---
- name: Block Scalar Strip [1.3]
  from: MYW6, modified for YAML 1.3
  tags: literal scalar 1.3-mod whitespace
  yaml: |
    --- |-
     ab
    ␣
    ␣
    ...
  tree: |
    +STR
     +DOC ---
      =VAL |ab
     -DOC ...
    -STR
  json: |
    "ab"
  dump: |
    --- |-
      ab
    ...