From mboxrd@z Thu Jan  1 00:00:00 1970
From: Eric Abrahamsen <eric@ericabrahamsen.net>
Subject: Re: capture, attach, link files from web
Date: Tue, 08 Oct 2013 21:31:44 +0800
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Myles English <mylesenglish@gmail.com> writes:

> eric@...net writes:
>
>>>> I've often thought it would be nice to link to images in an org file
>>>> with http: links, then at some arbitrary point in time call a
>>>> hypothetical org-localize-external-resources command. That command would
>>>> wget all the external resources, put them somewhere local, and switch
>>>> the links to the file: type. Just a thought.
>
> How about a derived export backend with a filter that does a wget and
> rewrites the links?
>
> One problem could be what if a wget fails?  As I am finding with my
> implementation, some websites only allow browserlike access.

That's kind of why I think it would be better as a standalone
interactive function, rather than an export preprocessing thingummy.
You'd run it first, with timeouts and error messages, etc, and then
export when you're done.