title: Ant regexp mapper: Reading patterns from a file?
body: <p>I would like to write a generic Ant build script with a <code>&lt;copy&gt;</code> task that could optionally rename files based on regexps. A nested <code>&lt;regexpmapper&gt;</code> would load the renaming patterns from a project-specific properties files if it exists.</p>
  
  <p>Has someone already done this or do I have to write an own mapper?</p>