miniblog.

I've now worked on several systems where the JSON was so big that avoiding pretty-printing was a performance win!

The literal 0xffu8 in Rust is pretty tricky to read without syntax highlighting. It looks like a plain hexadecimal value at first. (Why not have syntax highlighting? Ironically I was debugging and improving VS Code's Rust highlighting.)

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.)