Indentation in code blocks breaks syntax highlighting

[alexisintech]

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

unifiedjs.vscode-mdx v1.8.10

Link to runnable example

No response

Steps to reproduce

1. Create a new MDX file in VS Code
2. Copy the following code in to the document:

  ```js
  console.log('hi')
  ```

  ```js
  console.log('hi2')
  ```

Expected behavior

Code blocks should have correct syntax highlighting, as shown in the following image

Actual behavior

When indented, the syntax highlighting breaks after the end of the first code block (the last triple backtick ```)

Runtime

Other (please specify in steps to reproduce)

Package manager

No response

OS

macOS

Build and bundle tools

No response

[wooorm]

weird, cannot reproduce on https://wooorm.com/markdown-tm-language/, but can indeed reproduce in VS Code with this extension.

[remcohaszing]

The issue also appears on the markdown-tm-language playground. The version hosted on https://wooorm.com/markdown-tm-language/ is outdated.

The version on https://mdxjs.com/playground/ also uses an outdated grammar where the issue can’t be reproduced.

The issue is reproducible on https://shiki.style/.

[wooorm]

ok, think I have it