multiple assignment AST in ruby

ast.txt

mbj@mbj ~/devel/mutant (master) % bundle exec ruby-parse -e 'a.foo, a[1], b[] = b, *c'                                                                                                                                                                                       <<<
(masgn
  (mlhs
    (send
      (send nil :a) :foo=)
    (send
      (send nil :a) :[]=
      (int 1))
    (send
      (send nil :b) :[]=))
  (array
    (send nil :b)
    (splat
      (send nil :c))))