%YAML 1.1
---
- name: spec-05-03
  yaml: |
    sequence:
    - one
    - two
    mapping:
      ? sky
      : blue
      ? sea : green
  tree: |
    +STR
      +DOC
        +MAP
          =VAL :sequence
          +SEQ
            =VAL :one
            =VAL :two
          -SEQ
          =VAL :mapping
          +MAP
            =VAL :sky
            =VAL :blue
            +MAP
              =VAL :sea
              =VAL :green
            -MAP
            =VAL :
          -MAP
        -MAP
      -DOC
    -STR
- name: spec-05-03-canonical
  yaml: |
    %YAML 1.1
    ---
    !!map {
      ? !!str "sequence"
      : !!seq [
        !!str "one", !!str "two"
      ],
      ? !!str "mapping"
      : !!map {
        ? !!str "sky" : !!str "blue",
    #    ? !!str "sea" : !!str "green",
        ? !!map { ? !!str "sea" : !!str "green" } : !!null "",
      }
    }
  tree: |
    +STR
      +DOC ---
        +MAP {} <tag:yaml.org,2002:map>
          =VAL <tag:yaml.org,2002:str> "sequence
          +SEQ [] <tag:yaml.org,2002:seq>
            =VAL <tag:yaml.org,2002:str> "one
            =VAL <tag:yaml.org,2002:str> "two
          -SEQ
          =VAL <tag:yaml.org,2002:str> "mapping
          +MAP {} <tag:yaml.org,2002:map>
            =VAL <tag:yaml.org,2002:str> "sky
            =VAL <tag:yaml.org,2002:str> "blue
            +MAP {} <tag:yaml.org,2002:map>
              =VAL <tag:yaml.org,2002:str> "sea
              =VAL <tag:yaml.org,2002:str> "green
            -MAP
            =VAL <tag:yaml.org,2002:null> "
          -MAP
        -MAP
      -DOC
    -STR