<blockquote>
<p>I'm pretty sure it was called <code>string_2</code> to remain generic enough for this type of thing. If not <code>string_2</code> then use <code>string_3</code> or <code>string_4</code> which I don't believe are used much.</p>
</blockquote>
<p>Hum, so these names are not clear enough and should be better documented; because my understanding was rather that the <code>string_N</code> where for different kind of strings (plain, raw, here document, etc.), and I always mapped with this concept in mind.</p>

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