module Roda::RodaPlugins::Head::InstanceMethods

def _roda_after_30__head(res)

content length of 0.
Always use an empty response body for head requests, with a
def _roda_after_30__head(res)
  if res && @_request.head?
    body = res[2]
    if body.respond_to?(:close)
      res[2] = CloseLater.new(body)
    else
      res[2] = EMPTY_ARRAY
    end
  end
end