title: Can’t seem to workout how to pass 3 arguments to filter
body: <p>I am using Jekyll and I have the following filter</p>
  
  <pre><code>def localize(input, url, format)
  # code
  end 
  </code></pre>
  
  <p>and I call it within my files as follows:</p>
  
  <p><code>{{ 'title' | localize: 'curriculum' }}</code> and that works fine when I remove the <code>url</code> parameter. </p>
  
  <p>Iv tried <code>{{ 'title', 'url' | localize: 'curriculum' }}</code> and <code>{{ 'title' | 'url' | localize: 'curriculum' }}</code></p>
  
  <p>but I always get:</p>
  
  <p><code>Liquid Exception: wrong number of arguments (2 for 3) in ar-EG/index.html</code></p>
  
  <p>Can anyone point out how I can pass in the <code>url</code> variable. </p>