---
- name: Nested implicit complex keys
  from: '@perlpunk'
  tags: complex-key flow mapping sequence
  yaml: |
    ---
    [
      [ a, [ [[b,c]]: d, e]]: 23
    ]
  tree: |
    +STR
     +DOC ---
      +SEQ []
       +MAP {}
        +SEQ []
         =VAL :a
         +SEQ []
          +MAP {}
           +SEQ []
            +SEQ []
             =VAL :b
             =VAL :c
            -SEQ
           -SEQ
           =VAL :d
          -MAP
          =VAL :e
         -SEQ
        -SEQ
        =VAL :23
       -MAP
      -SEQ
     -DOC
    -STR
  dump: |
    ---
    - ? - a
        - - ? - - b
                - c
            : d
          - e
      : 23