title: Lucene 4.1.0 Porter Stemmer not work properly
body: <p>I work with my App in Java and i use Lucene 4.1.0 to use Porter Stemmer method.
  I have read and implementing <a href="https://stackoverflow.com/questions/5391840/stemming-english-words-with-lucene">this</a></p>
  
  <p>this is my code</p>
  
  <pre><code>import org.apache.lucene.analysis.snowball.*;
  import org.tartarus.snowball.ext.PorterStemmer;
  
  
   private String stemmer(String word){
          PorterStemmer obj = new PorterStemmer();
          obj.setCurrent(word);
          obj.stem();
          return obj.getCurrent();
  }
  </code></pre>
  
  <p>this method works, but Porter Stemmer did not work properly for some words e.g :</p>
  
  <ol>
  <li>source >> sourc</li>
  <li>coupled >> coupl</li>
  <li>accompanying >> accompani</li>
  </ol>
  
  <p>Maybe theres a bug in the algorithm?
  How to solve this problem?</p>