--- bin/jruby	2011-06-18 16:22:54.965081295 +0200
+++ bin/jruby-gil	2011-06-18 16:24:21.846081281 +0200
@@ -9,6 +9,8 @@
 #
 #   JAVA_HOME     Must point at your Java Development Kit installation.
 #
+JAVA_HOME=__JAVA__HOME__
+JRUBY_HOME=__JRUBY__HOME__
 # -----------------------------------------------------------------------------
 
 cygwin=false