Footnotes do not work within mermaid diagrams

[lschierer]

Initial checklist

• I read the support docs
• I read the contributing guide
• I agree to follow the code of conduct
• I searched issues and couldn’t find anything (or linked relevant results below)

Affected packages and versions

"remark-rehype": "^10.0.0", "rehype-mermaidjs": "^1.0.1", "remark-gfm": "^3.0.1",

Link to runnable example

https://stackblitz.com/edit/github-3bxwan

Steps to reproduce

See the runnable example in stackblitz, however I initially hit this in a project using astro with tsc to build the typescript.

Expected behavior

the footnotes should work globally, because the gfm plugin should have processed first.

Actual behavior

the footnotes only work outside the mermaid diagram.

Runtime

Node v17, Node v16

Package manager

npm 8, pnpm

OS

macOS

Build and bundle tools

Vite, Other (please specify in steps to reproduce)

[ChristianMurphy]

Welcome @lschierer! 👋
Codeblocks including mermaid do cannot have inner markdown.
Including references and footnotes.
This is by design, and how GFM works.