Scoped slots without binding

[cathrinevaage]

What problem does this feature solve?

When you want to repeat a slot, it has to be scoped.
When you use a scoped slot, something has to be bound.
When something is bound, but never used, the eslint rule vue/no-unused-vars kicks in and raises an error or warning.

You can't both use a slot simply for repeatability and have the eslint rule active.

What does the proposed API look like?

I don't know exactly how to solve this, but there should probably be a way to mark a slot as scoped, without having to bind anything, in both parent and child component.
<span slot-scope>

Or add a new type of behaviour to slots, that allow repetition without it being scoped.
<span slot-repeatable>

[Justineo]

When you want to repeat a slot, it has to be scoped.

It's not required since 2.5.18-beta.0. Slots can be repeated now.