lib/clamp/parameter/parsing.rb in clamp-0.1.7 vs lib/clamp/parameter/parsing.rb in clamp-0.1.8

@@ -8,10 +8,10 @@
       def parse_parameters
 
         self.class.parameters.each do |parameter|
           begin
             value = parameter.consume(remaining_arguments)
-            send("#{parameter.attribute_name}=", value)
+            send("#{parameter.attribute_name}=", value) unless value.nil?
           rescue ArgumentError => e
             signal_usage_error "parameter '#{parameter.name}': #{e.message}"
           end
         end