The SlidesCodeHighlighter is not able to paste code with the right format into PowerPoint correctly.
When I paste code into it, it will become only 1 line.

It because PowerPoint can't treat <pre> tag correctly.
I have workaround for this. I learned from Visual Studio Code.
- Replace
\n as <br>
- Replace all the spaces as
 .
- Wrap each line in the
<div> ( don't use <pre> )