CodeMirror's hypermd syntax highlighter stops working inside a code block

Previously I have reported a bug with CodeMirror’s implementation in the Obsidian knowledge base editor.

Initially, you were hesitant to fix the issue, but eventually, after Obsidian’s developer chimed in, the issue was pinpointed to the Obsidian code and resolved. Hurray! 👍

Now I am coming to you with another issue that has to do with Obsidian and CodeMirror. I reported the bug to the Obsidian and the Admonition plugin developers, but they say that the issue is outside of their reach. I hope that you can check the bug and either fix it or tell me that the bug is not on CodeMirror’s end and thus try to convince the Obsidian/plugin developers that it’s them who should fix it.

Copy of the original bug report (please check for more comments):

How to reproduce the bug

1. Add 3 test lines inside the admonition:
2. Use Obsidian/markdown quote feature(>) on the second line. BUG: Notice that syntax highlighter stopped working on all the lines even below the quoted one.

Other interesting detail

Putting a code block returns highlighting back to normal.

Versions

• Obsidian 0.12.10
• Admonition 6.2.2

---

[nothingislost]

This appears to be a bug in the CodeMirror 5 markdown mode. You can replicate the issue on the demo site https://codemirror.net/mode/markdown/ with the following code

```markdown

Test line 1 

> Test line 2  

This is still treated as a quote  
So is this
```

This appears to happen due to the local code block mode state not being reset for quotes. Once a quote is detected on a line. Quote is set to 1 in the local mode state and never reset.

I was able to resolve this by patching the markdown.js mode to add the line: state.quote = 0; after this line https://github.com/codemirror/CodeMirror/blob/47e850575ea314f768ca8539de54ab7a6d8f3779/mode/markdown/markdown.js#L826

[mikkovedru]

@nothingislost Since it was you who discovered the solution, I think it would only be fair for you to do the honors. 😃