format.rb

def get_pr_text(input)
  result = input.split("\n").map do |line|
    task_regex = /((BACKEND\-[0-9]+)\.)?([\s\w]+)(\(#\d+\))?/
    regex = /(#\d+)|((BACKEND\-[0-9]+))/
    next unless line.match?(regex) #|| line.match?(merge_commit)

    if line.match?(task_regex)
      num = line.match(task_regex)[2]
      text = line.match(task_regex)[3].to_s.strip
      ya = "([#{num}](https://tracker.yandex.ru/#{num}))" if num
      "* #{text} #{ya}"
    else
      "* #{line.to_s.strip}"
    end.strip
  end.compact.uniq
  result.join("\n")
end

puts get_pr_text(ARGF.read)