Ruby 1.9.1 bugfixes

Signed-off-by: Tobias Lütke <[email protected]>

lib/liquid/strainer.rb

@@ -1,52 +1,51 @@
 require 'set'
 
 module Liquid
-  
-  
+
   parent_object = if defined? BlankObject
     BlankObject
   else
     Object
   end
 
-  # Strainer is the parent class for the filters system. 
-  # New filters are mixed into the strainer class which is then instanciated for each liquid template render run. 
+  # Strainer is the parent class for the filters system.
+  # New filters are mixed into the strainer class which is then instanciated for each liquid template render run.
   #
-  # One of the strainer's responsibilities is to keep malicious method calls out 
+  # One of the strainer's responsibilities is to keep malicious method calls out
   class Strainer < parent_object #:nodoc:
-    INTERNAL_METHOD = /^__/ 
-    @@required_methods = Set.new([:__send__, :__id__, :respond_to?, :extend, :methods, :class])
-    
+    INTERNAL_METHOD = /^__/
+    @@required_methods = Set.new([:__send__, :respond_to?, :extend, :methods, :class, :object_id])
+
     @@filters = {}
-    
+
     def initialize(context)
       @context = context
     end
-              
+
     def self.global_filter(filter)
       raise ArgumentError, "Passed filter is not a module" unless filter.is_a?(Module)
       @@filters[filter.name] = filter
     end
-    
+
     def self.create(context)
       strainer = Strainer.new(context)
       @@filters.each { |k,m| strainer.extend(m) }
       strainer
     end
-    
+
     def respond_to?(method, include_private = false)
       method_name = method.to_s
       return false if method_name =~ INTERNAL_METHOD
       return false if @@required_methods.include?(method_name)
       super
     end
-    
-    # remove all standard methods from the bucket so circumvent security 
-    # problems 
-    instance_methods.each do |m| 
-      unless @@required_methods.include?(m.to_sym) 
+
+    # remove all standard methods from the bucket so circumvent security
+    # problems
+    instance_methods.each do |m|
+      unless @@required_methods.include?(m.to_sym)
         undef_method m
       end
-    end    
+    end
   end
 end