requireでオプションを指定できるといいなーと思った

hello.rb

$options = { you: nil }.merge $options || {}

if $options[:you]
  puts "hello #{$options[:you]}"
else
  puts "hello guest"
end

require_options.rb

# $ ruby require_options.rb # => hello pasberth
# $ ruby hello.rb # => hello guest

alias require_options_original_require require

def require path, options={}
  $options = options
  require_options_original_require path
ensure
  $options = nil
end

require "./hello", you: 'pasberth'