brew/Library/Contributions/examples/brew-options.rb

compact = ARGV.include? '--compact'

ARGV.formulae.each do |f|
  f.options rescue next
  if compact
    puts f.options.collect {|o| o[0]} * " "
  else
    puts f.name
    f.options.each do |o|
      puts o[0]
      puts "\t"+o[1]
    end
    puts
  end
end