How to make JRuby 1.6 default to Ruby 1.9?

Question

what is the best way to make JRuby to run in 1.9 mode by default?

i.e, I want to run rake test instead of jruby --1.9 -S rake test

<

Answer 1

When using warbler to package an app as a war file, the version can be set by running:

warble config

which creates a config/warble.rb file. This file contains lots of comments on how to configure warbler, and in particular:

  # Set JRuby to run in 1.9 mode.
  # config.webxml.jruby.compat.version = "1.9"

Uncomment the second line by removing the #, and re-package your war with the warble command.