* gnus-art.el (gnus-use-idna)
[gnus] / lisp / gnus-art.el
index c94f2b2..474830c 100644 (file)
@@ -10,7 +10,7 @@
 
 ;; GNU Emacs is free software; you can redistribute it and/or modify
 ;; it under the terms of the GNU General Public License as published by
-;; the Free Software Foundation; either version 2, or (at your option)
+;; the Free Software Foundation; either version 3, or (at your option)
 ;; any later version.
 
 ;; GNU Emacs is distributed in the hope that it will be useful,
@@ -661,13 +661,12 @@ non-nil.
 
 If the match is a string, it is used as a regexp match on the
 article.  If the match is a symbol, that symbol will be funcalled
-from the buffer of the article to be saved with the newsgroup as
-the parameter.  If it is a list, it will be evaled in the same
-buffer.
+from the buffer of the article to be saved with the newsgroup as the
+parameter.  If it is a list, it will be evaled in the same buffer.
 
-If this form or function returns a string, this string will be
-used as a possible file name; and if it returns a non-nil list,
-that list will be used as possible file names."
+If this form or function returns a string, this string will be used as a
+possible file name; and if it returns a non-nil list, that list will be
+used as possible file names."
   :group 'gnus-article-saving
   :type '(repeat (choice (list :value (fun) function)
                         (cons :value ("" "") regexp (repeat string))
@@ -763,7 +762,7 @@ Obsolete; use the face `gnus-signature' for customizations instead."
 (defface gnus-header-from
   '((((class color)
       (background dark))
-     (:foreground "spring green"))
+     (:foreground "PaleGreen1"))
     (((class color)
       (background light))
      (:foreground "red3"))
@@ -778,7 +777,7 @@ Obsolete; use the face `gnus-signature' for customizations instead."
 (defface gnus-header-subject
   '((((class color)
       (background dark))
-     (:foreground "SeaGreen3"))
+     (:foreground "SeaGreen1"))
     (((class color)
       (background light))
      (:foreground "red4"))
@@ -810,7 +809,7 @@ articles."
 (defface gnus-header-name
   '((((class color)
       (background dark))
-     (:foreground "SeaGreen"))
+     (:foreground "SpringGreen2"))
     (((class color)
       (background light))
      (:foreground "maroon"))
@@ -825,7 +824,7 @@ articles."
 (defface gnus-header-content
   '((((class color)
       (background dark))
-     (:foreground "forest green" :italic t))
+     (:foreground "SpringGreen1" :italic t))
     (((class color)
       (background light))
      (:foreground "indianred4" :italic t))
@@ -1117,10 +1116,7 @@ predicate.  See Info node `(gnus)Customizing Articles'."
   :type gnus-article-treat-head-custom)
 (put 'gnus-treat-buttonize-head 'highlight t)
 
-(defcustom gnus-treat-emphasize
-  (and (or window-system
-          (featurep 'xemacs))
-       50000)
+(defcustom gnus-treat-emphasize 50000
   "Emphasize text.
 Valid values are nil, t, `head', `first', `last', an integer or a
 predicate.  See Info node `(gnus)Customizing Articles'."
@@ -1416,9 +1412,9 @@ predicate.  See Info node `(gnus)Customizing Articles'."
              (executable-find "icontopbm")))
        'head)
   "Display X-Face headers.
-Valid values are nil, t, `head', `first', `last', an integer or a
-predicate.  See Info node `(gnus)Customizing Articles' and Info
-node `(gnus)X-Face' for details."
+Valid values are nil and `head'.
+See Info node `(gnus)Customizing Articles' and Info node
+`(gnus)X-Face' for details."
   :group 'gnus-article-treat
   :version "21.1"
   :link '(custom-manual "(gnus)Customizing Articles")
@@ -1519,11 +1515,12 @@ node `(gnus)Picons' for details."
 (put 'gnus-treat-newsgroups-picon 'highlight t)
 
 (defcustom gnus-treat-body-boundary
-  (if (and (eq window-system 'x)
-          (or gnus-treat-newsgroups-picon
-              gnus-treat-mail-picon
-              gnus-treat-from-picon))
-      'head nil)
+  (if (or gnus-treat-newsgroups-picon
+         gnus-treat-mail-picon
+         gnus-treat-from-picon)
+      ;; If there's much decoration, the user might prefer a boundery.
+      'head
+    nil)
   "Draw a boundary at the end of the headers.
 Valid values are nil and `head'.
 See Info node `(gnus)Customizing Articles' for details."
@@ -2338,9 +2335,9 @@ long lines iff arg is positive."
 (eval-when-compile
   (defvar gnus-face-properties-alist))
 
-(defun article-display-face ()
+(defun article-display-face (&optional force)
   "Display any Face headers in the header."
-  (interactive)
+  (interactive (list 'force))
   (let ((wash-face-p buffer-read-only))
     (gnus-with-article-headers
       ;; When displaying parts, this function can be called several times on
@@ -2350,7 +2347,8 @@ long lines iff arg is positive."
       ;; read-only.
       (if (and wash-face-p (memq 'face gnus-article-wash-types))
          (gnus-delete-images 'face)
-       (let (face faces from)
+       (let ((from (message-fetch-field "from"))
+             face faces)
          (save-current-buffer
            (when (and wash-face-p
                       (gnus-buffer-live-p gnus-original-article-buffer)
@@ -2358,16 +2356,22 @@ long lines iff arg is positive."
              (set-buffer gnus-original-article-buffer))
            (save-restriction
              (mail-narrow-to-head)
-             (while (gnus-article-goto-header "Face")
-               (push (mail-header-field-value) faces))))
+             (when (or force
+                       ;; Check whether this face is censored.
+                       (not (and gnus-article-x-face-too-ugly
+                                 (or from
+                                     (setq from (message-fetch-field "from")))
+                                 (string-match gnus-article-x-face-too-ugly
+                                               from))))
+               (while (gnus-article-goto-header "Face")
+                 (push (mail-header-field-value) faces)))))
          (when faces
            (goto-char (point-min))
-           (let ((from (gnus-article-goto-header "from"))
-                 png image)
-             (unless from
+           (let (png image)
+             (unless (setq from (gnus-article-goto-header "from"))
                (insert "From:")
                (setq from (point))
-               (insert "[no `from' set]\n"))
+               (insert " [no `from' set]\n"))
              (while faces
                (when (setq png (gnus-convert-face-to-png (pop faces)))
                  (setq image
@@ -2392,7 +2396,8 @@ long lines iff arg is positive."
          ;; instead.
          (gnus-delete-images 'xface)
        ;; Display X-Faces.
-       (let (x-faces from face)
+       (let ((from (message-fetch-field "from"))
+             x-faces face)
          (save-current-buffer
            (when (and wash-face-p
                       (gnus-buffer-live-p gnus-original-article-buffer)
@@ -2403,43 +2408,41 @@ long lines iff arg is positive."
              (set-buffer gnus-original-article-buffer))
            (save-restriction
              (mail-narrow-to-head)
-             (while (gnus-article-goto-header "X-Face")
-               (push (mail-header-field-value) x-faces))
-             (setq from (message-fetch-field "from"))))
-         ;; Sending multiple EOFs to xv doesn't work, so we only do a
-         ;; single external face.
-         (when (stringp gnus-article-x-face-command)
-           (setq x-faces (list (car x-faces))))
-         (when (and x-faces
-                    gnus-article-x-face-command
-                    (or force
-                        ;; Check whether this face is censored.
-                        (not gnus-article-x-face-too-ugly)
-                        (and from
-                             (not (string-match gnus-article-x-face-too-ugly
-                                                from)))))
-           (while (setq face (pop x-faces))
-             ;; We display the face.
-             (cond ((stringp gnus-article-x-face-command)
-                    ;; The command is a string, so we interpret the command
-                    ;; as a, well, command, and fork it off.
-                    (let ((process-connection-type nil))
-                      (gnus-set-process-query-on-exit-flag
-                       (start-process
-                        "article-x-face" nil shell-file-name
-                        shell-command-switch gnus-article-x-face-command)
-                       nil)
-                      (with-temp-buffer
-                        (insert face)
-                        (process-send-region "article-x-face"
-                                             (point-min) (point-max)))
-                      (process-send-eof "article-x-face")))
-                   ((functionp gnus-article-x-face-command)
-                    ;; The command is a lisp function, so we call it.
-                    (funcall gnus-article-x-face-command face))
-                   (t
-                    (error "%s is not a function"
-                           gnus-article-x-face-command))))))))))
+             (and gnus-article-x-face-command
+                  (or force
+                      ;; Check whether this face is censored.
+                      (not (and gnus-article-x-face-too-ugly
+                                (or from
+                                    (setq from (message-fetch-field "from")))
+                                (string-match gnus-article-x-face-too-ugly
+                                              from))))
+                  (while (gnus-article-goto-header "X-Face")
+                    (push (mail-header-field-value) x-faces)))))
+         (when x-faces
+           ;; We display the face.
+           (cond ((functionp gnus-article-x-face-command)
+                  ;; The command is a lisp function, so we call it.
+                  (mapc gnus-article-x-face-command x-faces))
+                 ((stringp gnus-article-x-face-command)
+                  ;; The command is a string, so we interpret the command
+                  ;; as a, well, command, and fork it off.
+                  (let ((process-connection-type nil))
+                    (gnus-set-process-query-on-exit-flag
+                     (start-process
+                      "article-x-face" nil shell-file-name
+                      shell-command-switch gnus-article-x-face-command)
+                     nil)
+                    ;; Sending multiple EOFs to xv doesn't work,
+                    ;; so we only do a single external face.
+                    (with-temp-buffer
+                      (insert (car x-faces))
+                      (process-send-region "article-x-face"
+                                           (point-min) (point-max)))
+                    (process-send-eof "article-x-face")))
+                 (t
+                  (error "`%s' set to `%s' is not a function"
+                         gnus-article-x-face-command
+                         'gnus-article-x-face-command)))))))))
 
 (defun article-decode-mime-words ()
   "Decode all MIME-encoded words in the article."
@@ -2526,44 +2529,31 @@ If PROMPT (the prefix), prompt for a coding system to use."
       (goto-char (setq end start)))))
 
 (defun article-decode-group-name ()
-  "Decode group names in `Newsgroups:'."
+  "Decode group names in Newsgroups, Followup-To and Xref headers."
   (let ((inhibit-point-motion-hooks t)
        (inhibit-read-only t)
-       (method (gnus-find-method-for-group gnus-newsgroup-name)))
+       (method (gnus-find-method-for-group gnus-newsgroup-name))
+       regexp)
     (when (and (or gnus-group-name-charset-method-alist
                   gnus-group-name-charset-group-alist)
               (gnus-buffer-live-p gnus-original-article-buffer))
       (save-restriction
        (article-narrow-to-head)
-       (with-current-buffer gnus-original-article-buffer
-         (goto-char (point-min)))
-       (while (re-search-forward
-               "^Newsgroups:\\(\\(.\\|\n[\t ]\\)*\\)\n[^\t ]" nil t)
-         (replace-match (save-match-data
-                          (gnus-decode-newsgroups
-                           ;; XXX how to use data in article buffer?
-                           (with-current-buffer gnus-original-article-buffer
-                             (re-search-forward
-                              "^Newsgroups:\\(\\(.\\|\n[\t ]\\)*\\)\n[^\t ]"
-                              nil t)
-                             (match-string 1))
-                           gnus-newsgroup-name method))
-                        t t nil 1))
-       (goto-char (point-min))
-       (with-current-buffer gnus-original-article-buffer
-         (goto-char (point-min)))
-       (while (re-search-forward
-               "^Followup-To:\\(\\(.\\|\n[\t ]\\)*\\)\n[^\t ]" nil t)
-         (replace-match (save-match-data
-                          (gnus-decode-newsgroups
-                           ;; XXX how to use data in article buffer?
-                           (with-current-buffer gnus-original-article-buffer
-                             (re-search-forward
-                              "^Followup-To:\\(\\(.\\|\n[\t ]\\)*\\)\n[^\t ]"
-                              nil t)
-                             (match-string 1))
-                           gnus-newsgroup-name method))
-                        t t nil 1))))))
+       (dolist (header '("Newsgroups" "Followup-To" "Xref"))
+         (with-current-buffer gnus-original-article-buffer
+           (goto-char (point-min)))
+         (setq regexp (concat "^" header
+                              ":\\([^\n]*\\(?:\n[\t ]+[^\n]+\\)*\\)\n"))
+         (while (re-search-forward regexp nil t)
+           (replace-match (save-match-data
+                            (gnus-decode-newsgroups
+                             ;; XXX how to use data in article buffer?
+                             (with-current-buffer gnus-original-article-buffer
+                               (re-search-forward regexp nil t)
+                               (match-string 1))
+                             gnus-newsgroup-name method))
+                          t t nil 1))
+         (goto-char (point-min)))))))
 
 (autoload 'idna-to-unicode "idna")
 
@@ -2813,8 +2803,37 @@ Recurse into multiparts."
                    (string-match "text/html" (car (mm-handle-type handle))))
               (let ((tmp-file (mm-make-temp-file
                                ;; Do we need to care for 8.3 filenames?
-                               "mm-" nil ".html")))
-                (mm-save-part-to-file handle tmp-file)
+                               "mm-" nil ".html"))
+                    (charset (mail-content-type-get (mm-handle-type handle)
+                                                    'charset)))
+                (if charset
+                    ;; Add a meta html tag to specify charset.
+                    (mm-with-unibyte-buffer
+                      (insert (with-current-buffer (mm-handle-buffer handle)
+                                (if (eq charset 'gnus-decoded)
+                                    (mm-encode-coding-string
+                                     (buffer-string)
+                                     (setq charset 'utf-8))
+                                  (buffer-string))))
+                      (setq charset (format "\
+<meta http-equiv=\"Content-Type\" content=\"text/html; charset=%s\">"
+                                            charset))
+                      (goto-char (point-min))
+                      (let ((case-fold-search t))
+                        (cond (;; Don't modify existing meta tag.
+                               (re-search-forward "\
+<meta[\t\n\r ]+http-equiv=\"content-type\"[^>]+>"
+                                                  nil t))
+                              ((re-search-forward "<head>[\t\n\r ]*" nil t)
+                               (insert charset "\n"))
+                              (t
+                               (re-search-forward "\
+<html\\(?:[\t\n\r ]+[^>]+\\|[\t\n\r ]*\\)>[\t\n\r ]*"
+                                                  nil t)
+                               (insert "<head>\n" charset "\n</head>\n"))))
+                      (mm-write-region (point-min) (point-max)
+                                       tmp-file nil nil nil 'binary t))
+                  (mm-save-part-to-file handle tmp-file))
                 (add-to-list 'gnus-article-browse-html-temp-list tmp-file)
                 (add-hook 'gnus-summary-prepare-exit-hook
                           'gnus-article-browse-delete-temp-files)
@@ -2840,7 +2859,10 @@ Warning: Spammers use links to images in HTML articles to verify
 whether you have read the message.  As
 `gnus-article-browse-html-article' passes the unmodified HTML
 content to the browser without eliminating these \"web bugs\" you
-should only use it for mails from trusted senders."
+should only use it for mails from trusted senders.
+
+If you alwasy want to display HTML part in the browser, set
+`mm-text-html-renderer' to nil."
   ;; Cf. `mm-w3m-safe-url-regexp'
   (interactive)
   (save-window-excursion
@@ -3966,7 +3988,7 @@ If variable `gnus-use-long-file-name' is non-nil, it is
       (canlock-verify gnus-original-article-buffer)))
 
 (eval-and-compile
-  (mapcar
+  (mapc
    (lambda (func)
      (let (afunc gfunc)
        (if (consp func)
@@ -4027,7 +4049,7 @@ If variable `gnus-use-long-file-name' is non-nil, it is
      article-emphasize
      article-treat-dumbquotes
      article-normalize-headers
-;;     (article-show-all . gnus-article-show-all-headers)
+     ;;(article-show-all . gnus-article-show-all-headers)
      )))
 \f
 ;;;
@@ -4143,7 +4165,8 @@ commands:
   (make-local-variable 'gnus-article-image-alist)
   (make-local-variable 'gnus-article-charset)
   (make-local-variable 'gnus-article-ignored-charsets)
-  ;; Prevent recent Emacsen from displaying non-break space as "\ ".
+  ;; Prevent Emacs 22 from displaying non-break space with `nobreak-space'
+  ;; face.
   (set (make-local-variable 'nobreak-char-display) nil)
   (setq cursor-in-non-selected-windows nil)
   (setq truncate-lines gnus-article-truncate-lines)
@@ -4221,17 +4244,19 @@ Internal variable.")
 ;; Set article window start at LINE, where LINE is the number of lines
 ;; from the head of the article.
 (defun gnus-article-set-window-start (&optional line)
-  (set-window-start
-   (gnus-get-buffer-window gnus-article-buffer t)
-   (save-excursion
-     (set-buffer gnus-article-buffer)
-     (goto-char (point-min))
-     (if (not line)
-        (point-min)
-       (gnus-message 6 "Moved to bookmark")
-       (search-forward "\n\n" nil t)
-       (forward-line line)
-       (point)))))
+  (let ((article-window (gnus-get-buffer-window gnus-article-buffer t)))
+    (when article-window
+      (set-window-start
+       article-window
+       (save-excursion
+        (set-buffer gnus-article-buffer)
+        (goto-char (point-min))
+        (if (not line)
+            (point-min)
+          (gnus-message 6 "Moved to bookmark")
+          (search-forward "\n\n" nil t)
+          (forward-line line)
+          (point)))))))
 
 (defun gnus-article-prepare (article &optional all-headers header)
   "Prepare ARTICLE in article mode buffer.
@@ -4362,6 +4387,90 @@ If ALL-HEADERS is non-nil, no headers are hidden."
       (funcall gnus-display-mime-function))
     (gnus-run-hooks 'gnus-article-prepare-hook)))
 
+;;;
+;;; Gnus Sticky Article Mode
+;;;
+
+(define-derived-mode gnus-sticky-article-mode gnus-article-mode "StickyArticle"
+  "Mode for sticky articles."
+  ;; Release bindings that won't work.
+  (substitute-key-definition 'gnus-article-read-summary-keys 'undefined
+                            gnus-sticky-article-mode-map)
+  (substitute-key-definition 'gnus-article-refer-article 'undefined
+                            gnus-sticky-article-mode-map)
+  (dolist (k '("e" "h" "s" "F" "R"))
+    (define-key gnus-sticky-article-mode-map k nil))
+  (define-key gnus-sticky-article-mode-map "k" 'gnus-kill-sticky-article-buffer)
+  (define-key gnus-sticky-article-mode-map "q" 'bury-buffer)
+  (define-key gnus-sticky-article-mode-map "\C-hc" 'describe-key-briefly)
+  (define-key gnus-sticky-article-mode-map "\C-hk" 'describe-key))
+
+(defun gnus-sticky-article (arg)
+  "Make the current article sticky.
+If a prefix ARG is given, ask for a name for this sticky article buffer."
+  (interactive "P")
+  (gnus-summary-show-thread)
+  (gnus-summary-select-article nil nil 'pseudo)
+  (let (new-art-buf-name)
+    (gnus-eval-in-buffer-window gnus-article-buffer
+      (setq new-art-buf-name
+           (concat
+            "*Sticky Article: "
+            (if arg
+                (read-from-minibuffer "Sticky article buffer name: ")
+              (gnus-with-article-headers
+                (gnus-article-goto-header "subject")
+                (setq new-art-buf-name
+                      (buffer-substring-no-properties
+                       (line-beginning-position) (line-end-position)))
+                (goto-char (point-min))
+                (gnus-article-goto-header "from")
+                (setq new-art-buf-name
+                      (concat
+                       new-art-buf-name ", "
+                       (buffer-substring-no-properties
+                        (line-beginning-position) (line-end-position))))
+                (goto-char (point-min))
+                (gnus-article-goto-header "date")
+                (setq new-art-buf-name
+                      (concat
+                       new-art-buf-name ", "
+                       (buffer-substring-no-properties
+                        (line-beginning-position) (line-end-position))))))
+            "*"))
+      (if (and (gnus-buffer-live-p new-art-buf-name)
+              (with-current-buffer new-art-buf-name
+                (eq major-mode 'gnus-sticky-article-mode)))
+         (switch-to-buffer new-art-buf-name)
+       (setq new-art-buf-name (rename-buffer new-art-buf-name t)))
+      (gnus-sticky-article-mode))
+    (setq gnus-article-buffer new-art-buf-name))
+  (gnus-summary-recenter)
+  (gnus-summary-position-point))
+
+(defun gnus-kill-sticky-article-buffer (&optional buffer)
+  "Kill the given sticky article BUFFER.
+If none is given, assume the current buffer and kill it if it has
+`gnus-sticky-article-mode'."
+  (interactive)
+  (unless buffer
+    (setq buffer (current-buffer)))
+  (with-current-buffer buffer
+    (when (eq major-mode 'gnus-sticky-article-mode)
+      (gnus-kill-buffer buffer))))
+
+(defun gnus-kill-sticky-article-buffers (arg)
+  "Kill all sticky article buffers.
+If a prefix ARG is given, ask for confirmation."
+  (interactive "P")
+  (dolist (buf (gnus-buffers))
+    (with-current-buffer buf
+      (when (eq major-mode 'gnus-sticky-article-mode)
+       (if (not arg)
+           (gnus-kill-buffer buf)
+         (when (yes-or-no-p (concat "Kill buffer " (buffer-name buf) "? "))
+           (gnus-kill-buffer buf)))))))
+
 ;;;
 ;;; Gnus MIME viewing functions
 ;;;
@@ -4532,7 +4641,11 @@ and `gnus-mime-delete-part', and not provided at run-time normally."
     (gnus-summary-show-article)
     (when (and current-id (integerp gnus-auto-select-part))
       (gnus-article-jump-to-part
-       (+ current-id gnus-auto-select-part)))))
+       (if (text-property-any (point-min) (point-max)
+                             'gnus-part (+ current-id gnus-auto-select-part))
+          (+ current-id gnus-auto-select-part)
+        (with-current-buffer gnus-article-buffer
+          (length gnus-article-mime-handle-alist)))))))
 
 (defun gnus-mime-replace-part (file)
   "Replace MIME part under point with an external body."
@@ -4669,7 +4782,11 @@ Deleting parts may malfunction or destroy the article; continue? "))
                ;; Content-Disposition: attachment; filename=...
                (cdr (assq 'filename (cdr (mm-handle-disposition handle))))))
         (def-type (and name (mm-default-file-encoding name))))
-    (and def-type (cons def-type 0))))
+    (or (and def-type (cons def-type 0))
+       (and handle
+            (equal (mm-handle-media-supertype handle) "text")
+            '("text/plain" . 0))
+       '("application/octet-stream" . 0))))
 
 (defun gnus-mime-view-part-as-type (&optional mime-type pred)
   "Choose a MIME media type, and view the part as such.
@@ -4703,6 +4820,8 @@ available media-types."
                            (mm-handle-id handle)))
       (setq gnus-article-mime-handles
            (mm-merge-handles gnus-article-mime-handles handle))
+      (when (mm-handle-displayed-p handle)
+       (mm-remove-part handle))
       (gnus-mm-display-part handle))))
 
 (defun gnus-mime-copy-part (&optional handle arg)
@@ -4845,6 +4964,21 @@ Compressed files like .gz and .bz2 are decompressed."
           (mm-string-to-multibyte contents)))
        (goto-char b)))))
 
+(defun gnus-mime-strip-charset-parameters (handle)
+  "Strip charset parameters from HANDLE."
+  (if (stringp (car handle))
+      (mapc #'gnus-mime-strip-charset-parameters (cdr handle))
+    (let* ((type (mm-handle-type (if (equal (mm-handle-media-type handle)
+                                           "message/external-body")
+                                    (progn
+                                      (unless (mm-handle-cache handle)
+                                        (mm-extern-cache-contents handle))
+                                      (mm-handle-cache handle))
+                                  handle)))
+          (charset (assq 'charset (cdr type))))
+      (when charset
+       (delq charset type)))))
+
 (defun gnus-mime-view-part-as-charset (&optional handle arg)
   "Insert the MIME part under point into the current buffer using the
 specified charset."
@@ -4853,25 +4987,35 @@ specified charset."
   (let ((handle (or handle (get-text-property (point) 'gnus-data)))
        (fun (get-text-property (point) 'gnus-callback))
        (gnus-newsgroup-ignored-charsets 'gnus-all)
-       gnus-newsgroup-charset type charset)
+       gnus-newsgroup-charset form preferred parts)
     (when handle
-      (if (mm-handle-undisplayer handle)
-         (mm-remove-part handle))
-      (when fun
-       (setq gnus-newsgroup-charset
-             (or (cdr (assq arg gnus-summary-show-article-charset-alist))
-                 (mm-read-coding-system "Charset: ")))
-       ;; Strip the charset parameter from `handle'.
-       (setq type (mm-handle-type
-                   (if (equal (mm-handle-media-type handle)
-                              "message/external-body")
-                       (progn
-                         (unless (mm-handle-cache handle)
-                           (mm-extern-cache-contents handle))
-                         (mm-handle-cache handle))
-                     handle))
-             charset (assq 'charset (cdr type)))
-       (delq charset type)
+      (when (prog1
+               (and fun
+                    (setq gnus-newsgroup-charset
+                          (or (cdr (assq
+                                    arg
+                                    gnus-summary-show-article-charset-alist))
+                              (mm-read-coding-system "Charset: "))))
+             (if (mm-handle-undisplayer handle)
+                 (mm-remove-part handle)))
+       (gnus-mime-strip-charset-parameters handle)
+       (when (and (consp (setq form (cdr-safe fun)))
+                  (setq form (ignore-errors
+                               (assq 'gnus-mime-display-alternative form)))
+                  (setq preferred (caddr form))
+                  (progn
+                    (when (eq (car preferred) 'quote)
+                      (setq preferred (cadr preferred)))
+                    (not (equal preferred
+                                (get-text-property (point) 'gnus-data))))
+                  (setq parts (get-text-property (point) 'gnus-part))
+                  (setq parts (cdr (assq parts
+                                         gnus-article-mime-handle-alist)))
+                  (equal (mm-handle-media-type parts) "multipart/alternative")
+                  (setq parts (reverse (cdr parts))))
+         (setcar (cddr form)
+                 (list 'quote (or (cadr (member preferred parts))
+                                  (car parts)))))
        (funcall fun handle)))))
 
 (defun gnus-mime-view-part-externally (&optional handle)
@@ -4890,7 +5034,7 @@ specified charset."
          (mm-enable-external t))
     (if (not (stringp method))
        (gnus-mime-view-part-as-type
-        nil (lambda (type) (stringp (mailcap-mime-info type))))
+        nil (lambda (types) (stringp (mailcap-mime-info (car types)))))
       (when handle
        (if (mm-handle-undisplayer handle)
            (mm-remove-part handle)
@@ -4911,7 +5055,7 @@ If no internal viewer is available, use an external viewer."
         (inhibit-read-only t))
     (if (not (mm-inlinable-p handle))
         (gnus-mime-view-part-as-type
-         nil (lambda (type) (mm-inlinable-p handle type)))
+         nil (lambda (types) (mm-inlinable-p handle (car types))))
       (when handle
        (if (mm-handle-undisplayer handle)
            (mm-remove-part handle)
@@ -4941,6 +5085,25 @@ If INTERACTIVE, call FUNCTION interactivly."
       (unless (with-current-buffer gnus-summary-buffer
                (eq gnus-current-article (gnus-summary-article-number)))
        (error "You should select the right article first"))
+      (if n
+         (setq n (prefix-numeric-value n))
+       (let ((pt (point)))
+         (setq n (or (get-text-property pt 'gnus-part)
+                     (and (not (bobp))
+                          (get-text-property (1- pt) 'gnus-part))
+                     (get-text-property (prog2
+                                            (forward-line 1)
+                                            (point)
+                                          (goto-char pt))
+                                        'gnus-part)
+                     (get-text-property
+                      (or (and (setq pt (previous-single-property-change
+                                         pt 'gnus-part))
+                               (1- pt))
+                          (next-single-property-change (point) 'gnus-part)
+                          (point))
+                      'gnus-part)
+                     1))))
       ;; Check whether the specified part exists.
       (when (> n (length gnus-article-mime-handle-alist))
        (error "No such part")))
@@ -4991,62 +5154,62 @@ If INTERACTIVE, call FUNCTION interactivly."
 
 (defun gnus-article-pipe-part (n)
   "Pipe MIME part N, which is the numerical prefix."
-  (interactive "p")
+  (interactive "P")
   (gnus-article-part-wrapper n 'mm-pipe-part))
 
 (defun gnus-article-save-part (n)
   "Save MIME part N, which is the numerical prefix."
-  (interactive "p")
+  (interactive "P")
   (gnus-article-part-wrapper n 'mm-save-part))
 
 (defun gnus-article-interactively-view-part (n)
   "View MIME part N interactively, which is the numerical prefix."
-  (interactive "p")
+  (interactive "P")
   (gnus-article-part-wrapper n 'mm-interactively-view-part))
 
 (defun gnus-article-copy-part (n)
   "Copy MIME part N, which is the numerical prefix."
-  (interactive "p")
+  (interactive "P")
   (gnus-article-part-wrapper n 'gnus-mime-copy-part))
 
 (defun gnus-article-view-part-as-charset (n)
   "View MIME part N using a specified charset.
 N is the numerical prefix."
-  (interactive "p")
+  (interactive "P")
   (gnus-article-part-wrapper n 'gnus-mime-view-part-as-charset))
 
 (defun gnus-article-view-part-externally (n)
   "View MIME part N externally, which is the numerical prefix."
-  (interactive "p")
+  (interactive "P")
   (gnus-article-part-wrapper n 'gnus-mime-view-part-externally))
 
 (defun gnus-article-inline-part (n)
   "Inline MIME part N, which is the numerical prefix."
-  (interactive "p")
+  (interactive "P")
   (gnus-article-part-wrapper n 'gnus-mime-inline-part))
 
 (defun gnus-article-save-part-and-strip (n)
   "Save MIME part N and replace it with an external body.
 N is the numerical prefix."
-  (interactive "p")
+  (interactive "P")
   (gnus-article-part-wrapper n 'gnus-mime-save-part-and-strip t))
 
 (defun gnus-article-replace-part (n)
   "Replace MIME part N with an external body.
 N is the numerical prefix."
-  (interactive "p")
+  (interactive "P")
   (gnus-article-part-wrapper n 'gnus-mime-replace-part t t))
 
 (defun gnus-article-delete-part (n)
   "Delete MIME part N and add some information about the removed part.
 N is the numerical prefix."
-  (interactive "p")
+  (interactive "P")
   (gnus-article-part-wrapper n 'gnus-mime-delete-part t))
 
 (defun gnus-article-view-part-as-type (n)
   "Choose a MIME media type, and view part N as such.
 N is the numerical prefix."
-  (interactive "p")
+  (interactive "P")
   (gnus-article-part-wrapper n 'gnus-mime-view-part-as-type t))
 
 (defun gnus-article-mime-match-handle-first (condition)
@@ -5178,8 +5341,8 @@ N is the numerical prefix."
                (1- (point))
              (point)))
     (when gnus-article-button-face
-      (gnus-overlay-put (gnus-make-overlay b e)
-                        'face gnus-article-button-face))
+      (gnus-overlay-put (gnus-make-overlay b e nil t)
+                       'face gnus-article-button-face))
     (widget-convert-button
      'link b e
      :mime-handle handle
@@ -5407,8 +5570,9 @@ If displaying \"text/html\" is discouraged \(see
            (gnus-article-insert-newline)
            (mm-insert-inline
             handle
-            (let ((charset (mail-content-type-get (mm-handle-type handle)
-                                                  'charset)))
+            (let ((charset (or (mail-content-type-get (mm-handle-type handle)
+                                                      'charset)
+                               (and (equal type "text/calendar") 'utf-8))))
               (cond ((not charset)
                      (mm-string-as-multibyte (mm-get-part handle)))
                     ((eq charset 'gnus-decoded)
@@ -5421,10 +5585,21 @@ If displaying \"text/html\" is discouraged \(see
          (save-excursion
            (save-restriction
              (narrow-to-region beg (point))
-             (gnus-treat-article
-              nil id
-              (gnus-article-mime-total-parts)
-              (mm-handle-media-type handle)))))))))
+             (if (eq handle gnus-article-mime-handles)
+                 ;; The format=flowed case.
+                 (gnus-treat-article nil 1 1 (mm-handle-media-type handle))
+               ;; Don't count signature parts that are never displayed.
+               ;; The part number should be re-calculated supposing this
+               ;; might be a message/rfc822 part.
+               (let (handles)
+                 (dolist (part gnus-article-mime-handles)
+                   (unless (or (stringp part)
+                               (equal (car (mm-handle-type part))
+                                      "application/pgp-signature"))
+                     (push part handles)))
+                 (gnus-treat-article
+                  nil (length (memq handle handles)) (length handles)
+                  (mm-handle-media-type handle)))))))))))
 
 (defun gnus-unbuttonized-mime-type-p (type)
   "Say whether TYPE is to be unbuttonized."
@@ -5756,10 +5931,16 @@ If end of article, return non-nil.  Otherwise return nil.
 Argument LINES specifies lines to be scrolled up."
   (interactive "p")
   (move-to-window-line -1)
-  (if (save-excursion
-       (end-of-line)
-       (and (pos-visible-in-window-p)  ;Not continuation line.
-            (>= (1+ (point)) (point-max)))) ;Allow for trailing newline.
+  (if (and (not (and gnus-article-over-scroll
+                    (> (count-lines (window-start) (point-max))
+                       (+ (or lines (1- (window-height)))
+                          (or (and (boundp 'scroll-margin)
+                                   (symbol-value 'scroll-margin))
+                              0)))))
+          (save-excursion
+            (end-of-line)
+            (and (pos-visible-in-window-p)     ;Not continuation line.
+                 (>= (1+ (point)) (point-max))))) ;Allow for trailing newline.
       ;; Nothing in this page.
       (if (or (not gnus-page-broken)
              (save-excursion
@@ -5819,7 +6000,14 @@ Argument LINES specifies lines to be scrolled down."
       (progn
        (gnus-narrow-to-page -1)        ;Go to previous page.
        (goto-char (point-max))
-       (recenter -1))
+       (recenter (if gnus-article-over-scroll
+                     (if lines
+                         (max (+ lines (or (and (boundp 'scroll-margin)
+                                                (symbol-value 'scroll-margin))
+                                           0))
+                              3)
+                       (- (window-height) 2))
+                   -1)))
     (prog1
        (condition-case ()
            (let ((scroll-in-place nil))
@@ -5890,7 +6078,7 @@ not have a face in `gnus-article-boring-faces'."
   "Execute the last keystroke in the summary buffer."
   (interactive)
   (let (func)
-    (pop-to-buffer gnus-article-current-summary 'norecord)
+    (pop-to-buffer gnus-article-current-summary)
     (setq func (lookup-key (current-local-map) (this-command-keys)))
     (call-interactively func)))
 
@@ -5924,64 +6112,94 @@ not have a face in `gnus-article-boring-faces'."
 
     (message "")
 
-    (if (or (member keys nosaves)
-           (member keys nosave-but-article)
-           (member keys nosave-in-article))
-       (let (func)
-         (save-window-excursion
-           (pop-to-buffer gnus-article-current-summary 'norecord)
-           ;; We disable the pick minor mode commands.
-           (let (gnus-pick-mode)
-             (setq func (lookup-key (current-local-map) keys))))
-         (if (or (not func)
-                 (numberp func))
-             (ding)
-           (unless (member keys nosave-in-article)
-             (set-buffer gnus-article-current-summary))
-           (call-interactively func)
-           (setq new-sum-point (point)))
-         (when (member keys nosave-but-article)
-           (pop-to-buffer gnus-article-buffer 'norecord)))
+    (cond
+     ((eq (aref keys (1- (length keys))) ?\C-h)
+      (with-current-buffer gnus-article-current-summary
+       (describe-bindings (substring keys 0 -1))))
+     ((or (member keys nosaves)
+         (member keys nosave-but-article)
+         (member keys nosave-in-article))
+      (let (func)
+       (save-window-excursion
+         (pop-to-buffer gnus-article-current-summary)
+         ;; We disable the pick minor mode commands.
+         (let (gnus-pick-mode)
+           (setq func (lookup-key (current-local-map) keys))))
+       (if (or (not func)
+               (numberp func))
+           (ding)
+         (unless (member keys nosave-in-article)
+           (set-buffer gnus-article-current-summary))
+         (call-interactively func)
+         (setq new-sum-point (point)))
+       (when (member keys nosave-but-article)
+         (pop-to-buffer gnus-article-buffer))))
+     (t
       ;; These commands should restore window configuration.
       (let ((obuf (current-buffer))
            (owin (current-window-configuration))
-           (opoint (point))
-           win func in-buffer selected new-sum-start new-sum-hscroll)
+           win func in-buffer selected new-sum-start new-sum-hscroll err)
        (cond (not-restore-window
-              (pop-to-buffer gnus-article-current-summary 'norecord))
+              (pop-to-buffer gnus-article-current-summary)
+              (setq win (selected-window)))
              ((setq win (get-buffer-window gnus-article-current-summary))
               (select-window win))
              (t
-              (switch-to-buffer gnus-article-current-summary 'norecord)))
+              (let ((summary-buffer gnus-article-current-summary))
+                (gnus-configure-windows 'article)
+                (unless (setq win (get-buffer-window summary-buffer 'visible))
+                  (let ((gnus-buffer-configuration
+                         '(article ((vertical 1.0
+                                              (summary 0.25 point)
+                                              (article 1.0))))))
+                    (gnus-configure-windows 'article))
+                  (setq win (get-buffer-window summary-buffer 'visible)))
+                (gnus-select-frame-set-input-focus (window-frame win))
+                (select-window win))))
        (setq in-buffer (current-buffer))
        ;; We disable the pick minor mode commands.
        (if (and (setq func (let (gnus-pick-mode)
                              (lookup-key (current-local-map) keys)))
-                (functionp func))
+                (functionp func)
+                (condition-case code
+                    (progn
+                      (call-interactively func)
+                      t)
+                  (error
+                   (setq err code)
+                   nil)))
            (progn
-             (call-interactively func)
              (when (eq win (selected-window))
                (setq new-sum-point (point)
                      new-sum-start (window-start win)
                      new-sum-hscroll (window-hscroll win)))
-             (when (eq in-buffer (current-buffer))
+             (when (or (eq in-buffer (current-buffer))
+                       (when (eq obuf (current-buffer))
+                         (set-buffer in-buffer)
+                         t))
                (setq selected (gnus-summary-select-article))
                (set-buffer obuf)
                (unless not-restore-window
                  (set-window-configuration owin))
-               (when (eq selected 'old)
-                 (article-goto-body)
+               (when (and (eq selected 'old)
+                          new-sum-point)
                  (set-window-start (get-buffer-window (current-buffer))
                                    1)
                  (set-window-point (get-buffer-window (current-buffer))
-                                   (point)))
+                                   (if (article-goto-body)
+                                       (1- (point))
+                                     (point))))
                (when (and (not not-restore-window)
-                          new-sum-point)
+                          new-sum-point
+                          (with-current-buffer (window-buffer win)
+                            (eq major-mode 'gnus-summary-mode)))
                  (set-window-point win new-sum-point)
                  (set-window-start win new-sum-start)
                  (set-window-hscroll win new-sum-hscroll))))
          (set-window-configuration owin)
-         (ding))))))
+         (if err
+             (signal (car err) (cdr err))
+           (ding))))))))
 
 (defun gnus-article-describe-key (key)
   "Display documentation of the function invoked by KEY.  KEY is a string."
@@ -6610,6 +6828,7 @@ must return `mid', `mail', `invalid' or `ask'."
     (-20.0 . "\\.fsf@")        ;; Gnus
     (-20.0 . "^slrn")
     (-20.0 . "^Pine")
+    (-20.0 . "^alpine\\.")
     (-20.0 . "_-_") ;; Subject change in thread
     ;;
     (-20.0 . "\\.ln@") ;; leafnode
@@ -6958,13 +7177,10 @@ positives are possible."
      ;; here to determine where it ends.
      1 (>= gnus-button-emacs-level 1) gnus-button-handle-describe-key 3)
     ;; This is how URLs _should_ be embedded in text (RFC 1738, RFC 2396)...
-    ("<URL: *\\([^<>]*\\)>"
-     1 (>= gnus-button-browse-level 0) gnus-button-embedded-url 1)
-    ;; RFC 2396 (2.4.3., delims) ...
-    ("\"URL: *\\([^\"]*\\)\""
+    ("<URL: *\\([^\n<>]*\\)>"
      1 (>= gnus-button-browse-level 0) gnus-button-embedded-url 1)
     ;; RFC 2396 (2.4.3., delims) ...
-    ("\"URL: *\\([^\"]*\\)\""
+    ("\"URL: *\\([^\n\"]*\\)\""
      1 (>= gnus-button-browse-level 0) gnus-button-embedded-url 1)
     ;; Raw URLs.
     (gnus-button-url-regexp
@@ -7016,6 +7232,7 @@ variable it the real callback function."
                       (repeat :tag "Par"
                               :inline t
                               (integer :tag "Regexp group")))))
+(put 'gnus-button-alist 'risky-local-variable t)
 
 (defcustom gnus-header-button-alist
   '(("^\\(References\\|Message-I[Dd]\\|^In-Reply-To\\):" "<[^<>]+>"
@@ -7055,6 +7272,7 @@ HEADER is a regexp to match a header.  For a fuller explanation, see
                       (repeat :tag "Par"
                               :inline t
                               (integer :tag "Regexp group")))))
+(put 'gnus-header-button-alist 'risky-local-variable t)
 
 ;;; Commands:
 
@@ -7146,7 +7364,7 @@ It does this by highlighting everything after
       (save-restriction
        (when (and gnus-signature-face
                   (gnus-article-narrow-to-signature))
-         (gnus-overlay-put (gnus-make-overlay (point-min) (point-max))
+         (gnus-overlay-put (gnus-make-overlay (point-min) (point-max) nil t)
                            'face gnus-signature-face)
          (widen)
          (gnus-article-search-signature)
@@ -7188,19 +7406,79 @@ specified by `gnus-button-alist'."
        (setq regexp (eval (car entry)))
        (goto-char beg)
        (while (re-search-forward regexp nil t)
-         (let* ((start (and entry (match-beginning (nth 1 entry))))
-                (end (and entry (match-end (nth 1 entry))))
-                (from (match-beginning 0)))
+         (let ((start (match-beginning (nth 1 entry)))
+               (end (match-end (nth 1 entry)))
+               (from (match-beginning 0)))
            (when (and (or (eq t (nth 2 entry))
                           (eval (nth 2 entry)))
                       (not (gnus-button-in-region-p
                             start end 'gnus-callback)))
              ;; That optional form returned non-nil, so we add the
              ;; button.
-             (gnus-article-add-button
-              start end 'gnus-button-push
-              (car (push (set-marker (make-marker) from)
-                         gnus-button-marker-list))))))))))
+             (setq from (set-marker (make-marker) from))
+             (push from gnus-button-marker-list)
+             (unless (and (eq (car entry) 'gnus-button-url-regexp)
+                          (gnus-article-extend-url-button from start end))
+               (gnus-article-add-button start end
+                                        'gnus-button-push from)))))))))
+
+(defun gnus-article-extend-url-button (beg start end)
+  "Extend url button if url is folded into two or more lines.
+Return non-nil if button is extended.  BEG is a marker that points to
+the beginning position of a text containing url.  START and END are
+the endpoints of a url button before it is extended.  The concatenated
+url is put as the `gnus-button-url' overlay property on the button."
+  (let ((opoint (point))
+       (points (list start end))
+       url delim regexp)
+    (prog1
+       (when (and (progn
+                    (goto-char end)
+                    (not (looking-at "[\t ]*[\">]")))
+                  (progn
+                    (goto-char start)
+                    (string-match
+                     "\\(?:\"\\|\\(<\\)\\)[\t ]*\\(?:url[\t ]*:[\t ]*\\)?\\'"
+                     (buffer-substring (point-at-bol) start)))
+                  (progn
+                    (setq url (list (buffer-substring start end))
+                          delim (if (match-beginning 1) ">" "\""))
+                    (beginning-of-line)
+                    (setq regexp (concat
+                                  (when (and (looking-at
+                                              message-cite-prefix-regexp)
+                                             (< (match-end 0) start))
+                                    (regexp-quote (match-string 0)))
+                                  "\
+\[\t ]*\\(?:\\([^\t\n \">]+\\)[\t ]*$\\|\\([^\t\n \">]*\\)[\t ]*"
+                                  delim "\\)"))
+                    (while (progn
+                             (forward-line 1)
+                             (and (looking-at regexp)
+                                  (prog1
+                                      (match-beginning 1)
+                                    (push (or (match-string 2)
+                                              (match-string 1))
+                                          url)
+                                    (push (setq end (or (match-end 2)
+                                                        (match-end 1)))
+                                          points)
+                                    (push (or (match-beginning 2)
+                                              (match-beginning 1))
+                                          points)))))
+                    (match-beginning 2)))
+         (let (gnus-article-mouse-face widget-mouse-face)
+           (while points
+             (gnus-article-add-button (pop points) (pop points)
+                                      'gnus-button-push beg)))
+         (let ((overlay (gnus-make-overlay start end)))
+           (gnus-overlay-put overlay 'evaporate t)
+           (gnus-overlay-put overlay 'gnus-button-url
+                             (list (mapconcat 'identity (nreverse url) "")))
+           (when gnus-article-mouse-face
+             (gnus-overlay-put overlay 'mouse-face gnus-article-mouse-face)))
+         t)
+      (goto-char opoint))))
 
 ;; Add buttons to the head of an article.
 (defun gnus-article-add-buttons-to-head ()
@@ -7237,7 +7515,7 @@ specified by `gnus-button-alist'."
 (defun gnus-article-add-button (from to fun &optional data)
   "Create a button between FROM and TO with callback FUN and data DATA."
   (when gnus-article-button-face
-    (gnus-overlay-put (gnus-make-overlay from to)
+    (gnus-overlay-put (gnus-make-overlay from to nil t)
                      'face gnus-article-button-face))
   (gnus-add-text-properties
    from to
@@ -7290,12 +7568,14 @@ specified by `gnus-button-alist'."
     (let* ((entry (gnus-button-entry))
           (inhibit-point-motion-hooks t)
           (fun (nth 3 entry))
-          (args (mapcar (lambda (group)
-                          (let ((string (match-string group)))
-                            (set-text-properties
-                             0 (length string) nil string)
-                            string))
-                        (nthcdr 4 entry))))
+          (args (or (and (eq (car entry) 'gnus-button-url-regexp)
+                         (get-char-property marker 'gnus-button-url))
+                    (mapcar (lambda (group)
+                              (let ((string (match-string group)))
+                                (set-text-properties
+                                 0 (length string) nil string)
+                                string))
+                            (nthcdr 4 entry)))))
       (cond
        ((fboundp fun)
        (apply fun args))
@@ -7532,7 +7812,7 @@ specified by `gnus-button-alist'."
                (1- (point))
              (point)))
     (when gnus-article-button-face
-      (gnus-overlay-put (gnus-make-overlay b e)
+      (gnus-overlay-put (gnus-make-overlay b e nil t)
                         'face gnus-article-button-face))
     (widget-convert-button
      'link b e
@@ -7568,7 +7848,7 @@ specified by `gnus-button-alist'."
                (1- (point))
              (point)))
     (when gnus-article-button-face
-      (gnus-overlay-put (gnus-make-overlay b e)
+      (gnus-overlay-put (gnus-make-overlay b e nil t)
                         'face gnus-article-button-face))
     (widget-convert-button
      'link b e
@@ -7614,14 +7894,13 @@ For example:
               (eq gnus-newsgroup-name
                   (car gnus-decode-header-methods-cache)))
     (setq gnus-decode-header-methods-cache (list gnus-newsgroup-name))
-    (mapcar (lambda (x)
-             (if (symbolp x)
-                 (nconc gnus-decode-header-methods-cache (list x))
-               (if (and gnus-newsgroup-name
-                        (string-match (car x) gnus-newsgroup-name))
-                   (nconc gnus-decode-header-methods-cache
-                          (list (cdr x))))))
-         gnus-decode-header-methods))
+    (dolist (x gnus-decode-header-methods)
+      (if (symbolp x)
+         (nconc gnus-decode-header-methods-cache (list x))
+       (if (and gnus-newsgroup-name
+                (string-match (car x) gnus-newsgroup-name))
+           (nconc gnus-decode-header-methods-cache
+                  (list (cdr x)))))))
   (let ((xlist gnus-decode-header-methods-cache))
     (pop xlist)
     (save-restriction
@@ -7857,18 +8136,15 @@ For example:
        point (inhibit-read-only t))
     (if region
        (goto-char (car region)))
-    (save-restriction
-      (narrow-to-region (point) (point))
-      (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))))
-      (setq point (point))
-      (gnus-mime-display-security handle)
-      (goto-char (point-max)))
+    (setq point (point))
+    (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))))
+    (gnus-mime-display-security handle)
     (when region
       (delete-region (point) (cdr region))
       (set-marker (car region) nil)
@@ -7957,7 +8233,7 @@ For example:
                (1- (point))
              (point)))
     (when gnus-article-button-face
-      (gnus-overlay-put (gnus-make-overlay b e)
+      (gnus-overlay-put (gnus-make-overlay b e nil t)
                         'face gnus-article-button-face))
     (widget-convert-button
      'link b e
@@ -7990,7 +8266,8 @@ For example:
     (mm-set-handle-multipart-parameter
      handle 'gnus-region
      (cons (set-marker (make-marker) (point-min))
-          (set-marker (make-marker) (point-max))))))
+          (set-marker (make-marker) (point-max))))
+    (goto-char (point-max))))
 
 (defun gnus-mime-security-run-function (function)
   "Run FUNCTION with the security part under point."