module Travis::Tools::Completion

def install_completion
  update_completion
  source = "source " << cmp_file
  RCS.each do |file|
    next unless File.exist? file and File.writable? file
    next if File.read(file).include? source
    File.open(file, "a") { |f| f.puts("", "# added by travis gem", "[ -f #{cmp_file} ] && #{source}") }
  end
end