title: Sphinx morphology stem_en not working
body: <p>I have a single-field Sphinx index with stemming set up as follows:</p>
  
  <pre><code>index main_sphinxalert
  {
              # Options:
              type = rt
              path = /var/lib/sphinxsearch/data/main_sphinxalert
              morphology = stem_en
  
              # Fields:
              rt_field = query
  }
  </code></pre>
  
  <p>I then insert:</p>
  
  <pre><code>mysql&gt; INSERT INTO main_sphinxalert VALUES(201,'tables');
  Query OK, 1 row affected (0.00 sec)
  </code></pre>
  
  <p>And select:</p>
  
  <pre><code>mysql&gt; SELECT * FROM main_sphinxalert WHERE MATCH('tables');
  +------+--------+
  |  id  | weight |
  +------+--------+
  | 201  |  1709  |
  +------+--------+
  1 row in set (0.00 sec)
  </code></pre>
  
  <p>But can't select on a stem:</p>
  
  <pre><code>mysql&gt; SELECT * FROM main_sphinxalert WHERE MATCH('table');
  Empty set (0.00 sec)
  </code></pre>
  
  <p>Can anyone tell me what gives?</p>