Ruby 1.9

[Jasper Frumau]

How can I make Ruby port 1.9 default instead of ruby 1.8.7?

FYI

jaspersmbp:etc jasper$ ruby --version
ruby 1.8.7 (2012-02-08 patchlevel 358) [i686-darwin11]

port installed | grep ruby
  rb-rubygems @1.3.7_0+ruby (active)
  ruby @1.8.7-p358_0+thread_hooks (active)
  ruby19 @1.9.3-p194_1+doc (active)

jaspersmbp:etc jasper$ port installed | grep rb19
  rb19-abstract @1.0.0_0 (active)
  rb19-actionmailer @3.0.5_0 (active)
  rb19-actionpack @3.0.5_0 (active)
  rb19-activemodel @3.0.5_0 (active)
  rb19-activerecord @3.0.5_0 (active)
  rb19-activeresource @3.0.5_0 (active)
  ------------ cut ---------------------------
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