Execution example::

  select Entries --match_columns body --query 'groonga OR mroonga' --output_columns 'highlight_html(body, {"sequential_class_tag_mode": true})'
  # [
  #   [
  #     0,
  #     1686038572.355064,
  #     0.002784013748168945
  #   ],
  #   [
  #     [
  #       [
  #         1
  #       ],
  #       [
  #         [
  #           "highlight_html",
  #           null
  #         ]
  #       ],
  #       [
  #         "<mark class=\"keyword-0\">Mroonga</mark> is a ＭｙＳＱＬ storage engine based on <mark class=\"keyword-1\">Groonga</mark>. &lt;b&gt;Rroonga&lt;/b&gt; is a Ruby binding of <mark class=\"keyword-1\">Groonga</mark>."
  #       ]
  #     ]
  #   ]
  # ]
