title: How to expire a caches_action with a cache_path?
body: <p>I'm caching an index action with the following:</p>
  
  <pre><code>caches_action :index, :cache_path =&gt; Proc.new { |c| c.params }
  
  expire_action :action =&gt; :index
  </code></pre>
  
  <p>The expire_action seems to only expire the index action without any parameters.
  How can I expire all the caches_action related to index ?</p>
  
  <p>(it is a Rails 2.3.5 application)</p>