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From: Kevin Ryde <user42@zip.com.au>
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Subject: gnus-mime-copy-part and jka-compr
Date: Mon, 18 Nov 2002 08:51:01 +1000
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I wonder if it'd be possible for gnus-mime-copy-part (`c') to
automatically decompress a file like foo.tar.bz2 in a message.

It doesn't seem to cooperate with auto-compression-mode at the moment.
It ends up with a buffer that's still got the compressed data but has
been put into tar-mode, which of course is not right.

It seems jka-compr works by hooking insert-file-contents with
file-name-handler-alist, and leaving a do-nothing ("\\.bz2\\'" nil
jka-compr) in auto-mode-alist, so the normal-mode call in
gnus-mime-copy-part doesn't do the trick.