class Asciidoctor::PreprocessorReader

def include_processors?
  if @include_processor_extensions.nil?
    if @document.extensions? && @document.extensions.include_processors?
      !!(@include_processor_extensions = @document.extensions.include_processors)
    else
      @include_processor_extensions = false
    end
  else
    @include_processor_extensions != false
  end
end