[$] Using Common Lisp in Emacs

Lispis one of the oldest programming languages still in use today, but it has evolved in multiple directions over its more than 60-year history. Two ofthe more prominent descendants, Common Lisp and Emacs Lisp (or Elisp),are fairly closely related at some level, but there is still something of adivide between them. Some recent discussion in the emacs-devel mailinglist have shown that some elements from Common Lisp are not completelywelcome in Elisp-at least in the code that is maintained by the Emacs project itself.