New line displayed as "âŠ" in Prism.js

Oh now wen you mention it, I see those weird line endings, in my test on localhost too (in a slightly different color, so bright that I didn't notice first).

That's because of the Prism.js CSS file, here: https://cdnjs.cloudflare.com/ajax/libs/prism/0.0.1/prism.min.css

That looks like an old version of Prism: the version number is 0.0.1, however Prism's most recent version, is 1.15.0.

That old prism.min.css file contains this: (I added line breaks)

.token.tab:not(:empty):before{content:'â–¸'}
.token.cr:before{content:'␍'}
.token.lf:before{content:'␊'}

which to me looks like characters displayed in the wrong charset somehow, or symbols the browser doesn't know how to display. And I suppose those characters are arrows representing tabs and line breaks, maybe sth like --> for tabs, and:

    |
  <-`

for line breaks.

Ok, so the solution is to use the most recent version of Prism.js :- )
Instead of using the contents from these files:

https://cdnjs.cloudflare.com/ajax/libs/prism/0.0.1/prism.min.css
https://cdnjs.cloudflare.com/ajax/libs/prism/0.0.1/prism.min.js

Go here: https://prismjs.com/, click Download, optionally configure Prism to look like you want it to (e.g. line numbers? copy-to-clipboard button? ... in the Plugins section a bit below), then scroll down to the bottom, and click Download JS and Download CSS, and copy-paste the contents of the files you'll download, into the JS and CSS fields. (And don't forget to delete the old CSS and JS ... except for the talkyard.postElemPostProcessor = ... at the end)

(I tested, and the weird line ending chars then disappeared for me.)