> SBCL, is written in C SBCL is written in C, a bit assembly and most of the code is written in Common Lisp. For example the compiler which generates native c

> SBCL, is written in C SBCL is written in C, a bit assembly and most of the code is written in Common Lisp. For example the compiler which generates native code for various processors is written in Common Lisp. A lot of code can be written from Common Lisp, which calls external OS routines via Foreign Function Calls. Thus there is not much C-based glue code needed. In GNU Emacs the execution engine running the byte code is written C. The byte code compiler is written in Emacs Lisp.