Reputation: 495
How can LISP macro's be defined in terms of itself? I saw a similar definition in LISP In Small Pieces. I thought there might be a boot strapping phase where the body gets shoved into syntaxt-environment before define-macro is defined, but I couldn't find it anywhere.
Upvotes: 1
Views: 72
Reputation: 38967
If you use View git blame on this line, you can see the commit that introduced the change. Previously, define-macro
was defined in terms of the base language, using set-syntax!
.
The commit replaces this definition by a definition that uses that previous value of define-macro
, the one which was available from flisp.boot
when loading the interpreter.
Upvotes: 2