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

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+From: Tomi Ollila <tomi.ollila@iki.fi>\r
+To: David Bremner <david@tethera.net>, Jinwoo Lee <jinwoo68@gmail.com>,\r
+       notmuch@notmuchmail.org\r
+Subject: Re: [PATCH] Add a defcustom for whether to block remote images by\r
+       default.\r
+In-Reply-To: <87pp9yjbhw.fsf@maritornes.cs.unb.ca>\r
+References: <1422495572-40384-1-git-send-email-jinwoo68@gmail.com>\r
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+Date: Thu, 29 Jan 2015 10:58:14 +0200\r
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+On Thu, Jan 29 2015, David Bremner <david@tethera.net> wrote:\r
+\r
+> Jinwoo Lee <jinwoo68@gmail.com> writes:\r
+>\r
+>> +   (shr-blocked-images (if notmuch-show-block-remote-images\r
+>> +                           "."\r
+>> +                         shr-blocked-images)))\r
+>>      (shr-insert-document dom)\r
+>>      t))\r
+>\r
+> Ideally such a customization would apply to all html renders. I think\r
+> Tomi did some experiments with w3m and friends, I _think_ they respect\r
+> gnus-blocked-images, but maybe Tomi can comment.\r
+\r
+I did M-x debug-on-entry RET open-network-stream RET  (or an equivalent of\r
+t that in elisp, but the code I did is now lost & forgotten ;/\r
+\r
+The docstring relevant to the renderers below it at the end of this email.\r
+\r
+'gnus-w3m respect gnus-blocked-images\r
+\r
+I could not run 'w3m on that system... nor 'w3\r
+\r
+There was no effect with 'w3m-standalone -- in this case I'd think it is up\r
+to w3m binary to load external stuff or not. I presume the same is the\r
+case with 'links, 'lynx, 'html2text and nil\r
+\r
+So, to add to David's suggestion maybe just set both gnus-blocked-images\r
+and shr-blocked-images to the value of notmuch-show-text/html-blocked-images\r
+\r
+\r
+Tomi\r
+\r
+\r
+mm-text-html-renderer is a variable defined in `mm-decode.el'.\r
+Its value is shr\r
+\r
+Documentation:\r
+Render of HTML contents.\r
+It is one of defined renderer types, or a rendering function.\r
+The defined renderer types are:\r
+`shr': use the built-in Gnus HTML renderer;\r
+`gnus-w3m': use Gnus renderer based on w3m;\r
+`w3m': use emacs-w3m;\r
+`w3m-standalone': use plain w3m;\r
+`links': use links;\r
+`lynx': use lynx;\r
+`w3': use Emacs/W3;\r
+`html2text': use html2text;\r
+nil    : use external viewer (default web browser).\r
+\r
+\r
+> d\r