cdn-0020-duplicate-id

Second #id token in same {} block is dropped; first value kept; CDN-0020 warning

§6.1.1

Input

Hello {#first #second}

Output AST

- type: Paragraph
  children:
    - type: Text
      value: Hello
  attributes:
    - key: id
      value: first

Diagnostics

- code: CDN-0020
  level: warning