Simplest bash quine ?

Playing around with some of the new bash-3 features I accidentally found a really simple quine:

[ $ ~ ] cat quine.bash
echo ${BASH_COMMAND}
[ $ ~ ] bash quine.bash
echo ${BASH_COMMAND}
[ $ ~ ]

Of course it only works on bash-3. I don't know if that's 'cheating'... but oh well... it's still interesting heh :)

Cheers,
Ferdy