`remove-notation-escape`: notation escape syntax’s normalize transformer

[sor4chi]

Clear and concise description of the problem

Hi there, thank you for this wonderful project!

Currently, when using Notation expressions such as // [!code highlight] in Shiki, and you want to render this directly to markdown code, the escape notation // [\!code highlight] is used. However, this expression doesn’t normalize, // [\!code highlight] is output as is.

Suggested solution

https://github.com/shikijs/shiki/blob/a397882fa19d267917c0f8cd59b7717118f4b89f/docs/.vitepress/config.ts#L123-L128

Alternative

Therefore, shiki's docs has created its own transformer to solve this problem. At this time, why not export it as a @shiki/transformers function, or provide built-in support for it?

Additional context

No response

Validations

• [X] Follow our Code of Conduct
• [X] Read the Contributing Guide.
• [X] Check that there isn't already an issue that request the same feature to avoid creating a duplicate.

Contributes

• [X] If this feature request is accepted, I am willing to submit a PR to fix this issue

[sor4chi]

I'd like someone's opinion on whether this should go ahead.

[antfu]

Well, feel free to send a PR! Thanks