ruby2_keywords

Provides empty Module#ruby2_keywords method, for the forward source-level compatibility against ruby2.7 and ruby3.

Add this line to your application's Gemfile:

gem 'ruby2_keywords'

And then execute:

$ bundle

Or install it yourself as:

$ gem install ruby2_keywords

For class/module instance methods:

require 'ruby2_keywords'

module YourModule
  ruby2_keywords def delegating_method(*args)
    other_method(*args)
  end
end

For global methods:

require 'ruby2_keywords'

ruby2_keywords def oldstyle_keywords(options = {})
end

You can do the same for a method defined by Module#define_method:

define_method :delegating_method do |*args, &block|
  other_method(*args, &block)
end
ruby2_keywords :delegating_method

Bug reports and pull requests are welcome on GitHub or Ruby Issue Tracking System.

After checking out the repo, run bundle install to install dependencies. Then, run bundle exec rake test to run the tests.

To test on older Ruby versions, you can use docker. E.g. to test on Ruby 2.0, use docker-compose run ruby-2.0.

The gem is available as open source under the terms of the Ruby License or the 2-Clause BSD License.