# File lib/rcodetools/xmpfilter.rb, line 249
  def execute_popen(code)
    require 'open3'
    stdin, stdout, stderr = Open3::popen3(*interpreter_command)
    stdin.puts code
    @evals.each{|x| stdin.puts x } unless @evals.empty?
    stdin.close
    [stdout, stderr]
  end