pry--pry/lib/pry/commands/gem_open.rb

class Pry
  class Command::GemOpen < Pry::ClassCommand
    match 'gem-open'
    group 'Gems'
    description 'Opens the working directory of the gem in your editor'
    command_options :argument_required => true

    banner <<-BANNER
      Usage: gem-open GEM_NAME

      Change the current working directory to that in which the given gem is installed,
      and then opens your text editor.
    BANNER

    def process(gem)
      Dir.chdir(gem_spec(gem).full_gem_path) do
        Pry::Editor.invoke_editor(".", 0, false)
      end
    end

    def complete(str)
      gem_complete(str)
    end
  end

  Pry::Commands.add_command(Pry::Command::GemOpen)
end