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+;;; Guile R5RS
+
+;; Copyright (C) 2001 Free Software Foundation, Inc.
+
+;;;; This library is free software; you can redistribute it and/or
+;;;; modify it under the terms of the GNU Lesser General Public
+;;;; License as published by the Free Software Foundation; either
+;;;; version 3 of the License, or (at your option) any later version.
+;;;; 
+;;;; This library is distributed in the hope that it will be useful,
+;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+;;;; Lesser General Public License for more details.
+;;;; 
+;;;; You should have received a copy of the GNU Lesser General Public
+;;;; License along with this library; if not, write to the Free Software
+;;;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+
+;;; Code:
+
+(define-module (language r5rs spec)
+  #:use-module (system base language)
+  #:use-module (language r5rs expand)
+  #:use-module (language r5rs translate)
+  #:export (r5rs))
+
+
+;;;
+;;; Translator
+;;;
+
+(define (translate x) (if (pair? x) (translate-pair x) x))
+
+(define (translate-pair x)
+  (let ((head (car x)) (rest (cdr x)))
+    (case head
+      ((quote) (cons '@quote rest))
+      ((define set! if and or begin)
+       (cons (symbol-append '@ head) (map translate rest)))
+      ((let let* letrec)
+       (cons* (symbol-append '@ head)
+	      (map (lambda (b) (cons (car b) (map translate (cdr b))))
+		   (car rest))
+	      (map translate (cdr rest))))
+      ((lambda)
+       (cons* '@lambda (car rest) (map translate (cdr rest))))
+      (else
+       (cons (translate head) (map translate rest))))))
+
+
+;;;
+;;; Language definition
+;;;
+
+(define-language r5rs
+  #:title	"Standard Scheme (R5RS + syntax-case)"
+  #:version	"0.3"
+  #:reader	read
+  #:expander	expand
+  #:translator	translate
+  #:printer	write
+;;  #:environment	(global-ref 'Language::R5RS::core)
+  )