mm-inline-text-html-with-images and shr

[Mike Kupfer <m.kupfer@acm.org>]

Hi, as you might know, MH-E uses the Emacs MIME (mm) libraries to
display emails.  MH-E users have noticed that if mm-text-html-renderer
is set to 'shr and an HTML email refers to an external image, Emacs will
try to download the image, even when mm-inline-text-html-with-images is
nil.

With Gnus, shr does not have this problem.

AFAICT, this is because shr doesn't pay attention to
mm-inline-text-html-with-images.  Instead, it relies on
gnus-blocked-images to control whether an image gets downloaded.

I want to fix MH-E so that it doesn't download images unless the user
has said to.  But I'm not sure what would be a clean way to do that.
The best I've come up with so far is to temporarily rebind
gnus-blocked-images before calling mm-display-part.

diff --git a/lisp/mh-e/mh-mime.el b/lisp/mh-e/mh-mime.el
--- a/lisp/mh-e/mh-mime.el
+++ b/lisp/mh-e/mh-mime.el
@@ -709,7 +709,9 @@
         region buffer-read-only)
     (save-excursion
       (unwind-protect
-          (let ((win (get-buffer-window (current-buffer) t)))
+          (let ((win (get-buffer-window (current-buffer) t))
+                (gnus-blocked-images
+                 (if mm-inline-text-html-with-images nil ".")))
             (when win
               (select-window win))
             (goto-char point)

Is there a better way?  Could shr be made to honor
mm-inline-text-html-with-images?

thanks,
mike