module Rake::TaskManager

def generate_did_you_mean_suggestions(task_name)
  return "" unless defined?(::DidYouMean::SpellChecker)
  suggestions = ::DidYouMean::SpellChecker.new(dictionary: @tasks.keys).correct(task_name.to_s)
  if ::DidYouMean.respond_to?(:formatter)# did_you_mean v1.2.0 or later
    ::DidYouMean.formatter.message_for(suggestions)
  elsif defined?(::DidYouMean::Formatter) # before did_you_mean v1.2.0
    ::DidYouMean::Formatter.new(suggestions).to_s
  else
    ""
  end
end