Rakefile

namespace :git do
  desc "hack"
  task :hack, [:target_branch] do |t, args|
    require 'git'

    # assume current working directory
    g = Git.open('.')
    args.with_defaults(:target_branch => "master")
    current_branch = g.current_branch
    `git checkout #{args.target_branch}`
    `git pull origin #{args.target_branch}`
    `git checkout #{current_branch}`
    `git rebase #{args.target_branch}`
  end

  desc "ship"
  task :ship, [:target_branch] do |t, args|
    require 'git'

    # assume current working directory
    g = Git.open('.')
    args.with_defaults(:target_branch => "master")
    current_branch = g.current_branch
    `git checkout #{args.target_branch}`
    `git merge #{current_branch}`
    `git push origin #{args.target_branch}`
    `git checkout #{current_branch}`
  end
end