cue import --recursive does not work for embedded multi docs yaml stream

[yujunz]

What version of CUE are you using (cue version)?

$ cue version
cue version 0.4.0 darwin/amd64

Does this issue reproduce with the latest release?

Yes

What did you do?

a: |
  foo: bar
  ---
  bar: foo

cue import --recursive stream.yaml

What did you expect to see?

Embedded yaml imported completely

What did you see instead?

Embedded yaml is truncated on first document

import yaml656e63 "encoding/yaml"

a: yaml656e63.Marshal(_cue_a)
let _cue_a = {
	foo: "bar"
}

[mpvl]

What would be the desired semantics in this case? A list of yaml documents?

It feels a bit odd that the schema would depend on the number of elements in the list.

[yujunz]

I was expecting it get imported as an array and marshal as stream, e.g.

import yaml656e63 "encoding/yaml"

a: yaml656e63.MarshalStream(_cue_a)
let _cue_a = [
	{
		foo: "bar"
	}, {
		bar: "foo"
	}]