-- in.cue --
#foo: {
	name: string
}
foo: #foo & {
    // These should all be allowed.
    _name: "foo"
    _#name: "bar"

    #name: "baz" // TODO: this should not be allowed.
}
-- out/eval --
(struct){
  #foo: (#struct){
    name: (string){ string }
  }
  foo: (#struct){
    name: (string){ string }
    _name: (string){ "foo" }
    _#name: (string){ "bar" }
    #name: (string){ "baz" }
  }
}
-- out/compile --
--- in.cue
{
  #foo: {
    name: string
  }
  foo: (〈0;#foo〉 & {
    _name: "foo"
    _#name: "bar"
    #name: "baz"
  })
}