lib/scope.rb in expressive-0.0.17 vs lib/scope.rb in expressive-0.0.18

@@ -89,16 +89,16 @@
       end
 
       syntax('lookup') do |scope, cells|
         lookup_result = scope.lookups[cells.first.text_value]
         if lookup_result
-          key = cells[1].text_value[1..-2]
+          key = cells[1] ? cells[1].text_value[1..-2] : nil
           if lookup_result.is_a?(Hash)
             lookup_result[key]
           elsif lookup_result.is_a?(Array)
             options = lookup_result.first
             the_proc = lookup_result.last
-            the_proc.call(options, key, *cells[2..-1].map {|cell| cell.eval(scope)})
+            the_proc.call(options, key, *Array(cells[2..-1]).map {|cell| cell.eval(scope)})
           end
         end
       end
 
       syntax('post') do |scope, cells|