# File lib/vlad/mercurial.rb, line 18
  def export(revision_or_source, destination)
    revision_or_source = 'tip' if revision_or_source =~ /^head$/i
    if revision_or_source =~ /^(\d+|tip)$/i then
      "hg archive -r #{revision_or_source} -R #{repository} #{destination}"
    else
      "hg archive -R #{revision_or_source} #{destination}"
    end
  end