You can use anything you want for personal tools, right?

Like, if you know you're going to have to sanitize a ton of data, couldn't you use anything you wanted?

Actually, I just did this in Ruby (I'm the grandparent post). Still, I'd love to use Scheme/Lisp/Haskell all day.

If it's stable, by definition it won't remain cool for long.

That's why what you ask for doesn't exist.