class Gem::Commands::OpenCommand

def initialize
  super "open", "Open gem sources in editor"
  add_option("-e", "--editor COMMAND", String,
             "Prepends COMMAND to gem path. Could be used to specify editor.") do |command, options|
    options[:editor] = command || get_env_editor
  end
  add_option("-v", "--version VERSION", String,
             "Opens specific gem version") do |version|
    options[:version] = version
  end
end