!!python/object/apply:pymdownx.slugs.slugify is removed from mkdocs.yml

[y-young]

Details

• Build URL (if applicable): https://readthedocs.org/projects/nazurin/builds/19446432/

Expected Result

mkdocs.yml retains !!python/object/apply:pymdownx.slugs.slugify tag and documentation successfully built

markdown_extensions:
  - toc:
      permalink: true
      slugify: !!python/object/apply:pymdownx.slugs.slugify
        kwds:
          case: lower

Actual Result

The tag is removed, causing build to fail:

markdown_extensions:
- toc:
    permalink: true
    slugify: null

Note

The configuration is to support TOC slugify for unicode (https://squidfunk.github.io/mkdocs-material/setup/extensions/python-markdown-extensions/?h=slugify#unicode)

https://facelessuser.github.io/pymdown-extensions/extras/slugs/

[stsewd]

Hi! This is the same issue as #8529. RTD reads the config file to inject some things, and the special yaml syntax isn't supported, so the parser will set those to null.

[y-young]

Hi, I saw the current solution here, is there any plan to support these tags in the future? Now I use build process override as a workaround.

[stsewd]

I'd +1 on a solution to just securely allow all type of tags.