module Middleman::Util

def step_through_extensions(path)
  while (ext = File.extname(path))
    break if ext.empty? || !::Middleman::Util.tilt_class(ext)
    yield ext if block_given?
    # Strip templating extensions as long as Tilt knows them
    path = path[0..-(ext.length + 1)]
  end
  yield ::File.extname(path) if block_given?
  path
end