prism.el VS quelpa

Heh, seriously, though, it's not necessary to use a rainbow of colors. You can use any number of colors and rotate through them. For example, this uses just 3 colors, gradually desaturating them as the depth increases. Since each color is easily distinguished from the other 2, it makes code very readable: https://github.com/alphapapa/prism.el/raw/master/images/parens-0.5.png

If you can use tree-sitter, that's obviously a good choice. Alternatively, you can see how I implemented https://github.com/alphapapa/prism.el, which isn't regexp-based, using Emacs's built-in syntax parsing instead.

I did some experimenting with supporting XML directly in https://github.com/alphapapa/prism.el/issues/16. It seems that it's not easily done with existing Emacs SGML-related functions, but I'm guessing that tree-sitter will help a lot in Emacs 29.

It's not exactly what you asked for, but you may also find this useful: https://github.com/alphapapa/prism.el It can highlight parens distinctly too.

As examples, I can recommend code in https://github.com/alphapapa/highlight-function-calls (simple) and https://github.com/alphapapa/prism.el (more complex).

There is also the package prism.el.

The best advice I can offer is to carefully and repeatedly study the Elisp manual section on font-lock, and to model on the source code of a similar project. The most I've done with it is in https://github.com/alphapapa/prism.el

There is one for emacs. Could be good inspo if someone wanted to make a VSCode version.

https://github.com/alphapapa/prism.el

You might be interested in https://github.com/alphapapa/prism.el

check out quelpa, it makes it easy.

There is another alternative if you want to install package that's not on MELPA or ELPA, it's https://github.com/quelpa/quelpa. It's using package.el so fully compatible with your current 200 packages, just only use it for package you want. Not only that, it supports to install packages from multiple SVC, not only git like straight.el

or with quelpa: