order_smacss_properties.rb

#!/usr/bin/env ruby

# http://smacss.com/

# Box
# Border
# Background
# Text
# Other

properties = {
  box: %w(display float position left top height width),
  border: %w(border),
  background: %w(background),
  text: %w(font color text letter)
}

new_order = Hash.new { [] }

ARGF.each do |line|
  property = line.split(/:/)[0].strip
  key = (properties.find { |k, v| v.include?(property) } || [:other]).first
  new_order[key] = new_order[key].push(line.chomp)
end

puts (properties.keys + [:other]).map { |key| "/* #{key} */\n" + new_order[key].sort.join("\n") }.join("\n\n")