scripts/alias in rvm-0.1.44 vs scripts/alias in rvm-0.1.45

@@ -57,12 +57,16 @@
     $rvm_scripts_path/log "error" "usage: 'rvm alias [alias_name] [ruby_string]'"
     result=1
   else
     if [[ -z "$rvm_alias" ]] ; then
       rvm_ruby_string="$rvm_environment_identifier"
-      rvm_expanding_aliases=1
-      __rvm_become
-      unset rvm_expanding_aliases
+      if [[ -z "$rvm_alias_expanded" ]]; then
+        rvm_expanding_aliases=1
+        __rvm_become
+        unset rvm_expanding_aliases
+      else
+        rvm_ruby_string="$rvm_environment_identifier"
+      fi
       if [[ -z "$rvm_ruby_string" ]]; then
         $rvm_scripts_path/log "error" "unknown ruby string specified"
         result=1
         return
       fi