anchor.diff:    <div id="map"></div>
     <script>
       var map = new L.Map('map');
  -    var layer = new L.TileLayer('/tiles/\<\%\= params[:splat] \%\>/{x}/{y}/{z}.png')
  +    var layer = new L.TileLayer('/tiles/\<\%\= params[:splat].first \%\>/{x}/{y}/{z}.png')
       map.addLayer(layer).setView(new L.LatLng(38, -95), 1);
     </script>
   </body>
  
positive.code:   m.set_bounds(-585080.885134, 6849466.721081, 4161303.603672, 9587780.816356)
  
    Dir["\#\{ROOT\}/data/*.shp"].each do |shp|
      m.vector_layer shp do |l|
        l.query "select * from '\#\{File.basename shp, '.shp'\}'" do |q|
          q.styles "stroke" => "#111111",
                "line-join" => "round",
  
negative.code:     m.slippy params[:x].to_i, params[:y].to_i, params[:z].to_i
  
      # Add a layer based on the parameters in the URL
      m.layer File.join(ROOT, params[:splat].first) do |l|
  
        # Grab all of the data from the shapefile
        l.query "select * from '\#\{File.basename(params[:splat].first, '.shp')\}'" do |q|
  