:ugly mode shouldn't mess with filter input.

lib/haml/precompiler.rb

@@ -303,13 +303,9 @@ END
 
     # Adds +text+ to <tt>@buffer</tt> while flattening text.
     def push_flat(line)
-      unless @options[:ugly]
-        tabulation = line.spaces - @flat_spaces
-        tabulation = tabulation > -1 ? tabulation : 0
-        @filter_buffer << "#{' ' * tabulation}#{line.unstripped}\n"
-      else
-        @filter_buffer << "#{line.unstripped}\n"
-      end
+      tabulation = line.spaces - @flat_spaces
+      tabulation = tabulation > -1 ? tabulation : 0
+      @filter_buffer << "#{' ' * tabulation}#{line.unstripped}\n"
     end
 
     # Causes <tt>text</tt> to be evaluated in the context of

test/haml/engine_test.rb

@@ -477,6 +477,13 @@ SOURCE
 END
   end
 
+  def test_ugly_filter
+    assert_equal(<<END, render(":sass\n  #foo\n    bar: baz", :ugly => true))
+#foo {
+  bar: baz; }
+END
+  end
+
   def test_local_assigns_dont_modify_class
     assert_equal("bar\n", render("= foo", :locals => {:foo => 'bar'}))
     assert_equal(nil, defined?(foo))