title: Characters with accent counted as two characters in configurable products
body: <p>We sell configurable products that require a text field with a character limit (we sell personalized bracelets with customer's name on it).</p>
  
  <p>So, we created on our product page a text field with 15 characters limit.</p>
  
  <p>It is perfectly working if I put in this feld for example : "abcdefghijklmno" (which is 15 letters).</p>
  
  <p>But if I put "abcdéfghijklmno" (which still is 15 letters but with the "e" acute), it just won't work, it says "please specify product option".</p>
  
  <p>After a few tests, I found out that letters with accents are counted as 2 characters.</p>
  
  <p>How can I avoid this error ?</p>