---
- name: Question mark at start of flow key
  from: '@ingydotnet'
  tags: flow
  yaml: |
    { ?foo: bar,
    bar: 42
    }
  tree: |
    +STR
     +DOC
      +MAP {}
       =VAL :?foo
       =VAL :bar
       =VAL :bar
       =VAL :42
      -MAP
     -DOC
    -STR
  json: |
    {
      "?foo" : "bar",
      "bar" : 42
    }
  dump: |
    ---
    ?foo: bar
    bar: 42
  emit: |
    ?foo: bar
    bar: 42