Seems like there should just be another language in the:
../wordpress/wp-content/plugins/prismatic/lib/prism/js/
folder for it. Must not be much demand for this. For me, I like to keep the console I/O snippets with a consistent look & feel as the code snippets. I think it flows better that way.
For now, what I did was to use one of the 2 smallest “language” files in there which are the “diff” or “ini” ones, and so far, no undesired keywords are getting highlighted.
Eg: https://grokshop.tv/linux-zsh-install-configure/
I guess I could add my own language js file in there, and associated hooks, but I am always leary of stuff getting blasted on “updates”.