Rakefile

require 'bundler/gem_tasks'
require 'md2man/rakefile'
require 'md2man/roff/engine'
require 'md2man/html/engine'
require 'yard'

# Override markdown engine to add extra parameter
[Md2Man::Roff, Md2Man::HTML].each do |mod|
  mod.send(:remove_const, :ENGINE)
  mod.send(:const_set, :ENGINE, Redcarpet::Markdown.new(mod.const_get(:Engine),
                                                        tables: true,
                                                        autolink: true,
                                                        superscript: true,
                                                        strikethrough: true,
                                                        no_intra_emphasis: false,
                                                        fenced_code_blocks: true,

                                                        # This option is needed for command options to be rendered property
                                                        disable_indented_code_blocks: true))
end

YARD::Rake::YardocTask.new do |t|
  t.files   = ['lib/**/*.rb']
  t.options = [
    '--protected',
    "--output-dir=#{ENV['YARD_OUTPUT'] || 'html_doc'}"
  ]
end