Looks like this was written in 2020, but IMO Python crossed the “fits in your brain” (or at least my brain!) threshold years earlier. Nowadays, are there any popular languages that could be described that way? Maybe Go? Or Lua?

> The f-string `f"..."` could be implemented as macro as `f!("...")`. Not quite as nice to read, but would still be useful for experimenting with.

In julia, we have a rule where a macro whose name ends with `_str` is usable as a "string macro" and it receives the input string in its raw form, and then any string macro is usable by just prefixing the name at the beginning of the string.

An example is that our regex string literal implementation is literally just

    macro r_str(s)
        Regex(s)
    end

    julia> match(r"^[ \t]+|[ \t]+$", " hi")
    RegexMatch(" ")

https://docs.julialang.org/en/v1/manual/metaprogramming/#met...