Troy Hinckley writes: > Po Lu already provided one; Emacs needs to support old platforms like MS-DOS. So that rules out LLVM. GCCrs might help with that: https://rust-gcc.github.io/ Once that’s released and stable in GCC, Rust is finally safe to use for those who want at least two independent implementations (like me). > Are there others? There was a point about complexity: adding another language besides C and elisp increases complexity for contributors and maintainers a lot. Also the gains from memory safety are much lower than for much other software, because in Emacs memory-safety is already provided by elisp. Best wishes, Arne -- Unpolitisch sein heißt politisch sein, ohne es zu merken. draketo.de