Quoting Adam Shelly <adam.shelly / gmail.com>:

> My post at
> http://www.ruby-talk.org/cgi-bin/scat.rb/ruby/ruby-talk/170347
> has =09 in place of tabs and =3D instead of equals.

As far as I can see, it's because the archive software doesn't
implement MIME completely enough.  For some "interesting" messages,
it seems to just dump the raw message rather than decoding it.

-mental