bash/rvm in rvm-0.0.20 vs bash/rvm in rvm-0.0.21

@@ -1,11 +1,11 @@
 #!/bin/bash
 
 rvm_author="Wayne E. Seguin"
 rvm_author_email="[e-mail]"
 rvm_website="http://rvm.beginrescueend.com/"
-rvm_version="0.0.20"
+rvm_version="0.0.21"
 rvm_updated="2009.08.25"
 
 #
 # License: See LICENSE
 #
@@ -224,13 +224,11 @@
   done
 }
 
 function rvm-install-ruby {
 
-  local ruby_options
-  ruby_options=RUBYOPT
-  unset RUBYOPT
+  ruby_options=$RUBYOPT ; unset RUBYOPT
 
   case "$implementation" in
 
     ree)
       version=${version-1.8.6}
@@ -326,11 +324,11 @@
     ;;
     *) rvm-log-fail "Ruby implementation '$implementation' is not known."
 
   esac
 
-  if [ ! -z $ruby_options ] ; then
-    RUBYOPT="$ruby_options" ; export RUBYOPT
+  if [ ! -z "$ruby_options" ] ; then
+    RUBYOPT=$ruby_options ; export RUBYOPT
   fi
 
 }
 
 function rvm-uninstall {