lisp/gnus-vis.el

   1 ;;; gnus-vis.el --- display-oriented parts of Gnus
   2 ;; Copyright (C) 1995,96 Free Software Foundation, Inc.
   3
   4 ;; Author: Lars Magne Ingebrigtsen <larsi@ifi.uio.no>
   5 ;;      Per Abrahamsen <abraham@iesd.auc.dk>
   6 ;; Keywords: news
   7
   8 ;; This file is part of GNU Emacs.
   9
  10 ;; GNU Emacs is free software; you can redistribute it and/or modify
  11 ;; it under the terms of the GNU General Public License as published by
  12 ;; the Free Software Foundation; either version 2, or (at your option)
  13 ;; any later version.
  14
  15 ;; GNU Emacs is distributed in the hope that it will be useful,
  16 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 ;; GNU General Public License for more details.
  19
  20 ;; You should have received a copy of the GNU General Public License
  21 ;; along with GNU Emacs; see the file COPYING.  If not, write to the
  22 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  23 ;; Boston, MA 02111-1307, USA.
  24
  25 ;;; Commentary:
  26
  27 ;;; Code:
  28
  29 (require 'gnus)
  30 (require 'gnus-ems)
  31 (require 'easymenu)
  32 (require 'custom)
  33 (require 'browse-url)
  34 (require 'gnus-score)
  35 (eval-when-compile (require 'cl))
  36
  37 (defvar gnus-group-menu-hook nil
  38   "*Hook run after the creation of the group mode menu.")
  39
  40 (defvar gnus-summary-menu-hook nil
  41   "*Hook run after the creation of the summary mode menu.")
  42
  43 (defvar gnus-article-menu-hook nil
  44   "*Hook run after the creation of the article mode menu.")
  45
  46 ;;; Summary highlights.
  47
  48 ;(defvar gnus-summary-highlight-properties
  49 ;  '((unread "ForestGreen" "green")
  50 ;    (ticked "Firebrick" "pink")
  51 ;    (read "black" "white")
  52 ;    (low italic italic)
  53 ;    (high bold bold)
  54 ;    (canceled "yellow/black" "black/yellow")))
  55
  56 ;(defvar gnus-summary-highlight-translation
  57 ;  '(((unread (= mark gnus-unread-mark))
  58 ;     (ticked (or (= mark gnus-ticked-mark) (= mark gnus-dormant-mark)))
  59 ;     (read (not (or (= mark gnus-unread-mark) (= mark gnus-dormant-mark)
  60 ;                   (= mark gnus-ticked-mark) (= mark gnus-canceled-mark))))
  61 ;     (canceled (= mark gnus-canceled-mark)))
  62 ;    ((low (< score gnus-summary-default-score))
  63 ;     (high (> score gnus-summary-default-score)))))
  64
  65 ;(defun gnus-visual-map-face-translation ()
  66 ;  (let ((props gnus-summary-highlight-properties)
  67 ;       (trans gnus-summary-highlight-translation)
  68 ;       map)
  69 ;    (while props)))
  70
  71 ;see gnus-cus.el
  72 ;(defvar gnus-summary-selected-face 'underline
  73 ;  "*Face used for highlighting the current article in the summary buffer.")
  74
  75 ;see gnus-cus.el
  76 ;(defvar gnus-summary-highlight
  77 ;  (cond ((not (eq gnus-display-type 'color))
  78 ;        '(((> score default) . bold)
  79 ;          ((< score default) . italic)))
  80 ;       ((eq gnus-background-mode 'dark)
  81 ;        (list (cons '(= mark gnus-canceled-mark)
  82 ;                    (custom-face-lookup "yellow" "black" nil nil nil nil))
  83 ;              (cons '(and (> score default)
  84 ;                          (or (= mark gnus-dormant-mark)
  85 ;                              (= mark gnus-ticked-mark)))
  86 ;                    (custom-face-lookup "pink" nil nil t nil nil))
  87 ;              (cons '(and (< score default)
  88 ;                          (or (= mark gnus-dormant-mark)
  89 ;                              (= mark gnus-ticked-mark)))
  90 ;                    (custom-face-lookup "pink" nil nil nil t nil))
  91 ;              (cons '(or (= mark gnus-dormant-mark)
  92 ;                         (= mark gnus-ticked-mark))
  93 ;                    (custom-face-lookup "pink" nil nil nil nil nil))
  94
  95 ;              (cons '(and (> score default) (= mark gnus-ancient-mark))
  96 ;                    (custom-face-lookup "SkyBlue" nil nil t nil nil))
  97 ;              (cons '(and (< score default) (= mark gnus-ancient-mark))
  98 ;                    (custom-face-lookup "SkyBlue" nil nil nil t nil))
  99 ;              (cons '(= mark gnus-ancient-mark)
 100 ;                    (custom-face-lookup "SkyBlue" nil nil nil nil nil))
 101
 102 ;              (cons '(and (> score default) (= mark gnus-unread-mark))
 103 ;                    (custom-face-lookup "white" nil nil t nil nil))
 104 ;              (cons '(and (< score default) (= mark gnus-unread-mark))
 105 ;                    (custom-face-lookup "white" nil nil nil t nil))
 106 ;              (cons '(= mark gnus-unread-mark)
 107 ;                    (custom-face-lookup "white" nil nil nil nil nil))
 108
 109 ;              (cons '(> score default) 'bold)
 110 ;              (cons '(< score default) 'italic)))
 111 ;       (t
 112 ;        (list (cons '(= mark gnus-canceled-mark)
 113 ;                    (custom-face-lookup "yellow" "black" nil nil nil nil))
 114 ;              (cons '(and (> score default)
 115 ;                          (or (= mark gnus-dormant-mark)
 116 ;                              (= mark gnus-ticked-mark)))
 117 ;                    (custom-face-lookup "firebrick" nil nil t nil nil))
 118 ;              (cons '(and (< score default)
 119 ;                          (or (= mark gnus-dormant-mark)
 120 ;                              (= mark gnus-ticked-mark)))
 121 ;                    (custom-face-lookup "firebrick" nil nil nil t nil))
 122 ;              (cons '(or (= mark gnus-dormant-mark)
 123 ;                         (= mark gnus-ticked-mark))
 124 ;                    (custom-face-lookup "firebrick" nil nil nil nil nil))
 125
 126 ;              (cons '(and (> score default) (= mark gnus-ancient-mark))
 127 ;                    (custom-face-lookup "RoyalBlue" nil nil t nil nil))
 128 ;              (cons '(and (< score default) (= mark gnus-ancient-mark))
 129 ;                    (custom-face-lookup "RoyalBlue" nil nil nil t nil))
 130 ;              (cons '(= mark gnus-ancient-mark)
 131 ;                    (custom-face-lookup "RoyalBlue" nil nil nil nil nil))
 132
 133 ;              (cons '(and (> score default) (/= mark gnus-unread-mark))
 134 ;                    (custom-face-lookup "DarkGreen" nil nil t nil nil))
 135 ;              (cons '(and (< score default) (/= mark gnus-unread-mark))
 136 ;                    (custom-face-lookup "DarkGreen" nil nil nil t nil))
 137 ;              (cons '(/= mark gnus-unread-mark)
 138 ;                    (custom-face-lookup "DarkGreen" nil nil nil nil nil))
 139
 140 ;              (cons '(> score default) 'bold)
 141 ;              (cons '(< score default) 'italic))))
 142 ;  "*Alist of `(FORM . FACE)'.
 143 ;Summary lines are highlighted with the FACE for the first FORM which
 144 ;evaluate to a non-nil value.
 145
 146 ;Point will be at the beginning of the line when FORM is evaluated.
 147 ;The following can be used for convenience:
 148
 149 ;score:   (gnus-summary-article-score)
 150 ;default: gnus-summary-default-score
 151 ;below:   gnus-summary-mark-below
 152 ;mark:    (gnus-summary-article-mark)
 153
 154 ;The latter can be used like this:
 155 ;   ((= mark gnus-replied-mark) . underline)")
 156
 157 ;;; article highlights
 158
 159 ;see gnus-cus.el
 160 ;(defvar gnus-header-face-alist
 161 ;  (cond ((not (eq gnus-display-type 'color))
 162 ;        '(("" bold italic)))
 163 ;       ((eq gnus-background-mode 'dark)
 164 ;        (list (list "From" nil
 165 ;                    (custom-face-lookup "SkyBlue" nil nil t t nil))
 166 ;              (list "Subject" nil
 167 ;                    (custom-face-lookup "pink" nil nil t t nil))
 168 ;              (list "Newsgroups:.*," nil
 169 ;                    (custom-face-lookup "yellow" nil nil t t nil))
 170 ;              (list ""
 171 ;                    (custom-face-lookup "cyan" nil nil t nil nil)
 172 ;                    (custom-face-lookup "green" nil nil nil t nil))))
 173 ;       (t
 174 ;        (list (list "From" nil
 175 ;                    (custom-face-lookup "RoyalBlue" nil nil t t nil))
 176 ;              (list "Subject" nil
 177 ;                    (custom-face-lookup "firebrick" nil nil t t nil))
 178 ;              (list "Newsgroups:.*," nil
 179 ;                    (custom-face-lookup "red" nil nil t t nil))
 180 ;              (list ""
 181 ;                    (custom-face-lookup "DarkGreen" nil nil t nil nil)
 182 ;                    (custom-face-lookup "DarkGreen" nil nil nil t nil)))))
 183 ;  "Alist of headers and faces used for highlighting them.
 184 ;The entries in the list has the form `(REGEXP NAME CONTENT)', where
 185 ;REGEXP is a regular expression matching the beginning of the header,
 186 ;NAME is the face used for highlighting the header name and CONTENT is
 187 ;the face used for highlighting the header content.
 188
 189 ;The first non-nil NAME or CONTENT with a matching REGEXP in the list
 190 ;will be used.")
 191
 192
 193 ;see gnus-cus.el
 194 ;(defvar gnus-make-foreground t
 195 ;  "Non nil means foreground color to highlight citations.")
 196
 197 ;see gnus-cus.el
 198 ;(defvar gnus-article-button-face 'bold
 199 ;  "Face used for text buttons.")
 200
 201 ;see gnus-cus.el
 202 ;(defvar gnus-article-mouse-face (if (boundp 'gnus-mouse-face)
 203 ;                                   gnus-mouse-face
 204 ;                                 'highlight)
 205 ;  "Face used when the mouse is over the button.")
 206
 207 ;see gnus-cus.el
 208 ;(defvar gnus-signature-face 'italic
 209 ;  "Face used for signature.")
 210
 211 (defvar gnus-button-url-regexp "\\b\\(s?https?\\|ftp\\|file\\|gopher\\|news\\|telnet\\|wais\\|mailto\\):\\(//[-a-zA-Z0-9_.]+:[0-9]*\\)?[-\\wa-zA-Z0-9_=!?#$@~`%&*+|\\/.,]*[-\\wa-zA-Z0-9_=#$@~`%&*+|\\/]"
 212   "*Regular expression that matches URLs.")
 213
 214 (defvar gnus-button-alist
 215   `(("\\bin\\( +article\\)? +\\(<\\([^\n @<>]+@[^\n @<>]+\\)>\\)" 2
 216      t gnus-button-message-id 3)
 217     ("\\(<?\\(url: ?\\)?news:\\([^>\n\t ]*\\)>?\\)" 1 t
 218      gnus-button-message-id 3)
 219     ("\\(<URL: *\\)?mailto: *\\([^> \n\t]+\\)>?" 0 t gnus-button-reply 2)
 220     ;; This is how URLs _should_ be embedded in text...
 221     ("<URL: *\\([^\n\r>]*\\)>" 0 t gnus-button-url 1)
 222     ;; Next regexp stolen from highlight-headers.el.
 223     ;; Modified by Vladimir Alexiev.
 224     (,gnus-button-url-regexp 0 t gnus-button-url 0))
 225   "Alist of regexps matching buttons in article bodies.
 226
 227 Each entry has the form (REGEXP BUTTON FORM CALLBACK PAR...), where
 228 REGEXP: is the string matching text around the button,
 229 BUTTON: is the number of the regexp grouping actually matching the button,
 230 FORM: is a lisp expression which must eval to true for the button to
 231 be added,
 232 CALLBACK: is the function to call when the user push this button, and each
 233 PAR: is a number of a regexp grouping whose text will be passed to CALLBACK.
 234
 235 CALLBACK can also be a variable, in that case the value of that
 236 variable it the real callback function.")
 237
 238 (defvar gnus-header-button-alist
 239   `(("^\\(References\\|Message-I[Dd]\\):" "<[^>]+>"
 240      0 t gnus-button-message-id 0)
 241     ("^\\(From\\|Reply-To\\): " ": *\\(.+\\)$" 1 t gnus-button-reply 0)
 242     ("^\\(Cc\\|To\\):" "[^ \t\n<>,()\"]+@[^ \t\n<>,()\"]+"
 243      0 t gnus-button-mailto 0)
 244     ("^X-[Uu][Rr][Ll]:" ,gnus-button-url-regexp 0 t gnus-button-url 0)
 245     ("^[^:]+:" ,gnus-button-url-regexp 0 t gnus-button-url 0)
 246     ("^[^:]+:" "\\(<\\(url: \\)?news:\\([^>\n ]*\\)>\\)" 1 t
 247      gnus-button-message-id 3))
 248   "Alist of headers and regexps to match buttons in article heads.
 249
 250 This alist is very similar to `gnus-button-alist', except that each
 251 alist has an additional HEADER element first in each entry:
 252
 253 \(HEADER REGEXP BUTTON FORM CALLBACK PAR)
 254
 255 HEADER is a regexp to match a header.  For a fuller explanation, see
 256 `gnus-button-alist'.")
 257
 258 ;see gnus-cus.el
 259 ;(eval-when-compile
 260 ;  (defvar browse-url-browser-function))
 261
 262 ;;; Group mode highlighting.
 263
 264 ;see gnus-cus.el
 265 ;(defvar gnus-group-highlight nil
 266 ;  "Group lines are highlighted with the FACE for the first FORM which
 267 ;evaluate to a non-nil value.
 268 ;
 269 ;Point will be at the beginning of the line when FORM is evaluated.
 270 ;Variables bound when these forms are evaluated include:
 271 ;
 272 ;group: The group name.
 273 ;unread: The number of unread articles.
 274 ;method: The select method.
 275 ;mailp: Whether the select method is a mail method.
 276 ;level: The level of the group.
 277 ;score: The score of the group.
 278 ;ticked: The number of ticked articles in the group.
 279 ;")
 280
 281
 282 ;;; Internal variables.
 283
 284 (defvar gnus-button-marker-list nil)
 285
 286 \f
 287
 288 (eval-and-compile
 289   (autoload 'nnkiboze-generate-groups "nnkiboze")
 290   (autoload 'gnus-cite-parse-maybe "gnus-cite" nil t))
 291
 292 ;;;
 293 ;;; gnus-menu
 294 ;;;
 295
 296 (defun gnus-visual-turn-off-edit-menu (type)
 297   (define-key (symbol-value (intern (format "gnus-%s-mode-map" type)))
 298     [menu-bar edit] 'undefined))
 299
 300 ;; Newsgroup buffer
 301
 302 (defun gnus-group-make-menu-bar ()
 303   (gnus-visual-turn-off-edit-menu 'group)
 304   (or
 305    (boundp 'gnus-group-reading-menu)
 306    (progn
 307      (easy-menu-define
 308       gnus-group-reading-menu gnus-group-mode-map ""
 309       '("Group"
 310         ["Read" gnus-group-read-group (gnus-group-group-name)]
 311         ["Select" gnus-group-select-group (gnus-group-group-name)]
 312         ["See old articles" (gnus-group-select-group 'all)
 313          :keys "C-u SPC" :active (gnus-group-group-name)]
 314         ["Catch up" gnus-group-catchup-current (gnus-group-group-name)]
 315         ["Catch up all articles" gnus-group-catchup-current-all
 316          (gnus-group-group-name)]
 317         ["Check for new articles" gnus-group-get-new-news-this-group
 318          (gnus-group-group-name)]
 319         ["Toggle subscription" gnus-group-unsubscribe-current-group
 320          (gnus-group-group-name)]
 321         ["Kill" gnus-group-kill-group (gnus-group-group-name)]
 322         ["Yank" gnus-group-yank-group gnus-list-of-killed-groups]
 323         ["Describe" gnus-group-describe-group (gnus-group-group-name)]
 324         ["Fetch FAQ" gnus-group-fetch-faq (gnus-group-group-name)]
 325         ["Edit kill file" gnus-group-edit-local-kill
 326          (gnus-group-group-name)]
 327         ;; Actually one should check, if any of the marked groups gives t for
 328         ;; (gnus-check-backend-function 'request-expire-articles ...)
 329         ["Expire articles" gnus-group-expire-articles
 330          (or (and (gnus-group-group-name)
 331                   (gnus-check-backend-function
 332                    'request-expire-articles
 333                    (gnus-group-group-name))) gnus-group-marked)]
 334         ["Set group level" gnus-group-set-current-level
 335          (gnus-group-group-name)]
 336         ["Select quick" gnus-group-quick-select-group (gnus-group-group-name)]
 337         ))
 338
 339      (easy-menu-define
 340       gnus-group-group-menu gnus-group-mode-map ""
 341       '("Groups"
 342         ("Listing"
 343          ["List unread subscribed groups" gnus-group-list-groups t]
 344          ["List (un)subscribed groups" gnus-group-list-all-groups t]
 345          ["List killed groups" gnus-group-list-killed gnus-killed-list]
 346          ["List zombie groups" gnus-group-list-zombies gnus-zombie-list]
 347          ["List level..." gnus-group-list-level t]
 348          ["Describe all groups" gnus-group-describe-all-groups t]
 349          ["Group apropos..." gnus-group-apropos t]
 350          ["Group and description apropos..." gnus-group-description-apropos t]
 351          ["List groups matching..." gnus-group-list-matching t]
 352          ["List all groups matching..." gnus-group-list-all-matching t]
 353          ["List active file" gnus-group-list-active t])
 354         ("Sort"
 355          ["Default sort" gnus-group-sort-groups
 356           (or (not (boundp 'gnus-topic-mode)) (not gnus-topic-mode))]
 357          ["Sort by method" gnus-group-sort-groups-by-method
 358           (or (not (boundp 'gnus-topic-mode)) (not gnus-topic-mode))]
 359          ["Sort by rank" gnus-group-sort-groups-by-rank
 360           (or (not (boundp 'gnus-topic-mode)) (not gnus-topic-mode))]
 361          ["Sort by score" gnus-group-sort-groups-by-score
 362           (or (not (boundp 'gnus-topic-mode)) (not gnus-topic-mode))]
 363          ["Sort by level" gnus-group-sort-groups-by-level
 364           (or (not (boundp 'gnus-topic-mode)) (not gnus-topic-mode))]
 365          ["Sort by unread" gnus-group-sort-groups-by-unread
 366           (or (not (boundp 'gnus-topic-mode)) (not gnus-topic-mode))]
 367          ["Sort by name" gnus-group-sort-groups-by-alphabet
 368           (or (not (boundp 'gnus-topic-mode)) (not gnus-topic-mode))])
 369         ("Mark"
 370          ["Mark group" gnus-group-mark-group
 371           (and (gnus-group-group-name)
 372                (not (memq (gnus-group-group-name) gnus-group-marked)))]
 373          ["Unmark group" gnus-group-unmark-group
 374           (and (gnus-group-group-name)
 375                (memq (gnus-group-group-name) gnus-group-marked))]
 376          ["Unmark all" gnus-group-unmark-all-groups gnus-group-marked]
 377          ["Mark regexp..." gnus-group-mark-regexp t]
 378          ["Mark region" gnus-group-mark-region t]
 379          ["Mark buffer" gnus-group-mark-buffer t]
 380          ["Execute command" gnus-group-universal-argument
 381           (or gnus-group-marked (gnus-group-group-name))])
 382         ("Subscribe"
 383          ["Subscribe to random group" gnus-group-unsubscribe-group t]
 384          ["Kill all newsgroups in region" gnus-group-kill-region t]
 385          ["Kill all zombie groups" gnus-group-kill-all-zombies
 386           gnus-zombie-list]
 387          ["Kill all groups on level..." gnus-group-kill-level t])
 388         ("Foreign groups"
 389          ["Make a foreign group" gnus-group-make-group t]
 390          ["Add a directory group" gnus-group-make-directory-group t]
 391          ["Add the help group" gnus-group-make-help-group t]
 392          ["Add the archive group" gnus-group-make-archive-group t]
 393          ["Make a doc group" gnus-group-make-doc-group t]
 394          ["Make a kiboze group" gnus-group-make-kiboze-group t]
 395          ["Make a virtual group" gnus-group-make-empty-virtual t]
 396          ["Add a group to a virtual" gnus-group-add-to-virtual t]
 397          ["Rename group" gnus-group-rename-group
 398           (gnus-check-backend-function
 399            'request-rename-group (gnus-group-group-name))]
 400          ["Delete group" gnus-group-delete-group
 401           (gnus-check-backend-function
 402            'request-delete-group (gnus-group-group-name))])
 403         ("Editing groups"
 404          ["Parameters" gnus-group-edit-group-parameters
 405           (gnus-group-group-name)]
 406          ["Select method" gnus-group-edit-group-method
 407           (gnus-group-group-name)]
 408          ["Info" gnus-group-edit-group (gnus-group-group-name)])
 409         ("Score file"
 410          ["Flush cache" gnus-score-flush-cache
 411           (or gnus-score-cache gnus-short-name-score-file-cache)])
 412         ("Move"
 413          ["Next" gnus-group-next-group t]
 414          ["Previous" gnus-group-prev-group t]
 415          ["Next unread" gnus-group-next-unread-group t]
 416          ["Previous unread" gnus-group-prev-unread-group t]
 417          ["Next unread same level" gnus-group-next-unread-group-same-level t]
 418          ["Previous unread same level"
 419           gnus-group-previous-unread-group-same-level t]
 420          ["Jump to group" gnus-group-jump-to-group t]
 421          ["First unread group" gnus-group-first-unread-group t]
 422          ["Best unread group" gnus-group-best-unread-group t])
 423         ["Transpose" gnus-group-transpose-groups
 424          (gnus-group-group-name)]
 425         ["Read a directory as a group..." gnus-group-enter-directory t]
 426         ))
 427
 428      (easy-menu-define
 429       gnus-group-misc-menu gnus-group-mode-map ""
 430       '("Misc"
 431         ["Send a bug report" gnus-bug t]
 432         ["Send a mail" gnus-group-mail t]
 433         ["Post an article..." gnus-group-post-news t]
 434         ["Customize score file" gnus-score-customize t]
 435         ["Check for new news" gnus-group-get-new-news t]
 436         ["Activate all groups" gnus-activate-all-groups t]
 437         ["Delete bogus groups" gnus-group-check-bogus-groups t]
 438         ["Find new newsgroups" gnus-find-new-newsgroups t]
 439         ["Restart Gnus" gnus-group-restart t]
 440         ["Read init file" gnus-group-read-init-file t]
 441         ["Browse foreign server" gnus-group-browse-foreign-server t]
 442         ["Enter server buffer" gnus-group-enter-server-mode t]
 443         ["Expire all expirable articles" gnus-group-expire-all-groups t]
 444         ["Generate any kiboze groups" nnkiboze-generate-groups t]
 445         ["Gnus version" gnus-version t]
 446         ["Save .newsrc files" gnus-group-save-newsrc t]
 447         ["Suspend Gnus" gnus-group-suspend t]
 448         ["Clear dribble buffer" gnus-group-clear-dribble t]
 449         ["Exit from Gnus" gnus-group-exit t]
 450         ["Exit without saving" gnus-group-quit t]
 451         ["Edit global kill file" gnus-group-edit-global-kill t]
 452         ["Read manual" gnus-info-find-node t]
 453         ["Toggle topics" gnus-topic-mode t]
 454         ("SOUP"
 455          ["Pack replies" nnsoup-pack-replies (fboundp 'nnsoup-request-group)]
 456          ["Send replies" gnus-soup-send-replies
 457           (fboundp 'gnus-soup-pack-packet)]
 458          ["Pack packet" gnus-soup-pack-packet (fboundp 'gnus-soup-pack-packet)]
 459          ["Save areas" gnus-soup-save-areas (fboundp 'gnus-soup-pack-packet)]
 460          ["Brew SOUP" gnus-soup-brew-soup (fboundp 'gnus-soup-pack-packet)])
 461         ))
 462      (run-hooks 'gnus-group-menu-hook)
 463      )))
 464
 465 ;; Summary buffer
 466 (defun gnus-summary-make-menu-bar ()
 467   (gnus-visual-turn-off-edit-menu 'summary)
 468
 469   (unless (boundp 'gnus-summary-misc-menu)
 470
 471     (easy-menu-define
 472      gnus-summary-misc-menu gnus-summary-mode-map ""
 473      '("Misc"
 474        ("Mark"
 475         ("Read"
 476          ["Mark as read" gnus-summary-mark-as-read-forward t]
 477          ["Mark same subject and select"
 478           gnus-summary-kill-same-subject-and-select t]
 479          ["Mark same subject" gnus-summary-kill-same-subject t]
 480          ["Catchup" gnus-summary-catchup t]
 481          ["Catchup all" gnus-summary-catchup-all t]
 482          ["Catchup to here" gnus-summary-catchup-to-here t]
 483          ["Catchup region" gnus-summary-mark-region-as-read t]
 484          ["Mark excluded" gnus-summary-limit-mark-excluded-as-read t])
 485         ("Various"
 486          ["Tick" gnus-summary-tick-article-forward t]
 487          ["Mark as dormant" gnus-summary-mark-as-dormant t]
 488          ["Remove marks" gnus-summary-clear-mark-forward t]
 489          ["Set expirable mark" gnus-summary-mark-as-expirable t]
 490          ["Set bookmark" gnus-summary-set-bookmark t]
 491          ["Remove bookmark" gnus-summary-remove-bookmark t])
 492         ("Limit"
 493          ["Marks..." gnus-summary-limit-to-marks t]
 494          ["Subject..." gnus-summary-limit-to-subject t]
 495          ["Author..." gnus-summary-limit-to-author t]
 496          ["Score" gnus-summary-limit-to-score t]
 497          ["Unread" gnus-summary-limit-to-unread t]
 498          ["Non-dormant" gnus-summary-limit-exclude-dormant t]
 499          ["Articles" gnus-summary-limit-to-articles t]
 500          ["Pop limit" gnus-summary-pop-limit t]
 501          ["Show dormant" gnus-summary-limit-include-dormant t]
 502          ["Hide childless dormant"
 503           gnus-summary-limit-exclude-childless-dormant t]
 504          ;;["Hide thread" gnus-summary-limit-exclude-thread t]
 505          ["Show expunged" gnus-summary-show-all-expunged t])
 506         ("Process mark"
 507          ["Set mark" gnus-summary-mark-as-processable t]
 508          ["Remove mark" gnus-summary-unmark-as-processable t]
 509          ["Remove all marks" gnus-summary-unmark-all-processable t]
 510          ["Mark above" gnus-uu-mark-over t]
 511          ["Mark series" gnus-uu-mark-series t]
 512          ["Mark region" gnus-uu-mark-region t]
 513          ["Mark by regexp..." gnus-uu-mark-by-regexp t]
 514          ["Mark all" gnus-uu-mark-all t]
 515          ["Mark buffer" gnus-uu-mark-buffer t]
 516          ["Mark sparse" gnus-uu-mark-sparse t]
 517          ["Mark thread" gnus-uu-mark-thread t]
 518          ["Unmark thread" gnus-uu-unmark-thread t]))
 519        ("Scroll article"
 520         ["Page forward" gnus-summary-next-page t]
 521         ["Page backward" gnus-summary-prev-page t]
 522         ["Line forward" gnus-summary-scroll-up t])
 523        ("Move"
 524         ["Next unread article" gnus-summary-next-unread-article t]
 525         ["Previous unread article" gnus-summary-prev-unread-article t]
 526         ["Next article" gnus-summary-next-article t]
 527         ["Previous article" gnus-summary-prev-article t]
 528         ["Next unread subject" gnus-summary-next-unread-subject t]
 529         ["Previous unread subject" gnus-summary-prev-unread-subject t]
 530         ["Next article same subject" gnus-summary-next-same-subject t]
 531         ["Previous article same subject" gnus-summary-prev-same-subject t]
 532         ["First unread article" gnus-summary-first-unread-article t]
 533         ["Best unread article" gnus-summary-best-unread-article t]
 534         ["Go to subject number..." gnus-summary-goto-subject t]
 535         ["Go to article number..." gnus-summary-goto-article t]
 536         ["Go to the last article" gnus-summary-goto-last-article t]
 537         ["Pop article off history" gnus-summary-pop-article t])
 538        ("Sort"
 539         ["Sort by number" gnus-summary-sort-by-number t]
 540         ["Sort by author" gnus-summary-sort-by-author t]
 541         ["Sort by subject" gnus-summary-sort-by-subject t]
 542         ["Sort by date" gnus-summary-sort-by-date t]
 543         ["Sort by score" gnus-summary-sort-by-score t])
 544        ("Exit"
 545         ["Catchup and exit" gnus-summary-catchup-and-exit t]
 546         ["Catchup all and exit" gnus-summary-catchup-and-exit t]
 547         ["Catchup and goto next" gnus-summary-catchup-and-goto-next-group t]
 548         ["Exit group" gnus-summary-exit t]
 549         ["Exit group without updating" gnus-summary-exit-no-update t]
 550         ["Exit and goto next group" gnus-summary-next-group t]
 551         ["Exit and goto prev group" gnus-summary-prev-group t]
 552         ["Reselect group" gnus-summary-reselect-current-group t]
 553         ["Rescan group" gnus-summary-rescan-group t])
 554        ("Help"
 555         ["Fetch group FAQ" gnus-summary-fetch-faq t]
 556         ["Describe group" gnus-summary-describe-group t]
 557         ["Read manual" gnus-info-find-node t])
 558        ("Cache"
 559         ["Enter article" gnus-cache-enter-article t]
 560         ["Remove article" gnus-cache-remove-article t])
 561        ("Modes"
 562         ["Pick and read" gnus-pick-mode t]
 563         ["Binary" gnus-binary-mode t])
 564        ["Filter articles..." gnus-summary-execute-command t]
 565        ["Run command on subjects..." gnus-summary-universal-argument t]
 566        ["Toggle line truncation" gnus-summary-toggle-truncation t]
 567        ["Expand window" gnus-summary-expand-window t]
 568        ["Expire expirable articles" gnus-summary-expire-articles
 569         (gnus-check-backend-function
 570          'request-expire-articles gnus-newsgroup-name)]
 571        ["Edit local kill file" gnus-summary-edit-local-kill t]
 572        ["Edit main kill file" gnus-summary-edit-global-kill t]
 573        ))
 574
 575     (easy-menu-define
 576      gnus-summary-kill-menu gnus-summary-mode-map ""
 577      (cons
 578       "Score"
 579       (nconc
 580        (list
 581         ["Enter score..." gnus-summary-score-entry t])
 582        (gnus-visual-score-map 'increase)
 583        (gnus-visual-score-map 'lower)
 584        '(("Mark"
 585           ["Kill below" gnus-summary-kill-below t]
 586           ["Mark above" gnus-summary-mark-above t]
 587           ["Tick above" gnus-summary-tick-above t]
 588           ["Clear above" gnus-summary-clear-above t])
 589          ["Current score" gnus-summary-current-score t]
 590          ["Set score" gnus-summary-set-score t]
 591          ["Customize score file" gnus-score-customize t]
 592          ["Switch current score file..." gnus-score-change-score-file t]
 593          ["Set mark below..." gnus-score-set-mark-below t]
 594          ["Set expunge below..." gnus-score-set-expunge-below t]
 595          ["Edit current score file" gnus-score-edit-current-scores t]
 596          ["Edit score file" gnus-score-edit-file t]
 597          ["Trace score" gnus-score-find-trace t]
 598          ["Rescore buffer" gnus-summary-rescore t]
 599          ["Increase score..." gnus-summary-increase-score t]
 600          ["Lower score..." gnus-summary-lower-score t]))))
 601
 602     '(("Default header"
 603        ["Ask" (gnus-score-set-default 'gnus-score-default-header nil)
 604         :style radio
 605         :selected (null gnus-score-default-header)]
 606        ["From" (gnus-score-set-default 'gnus-score-default-header 'a)
 607         :style radio
 608         :selected (eq gnus-score-default-header 'a)]
 609        ["Subject" (gnus-score-set-default 'gnus-score-default-header 's)
 610         :style radio
 611         :selected (eq gnus-score-default-header 's)]
 612        ["Article body"
 613         (gnus-score-set-default 'gnus-score-default-header 'b)
 614         :style radio
 615         :selected (eq gnus-score-default-header 'b )]
 616        ["All headers"
 617         (gnus-score-set-default 'gnus-score-default-header 'h)
 618         :style radio
 619         :selected (eq gnus-score-default-header 'h )]
 620        ["Message-Id" (gnus-score-set-default 'gnus-score-default-header 'i)
 621         :style radio
 622         :selected (eq gnus-score-default-header 'i )]
 623        ["Thread" (gnus-score-set-default 'gnus-score-default-header 't)
 624         :style radio
 625         :selected (eq gnus-score-default-header 't )]
 626        ["Crossposting"
 627         (gnus-score-set-default 'gnus-score-default-header 'x)
 628         :style radio
 629         :selected (eq gnus-score-default-header 'x )]
 630        ["Lines" (gnus-score-set-default 'gnus-score-default-header 'l)
 631         :style radio
 632         :selected (eq gnus-score-default-header 'l )]
 633        ["Date" (gnus-score-set-default 'gnus-score-default-header 'd)
 634         :style radio
 635         :selected (eq gnus-score-default-header 'd )]
 636        ["Followups to author"
 637         (gnus-score-set-default 'gnus-score-default-header 'f)
 638         :style radio
 639         :selected (eq gnus-score-default-header 'f )])
 640       ("Default type"
 641        ["Ask" (gnus-score-set-default 'gnus-score-default-type nil)
 642         :style radio
 643         :selected (null gnus-score-default-type)]
 644        ;; The `:active' key is commented out in the following,
 645        ;; because the GNU Emacs hack to support radio buttons use
 646        ;; active to indicate which button is selected.
 647        ["Substring" (gnus-score-set-default 'gnus-score-default-type 's)
 648         :style radio
 649         ;; :active (not (memq gnus-score-default-header '(l d)))
 650         :selected (eq gnus-score-default-type 's)]
 651        ["Regexp" (gnus-score-set-default 'gnus-score-default-type 'r)
 652         :style radio
 653         ;; :active (not (memq gnus-score-default-header '(l d)))
 654         :selected (eq gnus-score-default-type 'r)]
 655        ["Exact" (gnus-score-set-default 'gnus-score-default-type 'e)
 656         :style radio
 657         ;; :active (not (memq gnus-score-default-header '(l d)))
 658         :selected (eq gnus-score-default-type 'e)]
 659        ["Fuzzy" (gnus-score-set-default 'gnus-score-default-type 'f)
 660         :style radio
 661         ;; :active (not (memq gnus-score-default-header '(l d)))
 662         :selected (eq gnus-score-default-type 'f)]
 663        ["Before date" (gnus-score-set-default 'gnus-score-default-type 'b)
 664         :style radio
 665         ;; :active (eq (gnus-score-default-header 'd))
 666         :selected (eq gnus-score-default-type 'b)]
 667        ["At date" (gnus-score-set-default 'gnus-score-default-type 'n)
 668         :style radio
 669         ;; :active (eq (gnus-score-default-header 'd))
 670         :selected (eq gnus-score-default-type 'n)]
 671        ["After date" (gnus-score-set-default 'gnus-score-default-type 'a)
 672         :style radio
 673         ;; :active (eq (gnus-score-default-header 'd))
 674         :selected (eq gnus-score-default-type 'a)]
 675        ["Less than number"
 676         (gnus-score-set-default 'gnus-score-default-type '<)
 677         :style radio
 678         ;; :active (eq (gnus-score-default-header 'l))
 679         :selected (eq gnus-score-default-type '<)]
 680        ["Equal to number"
 681         (gnus-score-set-default 'gnus-score-default-type '=)
 682         :style radio
 683         ;; :active (eq (gnus-score-default-header 'l))
 684         :selected (eq gnus-score-default-type '=)]
 685        ["Greater than number"
 686         (gnus-score-set-default 'gnus-score-default-type '>)
 687         :style radio
 688         ;; :active (eq (gnus-score-default-header 'l))
 689         :selected (eq gnus-score-default-type '>)])
 690       ["Default fold" gnus-score-default-fold-toggle
 691        :style toggle
 692        :selected gnus-score-default-fold]
 693       ("Default duration"
 694        ["Ask" (gnus-score-set-default 'gnus-score-default-duration nil)
 695         :style radio
 696         :selected (null gnus-score-default-duration)]
 697        ["Permanent"
 698         (gnus-score-set-default 'gnus-score-default-duration 'p)
 699         :style radio
 700         :selected (eq gnus-score-default-duration 'p)]
 701        ["Temporary"
 702         (gnus-score-set-default 'gnus-score-default-duration 't)
 703         :style radio
 704         :selected (eq gnus-score-default-duration 't)]
 705        ["Immediate"
 706         (gnus-score-set-default 'gnus-score-default-duration 'i)
 707         :style radio
 708         :selected (eq gnus-score-default-duration 'i)]))
 709
 710     (easy-menu-define
 711      gnus-summary-article-menu gnus-summary-mode-map ""
 712      '("Article"
 713        ("Hide"
 714         ["All" gnus-article-hide t]
 715         ["Headers" gnus-article-hide-headers t]
 716         ["Signature" gnus-article-hide-signature t]
 717         ["Citation" gnus-article-hide-citation t]
 718         ["PGP" gnus-article-hide-pgp t]
 719         ["Boring headers" gnus-article-hide-boring-headers t])
 720        ("Highlight"
 721         ["All" gnus-article-highlight t]
 722         ["Headers" gnus-article-highlight-headers t]
 723         ["Signature" gnus-article-highlight-signature t]
 724         ["Citation" gnus-article-highlight-citation t])
 725        ("Date"
 726         ["Local" gnus-article-date-local t]
 727         ["UT" gnus-article-date-ut t]
 728         ["Original" gnus-article-date-original t]
 729         ["Lapsed" gnus-article-date-lapsed t])
 730        ("Filter"
 731         ["Overstrike" gnus-article-treat-overstrike t]
 732         ["Word wrap" gnus-article-fill-cited-article t]
 733         ["CR" gnus-article-remove-cr t]
 734         ["Trailing blank lines" gnus-article-remove-trailing-blank-lines t]
 735         ["Show X-Face" gnus-article-display-x-face t]
 736         ["Quoted-Printable" gnus-article-de-quoted-unreadable t]
 737         ["Rot 13" gnus-summary-caesar-message t]
 738         ["Add buttons" gnus-article-add-buttons t]
 739         ["Add buttons to head" gnus-article-add-buttons-to-head t]
 740         ["Stop page breaking" gnus-summary-stop-page-breaking t]
 741         ["Toggle MIME" gnus-summary-toggle-mime t]
 742         ["Verbose header" gnus-summary-verbose-headers t]
 743         ["Toggle header" gnus-summary-toggle-header t])
 744        ("Output"
 745         ["Save in default format" gnus-summary-save-article t]
 746         ["Save in file" gnus-summary-save-article-file t]
 747         ["Save in Unix mail format" gnus-summary-save-article-mail t]
 748         ["Save in MH folder" gnus-summary-save-article-folder t]
 749         ["Save in VM folder" gnus-summary-save-article-vm t]
 750         ["Save in RMAIL mbox" gnus-summary-save-article-rmail t]
 751         ["Save body in file" gnus-summary-save-article-body-file t]
 752         ["Pipe through a filter" gnus-summary-pipe-output t]
 753         ["Add to SOUP packet" gnus-soup-add-article t])
 754        ("Backend"
 755         ["Respool article..." gnus-summary-respool-article t]
 756         ["Move article..." gnus-summary-move-article
 757          (gnus-check-backend-function
 758           'request-move-article gnus-newsgroup-name)]
 759         ["Copy article..." gnus-summary-copy-article t]
 760         ["Crosspost article..." gnus-summary-crosspost-article
 761          (gnus-check-backend-function
 762           'request-replace-article gnus-newsgroup-name)]
 763         ["Import file..." gnus-summary-import-article t]
 764         ["Edit article" gnus-summary-edit-article
 765          (not (gnus-group-read-only-p))]
 766         ["Delete article" gnus-summary-delete-article
 767          (gnus-check-backend-function
 768           'request-expire-articles gnus-newsgroup-name)]
 769         ["Query respool" gnus-summary-respool-query t]
 770         ["Delete expirable articles" gnus-summary-expire-articles-now
 771          (gnus-check-backend-function
 772           'request-expire-articles gnus-newsgroup-name)])
 773        ("Extract"
 774         ["Uudecode" gnus-uu-decode-uu t]
 775         ["Uudecode and save" gnus-uu-decode-uu-and-save t]
 776         ["Unshar" gnus-uu-decode-unshar t]
 777         ["Unshar and save" gnus-uu-decode-unshar-and-save t]
 778         ["Save" gnus-uu-decode-save t]
 779         ["Binhex" gnus-uu-decode-binhex t]
 780         ["Postscript" gnus-uu-decode-postscript t])
 781        ["Enter digest buffer" gnus-summary-enter-digest-group t]
 782        ["Isearch article..." gnus-summary-isearch-article t]
 783        ["Search articles forward..." gnus-summary-search-article-forward t]
 784        ["Search articles backward..." gnus-summary-search-article-backward t]
 785        ["Beginning of the article" gnus-summary-beginning-of-article t]
 786        ["End of the article" gnus-summary-end-of-article t]
 787        ["Fetch parent of article" gnus-summary-refer-parent-article t]
 788        ["Fetch referenced articles" gnus-summary-refer-references t]
 789        ["Fetch article with id..." gnus-summary-refer-article t]
 790        ["Redisplay" gnus-summary-show-article t]))
 791
 792     (easy-menu-define
 793      gnus-summary-thread-menu gnus-summary-mode-map ""
 794      '("Threads"
 795        ["Toggle threading" gnus-summary-toggle-threads t]
 796        ["Hide threads" gnus-summary-hide-all-threads t]
 797        ["Show threads" gnus-summary-show-all-threads t]
 798        ["Hide thread" gnus-summary-hide-thread t]
 799        ["Show thread" gnus-summary-show-thread t]
 800        ["Go to next thread" gnus-summary-next-thread t]
 801        ["Go to previous thread" gnus-summary-prev-thread t]
 802        ["Go down thread" gnus-summary-down-thread t]
 803        ["Go up thread" gnus-summary-up-thread t]
 804        ["Top of thread" gnus-summary-top-thread t]
 805        ["Mark thread as read" gnus-summary-kill-thread t]
 806        ["Lower thread score" gnus-summary-lower-thread t]
 807        ["Raise thread score" gnus-summary-raise-thread t]
 808        ["Rethread current" gnus-summary-rethread-current t]
 809        ))
 810
 811     (easy-menu-define
 812      gnus-summary-post-menu gnus-summary-mode-map ""
 813      '("Post"
 814        ["Post an article" gnus-summary-post-news t]
 815        ["Followup" gnus-summary-followup t]
 816        ["Followup and yank" gnus-summary-followup-with-original t]
 817        ["Supersede article" gnus-summary-supersede-article t]
 818        ["Cancel article" gnus-summary-cancel-article t]
 819        ["Reply" gnus-summary-reply t]
 820        ["Reply and yank" gnus-summary-reply-with-original t]
 821        ["Mail forward" gnus-summary-mail-forward t]
 822        ["Post forward" gnus-summary-post-forward t]
 823        ["Digest and mail" gnus-uu-digest-mail-forward t]
 824        ["Digest and post" gnus-uu-digest-post-forward t]
 825        ["Resend message" gnus-summary-resend-message t]
 826        ["Send bounced mail" gnus-summary-resend-bounced-mail t]
 827        ["Send a mail" gnus-summary-mail-other-window t]
 828        ["Uuencode and post" gnus-uu-post-news t]
 829        ;;("Draft"
 830        ;;["Send" gnus-summary-send-draft t]
 831        ;;["Send bounced" gnus-resend-bounced-mail t])
 832        ))
 833     (run-hooks 'gnus-summary-menu-hook)
 834     ))
 835
 836 (defun gnus-score-set-default (var value)
 837   "A version of set that updates the GNU Emacs menu-bar."
 838   (set var value)
 839   ;; It is the message that forces the active status to be updated.
 840   (message ""))
 841
 842 (defun gnus-visual-score-map (type)
 843   (if t
 844       nil
 845     (let ((headers '(("author" "from" string)
 846                      ("subject" "subject" string)
 847                      ("article body" "body" string)
 848                      ("article head" "head" string)
 849                      ("xref" "xref" string)
 850                      ("lines" "lines" number)
 851                      ("followups to author" "followup" string)))
 852           (types '((number ("less than" <)
 853                            ("greater than" >)
 854                            ("equal" =))
 855                    (string ("substring" s)
 856                            ("exact string" e)
 857                            ("fuzzy string" f)
 858                            ("regexp" r))))
 859           (perms '(("temporary" (current-time-string))
 860                    ("permanent" nil)
 861                    ("immediate" now)))
 862           header)
 863       (list
 864        (apply
 865         'nconc
 866         (list
 867          (if (eq type 'lower)
 868              "Lower score"
 869            "Increase score"))
 870         (let (outh)
 871           (while headers
 872             (setq header (car headers))
 873             (setq outh
 874                   (cons
 875                    (apply
 876                     'nconc
 877                     (list (car header))
 878                     (let ((ts (cdr (assoc (nth 2 header) types)))
 879                           outt)
 880                       (while ts
 881                         (setq outt
 882                               (cons
 883                                (apply
 884                                 'nconc
 885                                 (list (caar ts))
 886                                 (let ((ps perms)
 887                                       outp)
 888                                   (while ps
 889                                     (setq outp
 890                                           (cons
 891                                            (vector
 892                                             (caar ps)
 893                                             (list
 894                                              'gnus-summary-score-entry
 895                                              (nth 1 header)
 896                                              (if (or (string= (nth 1 header)
 897                                                               "head")
 898                                                      (string= (nth 1 header)
 899                                                               "body"))
 900                                                  ""
 901                                                (list 'gnus-summary-header
 902                                                      (nth 1 header)))
 903                                              (list 'quote (nth 1 (car ts)))
 904                                              (list 'gnus-score-default nil)
 905                                              (nth 1 (car ps))
 906                                              t)
 907                                             t)
 908                                            outp))
 909                                     (setq ps (cdr ps)))
 910                                   (list (nreverse outp))))
 911                                outt))
 912                         (setq ts (cdr ts)))
 913                       (list (nreverse outt))))
 914                    outh))
 915             (setq headers (cdr headers)))
 916           (list (nreverse outh))))))))
 917
 918 ;; Article buffer
 919 (defun gnus-article-make-menu-bar ()
 920   (gnus-visual-turn-off-edit-menu 'summary)
 921   (or
 922    (boundp 'gnus-article-article-menu)
 923    (progn
 924      (easy-menu-define
 925       gnus-article-article-menu gnus-article-mode-map ""
 926       '("Article"
 927         ["Scroll forwards" gnus-article-goto-next-page t]
 928         ["Scroll backwards" gnus-article-goto-prev-page t]
 929         ["Show summary" gnus-article-show-summary t]
 930         ["Fetch Message-ID at point" gnus-article-refer-article t]
 931         ["Mail to address at point" gnus-article-mail t]
 932         ))
 933
 934      (easy-menu-define
 935       gnus-article-treatment-menu gnus-article-mode-map ""
 936       '("Treatment"
 937         ["Hide headers" gnus-article-hide-headers t]
 938         ["Hide signature" gnus-article-hide-signature t]
 939         ["Hide citation" gnus-article-hide-citation t]
 940         ["Treat overstrike" gnus-article-treat-overstrike t]
 941         ["Remove carriage return" gnus-article-remove-cr t]
 942         ["Remove quoted-unreadable" gnus-article-de-quoted-unreadable t]
 943         ))
 944      (run-hooks 'gnus-article-menu-hook))))
 945
 946 ;;;
 947 ;;; summary highlights
 948 ;;;
 949
 950 (defun gnus-highlight-selected-summary ()
 951   ;; Added by Per Abrahamsen <amanda@iesd.auc.dk>.
 952   ;; Highlight selected article in summary buffer
 953   (if gnus-summary-selected-face
 954       (save-excursion
 955         (let* ((beg (progn (beginning-of-line) (point)))
 956                (end (progn (end-of-line) (point)))
 957                ;; Fix by Mike Dugan <dugan@bucrf16.bu.edu>.
 958                (from (if (get-text-property beg gnus-mouse-face-prop)
 959                          beg
 960                        (1+ (or (next-single-property-change
 961                                 beg gnus-mouse-face-prop nil end)
 962                                beg))))
 963                (to (1- (or (next-single-property-change
 964                             from gnus-mouse-face-prop nil end)
 965                            end))))
 966           ;; If no mouse-face prop on line (e.g. xemacs) we
 967           ;; will have to = from = end, so we highlight the
 968           ;; entire line instead.
 969           (if (= (+ to 2) from)
 970               (progn
 971                 (setq from beg)
 972                 (setq to end)))
 973           (if gnus-newsgroup-selected-overlay
 974               (gnus-move-overlay gnus-newsgroup-selected-overlay
 975                                  from to (current-buffer))
 976             (setq gnus-newsgroup-selected-overlay (gnus-make-overlay from to))
 977             (gnus-overlay-put gnus-newsgroup-selected-overlay 'face
 978                               gnus-summary-selected-face))))))
 979
 980 ;; New implementation by Christian Limpach <Christian.Limpach@nice.ch>.
 981 (defun gnus-summary-highlight-line ()
 982   "Highlight current line according to `gnus-summary-highlight'."
 983   (let* ((list gnus-summary-highlight)
 984          (p (point))
 985          (end (progn (end-of-line) (point)))
 986          ;; now find out where the line starts and leave point there.
 987          (beg (progn (beginning-of-line) (point)))
 988          (article (gnus-summary-article-number))
 989          (score (or (cdr (assq (or article gnus-current-article)
 990                                gnus-newsgroup-scored))
 991                     gnus-summary-default-score 0))
 992          (mark (or (gnus-summary-article-mark) gnus-unread-mark))
 993          (inhibit-read-only t))
 994     ;; Eval the cars of the lists until we find a match.
 995     (let ((default gnus-summary-default-score))
 996       (while (and list
 997                   (not (eval (caar list))))
 998         (setq list (cdr list))))
 999     (let ((face (cdar list)))
1000       (unless (eq face (get-text-property beg 'face))
1001         (gnus-put-text-property
1002          beg end 'face
1003          (setq face (if (boundp face) (symbol-value face) face)))
1004         (when gnus-summary-highlight-line-function
1005           (funcall gnus-summary-highlight-line-function article face))))
1006     (goto-char p)))
1007
1008 (defun gnus-group-highlight-line ()
1009   "Highlight the current line according to `gnus-group-highlight'."
1010   (let* ((list gnus-group-highlight)
1011          (p (point))
1012          (end (progn (end-of-line) (point)))
1013          ;; now find out where the line starts and leave point there.
1014          (beg (progn (beginning-of-line) (point)))
1015          (group (gnus-group-group-name))
1016          (entry (gnus-group-entry group))
1017          (unread (if (numberp (car entry)) (car entry) 0))
1018          (info (nth 2 entry))
1019          (method (gnus-server-get-method group (gnus-info-method info)))
1020          (marked (gnus-info-marks info))
1021          (mailp (memq 'mail (assoc (symbol-name
1022                                     (car (or method gnus-select-method)))
1023                                    gnus-valid-select-methods)))
1024          (level (or (gnus-info-level info) 9))
1025          (score (or (gnus-info-score info) 0))
1026          (ticked (gnus-range-length (cdr (assq 'tick marked))))
1027          (inhibit-read-only t))
1028     ;; Eval the cars of the lists until we find a match.
1029     (while (and list
1030                 (not (eval (caar list))))
1031       (setq list (cdr list)))
1032     (let ((face (cdar list)))
1033       (unless (eq face (get-text-property beg 'face))
1034         (gnus-put-text-property
1035          beg end 'face
1036          (setq face (if (boundp face) (symbol-value face) face)))
1037         (gnus-extent-start-open beg)))
1038     (goto-char p)))
1039
1040 ;;;
1041 ;;; gnus-carpal
1042 ;;;
1043
1044 (defvar gnus-carpal-group-buffer-buttons
1045   '(("next" . gnus-group-next-unread-group)
1046     ("prev" . gnus-group-prev-unread-group)
1047     ("read" . gnus-group-read-group)
1048     ("select" . gnus-group-select-group)
1049     ("catch-up" . gnus-group-catchup-current)
1050     ("new-news" . gnus-group-get-new-news-this-group)
1051     ("toggle-sub" . gnus-group-unsubscribe-current-group)
1052     ("subscribe" . gnus-group-unsubscribe-group)
1053     ("kill" . gnus-group-kill-group)
1054     ("yank" . gnus-group-yank-group)
1055     ("describe" . gnus-group-describe-group)
1056     "list"
1057     ("subscribed" . gnus-group-list-groups)
1058     ("all" . gnus-group-list-all-groups)
1059     ("killed" . gnus-group-list-killed)
1060     ("zombies" . gnus-group-list-zombies)
1061     ("matching" . gnus-group-list-matching)
1062     ("post" . gnus-group-post-news)
1063     ("mail" . gnus-group-mail)
1064     ("rescan" . gnus-group-get-new-news)
1065     ("browse-foreign" . gnus-group-browse-foreign)
1066     ("exit" . gnus-group-exit)))
1067
1068 (defvar gnus-carpal-summary-buffer-buttons
1069   '("mark"
1070     ("read" . gnus-summary-mark-as-read-forward)
1071     ("tick" . gnus-summary-tick-article-forward)
1072     ("clear" . gnus-summary-clear-mark-forward)
1073     ("expirable" . gnus-summary-mark-as-expirable)
1074     "move"
1075     ("scroll" . gnus-summary-next-page)
1076     ("next-unread" . gnus-summary-next-unread-article)
1077     ("prev-unread" . gnus-summary-prev-unread-article)
1078     ("first" . gnus-summary-first-unread-article)
1079     ("best" . gnus-summary-best-unread-article)
1080     "article"
1081     ("headers" . gnus-summary-toggle-header)
1082     ("uudecode" . gnus-uu-decode-uu)
1083     ("enter-digest" . gnus-summary-enter-digest-group)
1084     ("fetch-parent" . gnus-summary-refer-parent-article)
1085     "mail"
1086     ("move" . gnus-summary-move-article)
1087     ("copy" . gnus-summary-copy-article)
1088     ("respool" . gnus-summary-respool-article)
1089     "threads"
1090     ("lower" . gnus-summary-lower-thread)
1091     ("kill" . gnus-summary-kill-thread)
1092     "post"
1093     ("post" . gnus-summary-post-news)
1094     ("mail" . gnus-summary-mail)
1095     ("followup" . gnus-summary-followup-with-original)
1096     ("reply" . gnus-summary-reply-with-original)
1097     ("cancel" . gnus-summary-cancel-article)
1098     "misc"
1099     ("exit" . gnus-summary-exit)
1100     ("fed-up" . gnus-summary-catchup-and-goto-next-group)))
1101
1102 (defvar gnus-carpal-server-buffer-buttons
1103   '(("add" . gnus-server-add-server)
1104     ("browse" . gnus-server-browse-server)
1105     ("list" . gnus-server-list-servers)
1106     ("kill" . gnus-server-kill-server)
1107     ("yank" . gnus-server-yank-server)
1108     ("copy" . gnus-server-copy-server)
1109     ("exit" . gnus-server-exit)))
1110
1111 (defvar gnus-carpal-browse-buffer-buttons
1112   '(("subscribe" . gnus-browse-unsubscribe-current-group)
1113     ("exit" . gnus-browse-exit)))
1114
1115 (defvar gnus-carpal-group-buffer "*Carpal Group*")
1116 (defvar gnus-carpal-summary-buffer "*Carpal Summary*")
1117 (defvar gnus-carpal-server-buffer "*Carpal Server*")
1118 (defvar gnus-carpal-browse-buffer "*Carpal Browse*")
1119
1120 (defvar gnus-carpal-attached-buffer nil)
1121
1122 (defvar gnus-carpal-mode-hook nil
1123   "*Hook run in carpal mode buffers.")
1124
1125 (defvar gnus-carpal-button-face 'bold
1126   "*Face used on carpal buttons.")
1127
1128 (defvar gnus-carpal-header-face 'bold-italic
1129   "*Face used on carpal buffer headers.")
1130
1131 (defvar gnus-carpal-mode-map nil)
1132 (put 'gnus-carpal-mode 'mode-class 'special)
1133
1134 (if gnus-carpal-mode-map
1135     nil
1136   (setq gnus-carpal-mode-map (make-keymap))
1137   (suppress-keymap gnus-carpal-mode-map)
1138   (define-key gnus-carpal-mode-map " " 'gnus-carpal-select)
1139   (define-key gnus-carpal-mode-map "\r" 'gnus-carpal-select)
1140   (define-key gnus-carpal-mode-map gnus-mouse-2 'gnus-carpal-mouse-select))
1141
1142 (defun gnus-carpal-mode ()
1143   "Major mode for clicking buttons.
1144
1145 All normal editing commands are switched off.
1146 \\<gnus-carpal-mode-map>
1147 The following commands are available:
1148
1149 \\{gnus-carpal-mode-map}"
1150   (interactive)
1151   (kill-all-local-variables)
1152   (setq mode-line-modified "-- ")
1153   (setq major-mode 'gnus-carpal-mode)
1154   (setq mode-name "Gnus Carpal")
1155   (setq mode-line-process nil)
1156   (use-local-map gnus-carpal-mode-map)
1157   (buffer-disable-undo (current-buffer))
1158   (setq buffer-read-only t)
1159   (make-local-variable 'gnus-carpal-attached-buffer)
1160   (run-hooks 'gnus-carpal-mode-hook))
1161
1162 (defun gnus-carpal-setup-buffer (type)
1163   (let ((buffer (symbol-value (intern (format "gnus-carpal-%s-buffer" type)))))
1164     (if (get-buffer buffer)
1165         ()
1166       (save-excursion
1167         (set-buffer (get-buffer-create buffer))
1168         (gnus-carpal-mode)
1169         (setq gnus-carpal-attached-buffer
1170               (intern (format "gnus-%s-buffer" type)))
1171         (gnus-add-current-to-buffer-list)
1172         (let ((buttons (symbol-value
1173                         (intern (format "gnus-carpal-%s-buffer-buttons"
1174                                         type))))
1175               (buffer-read-only nil)
1176               button)
1177           (while buttons
1178             (setq button (car buttons)
1179                   buttons (cdr buttons))
1180             (if (stringp button)
1181                 (gnus-set-text-properties
1182                  (point)
1183                  (prog2 (insert button) (point) (insert " "))
1184                  (list 'face gnus-carpal-header-face))
1185               (gnus-set-text-properties
1186                (point)
1187                (prog2 (insert (car button)) (point) (insert " "))
1188                (list 'gnus-callback (cdr button)
1189                      'face gnus-carpal-button-face
1190                      gnus-mouse-face-prop 'highlight))))
1191           (let ((fill-column (- (window-width) 2)))
1192             (fill-region (point-min) (point-max)))
1193           (set-window-point (get-buffer-window (current-buffer))
1194                             (point-min)))))))
1195
1196 (defun gnus-carpal-select ()
1197   "Select the button under point."
1198   (interactive)
1199   (let ((func (get-text-property (point) 'gnus-callback)))
1200     (if (null func)
1201         ()
1202       (pop-to-buffer (symbol-value gnus-carpal-attached-buffer))
1203       (call-interactively func))))
1204
1205 (defun gnus-carpal-mouse-select (event)
1206   "Select the button under the mouse pointer."
1207   (interactive "e")
1208   (mouse-set-point event)
1209   (gnus-carpal-select))
1210
1211 ;;;
1212 ;;; article highlights
1213 ;;;
1214
1215 ;; Written by Per Abrahamsen <abraham@iesd.auc.dk>.
1216
1217 ;;; Internal Variables:
1218
1219 (defvar gnus-button-regexp nil)
1220 ;; Regexp matching any of the regexps from `gnus-button-alist'.
1221
1222 (defvar gnus-button-last nil)
1223 ;; The value of `gnus-button-alist' when `gnus-button-regexp' was build.
1224
1225 ;;; Commands:
1226
1227 (defun gnus-article-push-button (event)
1228   "Check text under the mouse pointer for a callback function.
1229 If the text under the mouse pointer has a `gnus-callback' property,
1230 call it with the value of the `gnus-data' text property."
1231   (interactive "e")
1232   (set-buffer (window-buffer (posn-window (event-start event))))
1233   (let* ((pos (posn-point (event-start event)))
1234          (data (get-text-property pos 'gnus-data))
1235          (fun (get-text-property pos 'gnus-callback)))
1236     (if fun (funcall fun data))))
1237
1238 (defun gnus-article-press-button ()
1239   "Check text at point for a callback function.
1240 If the text at point has a `gnus-callback' property,
1241 call it with the value of the `gnus-data' text property."
1242   (interactive)
1243   (let* ((data (get-text-property (point) 'gnus-data))
1244          (fun (get-text-property (point) 'gnus-callback)))
1245     (if fun (funcall fun data))))
1246
1247 (defun gnus-article-prev-button (n)
1248   "Move point to N buttons backward.
1249 If N is negative, move forward instead."
1250   (interactive "p")
1251   (gnus-article-next-button (- n)))
1252
1253 (defun gnus-article-next-button (n)
1254   "Move point to N buttons forward.
1255 If N is negative, move backward instead."
1256   (interactive "p")
1257   (let ((function (if (< n 0) 'previous-single-property-change
1258                     'next-single-property-change))
1259         (inhibit-point-motion-hooks t)
1260         (backward (< n 0))
1261         (limit (if (< n 0) (point-min) (point-max))))
1262     (setq n (abs n))
1263     (while (and (not (= limit (point)))
1264                 (> n 0))
1265       ;; Skip past the current button.
1266       (when (get-text-property (point) 'gnus-callback)
1267         (goto-char (funcall function (point) 'gnus-callback nil limit)))
1268       ;; Go to the next (or previous) button.
1269       (gnus-goto-char (funcall function (point) 'gnus-callback nil limit))
1270       ;; Put point at the start of the button.
1271       (when (and backward (not (get-text-property (point) 'gnus-callback)))
1272         (goto-char (funcall function (point) 'gnus-callback nil limit)))
1273       ;; Skip past intangible buttons.
1274       (when (get-text-property (point) 'intangible)
1275         (incf n))
1276       (decf n))
1277     (unless (zerop n)
1278       (gnus-message 5 "No more buttons"))
1279     n))
1280
1281 (defun gnus-article-highlight (&optional force)
1282   "Highlight current article.
1283 This function calls `gnus-article-highlight-headers',
1284 `gnus-article-highlight-citation',
1285 `gnus-article-highlight-signature', and `gnus-article-add-buttons' to
1286 do the highlighting.  See the documentation for those functions."
1287   (interactive (list 'force))
1288   (gnus-article-highlight-headers)
1289   (gnus-article-highlight-citation force)
1290   (gnus-article-highlight-signature)
1291   (gnus-article-add-buttons force)
1292   (gnus-article-add-buttons-to-head))
1293
1294 (defun gnus-article-highlight-some (&optional force)
1295   "Highlight current article.
1296 This function calls `gnus-article-highlight-headers',
1297 `gnus-article-highlight-signature', and `gnus-article-add-buttons' to
1298 do the highlighting.  See the documentation for those functions."
1299   (interactive (list 'force))
1300   (gnus-article-highlight-headers)
1301   (gnus-article-highlight-signature)
1302   (gnus-article-add-buttons))
1303
1304 (defun gnus-article-highlight-headers ()
1305   "Highlight article headers as specified by `gnus-header-face-alist'."
1306   (interactive)
1307   (save-excursion
1308     (set-buffer gnus-article-buffer)
1309     (save-restriction
1310       (let ((alist gnus-header-face-alist)
1311             (buffer-read-only nil)
1312             (case-fold-search t)
1313             (inhibit-point-motion-hooks t)
1314             entry regexp header-face field-face from hpoints fpoints)
1315         (goto-char (point-min))
1316         (when (search-forward "\n\n" nil t)
1317           (narrow-to-region (1- (point)) (point-min))
1318           (while (setq entry (pop alist))
1319             (goto-char (point-min))
1320             (setq regexp (concat "^\\("
1321                                  (if (string-equal "" (nth 0 entry))
1322                                      "[^\t ]"
1323                                    (nth 0 entry))
1324                                  "\\)")
1325                   header-face (nth 1 entry)
1326                   field-face (nth 2 entry))
1327             (while (and (re-search-forward regexp nil t)
1328                         (not (eobp)))
1329               (beginning-of-line)
1330               (setq from (point))
1331               (or (search-forward ":" nil t)
1332                   (forward-char 1))
1333               (when (and header-face
1334                          (not (memq (point) hpoints)))
1335                 (push (point) hpoints)
1336                 (gnus-put-text-property from (point) 'face header-face))
1337               (when (and field-face
1338                          (not (memq (setq from (point)) fpoints)))
1339                 (push from fpoints)
1340                 (if (re-search-forward "^[^ \t]" nil t)
1341                     (forward-char -2)
1342                   (goto-char (point-max)))
1343                 (gnus-put-text-property from (point) 'face field-face)))))))))
1344
1345 (defun gnus-article-highlight-signature ()
1346   "Highlight the signature in an article.
1347 It does this by highlighting everything after
1348 `gnus-signature-separator' using `gnus-signature-face'."
1349   (interactive)
1350   (save-excursion
1351     (set-buffer gnus-article-buffer)
1352     (let ((buffer-read-only nil)
1353           (inhibit-point-motion-hooks t))
1354       (save-restriction
1355         (when (and gnus-signature-face
1356                    (gnus-narrow-to-signature))
1357           (gnus-overlay-put (gnus-make-overlay (point-min) (point-max))
1358                             'face gnus-signature-face)
1359           (widen)
1360           (re-search-backward gnus-signature-separator nil t)
1361           (let ((start (match-beginning 0))
1362                 (end (set-marker (make-marker) (1+ (match-end 0)))))
1363             (gnus-article-add-button start (1- end) 'gnus-signature-toggle
1364                                      end)))))))
1365
1366 (defun gnus-article-add-buttons (&optional force)
1367   "Find external references in the article and make buttons of them.
1368 \"External references\" are things like Message-IDs and URLs, as
1369 specified by `gnus-button-alist'."
1370   (interactive (list 'force))
1371   (save-excursion
1372     (set-buffer gnus-article-buffer)
1373     ;; Remove all old markers.
1374     (while gnus-button-marker-list
1375       (set-marker (pop gnus-button-marker-list) nil))
1376     (let ((buffer-read-only nil)
1377           (inhibit-point-motion-hooks t)
1378           (case-fold-search t)
1379           (alist gnus-button-alist)
1380           beg entry regexp)
1381       (goto-char (point-min))
1382       ;; We skip the headers.
1383       (unless (search-forward "\n\n" nil t)
1384         (goto-char (point-max)))
1385       (setq beg (point))
1386       (while (setq entry (pop alist))
1387         (setq regexp (car entry))
1388         (goto-char beg)
1389         (while (re-search-forward regexp nil t)
1390           (let* ((start (and entry (match-beginning (nth 1 entry))))
1391                  (end (and entry (match-end (nth 1 entry))))
1392                  (from (match-beginning 0)))
1393             (when (or (eq t (nth 1 entry))
1394                       (eval (nth 1 entry)))
1395               ;; That optional form returned non-nil, so we add the
1396               ;; button.
1397               (gnus-article-add-button
1398                start end 'gnus-button-push
1399                (car (push (set-marker (make-marker) from)
1400                           gnus-button-marker-list))))))))))
1401
1402 ;; Add buttons to the head of an article.
1403 (defun gnus-article-add-buttons-to-head ()
1404   "Add buttons to the head of the article."
1405   (interactive)
1406   (save-excursion
1407     (set-buffer gnus-article-buffer)
1408     (let ((buffer-read-only nil)
1409           (inhibit-point-motion-hooks t)
1410           (case-fold-search t)
1411           (alist gnus-header-button-alist)
1412           entry beg end)
1413       (nnheader-narrow-to-headers)
1414       (while alist
1415         ;; Each alist entry.
1416         (setq entry (car alist)
1417               alist (cdr alist))
1418         (goto-char (point-min))
1419         (while (re-search-forward (car entry) nil t)
1420           ;; Each header matching the entry.
1421           (setq beg (match-beginning 0))
1422           (setq end (or (and (re-search-forward "^[^ \t]" nil t)
1423                              (match-beginning 0))
1424                         (point-max)))
1425           (goto-char beg)
1426           (while (re-search-forward (nth 1 entry) end t)
1427             ;; Each match within a header.
1428             (let* ((from (match-beginning 0))
1429                    (entry (cdr entry))
1430                    (start (match-beginning (nth 1 entry)))
1431                    (end (match-end (nth 1 entry)))
1432                    (form (nth 2 entry)))
1433               (goto-char (match-end 0))
1434               (and (eval form)
1435                    (gnus-article-add-button
1436                     start end (nth 3 entry)
1437                     (buffer-substring (match-beginning (nth 4 entry))
1438                                       (match-end (nth 4 entry)))))))
1439           (goto-char end))))
1440     (widen)))
1441
1442 ;;; External functions:
1443
1444 (defun gnus-article-add-button (from to fun &optional data)
1445   "Create a button between FROM and TO with callback FUN and data DATA."
1446   (and gnus-article-button-face
1447        (gnus-overlay-put (gnus-make-overlay from to)
1448                          'face gnus-article-button-face))
1449   (gnus-add-text-properties
1450    from to
1451    (nconc (and gnus-article-mouse-face
1452                (list gnus-mouse-face-prop gnus-article-mouse-face))
1453           (list 'gnus-callback fun)
1454           (and data (list 'gnus-data data)))))
1455
1456 ;;; Internal functions:
1457
1458 (defun gnus-signature-toggle (end)
1459   (save-excursion
1460     (set-buffer gnus-article-buffer)
1461     (let ((buffer-read-only nil)
1462           (inhibit-point-motion-hooks t))
1463       (if (get-text-property end 'invisible)
1464           (gnus-unhide-text end (point-max))
1465         (gnus-hide-text end (point-max) gnus-hidden-properties)))))
1466
1467 (defun gnus-button-entry ()
1468   ;; Return the first entry in `gnus-button-alist' matching this place.
1469   (let ((alist gnus-button-alist)
1470         (entry nil))
1471     (while alist
1472       (setq entry (pop alist))
1473       (if (looking-at (car entry))
1474           (setq alist nil)
1475         (setq entry nil)))
1476     entry))
1477
1478 (defun gnus-button-push (marker)
1479   ;; Push button starting at MARKER.
1480   (save-excursion
1481     (set-buffer gnus-article-buffer)
1482     (goto-char marker)
1483     (let* ((entry (gnus-button-entry))
1484            (inhibit-point-motion-hooks t)
1485            (fun (nth 3 entry))
1486            (args (mapcar (lambda (group)
1487                            (let ((string (buffer-substring
1488                                           (match-beginning group)
1489                                           (match-end group))))
1490                              (gnus-set-text-properties
1491                               0 (length string) nil string)
1492                              string))
1493                          (nthcdr 4 entry))))
1494       (cond
1495        ((fboundp fun)
1496         (apply fun args))
1497        ((and (boundp fun)
1498              (fboundp (symbol-value fun)))
1499         (apply (symbol-value fun) args))
1500        (t
1501         (gnus-message 1 "You must define `%S' to use this button"
1502                       (cons fun args)))))))
1503
1504 (defun gnus-button-message-id (message-id)
1505   "Fetch MESSAGE-ID."
1506   (save-excursion
1507     (set-buffer gnus-summary-buffer)
1508     (gnus-summary-refer-article message-id)))
1509
1510 (defun gnus-button-mailto (address)
1511   ;; Mail to ADDRESS.
1512   (set-buffer (gnus-copy-article-buffer))
1513   (message-reply address))
1514
1515 (defun gnus-button-reply (address)
1516   ;; Reply to ADDRESS.
1517   (message-reply address))
1518
1519 (defun gnus-button-url (address)
1520   "Browse ADDRESS."
1521   (funcall browse-url-browser-function address))
1522
1523 ;;; Next/prev buttons in the article buffer.
1524
1525 (defvar gnus-next-page-line-format "%{%(Next page...%)%}\n")
1526 (defvar gnus-prev-page-line-format "%{%(Previous page...%)%}\n")
1527
1528 (defvar gnus-prev-page-map nil)
1529 (unless gnus-prev-page-map
1530   (setq gnus-prev-page-map (make-sparse-keymap))
1531   (define-key gnus-prev-page-map gnus-mouse-2 'gnus-button-prev-page)
1532   (define-key gnus-prev-page-map "\r" 'gnus-button-prev-page))
1533
1534 (defun gnus-insert-prev-page-button ()
1535   (let ((buffer-read-only nil))
1536     (gnus-eval-format
1537      gnus-prev-page-line-format nil
1538      `(gnus-prev t local-map ,gnus-prev-page-map
1539                  gnus-callback gnus-article-button-prev-page))))
1540
1541 (defvar gnus-next-page-map nil)
1542 (unless gnus-next-page-map
1543   (setq gnus-next-page-map (make-keymap))
1544   (suppress-keymap gnus-prev-page-map)
1545   (define-key gnus-next-page-map gnus-mouse-2 'gnus-button-next-page)
1546   (define-key gnus-next-page-map "\r" 'gnus-button-next-page))
1547
1548 (defun gnus-button-next-page ()
1549   "Go to the next page."
1550   (interactive)
1551   (let ((win (selected-window)))
1552     (select-window (get-buffer-window gnus-article-buffer t))
1553     (gnus-article-next-page)
1554     (select-window win)))
1555
1556 (defun gnus-button-prev-page ()
1557   "Go to the prev page."
1558   (interactive)
1559   (let ((win (selected-window)))
1560     (select-window (get-buffer-window gnus-article-buffer t))
1561     (gnus-article-prev-page)
1562     (select-window win)))
1563
1564 (defun gnus-insert-next-page-button ()
1565   (let ((buffer-read-only nil))
1566     (gnus-eval-format gnus-next-page-line-format nil
1567                       `(gnus-next t local-map ,gnus-next-page-map
1568                                   gnus-callback
1569                                   gnus-article-button-next-page))))
1570
1571 (defun gnus-article-button-next-page (arg)
1572   "Go to the next page."
1573   (interactive "P")
1574   (let ((win (selected-window)))
1575     (select-window (get-buffer-window gnus-article-buffer t))
1576     (gnus-article-next-page)
1577     (select-window win)))
1578
1579 (defun gnus-article-button-prev-page (arg)
1580   "Go to the prev page."
1581   (interactive "P")
1582   (let ((win (selected-window)))
1583     (select-window (get-buffer-window gnus-article-buffer t))
1584     (gnus-article-prev-page)
1585     (select-window win)))
1586
1587 ;;; Compatibility Functions:
1588
1589 (or (fboundp 'rassoc)
1590     ;; Introduced in Emacs 19.29.
1591     (defun rassoc (elt list)
1592       "Return non-nil if ELT is `equal' to the cdr of an element of LIST.
1593 The value is actually the element of LIST whose cdr is ELT."
1594       (let (result)
1595         (while list
1596           (setq result (car list))
1597           (if (equal (cdr result) elt)
1598               (setq list nil)
1599             (setq result nil
1600                   list (cdr list))))
1601         result)))
1602
1603 ; (require 'gnus-cus)
1604 (gnus-ems-redefine)
1605 (provide 'gnus-vis)
1606
1607 ;;; gnus-vis.el ends here