FExpressions

Like S-Expressions, but "operate on syntax"

In other words, the arguments are passed unevaluated.

AFAICT F-Exps, in principle, could be evaluated at run-time, not compile time. So an F-Expression language is a bit like, but not exactly like LispMacros

https://fexpr.blogspot.com/2011/04/fexpr.html