Design a safe fragment API

[ef4]

This issue is to address the several TODOs in the section that begins with "An attractive alternative would be to allow fragments to have no element at all..."

The overall goal is to see if we can mitigate the usability risks of allowing fragments that don't require an explicit <fragment> marker in their template.

[Turbo87]

would it make sense to derive from a different base class/use a different decorator? or does this have to be defined in the template for some reason?

[ef4]

I think it's important to be able to do it from the template.

If you don't need to define any behaviors, needing to create a javascript module is a bummer. It's especially a bummer for teams that have some people who are HTML & CSS experts who don't do much javascript -- we are actually quite close to having a great tool for them, now that it's possible to control everything about the markup directly from templates.

[Turbo87]

If you don't need to define any behaviors, needing to create a javascript module is a bummer.

good point.

what are the reasons for not applying the arguments to all top-level elements in a fragment?