Line numbers in the code block using Marp in VSC about marp-vscode

[icecloud-dcp]

This is a sample md file:

marp: true
theme: gaia
line-numbers: true

def test():
    a=10
    return a+10
print(test(10))

[yhatt]

The answers are all in marp-team/marp#164. In short, you always have to use Marp CLI instead of Marp for VS Code because it requires customization the Markdown conversion engine.

Marp has never supported the line-numbers directive officially, so you are probably trying to use some different Markdown flavor.