Change registers to by symbols (#1178)

lib/liquid/block_body.rb

@@ -170,7 +170,7 @@ module Liquid
 
     def disable_tags(context, tags, &block)
       return yield if tags.empty?
-      context.registers['disabled_tags'].disable(tags, &block)
+      context.registers[:disabled_tags].disable(tags, &block)
     end
 
     def raise_if_resource_limits_reached(context, length)

lib/liquid/registers/disabled_tags.rb

@@ -28,5 +28,5 @@ module Liquid
     end
   end
 
-  Template.add_register('disabled_tags', DisabledTags.new)
+  Template.add_register(:disabled_tags, DisabledTags.new)
 end

lib/liquid/tag.rb

@@ -47,7 +47,7 @@ module Liquid
     end
 
     def disabled?(context)
-      context.registers['disabled_tags'].disabled?(tag_name)
+      context.registers[:disabled_tags].disabled?(tag_name)
     end
 
     def disabled_error_message

lib/liquid/template.rb

@@ -93,7 +93,7 @@ module Liquid
       end
 
       def add_register(name, klass)
-        registers[name.to_s] = klass
+        registers[name.to_sym] = klass
       end
 
       def registers