#!/usr/bin/env ruby
require 'yaml'

filenames = ARGV

filenames.each do |filename|
  msync = YAML.safe_load(File.read(filename)).reject{ |k,v| k == '.travis.yml' }
  if msync.any?
    File.write(filename, YAML.dump(msync))
  else
    File.unlink(filename)
  end
end