flatten doesn't work without expand

[jenrik]

Enabling flatten does nothing when expand is disabled
Tested with the following settings

{
  copy: {
    css: {
      expand: false,
      flatten: true,
      src: [
        'bower_components/normalize-css/normalize.css'
      ],
      dest: 'source/css/vendor/'
    }
  }
}

[dkurucz]

Glad to see this issue is getting some attention, having the same problem myself...

[ururk]

This happens to me as well

[aderowbotham]

Nowhere is it explained what 'expand' does. Every example has expand: true. What does expand mean?