title: Ant replace token from properties file
body: <p>i would like to replace tokens in source files with Ant:</p>
  
  <pre><code>some test ${foo} other text ...
  </code></pre>
  
  <p>Tokens are contained in a properties file eg.:</p>
  
  <pre><code>foo=1
  </code></pre>
  
  <p>Actually this is easy if tokens in source files were like '@@foo@@' or 'foo' but i'm not able to replace whole token : ${foo}</p>
  
  <p>I've succeed years ago but this time i've failed ...</p>
  
  <p>Thanks</p>