From: David Vázquez <davazp@gmail.com>
Date: Sun, 23 Jun 2013 00:37:23 +0000 (+0200)
Subject: NTH-VALUE macro
X-Git-Url: http://repo.macrolet.net/gitweb/?a=commitdiff_plain;h=5b3421abce6203fd73ac298f1fbba783abaeab5f;p=jscl.git

NTH-VALUE macro
---

diff --git a/src/boot.lisp b/src/boot.lisp
index d045186..3541b23 100644
--- a/src/boot.lisp
+++ b/src/boot.lisp
@@ -542,3 +542,8 @@
 
 (defun error (fmt &rest args)
   (%throw (apply #'format nil fmt args)))
+
+(defmacro nth-value (n form)
+  `(multiple-value-call (lambda (&rest values)
+                          (nth ,n values))
+     ,form))