Remove nnml-retrieve-groups that is unnecessary and somewhat problematic
[gnus] / lisp / mm-decode.el
index 2bfd145..327b0e6 100644 (file)
@@ -1,6 +1,6 @@
 ;;; mm-decode.el --- Functions for decoding MIME things
 
-;; Copyright (C) 1998-2013 Free Software Foundation, Inc.
+;; Copyright (C) 1998-2015 Free Software Foundation, Inc.
 
 ;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
 ;;     MORIOKA Tomohiko <morioka@jaist.ac.jp>
 
 ;;; Code:
 
-;; For Emacs <22.2 and XEmacs.
-(eval-and-compile
-  (unless (fboundp 'declare-function) (defmacro declare-function (&rest r))))
-
 (require 'mail-parse)
 (require 'mm-bodies)
 (eval-when-compile (require 'cl))
        ((executable-find "w3m") 'gnus-w3m)
        ((executable-find "links") 'links)
        ((executable-find "lynx") 'lynx)
-       ((locate-library "w3") 'w3)
        ((locate-library "html2text") 'html2text)
        (t nil))
   "Render of HTML contents.
@@ -136,13 +131,11 @@ The defined renderer types are:
 `w3m-standalone': use plain w3m;
 `links': use links;
 `lynx': use lynx;
-`w3': use Emacs/W3;
 `html2text': use html2text;
 nil    : use external viewer (default web browser)."
   :version "24.1"
   :type '(choice (const shr)
                  (const gnus-w3m)
-                 (const w3)
                  (const w3m :tag "emacs-w3m")
                 (const w3m-standalone :tag "standalone w3m" )
                 (const links)
@@ -153,9 +146,9 @@ nil    : use external viewer (default web browser)."
   :group 'mime-display)
 
 (defcustom mm-inline-text-html-with-images nil
-  "If non-nil, Gnus will allow retrieving images in HTML contents with
-the <img> tags.  It has no effect on Emacs/w3.  See also the
-documentation for the `mm-w3m-safe-url-regexp' variable."
+  "If non-nil, Gnus will allow retrieving images in HTML that has <img> tags.
+See also the documentation for the `mm-w3m-safe-url-regexp'
+variable."
   :version "22.1"
   :type 'boolean
   :group 'mime-display)
@@ -538,14 +531,6 @@ result of the verification."
     map)
   "Keymap for input viewer with completion.")
 
-(defvar mm-viewer-completion-map
-  (let ((map (make-sparse-keymap 'mm-viewer-completion-map)))
-    (set-keymap-parent map minibuffer-local-completion-map)
-    ;; Should we bind other key to minibuffer-complete-word?
-    (define-key map " " 'self-insert-command)
-    map)
-  "Keymap for input viewer with completion.")
-
 ;;; The functions.
 
 (defun mm-alist-to-plist (alist)
@@ -607,19 +592,19 @@ files left at the next time."
                    (split-string (buffer-string) "\n" t))))
         fails)
     (dolist (temp (append cache mm-temp-files-to-be-deleted))
-      (unless (and (file-exists-p temp)
-                  (if (file-directory-p temp)
-                      ;; A parent directory left at the previous time.
+      (when (and (file-exists-p temp)
+                (if (file-directory-p temp)
+                    ;; A parent directory left at the previous time.
+                    (progn
+                      (ignore-errors (delete-directory temp))
+                      (file-exists-p temp))
+                  ;; Delete a temporary file and its parent directory.
+                  (ignore-errors (delete-file temp))
+                  (or (file-exists-p temp)
                       (progn
+                        (setq temp (file-name-directory temp))
                         (ignore-errors (delete-directory temp))
-                        (not (file-exists-p temp)))
-                    ;; Delete a temporary file and its parent directory.
-                    (ignore-errors (delete-file temp))
-                    (and (not (file-exists-p temp))
-                         (progn
-                           (setq temp (file-name-directory temp))
-                           (ignore-errors (delete-directory temp))
-                           (not (file-exists-p temp))))))
+                        (file-exists-p temp)))))
        (push temp fails)))
     (if fails
        ;; Schedule the deletion of the files left at the next time.
@@ -629,7 +614,8 @@ files left at the next time."
                        nil cache-file nil 'silent)
          (set-file-modes cache-file #o600))
       (when (file-exists-p cache-file)
-       (ignore-errors (delete-file cache-file))))))
+       (ignore-errors (delete-file cache-file))))
+    (setq mm-temp-files-to-be-deleted nil)))
 
 (autoload 'message-fetch-field "message")
 
@@ -661,7 +647,7 @@ MIME-Version header before proceeding."
          (unless from
            (setq from (mail-fetch-field "from")))
          ;; FIXME: In some circumstances, this code is running within
-         ;; an unibyte macro.  mail-extract-address-components
+         ;; a unibyte macro.  mail-extract-address-components
          ;; creates unibyte buffers. This `if', though not a perfect
          ;; solution, avoids most of them.
          (if from
@@ -671,9 +657,9 @@ MIME-Version header before proceeding."
                                 description)))))
       (if (or (not ctl)
              (not (string-match "/" (car ctl))))
-         (mm-dissect-singlepart
+           (mm-dissect-singlepart
           (list mm-dissect-default-type)
-          (and cte (intern (downcase (mail-header-strip cte))))
+            (and cte (intern (downcase (mail-header-strip cte))))
           no-strict-mime
           (and cd (mail-header-parse-content-disposition cd))
           description)
@@ -802,6 +788,14 @@ MIME-Version header before proceeding."
 (autoload 'mailcap-parse-mailcaps "mailcap")
 (autoload 'mailcap-mime-info "mailcap")
 
+(defun mm-head-p (&optional point)
+  "Return non-nil if point is in the article header."
+  (let ((point (or point (point))))
+    (save-excursion
+      (goto-char point)
+      (and (not (re-search-backward "^$" nil t))
+          (re-search-forward "^$" nil t)))))
+
 (defun mm-display-part (handle &optional no-default force)
   "Display the MIME part represented by HANDLE.
 Returns nil if the part is removed; inline if displayed inline;
@@ -835,7 +829,10 @@ external if displayed external."
          'inline)
         ((and (mm-inlinable-p ehandle)
               (mm-inlined-p ehandle))
-         (forward-line 1)
+         (when force
+           (if (mm-head-p)
+               (re-search-forward "^$" nil t)
+             (forward-line 1)))
          (mm-display-inline handle)
          'inline)
         ((or method
@@ -848,18 +845,18 @@ external if displayed external."
                'inline)
            (setq external
                  (and method         ;; If nil, we always use "save".
-                      (stringp method) ;; 'mailcap-save-binary-file
                       (or (eq mm-enable-external t)
                           (and (eq mm-enable-external 'ask)
                                (y-or-n-p
                                 (concat
                                  "Display part (" type
-                                 ") using external program"
-                                 ;; Can non-string method ever happen?
+                                 ") "
                                  (if (stringp method)
                                      (concat
-                                      " \"" (format method filename) "\"")
-                                   "")
+                                      "using external program \""
+                                      (format method filename) "\"")
+                                   (gnus-format-message
+                                    "by calling `%s' on the contents)" method))
                                  "? "))))))
            (if external
                (mm-display-external
@@ -900,7 +897,15 @@ external if displayed external."
                                     (mm-handle-media-type handle) t))))
              (unwind-protect
                  (if method
-                     (funcall method)
+                     (progn
+                       (when (and (boundp 'gnus-summary-buffer)
+                                  (bufferp gnus-summary-buffer)
+                                  (buffer-name gnus-summary-buffer))
+                         ;; So that we pop back to the right place, sort of.
+                         (switch-to-buffer gnus-summary-buffer)
+                         (switch-to-buffer mm))
+                       (delete-other-windows)
+                       (funcall method))
                    (mm-save-part handle))
                (when (and (not non-viewer)
                           method)
@@ -953,10 +958,20 @@ external if displayed external."
                            method file (mm-handle-type handle))))
              (unwind-protect
                  (if window-system
-                     (start-process "*display*" nil
-                                    mm-external-terminal-program
-                                    "-e" shell-file-name
-                                    shell-command-switch command)
+                     (set-process-sentinel
+                      (start-process "*display*" nil
+                                     mm-external-terminal-program
+                                     "-e" shell-file-name
+                                     shell-command-switch command)
+                      `(lambda (process state)
+                         (if (eq 'exit (process-status process))
+                             (run-at-time
+                              60.0 nil
+                              (lambda ()
+                                (ignore-errors (delete-file ,file))
+                                (ignore-errors (delete-directory
+                                                ,(file-name-directory
+                                                  file))))))))
                    (require 'term)
                    (require 'gnus-win)
                    (set-buffer
@@ -970,11 +985,15 @@ external if displayed external."
                    (set-process-sentinel
                     (get-buffer-process buffer)
                     `(lambda (process state)
-                       (if (eq 'exit (process-status process))
-                           (gnus-configure-windows
-                            ',gnus-current-window-configuration))))
+                       (when (eq 'exit (process-status process))
+                         (ignore-errors (delete-file ,file))
+                         (ignore-errors
+                           (delete-directory ,(file-name-directory file)))
+                         (gnus-configure-windows
+                          ',gnus-current-window-configuration))))
                    (gnus-configure-windows 'display-term))
-               (mm-handle-set-external-undisplayer handle (cons file buffer)))
+               (mm-handle-set-external-undisplayer handle (cons file buffer))
+               (add-to-list 'mm-temp-files-to-be-deleted file t))
              (message "Displaying %s..." command))
            'external)
           (copiousoutput
@@ -1022,6 +1041,12 @@ external if displayed external."
                                   (handle handle))
                       (lambda (process state)
                         (when (eq (process-status process) 'exit)
+                          (run-at-time
+                           60.0 nil
+                           (lambda ()
+                             (ignore-errors (delete-file file))
+                             (ignore-errors (delete-directory
+                                             (file-name-directory file)))))
                           (when (buffer-live-p outbuf)
                             (with-current-buffer outbuf
                               (let ((buffer-read-only nil)
@@ -1394,7 +1419,7 @@ Return t if meta tag is added or replaced."
        (goto-char (point-min))
        (if (re-search-forward "\
 <meta\\s-+http-equiv=[\"']?content-type[\"']?\\s-+content=[\"']\
-text/\\(\\sw+\\)\\(?:\;\\s-*charset=\\(.+\\)\\)?[\"'][^>]*>" nil t)
+text/\\(\\sw+\\)\\(?:;\\s-*charset=\\([^\"'>]+\\)\\)?[^>]*>" nil t)
            (if (and (not force-charset)
                     (match-beginning 2)
                     (string-match "\\`html\\'" (match-string 1)))
@@ -1799,9 +1824,10 @@ If RECURSIVE, search recursively."
              (not (mm-long-lines-p 76))))))
 
 (declare-function libxml-parse-html-region "xml.c"
-                 (start end &optional base-url))
+                 (start end &optional base-url discard-comments))
 (declare-function shr-insert-document "shr" (dom))
 (defvar shr-blocked-images)
+(defvar shr-use-fonts)
 (defvar gnus-inhibit-images)
 (autoload 'gnus-blocked-images "gnus-art")
 
@@ -1809,6 +1835,10 @@ If RECURSIVE, search recursively."
   ;; Require since we bind its variables.
   (require 'shr)
   (let ((article-buffer (current-buffer))
+       (shr-width (if (and (boundp 'shr-use-fonts)
+                           shr-use-fonts)
+                      nil
+                    fill-column))
        (shr-content-function (lambda (id)
                                (let ((handle (mm-get-content-id id)))
                                  (when handle
@@ -1882,6 +1912,8 @@ If RECURSIVE, search recursively."
         :keymap shr-map
         (get-text-property start 'shr-url))
        (put-text-property start end 'local-map nil)
+       (dolist (overlay (overlays-at start))
+         (overlay-put overlay 'face nil))
        (setq start end)))))
 
 (defun mm-handle-filename (handle)