span class="identifier">days_until_weekday</span><span class="special">(</span><span class="identifier">first</span><span class="special">(</span><span class="identifier">scope</span><span class="special">),</span> <span class="identifier">greg_weekday</span><span class="special">(</span><span class="identifier">Saturday</span><span class="special">)))</span> 
          <span class="special">-</span> <span class="identifier">weeks</span><span class="special">(</span><span class="number">1</span><span class=