ref: 28c39e8cf0f3246bb982aff540bda5309d2c9ac0
parent: 43e8d1fbf0ae895bb09b2beb89b31f1f7440a8e2
author: JeffBezanson <jeff.bezanson@gmail.com>
date: Wed Apr 1 18:23:19 EDT 2009
fixing definition of let*
--- a/femtolisp/system.lsp
+++ b/femtolisp/system.lsp
@@ -347,12 +347,17 @@
(list 'quote v)))
(define-macro (let* binds . body)
+ (if (atom? binds) (f-body body)
+ `((lambda (,(caar binds))
+ (let* ,(cdr binds) ,@body))
+ ,(cadar binds))))
+
+(define-macro (letrec binds . body)
(cons (list 'lambda (map car binds)
(f-body
(nconc (map (lambda (b) (cons 'set! b)) binds)
body)))
(map (lambda (x) #f) binds)))
-(set-syntax! 'letrec (symbol-syntax 'let*))
(define-macro (when c . body) (list 'if c (f-body body) #f))
(define-macro (unless c . body) (list 'if c #f (f-body body)))