Sure, Ruby:

     x = (1..100).each do |i|
       if i > 9
         break i
       end
     end

Evaluating that gives

    > x
    => 10

You can also supply a value to next within a loop, which is occasionally useful

If you're using the loop macro, you can do it from Common Lisp (see [0]).

  (block outer
    (loop for i from 0 return 100) ; 100 returned from LOOP
    (print "This will print")
    200) ==> 200

  (block outer
    (loop for i from 0 do (return-from outer 100)) ; 100 returned from BLOCK
    (print "This won't print")
    200) ==> 100

[0] - http://www.gigamonkeys.com/book/loop-for-black-belts.html

EDIT: I always do formatting wrong on here.

I feel like this has to have precedent from somewhere, most likely from another expression-oriented language, but I can't seem to find one right now. I've checked the RFC expecting to see a discussion of precedence from other languages, but no luck so far.

ruby does this

have code around my app doing things like:

  loop do
    code = random_string(6)
    break code unless code_already_used?(code)
  end