Synch with Gnus.
[elisp/gnus.git-] / lisp / gnus-art.el
index 5dc4534..8bed980 100644 (file)
@@ -37,6 +37,7 @@
 (require 'gnus-int)
 (require 'alist)
 (require 'mime-view)
+(require 'wid-edit)
 
 ;; Avoid byte-compile warnings.
 (eval-when-compile
@@ -44,7 +45,6 @@
   (require 'mail-parse)
   (require 'mm-decode)
   (require 'mm-view)
-  (require 'wid-edit)
   (require 'mm-uu)
   )
 
     "^Precedence:" "^Original-[-A-Za-z]+:" "^X-filename:" "^X-Orcpt:"
     "^Old-Received:" "^X-Pgp" "^X-Auth:" "^X-From-Line:"
     "^X-Gnus-Article-Number:" "^X-Majordomo:" "^X-Url:" "^X-Sender:"
-    "^MBOX-Line" "^Priority:" "^X-Pgp" "^X400-[-A-Za-z]+:"
+    "^MBOX-Line" "^Priority:" "^X400-[-A-Za-z]+:"
     "^Status:" "^X-Gnus-Mail-Source:" "^Cancel-Lock:"
     "^X-FTN" "^X-EXP32-SerialNo:" "^Encoding:" "^Importance:"
     "^Autoforwarded:" "^Original-Encoded-Information-Types:" "^X-Ya-Pop3:"
@@ -146,7 +146,7 @@ If `gnus-visible-headers' is non-nil, this variable will be ignored."
   :group 'gnus-article-hiding)
 
 (defcustom gnus-visible-headers
-  "^From:\\|^Newsgroups:\\|^Subject:\\|^Date:\\|^Followup-To:\\|^Reply-To:\\|^Organization:\\|^Summary:\\|^Keywords:\\|^To:\\|^[BGF]?Cc:\\|^Posted-To:\\|^Mail-Copies-To:\\|^Apparently-To:\\|^Gnus-Warning:\\|^Resent-From:\\|^X-Sent:"
+  "^From:\\|^Newsgroups:\\|^Subject:\\|^Date:\\|^Followup-To:\\|^Reply-To:\\|^Organization:\\|^Summary:\\|^Keywords:\\|^To:\\|^[BGF]?Cc:\\|^Posted-To:\\|^Mail-Copies-To:\\|^Mail-Followup-To:\\|^Apparently-To:\\|^Gnus-Warning:\\|^Resent-From:\\|^X-Sent:"
   "*All headers that do not match this regexp will be hidden.
 This variable can also be a list of regexp of headers to remain visible.
 If this variable is non-nil, `gnus-ignored-headers' will be ignored."
@@ -210,20 +210,30 @@ regexp.  If it matches, the text in question is not a signature."
 
 (defcustom gnus-article-x-face-command
   (cond
+   ;; Fixme: This isn't the right thing for mixed graphical and and
+   ;; non-graphical frames in a session.
+   ;; gnus-xmas.el overrides this for XEmacs.
    ((and (fboundp 'image-type-available-p)
-        (or (image-type-available-p 'xpm)
-            (image-type-available-p 'xbm)))
-    'gnus-article-display-xface)
-   ((and (not gnus-xemacs)
+        (image-type-available-p 'xbm))
+    (if (module-installed-p 'x-face-e21)
+       'x-face-decode-message-header
+      'gnus-article-display-xface))
+   ((and (not (featurep 'xemacs))
         window-system
         (module-installed-p 'x-face-mule))
     'x-face-mule-gnus-article-display-x-face)
+   (gnus-article-compface-xbm
+    "{ echo '/* Width=48, Height=48 */'; uncompface; } | display -")
    (t
-    "{ echo '/* Width=48, Height=48 */'; uncompface; } | icontopbm | display -"))
+    "{ echo '/* Width=48, Height=48 */'; uncompface; } | icontopbm | \
+display -"))
   "*String or function to be executed to display an X-Face header.
 If it is a string, the command will be executed in a sub-shell
 asynchronously.         The compressed face will be piped to this command."
   :type '(choice string
+                (function-item
+                 :tag "x-face-decode-message-header (x-face-e21)"
+                 x-face-decode-message-header)
                 (function-item gnus-article-display-xface)
                 (function-item x-face-mule-gnus-article-display-x-face)
                 function)
@@ -234,6 +244,13 @@ asynchronously.     The compressed face will be piped to this command."
   :type '(choice regexp (const nil))
   :group 'gnus-article-washing)
 
+(defcustom gnus-article-banner-alist nil
+  "Banner alist for stripping.
+For example, 
+     ((egroups . \"^[ \\t\\n]*-------------------+\\\\( eGroups Sponsor -+\\\\)?....\\n\\\\(.+\\n\\\\)+\"))"
+  :type '(repeat (cons symbol regexp))
+  :group 'gnus-article-washing)
+
 (defcustom gnus-emphasis-alist
   (let ((format
         "\\(\\s-\\|^\\|[-\"]\\|\\s(\\)\\(%s\\(\\w+\\(\\s-+\\w+\\)*[.,]?\\)%s\\)\\(\\s-\\|[-,;:\"]\\s-\\|[?!.]+\\s-\\|\\s)\\)")
@@ -270,6 +287,14 @@ is the face used for highlighting."
                       face))
   :group 'gnus-article-emphasis)
 
+(defcustom gnus-emphasize-whitespace-regexp "^[ \t]+\\|[ \t]*\n"
+  "A regexp to describe whitespace which should not be emphasized.
+Typical values are \"^[ \\t]+\\\\|[ \\t]*\\n\" and \"[ \\t]+\\\\|[ \\t]*\\n\".
+The former avoids underlining of leading and trailing whitespace,
+and the latter avoids underlining any whitespace at all."
+  :group 'gnus-article-emphasis
+  :type 'regexp)
+
 (defface gnus-emphasis-bold '((t (:bold t)))
   "Face used for displaying strong emphasized text (*word*)."
   :group 'gnus-article-emphasis)
@@ -494,7 +519,8 @@ Obsolete; use the face `gnus-signature-face' for customizations instead."
   :group 'gnus-article-signature)
 
 (defface gnus-signature-face
-  '((t (:italic t)))
+  '((t
+     (:italic t)))
   "Face used for highlighting a signature in the article buffer."
   :group 'gnus-article-highlight
   :group 'gnus-article-signature)
@@ -603,7 +629,8 @@ displayed by the first non-nil matching CONTENT face."
   "Function used to decode headers.")
 
 (defvar gnus-article-dumbquotes-map
-  '(("\202" ",")
+  '(("\200" "EUR")
+    ("\202" ",")
     ("\203" "f")
     ("\204" ",,")
     ("\205" "...")
@@ -614,8 +641,8 @@ displayed by the first non-nil matching CONTENT face."
     ("\223" "``")
     ("\224" "\"")
     ("\225" "*")
-    ("\226" "---")
-    ("\227" "-")
+    ("\226" "-")
+    ("\227" "--")
     ("\231" "(TM)")
     ("\233" ">")
     ("\234" "oe")
@@ -666,6 +693,22 @@ used."
                :value undisplayed-alternative)
          (function)))
 
+(defcustom gnus-mime-action-alist
+  '(("save to file" . gnus-mime-save-part)
+    ("save and strip" . gnus-mime-save-part-and-strip)
+    ("display as text" . gnus-mime-inline-part)
+    ("view the part" . gnus-mime-view-part)
+    ("pipe to command" . gnus-mime-pipe-part)
+    ("toggle display" . gnus-article-press-button)
+    ("toggle display" . gnus-article-view-part-as-charset)
+    ("view as type" . gnus-mime-view-part-as-type)
+    ("internalize type" . gnus-mime-internalize-part)
+    ("externalize type" . gnus-mime-externalize-part))
+  "An alist of actions that run on the MIME attachment."
+  :group 'gnus-article-mime
+  :type '(repeat (cons (string :tag "name")
+                      (function))))
+
 ;;;
 ;;; The treatment variables
 ;;;
@@ -767,6 +810,13 @@ See the manual for details."
   :group 'gnus-article-treat
   :type gnus-article-treat-custom)
 
+(defcustom gnus-treat-hide-citation-maybe nil
+  "Hide cited text.
+Valid values are nil, t, `head', `last', an integer or a predicate.
+See the manual for details."
+  :group 'gnus-article-treat
+  :type gnus-article-treat-custom)
+
 (defcustom gnus-treat-strip-list-identifiers 'head
   "Strip list identifiers from `gnus-list-identifiers`.
 Valid values are nil, t, `head', `last', an integer or a predicate.
@@ -892,11 +942,13 @@ See the manual for details."
 (put 'gnus-treat-overstrike 'highlight t)
 
 (defcustom gnus-treat-display-xface
-  (if (or (and gnus-xemacs (featurep 'xface))
-         (eq 'x-face-mule-gnus-article-display-x-face
-             gnus-article-x-face-command))
-      'head
-    nil)
+  (and (or (and (fboundp 'image-type-available-p)
+               (image-type-available-p 'xbm)
+               (string-match "^0x" (shell-command-to-string "uncompface")))
+          (and (featurep 'xemacs) (featurep 'xface))
+          (eq 'x-face-mule-gnus-article-display-x-face
+              gnus-article-x-face-command))
+       'head)
   "Display X-Face headers.
 Valid values are nil, t, `head', `last', an integer or a predicate.
 See the manual for details."
@@ -905,8 +957,11 @@ See the manual for details."
 (put 'gnus-treat-display-xface 'highlight t)
 
 (defcustom gnus-treat-display-smileys
-  (if (or (and gnus-xemacs (featurep 'xpm))
-         (and (not gnus-xemacs)
+  (if (or (and (featurep 'xemacs)
+              (featurep 'xpm))
+         (and (fboundp 'image-type-available-p)
+              (image-type-available-p 'pbm))
+         (and (not (featurep 'xemacs))
               window-system
               (module-installed-p 'gnus-bitmap)))
       t
@@ -918,7 +973,7 @@ See the manual for details."
   :type gnus-article-treat-custom)
 (put 'gnus-treat-display-smileys 'highlight t)
 
-(defcustom gnus-treat-display-picons (if gnus-xemacs 'head nil)
+(defcustom gnus-treat-display-picons (if (featurep 'xemacs) 'head nil)
   "Display picons.
 Valid values are nil, t, `head', `last', an integer or a predicate.
 See the manual for details."
@@ -964,6 +1019,26 @@ See the manual for details."
   :group 'gnus-article-treat
   :type gnus-article-treat-custom)
 
+(defcustom gnus-treat-x-pgp-sig nil
+  "Verify X-PGP-Sig.
+To automatically treat X-PGP-Sig, set it to head.
+Valid values are nil, t, `head', `last', an integer or a predicate.
+See the manual for details."
+  :group 'gnus-article-treat
+  :group 'mime-security
+  :type gnus-article-treat-custom)
+
+(defvar gnus-article-encrypt-protocol-alist
+  '(("PGP" . mml2015-self-encrypt)))
+
+;; Set to nil if more than one protocol added to
+;; gnus-article-encrypt-protocol-alist.
+(defcustom gnus-article-encrypt-protocol "PGP"
+  "The protocol used for encrypt articles.
+It is a string, such as \"PGP\". If nil, ask user."
+  :type 'string
+  :group 'mime-security)
+
 ;;; Internal variables
 
 (defvar article-goto-body-goes-to-point-min-p nil)
@@ -974,6 +1049,7 @@ See the manual for details."
 (defvar gnus-treatment-function-alist
   '((gnus-treat-decode-article-as-default-mime-charset
      gnus-article-decode-article-as-default-mime-charset)
+    (gnus-treat-x-pgp-sig gnus-article-verify-x-pgp-sig)
     (gnus-treat-strip-banner gnus-article-strip-banner)
     (gnus-treat-strip-headers-in-body gnus-article-strip-headers-in-body)
     (gnus-treat-buttonize gnus-article-add-buttons)
@@ -985,6 +1061,7 @@ See the manual for details."
     (gnus-treat-hide-boring-headers gnus-article-hide-boring-headers)
     (gnus-treat-hide-signature gnus-article-hide-signature)
     (gnus-treat-hide-citation gnus-article-hide-citation)
+    (gnus-treat-hide-citation-maybe gnus-article-hide-citation-maybe)
     (gnus-treat-strip-list-identifiers gnus-article-hide-list-identifiers)
     (gnus-treat-strip-pgp gnus-article-hide-pgp)
     (gnus-treat-strip-pem gnus-article-hide-pem)
@@ -1017,7 +1094,8 @@ See the manual for details."
 
 (defvar gnus-article-mode-syntax-table
   (let ((table (copy-syntax-table text-mode-syntax-table)))
-    (modify-syntax-entry ?- "w" table)
+    ;; This causes the citation match run O(2^n).
+    ;; (modify-syntax-entry ?- "w" table) 
     (modify-syntax-entry ?> ")" table)
     (modify-syntax-entry ?< "(" table)
     table)
@@ -1037,11 +1115,12 @@ Initialized from `text-mode-syntax-table.")
 
 (defsubst gnus-article-hide-text (b e props)
   "Set text PROPS on the B to E region, extending `intangible' 1 past B."
-  (add-text-properties b e props)
+  (gnus-add-text-properties-when 'article-type nil b e props)
   (when (memq 'intangible props)
     (put-text-property
      (max (1- b) (point-min))
      b 'intangible (cddr (memq 'intangible props)))))
+
 (defsubst gnus-article-unhide-text (b e)
   "Remove hidden text properties from region between B and E."
   (remove-text-properties b e gnus-hidden-properties)
@@ -1349,7 +1428,7 @@ if given a positive prefix, always hide."
          (narrow-to-region header-start header-end)
          (article-hide-headers)
          ;; Re-display X-Face image under XEmacs.
-         (when (and gnus-xemacs
+         (when (and (featurep 'xemacs)
                     (gnus-functionp gnus-article-x-face-command))
            (let ((func (cadr (assq 'gnus-treat-display-xface
                                    gnus-treatment-function-alist)))
@@ -1598,7 +1677,7 @@ If PROMPT (the prefix), prompt for a coding system to use."
                             (set-buffer gnus-summary-buffer)
                           (error))
                         gnus-newsgroup-ignored-charsets))
-       ct cte ctl charset)
+       ct cte ctl charset format)
   (save-excursion
     (save-restriction
       (article-narrow-to-head)
@@ -1610,7 +1689,8 @@ If PROMPT (the prefix), prompt for a coding system to use."
                     (prompt
                      (mm-read-coding-system "Charset to decode: "))
                     (ctl
-                     (mail-content-type-get ctl 'charset))))
+                     (mail-content-type-get ctl 'charset)))
+           format (and ctl (mail-content-type-get ctl 'format)))
       (when cte
        (setq cte (mail-header-strip cte)))
       (if (and ctl (not (string-match "/" (car ctl)))) 
@@ -1619,8 +1699,13 @@ If PROMPT (the prefix), prompt for a coding system to use."
     (forward-line 1)
     (save-restriction
       (narrow-to-region (point) (point-max))
+      (when (and (eq mail-parse-charset 'gnus-decoded)
+                (eq (mm-body-7-or-8) '8bit))
+       ;; The text code could have been decoded.
+       (setq charset mail-parse-charset))
       (when (and (or (not ctl)
-                    (equal (car ctl) "text/plain")))
+                    (equal (car ctl) "text/plain"))
+                (not format)) ;; article with format will decode later.
        (mm-decode-body
         charset (and cte (intern (downcase
                                   (gnus-strip-whitespace cte))))
@@ -1641,13 +1726,57 @@ If FORCE, decode the article whether it is marked as quoted-printable
 or not."
   (interactive (list 'force))
   (save-excursion
-    (let ((buffer-read-only nil)
-         (type (gnus-fetch-field "content-transfer-encoding"))
-         (charset gnus-newsgroup-charset))
+    (let ((buffer-read-only nil) type charset)
+      (if (gnus-buffer-live-p gnus-original-article-buffer)
+         (with-current-buffer gnus-original-article-buffer
+           (setq type
+                 (gnus-fetch-field "content-transfer-encoding"))
+           (let* ((ct (gnus-fetch-field "content-type"))
+                  (ctl (and ct 
+                            (ignore-errors
+                              (mail-header-parse-content-type ct)))))
+             (setq charset (and ctl
+                                (mail-content-type-get ctl 'charset)))
+             (if (stringp charset)
+                 (setq charset (intern (downcase charset)))))))
+      (unless charset 
+       (setq charset gnus-newsgroup-charset))
+      (when (or force
+               (and type (let ((case-fold-search t))
+                           (string-match "quoted-printable" type))))
+       (article-goto-body)
+       (quoted-printable-decode-region
+        (point) (point-max) (mm-charset-to-coding-system charset))))))
+
+(defun article-de-base64-unreadable (&optional force)
+  "Translate a base64 article.
+If FORCE, decode the article whether it is marked as base64 not."
+  (interactive (list 'force))
+  (save-excursion
+    (let ((buffer-read-only nil) type charset)
+      (if (gnus-buffer-live-p gnus-original-article-buffer)
+         (with-current-buffer gnus-original-article-buffer
+           (setq type
+                 (gnus-fetch-field "content-transfer-encoding"))
+           (let* ((ct (gnus-fetch-field "content-type"))
+                  (ctl (and ct 
+                            (ignore-errors
+                              (mail-header-parse-content-type ct)))))
+             (setq charset (and ctl
+                                (mail-content-type-get ctl 'charset)))
+             (if (stringp charset)
+                 (setq charset (intern (downcase charset)))))))
+      (unless charset 
+       (setq charset gnus-newsgroup-charset))
       (when (or force
-               (and type (string-match "quoted-printable" (downcase type))))
+               (and type (let ((case-fold-search t))
+                           (string-match "base64" type))))
        (article-goto-body)
-       (quoted-printable-decode-region (point) (point-max) charset)))))
+       (save-restriction
+         (narrow-to-region (point) (point-max))
+         (base64-decode-region (point-min) (point-max))
+         (mm-decode-coding-region
+          (point-min) (point-max) (mm-charset-to-coding-system charset)))))))
 
 (eval-when-compile
   (require 'rfc1843))
@@ -1660,6 +1789,35 @@ or not."
     (let ((buffer-read-only nil))
       (rfc1843-decode-region (point-min) (point-max)))))
 
+(defun article-wash-html ()
+  "Format an html article."
+  (interactive)
+  (save-excursion
+    (let ((buffer-read-only nil)
+         charset)
+      (if (gnus-buffer-live-p gnus-original-article-buffer)
+         (with-current-buffer gnus-original-article-buffer
+           (let* ((ct (gnus-fetch-field "content-type"))
+                  (ctl (and ct 
+                            (ignore-errors
+                              (mail-header-parse-content-type ct)))))
+             (setq charset (and ctl
+                                (mail-content-type-get ctl 'charset)))
+             (if (stringp charset)
+                 (setq charset (intern (downcase charset)))))))
+      (unless charset 
+       (setq charset gnus-newsgroup-charset))
+      (article-goto-body)
+      (save-window-excursion
+       (save-restriction
+         (narrow-to-region (point) (point-max))
+         (mm-setup-w3)
+         (let ((w3-strict-width (window-width))
+               (url-standalone-mode t))
+           (condition-case var
+               (w3-region (point-min) (point-max))
+             (error))))))))
+
 (defun article-hide-list-identifiers ()
   "Remove list identifies from the Subject header.
 The `gnus-list-identifiers' variable specifies what to do."
@@ -1674,9 +1832,14 @@ The `gnus-list-identifiers' variable specifies what to do."
          (when regexp
            (goto-char (point-min))
            (when (re-search-forward
-                  (concat "^Subject: +\\(Re: +\\)?\\(" regexp " *\\)")
+                  (concat "^Subject: +\\(\\(\\(Re: +\\)?\\(" regexp 
+                          " *\\)\\)+\\(Re: +\\)?\\)")
                   nil t)
-             (delete-region (match-beginning 2) (match-end 0)))))))))
+             (let ((s (or (match-string 3) (match-string 5))))
+               (delete-region (match-beginning 1) (match-end 1))
+               (when s
+                 (goto-char (match-beginning 1))
+                 (insert s))))))))))
 
 (defun article-hide-pgp ()
   "Remove any PGP headers and signatures in the current article."
@@ -1747,7 +1910,7 @@ always hide."
   (save-excursion
     (save-restriction
       (let ((inhibit-point-motion-hooks t)
-           (banner (gnus-group-get-parameter gnus-newsgroup-name 'banner))
+           (banner (gnus-group-find-parameter gnus-newsgroup-name 'banner))
            (gnus-signature-limit nil)
            buffer-read-only beg end)
        (when banner
@@ -1758,6 +1921,10 @@ always hide."
              (widen)
              (forward-line -1)
              (delete-region (point) (point-max))))
+          ((symbolp banner)
+           (if (setq banner (cdr (assq banner gnus-article-banner-alist)))
+               (while (re-search-forward banner nil t)
+                 (delete-region (match-beginning 0) (match-end 0)))))
           ((stringp banner)
            (while (re-search-forward banner nil t)
              (delete-region (match-beginning 0) (match-end 0))))))))))
@@ -1985,24 +2152,16 @@ means show, 0 means toggle."
        'hidden
       nil)))
 
-(defun gnus-article-show-hidden-text (type &optional hide)
+(defun gnus-article-show-hidden-text (type &optional dummy)
   "Show all hidden text of type TYPE.
-If HIDE, hide the text instead."
-  (save-excursion
-    (let ((buffer-read-only nil)
-         (inhibit-point-motion-hooks t)
-         (end (point-min))
-         beg)
-      (while (setq beg (text-property-any end (point-max) 'article-type type))
-       (goto-char beg)
-       (setq end (or
-                  (text-property-not-all beg (point-max) 'article-type type)
-                  (point-max)))
-       (if hide
-           (gnus-article-hide-text beg end gnus-hidden-properties)
-         (gnus-article-unhide-text beg end))
-       (goto-char end))
-      t)))
+Originally it is hide instead of DUMMY."
+  (let ((buffer-read-only nil)
+       (inhibit-point-motion-hooks t))
+    (gnus-remove-text-properties-when 
+     'article-type type
+     (point-min) (point-max) 
+     (cons 'article-type (cons type
+                              gnus-hidden-properties)))))
 
 (defconst article-time-units
   `((year . ,(* 365.25 24 60 60))
@@ -2358,76 +2517,78 @@ This format is defined by the `gnus-article-time-format' variable."
   (let ((default-name
          (funcall function group headers (symbol-value variable)))
        result)
-    (setq
-     result
-     (cond
-      ((eq filename 'default)
-       default-name)
-      ((eq filename t)
-       default-name)
-      (filename filename)
-      (t
-       (let* ((split-name (gnus-get-split-value gnus-split-methods))
-             (prompt
-              (format prompt
-                      (if (and gnus-number-of-articles-to-be-saved
-                               (> gnus-number-of-articles-to-be-saved 1))
-                          (format "these %d articles"
-                                  gnus-number-of-articles-to-be-saved)
-                        "this article")))
-             (file
-              ;; Let the split methods have their say.
-              (cond
-               ;; No split name was found.
-               ((null split-name)
-                (read-file-name
-                 (concat prompt " (default "
-                         (file-name-nondirectory default-name) ") ")
-                 (file-name-directory default-name)
-                 default-name))
-               ;; A single group name is returned.
-               ((stringp split-name)
-                (setq default-name
-                      (funcall function split-name headers
-                               (symbol-value variable)))
-                (read-file-name
-                 (concat prompt " (default "
-                         (file-name-nondirectory default-name) ") ")
-                 (file-name-directory default-name)
-                 default-name))
-               ;; A single split name was found
-               ((= 1 (length split-name))
-                (let* ((name (expand-file-name
-                              (car split-name) gnus-article-save-directory))
-                       (dir (cond ((file-directory-p name)
-                                   (file-name-as-directory name))
-                                  ((file-exists-p name) name)
-                                  (t gnus-article-save-directory))))
-                  (read-file-name
-                   (concat prompt " (default " name ") ")
-                   dir name)))
-               ;; A list of splits was found.
-               (t
-                (setq split-name (nreverse split-name))
-                (let (result)
-                  (let ((file-name-history
-                         (nconc split-name file-name-history)))
-                    (setq result
-                          (expand-file-name
-                           (read-file-name
-                            (concat prompt " (`M-p' for defaults) ")
-                            gnus-article-save-directory
-                            (car split-name))
-                           gnus-article-save-directory)))
-                  (car (push result file-name-history)))))))
-        ;; Create the directory.
-        (gnus-make-directory (file-name-directory file))
-        ;; If we have read a directory, we append the default file name.
-        (when (file-directory-p file)
-          (setq file (concat (file-name-as-directory file)
-                             (file-name-nondirectory default-name))))
-        ;; Possibly translate some characters.
-        (nnheader-translate-file-chars file)))))
+    (setq result
+         (expand-file-name
+          (cond
+           ((eq filename 'default)
+            default-name)
+           ((eq filename t)
+            default-name)
+           (filename filename)
+           (t
+            (let* ((split-name (gnus-get-split-value gnus-split-methods))
+                   (prompt
+                    (format prompt
+                            (if (and gnus-number-of-articles-to-be-saved
+                                     (> gnus-number-of-articles-to-be-saved 1))
+                                (format "these %d articles"
+                                        gnus-number-of-articles-to-be-saved)
+                              "this article")))
+                   (file
+                    ;; Let the split methods have their say.
+                    (cond
+                     ;; No split name was found.
+                     ((null split-name)
+                      (read-file-name
+                       (concat prompt " (default "
+                               (file-name-nondirectory default-name) ") ")
+                       (file-name-directory default-name)
+                       default-name))
+                     ;; A single group name is returned.
+                     ((stringp split-name)
+                      (setq default-name
+                            (funcall function split-name headers
+                                     (symbol-value variable)))
+                      (read-file-name
+                       (concat prompt " (default "
+                               (file-name-nondirectory default-name) ") ")
+                       (file-name-directory default-name)
+                       default-name))
+                     ;; A single split name was found
+                     ((= 1 (length split-name))
+                      (let* ((name (expand-file-name
+                                    (car split-name)
+                                    gnus-article-save-directory))
+                             (dir (cond ((file-directory-p name)
+                                         (file-name-as-directory name))
+                                        ((file-exists-p name) name)
+                                        (t gnus-article-save-directory))))
+                        (read-file-name
+                         (concat prompt " (default " name ") ")
+                         dir name)))
+                     ;; A list of splits was found.
+                     (t
+                      (setq split-name (nreverse split-name))
+                      (let (result)
+                        (let ((file-name-history
+                               (nconc split-name file-name-history)))
+                          (setq result
+                                (expand-file-name
+                                 (read-file-name
+                                  (concat prompt " (`M-p' for defaults) ")
+                                  gnus-article-save-directory
+                                  (car split-name))
+                                 gnus-article-save-directory)))
+                        (car (push result file-name-history)))))))
+              ;; Create the directory.
+              (gnus-make-directory (file-name-directory file))
+      ;; If we have read a directory, we append the default file name.
+              (when (file-directory-p file)
+                (setq file (expand-file-name (file-name-nondirectory
+                                              default-name)
+                                             (file-name-as-directory file))))
+              ;; Possibly translate some characters.
+              (nnheader-translate-file-chars file))))))
     (gnus-make-directory (file-name-directory result))
     (set variable result)))
 
@@ -2585,17 +2746,6 @@ If variable `gnus-use-long-file-name' is non-nil, it is
        default
       (or last-file default))))
 
-(defun gnus-Plain-save-name (newsgroup headers &optional last-file)
-  "Generate file name from NEWSGROUP, HEADERS, and optional LAST-FILE.
-If variable `gnus-use-long-file-name' is non-nil, it is
-~/News/News.group.  Otherwise, it is like ~/News/news/group/news."
-  (or last-file
-      (expand-file-name
-       (if (gnus-use-long-file-name 'not-save)
-          (gnus-capitalize-newsgroup newsgroup)
-        (concat (gnus-newsgroup-directory-form newsgroup) "/news"))
-       gnus-article-save-directory)))
-
 (defun gnus-plain-save-name (newsgroup headers &optional last-file)
   "Generate file name from NEWSGROUP, HEADERS, and optional LAST-FILE.
 If variable `gnus-use-long-file-name' is non-nil, it is
@@ -2604,9 +2754,82 @@ If variable `gnus-use-long-file-name' is non-nil, it is
       (expand-file-name
        (if (gnus-use-long-file-name 'not-save)
           newsgroup
-        (concat (gnus-newsgroup-directory-form newsgroup) "/news"))
+        (expand-file-name "news" (gnus-newsgroup-directory-form newsgroup)))
        gnus-article-save-directory)))
 
+(defun article-verify-x-pgp-sig ()
+  "Verify X-PGP-Sig."
+  (interactive)
+  (if (gnus-buffer-live-p gnus-original-article-buffer)
+      (let ((sig (with-current-buffer gnus-original-article-buffer
+                  (gnus-fetch-field "X-PGP-Sig")))
+           items info headers)
+       (when (and sig 
+                  mml2015-use
+                  (mml2015-clear-verify-function))
+         (with-temp-buffer
+           (insert-buffer gnus-original-article-buffer)
+           (setq items (split-string sig))
+           (message-narrow-to-head)
+           (let ((inhibit-point-motion-hooks t)
+                 (case-fold-search t))
+             ;; Don't verify multiple headers.
+             (setq headers (mapconcat (lambda (header)
+                                        (concat header ": " 
+                                                (mail-fetch-field header) "\n"))
+                                      (split-string (nth 1 items) ",") "")))
+           (delete-region (point-min) (point-max))
+           (insert "-----BEGIN PGP SIGNED MESSAGE-----\n\n")
+           (insert "X-Signed-Headers: " (nth 1 items) "\n")
+           (insert headers)
+           (widen)
+           (forward-line)
+           (while (not (eobp))
+             (if (looking-at "^-")
+                 (insert "- "))
+             (forward-line))
+           (insert "\n-----BEGIN PGP SIGNATURE-----\n")
+           (insert "Version: " (car items) "\n\n")
+           (insert (mapconcat 'identity (cddr items) "\n"))
+           (insert "\n-----END PGP SIGNATURE-----\n")
+           (let ((mm-security-handle (list (format "multipart/signed"))))
+             (mml2015-clean-buffer)
+             (let ((coding-system-for-write (or gnus-newsgroup-charset
+                                                'iso-8859-1)))
+               (funcall (mml2015-clear-verify-function)))
+             (setq info 
+                   (or (mm-handle-multipart-ctl-parameter 
+                        mm-security-handle 'gnus-details)
+                       (mm-handle-multipart-ctl-parameter 
+                        mm-security-handle 'gnus-info)))))
+         (when info
+           (let (buffer-read-only bface eface)
+             (save-restriction
+               (message-narrow-to-head)
+               (goto-char (point-max))
+               (forward-line -1)
+               (setq bface (get-text-property (gnus-point-at-bol) 'face)
+                     eface (get-text-property (1- (gnus-point-at-eol)) 'face))
+               (message-remove-header "X-Gnus-PGP-Verify")
+               (if (re-search-forward "^X-PGP-Sig:" nil t)
+                   (forward-line)
+                 (goto-char (point-max)))
+               (narrow-to-region (point) (point))
+               (insert "X-Gnus-PGP-Verify: " info "\n")
+               (goto-char (point-min))
+               (forward-line)
+               (while (not (eobp))
+                 (if (not (looking-at "^[ \t]"))
+                     (insert " "))
+                 (forward-line))
+               ;; Do highlighting.
+               (goto-char (point-min))
+               (when (looking-at "\\([^:]+\\): *")
+                 (put-text-property (match-beginning 1) (1+ (match-end 1))
+                                    'face bface)
+                 (put-text-property (match-end 0) (point-max)
+                                    'face eface)))))))))
+
 (eval-and-compile
   (mapcar
    (lambda (func)
@@ -2616,18 +2839,18 @@ If variable `gnus-use-long-file-name' is non-nil, it is
                 gfunc (cdr func))
         (setq afunc func
               gfunc (intern (format "gnus-%s" func))))
-       (fset gfunc
-            (if (not (fboundp afunc))
-                nil
-              `(lambda (&optional interactive &rest args)
-                 ,(documentation afunc t)
-                 (interactive (list t))
-                 (save-excursion
-                   (set-buffer gnus-article-buffer)
-                   (if interactive
-                       (call-interactively ',afunc)
-                     (apply ',afunc args))))))))
+       (defalias gfunc
+        (if (fboundp afunc)
+          `(lambda (&optional interactive &rest args)
+             ,(documentation afunc t)
+             (interactive (list t))
+             (save-excursion
+               (set-buffer gnus-article-buffer)
+               (if interactive
+                   (call-interactively ',afunc)
+                 (apply ',afunc args))))))))
    '(article-hide-headers
+     article-verify-x-pgp-sig
      article-hide-boring-headers
      article-toggle-headers
      article-treat-overstrike
@@ -2636,7 +2859,9 @@ If variable `gnus-use-long-file-name' is non-nil, it is
      article-remove-cr
      article-display-x-face
      article-de-quoted-unreadable
+     article-de-base64-unreadable
      article-decode-HZ
+     article-wash-html
      article-hide-list-identifiers
      article-hide-pgp
      article-strip-banner
@@ -2687,6 +2912,8 @@ If variable `gnus-use-long-file-name' is non-nil, it is
   ">" end-of-buffer
   "\C-c\C-i" gnus-info-find-node
   "\C-c\C-b" gnus-bug
+  "\C-hk" gnus-article-describe-key
+  "\C-hc" gnus-article-describe-key-briefly
 
   "\C-d" gnus-article-read-summary-keys
   "\M-*" gnus-article-read-summary-keys
@@ -2717,6 +2944,9 @@ If variable `gnus-use-long-file-name' is non-nil, it is
            (decf c))
          keys))))
 
+(eval-when-compile 
+  (defvar gnus-article-commands-menu))
+
 (defun gnus-article-make-menu-bar ()
   (gnus-turn-off-edit-menu 'article)
   (unless (boundp 'gnus-article-article-menu)
@@ -2746,7 +2976,12 @@ If variable `gnus-use-long-file-name' is non-nil, it is
       (define-key gnus-article-mode-map [menu-bar post]
        (cons "Post" gnus-summary-post-menu)))
 
-    (gnus-run-hooks 'gnus-article-menu-hook)))
+    (gnus-run-hooks 'gnus-article-menu-hook))
+  ;; Add the menu.
+  (when (boundp 'gnus-article-commands-menu)
+    (easy-menu-add gnus-article-commands-menu gnus-article-mode-map))
+  (when (boundp 'gnus-summary-post-menu)
+    (easy-menu-add gnus-summary-post-menu gnus-article-mode-map)))
 
 (defun gnus-article-mode ()
   "Major mode for displaying an article.
@@ -2782,6 +3017,8 @@ commands:
   (make-local-variable 'gnus-article-decoded-p)
   (make-local-variable 'gnus-article-mime-handle-alist)
   (make-local-variable 'gnus-article-wash-types)
+  (make-local-variable 'gnus-article-charset)
+  (make-local-variable 'gnus-article-ignored-charsets)
   (gnus-set-default-directory)
   (buffer-disable-undo)
   (setq buffer-read-only t)
@@ -2810,6 +3047,7 @@ commands:
     ;; Init original article buffer.
     (save-excursion
       (set-buffer (gnus-get-buffer-create gnus-original-article-buffer))
+      (set-buffer-multibyte nil)
       (setq major-mode 'gnus-original-article-mode)
       (make-local-variable 'gnus-original-article))
     (if (get-buffer name)
@@ -2860,12 +3098,7 @@ commands:
     (mime-display-message mime-message-structure
                          gnus-article-buffer nil gnus-article-mode-map)
     (when all-headers
-      (gnus-article-hide-headers nil -1))
-    )
-  ;; `mime-display-message' changes current buffer to `gnus-article-buffer'.
-  (make-local-variable 'mime-button-mother-dispatcher)
-  (setq mime-button-mother-dispatcher
-       (function gnus-article-push-button))
+      (gnus-article-hide-headers nil -1)))
   (run-hooks 'gnus-mime-article-prepare-hook))
 
 (defun gnus-article-display-traditional-message ()
@@ -2997,6 +3230,8 @@ If ALL-HEADERS is non-nil, no headers are hidden."
                (gnus-set-global-variables)
                (setq gnus-have-all-headers
                      (or all-headers gnus-show-all-headers))))
+           (save-excursion
+             (gnus-configure-windows 'article))
            (when (or (numberp article)
                      (stringp article))
              (gnus-article-prepare-display)
@@ -3161,12 +3396,15 @@ value of the variable `gnus-show-mime' is non-nil."
   '((gnus-article-press-button "\r" "Toggle Display")
     (gnus-mime-view-part "v" "View Interactively...")
     (gnus-mime-view-part-as-type "t" "View As Type...")
+    (gnus-mime-view-part-as-charset "C" "View As charset...")
     (gnus-mime-save-part "o" "Save...")
+    (gnus-mime-save-part-and-strip "\C-o" "Save and Strip")
     (gnus-mime-copy-part "c" "View As Text, In Other Buffer")
     (gnus-mime-inline-part "i" "View As Text, In This Buffer")
     (gnus-mime-internalize-part "E" "View Internally")
     (gnus-mime-externalize-part "e" "View Externally")
-    (gnus-mime-pipe-part "|" "Pipe To Command...")))
+    (gnus-mime-pipe-part "|" "Pipe To Command...")
+    (gnus-mime-action-on-part "." "Take action on the part")))
 
 (defun gnus-article-mime-part-status ()
   (with-current-buffer gnus-article-buffer
@@ -3175,22 +3413,21 @@ value of the variable `gnus-show-mime' is non-nil."
          (format " (%d parts)" (length (mime-entity-children entity)))
        ""))))
 
-(defvar gnus-mime-button-map nil)
-(unless gnus-mime-button-map
-  (setq gnus-mime-button-map (make-sparse-keymap))
-  (set-keymap-parent gnus-mime-button-map gnus-article-mode-map)
-  (define-key gnus-mime-button-map gnus-mouse-2 'gnus-article-push-button)
-  (define-key gnus-mime-button-map gnus-down-mouse-3 'gnus-mime-button-menu)
-  (mapcar (lambda (c)
-           (define-key gnus-mime-button-map (cadr c) (car c)))
-         gnus-mime-button-commands))
+(defvar gnus-mime-button-map
+  (let ((map (make-sparse-keymap)))
+    (set-keymap-parent map gnus-article-mode-map)
+    (define-key map gnus-mouse-2 'gnus-article-push-button)
+    (define-key map gnus-down-mouse-3 'gnus-mime-button-menu)
+    (dolist (c gnus-mime-button-commands)
+      (define-key map (cadr c) (car c)))
+    map))
 
 (defun gnus-mime-button-menu (event)
   "Construct a context-sensitive menu of MIME commands."
   (interactive "e")
-  (save-excursion
+  (save-window-excursion
     (let ((pos (event-start event)))
-      (set-buffer (window-buffer (posn-window pos)))
+      (select-window (posn-window pos))
       (goto-char (posn-point pos))
       (gnus-article-check-buffer)
       (let ((response (x-popup-menu
@@ -3199,7 +3436,7 @@ value of the variable `gnus-show-mime' is non-nil."
                                           (cons (caddr c) (car c)))
                                         gnus-mime-button-commands))))))
        (if response
-           (funcall response))))))
+           (call-interactively response))))))
 
 (defun gnus-mime-view-all-parts (&optional handles)
   "View all the MIME parts."
@@ -3209,11 +3446,73 @@ value of the variable `gnus-show-mime' is non-nil."
     (let ((handles (or handles gnus-article-mime-handles))
          (mail-parse-charset gnus-newsgroup-charset)
          (mail-parse-ignored-charsets 
-          (save-excursion (set-buffer gnus-summary-buffer)
-                          gnus-newsgroup-ignored-charsets)))
-      (if (stringp (car handles))
-         (gnus-mime-view-all-parts (cdr handles))
-       (mapcar 'mm-display-part handles)))))
+          (with-current-buffer gnus-summary-buffer
+            gnus-newsgroup-ignored-charsets)))
+      (mm-remove-parts handles)
+      (goto-char (point-min))
+      (or (search-forward "\n\n") (goto-char (point-max)))
+      (let (buffer-read-only)
+       (delete-region (point) (point-max)))
+      (mm-display-parts handles))))
+
+(defun gnus-mime-save-part-and-strip ()
+  "Save the MIME part under point then replace it with an external body."
+  (interactive)
+  (gnus-article-check-buffer)
+  (let* ((data (get-text-property (point) 'gnus-data)) 
+        (file (mm-save-part data))
+        param)
+    (when file
+      (with-current-buffer (mm-handle-buffer data)
+       (erase-buffer)
+       (insert "Content-Type: " (mm-handle-media-type data))
+       (mml-insert-parameter-string (cdr (mm-handle-type data))
+                                    '(charset))
+       (insert "\n")
+       (insert "Content-ID: " (message-make-message-id) "\n")
+       (insert "Content-Transfer-Encoding: binary\n")
+       (insert "\n"))
+      (setcdr data
+             (cdr (mm-make-handle nil 
+                                  `("message/external-body"
+                                    (access-type . "LOCAL-FILE")
+                                    (name . ,file)))))
+      (set-buffer gnus-summary-buffer)
+      (gnus-article-edit-article
+       `(lambda () 
+          (erase-buffer)
+          (let ((mail-parse-charset (or gnus-article-charset 
+                                        ',gnus-newsgroup-charset))
+                (mail-parse-ignored-charsets 
+                 (or gnus-article-ignored-charsets
+                     ',gnus-newsgroup-ignored-charsets))
+                (mbl mml-buffer-list))
+            (setq mml-buffer-list nil)
+            (insert-buffer gnus-original-article-buffer)
+            (mime-to-mml gnus-article-mime-handles)
+            (setq gnus-article-mime-handles nil)
+            (make-local-hook 'kill-buffer-hook)
+            (let ((mbl1 mml-buffer-list))
+              (setq mml-buffer-list mbl)
+              (set (make-local-variable 'mml-buffer-list) mbl1))
+            (add-hook 'kill-buffer-hook 'mml-destroy-buffers t t)))
+       `(lambda (no-highlight)
+         (let ((mail-parse-charset (or gnus-article-charset
+                                       ',gnus-newsgroup-charset))
+               (message-options message-options)
+               (message-options-set-recipient)
+               (mail-parse-ignored-charsets  
+                (or gnus-article-ignored-charsets
+                    ',gnus-newsgroup-ignored-charsets)))
+          (mml-to-mime)
+          (mml-destroy-buffers)
+          (remove-hook 'kill-buffer-hook 
+                       'mml-destroy-buffers t)
+          (kill-local-variable 'mml-buffer-list))
+         (gnus-summary-edit-article-done
+          ,(or (mail-header-references gnus-current-headers) "")
+          ,(gnus-group-read-only-p) 
+          ,gnus-summary-buffer no-highlight))))))
 
 (defun gnus-mime-save-part ()
   "Save the MIME part under point."
@@ -3249,7 +3548,7 @@ value of the variable `gnus-show-mime' is non-nil."
   (interactive
    (list (completing-read
          "View as MIME type: "
-         (mapcar (lambda (i) (list i i)) (mailcap-mime-types))
+         (mapcar #'list (mailcap-mime-types))
          nil nil
          (gnus-mime-view-part-as-type-internal))))
   (gnus-article-check-buffer)
@@ -3287,28 +3586,63 @@ value of the variable `gnus-show-mime' is non-nil."
       (setq buffer-file-name nil))
     (goto-char (point-min))))
 
-(defun gnus-mime-inline-part (&optional handle)
+(defun gnus-mime-inline-part (&optional handle arg)
   "Insert the MIME part under point into the current buffer."
-  (interactive)
+  (interactive (list nil current-prefix-arg))
   (gnus-article-check-buffer)
   (let* ((handle (or handle (get-text-property (point) 'gnus-data)))
-        contents
+        contents charset
         (b (point))
         buffer-read-only)
-    (if (mm-handle-undisplayer handle)
+    (if (and (not arg) (mm-handle-undisplayer handle))
        (mm-remove-part handle)
       (setq contents (mm-get-part handle))
+      (cond
+       ((not arg)
+       (setq charset (or (mail-content-type-get
+                          (mm-handle-type handle) 'charset)
+                         gnus-newsgroup-charset)))
+       ((numberp arg)
+       (if (mm-handle-undisplayer handle)
+           (mm-remove-part handle))
+       (setq charset
+             (or (cdr (assq arg 
+                            gnus-summary-show-article-charset-alist))
+                 (read-coding-system "Charset: ")))))
       (forward-line 2)
-      (mm-insert-inline handle contents)
+      (mm-insert-inline handle
+                       (if (and charset 
+                                (setq charset (mm-charset-to-coding-system 
+                                               charset))
+                                (not (eq charset 'ascii)))
+                           (mm-decode-coding-string contents charset)
+                         contents))
       (goto-char b))))
 
+(defun gnus-mime-view-part-as-charset (&optional handle arg)
+  "Insert the MIME part under point into the current buffer."
+  (interactive (list nil current-prefix-arg))
+  (gnus-article-check-buffer)
+  (let* ((handle (or handle (get-text-property (point) 'gnus-data)))
+        contents charset
+        (b (point))
+        buffer-read-only)
+    (if (mm-handle-undisplayer handle)
+       (mm-remove-part handle))
+    (let ((gnus-newsgroup-charset
+          (or (cdr (assq arg 
+                         gnus-summary-show-article-charset-alist))
+              (read-coding-system "Charset: ")))
+         (gnus-newsgroup-ignored-charsets 'gnus-all))
+      (gnus-article-press-button))))
+
 (defun gnus-mime-externalize-part (&optional handle)
   "View the MIME part under point with an external viewer."
   (interactive)
   (gnus-article-check-buffer)
   (let* ((handle (or handle (get-text-property (point) 'gnus-data)))
         (mm-user-display-methods nil)
-        (mm-inline-large-images nil)
+        (mm-inlined-types nil)
         (mail-parse-charset gnus-newsgroup-charset)
         (mail-parse-ignored-charsets 
          (save-excursion (set-buffer gnus-summary-buffer)
@@ -3333,6 +3667,16 @@ In no internal viewer is available, use an external viewer."
        (mm-remove-part handle)
       (mm-display-part handle))))
 
+(defun gnus-mime-action-on-part (&optional action)
+  "Do something with the MIME attachment at \(point\)."
+  (interactive
+   (list (completing-read "Action: " gnus-mime-action-alist)))
+  (gnus-article-check-buffer)
+  (let ((action-pair (assoc action gnus-mime-action-alist)))
+    (if action-pair
+       (funcall (cdr action-pair)))))
+
+
 (defun gnus-article-part-wrapper (n function)
   (save-current-buffer
     (set-buffer gnus-article-buffer)
@@ -3362,6 +3706,11 @@ In no internal viewer is available, use an external viewer."
   (interactive "p")
   (gnus-article-part-wrapper n 'gnus-mime-copy-part))
 
+(defun gnus-article-view-part-as-charset (n)
+  "Copy MIME part N, which is the numerical prefix."
+  (interactive "p")
+  (gnus-article-part-wrapper n 'gnus-mime-view-part-as-charset))
+
 (defun gnus-article-externalize-part (n)
   "View MIME part N externally, which is the numerical prefix."
   (interactive "p")
@@ -3408,6 +3757,11 @@ In no internal viewer is available, use an external viewer."
          (when (eq (gnus-mm-display-part handle) 'internal)
            (gnus-set-window-start)))))))
 
+(defsubst gnus-article-mime-total-parts ()
+  (if (bufferp (car gnus-article-mime-handles))
+      1 ;; single part
+    (1- (length gnus-article-mime-handles))))
+
 (defun gnus-mm-display-part (handle)
   "Display HANDLE and fix MIME button."
   (let ((id (get-text-property (point) 'gnus-part))
@@ -3441,7 +3795,7 @@ In no internal viewer is available, use an external viewer."
                      (narrow-to-region (point) (point-max))
                      (gnus-treat-article
                       nil id
-                      (1- (length gnus-article-mime-handles))
+                      (gnus-article-mime-total-parts)
                       (mm-handle-media-type handle)))))
              (select-window window))))
       (goto-char point)
@@ -3462,6 +3816,8 @@ In no internal viewer is available, use an external viewer."
                                    'name)
             (mail-content-type-get (mm-handle-disposition handle)
                                    'filename)
+            (mail-content-type-get (mm-handle-type handle)
+                                   'url)
             ""))
        (gnus-tmp-type (mm-handle-media-type handle))
        (gnus-tmp-description
@@ -3493,21 +3849,30 @@ In no internal viewer is available, use an external viewer."
                 article-type annotation
                 gnus-data ,handle))
     (setq e (point))
-    (widget-convert-button 'link b e
-                          :mime-handle handle
-                          :action 'gnus-widget-press-button
-                          :button-keymap gnus-mime-button-map
-                          :help-echo
-                          (lambda (widget)
-                            ;; Needed to properly clear the message
-                            ;; due to a bug in wid-edit
-                            (setq help-echo-owns-message t)
-                            (format
-                             "Click to %s the MIME part; %s for more options"
-                             (if (mm-handle-displayed-p
-                                  (widget-get widget :mime-handle))
-                                 "hide" "show")
-                             (if gnus-xemacs "button3" "mouse-3"))))))
+    (widget-convert-button
+     'link b e
+     :mime-handle handle
+     :action 'gnus-widget-press-button
+     :button-keymap gnus-mime-button-map
+     :help-echo
+     (lambda (widget/window &optional overlay pos)
+       ;; Needed to properly clear the message due to a bug in
+       ;; wid-edit (XEmacs only).
+       (if (boundp 'help-echo-owns-message)
+          (setq help-echo-owns-message t))
+       (format
+       "%S: %s the MIME part; %S: more options"
+       (aref gnus-mouse-2 0)
+       ;; XEmacs will get a single widget arg; Emacs 21 will get
+       ;; window, overlay, position.
+       (if (mm-handle-displayed-p
+            (if overlay
+                (with-current-buffer (gnus-overlay-buffer overlay)
+                  (widget-get (widget-at (gnus-overlay-start overlay))
+                              :mime-handle))
+              (widget-get widget/window :mime-handle)))
+           "hide" "show")
+       (aref gnus-down-mouse-3 0))))))
 
 (defun gnus-widget-press-button (elems el)
   (goto-char (widget-get elems :from))
@@ -3584,7 +3949,19 @@ In no internal viewer is available, use an external viewer."
         (not gnus-mime-display-multipart-as-mixed))
     ;;;!!!We should find the start part, but we just default
     ;;;!!!to the first part.
-    (gnus-mime-display-part (cadr handle)))
+    ;;(gnus-mime-display-part (cadr handle))
+    ;;;!!! Most multipart/related is an HTML message plus images.
+    ;;;!!! Unfortunately we are unable to let W3 display those 
+    ;;;!!! included images, so we just display it as a mixed multipart.
+    (gnus-mime-display-mixed (cdr handle)))
+   ((equal (car handle) "multipart/signed")
+    (or (memq 'signed gnus-article-wash-types)
+       (push 'signed gnus-article-wash-types))
+    (gnus-mime-display-security handle))
+   ((equal (car handle) "multipart/encrypted")
+    (or (memq 'encrypted gnus-article-wash-types)
+       (push 'encrypted gnus-article-wash-types))
+    (gnus-mime-display-security handle))
    ;; Other multiparts are handled like multipart/mixed.
    (t
     (gnus-mime-display-mixed (cdr handle)))))
@@ -3620,21 +3997,23 @@ In no internal viewer is available, use an external viewer."
            (setq display t)
          (when (equal (mm-handle-media-supertype handle) "text")
            (setq text t)))
-       (let ((id (1+ (length gnus-article-mime-handle-alist))))
+       (let ((id (1+ (length gnus-article-mime-handle-alist)))
+             beg)
          (push (cons id handle) gnus-article-mime-handle-alist)
          (when (or (not display)
                    (not (gnus-unbuttonized-mime-type-p type)))
            ;(gnus-article-insert-newline)
            (gnus-insert-mime-button
             handle id (list (or display (and not-attachment text))))
-           (gnus-article-insert-newline)
-           ;(gnus-article-insert-newline)
-           (setq move t)))
-       (let ((beg (point)))
+           (gnus-article-insert-newline) 
+           ;(gnus-article-insert-newline) 
+           ;; Remember modify the number of forward lines.
+           (setq move t))
+         (setq beg (point))
          (cond
           (display
            (when move
-             (forward-line -2)
+             (forward-line -1)
              (setq beg (point)))
            (let ((mail-parse-charset gnus-newsgroup-charset)
                  (mail-parse-ignored-charsets 
@@ -3646,7 +4025,7 @@ In no internal viewer is available, use an external viewer."
            (goto-char (point-max)))
           ((and text not-attachment)
            (when move
-             (forward-line -2)
+             (forward-line -1)
              (setq beg (point)))
            (gnus-article-insert-newline)
            (mm-insert-inline handle (mm-get-part handle))
@@ -3656,8 +4035,8 @@ In no internal viewer is available, use an external viewer."
            (save-restriction
              (narrow-to-region beg (point))
              (gnus-treat-article
-              nil (length gnus-article-mime-handle-alist)
-              (1- (length gnus-article-mime-handles))
+              nil id 
+              (gnus-article-mime-total-parts)
               (mm-handle-media-type handle)))))))))
 
 (defun gnus-unbuttonized-mime-type-p (type)
@@ -3695,6 +4074,7 @@ In no internal viewer is available, use an external viewer."
        (unless (setq not-pref (cadr (member preferred ihandles)))
          (setq not-pref (car ihandles)))
        (when (or ibegend
+                 (not preferred)
                  (not (gnus-unbuttonized-mime-type-p
                        "multipart/alternative")))
          (gnus-add-text-properties
@@ -3759,7 +4139,7 @@ In no internal viewer is available, use an external viewer."
                  (narrow-to-region (car begend) (point-max))
                  (gnus-treat-article
                   nil (length gnus-article-mime-handle-alist)
-                  (1- (length gnus-article-mime-handles))
+                  (gnus-article-mime-total-parts)
                   (mm-handle-media-type handle))))))
          (goto-char (point-max))
          (setcdr begend (point-marker)))))
@@ -3775,19 +4155,21 @@ In no internal viewer is available, use an external viewer."
          (boring (memq 'boring-headers gnus-article-wash-types))
          (pgp (memq 'pgp gnus-article-wash-types))
          (pem (memq 'pem gnus-article-wash-types))
+         (signed (memq 'signed gnus-article-wash-types))
+         (encrypted (memq 'encrypted gnus-article-wash-types))
          (signature (memq 'signature gnus-article-wash-types))
          (overstrike (memq 'overstrike gnus-article-wash-types))
          (emphasis (memq 'emphasis gnus-article-wash-types)))
       (format "%c%c%c%c%c%c%c"
              (if cite ?c ? )
              (if (or headers boring) ?h ? )
-             (if (or pgp pem) ?p ? )
+             (if (or pgp pem signed encrypted) ?p ? )
              (if signature ?s ? )
              (if overstrike ?o ? )
              (if gnus-show-mime ?m ? )
              (if emphasis ?e ? )))))
 
-(fset 'gnus-article-hide-headers-if-wanted 'gnus-article-maybe-hide-headers)
+(defalias 'gnus-article-hide-headers-if-wanted 'gnus-article-maybe-hide-headers)
 
 (defun gnus-article-maybe-hide-headers ()
   "Hide unwanted headers if `gnus-have-all-headers' is nil.
@@ -4026,26 +4408,58 @@ Argument LINES specifies lines to be scrolled down."
           (switch-to-buffer summary 'norecord))
         (setq in-buffer (current-buffer))
         ;; We disable the pick minor mode commands.
-        (if (setq func (let (gnus-pick-mode)
-                         (lookup-key (current-local-map) keys)))
+        (if (and (setq func (let (gnus-pick-mode)
+                             (lookup-key (current-local-map) keys)))
+                (functionp func))
             (progn
               (call-interactively func)
-              (setq new-sum-point (point)))
-          (ding))
-        (when (eq in-buffer (current-buffer))
-          (setq selected (gnus-summary-select-article))
-          (set-buffer obuf)
-          (unless not-restore-window
-            (set-window-configuration owin))
-          (when (eq selected 'old)
-           (article-goto-body)
-            (set-window-start (get-buffer-window (current-buffer))
-                              1)
-            (set-window-point (get-buffer-window (current-buffer))
-                              (point)))
-          (let ((win (get-buffer-window gnus-article-current-summary)))
-            (when win
-              (set-window-point win new-sum-point))))))))
+              (setq new-sum-point (point))
+             (when (eq in-buffer (current-buffer))
+               (setq selected (gnus-summary-select-article))
+               (set-buffer obuf)
+               (unless not-restore-window
+                 (set-window-configuration owin))
+               (when (eq selected 'old)
+                 (article-goto-body)
+                 (set-window-start (get-buffer-window (current-buffer))
+                                   1)
+                 (set-window-point (get-buffer-window (current-buffer))
+                                   (point)))
+               (let ((win (get-buffer-window gnus-article-current-summary)))
+                 (when win
+                   (set-window-point win new-sum-point))))    )
+         (switch-to-buffer gnus-article-buffer)
+          (ding))))))
+
+(defun gnus-article-describe-key (key)
+  "Display documentation of the function invoked by KEY.  KEY is a string."
+  (interactive "kDescribe key: ")
+  (gnus-article-check-buffer)
+  (if (eq (key-binding key) 'gnus-article-read-summary-keys)
+      (save-excursion
+       (set-buffer gnus-article-current-summary)
+       (let (gnus-pick-mode)
+         (push (elt key 0) unread-command-events)
+         (setq key (if (featurep 'xemacs)
+                       (events-to-keys (read-key-sequence "Describe key: "))
+                     (read-key-sequence "Describe key: "))))
+       (describe-key key))
+    (describe-key key)))
+
+(defun gnus-article-describe-key-briefly (key &optional insert)
+  "Display documentation of the function invoked by KEY.  KEY is a string."
+  (interactive "kDescribe key: \nP")
+  (gnus-article-check-buffer)
+  (if (eq (key-binding key) 'gnus-article-read-summary-keys)
+      (save-excursion
+       (set-buffer gnus-article-current-summary)
+       (let (gnus-pick-mode)
+         (push (elt key 0) unread-command-events)
+         (setq key (if (featurep 'xemacs)
+                       (events-to-keys (read-key-sequence "Describe key: "))
+                     (read-key-sequence "Describe key: "))))
+       (describe-key-briefly key insert))
+    (describe-key-briefly key insert)))
 
 (defun gnus-article-hide (&optional arg force)
   "Hide all the gruft in the current article.
@@ -4120,11 +4534,11 @@ If given a prefix, show the hidden text instead."
                               gnus-newsgroup-name)))
                  (when (and (eq (car method) 'nneething)
                             (vectorp header))
-                   (let ((dir (concat
+                   (let ((dir (expand-file-name
+                               (mail-header-subject header)
                                (file-name-as-directory
                                 (or (cadr (assq 'nneething-address method))
-                                    (nth 1 method)))
-                               (mail-header-subject header))))
+                                    (nth 1 method))))))
                      (when (file-directory-p dir)
                        (setq article 'nneething)
                        (gnus-group-enter-directory dir))))))))
@@ -4163,10 +4577,10 @@ If given a prefix, show the hidden text instead."
                                gnus-refer-article-method))
                  result
                  (buffer-read-only nil))
-             (setq methods
-                   (if (listp methods)
-                       methods
-                     (list methods)))
+             (if (or (not (listp methods))
+                     (and (symbolp (car methods))
+                          (assq (car methods) nnoo-definition-alist)))
+                 (setq methods (list methods)))
              (when (and (null gnus-override-method)
                         methods)
                (setq gnus-override-method (pop methods)))
@@ -4205,6 +4619,7 @@ If given a prefix, show the hidden text instead."
          (if (get-buffer gnus-original-article-buffer)
              (set-buffer gnus-original-article-buffer)
            (set-buffer (gnus-get-buffer-create gnus-original-article-buffer))
+           (set-buffer-multibyte nil)
            (buffer-disable-undo)
            (setq major-mode 'gnus-original-article-mode)
            (setq buffer-read-only t))
@@ -4312,27 +4727,6 @@ groups."
 (defun gnus-article-edit-done (&optional arg)
   "Update the article edits and exit."
   (interactive "P")
-  (save-excursion
-    (save-restriction
-      (widen)
-      (when (article-goto-body)
-       (let ((lines (count-lines (point) (point-max)))
-             (length (- (point-max) (point)))
-             (case-fold-search t)
-             (body (copy-marker (point))))
-         (goto-char (point-min))
-         (when (re-search-forward "^content-length:[ \t]\\([0-9]+\\)" body t)
-           (delete-region (match-beginning 1) (match-end 1))
-           (insert (number-to-string length)))
-         (goto-char (point-min))
-         (when (re-search-forward
-                "^x-content-length:[ \t]\\([0-9]+\\)" body t)
-           (delete-region (match-beginning 1) (match-end 1))
-           (insert (number-to-string length)))
-         (goto-char (point-min))
-         (when (re-search-forward "^lines:[ \t]\\([0-9]+\\)" body t)
-           (delete-region (match-beginning 1) (match-end 1))
-           (insert (number-to-string lines)))))))
   (let ((func gnus-article-edit-done-function)
        (buf (current-buffer))
        (start (window-start)))
@@ -4363,7 +4757,7 @@ groups."
   "Exit the article editing without updating."
   (interactive)
   ;; We remove all text props from the article buffer.
-  (let ((buf (format "%s" (buffer-string)))
+  (let ((buf (buffer-substring-no-properties (point-min) (point-max)))
        (curbuf (current-buffer))
        (p (point))
        (window-start (window-start)))
@@ -4477,7 +4871,7 @@ after replacing with the original article."
 
 ;;; Internal Variables:
 
-(defcustom gnus-button-url-regexp "\\b\\(\\(s?https?\\|ftp\\|file\\|gopher\\|news\\|telnet\\|wais\\|mailto\\):\\(//[-a-zA-Z0-9_.]+:[0-9]*\\)?\\([-a-zA-Z0-9_=!?#$@~`%&*+|\\/:;.,]\\|\\w\\)+\\([-a-zA-Z0-9_=#$@~`%&*+|\\/]\\|\\w\\)\\)\\|[-a-zA-Z0-9_]+\\.[-a-zA-Z0-9_]+\\(\\.[-a-zA-Z0-9_]+[-a-zA-Z0-9_/]+\\)+"
+(defcustom gnus-button-url-regexp "\\b\\(\\(www\\.\\|\\(s?https?\\|ftp\\|file\\|gopher\\|news\\|telnet\\|wais\\|mailto\\):\\)\\(//[-a-zA-Z0-9_.]+:[0-9]*\\)?\\([-a-zA-Z0-9_=!?#$@~`%&*+|\\/:;.,]\\|\\w\\)+\\([-a-zA-Z0-9_=#$@~`%&*+|\\/]\\|\\w\\)\\)"
   "Regular expression that matches URLs."
   :group 'gnus-article-buttons
   :type 'regexp)
@@ -4807,7 +5201,11 @@ specified by `gnus-button-alist'."
    (nconc (and gnus-article-mouse-face
               (list gnus-mouse-face-prop gnus-article-mouse-face))
          (list 'gnus-callback fun)
-         (and data (list 'gnus-data data)))))
+         (and data (list 'gnus-data data))))
+  (widget-convert-button 'link from to :action 'gnus-widget-press-button
+                        ;; Quote `:button-keymap' for Mule 2.3
+                        ;; but it won't work.
+                        ':button-keymap gnus-widget-button-keymap))
 
 ;;; Internal functions:
 
@@ -4823,9 +5221,15 @@ specified by `gnus-button-alist'."
          (inhibit-point-motion-hooks t)
          (limit (next-single-property-change end 'mime-view-entity
                                              nil (point-max))))
-      (if (get-text-property end 'invisible)
-         (gnus-article-unhide-text end limit)
-       (gnus-article-hide-text end limit gnus-hidden-properties)))))
+      (if (text-property-any end limit 'article-type 'signature)
+         (gnus-remove-text-properties-when
+          'article-type 'signature end limit
+          (cons 'article-type (cons 'signature
+                                    gnus-hidden-properties)))
+       (gnus-add-text-properties-when
+        'article-type nil end limit
+        (cons 'article-type (cons 'signature
+                                  gnus-hidden-properties)))))))
 
 (defun gnus-button-entry ()
   ;; Return the first entry in `gnus-button-alist' matching this place.
@@ -4959,18 +5363,14 @@ forbidden in URL encoding."
        (message-goto-subject)))))
 
 (defun gnus-button-mailto (address)
-  ;; Mail to ADDRESS.
+  "Mail to ADDRESS."
   (set-buffer (gnus-copy-article-buffer))
-  (gnus-setup-message 'reply
-    (message-reply address)))
+  (message-reply address))
 
-(defun gnus-button-reply (address)
-  ;; Reply to ADDRESS.
-  (gnus-setup-message 'reply
-    (message-reply address)))
+(defalias 'gnus-button-reply 'message-reply)
 
 (defun gnus-button-embedded-url (address)
-  "Browse ADDRESS."
+  "Activate ADDRESS with `browse-url'."
   (browse-url (gnus-strip-whitespace address)))
 
 (defun gnus-article-smiley-display ()
@@ -5153,11 +5553,13 @@ For example:
                             'mime-view-entity entity))))))
 
 ;; Dynamic variables.
-(defvar part-number)
-(defvar total-parts)
-(defvar type)
-(defvar condition)
-(defvar length)
+(eval-when-compile
+  (defvar part-number)
+  (defvar total-parts)
+  (defvar type)
+  (defvar condition)
+  (defvar length))
+
 (defun gnus-treat-predicate (val)
   (cond
    ((null val)
@@ -5195,6 +5597,235 @@ For example:
    (t
     (error "%S is not a valid value" val))))
 
+(defun gnus-article-encrypt-body (protocol &optional n)
+  "Encrypt the article body."
+  (interactive 
+   (list
+    (or gnus-article-encrypt-protocol
+       (completing-read "Encrypt protocol: "
+                        gnus-article-encrypt-protocol-alist 
+                        nil t))
+    current-prefix-arg))
+  (let ((func (cdr (assoc protocol gnus-article-encrypt-protocol-alist))))
+    (unless func
+      (error (format "Can't find the encrypt protocol %s" protocol)))
+    (if (equal gnus-newsgroup-name "nndraft:drafts")
+       (error "Can't encrypt the article in group nndraft:drafts."))
+    (if (equal gnus-newsgroup-name "nndraft:queue")
+       (error "Don't encrypt the article in group nndraft:queue."))
+    (gnus-summary-iterate n
+      (save-excursion
+       (set-buffer gnus-summary-buffer)
+       (let ((mail-parse-charset gnus-newsgroup-charset)
+             (mail-parse-ignored-charsets gnus-newsgroup-ignored-charsets)
+             (summary-buffer gnus-summary-buffer)
+             references point)
+         (gnus-set-global-variables)
+         (when (gnus-group-read-only-p)
+           (error "The current newsgroup does not support article encrypt"))
+         (gnus-summary-show-article t)
+         (setq references
+             (or (mail-header-references gnus-current-headers) ""))
+         (set-buffer gnus-article-buffer)
+         (let* ((buffer-read-only nil)
+                (headers
+                 (mapcar (lambda (field)
+                           (and (save-restriction 
+                                  (message-narrow-to-head)
+                                  (goto-char (point-min))
+                                  (search-forward field nil t))
+                                (prog2
+                                    (message-narrow-to-field)
+                                    (buffer-substring (point-min) (point-max))
+                                  (delete-region (point-min) (point-max))
+                                  (widen))))
+                         '("Content-Type:" "Content-Transfer-Encoding:"
+                           "Content-Disposition:"))))
+           (message-narrow-to-head)
+           (message-remove-header "MIME-Version")
+           (goto-char (point-max))
+           (setq point (point))
+           (insert (apply 'concat headers))
+           (widen)
+           (narrow-to-region point (point-max))
+           (let ((message-options message-options))
+             (message-options-set 'message-sender user-mail-address)
+             (message-options-set 'message-recipients user-mail-address)
+             (message-options-set 'message-sign-encrypt 'not)
+             (funcall func))
+           (goto-char (point-min))
+           (insert "MIME-Version: 1.0\n")
+           (widen)
+           (gnus-summary-edit-article-done
+            references nil summary-buffer t))
+         (when gnus-keep-backlog
+           (gnus-backlog-remove-article
+            (car gnus-article-current) (cdr gnus-article-current)))
+         (save-excursion
+           (when (get-buffer gnus-original-article-buffer)
+             (set-buffer gnus-original-article-buffer)
+             (setq gnus-original-article nil)))
+         (when gnus-use-cache
+           (gnus-cache-update-article
+            (car gnus-article-current) (cdr gnus-article-current))))))))
+
+(defvar gnus-mime-security-button-line-format "%{%([[%t:%i]%D]%)%}\n"
+  "The following specs can be used:
+%t  The security MIME type
+%i  Additional info
+%d  Details
+%D  Details if button is pressed")
+
+(defvar gnus-mime-security-button-end-line-format "%{%([[End of %t]%D]%)%}\n"
+  "The following specs can be used:
+%t  The security MIME type
+%i  Additional info
+%d  Details
+%D  Details if button is pressed")
+
+(defvar gnus-mime-security-button-line-format-alist
+  '((?t gnus-tmp-type ?s)
+    (?i gnus-tmp-info ?s)
+    (?d gnus-tmp-details ?s)
+    (?D gnus-tmp-pressed-details ?s)))
+
+(defvar gnus-mime-security-button-map
+  (let ((map (make-sparse-keymap)))
+    (set-keymap-parent map gnus-article-mode-map)
+    (define-key map gnus-mouse-2 'gnus-article-push-button)
+    (define-key map "\r" 'gnus-article-press-button)
+    map))
+
+(defvar gnus-mime-security-details-buffer nil)
+
+(defvar gnus-mime-security-button-pressed nil)
+
+(defvar gnus-mime-security-show-details-inline t
+  "If non-nil, show details in the article buffer.")
+
+(defun gnus-mime-security-verify-or-decrypt (handle)
+  (mm-remove-parts (cdr handle))
+  (let ((region (mm-handle-multipart-ctl-parameter handle 'gnus-region))
+       buffer-read-only)
+    (when region 
+      (delete-region (car region) (cdr region))
+      (set-marker (car region) nil)
+      (set-marker (cdr region) nil)))
+  (with-current-buffer (mm-handle-multipart-original-buffer handle)
+    (let* ((mm-verify-option 'known)
+          (mm-decrypt-option 'known)
+          (nparts (mm-possibly-verify-or-decrypt (cdr handle) handle)))
+      (unless (eq nparts (cdr handle))
+       (mm-destroy-parts (cdr handle))
+       (setcdr handle nparts))))
+  (let ((point (point))
+       buffer-read-only)
+    (gnus-mime-display-security handle)
+    (goto-char point)))
+
+(defun gnus-mime-security-show-details (handle)
+  (let ((details (mm-handle-multipart-ctl-parameter handle 'gnus-details)))
+    (if details
+       (if gnus-mime-security-show-details-inline
+           (let ((gnus-mime-security-button-pressed t)
+                 (gnus-mime-security-button-line-format 
+                  (get-text-property (point) 'gnus-line-format))
+               buffer-read-only)
+             (forward-char -1)
+             (while (eq (get-text-property (point) 'gnus-line-format)
+                        gnus-mime-security-button-line-format)
+               (forward-char -1))
+             (forward-char)
+             (delete-region (point)
+                            (or (text-property-not-all 
+                                 (point) (point-max)
+                               'gnus-line-format   
+                               gnus-mime-security-button-line-format)
+                                (point-max)))
+             (gnus-insert-mime-security-button handle))
+         (if (gnus-buffer-live-p gnus-mime-security-details-buffer)
+             (with-current-buffer gnus-mime-security-details-buffer
+               (erase-buffer)
+               t)
+           (setq gnus-mime-security-details-buffer
+                 (gnus-get-buffer-create "*MIME Security Details*")))
+         (with-current-buffer gnus-mime-security-details-buffer
+           (insert details)
+           (goto-char (point-min)))
+         (pop-to-buffer gnus-mime-security-details-buffer))
+      (gnus-message 5 "No details."))))
+
+(defun gnus-mime-security-press-button (handle)
+  (if (mm-handle-multipart-ctl-parameter handle 'gnus-info)
+      (gnus-mime-security-show-details handle)
+    (gnus-mime-security-verify-or-decrypt handle)))
+
+(defun gnus-insert-mime-security-button (handle &optional displayed)
+  (let* ((protocol (mm-handle-multipart-ctl-parameter handle 'protocol))
+        (gnus-tmp-type
+         (concat 
+          (or (nth 2 (assoc protocol mm-verify-function-alist))
+              (nth 2 (assoc protocol mm-decrypt-function-alist))
+              "Unknown")
+          (if (equal (car handle) "multipart/signed")
+              " Signed" " Encrypted")
+          " Part"))
+        (gnus-tmp-info
+         (or (mm-handle-multipart-ctl-parameter handle 'gnus-info)
+             "Undecided"))
+        (gnus-tmp-details
+         (mm-handle-multipart-ctl-parameter handle 'gnus-details))
+        gnus-tmp-pressed-details
+        b e)
+    (setq gnus-tmp-details
+         (if gnus-tmp-details
+             (concat "\n" gnus-tmp-details) ""))
+    (setq gnus-tmp-pressed-details 
+         (if gnus-mime-security-button-pressed gnus-tmp-details ""))
+    (unless (bolp)
+      (insert "\n"))
+    (setq b (point))
+    (gnus-eval-format
+     gnus-mime-security-button-line-format 
+     gnus-mime-security-button-line-format-alist
+     `(local-map ,gnus-mime-security-button-map
+                keymap ,gnus-mime-security-button-map
+                gnus-callback gnus-mime-security-press-button
+                gnus-line-format ,gnus-mime-security-button-line-format 
+                article-type annotation
+                gnus-data ,handle))
+    (setq e (point))
+    (widget-convert-button
+     'link b e
+     :mime-handle handle
+     :action 'gnus-widget-press-button
+     :button-keymap gnus-mime-security-button-map
+     :help-echo
+     (lambda (widget/window &optional overlay pos)
+       ;; Needed to properly clear the message due to a bug in
+       ;; wid-edit (XEmacs only).
+       (if (boundp 'help-echo-owns-message)
+          (setq help-echo-owns-message t))
+       (format
+       "%S: show detail"
+       (aref gnus-mouse-2 0))))))
+
+(defun gnus-mime-display-security (handle)
+  (save-restriction
+    (narrow-to-region (point) (point))
+    (gnus-insert-mime-security-button handle)
+    (gnus-mime-display-mixed (cdr handle))
+    (unless (bolp)
+      (insert "\n"))
+    (let ((gnus-mime-security-button-line-format 
+          gnus-mime-security-button-end-line-format))
+      (gnus-insert-mime-security-button handle))
+    (mm-set-handle-multipart-parameter handle 'gnus-region 
+                                      (cons (set-marker (make-marker)
+                                                        (point-min))
+                                            (set-marker (make-marker)
+                                                        (point-max))))))
+
 
 ;;; @ for mime-view
 ;;;