[css-fonts-4] Define `font-style` (descriptor) with `auto | <'font-style'>`

[cdoublev]

The value definition of font-weight and font-style descriptors include a non-terminal, ie. <'font-weight'> and <'font-style'> referencing the corresponding property value definition, but not font-style.

Name: font-style
For: @font-face
Value: auto | normal | italic | oblique [ <angle>{1,2} ]?

Would it be possible to define it with auto | <'font-style'>? Is it an oversight or am I missing something?

[cdoublev]

I am missing something: ranges. Sorry.