Add support for collections documents to have YAML front matter ending in dots.

lib/jekyll/document.rb

@@ -210,7 +210,7 @@ module Jekyll
             @data = defaults
           end
           @content = File.read(path, merged_file_read_opts(opts))
-          if content =~ /\A(---\s*\n.*?\n?)^(---\s*$\n?)/m
+          if content =~ /\A(---\s*\n.*?\n?)^((---|\.\.\.)\s*$\n?)/m
             @content = $POSTMATCH
             data_file = SafeYAML.load($1)
             unless data_file.nil?

test/source/_methods/yaml_with_dots.md

@@ -0,0 +1,8 @@
+---
+title: "YAML with Dots"
+whatever: foo.bar
+...
+
+Use `{{ page.title }}` to build a full configuration for use w/Jekyll.
+
+Whatever: {{ page.whatever }}

test/test_collections.rb

@@ -138,6 +138,7 @@ class TestCollections < Test::Unit::TestCase
           _methods/site/generate.md
           _methods/site/initialize.md
           _methods/um_hi.md
+          _methods/yaml_with_dots.md
         ], doc.relative_path
       end
     end

test/test_document.rb

@@ -44,6 +44,26 @@ class TestDocument < Test::Unit::TestCase
       }, @document.data)
     end
 
+    context "with YAML ending in three dots" do
+
+      setup do
+        @site = Site.new(Jekyll.configuration({
+          "collections" => ["methods"],
+          "source"      => source_dir,
+          "destination" => dest_dir
+        }))
+        @site.process
+        @document = @site.collections["methods"].docs.last
+      end
+
+      should "know its data" do
+        assert_equal({
+          "title" => "YAML with Dots",
+          "whatever" => "foo.bar"
+          }, @document.data)
+      end
+    end
+
     should "output the collection name in the #to_liquid method" do
       assert_equal @document.to_liquid['collection'], "methods"
     end