Comment by measurablefunc

Syntax highlighting is a type of abstract interpretation¹. The author wants to customize it which makes sense & most text editors do have enough programmability to make that possible as long as you are willing to write your own abstract interpreter. Presumably it should also be possible to take the syntax specification along w/ a description of a language runtime & let an AI agent automatically generate custom abstract interpreters. This is not currently possible but might be in a few years if AI labs focus on technical advancement instead of whatever OpenAI has been focusing on recently w/ media synthesis.

¹https://www.cs.cmu.edu/~emc/15817-s11/lect-2011-03-23.pdf