[Compass Core] Added a color-stop function to simplify the creation of gradients with multiple stop points.

lib/compass/sass_extensions/functions.rb

@@ -1,7 +1,7 @@
 module Compass::SassExtensions::Functions
 end
 
-%w(selectors enumerate urls display inline_image).each do |func|
+%w(selectors enumerate urls display inline_image color_stop).each do |func|
   require "compass/sass_extensions/functions/#{func}"
 end
 
@@ -11,6 +11,7 @@ module Sass::Script::Functions
   include Compass::SassExtensions::Functions::Urls
   include Compass::SassExtensions::Functions::Display
   include Compass::SassExtensions::Functions::InlineImage
+  include Compass::SassExtensions::Functions::ColorStop
 end
 
 # Wierd that this has to be re-included to pick up sub-modules. Ruby bug?

lib/compass/sass_extensions/functions/color_stop.rb

@@ -0,0 +1,10 @@
+module Compass::SassExtensions::Functions::ColorStop
+  def color_stop(*args)
+    raise Sass::SyntaxError, "An even number of arguments must be passed to color-stop()" unless args.size % 2 == 0
+    stops = []
+    while args.size > 0
+      stops << "color-stop(#{args.shift}, #{args.shift})"
+    end
+    Sass::Script::String.new(stops.join(", "))
+  end
+end