diff --git a/lib/compass/sass_extensions/functions/enumerate.rb b/lib/compass/sass_extensions/functions/enumerate.rb
index 48f89f73..016aba90 100644
--- a/lib/compass/sass_extensions/functions/enumerate.rb
+++ b/lib/compass/sass_extensions/functions/enumerate.rb
@@ -1,6 +1,7 @@
 module Compass::SassExtensions::Functions::Enumerate
-  def enumerate(prefix, from, through, separator = "-")
-    selectors = (from.value..through.value).map{|i| "#{prefix.value}#{separator}#{i}"}.join(", ")
+  def enumerate(prefix, from, through, separator = nil)
+    separator ||= Sass::Script::String.new("-", :string)
+    selectors = (from.value..through.value).map{|i| "#{prefix.value}#{separator.value}#{i}"}.join(", ")
     Sass::Script::String.new(selectors)
   end
 end
\ No newline at end of file
diff --git a/test/sass_extensions_test.rb b/test/sass_extensions_test.rb
index 797e235c..20773cb4 100644
--- a/test/sass_extensions_test.rb
+++ b/test/sass_extensions_test.rb
@@ -20,12 +20,32 @@ class SassExtensionsTest < Test::Unit::TestCase
     assert_equal "a b e, a b f, a c e, a c f, a d e, a d f", nest("a", "b, c, d", "e, f")
   end
 
+  def test_enumerate
+    assert_equal ".grid-1, .grid-2, .grid-3", enumerate(".grid", 1, 3, "-")
+  end
+  
+  def test_append_selector
+    assert_equal "div.bar", append_selector("div", ".bar")
+    assert_equal ".foo1.bar1, .foo1.bar2, .foo2.bar1, .foo2.bar2", append_selector(".foo1, .foo2", ".bar1, .bar2")
+  end
+
 protected
   def evaluation_content(options)
     Sass::Script::Functions::EvaluationContext.new(options)
   end
   def nest(*arguments)
     options = arguments.last.is_a?(Hash) ? arguments.pop : Hash.new
-    evaluation_content(options).nest(*arguments.map{|a| Sass::Script::String.new(a)}).to_s
+    evaluation_content(options).nest(*arguments.map{|a| Sass::Script::String.new(a, :string)}).to_s
+  end
+  def enumerate(prefix, from, through, separator = "-", options = {})
+    prefix = Sass::Script::String.new(prefix, :string)
+    from = Sass::Script::Number.new(from)
+    through = Sass::Script::Number.new(through)
+    separator = Sass::Script::String.new(separator, :string)
+    evaluation_content(options).enumerate(prefix, from, through, separator).to_s
+  end
+  def append_selector(*arguments)
+    options = arguments.last.is_a?(Hash) ? arguments.pop : Hash.new
+    evaluation_content(options).append_selector(*arguments.map{|a| Sass::Script::String.new(a, :string)}).to_s
   end
 end