<span class='lparen'>(</span><span class='symbol'>:mco_array_to_string</span><span class='comma'>,</span> <span class='label'>type:</span> <span class='symbol'>:rvalue</span><span class='rparen'>)</span> <span class='kw'>do</span> <span class='op'>|</span><span class='id identifier rubyid_args'>args</span><span class='op'>|</span>
  <span class='kw'>unless</span> <span class='id identifier rubyid_args'>args</span><span class='lbracket'>[</span><span class='int'>0</span><span class='rbracket'>]</span><span c