cmd/cue: multi-byte characters in YAML result in bad formatting

[cueckoo]

Originally opened by @uhthomas in cuelang/cue#826

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

$ cue version
cue version v0.3.0-beta.5 linux/amd64

Does this issue reproduce with the latest release?

Yes.

What did you do?

curl -Lfv https://github.com/jetstack/cert-manager/releases/download/v1.2.0/cert-manager.yaml > t.yaml
cue import --list t.yaml

What did you expect to see?

A nicely formatted CUE file.

What did you see instead?

[cueckoo]

Original reply by @uhthomas in cuelang/cue#826 (comment)

Another example

[cueckoo]

Original reply by @myitcv in cuelang/cue#826 (comment)

Confirmed with 7c5d28e

[mpvl]

Formatting looks fine to me. A more specific example is welcome.

[uhthomas]

@mpvl Sorry, I must not have seen your comment.

Given https://github.com/cert-manager/cert-manager/releases/download/v1.11.0/cert-manager.crds.yaml

❯ cue import --list cert-manager.yaml

Produces https://gist.github.com/uhthomas/da3842ef5880be0e26f05a00272a3ae4

The formatting is initially fine, but then looks really weird around here: https://gist.github.com/uhthomas/da3842ef5880be0e26f05a00272a3ae4#file-cert-manager-cue-L3081

apiVersion:
	"apiextensions.k8s.io/v1", kind:
	"CustomResourceDefinition", metadata: {

	name: "certificaterequests.cert-manager.io"
	labels: {
		app:                          "cert-manager"
		"app.kubernetes.io/name":     "cert-manager"
		"app.kubernetes.io/instance": "cert-manager"
		// Generated labels
		"app.kubernetes.io/version": "v1.11.0"
	}
}, spec: {

	group: "cert-manager.io"

I hope it's clear that something is wrong here.