+ (let ((w3m-safe-url-regexp mm-w3m-safe-url-regexp)
+ w3m-force-redisplay)
+ (w3m-region (point-min) (point-max)))
+ (when (and mm-inline-text-html-with-w3m-keymap
+ (boundp 'w3m-minor-mode-map)
+ w3m-minor-mode-map)
+ (add-text-properties
+ (point-min) (point-max)
+ (list 'keymap w3m-minor-mode-map
+ ;; Put the mark meaning this part was rendered by emacs-w3m.
+ 'mm-inline-text-html-with-w3m t))))
+
+(eval-when-compile (defvar charset)) ;; Bound by `article-wash-html'.
+
+(defun gnus-article-wash-html-with-w3m-standalone ()
+ "Wash the current buffer with w3m."
+ (if (mm-w3m-standalone-supports-m17n-p)
+ (progn
+ (unless (mm-coding-system-p charset) ;; Bound by `article-wash-html'.
+ ;; The default.
+ (setq charset 'iso-8859-1))
+ (let ((coding-system-for-write charset)
+ (coding-system-for-read charset))
+ (call-process-region
+ (point-min) (point-max)
+ "w3m" t t nil "-dump" "-T" "text/html"
+ "-I" (symbol-name charset) "-O" (symbol-name charset))))
+ (mm-inline-wash-with-stdin nil "w3m" "-dump" "-T" "text/html")))
+
+(defvar gnus-article-browse-html-temp-list nil
+ "List of temporary files created by `gnus-article-browse-html-parts'.
+Internal variable.")
+
+(defcustom gnus-article-browse-delete-temp 'ask
+ "What to do with temporary files from `gnus-article-browse-html-parts'.
+If nil, don't delete temporary files. If it is t, delete them on
+exit from the summary buffer. If it is the symbol `file', query
+on each file, if it is `ask' ask once when exiting from the
+summary buffer."
+ :group 'gnus-article
+ :version "23.0" ;; No Gnus
+ :type '(choice (const :tag "Don't delete" nil)
+ (const :tag "Don't ask" t)
+ (const :tag "Ask" ask)
+ (const :tag "Ask for each file" file)))
+
+;; Cf. mm-postponed-undisplay-list / mm-destroy-postponed-undisplay-list.
+
+(defun gnus-article-browse-delete-temp-files (&optional how)
+ "Delete temp-files created by `gnus-article-browse-html-parts'."
+ (when (and gnus-article-browse-html-temp-list
+ (or how
+ (setq how gnus-article-browse-delete-temp)))
+ (when (and (eq how 'ask)
+ (y-or-n-p (format
+ "Delete all %s temporary HTML file(s)? "
+ (length gnus-article-browse-html-temp-list)))
+ (setq how t)))
+ (dolist (file gnus-article-browse-html-temp-list)
+ (when (and (file-exists-p file)
+ (or (eq how t)
+ ;; `how' is neither `nil', `ask' nor `t' (i.e. `file'):
+ (gnus-y-or-n-p
+ (format "Delete temporary HTML file `%s'? " file))))
+ (delete-file file)))
+ ;; Also remove file from the list when not deleted or if file doesn't
+ ;; exist anymore.
+ (setq gnus-article-browse-html-temp-list nil))
+ gnus-article-browse-html-temp-list)
+
+(defun gnus-article-browse-html-parts (list)
+ "View all \"text/html\" parts from LIST.
+Recurse into multiparts."
+ ;; Internal function used by `gnus-article-browse-html-article'.
+ (let ((showed))
+ ;; Find and show the html-parts.
+ (dolist (handle list)
+ ;; If HTML, show it:
+ (when (listp handle)
+ (cond ((and (bufferp (car handle))
+ (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)
+ (add-to-list 'gnus-article-browse-html-temp-list tmp-file)
+ (add-hook 'gnus-summary-prepare-exit-hook
+ 'gnus-article-browse-delete-temp-files)
+ (add-hook 'gnus-exit-gnus-hook
+ (lambda ()
+ (gnus-article-browse-delete-temp-files t)))
+ (browse-url tmp-file)
+ (setq showed t)))
+ ;; If multipart, recurse
+ ((and (stringp (car handle))
+ (string-match "^multipart/" (car handle))
+ (setq showed
+ (or showed
+ (gnus-article-browse-html-parts handle))))))))
+ showed))
+
+;; TODO: Key binding
+(defun gnus-article-browse-html-article ()
+ "View \"text/html\" parts of the current article with a WWW browser."
+ (interactive)
+ (save-window-excursion
+ ;; Open raw article and select the buffer
+ (gnus-summary-show-article t)
+ (gnus-summary-select-article-buffer)
+ (let ((parts (mm-dissect-buffer t t)))
+ ;; If singlepart, enforce a list.
+ (when (and (bufferp (car parts))
+ (stringp (car (mm-handle-type parts))))
+ (setq parts (list parts)))
+ ;; Process the list
+ (unless (gnus-article-browse-html-parts parts)
+ (gnus-error 3 "Mail doesn't contain a \"text/html\" part!"))
+ (gnus-summary-show-article))))