Uses Pry to shows undocumented methods of Ruby classes.

pry-doc_coverage.rb

require 'pry'

ObjectSpace.each_object do |o|

  o.methods(false).each do |meth|
    name = "#{o.class}##{meth}"
    result = Pry::Method.from_str(name)

    if result.nil?
      puts "#{name}"
    elsif result.source_location.nil?
      puts "#{name} (#{result.source_type})"
    end
  end

end