item gnus-group-ham-exit-processor-spamoracle)
1904             (variable-item gnus-group-ham-exit-processor-copy)
1905             (const :tag "Spam: Gmane Report"  (spam spam-use-gmane))
1906             (const :tag "Spam: Bogofilter"    (spam spam-use-bogofilter))
1907             (const :tag "Spam: Blacklist"     (spam spam-use-blacklist))
1908             (const :tag "Spam: ifile"         (spam spam-use-ifile))
1909             (const :tag "Spam: Spam-stat"     (spam spam-use-stat))
1910             (const :tag "Spam: Spam Oracle"   (spam spam-use-spamoracle))
1911             (const :tag "Ham: ifile"          (ham spam-use-ifile))
1912             (const :tag "Ham: Bogofilter"     (ham spam-use-bogofilter))
1913             (const :tag "Ham: Spam-stat"      (ham spam-use-stat))
1914             (const :tag "Ham: Whitelist"      (ham spam-use-whitelist))
1915             (const :tag "Ham: BBDB"           (ham spam-use-BBDB))
1916             (const :tag "Ham: Copy"           (ham spam-use-ham-copy))
1917             (const :tag "Ham: Spam Oracle"    (ham spam-use-spamoracle)))))
1918    :function-document
1919    "Which spam or ham processors will be applied when the summary is exited."
1920    :variable gnus-spam-process-newsgroups
1921    :variable-default nil
1922    :variable-document
1923    "*Groups in which to automatically process spam or ham articles with
1924 a backend on summary exit.  If non-nil, this should be a list of group
1925 name regexps that should match all groups in which to do automatic
1926 spam processing, associated with the appropriate processor."
1927    :variable-group spam
1928    :variable-type
1929    '(repeat :tag "Spam/Ham Processors"
1930             (list :tag "Spam Summary Exit Processor Choices"
1931                   (regexp :tag "Group Regexp")
1932                   (set
1933                    :tag "Spam/Ham Summary Exit Processor"
1934                    (variable-item gnus-group-spam-exit-processor-ifile)
1935                    (variable-item gnus-group-spam-exit-processor-stat)
1936                    (variable-item gnus-group-spam-exit-processor-bogofilter)
1937                    (variable-item gnus-group-spam-exit-processor-blacklist)
1938                    (variable-item gnus-group-spam-exit-processor-spamoracle)
1939                    (variable-item gnus-group-spam-exit-processor-report-gmane)
1940                    (variable-item gnus-group-ham-exit-processor-bogofilter)
1941                    (variable-item gnus-group-ham-exit-processor-ifile)
1942                    (variable-item gnus-group-ham-exit-processor-stat)
1943                    (variable-item gnus-group-ham-exit-processor-whitelist)
1944                    (variable-item gnus-group-ham-exit-processor-BBDB)
1945                    (variable-item gnus-group-ham-exit-processor-spamoracle)
1946                    (variable-item gnus-group-ham-exit-processor-copy)
1947                    (const :tag "Spam: Gmane Report"  (spam spam-use-gmane))
1948                    (const :tag "Spam: Bogofilter"    (spam spam-use-bogofilter))
1949                    (const :tag "Spam: Blacklist"     (spam spam-use-blacklist))
1950                    (const :tag "Spam: ifile"         (spam spam-use-ifile))
1951                    (const :tag "Spam: Spam-stat"     (spam spam-use-stat))
1952                    (const :tag "Spam: Spam Oracle"   (spam spam-use-spamoracle))
1953                    (const :tag "Ham: ifile"          (ham spam-use-ifile))
1954                    (const :tag "Ham: Bogofilter"     (ham spam-use-bogofilter))
1955                    (const :tag "Ham: Spam-stat"      (ham spam-use-stat))
1956                    (const :tag "Ham: Whitelist"      (ham spam-use-whitelist))
1957                    (const :tag "Ham: BBDB"           (ham spam-use-BBDB))
1958                    (const :tag "Ham: Copy"           (ham spam-use-ham-copy))
1959                    (const :tag "Ham: Spam Oracle"    (ham spam-use-spamoracle)))))
1960
1961    :parameter-document
1962    "Which spam or ham processors will be applied when the summary is exited.")
1963
1964   (gnus-define-group-parameter
1965    spam-autodetect
1966    :type list
1967    :parameter-type
1968    '(boolean :tag "Spam autodetection")
1969    :function-document
1970    "Should spam be autodetected (with spam-split) in this group?"
1971    :variable gnus-spam-autodetect
1972    :variable-default nil
1973    :variable-document
1974    "*Groups in which spam should be autodetected when they are entered.
1975    Only unseen articles will be examined, unless
1976    spam-autodetect-recheck-messages is set."
1977    :variable-group spam
1978    :variable-type
1979    '(repeat
1980      :tag "Autodetection setting"
1981      (list
1982       (regexp :tag "Group Regexp")
1983       boolean))
1984    :parameter-document
1985    "Spam autodetection.
1986 Only unseen articles will be examined, unless
1987 spam-autodetect-recheck-messages is set.")
1988
1989   (gnus-define-group-parameter
1990    spam-autodetect-methods
1991    :type list
1992    :parameter-type
1993    '(choice :tag "Spam autodetection-specific methods"
1994      (const none)
1995      (const default)
1996      (set :tag "Use specific methods"
1997           (variable-item spam-use-blacklist)
1998           (variable-item spam-use-regex-headers)
1999           (variable-item spam-use-regex-body)
2000           (variable-item spam-use-whitelist)
2001           (variable-item spam-use-BBDB)
2002           (variable-item spam-use-ifile)
2003           (variable-item spam-use-spamoracle)
2004           (variable-item spam-use-stat)
2005           (variable-item spam-use-blackholes)
2006           (variable-item spam-use-hashcash)
2007           (variable-item spam-use-bogofilter-headers)
2008           (variable-item spam-use-bogofilter)))
2009    :function-document
2010    "Methods to be used for autodetection in each group"
2011    :variable gnus-spam-autodetect-methods
2012    :variable-default nil
2013    :variable-document
2014    "*Methods for autodetecting spam per group.
2015 Requires the spam-autodetect parameter.  Only unseen articles
2016 will be examined, unless spam-autodetect-recheck-messages is
2017 set."
2018    :variable-group spam
2019    :variable-type
2020    '(repeat
2021      :tag "Autodetection methods"
2022      (list
2023       (regexp :tag "Group Regexp")
2024       (choice
2025        (const none)
2026        (const default)
2027        (set :tag "Use specific methods"
2028         (variable-item spam-use-blacklist)
2029         (variable-item spam-use-regex-headers)
2030         (variable-item spam-use-regex-body)
2031         (variable-item spam-use-whitelist)
2032         (variable-item spam-use-BBDB)
2033         (variable-item spam-use-ifile)
2034         (variable-item spam-use-spamoracle)
2035         (variable-item spam-use-stat)
2036         (variable-item spam-use-blackholes)
2037         (variable-item spam-use-hashcash)
2038         (variable-item spam-use-bogofilter-headers)
2039         (variable-item spam-use-bogofilter)))))
2040      :parameter-document
2041    "Spam autodetection methods.
2042 Requires the spam-autodetect parameter.  Only unseen articles
2043 will be examined, unless spam-autodetect-recheck-messages is
2044 set.")
2045
2046   (gnus-define-group-parameter
2047    spam-process-destination
2048    :type list
2049    :parameter-type
2050    '(choice :tag "Destination for spam-processed articles at summary exit"
2051             (string :tag "Move to a group")
2052             (repeat :tag "Move to multiple groups"
2053                     (string :tag "Destination group"))
2054             (const :tag "Expire" nil))
2055    :function-document
2056    "Where spam-processed articles will go at summary exit."
2057    :variable gnus-spam-process-destinations
2058    :variable-default nil
2059    :variable-document
2060    "*Groups in which to explicitly send spam-processed articles to
2061 another group, or expire them (the default).  If non-nil, this should
2062 be a list of group name regexps that should match all groups in which
2063 to do spam-processed article moving, associated with the destination
2064 group or nil for explicit expiration.  This only makes sense for
2065 mail groups."
2066    :variable-group spam
2067    :variable-type
2068    '(repeat
2069      :tag "Spam-processed articles destination"
2070      (list
2071       (regexp :tag "Group Regexp")
2072       (choice
2073        :tag "Destination for spam-processed articles at summary exit"
2074        (string :tag "Move to a group")
2075        (repeat :tag "Move to multiple groups"
2076                (string :tag "Destination group"))
2077        (const :tag "Expire" nil))))
2078    :parameter-document
2079    "Where spam-processed articles will go at summary exit.")
2080
2081   (gnus-define-group-parameter
2082    ham-process-destination
2083    :type list
2084    :parameter-type
2085    '(choice
2086      :tag "Destination for ham articles at summary exit from a spam group"
2087      (string :tag "Move to a group")
2088      (repeat :tag "Move to multiple groups"
2089              (string :tag "Destination group"))
2090      (const :tag "Respool" respool)
2091      (const :tag "Do nothing" nil))
2092    :function-document
2093    "Where ham articles will go at summary exit from a spam group."
2094    :variable gnus-ham-process-destinations
2095    :variable-default nil
2096    :variable-document
2097    "*Groups in which to explicitly send ham articles to
2098 another group, or do nothing (the default).  If non-nil, this should
2099 be a list of group name regexps that should match all groups in which
2100 to do ham article moving, associated with the destination
2101 group or nil for explicit ignoring.  This only makes sense for
2102 mail groups, and only works in spam groups."
2103    :variable-group spam
2104    :variable-type
2105    '(repeat
2106      :tag "Ham articles destination"
2107      (list
2108       (regexp :tag "Group Regexp")
2109       (choice
2110        :tag "Destination for ham articles at summary exit from spam group"
2111        (string :tag "Move to a group")
2112        (repeat :tag "Move to multiple groups"
2113                 (string :tag "Destination group"))
2114        (const :tag "Respool" respool)
2115        (const :tag "Expire" nil))))
2116    :parameter-document
2117    "Where ham articles will go at summary exit from a spam group.")
2118
2119   (gnus-define-group-parameter
2120    ham-marks
2121    :type 'list
2122    :parameter-type '(list :tag "Ham mark choices"
2123                           (set
2124                            (variable-item gnus-del-mark)
2125                            (variable-item gnus-read-mark)
2126                            (variable-item gnus-ticked-mark)
2127                            (variable-item gnus-killed-mark)
2128                            (variable-item gnus-kill-file-mark)
2129                            (variable-item gnus-low-score-mark)))
2130
2131    :parameter-document
2132    "Marks considered ham (positively not spam).  Such articles will be
2133 processed as ham (non-spam) on group exit.  When nil, the global
2134 spam-ham-marks variable takes precedence."
2135    :variable-default '((".*" ((gnus-del-mark
2136                                gnus-read-mark
2137                                gnus-killed-mark
2138                                gnus-kill-file-mark
2139                                gnus-low-score-mark))))
2140    :variable-group spam
2141    :variable-document
2142    "*Groups in which to explicitly set the ham marks to some value.")
2143
2144   (gnus-define-group-parameter
2145    spam-marks
2146    :type 'list
2147    :parameter-type '(list :tag "Spam mark choices"
2148                           (set
2149                            (variable-item gnus-spam-mark)
2150                            (variable-item gnus-killed-mark)
2151                            (variable-item gnus-kill-file-mark)
2152                            (variable-item gnus-low-score-mark)))
2153
2154    :parameter-document
2155    "Marks considered spam.
2156 Such articles will be processed as spam on group exit.  When nil, the global
2157 spam-spam-marks variable takes precedence."
2158    :variable-default '((".*" ((gnus-spam-mark))))
2159    :variable-group spam
2160    :variable-document
2161    "*Groups in which to explicitly set the spam marks to some value."))
2162
2163 (defcustom gnus-group-uncollapsed-levels 1
2164   "Number of group name elements to leave alone when making a short group name."
2165   :group 'gnus-group-visual
2166   :type 'integer)
2167
2168 (defcustom gnus-group-use-permanent-levels nil
2169   "*If non-nil, once you set a level, Gnus will use this level."
2170   :group 'gnus-group-levels
2171   :type 'boolean)
2172
2173 ;; Hooks.
2174
2175 (defcustom gnus-load-hook nil
2176   "A hook run while Gnus is loaded."
2177   :group 'gnus-start
2178   :type 'hook)
2179
2180 (defcustom gnus-apply-kill-hook '(gnus-apply-kill-file)
2181   "A hook called to apply kill files to a group.
2182 This hook is intended to apply a kill file to the selected newsgroup.
2183 The function `gnus-apply-kill-file' is called by default.
2184
2185 Since a general kill file is too heavy to use only for a few
2186 newsgroups, I recommend you to use a lighter hook function.  For
2187 example, if you'd like to apply a kill file to articles which contains
2188 a string `rmgroup' in subject in newsgroup `control', you can use the
2189 following hook:
2190
2191  (setq gnus-apply-kill-hook
2192       (list
2193         (lambda ()
2194           (cond ((string-match \"control\" gnus-newsgroup-name)
2195                  (gnus-kill \"Subject\" \"rmgroup\")
2196                  (gnus-expunge \"X\"))))))"
2197   :group 'gnus-score-kill
2198   :options '(gnus-apply-kill-file)
2199   :type 'hook)
2200
2201 (defcustom gnus-group-change-level-function nil
2202   "Function run when a group level is changed.
2203 It is called with three parameters -- GROUP, LEVEL and OLDLEVEL."
2204   :group 'gnus-group-levels
2205   :type 'function)
2206
2207 ;;; Face thingies.
2208
2209 (defcustom gnus-visual
2210   '(summary-highlight group-highlight article-highlight
2211                       mouse-face
2212                       summary-menu group-menu article-menu
2213                       tree-highlight menu highlight
2214                       browse-menu server-menu
2215                       page-marker tree-menu binary-menu pick-menu
2216                       grouplens-menu)
2217   "*Enable visual features.
2218 If `visual' is disabled, there will be no menus and few faces.  Most of
2219 the visual customization options below will be ignored.  Gnus will use
2220 less space and be faster as a result.
2221
2222 This variable can also be a list of visual elements to switch on.  For
2223 instance, to switch off all visual things except menus, you can say:
2224
2225    (setq gnus-visual '(menu))
2226
2227 Valid elements include `summary-highlight', `group-highlight',
2228 `article-highlight', `mouse-face', `summary-menu', `group-menu',
2229 `article-menu', `tree-highlight', `menu', `highlight', `browse-menu',
2230 `server-menu', `page-marker', `tree-menu', `binary-menu', `pick-menu',
2231 and `grouplens-menu'."
2232   :group 'gnus-meta
2233   :group 'gnus-visual
2234   :type '(set (const summary-highlight)
2235               (const group-highlight)
2236               (const article-highlight)
2237               (const mouse-face)
2238               (const summary-menu)
2239               (const group-menu)
2240               (const article-menu)
2241               (const tree-highlight)
2242               (const menu)
2243               (const highlight)
2244               (const browse-menu)
2245               (const server-menu)
2246               (const page-marker)
2247               (const tree-menu)
2248               (const binary-menu)
2249               (const pick-menu)
2250               (const grouplens-menu)))
2251
2252 ;; Byte-compiler warning.
2253 (defvar gnus-visual)
2254 ;; Find out whether the gnus-visual TYPE is wanted.
2255 (defun gnus-visual-p (&optional type class)
2256   (and gnus-visual                      ; Has to be non-nil, at least.
2257        (if (not type)                   ; We don't care about type.
2258            gnus-visual
2259          (if (listp gnus-visual)        ; It's a list, so we check it.
2260              (or (memq type gnus-visual)
2261                  (memq class gnus-visual))
2262            t))))
2263
2264 (defcustom gnus-mouse-face
2265   (condition-case ()
2266       (if (gnus-visual-p 'mouse-face 'highlight)
2267           (if (boundp 'gnus-mouse-face)
2268               (or gnus-mouse-face 'highlight)
2269             'highlight)
2270         'default)
2271     (error 'highlight))
2272   "*Face used for group or summary buffer mouse highlighting.
2273 The line beneath the mouse pointer will be highlighted with this
2274 face."
2275   :group 'gnus-visual
2276   :type 'face)
2277
2278 (defcustom gnus-article-save-directory gnus-directory
2279   "*Name of the directory articles will be saved in (default \"~/News\")."
2280   :group 'gnus-article-saving
2281   :type 'directory)
2282
2283 (defvar gnus-plugged t
2284   "Whether Gnus is plugged or not.")
2285
2286 (defcustom gnus-agent-cache t
2287   "Controls use of the agent cache while plugged.
2288 When set, Gnus will prefer using the locally stored content rather
2289 than re-fetching it from the server.  You also need to enable
2290 `gnus-agent' for this to have any affect."
2291   :version "21.3"
2292   :group 'gnus-agent
2293   :type 'boolean)
2294
2295 (defcustom gnus-default-charset 'undecided
2296   "Default charset assumed to be used when viewing non-ASCII characters.
2297 This variable is overridden on a group-to-group basis by the
2298 `gnus-group-charset-alist' variable and is only used on groups not
2299 covered by that variable."
2300   :type 'symbol
2301   :group 'gnus-charset)
2302
2303 ;; Fixme: Doc reference to agent.
2304 (defcustom gnus-agent t
2305   "Whether we want to use the Gnus agent or not.
2306
2307 You may customize gnus-agent to disable its use.  However, some
2308 back ends have started to use the agent as a client-side cache.
2309 Disabling the agent may result in noticeable loss of performance."
2310   :version "21.3"
2311   :group 'gnus-agent
2312   :type 'boolean)
2313
2314 (defcustom gnus-other-frame-function 'gnus
2315   "Function called by the command `gnus-other-frame'."
2316   :group 'gnus-start
2317   :type '(choice (function-item gnus)
2318                  (function-item gnus-no-server)
2319                  (function-item gnus-slave)
2320                  (function-item gnus-slave-no-server)))
2321
2322 (defcustom gnus-other-frame-parameters nil
2323   "Frame parameters used by `gnus-other-frame' to create a Gnus frame.
2324 This should be an alist for Emacs, or a plist for XEmacs."
2325   :group 'gnus-start
2326   :type (if (featurep 'xemacs)
2327             '(repeat (list :inline t :format "%v"
2328                            (symbol :tag "Property")
2329                            (sexp :tag "Value")))
2330           '(repeat (cons :format "%v"
2331                          (symbol :tag "Parameter")
2332                          (sexp :tag "Value")))))
2333
2334 (defcustom gnus-user-agent 'emacs-gnus-type
2335   "Which information should be exposed in the User-Agent header.
2336
2337 It can be one of the symbols `gnus' \(show only Gnus version\), `emacs-gnus'
2338 \(show only Emacs and Gnus versions\), `emacs-gnus-config' \(same as
2339 `emacs-gnus' plus system configuration\), `emacs-gnus-type' \(same as
2340 `emacs-gnus' plus system type\) or a custom string.  If you set it to a
2341 string, be sure to use a valid format, see RFC 2616."
2342   :group 'gnus-message
2343   :type '(choice
2344           (item :tag "Show Gnus and Emacs versions and system type"
2345                 emacs-gnus-type)
2346           (item :tag "Show Gnus and Emacs versions and system configuration"
2347                 emacs-gnus-config)
2348           (item :tag "Show Gnus and Emacs versions" emacs-gnus)
2349           (item :tag "Show only Gnus version" gnus)
2350           (string :tag "Other")))
2351
2352 \f
2353 ;;; Internal variables
2354
2355 (defvar gnus-agent-gcc-header "X-Gnus-Agent-Gcc")
2356 (defvar gnus-agent-meta-information-header "X-Gnus-Agent-Meta-Information")
2357 (defvar gnus-agent-method-p-cache nil
2358   ; Reset each time gnus-agent-covered-methods is changed else
2359   ; gnus-agent-method-p may mis-report a methods status.
2360   )
2361 (defvar gnus-agent-target-move-group-header "X-Gnus-Agent-Move-To")
2362 (defvar gnus-draft-meta-information-header "X-Draft-From")
2363 (defvar gnus-group-get-parameter-function 'gnus-group-get-parameter)
2364 (defvar gnus-original-article-buffer " *Original Article*")
2365 (defvar gnus-newsgroup-name nil)
2366 (defvar gnus-ephemeral-servers nil)
2367 (defvar gnus-server-method-cache nil)
2368
2369 (defvar gnus-agent-fetching nil
2370   "Whether Gnus agent is in fetching mode.")
2371
2372 (defvar gnus-agent-covered-methods nil
2373   "A list of servers, NOT methods, showing which servers are covered by the agent.")
2374
2375 (defvar gnus-command-method nil
2376   "Dynamically bound variable that says what the current back end is.")
2377
2378 (defvar gnus-current-select-method nil
2379   "The current method for selecting a newsgroup.")
2380
2381 (defvar gnus-tree-buffer "*Tree*"
2382   "Buffer where Gnus thread trees are displayed.")
2383
2384 ;; Dummy variable.
2385 (defvar gnus-use-generic-from nil)
2386
2387 ;; Variable holding the user answers to all method prompts.
2388 (defvar gnus-method-history nil)
2389
2390 ;; Variable holding the user answers to all mail method prompts.
2391 (defvar gnus-mail-method-history nil)
2392
2393 ;; Variable holding the user answers to all group prompts.
2394 (defvar gnus-group-history nil)
2395
2396 (defvar gnus-server-alist nil
2397   "List of available servers.")
2398
2399 (defcustom gnus-cache-directory
2400   (nnheader-concat gnus-directory "cache/")
2401   "*The directory where cached articles will be stored."
2402   :group 'gnus-cache
2403   :type 'directory)
2404
2405 (defvar gnus-predefined-server-alist
2406   `(("cache"
2407      nnspool "cache"
2408      (nnspool-spool-directory ,gnus-cache-directory)
2409      (nnspool-nov-directory ,gnus-cache-directory)
2410      (nnspool-active-file
2411       ,(nnheader-concat gnus-cache-directory "active"))))
2412   "List of predefined (convenience) servers.")
2413
2414 (defvar gnus-topic-indentation "") ;; Obsolete variable.
2415
2416 (defconst gnus-article-mark-lists
2417   '((marked . tick) (replied . reply)
2418     (expirable . expire) (killed . killed)
2419     (bookmarks . bookmark) (dormant . dormant)
2420     (scored . score) (saved . save)
2421     (cached . cache) (downloadable . download)
2422     (unsendable . unsend) (forwarded . forward)
2423     (recent . recent) (seen . seen)))
2424
2425 (defconst gnus-article-special-mark-lists
2426   '((seen range)
2427     (killed range)
2428     (bookmark tuple)
2429     (score tuple)))
2430
2431 ;; Propagate flags to server, with the following exceptions:
2432 ;; `seen' is private to each gnus installation
2433 ;; `cache' is a internal gnus flag for each gnus installation
2434 ;; `download' is a agent flag private to each gnus installation
2435 ;; `unsend' are for nndraft groups only
2436 ;; `score' is not a proper mark
2437 ;; `bookmark': don't propagated it, or fix the bug in update-mark.
2438 (defconst gnus-article-unpropagated-mark-lists
2439   '(seen cache download unsend score bookmark)
2440   "Marks that shouldn't be propagated to back ends.
2441 Typical marks are those that make no sense in a standalone back end,
2442 such as a mark that says whether an article is stored in the cache
2443 \(which doesn't make sense in a standalone back end).")
2444
2445 (defvar gnus-headers-retrieved-by nil)
2446 (defvar gnus-article-reply nil)
2447 (defvar gnus-override-method nil)
2448 (defvar gnus-article-check-size nil)
2449 (defvar gnus-opened-servers nil)
2450
2451 (defvar gnus-current-kill-article nil)
2452
2453 (defvar gnus-have-read-active-file nil)
2454
2455 (defconst gnus-maintainer
2456   "bugs@gnus.org (The Gnus Bugfixing Girls + Boys)"
2457   "The mail address of the Gnus maintainers.")
2458
2459 (defvar gnus-info-nodes
2460   '((gnus-group-mode "(gnus)Group Buffer")
2461     (gnus-summary-mode "(gnus)Summary Buffer")
2462     (gnus-article-mode "(gnus)Article Buffer")
2463     (gnus-server-mode "(gnus)Server Buffer")
2464     (gnus-browse-mode "(gnus)Browse Foreign Server")
2465     (gnus-tree-mode "(gnus)Tree Display"))
2466   "Alist of major modes and related Info nodes.")
2467
2468 (defvar gnus-group-buffer "*Group*")
2469 (defvar gnus-summary-buffer "*Summary*")
2470 (defvar gnus-article-buffer "*Article*")
2471 (defvar gnus-server-buffer "*Server*")
2472
2473 (defvar gnus-slave nil
2474   "Whether this Gnus is a slave or not.")
2475
2476 (defvar gnus-batch-mode nil
2477   "Whether this Gnus is running in batch mode or not.")
2478
2479 (defvar gnus-variable-list
2480   '(gnus-newsrc-options gnus-newsrc-options-n
2481                         gnus-newsrc-last-checked-date
2482                         gnus-newsrc-alist gnus-server-alist
2483                         gnus-killed-list gnus-zombie-list
2484                         gnus-topic-topology gnus-topic-alist
2485                         gnus-format-specs)
2486   "Gnus variables saved in the quick startup file.")
2487
2488 (defvar gnus-newsrc-alist nil
2489   "Assoc list of read articles.
2490 `gnus-newsrc-hashtb' should be kept so that both hold the same information.")
2491
2492 (defvar gnus-registry-alist nil
2493   "Assoc list of registry data.
2494 gnus-registry.el will populate this if it's loaded.")
2495
2496 (defvar gnus-newsrc-hashtb nil
2497   "Hashtable of `gnus-newsrc-alist'.")
2498
2499 (defvar gnus-killed-list nil
2500   "List of killed newsgroups.")
2501
2502 (defvar gnus-killed-hashtb nil
2503   "Hash table equivalent of `gnus-killed-list'.")
2504
2505 (defvar gnus-zombie-list nil
2506   "List of almost dead newsgroups.")
2507
2508 (defvar gnus-description-hashtb nil
2509   "Descriptions of newsgroups.")
2510
2511 (defvar gnus-list-of-killed-groups nil
2512   "List of newsgroups that have recently been killed by the user.")
2513
2514 (defvar gnus-active-hashtb nil
2515   "Hashtable of active articles.")
2516
2517 (defvar gnus-moderated-hashtb nil
2518   "Hashtable of moderated newsgroups.")
2519
2520 ;; Save window configuration.
2521 (defvar gnus-prev-winconf nil)
2522
2523 (defvar gnus-reffed-article-number nil)
2524
2525 ;;; Let the byte-compiler know that we know about this variable.
2526 (defvar rmail-default-rmail-file)
2527
2528 (defvar gnus-dead-summary nil)
2529
2530 (defvar gnus-invalid-group-regexp "[: `'\"/]\\|^$"
2531   "Regexp matching invalid groups.")
2532
2533 (defvar gnus-other-frame-object nil
2534   "A frame object which will be created by `gnus-other-frame'.")
2535
2536 ;;; End of variables.
2537
2538 ;; Define some autoload functions Gnus might use.
2539 (eval-and-compile
2540
2541   ;; This little mapcar goes through the list below and marks the
2542   ;; symbols in question as autoloaded functions.
2543   (mapcar
2544    (lambda (package)
2545      (let ((interactive (nth 1 (memq ':interactive package))))
2546        (mapcar
2547         (lambda (function)
2548           (let (keymap)
2549             (when (consp function)
2550               (setq keymap (car (memq 'keymap function)))
2551               (setq function (car function)))
2552             (unless (fboundp function)
2553               (autoload function (car package) nil interactive keymap))))
2554         (if (eq (nth 1 package) ':interactive)
2555             (nthcdr 3 package)
2556           (cdr package)))))
2557    '(("info" :interactive t Info-goto-node)
2558      ("pp" pp-to-string)
2559      ("qp" quoted-printable-decode-region quoted-printable-decode-string)
2560      ("ps-print" ps-print-preprint)
2561      ("message" :interactive t
2562       message-send-and-exit message-yank-original)
2563      ("babel" babel-as-string)
2564      ("nnmail" nnmail-split-fancy nnmail-article-group)
2565      ("nnvirtual" nnvirtual-catchup-group nnvirtual-convert-headers)
2566      ("rmailout" rmail-output rmail-output-to-rmail-file)
2567      ("rmail" rmail-insert-rmail-file-header rmail-count-new-messages
2568       rmail-show-message rmail-summary-exists
2569       rmail-select-summary rmail-update-summary)
2570      ("gnus-audio" :interactive t gnus-audio-play)
2571      ("gnus-xmas" gnus-xmas-splash)
2572      ("gnus-soup" :interactive t
2573       gnus-group-brew-soup gnus-brew-soup gnus-soup-add-article
2574       gnus-soup-send-replies gnus-soup-save-areas gnus-soup-pack-packet)
2575      ("nnsoup" nnsoup-pack-replies)
2576      ("score-mode" :interactive t gnus-score-mode)
2577      ("gnus-mh" gnus-summary-save-article-folder
2578       gnus-Folder-save-name gnus-folder-save-name)
2579      ("gnus-mh" :interactive t gnus-summary-save-in-folder)
2580      ("gnus-demon" gnus-demon-add-nocem gnus-demon-add-scanmail
2581       gnus-demon-add-rescan gnus-demon-add-scan-timestamps
2582       gnus-demon-add-disconnection gnus-demon-add-handler
2583       gnus-demon-remove-handler)
2584      ("gnus-demon" :interactive t
2585       gnus-demon-init gnus-demon-cancel)
2586      ("gnus-fun" gnus-convert-gray-x-face-to-xpm gnus-display-x-face-in-from
2587       gnus-convert-image-to-gray-x-face gnus-convert-face-to-png
2588       gnus-face-from-file)
2589      ("gnus-salt" gnus-highlight-selected-tree gnus-possibly-generate-tree
2590       gnus-tree-open gnus-tree-close gnus-carpal-setup-buffer)
2591      ("gnus-nocem" gnus-nocem-scan-groups gnus-nocem-close
2592       gnus-nocem-unwanted-article-p)
2593      ("gnus-srvr" gnus-enter-server-buffer gnus-server-set-info
2594       gnus-server-server-name)
2595      ("gnus-srvr" gnus-browse-foreign-server)
2596      ("gnus-cite" :interactive t
2597       gnus-article-highlight-citation gnus-article-hide-citation-maybe
2598       gnus-article-hide-citation gnus-article-fill-cited-article
2599       gnus-article-hide-citation-in-followups)
2600      ("gnus-kill" gnus-kill gnus-apply-kill-file-internal
2601       gnus-kill-file-edit-file gnus-kill-file-raise-followups-to-author
2602       gnus-execute gnus-expunge gnus-batch-kill gnus-batch-score)
2603      ("gnus-cache" gnus-cache-possibly-enter-article gnus-cache-save-buffers
2604       gnus-cache-possibly-remove-articles gnus-cache-request-article
2605       gnus-cache-retrieve-headers gnus-cache-possibly-alter-active
2606       gnus-cache-enter-remove-article gnus-cached-article-p
2607       gnus-cache-open gnus-cache-close gnus-cache-update-article
2608       gnus-cache-articles-in-group)
2609      ("gnus-cache" :interactive t gnus-jog-cache gnus-cache-enter-article
2610       gnus-cache-remove-article gnus-summary-insert-cached-articles)
2611      ("gnus-score" :interactive t
2612       gnus-summary-increase-score gnus-summary-set-score
2613       gnus-summary-raise-thread gnus-summary-raise-same-subject
2614       gnus-summary-raise-score gnus-summary-raise-same-subject-and-select
2615       gnus-summary-lower-thread gnus-summary-lower-same-subject
2616       gnus-summary-lower-score gnus-summary-lower-same-subject-and-select
2617       gnus-summary-current-score gnus-score-delta-default
2618       gnus-score-flush-cache gnus-score-close
2619       gnus-possibly-score-headers gnus-score-followup-article
2620       gnus-score-followup-thread)
2621      ("gnus-score"
2622       (gnus-summary-score-map keymap) gnus-score-save gnus-score-headers
2623       gnus-current-score-file-nondirectory gnus-score-adaptive
2624       gnus-score-find-trace gnus-score-file-name)
2625      ("gnus-cus" :interactive t gnus-group-customize gnus-score-customize)
2626      ("gnus-topic" :interactive t gnus-topic-mode)
2627      ("gnus-topic" gnus-topic-remove-group gnus-topic-set-parameters
2628       gnus-subscribe-topics)
2629      ("gnus-salt" :interactive t gnus-pick-mode gnus-binary-mode)
2630      ("gnus-uu" (gnus-uu-extract-map keymap) (gnus-uu-mark-map keymap))
2631      ("gnus-uu" :interactive t
2632       gnus-uu-digest-mail-forward gnus-uu-digest-post-forward
2633       gnus-uu-mark-series gnus-uu-mark-region gnus-uu-mark-buffer
2634       gnus-uu-mark-by-regexp gnus-uu-mark-all
2635       gnus-uu-mark-sparse gnus-uu-mark-thread gnus-uu-decode-uu
2636       gnus-uu-decode-uu-and-save gnus-uu-decode-unshar
2637       gnus-uu-decode-unshar-and-save gnus-uu-decode-save
2638       gnus-uu-decode-binhex gnus-uu-decode-uu-view
2639       gnus-uu-decode-uu-and-save-view gnus-uu-decode-unshar-view
2640       gnus-uu-decode-unshar-and-save-view gnus-uu-decode-save-view
2641       gnus-uu-decode-binhex-view gnus-uu-unmark-thread
2642       gnus-uu-mark-over gnus-uu-post-news)
2643      ("gnus-uu" gnus-uu-delete-work-dir gnus-uu-unmark-thread)
2644      ("gnus-msg" (gnus-summary-send-map keymap)
2645       gnus-article-mail gnus-copy-article-buffer gnus-extended-version)
2646      ("gnus-msg" :interactive t
2647       gnus-group-post-news gnus-group-mail gnus-group-news
2648       gnus-summary-post-news gnus-summary-news-other-window
2649       gnus-summary-followup gnus-summary-followup-with-original
2650       gnus-summary-cancel-article gnus-summary-supersede-article
2651       gnus-post-news gnus-summary-reply gnus-summary-reply-with-original
2652       gnus-summary-mail-forward gnus-summary-mail-other-window
2653       gnus-summary-resend-message gnus-summary-resend-bounced-mail
2654       gnus-summary-wide-reply gnus-summary-followup-to-mail
2655       gnus-summary-followup-to-mail-with-original gnus-bug
2656       gnus-summary-wide-reply-with-original
2657       gnus-summary-post-forward gnus-summary-wide-reply-with-original
2658       gnus-summary-post-forward)
2659      ("gnus-picon" :interactive t gnus-treat-from-picon)
2660      ("gnus-gl" bbb-login bbb-logout bbb-grouplens-group-p
2661       gnus-grouplens-mode)
2662      ("smiley" :interactive t smiley-region)
2663      ("gnus-win" gnus-configure-windows gnus-add-configuration)
2664      ("gnus-sum" gnus-summary-insert-line gnus-summary-read-group
2665       gnus-list-of-unread-articles gnus-list-of-read-articles
2666       gnus-offer-save-summaries gnus-make-thread-indent-array
2667       gnus-summary-exit gnus-update-read-articles gnus-summary-last-subject
2668       gnus-summary-skip-intangible gnus-summary-article-number
2669       gnus-data-header gnus-data-find)
2670      ("gnus-group" gnus-group-insert-group-line gnus-group-quit
2671       gnus-group-list-groups gnus-group-first-unread-group
2672       gnus-group-set-mode-line gnus-group-set-info gnus-group-save-newsrc
2673       gnus-group-setup-buffer gnus-group-get-new-news
2674       gnus-group-make-help-group gnus-group-update-group
2675       gnus-group-iterate gnus-group-group-name)
2676      ("gnus-bcklg" gnus-backlog-request-article gnus-backlog-enter-article
2677       gnus-backlog-remove-article)
2678      ("gnus-art" gnus-article-read-summary-keys gnus-article-save
2679       gnus-article-prepare gnus-article-set-window-start
2680       gnus-article-next-page gnus-article-prev-page
2681       gnus-request-article-this-buffer gnus-article-mode
2682       gnus-article-setup-buffer gnus-narrow-to-page
2683       gnus-article-delete-invisible-text gnus-treat-article)
2684      ("gnus-art" :interactive t
2685       gnus-article-hide-headers gnus-article-hide-boring-headers
2686       gnus-article-treat-overstrike
2687       gnus-article-remove-cr gnus-article-remove-trailing-blank-lines
2688       gnus-article-display-x-face gnus-article-de-quoted-unreadable
2689       gnus-article-de-base64-unreadable
2690       gnus-article-decode-HZ
2691       gnus-article-wash-html
2692       gnus-article-unsplit-urls
2693       gnus-article-hide-pem gnus-article-hide-signature
2694       gnus-article-strip-leading-blank-lines gnus-article-date-local
2695       gnus-article-date-original gnus-article-date-lapsed
2696 ;;      gnus-article-show-all-headers
2697       gnus-article-edit-mode gnus-article-edit-article
2698       gnus-article-edit-done gnus-article-decode-encoded-words
2699       gnus-start-date-timer gnus-stop-date-timer
2700       gnus-mime-view-all-parts)
2701      ("gnus-int" gnus-request-type)
2702      ("gnus-start" gnus-newsrc-parse-options gnus-1 gnus-no-server-1
2703       gnus-dribble-enter gnus-read-init-file gnus-dribble-touch)
2704      ("gnus-dup" gnus-dup-suppress-articles gnus-dup-unsuppress-article
2705       gnus-dup-enter-articles)
2706      ("gnus-range" gnus-copy-sequence)
2707      ("gnus-eform" gnus-edit-form)
2708      ("gnus-move" :interactive t
2709       gnus-group-move-group-to-server gnus-change-server)
2710      ("gnus-logic" gnus-score-advanced)
2711      ("gnus-undo" gnus-undo-mode gnus-undo-register)
2712      ("gnus-async" gnus-async-request-fetched-article gnus-async-prefetch-next
2713       gnus-async-prefetch-article gnus-async-prefetch-remove-group
2714       gnus-async-halt-prefetch)
2715      ("gnus-agent" gnus-open-agent gnus-agent-get-function
2716       gnus-agent-save-groups gnus-agent-save-active gnus-agent-method-p
2717       gnus-agent-get-undownloaded-list gnus-agent-fetch-session
2718       gnus-summary-set-agent-mark gnus-agent-save-group-info
2719       gnus-agent-request-article gnus-agent-retrieve-headers)
2720      ("gnus-agent" :interactive t
2721       gnus-unplugged gnus-agentize gnus-agent-batch)
2722      ("gnus-vm" :interactive t gnus-summary-save-in-vm
2723       gnus-summary-save-article-vm)
2724      ("compface" uncompface)
2725      ("gnus-draft" :interactive t gnus-draft-mode gnus-group-send-queue)
2726      ("gnus-mlspl" gnus-group-split gnus-group-split-fancy)
2727      ("gnus-mlspl" :interactive t gnus-group-split-setup
2728       gnus-group-split-update)
2729      ("gnus-delay" gnus-delay-initialize))))
2730
2731 ;;; gnus-sum.el thingies
2732
2733
2734 (defcustom gnus-summary-line-format "%U%R%z%I%(%[%4L: %-23,23f%]%) %s\n"
2735   "*The format specification of the lines in the summary buffer.
2736
2737 It works along the same lines as a normal formatting string,
2738 with some simple extensions.
2739
2740 %N   Article number, left padded with spaces (string)
2741 %S   Subject (string)
2742 %s   Subject if it is at the root of a thread, and \"\" otherwise (string)
2743 %n   Name of the poster (string)
2744 %a   Extracted name of the poster (string)
2745 %A   Extracted address of the poster (string)
2746 %F   Contents of the From: header (string)
2747 %f   Contents of the From: or To: headers (string)
2748 %x   Contents of the Xref: header (string)
2749 %D   Date of the article (string)
2750 %d   Date of the article (string) in DD-MMM format
2751 %o   Date of the article (string) in YYYYMMDD`T'HHMMSS format
2752 %M   Message-id of the article (string)
2753 %r   References of the article (string)
2754 %c   Number of characters in the article (integer)
2755 %k   Pretty-printed version of the above (string)
2756      For example, \"1.2k\" or \"0.4M\".
2757 %L   Number of lines in the article (integer)
2758 %I   Indentation based on thread level (a string of spaces)
2759 %B   A complex trn-style thread tree (string)
2760      The variables `gnus-sum-thread-*' can be used for customization.
2761 %T   A string with two possible values: 80 spaces if the article
2762      is on thread level two or larger and 0 spaces on level one
2763 %R   \"A\" if this article has been replied to, \" \" otherwise (character)
2764 %U   Status of this article (character, \"R\", \"K\", \"-\" or \" \")
2765 %[   Opening bracket (character, \"[\" or \"<\")
2766 %]   Closing bracket (character, \"]\" or \">\")
2767 %>   Spaces of length thread-level (string)
2768 %<   Spaces of length (- 20 thread-level) (string)
2769 %i   Article score (number)
2770 %z   Article zcore (character)
2771 %t   Number of articles under the current thread (number).
2772 %e   Whether the thread is empty or not (character).
2773 %l   GroupLens score (string).
2774 %V   Total thread score (number).
2775 %P   The line number (number).
2776 %O   Download mark (character).
2777 %*   If present, indicates desired cursor position
2778      (instead of after first colon).
2779 %u   User defined specifier.  The next character in the format string should
2780      be a letter.  Gnus will call the function gnus-user-format-function-X,
2781      where X is the letter following %u.  The function will be passed the
2782      current header as argument.  The function should return a string, which
2783      will be inserted into the summary just like information from any other
2784      summary specifier.
2785
2786 The %U (status), %R (replied) and %z (zcore) specs have to be handled
2787 with care.  For reasons of efficiency, Gnus will compute what column
2788 these characters will end up in, and \"hard-code\" that.  This means that
2789 it is invalid to have these specs after a variable-length spec.  Well,
2790 you might not be arrested, but your summary buffer will look strange,
2791 which is bad enough.
2792
2793 The smart choice is to have these specs as far to the left as
2794 possible.
2795
2796 This restriction may disappear in later versions of Gnus.
2797
2798 General format specifiers can also be used.
2799 See Info node `(gnus)Formatting Variables'."
2800   :link '(custom-manual "(gnus)Formatting Variables")
2801   :type 'string
2802   :group 'gnus-summary-format)
2803
2804 ;;;
2805 ;;; Skeleton keymaps
2806 ;;;
2807
2808 (defun gnus-suppress-keymap (keymap)
2809   (suppress-keymap keymap)
2810   (let ((keys `([backspace] [delete] "\177" "\M-u"))) ;gnus-mouse-2
2811     (while keys
2812       (define-key keymap (pop keys) 'undefined))))
2813
2814 (defvar gnus-article-mode-map
2815   (let ((keymap (make-sparse-keymap)))
2816     (gnus-suppress-keymap keymap)
2817     keymap))
2818 (defvar gnus-summary-mode-map
2819   (let ((keymap (make-keymap)))
2820     (gnus-suppress-keymap keymap)
2821     keymap))
2822 (defvar gnus-group-mode-map
2823   (let ((keymap (make-keymap)))
2824     (gnus-suppress-keymap keymap)
2825     keymap))
2826
2827 \f
2828
2829 ;; Fix by Hallvard B Furuseth <h.b.furuseth@usit.uio.no>.
2830 ;; If you want the cursor to go somewhere else, set these two
2831 ;; functions in some startup hook to whatever you want.
2832 (defalias 'gnus-summary-position-point 'gnus-goto-colon)
2833 (defalias 'gnus-group-position-point 'gnus-goto-colon)
2834
2835 ;;; Various macros and substs.
2836
2837 (defun gnus-header-from (header)
2838   (mail-header-from header))
2839
2840 (defmacro gnus-gethash (string hashtable)
2841   "Get hash value of STRING in HASHTABLE."
2842   `(symbol-value (intern-soft ,string ,hashtable)))
2843
2844 (defmacro gnus-gethash-safe (string hashtable)
2845   "Get hash value of STRING in HASHTABLE.
2846 Return nil if not defined."
2847   `(let ((sym (intern-soft ,string ,hashtable)))
2848      (and (boundp sym) (symbol-value sym))))
2849
2850 (defmacro gnus-sethash (string value hashtable)
2851   "Set hash value.  Arguments are STRING, VALUE, and HASHTABLE."
2852   `(set (intern ,string ,hashtable) ,value))
2853 (put 'gnus-sethash 'edebug-form-spec '(form form form))
2854
2855 (defmacro gnus-group-unread (group)
2856   "Get the currently computed number of unread articles in GROUP."
2857   `(car (gnus-gethash ,group gnus-newsrc-hashtb)))
2858
2859 (defmacro gnus-group-entry (group)
2860   "Get the newsrc entry for GROUP."
2861   `(gnus-gethash ,group gnus-newsrc-hashtb))
2862
2863 (defmacro gnus-active (group)
2864   "Get active info on GROUP."
2865   `(gnus-gethash ,group gnus-active-hashtb))
2866
2867 (defmacro gnus-set-active (group active)
2868   "Set GROUP's active info."
2869   `(gnus-sethash ,group ,active gnus-active-hashtb))
2870
2871 ;; Info access macros.
2872
2873 (defmacro gnus-info-group (info)
2874   `(nth 0 ,info))
2875 (defmacro gnus-info-rank (info)
2876   `(nth 1 ,info))
2877 (defmacro gnus-info-read (info)
2878   `(nth 2 ,info))
2879 (defmacro gnus-info-marks (info)
2880   `(nth 3 ,info))
2881 (defmacro gnus-info-method (info)
2882   `(nth 4 ,info))
2883 (defmacro gnus-info-params (info)
2884   `(nth 5 ,info))
2885
2886 (defmacro gnus-info-level (info)
2887   `(let ((rank (gnus-info-rank ,info)))
2888      (if (consp rank)
2889          (car rank)
2890        rank)))
2891 (defmacro gnus-info-score (info)
2892   `(let ((rank (gnus-info-rank ,info)))
2893      (or (and (consp rank) (cdr rank)) 0)))
2894
2895 (defmacro gnus-info-set-group (info group)
2896   `(setcar ,info ,group))
2897 (defmacro gnus-info-set-rank (info rank)
2898   `(setcar (nthcdr 1 ,info) ,rank))
2899 (defmacro gnus-info-set-read (info read)
2900   `(setcar (nthcdr 2 ,info) ,read))
2901 (defmacro gnus-info-set-marks (info marks &optional extend)
2902   (if extend
2903       `(gnus-info-set-entry ,info ,marks 3)
2904     `(setcar (nthcdr 3 ,info) ,marks)))
2905 (defmacro gnus-info-set-method (info method &optional extend)
2906   (if extend
2907       `(gnus-info-set-entry ,info ,method 4)
2908     `(setcar (nthcdr 4 ,info) ,method)))
2909 (defmacro gnus-info-set-params (info params &optional extend)
2910   (if extend
2911       `(gnus-info-set-entry ,info ,params 5)
2912     `(setcar (nthcdr 5 ,info) ,params)))
2913
2914 (defun gnus-info-set-entry (info entry number)
2915   ;; Extend the info until we have enough elements.
2916   (while (<= (length info) number)
2917     (nconc info (list nil)))
2918   ;; Set the entry.
2919   (setcar (nthcdr number info) entry))
2920
2921 (defmacro gnus-info-set-level (info level)
2922   `(let ((rank (cdr ,info)))
2923      (if (consp (car rank))
2924          (setcar (car rank) ,level)
2925        (setcar rank ,level))))
2926 (defmacro gnus-info-set-score (info score)
2927   `(let ((rank (cdr ,info)))
2928      (if (consp (car rank))
2929          (setcdr (car rank) ,score)
2930        (setcar rank (cons (car rank) ,score)))))
2931
2932 (defmacro gnus-get-info (group)
2933   `(nth 2 (gnus-gethash ,group gnus-newsrc-hashtb)))
2934
2935 ;;; Load the compatibility functions.
2936
2937 (require 'gnus-ems)
2938
2939 \f
2940 ;;;
2941 ;;; Shutdown
2942 ;;;
2943
2944 (defvar gnus-shutdown-alist nil)
2945
2946 (defun gnus-add-shutdown (function &rest symbols)
2947   "Run FUNCTION whenever one of SYMBOLS is shut down."
2948   (push (cons function symbols) gnus-shutdown-alist))
2949
2950 (defun gnus-shutdown (symbol)
2951   "Shut down everything that waits for SYMBOL."
2952   (let ((alist gnus-shutdown-alist)
2953         entry)
2954     (while (setq entry (pop alist))
2955       (when (memq symbol (cdr entry))
2956         (funcall (car entry))))))
2957
2958 \f
2959 ;;;
2960 ;;; Gnus Utility Functions
2961 ;;;
2962
2963 (defun gnus-find-subscribed-addresses ()
2964   "Return a regexp matching the addresses of all subscribed mail groups.
2965 It consists of the `to-address' or `to-list' parameter of all groups
2966 with a `subscribed' parameter."
2967   (let (group address addresses)
2968     (dolist (entry (cdr gnus-newsrc-alist))
2969       (setq group (car entry))
2970       (when (gnus-parameter-subscribed group)
2971         (setq address (mail-strip-quoted-names
2972                        (or (gnus-group-fast-parameter group 'to-address)
2973                            (gnus-group-fast-parameter group 'to-list))))
2974         (when address
2975           (add-to-list 'addresses address))))
2976     (when addresses
2977       (list (mapconcat 'regexp-quote addresses "\\|")))))
2978
2979 (defmacro gnus-string-or (&rest strings)
2980   "Return the first element of STRINGS that is a non-blank string.
2981 STRINGS will be evaluated in normal `or' order."
2982   `(gnus-string-or-1 ',strings))
2983
2984 (defun gnus-string-or-1 (strings)
2985   (let (string)
2986     (while strings
2987       (setq string (eval (pop strings)))
2988       (if (string-match "^[ \t]*$" string)
2989           (setq string nil)
2990         (setq strings nil)))
2991     string))
2992
2993 (defun gnus-version (&optional arg)
2994   "Version number of this version of Gnus.
2995 If ARG, insert string at point."
2996   (interactive "P")
2997   (if arg
2998       (insert (message gnus-version))
2999     (message gnus-version)))
3000
3001 (defun gnus-continuum-version (&optional version)
3002   "Return VERSION as a floating point number."
3003   (interactive)
3004   (unless version
3005     (setq version gnus-version))
3006   (when (or (string-match "^\\([^ ]+\\)? ?Gnus v?\\([0-9.]+\\)$" version)
3007             (string-match "^\\(.?\\)gnus-\\([0-9.]+\\)$" version))
3008     (let ((alpha (and (match-beginning 1) (match-string 1 version)))
3009           (number (match-string 2 version))
3010           major minor least)
3011       (unless (string-match
3012                "\\([0-9]\\)\\.\\([0-9]+\\)\\.?\\([0-9]+\\)?" number)
3013         (error "Invalid version string: %s" version))
3014       (setq major (string-to-number (match-string 1 number))
3015             minor (string-to-number (match-string 2 number))
3016             least (if (match-beginning 3)
3017                       (string-to-number (match-string 3 number))
3018                     0))
3019       (string-to-number
3020        (if (zerop major)
3021              (format "%s00%02d%02d"
3022                      (if (member alpha '("(ding)" "d"))
3023                          "4.99"
3024                        (+ 5 (* 0.02
3025                                (abs
3026                                 (- (mm-char-int (aref (downcase alpha) 0))
3027                                    (mm-char-int ?t))))
3028                           -0.01))
3029                      minor least)
3030          (format "%d.%02d%02d" major minor least))))))
3031
3032 (defun gnus-info-find-node (&optional nodename)
3033   "Find Info documentation of Gnus."
3034   (interactive)
3035   ;; Enlarge info window if needed.
3036   (let (gnus-info-buffer)
3037     (Info-goto-node (or nodename (cadr (assq major-mode gnus-info-nodes))))
3038     (setq gnus-info-buffer (current-buffer))
3039     (gnus-configure-windows 'info)))
3040
3041 ;;;
3042 ;;; gnus-interactive
3043 ;;;
3044
3045 (defvar gnus-current-prefix-symbol nil
3046   "Current prefix symbol.")
3047
3048 (defvar gnus-current-prefix-symbols nil
3049   "List of current prefix symbols.")
3050
3051 (defun gnus-interactive (string &optional params)
3052   "Return a list that can be fed to `interactive'.
3053 See `interactive' for full documentation.
3054
3055 Adds the following specs:
3056
3057 y -- The current symbolic prefix.
3058 Y -- A list of the current symbolic prefix(es).
3059 A -- Article number.
3060 H -- Article header.
3061 g -- Group name."
3062   (let ((i 0)
3063         out c prompt)
3064     (while (< i (length string))
3065       (string-match ".\\([^\n]*\\)\n?" string i)
3066       (setq c (aref string i))
3067       (when (match-end 1)
3068         (setq prompt (match-string 1 string)))
3069       (setq i (match-end 0))
3070       ;; We basically emulate just about everything that
3071       ;; `interactive' does, but add the specs listed above.
3072       (push
3073        (cond
3074         ((= c ?a)
3075          (completing-read prompt obarray 'fboundp t))
3076         ((= c ?b)
3077          (read-buffer prompt (current-buffer) t))
3078         ((= c ?B)
3079          (read-buffer prompt (other-buffer (current-buffer))))
3080         ((= c ?c)
3081          (read-char))
3082         ((= c ?C)
3083          (completing-read prompt obarray 'commandp t))
3084         ((= c ?d)
3085          (point))
3086         ((= c ?D)
3087          (read-file-name prompt nil default-directory 'lambda))
3088         ((= c ?f)
3089          (read-file-name prompt nil nil 'lambda))
3090         ((= c ?F)
3091          (read-file-name prompt))
3092         ((= c ?k)
3093          (read-key-sequence prompt))
3094         ((= c ?K)
3095          (error "Not implemented spec"))
3096         ((= c ?e)
3097          (error "Not implemented spec"))
3098         ((= c ?m)
3099          (mark))
3100         ((= c ?N)
3101          (error "Not implemented spec"))
3102         ((= c ?n)
3103          (string-to-number (read-from-minibuffer prompt)))
3104         ((= c ?p)
3105          (prefix-numeric-value current-prefix-arg))
3106         ((= c ?P)
3107          current-prefix-arg)
3108         ((= c ?r)
3109          'gnus-prefix-nil)
3110         ((= c ?s)
3111          (read-string prompt))
3112         ((= c ?S)
3113          (intern (read-string prompt)))
3114         ((= c ?v)
3115          (read-variable prompt))
3116         ((= c ?x)
3117          (read-minibuffer prompt))
3118         ((= c ?x)
3119          (eval-minibuffer prompt))
3120         ;; And here the new specs come.
3121         ((= c ?y)
3122          gnus-current-prefix-symbol)
3123         ((= c ?Y)
3124          gnus-current-prefix-symbols)
3125         ((= c ?g)
3126          (gnus-group-group-name))
3127         ((= c ?A)
3128          (gnus-summary-skip-intangible)
3129          (or (get-text-property (point) 'gnus-number)
3130              (gnus-summary-last-subject)))
3131         ((= c ?H)
3132          (gnus-data-header (gnus-data-find (gnus-summary-article-number))))
3133         (t
3134          (error "Non-implemented spec")))
3135        out)
3136       (cond
3137        ((= c ?r)
3138         (push (if (< (point) (mark)) (point) (mark)) out)
3139         (push (if (> (point) (mark)) (point) (mark)) out))))
3140     (setq out (delq 'gnus-prefix-nil out))
3141     (nreverse out)))
3142
3143 (defun gnus-symbolic-argument (&optional arg)
3144   "Read a symbolic argument and a command, and then execute command."
3145   (interactive "P")
3146   (let* ((in-command (this-command-keys))
3147          (command in-command)
3148          gnus-current-prefix-symbols
3149          gnus-current-prefix-symbol
3150          syms)
3151     (while (equal in-command command)
3152       (message "%s-" (key-description (this-command-keys)))
3153       (push (intern (char-to-string (read-char))) syms)
3154       (setq command (read-key-sequence nil t)))
3155     (setq gnus-current-prefix-symbols (nreverse syms)
3156           gnus-current-prefix-symbol (car gnus-current-prefix-symbols))
3157     (call-interactively (key-binding command t))))
3158
3159 ;;; More various functions.
3160
3161 (defsubst gnus-check-backend-function (func group)
3162   "Check whether GROUP supports function FUNC.
3163 GROUP can either be a string (a group name) or a select method."
3164   (ignore-errors
3165     (let ((method (if (stringp group)
3166                       (car (gnus-find-method-for-group group))
3167                     group)))
3168       (unless (featurep method)
3169         (require method))
3170       (fboundp (intern (format "%s-%s" method func))))))
3171
3172 (defun gnus-group-read-only-p (&optional group)
3173   "Check whether GROUP supports editing or not.
3174 If GROUP is nil, `gnus-newsgroup-name' will be checked instead.  Note
3175 that that variable is buffer-local to the summary buffers."
3176   (let ((group (or group gnus-newsgroup-name)))
3177     (not (gnus-check-backend-function 'request-replace-article group))))
3178
3179 (defun gnus-virtual-group-p (group)
3180   "Say whether GROUP is virtual or not."
3181   (memq 'virtual (assoc (symbol-name (car (gnus-find-method-for-group group)))
3182                         gnus-valid-select-methods)))
3183
3184 (defun gnus-news-group-p (group &optional article)
3185   "Return non-nil if GROUP (and ARTICLE) come from a news server."
3186   (cond ((gnus-member-of-valid 'post group) ;Ordinary news group
3187          t)                             ;is news of course.
3188         ((not (gnus-member-of-valid 'post-mail group)) ;Non-combined.
3189          nil)                           ;must be mail then.
3190         ((vectorp article)              ;Has header info.
3191          (eq (gnus-request-type group (mail-header-id article)) 'news))
3192         ((null article)                 ;Hasn't header info
3193          (eq (gnus-request-type group) 'news)) ;(unknown ==> mail)
3194         ((< article 0)                  ;Virtual message
3195          nil)                           ;we don't know, guess mail.
3196         (t                              ;Has positive number
3197          (eq (gnus-request-type group article) 'news)))) ;use it.
3198
3199 ;; Returns a list of writable groups.
3200 (defun gnus-writable-groups ()
3201   (let ((alist gnus-newsrc-alist)
3202         groups group)
3203     (while (setq group (car (pop alist)))
3204       (unless (gnus-group-read-only-p group)
3205         (push group groups)))
3206     (nreverse groups)))
3207
3208 ;; Check whether to use long file names.
3209 (defun gnus-use-long-file-name (symbol)
3210   ;; The variable has to be set...
3211   (and gnus-use-long-file-name
3212        ;; If it isn't a list, then we return t.
3213        (or (not (listp gnus-use-long-file-name))
3214            ;; If it is a list, and the list contains `symbol', we
3215            ;; return nil.
3216            (not (memq symbol gnus-use-long-file-name)))))
3217
3218 ;; Generate a unique new group name.
3219 (defun gnus-generate-new-group-name (leaf)
3220   (let ((name leaf)
3221         (num 0))
3222     (while (gnus-gethash name gnus-newsrc-hashtb)
3223       (setq name (concat leaf "<" (int-to-string (setq num (1+ num))) ">")))
3224     name))
3225
3226 (defun gnus-ephemeral-group-p (group)
3227   "Say whether GROUP is ephemeral or not."
3228   (gnus-group-get-parameter group 'quit-config t))
3229
3230 (defun gnus-group-quit-config (group)
3231   "Return the quit-config of GROUP."
3232   (gnus-group-get-parameter group 'quit-config t))
3233
3234 (defun gnus-kill-ephemeral-group (group)
3235   "Remove ephemeral GROUP from relevant structures."
3236   (gnus-sethash group nil gnus-newsrc-hashtb))
3237
3238 (defun gnus-simplify-mode-line ()
3239   "Make mode lines a bit simpler."
3240   (setq mode-line-modified (cdr gnus-mode-line-modified))
3241   (when (listp mode-line-format)
3242     (make-local-variable 'mode-line-format)
3243     (setq mode-line-format (copy-sequence mode-line-format))
3244     (when (equal (nth 3 mode-line-format) "   ")
3245       (setcar (nthcdr 3 mode-line-format) " "))))
3246
3247 ;;; Servers and groups.
3248
3249 (defsubst gnus-server-add-address (method)
3250   (let ((method-name (symbol-name (car method))))
3251     (if (and (memq 'address (assoc method-name gnus-valid-select-methods))
3252              (not (assq (intern (concat method-name "-address")) method))
3253              (memq 'physical-address (assq (car method)
3254                                            gnus-valid-select-methods)))
3255         (append method (list (list (intern (concat method-name "-address"))
3256                                    (nth 1 method))))
3257       method)))
3258
3259 (defsubst gnus-server-to-method (server)
3260   "Map virtual server names to select methods."
3261   (or (and server (listp server) server)
3262       (cdr (assoc server gnus-server-method-cache))
3263       (let ((result
3264              (or
3265               ;; Perhaps this is the native server?
3266               (and (equal server "native") gnus-select-method)
3267               ;; It should be in the server alist.
3268               (cdr (assoc server gnus-server-alist))
3269               ;; It could be in the predefined server alist.
3270               (cdr (assoc server gnus-predefined-server-alist))
3271               ;; If not, we look through all the opened server
3272               ;; to see whether we can find it there.
3273               (let ((opened gnus-opened-servers))
3274                 (while (and opened
3275                             (not (equal server (format "%s:%s" (caaar opened)
3276                                                        (cadaar opened)))))
3277                   (pop opened))
3278                 (caar opened))
3279               ;; It could be a named method, search all servers
3280               (let ((servers gnus-secondary-select-methods))
3281                 (while (and servers
3282                             (not (equal server (format "%s:%s" (caar servers)
3283                                                        (cadar servers)))))
3284                   (pop servers))
3285                 (car servers))
3286               ;; This could be some sort of foreign server that I
3287               ;; simply haven't opened (yet).  Do a brute-force scan
3288               ;; of the entire gnus-newsrc-alist for the server name
3289               ;; of every method.  As a side-effect, loads the
3290               ;; gnus-server-method-cache so this only happens once,
3291               ;; if at all.
3292               (let (match)
3293                 (mapcar
3294                  (lambda (info)
3295                    (let ((info-method (gnus-info-method info)))
3296                      (unless (stringp info-method)
3297                        (let ((info-server (gnus-method-to-server info-method)))
3298                          (when (equal server info-server)
3299                            (setq match info-method))))))
3300                  (cdr gnus-newsrc-alist))
3301                 match))))
3302         (when result
3303           (push (cons server result) gnus-server-method-cache))
3304         result)))
3305
3306 (defsubst gnus-method-to-server (method)
3307   (catch 'server-name
3308     (setq method (or method gnus-select-method))
3309
3310     ;; Perhaps it is already in the cache.
3311     (mapc (lambda (name-method)
3312             (if (equal (cdr name-method) method)
3313                 (throw 'server-name (car name-method))))
3314           gnus-server-method-cache)
3315
3316     (mapc
3317      (lambda (server-alist)
3318        (mapc (lambda (name-method)
3319                (when (gnus-methods-equal-p (cdr name-method) method)
3320                  (unless (member name-method gnus-server-method-cache)
3321                    (push name-method gnus-server-method-cache))
3322                  (throw 'server-name (car name-method))))
3323              server-alist))
3324      (let ((alists (list gnus-server-alist
3325                          gnus-predefined-server-alist)))
3326        (if gnus-select-method
3327            (push (list (cons "native" gnus-select-method)) alists))
3328        alists))
3329
3330     (let* ((name (if (member (cadr method) '(nil ""))
3331                      (format "%s" (car method))
3332                    (format "%s:%s" (car method) (cadr method))))
3333            (name-method (cons name method)))
3334       (unless (member name-method gnus-server-method-cache)
3335         (push name-method gnus-server-method-cache))
3336       name)))
3337
3338 (defsubst gnus-server-get-method (group method)
3339   ;; Input either a server name, and extended server name, or a
3340   ;; select method, and return a select method.
3341   (cond ((stringp method)
3342          (gnus-server-to-method method))
3343         ((equal method gnus-select-method)
3344          gnus-select-method)
3345         ((and (stringp (car method))
3346               group)
3347          (gnus-server-extend-method group method))
3348         ((and method
3349               (not group)
3350               (equal (cadr method) ""))
3351          method)
3352         (t
3353          (gnus-server-add-address method))))
3354
3355 (defmacro gnus-method-equal (ss1 ss2)
3356   "Say whether two servers are equal."
3357   `(let ((s1 ,ss1)
3358          (s2 ,ss2))
3359      (or (equal s1 s2)
3360          (and (= (length s1) (length s2))
3361               (progn
3362                 (while (and s1 (member (car s1) s2))
3363                   (setq s1 (cdr s1)))
3364                 (null s1))))))
3365
3366 (defun gnus-methods-equal-p (m1 m2)
3367   (let ((m1 (or m1 gnus-select-method))
3368         (m2 (or m2 gnus-select-method)))
3369     (or (equal m1 m2)
3370         (and (eq (car m1) (car m2))
3371              (or (not (memq 'address (assoc (symbol-name (car m1))
3372                                             gnus-valid-select-methods)))
3373                  (equal (nth 1 m1) (nth 1 m2)))))))
3374
3375 (defun gnus-server-equal (m1 m2)
3376   "Say whether two methods are equal."
3377   (let ((m1 (cond ((null m1) gnus-select-method)
3378                   ((stringp m1) (gnus-server-to-method m1))
3379                   (t m1)))
3380         (m2 (cond ((null m2) gnus-select-method)
3381                   ((stringp m2) (gnus-server-to-method m2))
3382                   (t m2))))
3383     (gnus-method-equal m1 m2)))
3384
3385 (defun gnus-servers-using-backend (backend)
3386   "Return a list of known servers using BACKEND."
3387   (let ((opened gnus-opened-servers)
3388         out)
3389     (while opened
3390       (when (eq backend (caaar opened))
3391         (push (caar opened) out))
3392       (pop opened))
3393     out))
3394
3395 (defun gnus-archive-server-wanted-p ()
3396   "Say whether the user wants to use the archive server."
3397   (cond
3398    ((or (not gnus-message-archive-method)
3399         (not gnus-message-archive-group))
3400     nil)
3401    ((and gnus-message-archive-method gnus-message-archive-group)
3402     t)
3403    (t
3404     (let ((active (cadr (assq 'nnfolder-active-file
3405                               gnus-message-archive-method))))
3406       (and active
3407            (file-exists-p active))))))
3408
3409 (defsubst gnus-method-to-server-name (method)
3410   (concat
3411    (format "%s" (car method))
3412    (when (and
3413           (or (assoc (format "%s" (car method))
3414                      (gnus-methods-using 'address))
3415               (gnus-server-equal method gnus-message-archive-method))
3416           (nth 1 method)
3417           (not (string= (nth 1 method) "")))
3418      (concat "+" (nth 1 method)))))
3419
3420 (defsubst gnus-method-to-full-server-name (method)
3421   (format "%s+%s" (car method) (nth 1 method)))
3422
3423 (defun gnus-group-prefixed-name (group method &optional full)
3424   "Return the whole name from GROUP and METHOD.
3425 Call with full set to get the fully qualified group name (even if the
3426 server is native)."
3427   (when (stringp method)
3428     (setq method (gnus-server-to-method method)))
3429   (if (or (not method)
3430           (and (not full) (gnus-server-equal method "native"))
3431           ;;;!!! This might not be right.  We'll see...
3432           ;(string-match ":" group)
3433           )
3434       group
3435     (concat (gnus-method-to-server-name method) ":" group)))
3436
3437 (defun gnus-group-guess-prefixed-name (group)
3438   "Guess the whole name from GROUP and METHOD."
3439   (gnus-group-prefixed-name group (gnus-find-method-for-group
3440                                group)))
3441
3442 (defun gnus-group-full-name (group method)
3443   "Return the full name from GROUP and METHOD, even if the method is native."
3444   (gnus-group-prefixed-name group method t))
3445
3446 (defun gnus-group-guess-full-name (group)
3447   "Guess the full name from GROUP, even if the method is native."
3448   (if (gnus-group-prefixed-p group)
3449       group
3450     (gnus-group-full-name group (gnus-find-method-for-group group))))
3451
3452 (defun gnus-group-guess-full-name-from-command-method (group)
3453   "Guess the full name from GROUP, even if the method is native."
3454   (if (gnus-group-prefixed-p group)
3455       group
3456     (gnus-group-full-name group gnus-command-method)))
3457
3458 (defun gnus-group-real-prefix (group)
3459   "Return the prefix of the current group name."
3460   (if (stringp group)
3461       (if (string-match "^[^:]+:" group)
3462           (substring group 0 (match-end 0))
3463         "")
3464     nil))
3465
3466 (defun gnus-group-short-name (group)
3467   "Return the short group name."
3468   (let ((prefix (gnus-group-real-prefix group)))
3469     (if (< 0 (length prefix))
3470         (substring group (length prefix) nil)
3471       group)))
3472
3473 (defun gnus-group-prefixed-p (group)
3474   "Return the prefix of the current group name."
3475   (< 0 (length (gnus-group-real-prefix group))))
3476
3477 (defun gnus-summary-buffer-name (group)
3478   "Return the summary buffer name of GROUP."
3479   (concat "*Summary " (gnus-group-decoded-name group) "*"))
3480
3481 (defun gnus-group-method (group)
3482   "Return the server or method used for selecting GROUP.
3483 You should probably use `gnus-find-method-for-group' instead."
3484   (let ((prefix (gnus-group-real-prefix group)))
3485     (if (equal prefix "")
3486         gnus-select-method
3487       (let ((servers gnus-opened-servers)
3488             (server "")
3489             backend possible found)
3490         (if (string-match "^[^\\+]+\\+" prefix)
3491             (setq backend (intern (substring prefix 0 (1- (match-end 0))))
3492                   server (substring prefix (match-end 0) (1- (length prefix))))
3493           (setq backend (intern (substring prefix 0 (1- (length prefix))))))
3494         (while servers
3495           (when (eq (caaar servers) backend)
3496             (setq possible (caar servers))
3497             (when (equal (cadaar servers) server)
3498               (setq found (caar servers))))
3499           (pop servers))
3500         (or (car (rassoc found gnus-server-alist))
3501             found
3502             (car (rassoc possible gnus-server-alist))
3503             possible
3504             (list backend server))))))
3505
3506 (defsubst gnus-native-method-p (method)
3507   "Return whether METHOD is the native select method."
3508   (gnus-method-equal method gnus-select-method))
3509
3510 (defsubst gnus-secondary-method-p (method)
3511   "Return whether METHOD is a secondary select method."
3512   (let ((methods gnus-secondary-select-methods)
3513         (gmethod (inline (gnus-server-get-method nil method))))
3514     (while (and methods
3515                 (not (gnus-method-equal
3516                       (inline (gnus-server-get-method nil (car methods)))
3517                       gmethod)))
3518       (setq methods (cdr methods)))
3519     methods))
3520
3521 (defun gnus-method-simplify (method)
3522   "Return the shortest uniquely identifying string or method for METHOD."
3523   (cond ((stringp method)
3524          method)
3525         ((gnus-native-method-p method)
3526          nil)
3527         ((gnus-secondary-method-p method)
3528          (format "%s:%s" (nth 0 method) (nth 1 method)))
3529         (t
3530          method)))
3531
3532 (defun gnus-groups-from-server (server)
3533   "Return a list of all groups that are fetched from SERVER."
3534   (let ((alist (cdr gnus-newsrc-alist))
3535         info groups)
3536     (while (setq info (pop alist))
3537       (when (gnus-server-equal (gnus-info-method info) server)
3538         (push (gnus-info-group info) groups)))
3539     (sort groups 'string<)))
3540
3541 (defun gnus-group-foreign-p (group)
3542   "Say whether a group is foreign or not."
3543   (and (not (gnus-group-native-p group))
3544        (not (gnus-group-secondary-p group))))
3545
3546 (defun gnus-group-native-p (group)
3547   "Say whether the group is native or not."
3548   (not (string-match ":" group)))
3549
3550 (defun gnus-group-secondary-p (group)
3551   "Say whether the group is secondary or not."
3552   (gnus-secondary-method-p (gnus-find-method-for-group group)))
3553
3554 (defun gnus-parameters-get-parameter (group)
3555   "Return the group parameters for GROUP from `gnus-parameters'."
3556   (let (params-list)
3557     (dolist (elem gnus-parameters)
3558       (when (string-match (car elem) group)
3559         (setq params-list
3560               (nconc (gnus-expand-group-parameters
3561                       (car elem) (cdr elem) group)
3562                      params-list))))
3563     params-list))
3564
3565 (defun gnus-expand-group-parameter (match value group)
3566   "Use MATCH to expand VALUE in GROUP."
3567   (with-temp-buffer
3568     (insert group)
3569     (goto-char (point-min))
3570     (while (re-search-forward match nil t)
3571       (replace-match value))
3572     (buffer-string)))
3573
3574 (defun gnus-expand-group-parameters (match parameters group)
3575   "Go through PARAMETERS and expand them according to the match data."
3576   (let (new)
3577     (dolist (elem parameters)
3578       (if (and (stringp (cdr elem))
3579                (string-match "\\\\[0-9&]" (cdr elem)))
3580           (push (cons (car elem)
3581                       (gnus-expand-group-parameter match (cdr elem) group))
3582                 new)
3583         (push elem new)))
3584     new))
3585
3586 (defun gnus-group-fast-parameter (group symbol &optional allow-list)
3587   "For GROUP, return the value of SYMBOL.
3588
3589 You should call this in the `gnus-group-buffer' buffer.
3590 The function `gnus-group-find-parameter' will do that for you."
3591   ;; The speed trick:  No cons'ing and quit early.
3592   (let* ((params (funcall gnus-group-get-parameter-function group))
3593          ;; Start easy, check the "real" group parameters.
3594          (simple-results
3595           (gnus-group-parameter-value params symbol allow-list t)))
3596     (if simple-results
3597         ;; Found results; return them.
3598         (car simple-results)
3599       ;; We didn't found it there, try `gnus-parameters'.
3600       (let ((result nil)
3601             (head nil)
3602             (tail gnus-parameters))
3603         ;; A good old-fashioned non-cl loop.
3604         (while tail
3605           (setq head (car tail)
3606                 tail (cdr tail))
3607           ;; The car is regexp matching for matching the group name.
3608           (when (string-match (car head) group)
3609             ;; The cdr is the parameters.
3610             (setq result (gnus-group-parameter-value (cdr head)
3611                                                      symbol allow-list))
3612             (when result
3613               ;; Expand if necessary.
3614               (if (and (stringp result) (string-match "\\\\[0-9&]" result))
3615                   (setq result (gnus-expand-group-parameter (car head)
3616                                                             result group)))
3617               ;; Exit the loop early.
3618               (setq tail nil))))
3619         ;; Done.
3620         result))))
3621
3622 (defun gnus-group-find-parameter (group &optional symbol allow-list)
3623   "Return the group parameters for GROUP.
3624 If SYMBOL, return the value of that symbol in the group parameters.
3625
3626 If you call this function inside a loop, consider using the faster
3627 `gnus-group-fast-parameter' instead."
3628   (save-excursion
3629     (set-buffer gnus-group-buffer)
3630     (if symbol
3631         (gnus-group-fast-parameter group symbol allow-list)
3632       (nconc
3633        (copy-sequence
3634         (funcall gnus-group-get-parameter-function group))
3635        (gnus-parameters-get-parameter group)))))
3636
3637 (defun gnus-group-get-parameter (group &optional symbol allow-list)
3638   "Return the group parameters for GROUP.
3639 If SYMBOL, return the value of that symbol in the group parameters.
3640 Most functions should use `gnus-group-find-parameter', which
3641 also examines the topic parameters."
3642   (let ((params (gnus-info-params (gnus-get-info group))))
3643     (if symbol
3644         (gnus-group-parameter-value params symbol allow-list)
3645       params)))
3646
3647 (defun gnus-group-parameter-value (params symbol &optional
3648                                           allow-list present-p)
3649   "Return the value of SYMBOL in group PARAMS."
3650   ;; We only wish to return group parameters (dotted lists) and
3651   ;; not local variables, which may have the same names.
3652   ;; But first we handle single elements...
3653   (or (car (memq symbol params))
3654       ;; Handle alist.
3655       (let (elem)
3656         (catch 'found
3657           (while (setq elem (pop params))
3658             (when (and (consp elem)
3659                        (eq (car elem) symbol)
3660                        (or allow-list
3661                            (atom (cdr elem))))
3662               (throw 'found (if present-p (list (cdr elem))
3663                               (cdr elem)))))))))
3664
3665 (defun gnus-group-add-parameter (group param)
3666   "Add parameter PARAM to GROUP."
3667   (let ((info (gnus-get-info group)))
3668     (when info
3669       (gnus-group-remove-parameter group (if (consp param) (car param) param))
3670       ;; Cons the new param to the old one and update.
3671       (gnus-group-set-info (cons param (gnus-info-params info))
3672                            group 'params))))
3673
3674 (defun gnus-group-set-parameter (group name value)
3675   "Set parameter NAME to VALUE in GROUP."
3676   (let ((info (gnus-get-info group)))
3677     (when info
3678       (gnus-group-remove-parameter group name)
3679       (let ((old-params (gnus-info-params info))
3680             (new-params (list (cons name value))))
3681         (while old-params
3682           (when (or (not (listp (car old-params)))
3683                     (not (eq (caar old-params) name)))
3684             (setq new-params (append new-params (list (car old-params)))))
3685           (setq old-params (cdr old-params)))
3686         (gnus-group-set-info new-params group 'params)))))
3687
3688 (defun gnus-group-remove-parameter (group name)
3689   "Remove parameter NAME from GROUP."
3690   (let ((info (gnus-get-info group)))
3691     (when info
3692       (let ((params (gnus-info-params info)))
3693         (when params
3694           (setq params (delq name params))
3695           (while (assq name params)
3696             (gnus-pull name params))
3697           (gnus-info-set-params info params))))))
3698
3699 (defun gnus-group-add-score (group &optional score)
3700   "Add SCORE to the GROUP score.
3701 If SCORE is nil, add 1 to the score of GROUP."
3702   (let ((info (gnus-get-info group)))
3703     (when info
3704       (gnus-info-set-score info (+ (gnus-info-score info) (or score 1))))))
3705
3706 (defun gnus-short-group-name (group &optional levels)
3707   "Collapse GROUP name LEVELS.
3708 Select methods are stripped and any remote host name is stripped down to
3709 just the host name."
3710   (let* ((name "")
3711          (foreign "")
3712          (depth 0)
3713          (skip 1)
3714          (levels (or levels
3715                      gnus-group-uncollapsed-levels
3716                      (progn
3717                        (while (string-match "\\." group skip)
3718                          (setq skip (match-end 0)
3719                                depth (+ depth 1)))
3720                        depth))))
3721     ;; Separate foreign select method from group name and collapse.
3722    ;; If method contains a server, collapse to non-domain server name,
3723     ;; otherwise collapse to select method.
3724     (let* ((colon (string-match ":" group))
3725            (server (and colon (substring group 0 colon)))
3726            (plus (and server (string-match "+" server))))
3727       (when server
3728         (if plus
3729             (setq foreign (substring server (+ 1 plus)
3730                                      (string-match "\\." server))
3731                   group (substring group (+ 1 colon)))
3732           (setq foreign server
3733                 group (substring group (+ 1 colon))))
3734         (setq foreign (concat foreign ":")))
3735       ;; Collapse group name leaving LEVELS uncollapsed elements
3736       (let* ((slist (split-string group "/"))
3737              (slen (length slist))
3738              (dlist (split-string group "\\."))
3739              (dlen (length dlist))
3740              glist
3741              glen
3742              gsep
3743              res)
3744         (if (> slen dlen)
3745             (setq glist slist
3746                   glen slen
3747                   gsep "/")
3748           (setq glist dlist
3749                 glen dlen
3750                 gsep "."))
3751         (setq levels (- glen levels))
3752         (dolist (g glist)
3753           (push (if (>= (decf levels) 0)
3754                     (if (zerop (length g))
3755                         ""
3756                       (substring g 0 1))
3757                   g)
3758                 res))
3759         (concat foreign (mapconcat 'identity (nreverse res) gsep))))))
3760
3761 (defun gnus-narrow-to-body ()
3762   "Narrow to the body of an article."
3763   (narrow-to-region
3764    (progn
3765      (goto-char (point-min))
3766      (or (search-forward "\n\n" nil t)
3767          (point-max)))
3768    (point-max)))
3769
3770 \f
3771 ;;;
3772 ;;; Kill file handling.
3773 ;;;
3774
3775 (defun gnus-apply-kill-file ()
3776   "Apply a kill file to the current newsgroup.
3777 Returns the number of articles marked as read."
3778   (if (or (file-exists-p (gnus-newsgroup-kill-file nil))
3779           (file-exists-p (gnus-newsgroup-kill-file gnus-newsgroup-name)))
3780       (gnus-apply-kill-file-internal)
3781     0))
3782
3783 (defun gnus-kill-save-kill-buffer ()
3784   (let ((file (gnus-newsgroup-kill-file gnus-newsgroup-name)))
3785     (when (get-file-buffer file)
3786       (save-excursion
3787         (set-buffer (get-file-buffer file))
3788         (when (buffer-modified-p)
3789           (save-buffer))
3790         (kill-buffer (current-buffer))))))
3791
3792 (defcustom gnus-kill-file-name "KILL"
3793   "Suffix of the kill files."
3794   :group 'gnus-score-kill
3795   :group 'gnus-score-files
3796   :type 'string)
3797
3798 (defun gnus-newsgroup-kill-file (newsgroup)
3799   "Return the name of a kill file name for NEWSGROUP.
3800 If NEWSGROUP is nil, return the global kill file name instead."
3801   (cond
3802    ;; The global KILL file is placed at top of the directory.
3803    ((or (null newsgroup)
3804         (string-equal newsgroup ""))
3805     (expand-file-name gnus-kill-file-name
3806                       gnus-kill-files-directory))
3807    ;; Append ".KILL" to newsgroup name.
3808    ((gnus-use-long-file-name 'not-kill)
3809     (expand-file-name (concat (gnus-newsgroup-savable-name newsgroup)
3810                               "." gnus-kill-file-name)
3811                       gnus-kill-files-directory))
3812    ;; Place "KILL" under the hierarchical directory.
3813    (t
3814     (expand-file-name (concat (gnus-newsgroup-directory-form newsgroup)
3815                               "/" gnus-kill-file-name)
3816                       gnus-kill-files-directory))))
3817
3818 ;;; Server things.
3819
3820 (defun gnus-member-of-valid (symbol group)
3821   "Find out if GROUP has SYMBOL as part of its \"valid\" spec."
3822   (memq symbol (assoc
3823                 (symbol-name (car (gnus-find-method-for-group group)))
3824                 gnus-valid-select-methods)))
3825
3826 (defun gnus-method-option-p (method option)
3827   "Return non-nil if select METHOD has OPTION as a parameter."
3828   (when (stringp method)
3829     (setq method (gnus-server-to-method method)))
3830   (memq option (assoc (format "%s" (car method))
3831                       gnus-valid-select-methods)))
3832
3833 (defun gnus-similar-server-opened (method)
3834   (let ((opened gnus-opened-servers))
3835     (while (and method opened)
3836       (when (and (equal (cadr method) (cadaar opened))
3837                  (equal (car method) (caaar opened))
3838                  (not (equal method (caar opened))))
3839         (setq method nil))
3840       (pop opened))
3841     (not method)))
3842
3843 (defun gnus-server-extend-method (group method)
3844   ;; This function "extends" a virtual server.  If the server is
3845   ;; "hello", and the select method is ("hello" (my-var "something"))
3846   ;; in the group "alt.alt", this will result in a new virtual server
3847   ;; called "hello+alt.alt".
3848   (if (or (not (inline (gnus-similar-server-opened method)))
3849           (not (cddr method)))
3850       method
3851     `(,(car method) ,(concat (cadr method) "+" group)
3852       (,(intern (format "%s-address" (car method))) ,(cadr method))
3853       ,@(cddr method))))
3854
3855 (defun gnus-server-status (method)
3856   "Return the status of METHOD."
3857   (nth 1 (assoc method gnus-opened-servers)))
3858
3859 (defun gnus-group-name-to-method (group)
3860   "Guess a select method based on GROUP."
3861   (if (string-match ":" group)
3862       (let ((server (substring group 0 (match-beginning 0))))
3863         (if (string-match "\\+" server)
3864             (list (intern (substring server 0 (match-beginning 0)))
3865                   (substring server (match-end 0)))
3866           (list (intern server) "")))
3867     gnus-select-method))
3868
3869 (defun gnus-server-string (server)
3870   "Return a readable string that describes SERVER."
3871   (let* ((server (gnus-server-to-method server))
3872          (address (nth 1 server)))
3873     (if (and address
3874              (not (zerop (length address))))
3875         (format "%s using %s" address (car server))
3876       (format "%s" (car server)))))
3877
3878 (defun gnus-find-method-for-group (group &optional info)
3879   "Find the select method that GROUP uses."
3880   (or gnus-override-method
3881       (and (not group)
3882            gnus-select-method)
3883       (and (not (gnus-group-entry group)) ;; a new group
3884            (gnus-group-name-to-method group))
3885       (let ((info (or info (gnus-get-info group)))
3886             method)
3887         (if (or (not info)
3888                 (not (setq method (gnus-info-method info)))
3889                 (equal method "native"))
3890             gnus-select-method
3891           (setq method
3892                 (cond ((stringp method)
3893                        (inline (gnus-server-to-method method)))
3894                       ((stringp (cadr method))
3895                        (inline (gnus-server-extend-method group method)))
3896                       (t
3897                        method)))
3898           (cond ((equal (cadr method) "")
3899                  method)
3900                 ((null (cadr method))
3901                  (list (car method) ""))
3902                 (t
3903                  (gnus-server-add-address method)))))))
3904
3905 (defun gnus-methods-using (feature)
3906   "Find all methods that have FEATURE."
3907   (let ((valids gnus-valid-select-methods)
3908         outs)
3909     (while valids
3910       (when (memq feature (car valids))
3911         (push (car valids) outs))
3912       (setq valids (cdr valids)))
3913     outs))
3914
3915 (defun gnus-read-group (prompt &optional default)
3916   "Prompt the user for a group name.
3917 Disallow invalid group names."
3918   (let ((prefix "")
3919         group)
3920     (while (not group)
3921       (when (string-match
3922              gnus-invalid-group-regexp
3923              (setq group (read-string (concat prefix prompt)
3924                                       (cons (or default "") 0)
3925                                       'gnus-group-history)))
3926         (let ((match (match-string 0 group)))
3927           ;; Might be okay (e.g. for nnimap), so ask the user:
3928           (unless (and (not (string-match "^$\\|:" match))
3929                        (message-y-or-n-p
3930                         "Proceed and create group anyway? " t
3931 "The group name \"" group "\" contains a forbidden character: \"" match "\".
3932
3933 Usually, it's dangerous to create a group with this name, because it's not
3934 supported by all back ends and servers.  On IMAP servers it should work,
3935 though.  If you are really sure, you can proceed anyway and create the group.
3936
3937 You may customize the variable `gnus-invalid-group-regexp', which currently is
3938 set to \"" gnus-invalid-group-regexp
3939 "\", if you want to get rid of this query permanently."))
3940             (setq prefix (format "Invalid group name: \"%s\".  " group)
3941                   group nil)))))
3942     group))
3943
3944 (defun gnus-read-method (prompt)
3945   "Prompt the user for a method.
3946 Allow completion over sensible values."
3947   (let* ((open-servers
3948           (mapcar (lambda (i) (cons (format "%s:%s" (caar i) (cadar i)) i))
3949                   gnus-opened-servers))
3950          (valid-methods
3951           (let (methods)
3952             (dolist (method gnus-valid-select-methods)
3953               (if (or (memq 'prompt-address method)
3954                       (not (assoc (format "%s:" (car method)) open-servers)))
3955                   (push method methods)))
3956             methods))
3957          (servers
3958           (append valid-methods
3959                   open-servers
3960                   gnus-predefined-server-alist
3961                   gnus-server-alist))
3962          (method
3963           (completing-read
3964            prompt servers
3965            nil t nil 'gnus-method-history)))
3966     (cond
3967      ((equal method "")
3968       (setq method gnus-select-method))
3969      ((assoc method gnus-valid-select-methods)
3970       (let ((address (if (memq 'prompt-address
3971                                (assoc method gnus-valid-select-methods))
3972                          (read-string "Address: ")
3973                        "")))
3974         (or (cadr (assoc (format "%s:%s" method address) open-servers))
3975             (list (intern method) address))))
3976      ((assoc method servers)
3977       method)
3978      (t
3979       (list (intern method) "")))))
3980
3981 ;;; Agent functions
3982
3983 (defun gnus-agent-method-p (method)
3984   "Say whether METHOD is covered by the agent."
3985   (or (eq (car gnus-agent-method-p-cache) method)
3986       (setq gnus-agent-method-p-cache
3987             (cons method
3988                   (member (if (stringp method)
3989                               method
3990                             (gnus-method-to-server method)) gnus-agent-covered-methods))))
3991   (cdr gnus-agent-method-p-cache))
3992
3993 (defun gnus-online (method)
3994   (not
3995    (if gnus-plugged
3996        (eq (cadr (assoc method gnus-opened-servers)) 'offline)
3997      (gnus-agent-method-p method))))
3998
3999 ;;; User-level commands.
4000
4001 ;;;###autoload
4002 (defun gnus-slave-no-server (&optional arg)
4003   "Read network news as a slave, without connecting to the local server."
4004   (interactive "P")
4005   (gnus-no-server arg t))
4006
4007 ;;;###autoload
4008 (defun gnus-no-server (&optional arg slave)
4009   "Read network news.
4010 If ARG is a positive number, Gnus will use that as the startup
4011 level. If ARG is nil, Gnus will be started at level 2.  If ARG is
4012 non-nil and not a positive number, Gnus will prompt the user for the
4013 name of an NNTP server to use.
4014 As opposed to `gnus', this command will not connect to the local
4015 server."
4016   (interactive "P")
4017   (gnus-no-server-1 arg slave))
4018
4019 ;;;###autoload
4020 (defun gnus-slave (&optional arg)
4021   "Read news as a slave."
4022   (interactive "P")
4023   (gnus arg nil 'slave))
4024
4025 ;;;###autoload
4026 (defun gnus-other-frame (&optional arg display)
4027   "Pop up a frame to read news.
4028 This will call one of the Gnus commands which is specified by the user
4029 option `gnus-other-frame-function' (default `gnus') with the argument
4030 ARG if Gnus is not running, otherwise just pop up a Gnus frame.  The
4031 optional second argument DISPLAY should be a standard display string
4032 such as \"unix:0\" to specify where to pop up a frame.  If DISPLAY is
4033 omitted or the function `make-frame-on-display' is not available, the
4034 current display is used."
4035   (interactive "P")
4036   (if (fboundp 'make-frame-on-display)
4037       (unless display
4038         (setq display (gnus-frame-or-window-display-name (selected-frame))))
4039     (setq display nil))
4040   (let ((alive (gnus-alive-p)))
4041     (unless (and alive
4042                  (catch 'found
4043                    (walk-windows
4044                     (lambda (window)
4045                       (when (and (or (not display)
4046                                      (equal display
4047                                             (gnus-frame-or-window-display-name
4048                                              window)))
4049                                  (with-current-buffer (window-buffer window)
4050                                    (string-match "\\`gnus-"
4051                                                  (symbol-name major-mode))))
4052                         (gnus-select-frame-set-input-focus
4053                          (setq gnus-other-frame-object (window-frame window)))
4054                         (select-window window)
4055                         (throw 'found t)))
4056                     'ignore t)))
4057       (gnus-select-frame-set-input-focus
4058        (setq gnus-other-frame-object
4059              (if display
4060                  (make-frame-on-display display gnus-other-frame-parameters)
4061                (make-frame gnus-other-frame-parameters))))
4062       (if alive
4063           (switch-to-buffer gnus-group-buffer)
4064         (funcall gnus-other-frame-function arg)
4065         (add-hook 'gnus-exit-gnus-hook
4066                   '(lambda nil
4067                      (when (and (frame-live-p gnus-other-frame-object)
4068                                 (cdr (frame-list)))
4069                        (delete-frame gnus-other-frame-object))
4070                      (setq gnus-other-frame-object nil)))))))
4071
4072 ;;(setq thing ?                         ; this is a comment
4073 ;;      more 'yes)
4074
4075 ;;;###autoload
4076 (defun gnus (&optional arg dont-connect slave)
4077   "Read network news.
4078 If ARG is non-nil and a positive number, Gnus will use that as the
4079 startup level.  If ARG is non-nil and not a positive number, Gnus will
4080 prompt the user for the name of an NNTP server to use."
4081   (interactive "P")
4082   (unless (byte-code-function-p (symbol-function 'gnus))
4083     (message "You should byte-compile Gnus")
4084     (sit-for 2))
4085   (gnus-1 arg dont-connect slave))
4086
4087 ;; Allow redefinition of Gnus functions.
4088
4089 (gnus-ems-redefine)
4090
4091 (provide 'gnus)
4092
4093 ;;; arch-tag: acebeeab-f331-4f8f-a7ea-89c58c84f636
4094 ;;; gnus.el ends here