@terdon I mean the thing that you can theoretically implement any computable function with quite a stupid machine... given an infinite roll of paper and all that. I think it might be possible to implement most of that Bash stuff piecewise, without analysing it all in one go. But the words
Turing tarpit also quicky come to mind and as signalled by the smiley, I was jesting. No one in their right mind would want to :D