From a556ae6c26909c9c98018784cdd0984b1aad8921 Mon Sep 17 00:00:00 2001
From: Jay Strybis <jay.strybis@gmail.com>
Date: Thu, 7 Mar 2013 16:29:39 -0600
Subject: [PATCH] Add reverse filter

---
 lib/liquid/standardfilters.rb       | 6 ++++++
 test/liquid/standard_filter_test.rb | 4 ++++
 2 files changed, 10 insertions(+)

diff --git a/lib/liquid/standardfilters.rb b/lib/liquid/standardfilters.rb
index 651216ac..68dee294 100644
--- a/lib/liquid/standardfilters.rb
+++ b/lib/liquid/standardfilters.rb
@@ -90,6 +90,12 @@ module Liquid
       end
     end
 
+    # Reverse the elements of an array
+    def reverse(input)
+      ary = [input].flatten
+      ary.reverse
+    end
+
     # map/collect on a given property
     def map(input, property)
       ary = [input].flatten
diff --git a/test/liquid/standard_filter_test.rb b/test/liquid/standard_filter_test.rb
index 2ee7ae8d..de7f28ca 100644
--- a/test/liquid/standard_filter_test.rb
+++ b/test/liquid/standard_filter_test.rb
@@ -80,6 +80,10 @@ class StandardFiltersTest < Test::Unit::TestCase
     assert_equal [{"a" => 1}, {"a" => 2}, {"a" => 3}, {"a" => 4}], @filters.sort([{"a" => 4}, {"a" => 3}, {"a" => 1}, {"a" => 2}], "a")
   end
 
+  def test_reverse
+    assert_equal [4,3,2,1], @filters.reverse([1,2,3,4])
+  end
+
   def test_map
     assert_equal [1,2,3,4], @filters.map([{"a" => 1}, {"a" => 2}, {"a" => 3}, {"a" => 4}], 'a')
     assert_template_result 'abc', "{{ ary | map:'foo' | map:'bar' }}",