class Unparser::Writer::Regexp::Effective

def emit_body(node)
  if n_begin?(node)
    write('#{')
    node.children.each(&method(:visit))
    write('}')
  elsif n_gvar?(node)
    write('#')
    write_regular(node.children.first.to_s)
  else
    write_regular(node.children.first)
  end
end