Make sure that RVM is loaded before defining extras

plugins/available/rvm.plugin.bash

@@ -3,24 +3,27 @@
 # Load RVM, if you are using it
 [[ -s $HOME/.rvm/scripts/rvm ]] && source $HOME/.rvm/scripts/rvm
 
-# Load the auto-completion script if RVM was loaded.
+# Check to make sure that RVM is actually loaded before adding
+# the customizations to it.
 if [ "$rvm_path" ]
 then
+    # Load the auto-completion script if RVM was loaded.
     [[ -r $rvm_path/scripts/completion ]] && . $rvm_path/scripts/completion
+
+    switch () {
+      rvm $1
+      local v=$(rvm_version)
+      rvm wrapper $1 textmate
+      echo "Switch to Ruby version: "$v
+    }
+
+    rvm_default () {
+      rvm --default $1
+      rvm wrapper $1 textmate
+    }
+
+    function rvm_version () {
+      ruby --version
+    }
+
 fi
-
-switch () {
-  rvm $1
-  local v=$(rvm_version)
-  rvm wrapper $1 textmate
-  echo "Switch to Ruby version: "$v
-}
-
-rvm_default () {
-  rvm --default $1
-  rvm wrapper $1 textmate
-}
-
-function rvm_version () {
-  ruby --version
-}