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What is the convention for Lisp filename extension?

".el" is the convention for filename ending with Emacs Lisp programs. What is the convention when writing Common Lisp programs, please?

Solution

  • Wikipedia and the Google Common Lisp Style guide both suggest .lisp.

    Practical Common Lisp suggests .lisp or .cl.

    Note, I'm not a Common Lisp programmer by any measure, so I have no idea if .lisp is actually used in practice.