bug#4204: 23.1; css-mode does not syntax highlight new CSS3 pseudo-classes

[Gareth Rees]

Revision 3 of the Cascading Style Sheets specification [1] introduces  
new pseudo-classes for use in selector expressions,  
including :target, :enabled, :disabled, :root, :nth-child(...).

It would be nice if css-mode in Emacs could provide syntax  
highlighting for these new pseudo-classes.

(There are other new features in CSS3 that it would be nice to  
highlight, such as pseudo-elements ::first-letter and ::first-line.)

--
Gareth Rees

[1] http://www.w3.org/TR/css3-selectors/