There have been a few efforts at writing an Emacs JIT — the original one, Burton Samograd’s, and also Nick LLoyd’s. So, what else to do except write my own? Like the latter two, I based mine on GNU libjit. I did look at a few other JIT libraries: LLVM, gcc-jit, GNU Lightning, MyJit. libjit seemed like a nice middle ground between a JIT with heavy runtime costs (LLVM, GCC) and one that is too ligh