[css-syntax] Scientific notation: not on dimension and percentage?

Hi,

Syntax 3 adds scientific notation on number tokens. IIRC this is for 
compatibility with SVG, but it was mentioned on this list that SVG also 
allow scientific notation on percentages and dimension tokens. Should 
CSS do that too?

By the way, I just fixed the railroad diagrams which were inconsistent 
with the normative text:

https://dvcs.w3.org/hg/csswg/rev/b7a6a835b24f
http://dev.w3.org/csswg/css-syntax/#token-diagrams

But we might want to reverse that and fix the normative text instead.

-- 
Simon Sapin