“This software is a technology created for peace and freedom.
It does not wish to serve, in any way, as a tool for oppression, suppression, human rights violations, or dictatorship.”

This project is an attempt to recreate MACLISP in 1980.
It is based on a small C Lisp interpreter and aims to provide a MACLISP-like experience.

Compile and install using:

sudo make install

This will create an executable named lisp in /usr/local/bin. Usage

Start the interpreter by running:

maclisp

Exit the interpreter by typing:

(quit)

> oblist
(NIL T PLUS DIFFERENCE MINUS TIMES QUOTIENT DIVIDE ADD1 SUB1 MAX MIN
 RECIP REMAINDER EXPT QUIT HDMP CAR CDR CONS LIST REVERSE LENGTH APPEND NCONC RPLACA RPLACD MAPLIST MAPCON MAP EQ EQUAL NULL ATOM GBC READ
 EVAL APPLY PRINT PRIN1 GREATERP LESSP ZEROP ONEP MINUSP NUMBERP FIXP
 SYMBOLP LISTP ASSOC MEMBER SET NOT QUOTE SETQ DEFUN LAMBDA MACRO IF
 BEGIN COND AND OR COMMENT)
> 

MACLISP 1980
> (defun foo (x) (x))
T
> (foo 3)
3
> 

This is not a full MACLISP implementation, but a simplified version that captures the feel of the original.

Dynamic scoping is used.

Core functions like QUOTE, ATOM, EQ, CONS, CAR, CDR, and COND are implemented.

see DOCUMENT.md