# File lib/ruby2ruby.rb, line 675
  def process_op_asgn1(exp)
    # [[:lvar, :b], [:array, [:lit, 1]], :"||", [:lit, 10]]
    lhs = process(exp.shift)
    index = process(exp.shift)
    msg = exp.shift
    rhs = process(exp.shift)

    "#{lhs}#{index} #{msg}= #{rhs}"
  end