title: How to check if a string contains accented Latin characters like é in Ruby?
body: <p>Given:</p>
  
  <pre><code>str1 = "é"   # Latin accent
  str2 = "囧"  # Chinese character
  str3 = "ジ"  # Japanese character
  str4 = "e"   # English character
  </code></pre>
  
  <p>How to differentiate <code>str1</code> (Latin accent characters) from rest of the strings?</p>
  
  <p>Update:</p>
  
  <p>Given</p>
  
  <pre><code>str1 = "\xE9" # Latin accent é actually stored as \xE9 reading from a file
  </code></pre>
  
  <p>How would the answer be different?</p>