Add raggi's change to History, remove Ruby 1.8 code from test

History.md

@@ -3,6 +3,7 @@
 ## 3.0.0 / not yet released / branch "master"
 
 * ...
+* Add a class cache to avoid runtime extend calls, see #249 [James Tucker, raggi]
 * Remove some legacy Ruby 1.8 compatibility code, see #276 [Florian Weingarten, fw42]
 * Add default filter to standard filters, see #267 [Derrick Reimer, djreimer]
 * Add optional strict parsing and warn parsing, see #235 [Tristan Hume, trishume]

lib/liquid/strainer.rb

@@ -41,8 +41,8 @@ module Liquid
       @@strainer_class_cache
     end
 
-    def self.create(context, filters = nil)
-      filters = @@filters + (filters || [])
+    def self.create(context, filters = [])
+      filters = @@filters + filters
       strainer_class_cache[filters].new(context)
     end
 

test/liquid/strainer_test.rb

@@ -55,7 +55,7 @@ class StrainerTest < Test::Unit::TestCase
     assert_kind_of Strainer, strainer
     assert_kind_of a, strainer
     assert_kind_of b, strainer
-    Strainer.send(:class_variable_get, :@@filters).each do |m|
+    Strainer.class_variable_get(:@@filters).each do |m|
       assert_kind_of m, strainer
     end
   end