.~[foo];
---
.~[foo];
===
span .~[foo] .~[baz || quux];
---
span.~[foo].~[baz || quux];
===
span .foo .@[baz];
---
span.foo.@[baz];
===
span .foo .@[attr.baz || attr.qux];
---
span.foo.@[attr.baz || attr.qux];
===