To make comments like "/////////34//////////////" in order.

gistfile1.rb

# Created by ZHANG Hailong <[email protected]>
#
# This is a tool to serialize comments in specific style into the right order.
# For example:
#     Before
#         //////////////3//////////////////
#         //////////////6//////////////////
#         //////////////0//////////////////
#     After
#         //////////////0//////////////////
#         //////////////1//////////////////
#         //////////////2//////////////////
#

file_name = ARGV[0]
puts file_name
pre_number = 0
data = nil
open(file_name, "r") do |f|
	data = f.read
	data.gsub!(/\/+[0-9]+\/+/) do |match|
		number = match.tr('/', '')
		match.gsub!("/#{number}/", pre_number.to_s) if number != pre_number.to_s
		puts match
		pre_number += 1
		match
	end
end

open(file_name, "w") do |f|
	f.write(data)
end