From 119ce9d018ef25bf08531114ce22307306dfc212 Mon Sep 17 00:00:00 2001
From: Chris Eppstein <chris@eppsteins.net>
Date: Sun, 27 Mar 2011 21:03:14 -0700
Subject: [PATCH] Don't output transparent in css2 ouput.

Closes GH-309
---
 .../monkey_patches/browser_support.rb          | 18 ++++++++++++++++++
 test/sass_extensions_test.rb                   |  1 +
 2 files changed, 19 insertions(+)

diff --git a/lib/compass/sass_extensions/monkey_patches/browser_support.rb b/lib/compass/sass_extensions/monkey_patches/browser_support.rb
index 6dfa63d8..95d8997e 100644
--- a/lib/compass/sass_extensions/monkey_patches/browser_support.rb
+++ b/lib/compass/sass_extensions/monkey_patches/browser_support.rb
@@ -92,4 +92,22 @@ module Sass::Script
     end
   end
 
+  class String < Literal
+    def supports?(aspect)
+      aspect == "css2" && value == "transparent" && type == :identifier 
+    end
+
+    def has_aspect?
+      true
+    end
+
+    def to_css2(options = self.options)
+      if value == "transparent" && type == :identifier
+        Sass::Script::String.new("")
+      else
+        dup
+      end
+    end
+  end
+
 end
diff --git a/test/sass_extensions_test.rb b/test/sass_extensions_test.rb
index cbd75f8a..3d129d87 100644
--- a/test/sass_extensions_test.rb
+++ b/test/sass_extensions_test.rb
@@ -87,6 +87,7 @@ class SassExtensionsTest < Test::Unit::TestCase
     assert_equal "true", evaluate("blank('')")
     assert_equal "true", evaluate("blank(' ')")
     assert_equal "true", evaluate("blank(-compass-space-list(' '))")
+    assert_equal " ", evaluate("-css2(transparent linear-gradient(#fff,#000))")
   end
 
 protected