Remove newline from ruby filter

lib/hamlit/parser.rb

@@ -111,6 +111,7 @@ module Hamlit
     def skip_newline?(ast)
       SKIP_NEWLINE_EXPS.include?(ast.first) ||
         (ast[0..1] == [:haml, :doctype]) ||
+        (ast[0..2] == [:haml, :filter, 'ruby']) ||
         @outer_removal.include?(@current_indent)
     end
   end

spec/hamlit/filters/ruby_spec.rb

@@ -1,13 +1,11 @@
 require 'spec_helper'
 
-# FIXME: newline should be removed
 describe Hamlit::Filters::Ruby do
   it 'renders ruby filter' do
     assert_render(<<-HAML, <<-HTML)
       :ruby
       hello
     HAML
-
       hello
     HTML
   end
@@ -20,7 +18,6 @@ describe Hamlit::Filters::Ruby do
         }
       = hash[:a]
     HAML
-
       3
     HTML
   end