Code improvements

lib/liquid/block_body.rb

@@ -154,8 +154,8 @@ module Liquid
     private
 
     def render_node(context, output, node)
-      return if node.is_a?(Tag) && node.disabled?(context, output)
-      disable_tags(context, node.is_a?(Tag) ? node.disabled_tags : nil) do
+      return if node.disabled?(context, output)
+      disable_tags(context, node.disabled_tags) do
         node.render_to_output_buffer(context, output)
       end
     rescue UndefinedVariable, UndefinedDropMethod, UndefinedFilter => e

lib/liquid/tag.rb

@@ -13,8 +13,8 @@ module Liquid
         tag
       end
 
-      def disable_nested_tags(*tags)
-        @disabled_tags = tags
+      def disable_tags(*tags)
+        disabled_tags.push(*tags)
       end
 
       private :new

lib/liquid/tags/render.rb

@@ -4,7 +4,7 @@ module Liquid
   class Render < Tag
     SYNTAX = /(#{QuotedString})#{QuotedFragment}*/o
 
-    disable_nested_tags "include"
+    disable_tags "include"
 
     attr_reader :template_name_expr, :attributes
 

lib/liquid/variable.rb

@@ -104,6 +104,14 @@ module Liquid
       output
     end
 
+    def disabled?(_context, _output)
+      false
+    end
+
+    def disabled_tags
+      []
+    end
+
     private
 
     def parse_filter_expressions(filter_name, unparsed_args)

test/integration/registers/disabled_tags_test.rb

@@ -6,11 +6,11 @@ class DisabledTagsTest < Minitest::Test
   include Liquid
 
   class DisableRaw < Block
-    disable_nested_tags "raw"
+    disable_tags "raw"
   end
 
   class DisableRawEcho < Block
-    disable_nested_tags "raw", "echo"
+    disable_tags "raw", "echo"
   end
 
   def test_disables_raw