Answer by Dingus for Goodbye, Prettify. Hello highlight.js! Swapping out our Syntax Highlighter

Ruby numeric literals are not highlighted as expected

In Ruby, float, rational, and complex literals render like so:

3.5e42r6i

The expected behaviour is for the entire literal to be highlighted. For comparison, here are the same float and complex literals with Python highlighting:

3.5e46j

(Python uses j instead of i for the imaginary unit and doesn't share Ruby's literal syntax for rationals.)

Is it possibly an upstream issue?