cdn-0012-heading-level-out-of-range

10 or more = signs would exceed heading level 9; entire line emitted as literal Text; CDN-0012 warning

§4.2

Input

========== Too deep

Output AST

- type: Paragraph
  children:
    - type: Text
      value: ========== Too deep

Diagnostics

- code: CDN-0012
  level: warning