[Sbcl-commits] CVS: sbcl/contrib/asdf-install installer.lisp, 1.20, 1.21

[Rudi S. <ru...@us...>]

Update of /cvsroot/sbcl/sbcl/contrib/asdf-install
In directory sc8-pr-cvs8.sourceforge.net:/tmp/cvs-serv3664/contrib/asdf-install

Modified Files:
	installer.lisp 
Log Message:
1.0.11.1: Handle set-but-empty environment variables

  ... SBCL_HOME= sbcl crashed on startup
  ... Patch by Michael Weber


Index: installer.lisp
===================================================================
RCS file: /cvsroot/sbcl/sbcl/contrib/asdf-install/installer.lisp,v
retrieving revision 1.20
retrieving revision 1.21
diff -u -d -r1.20 -r1.21
--- installer.lisp	12 Feb 2007 03:12:40 -0000	1.20
+++ installer.lisp	26 Oct 2007 04:33:34 -0000	1.21
@@ -2,8 +2,9 @@
 
 (defvar *proxy* (posix-getenv "http_proxy"))
 (defvar *cclan-mirror*
-  (or (posix-getenv "CCLAN_MIRROR")
-      "http://ftp.linux.org.uk/pub/lisp/cclan/"))
+  (let ((mirror (posix-getenv "CCLAN_MIRROR")))
+    (or (and (not (string= mirror "")) mirror)
+        "http://ftp.linux.org.uk/pub/lisp/cclan/")))
 
 (defun directorify (name)
   ;; input name may or may not have a training #\/, but we know we