Don't push all text in :ruby filters onto one line.

lib/haml/filters.rb

@@ -187,13 +187,13 @@ END
       def compile(precompiler, text)
         return if precompiler.options[:suppress_eval]
         precompiler.instance_eval do
-          push_silent <<-END.gsub("\n", ';')
+          push_silent <<-FIRST.gsub("\n", ';') + text + <<-LAST.gsub("\n", ';')
             _haml_old_stdout = $stdout
             $stdout = StringIO.new(_hamlout.buffer, 'a')
-            #{text}
+          FIRST
             _haml_old_stdout, $stdout = $stdout, _haml_old_stdout
             _haml_old_stdout.close
-          END
+          LAST
         end
       end
     end

test/haml/engine_test.rb

@@ -56,6 +56,7 @@ END
 A tab character was used for indentation. Haml must be indented using two spaces.
 Are you sure you have soft tabs enabled in your editor?
 END
+    "foo\n:ruby\n  1\n  2\n  3\n- raise 'foo'" => ["foo", 6],
   }
 
   User = Struct.new('User', :id)