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+;;; srfi-98.scm --- An interface to access environment variables
+
+;; Copyright (C) 2009 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 2.1 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
+
+;;; Author: Julian Graham <julian.graham@aya.yale.edu>
+;;; Date: 2009-05-26
+
+;;; Commentary:
+
+;; This is an implementation of SRFI-98 (An interface to access environment 
+;; variables).
+;;
+;; This module is fully documented in the Guile Reference Manual.
+
+;;; Code:
+
+(define-module (srfi srfi-98)
+  :use-module (srfi srfi-1)
+  :export (get-environment-variable
+	   get-environment-variables))
+
+(cond-expand-provide (current-module) '(srfi-98))
+
+(define get-environment-variable getenv)
+(define (get-environment-variables)
+  (define (string->alist-entry str)
+    (let ((pvt (string-index str #\=))
+	  (len (string-length str)))
+      (and pvt (cons (substring str 0 pvt) (substring str (+ pvt 1) len)))))
+  (filter-map string->alist-entry (environ)))