title: In R convert character encoding to UTF-8 (not using stringi)
body: <p>I want to convert character strings to <code>UTF-8</code>. At the moment, I've managed to do this using <code>stringi</code>, like this:</p>
  <pre><code>test_string &lt;- c(&quot;Fiancé is great.&quot;)
  stringi::stri_encode(test_string, &quot;UTF-8&quot;)
  </code></pre>
  <p>However, how can I do the same using R <code>base</code> or <code>stringr</code>?</p>
  <p>Thanks in advance</p>