Ioke has an interesting macro system https://olabini.com/blog/2009/01/macro-types-in-ioke-or-what-is-a-dmacro/ (essentially f-exprs AFAICS. I've accidentally implemented f-exprs in the past)
miniblog.
Related Posts
Compiler error messages is such a deep topic. Even in rustc, a mature compiler that invests effort in diagnostic quality, I find interesting issues every few months.
(The majority have been fixed pretty quickly, so it's really rewarding to file issues.)
nREPL is a really interesting protocol for developer tools. It's extensible, but one of the basic operations is eval().
If your nREPL server doesn't support a given operation, you can just send an eval request to achieve the same result!
My 3.5yo is learning to use a mouse, and it's super interesting.
He's mastered clicks and drags, but he hasn't yet figured out lifting up the mouse when run out of mouse pad. That's a tricky case where you deliberately break the relationship between mouse and cursor movement.