add-multiple-submodules.rb

PATH = ".vim/bundle"

def github_url(user, repo)
  "http://github.com/#{user}/#{repo}.git"
end

def sh(cmd)
  print cmd
  system cmd
end

submodules = [
  'tpope/vim-speeddating', # Short syntax for GitHub repos
  'https://github.com/ecomba/vim-ruby-refactoring.git' # Long URL
]

submodules = submodules.map do |url|
  if match = url.match(/^([0-9a-zA-Z._-]+)\/([0-9a-zA-Z._-]+)$/)
    # Expand short syntax
    github_url(match[1], match[2])
  else
    url
  end
end

submodules.each do |url|
  name = url.match(/\/([0-9a-zA-Z._-]+)\.git$/)[1]
  sh "git submodule add #{url} #{File.join(PATH, name)}"
end