Improves index/functions - adds links to sass functions and differentiate them from Compass ones.

doc-src/content/index/functions.haml

@@ -13,12 +13,22 @@ body_id: home
         %li
           %a{:href=>"#{i.path}#function-#{f.name}"}= f.sass_signature(:html)
 
+  - sass_function_list = []
   %h1#logo All Ruby Based Functions
+  %h3 Compass Functions
   %ul
     - Sass::Script::Functions.public_instance_methods.sort_by{|m| m.to_s}.each do |m|
-      %li
       - name = m.to_s.gsub("_","-")
+      - unless name =~ /^\-compass/ # Private Fuctions!
         - if i = item_for_function_name(name)
+          %li
             %a{:href=>"#{i.path}##{name}"}= name
+        - elsif sass_functions().include? m
+          - sass_function_list << '<a href="http://sass-lang.com/docs/yardoc/Sass/Script/Functions.html#%s-instance_method">%s</a>' % [m.to_s, name]
         - else
+          %li
             = name
+  %h3 Sass Functions
+  %ul
+    - sass_function_list.each do |m|
+      %li= m

doc-src/lib/stylesheets.rb

@@ -183,6 +183,12 @@ def all_functions
   end
 end
 
+# Sass Only Functions from 3.1.10 (Brainy Betty)
+# Not as elegant, but does the trick.
+def sass_functions
+  [:rgb, :rgba, :hsl, :hsla, :red, :green, :blue, :hue, :saturation, :lightness, :alpha, :opacity, :opacify, :fade_in, :transparentize, :fade_out, :lighten, :darken, :saturate, :desaturate, :adjust_hue, :adjust_color, :scale_color, :change_color, :mix, :grayscale, :complement, :invert, :unquote, :quote, :type_of, :unit, :unitless, :comparable, :percentage, :round, :ceil, :floor, :abs, :length, :nth, :join, :append, :zip, :index, :if]
+end
+
 def example_items
   @site.cached("examples") do
     @items.select do |i|