="co"># stringr</span></span>
<span id="cb27-2"><a href="#cb27-2" tabindex="-1"></a><span class="fu">str_to_upper</span>(<span class="st">&quot;i&quot;</span>) <span class="co"># English</span></span>
<span id="cb27-3"><a href="#cb27-3" tabindex="-1"></a><span class="co">#&gt; [1] &quot;I&quot;</span></span>
<span id="cb27-4"><a href="#cb27-4" tabindex="-1"></a><span class="fu">str_to_upper</span>(<span class="st">&quot;i&quot;</span>, <span class="at">locale =</span> <span class="st">&quot;tr&quot;</span>)