git-hooks update for print info by push

update

#!/usr/bin/env ruby

refname = ARGV[0]
oldrev  = ARGV[1]
newrev  = ARGV[2]

puts "push info >> \n(#{refname}) (#{oldrev[0,6]}) (#{newrev[0,6]})"

sharevs = `git rev-list #{oldrev[0,6]}..#{newrev[0,6]}`.split("\n")
sharevs.each do |rev|
  message = `git cat-file commit #{rev} | sed '1,/^$/d'`

  committer = "?"
  messages = `git cat-file commit #{rev}`.split("\n")
  messages.each do |msg|
    committer = msg if msg.include?("committer")
  end

  puts committer
  puts message
end