RE: [CSS OM] list of issues

[Daniel Glazman:]
> That's undefined at this time  But if we read the CSS OM spec with a
> strict eye, it says the second parameter of getComputedStyle() is a
> pseudo-element. "first-line" is not a pseudo-element; ":first-line" and
> "::first-line" are...

If we do read it with a strict eye then only ::before and ::after are
supported [1]...so I'd very much argue against reading this normatively 
at this point :)

[1] http://dev.w3.org/csswg/cssom/#extensions-to-the-window-interface