Rails 3.2 and yui compressor

The Rails Guide on the asset pipeline says you can use the yui-compressor on CSS with: ``` config.assets.css_compressor = :yui ``` However, I see no sign that it is actually using it. For one, thing, it makes no difference whether or not I have the yui-compressor gem installed or not. For another, compressed output is the same whether I have that line or not. I put a little debug line into `actionpack-3.2.3/lib/sprockets/compressors.rb` in the `registered_css_compressor` method, and this is the result when the css is compiled: `#<Sass::Rails::CssCompressor:0x007fdef9f9fee0>` So it appears that the config line is not being honored. Has anyone actually used this option? Update Looking in sass-rails shows that the selection is overridden: ``` if app.config.assets.compress app.config.sass.style = :compressed app.config.assets.css_compressor = CssCompressor.new end ``` If I comment that out, then it actually attempts to start the yui compressor... I'm still checking the output to see if it is correct.