[PATCH] Add a defcustom for whether to block remote images by default.

[David Bremner]

Jinwoo Lee <jinwoo68 at gmail.com> writes:

> +     (shr-blocked-images (if notmuch-show-block-remote-images
> +                             "."
> +                           shr-blocked-images)))
>      (shr-insert-document dom)
>      t))

Ideally such a customization would apply to all html renders. I think
Tomi did some experiments with w3m and friends, I _think_ they respect
gnus-blocked-images, but maybe Tomi can comment.

d