preinitializer.rb

# Install
# 
# Move this file into config/preinitializer.rb
#
# Usage
# 
# This line:
#   config.github_gem "mislav-will_paginate" 
# is equivalent to this line:
#   config.gem "mislav-will_paginate", :lib => "will_paginate", :source => "http://gem.github.com"
#
# You can pass in options to override defaults such as this:
#   config.github_gem "mislav-will_paginate", :source => "http://example.com", :version => "~ 2.1"
#
# which will be equivalent to this:
#   config.gem "mislav_will_paginate", :lib => "will_paginate", :source => "http://example.com", :version => "~ 2.1"
#
# Lastly you can pass in multiple options
#   config.github_gem "mislav-will_paginate", "josevalim-inherited_resources"
#
# Using options in latter case makes no sense, since they will be apply to every gem.

class Rails::Configuration
  def github_gem(*gem_options)
    overrides = gem_options.last.is_a?(Hash) ? gem_options.pop : {}
    
    gem_options.each do |gem_name|
      self.gem(gem_name, { :lib => gem_name.split('-')[1], :source => "http://gems.github.com" }.merge(overrides))
    end
  end
  alias :github_gems :github_gem
end