Context is no longer lost when moving into a Liquid FileSystem.

lib/liquid/file_system.rb

@@ -14,7 +14,7 @@ module Liquid
   # This will parse the template with a LocalFileSystem implementation rooted at 'template_path'.
   class BlankFileSystem
     # Called by Liquid to retrieve a template file
-    def read_template_file(template_path)
+    def read_template_file(context, template_name)
       raise FileSystemError, "This liquid context does not allow includes."
     end
   end
@@ -38,7 +38,8 @@ module Liquid
       @root = root
     end
     
-    def read_template_file(template_path)
+    def read_template_file(context, template_name)
+      template_path = context[template_name]
       full_path = full_path(template_path)
       raise FileSystemError, "No such template '#{template_path}'" unless File.exists?(full_path)
       

lib/liquid/tags/include.rb

@@ -25,7 +25,7 @@ module Liquid
   
     def render(context)      
       file_system = context.registers[:file_system] || Liquid::Template.file_system
-      source  = file_system.read_template_file(context[@template_name])      
+      source  = file_system.read_template_file(context, @template_name)
       partial = Liquid::Template.parse(source)      
       
       variable = context[@variable_name || @template_name[1..-2]]