Signature in Evolution

You can have evolution to execute a script as your signature. I had set it so, but whatever I do:

#!/usr/bin/sh
echo "-- "
echo "Senthil"
exec fortune -s

Resulted in something like this:

-- Senthil BOFH excuse #261: The Usenet news is out of date

Finally figured out with the help of this post(thanks man!), that evolution is actually storing every compose action as HTML so

I would need to wrap it in HTML the output of my script to make it a legible signature.