Pastable version of Enumerable#to_a with terminating conditions

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            <pre class="sunburst"><span style="color:#E28964;">module</span> <span style="text-decoration:underline;">Enumerable</span>
  <span style="color:#E28964;">def</span> <span style="color:#89BDFF;">to_a</span>(<span style="color:#3E87E3;">n <span style="color:#E28964;">=</span> <span style="color:#3387CC;">nil</span></span>)
    result <span style="color:#E28964;">=</span> []
    inclusion_condition <span style="color:#E28964;">=</span> <span style="color:#3387CC;">true</span>
    <span style="color:#E28964;">return</span> result <span style="color:#E28964;">if</span> n.<span style="color:#89BDFF;">to_i</span> <span style="color:#E28964;">&lt;=</span> <span style="color:#3387CC;">0</span> <span style="color:#E28964;">and</span> <span style="color:#E28964;">!</span><span style="color:#E28964;">block_given?</span>
    each <span style="color:#E28964;">do </span>|*<span style="color:#3E87E3;">elements</span>|
      elements <span style="color:#E28964;">=</span> elements.<span style="color:#89BDFF;">first</span> <span style="color:#E28964;">if</span> elements.<span style="color:#89BDFF;">size</span> <span style="color:#E28964;">==</span> <span style="color:#3387CC;">1</span>
      <span style="color:#E28964;">if</span> <span style="color:#E28964;">block_given?</span>
        values <span style="color:#E28964;">=</span> result.<span style="color:#89BDFF;">last</span>
        inclusion_condition <span style="color:#E28964;">=</span> <span style="color:#E28964;">yield</span>(<span style="color:#E28964;">*</span>values) <span style="color:#E28964;">unless</span> values.<span style="color:#89BDFF;">nil?</span>
      <span style="color:#E28964;">else</span>
        inclusion_condition <span style="color:#E28964;">=</span> n <span style="color:#E28964;">!=</span> result.<span style="color:#89BDFF;">size</span>
      <span style="color:#E28964;">end</span>

<span style="color:#E28964;">if</span> inclusion_condition
        result <span style="color:#E28964;">&lt;&lt;</span> elements
      <span style="color:#E28964;">else</span>
        result.<span style="color:#89BDFF;">pop</span> <span style="color:#E28964;">if</span> <span style="color:#E28964;">block_given?</span>
        <span style="color:#E28964;">break</span> result
      <span style="color:#E28964;">end</span>
    <span style="color:#E28964;">end</span>
    result
  <span style="color:#E28964;">end</span>
<span style="color:#E28964;">end</span>
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