From 7554c4ce611df896cc7c5393ba70577bc10d25e0 Mon Sep 17 00:00:00 2001
From: Parker Moore <parkrmoore@gmail.com>
Date: Sat, 4 May 2013 14:01:44 +0200
Subject: [PATCH 1/2] Parse strings into Time objects for date-related parsing.
 Fixes #997.

---
 lib/jekyll/filters.rb | 21 +++++++++++++++++----
 1 file changed, 17 insertions(+), 4 deletions(-)

diff --git a/lib/jekyll/filters.rb b/lib/jekyll/filters.rb
index 37d4f1cb..1886194b 100644
--- a/lib/jekyll/filters.rb
+++ b/lib/jekyll/filters.rb
@@ -30,7 +30,7 @@ module Jekyll
     #
     # Returns the formatting String.
     def date_to_string(date)
-      date.strftime("%d %b %Y")
+      time(date).strftime("%d %b %Y")
     end
 
     # Format a date in long format e.g. "27 January 2011".
@@ -39,7 +39,7 @@ module Jekyll
     #
     # Returns the formatted String.
     def date_to_long_string(date)
-      date.strftime("%d %B %Y")
+      time(date).strftime("%d %B %Y")
     end
 
     # Format a date for use in XML.
@@ -53,7 +53,7 @@ module Jekyll
     #
     # Returns the formatted String.
     def date_to_xmlschema(date)
-      date.xmlschema
+      time(date).xmlschema
     end
 
     # Format a date according to RFC-822
@@ -67,7 +67,7 @@ module Jekyll
     #
     # Returns the formatted String.
     def date_to_rfc822(date)
-      date.rfc822
+      time(date).rfc822
     end
 
     # XML escape a string for use. Replaces any special characters with
@@ -137,5 +137,18 @@ module Jekyll
         "#{array[0...-1].join(', ')}, #{connector} #{array[-1]}"
       end
     end
+
+    private
+    def time(input)
+      case input
+      when Time
+        input
+      when String
+        Time.parse(input)
+      else
+        Jekyll::Logger.error "Invalid Date:", "'#{input}' is not a valid datetime."
+        exit(1)
+      end
+    end
   end
 end

From c9bd1437a3f1f2ab37f9f4ae97a7faf351c7ad58 Mon Sep 17 00:00:00 2001
From: Parker Moore <parkrmoore@gmail.com>
Date: Sat, 4 May 2013 14:41:16 +0200
Subject: [PATCH 2/2] Testing parsing of String objects which represent times
 to Date filters

---
 test/test_filters.rb | 45 +++++++++++++++++++++++++++++++++-----------
 1 file changed, 34 insertions(+), 11 deletions(-)

diff --git a/test/test_filters.rb b/test/test_filters.rb
index 41bd242c..6af0d705 100644
--- a/test/test_filters.rb
+++ b/test/test_filters.rb
@@ -14,6 +14,7 @@ class TestFilters < Test::Unit::TestCase
     setup do
       @filter = JekyllFilter.new
       @sample_time = Time.utc(2013, 03, 27, 11, 22, 33)
+      @time_as_string = "September 11, 2001 12:46:30 -0000"
     end
 
     should "textilize with simple string" do
@@ -43,20 +44,42 @@ class TestFilters < Test::Unit::TestCase
       assert_equal "chunky, bacon, bits, and pieces", @filter.array_to_sentence_string(["chunky", "bacon", "bits", "pieces"])
     end
 
-    should "format a date with short format" do
-      assert_equal "27 Mar 2013", @filter.date_to_string(@sample_time)
-    end
+    context "date filters" do
+      context "with Time object" do
+        should "format a date with short format" do
+          assert_equal "27 Mar 2013", @filter.date_to_string(@sample_time)
+        end
 
-    should "format a date with long format" do
-      assert_equal "27 March 2013", @filter.date_to_long_string(@sample_time)
-    end
+        should "format a date with long format" do
+          assert_equal "27 March 2013", @filter.date_to_long_string(@sample_time)
+        end
 
-    should "format a time with xmlschema" do
-      assert_equal "2013-03-27T11:22:33Z", @filter.date_to_xmlschema(@sample_time)
-    end
+        should "format a time with xmlschema" do
+          assert_equal "2013-03-27T11:22:33Z", @filter.date_to_xmlschema(@sample_time)
+        end
 
-    should "format a time according to RFC-822" do
-      assert_equal "Wed, 27 Mar 2013 11:22:33 -0000", @filter.date_to_rfc822(@sample_time)
+        should "format a time according to RFC-822" do
+          assert_equal "Wed, 27 Mar 2013 11:22:33 -0000", @filter.date_to_rfc822(@sample_time)
+        end
+      end
+
+      context "with String object" do
+        should "format a date with short format" do
+          assert_equal "11 Sep 2001", @filter.date_to_string(@time_as_string)
+        end
+
+        should "format a date with long format" do
+          assert_equal "11 September 2001", @filter.date_to_long_string(@time_as_string)
+        end
+
+        should "format a time with xmlschema" do
+          assert_equal "2001-09-11T12:46:30Z", @filter.date_to_xmlschema(@time_as_string)
+        end
+
+        should "format a time according to RFC-822" do
+          assert_equal "Tue, 11 Sep 2001 12:46:30 -0000", @filter.date_to_rfc822(@time_as_string)
+        end
+      end
     end
 
     should "escape xml with ampersands" do