X-Git-Url: https://git.gag.com/?p=fw%2Faltos;a=blobdiff_plain;f=src%2Flisp%2Fao_lisp_const.lisp;h=861a4fc80eed91314a76453f63528fef4d21340e;hp=191ef00581ff2b602fa3a295cb1455fb2601a258;hb=12a1f6ad48f2b924f71239effeb90afca75a090f;hpb=5f8f0ed5cd5d4b4f793c602ed09f9b4bdb98f7e8

diff --git a/src/lisp/ao_lisp_const.lisp b/src/lisp/ao_lisp_const.lisp
index 191ef005..861a4fc8 100644
--- a/src/lisp/ao_lisp_const.lisp
+++ b/src/lisp/ao_lisp_const.lisp
@@ -60,10 +60,17 @@
 
 (defun caddr (l) (car (cdr (cdr l))))
 
-(defun nth (list n)
-  (cond ((= n 0) (car list))
-	((nth (cdr list) (1- n)))
-	)
+(define list-tail (lambda (x k)
+		    (if (zero? k)
+			x
+		      (list-tail (cdr x (- k 1)))
+		      )
+		    )
+  )
+
+(define list-ref (lambda (x k)
+		   (car (list-tail x k))
+		   )
   )
 
 					; simple math operators
@@ -264,6 +271,7 @@
 
 (let ((x 1)) x)
 
+(define let* let)
 					; boolean operators
 
 (define or (lexpr (l)