title: Is it possible to make rails i18n locales fallback to each other?
body: <p>I'm using Rails 3 with Globalize3 0.2.0.beta4</p>
  
  <p>Ideally I need :fr to fallback to :en and vice versa.</p>
  
  <p>There are cases when only a French translation is available and I need to show it even if the locale is :en.</p>
  
  <p>I tried</p>
  
  <pre><code>config.i18n.fallbacks = { :fr =&gt; :en, :en =&gt; :fr }
  </code></pre>
  
  <p>but somewhat unsurprisingly it causes a stack level too deep error.</p>