title: R Make identical two strings that look the same but are not identical
body: <p>I have two strings that look the same but are not identical. </p>
  
  <pre><code>&gt; t
  [1] "2009_Manaus_Aerotáxi_crash"
  &gt; t2
  [1] "2009_Manaus_Aerotáxi_crash"
  &gt; identical(t,t2)
  [1] FALSE
  &gt; str(t)
   chr "2009_Manaus_Aerotaxi_crash""| __truncated__
  &gt; str(t2)
   chr "2009_Manaus_Aerotáxi_crash"
  </code></pre>
  
  <p>How can I force these two strings to be equal?</p>
  
  <p>Thanks</p>