class Gem::Commands::OpenCommand

def initialize
  super 'open', 'Open gem sources in editor'
  add_option('-e', '--editor EDITOR', String,
             "Opens gem sources in EDITOR") do |editor, options|
    options[:editor] = editor || get_env_editor
  end
  add_option('-v', '--version VERSION', String,
             "Opens specific gem version") do |version|
    options[:version]  = version
  end
end