class Gem::Commands::RebuildCommand

def get_gem_name_and_version
  args = options[:args] || []
  if args.length == 2
    gem_name, gem_version = args
  elsif args.length > 2
    raise Gem::CommandLineError, "Too many arguments"
  else
    raise Gem::CommandLineError, "Expected GEM_NAME and GEM_VERSION arguments (gem rebuild GEM_NAME GEM_VERSION)"
  end
  [gem_name, gem_version]
end