How to display the number of the code line in the code block

[ZHULOO]

When preview the gfm markdown, it show the code block with no line number, How to display the code line number? or How to set? Thanks?

[lierdakil]

With markdown-it, you don't. And GitHub doesn't do line numbers either, so...

If you're using pandoc (you also need to select it in MPP settings), then see the docs on fenced code blocks (TL;DR: add .numberLines class). Fair warning: this is non-standard Markdown, and will basically only work with pandoc (which might be fine for your use case, I don't know)

[ZHULOO]

Thanks，I will try the pandoc.