Spec clarification: Are values in fontVariant & fontKerning case sensitive?

[yiyix]

In the current spec, it describes setting the font kerning value as the follows:

The fontKerning attribute's allowed keywords are as follows:
auto ..
normal ...
none ...

It doesn't say of these allowed keywords are case sensitive or case insensitive. i.e. do we accept 'Normal' as a keyword? would ctx.fontKerning = 'Normal' changes fontKerning to 'normal'? The CSS font Kerning and font variant keywords are case insensitive.

Note: The reason I bring it up is because the interop 2023 test case 2d.text.drawing.style.fontKerning.with.uppercase.html is expecting the input to be case sensitive.

[domenic]

FontKerning is defined as an IDL enumeration:

enum CanvasFontKerning { "auto", "normal", "none" };

Setting IDL enumerations to values that are not one of the defined values (e.g., "Normal") is a no-op, per https://webidl.spec.whatwg.org/#dfn-attribute-setter step 4.6.

Hope this helps!