keep-alive component (or other abstract component) ignores slot name

[wonderful-panda]

Version

2.3.4

Reproduction link

https://jsfiddle.net/f055yu68/

Steps to reproduce

Just open reproduction link

What is expected?

"foo-content" is shown at foo slot.

default-slot :  ???
foo-slot : foo content

What is actually happening?

"foo-content" is shown at default slot.
slot="foo" specification is just ignored

default-slot : foo content 
foo-slot : ???

---

slot name is stored in data, and lost at this line.

vue/src/core/vdom/create-component.js

Line 171 in 9cf6646

// abstract components do not keep anything

Is this an intentional behaviour ?

[Oscar-ren]

hi, same the condition, what about scopedSlots?

here is the demo: https://jsfiddle.net/anyvh33j/

could append the scopedSlots in the abstract component?

thanks