Syntax highlighting breaking

[ddejohn]

Is this a hackmd.io issue?

• [x] Yes, the bug happens on https://hackmd.io
• [ ] No. If it's a self-hosted CodiMD instance, please fire up the issue in the repo of CodiMD: https://github.com/hackmdio/codimd

What's the problem

Syntax highlighting breaks after using a LaTeX math block.

Current behaviour

Here is syntax highlighting working: https://i.imgur.com/mWrGcbO.png

Converting the inline math to a math block breaks the highlighting for the rest of the document: https://i.imgur.com/6FipNlv.png

See line 47 in the screenshots.

Steps to reproduce

1. Put some markdown in your document.
2. Put a math block (LaTeX between double dollar signs) before the markdown.
3. Markdown syntax highlighting is broken.

I use HackMD on:

Desktop

• OS: W10
• Browser: Chrome
• Browser Version: 76.0.3809.100

It's not the end of the world, but when managing a large document, it is frustrating not having the visual aid for being able to find certain parts to edit.

[jackycute]

Hi @ddejohn, For inline math, the syntax is using single dollar sign to surround math. like:

$a = b + c$

For block math, the syntax is using double dollar sign and newlines to surround math. like:

$$
a = b + c
$$

So that the syntax highlighting will be rendered properly.

[ddejohn]

Weeelp I feel like an idiot.