gistfile1.rb

task :quux

task :foo do |t|
  tasks = Rake.application.top_level_tasks
  args  = tasks.slice! (tasks.index(t.name) + 1)..-1

  unless args.empty?
    puts "You passed me some args! \n#{args.inspect}"
  end
end

# $ rake quux foo bar baz
# You passed me some args! 
# ["bar", "baz"]

lol