# File lib/mechanize.rb, line 361
  def post(url, query={}, headers={})
    if query.is_a?(String)
      return request_with_entity(:post, url, query, :headers => headers)
    end
    node = {}
    # Create a fake form
    class << node
      def search(*args); []; end
    end
    node['method'] = 'POST'
    node['enctype'] = 'application/x-www-form-urlencoded'

    form = Form.new(node)
    query.each { |k,v|
      if v.is_a?(IO)
        form.enctype = 'multipart/form-data'
        ul = Form::FileUpload.new({'name' => k.to_s},::File.basename(v.path))
        ul.file_data = v.read
        form.file_uploads << ul
      else
        form.fields << Form::Field.new({'name' => k.to_s},v)
      end
    }
    post_form(url, form, headers)
  end