[css-properties-values-api] Interpolation behavior of <transform-list> and <transform-function>+

[andruud]

The spec currently says:

Note that "<transform-list>" is a pre-multiplied data type name equivalent to "<transform-function>+"

And also:

If their type is defined as a list with "+", it’s interpolated as a simple list [css3-transitions].

This means that both <transform-list> and <transform-function>+ interpolate as simple lists, and not, for example, according to Interpolation of Transforms.

We should probably specify that <transform-list>, <transform-function>+/# and <transform-function> all interpolate according to Interpolation of Transforms.

[tabatkins]

Presumably <transform-function># should interpolate as a simple list of transforms. Otherwise I agree; individual transform functions, and space-separated lists, should interpolate as transforms.

[andruud]

Fixed by 4b03d10.