diff --git a/lib/jekyll/tags/highlight.rb b/lib/jekyll/tags/highlight.rb
index e16602a7..b36a8a01 100644
--- a/lib/jekyll/tags/highlight.rb
+++ b/lib/jekyll/tags/highlight.rb
@@ -1,77 +1,77 @@
 module Jekyll
+  module Tags
+    class HighlightBlock < Liquid::Block
+      include Liquid::StandardFilters
 
-  class HighlightBlock < Liquid::Block
-    include Liquid::StandardFilters
+      # The regular expression syntax checker. Start with the language specifier.
+      # Follow that by zero or more space separated options that take one of two
+      # forms:
+      #
+      # 1. name
+      # 2. name=value
+      SYNTAX = /^([a-zA-Z0-9.+#-]+)((\s+\w+(=\w+)?)*)$/
 
-    # The regular expression syntax checker. Start with the language specifier.
-    # Follow that by zero or more space separated options that take one of two
-    # forms:
-    #
-    # 1. name
-    # 2. name=value
-    SYNTAX = /^([a-zA-Z0-9.+#-]+)((\s+\w+(=\w+)?)*)$/
-
-    def initialize(tag_name, markup, tokens)
-      super
-      if markup.strip =~ SYNTAX
-        @lang = $1
-        @options = {}
-        if defined?($2) && $2 != ''
-          $2.split.each do |opt|
-            key, value = opt.split('=')
-            if value.nil?
-              if key == 'linenos'
-                value = 'inline'
-              else
-                value = true
+      def initialize(tag_name, markup, tokens)
+        super
+        if markup.strip =~ SYNTAX
+          @lang = $1
+          @options = {}
+          if defined?($2) && $2 != ''
+            $2.split.each do |opt|
+              key, value = opt.split('=')
+              if value.nil?
+                if key == 'linenos'
+                  value = 'inline'
+                else
+                  value = true
+                end
               end
+              @options[key] = value
             end
-            @options[key] = value
           end
+        else
+          raise SyntaxError.new("Syntax Error in 'highlight' - Valid syntax: highlight <lang> [linenos]")
         end
-      else
-        raise SyntaxError.new("Syntax Error in 'highlight' - Valid syntax: highlight <lang> [linenos]")
       end
-    end
 
-    def render(context)
-      if context.registers[:site].pygments
-        render_pygments(context, super)
-      else
-        render_codehighlighter(context, super)
+      def render(context)
+        if context.registers[:site].pygments
+          render_pygments(context, super)
+        else
+          render_codehighlighter(context, super)
+        end
       end
+
+      def render_pygments(context, code)
+        @options[:encoding] = 'utf-8'
+
+        output = add_code_tags(
+          Pygments.highlight(code, :lexer => @lang, :options => @options),
+          @lang
+        )
+
+        output = context["pygments_prefix"] + output if context["pygments_prefix"]
+        output = output + context["pygments_suffix"] if context["pygments_suffix"]
+        output
+      end
+
+      def render_codehighlighter(context, code)
+        #The div is required because RDiscount blows ass
+        <<-HTML
+  <div>
+    <pre><code class='#{@lang}'>#{h(code).strip}</code></pre>
+  </div>
+        HTML
+      end
+
+      def add_code_tags(code, lang)
+        # Add nested <code> tags to code blocks
+        code = code.sub(/<pre>/,'<pre><code class="' + lang + '">')
+        code = code.sub(/<\/pre>/,"</code></pre>")
+      end
+
     end
-
-    def render_pygments(context, code)
-      @options[:encoding] = 'utf-8'
-
-      output = add_code_tags(
-        Pygments.highlight(code, :lexer => @lang, :options => @options),
-        @lang
-      )
-
-      output = context["pygments_prefix"] + output if context["pygments_prefix"]
-      output = output + context["pygments_suffix"] if context["pygments_suffix"]
-      output
-    end
-
-    def render_codehighlighter(context, code)
-      #The div is required because RDiscount blows ass
-      <<-HTML
-<div>
-  <pre><code class='#{@lang}'>#{h(code).strip}</code></pre>
-</div>
-      HTML
-    end
-
-    def add_code_tags(code, lang)
-      # Add nested <code> tags to code blocks
-      code = code.sub(/<pre>/,'<pre><code class="' + lang + '">')
-      code = code.sub(/<\/pre>/,"</code></pre>")
-    end
-
   end
-
 end
 
-Liquid::Template.register_tag('highlight', Jekyll::HighlightBlock)
+Liquid::Template.register_tag('highlight', Jekyll::Tags::HighlightBlock)
diff --git a/lib/jekyll/tags/include.rb b/lib/jekyll/tags/include.rb
index e71d07f7..3c2fa984 100644
--- a/lib/jekyll/tags/include.rb
+++ b/lib/jekyll/tags/include.rb
@@ -1,37 +1,37 @@
 module Jekyll
-
-  class IncludeTag < Liquid::Tag
-    def initialize(tag_name, file, tokens)
-      super
-      @file = file.strip
-    end
-
-    def render(context)
-      includes_dir = File.join(context.registers[:site].source, '_includes')
-
-      if File.symlink?(includes_dir)
-        return "Includes directory '#{includes_dir}' cannot be a symlink"
+  module Tags
+    class IncludeTag < Liquid::Tag
+      def initialize(tag_name, file, tokens)
+        super
+        @file = file.strip
       end
 
-      if @file !~ /^[a-zA-Z0-9_\/\.-]+$/ || @file =~ /\.\// || @file =~ /\/\./
-        return "Include file '#{@file}' contains invalid characters or sequences"
-      end
+      def render(context)
+        includes_dir = File.join(context.registers[:site].source, '_includes')
 
-      Dir.chdir(includes_dir) do
-        choices = Dir['**/*'].reject { |x| File.symlink?(x) }
-        if choices.include?(@file)
-          source = File.read(@file)
-          partial = Liquid::Template.parse(source)
-          context.stack do
-            partial.render(context)
+        if File.symlink?(includes_dir)
+          return "Includes directory '#{includes_dir}' cannot be a symlink"
+        end
+
+        if @file !~ /^[a-zA-Z0-9_\/\.-]+$/ || @file =~ /\.\// || @file =~ /\/\./
+          return "Include file '#{@file}' contains invalid characters or sequences"
+        end
+
+        Dir.chdir(includes_dir) do
+          choices = Dir['**/*'].reject { |x| File.symlink?(x) }
+          if choices.include?(@file)
+            source = File.read(@file)
+            partial = Liquid::Template.parse(source)
+            context.stack do
+              partial.render(context)
+            end
+          else
+            "Included file '#{@file}' not found in _includes directory"
           end
-        else
-          "Included file '#{@file}' not found in _includes directory"
         end
       end
     end
   end
-
 end
 
-Liquid::Template.register_tag('include', Jekyll::IncludeTag)
+Liquid::Template.register_tag('include', Jekyll::Tags::IncludeTag)
diff --git a/lib/jekyll/tags/post_url.rb b/lib/jekyll/tags/post_url.rb
index 21d3a0b4..ff4a29b8 100644
--- a/lib/jekyll/tags/post_url.rb
+++ b/lib/jekyll/tags/post_url.rb
@@ -1,38 +1,39 @@
 module Jekyll
+  module Tags
+    class PostComparer
+      MATCHER = /^(.+\/)*(\d+-\d+-\d+)-(.*)$/
 
-  class PostComparer
-    MATCHER = /^(.+\/)*(\d+-\d+-\d+)-(.*)$/
+      attr_accessor :date, :slug
 
-    attr_accessor :date, :slug
-
-    def initialize(name)
-      who, cares, date, slug = *name.match(MATCHER)
-      @slug = slug
-      @date = Time.parse(date)
-    end
-  end
-
-  class PostUrl < Liquid::Tag
-    def initialize(tag_name, post, tokens)
-      super
-      @orig_post = post.strip
-      @post = PostComparer.new(@orig_post)
+      def initialize(name)
+        who, cares, date, slug = *name.match(MATCHER)
+        @slug = slug
+        @date = Time.parse(date)
+      end
     end
 
-    def render(context)
-      site = context.registers[:site]
-      
-      site.posts.each do |p|
-        if p == @post
-          return p.url
-        end
+    class PostUrl < Liquid::Tag
+      def initialize(tag_name, post, tokens)
+        super
+        @orig_post = post.strip
+        @post = PostComparer.new(@orig_post)
       end
 
-      puts "ERROR: post_url: \"#{@orig_post}\" could not be found"
+      def render(context)
+        site = context.registers[:site]
 
-      return "#"
+        site.posts.each do |p|
+          if p == @post
+            return p.url
+          end
+        end
+
+        puts "ERROR: post_url: \"#{@orig_post}\" could not be found"
+
+        return "#"
+      end
     end
   end
 end
 
-Liquid::Template.register_tag('post_url', Jekyll::PostUrl)
+Liquid::Template.register_tag('post_url', Jekyll::Tags::PostUrl)
diff --git a/test/test_tags.rb b/test/test_tags.rb
index 3d5e80e4..3d97410b 100644
--- a/test/test_tags.rb
+++ b/test/test_tags.rb
@@ -39,7 +39,7 @@ CONTENT
 
   context "language name" do
     should "match only the required set of chars" do
-      r = Jekyll::HighlightBlock::SYNTAX
+      r = Jekyll::Tags::HighlightBlock::SYNTAX
       assert_match r, "ruby"
       assert_match r, "c#"
       assert_match r, "xml+cheetah"
@@ -55,19 +55,19 @@ CONTENT
 
   context "initialized tag" do
     should "work" do
-      tag = Jekyll::HighlightBlock.new('highlight', 'ruby ', ["test", "{% endhighlight %}", "\n"])
+      tag = Jekyll::Tags::HighlightBlock.new('highlight', 'ruby ', ["test", "{% endhighlight %}", "\n"])
       assert_equal({}, tag.instance_variable_get(:@options))
 
-      tag = Jekyll::HighlightBlock.new('highlight', 'ruby linenos ', ["test", "{% endhighlight %}", "\n"])
+      tag = Jekyll::Tags::HighlightBlock.new('highlight', 'ruby linenos ', ["test", "{% endhighlight %}", "\n"])
       assert_equal({ 'linenos' => 'inline' }, tag.instance_variable_get(:@options))
 
-      tag = Jekyll::HighlightBlock.new('highlight', 'ruby linenos=table ', ["test", "{% endhighlight %}", "\n"])
+      tag = Jekyll::Tags::HighlightBlock.new('highlight', 'ruby linenos=table ', ["test", "{% endhighlight %}", "\n"])
       assert_equal({ 'linenos' => 'table' }, tag.instance_variable_get(:@options))
 
-      tag = Jekyll::HighlightBlock.new('highlight', 'ruby linenos=table nowrap', ["test", "{% endhighlight %}", "\n"])
+      tag = Jekyll::Tags::HighlightBlock.new('highlight', 'ruby linenos=table nowrap', ["test", "{% endhighlight %}", "\n"])
       assert_equal({ 'linenos' => 'table', 'nowrap' => true }, tag.instance_variable_get(:@options))
 
-      tag = Jekyll::HighlightBlock.new('highlight', 'ruby linenos=table cssclass=hl', ["test", "{% endhighlight %}", "\n"])
+      tag = Jekyll::Tags::HighlightBlock.new('highlight', 'ruby linenos=table cssclass=hl', ["test", "{% endhighlight %}", "\n"])
       assert_equal({ 'cssclass' => 'hl', 'linenos' => 'table' }, tag.instance_variable_get(:@options))
     end
   end