how to selectively ignore rails / activesupport::depreciation messages

ignore_depreciations.rb

if Rails.env.production?
  # silence the deprecation warnings on Heroku
  # Thanks to: https://gist.github.com/2237443
  ActiveSupport::Deprecation.behavior = lambda do |msg, stack|
    unless /vendor\/plugins/ =~ msg
      ActiveSupport::Deprecation::DEFAULT_BEHAVIORS[:stderr].call(msg,stack) # whichever handlers you want - this is the default
    end
  end
end