[css-grid] Computed value of grid-template: subgrid

In the current ED, the definition of the grid-template-columns and 
grid-template-rows properties contains, about the 'subgrid' value:

> If the grid container is not a grid item, this value computes to
> none.

Can we make this a used-value-time thing rather than a 
computed-value-time thing? Determining that an element generates a grid 
item depends on box generation, which normally comes "after" computed 
values are determined.


In general, I’d prefer if we avoid to gratuitously have this kind of 
modification on computed values, unless we really mean to affect the 
inherited value.

-- 
Simon Sapin

Received on Tuesday, 25 March 2014 16:31:40 UTC