options

# File railties/lib/commands/plugin.rb, line 780
    def options
      OptionParser.new do |o|
        o.set_summary_indent('  ')
        o.banner =    "Usage: #{@base_command.script_name} update [name [name]...]"
        o.on(         "-r REVISION", "--revision REVISION",
                      "Checks out the given revision from subversion.",
                      "Ignored if subversion is not used.") { |v| @revision = v }
        o.define_head "Update plugins."
      end
    end