Build in Compass support.

Gemfile

@@ -9,3 +9,4 @@ gem "haml"
 gem "sass"
 gem "RedCloth"
 gem "rdiscount"
+gem "compass"

features/compass.feature

@@ -0,0 +1,38 @@
+Feature: Compass integration
+
+  I want to integrate Compass
+  So that I can use it inside a layout
+
+Background:
+
+  Given input file "_pith/config.rb" contains
+    """
+    require 'pith/plugins/compass'
+    """
+
+Scenario: Sass template
+
+  Given input file "style.css.sass" contains
+    """
+    @import "compass/typography/links/hover-link"
+
+    a.mylink
+      @include hover-link
+    """
+
+  When I build the site
+  Then output file "style.css" should contain /a.mylink { text-decoration: none; }/
+
+Scenario: Scss template
+
+  Given input file "style.css.scss" contains
+    """
+    @import "compass/typography/links/hover-link";
+
+    a.mylink {
+      @include hover-link;
+    }
+    """
+
+  When I build the site
+  Then output file "style.css" should contain /a.mylink { text-decoration: none; }/

lib/pith/plugins/compass.rb

@@ -0,0 +1,28 @@
+require "compass"
+require "tilt/css"
+
+module Pith
+  module Compass
+
+    module Initialize
+
+      def initialize(file=nil, line=1, options={}, &block)
+        options = options.merge(::Compass.sass_engine_options)
+        super(file, line, options, &block)
+      end
+
+    end
+
+    class SassTemplate < Tilt::SassTemplate
+      include Initialize
+    end
+
+    class ScssTemplate < Tilt::ScssTemplate
+      include Initialize
+    end
+
+  end
+end
+
+Tilt.register Pith::Compass::SassTemplate, 'sass'
+Tilt.register Pith::Compass::ScssTemplate, 'scss'