title: Most light-weight way to retrieve content of a webpage in R?
body: <p>I'm aware of rvest's <code>xml2::read_html()</code>, which can be provided with a URL to retrieve the contents of the webpage.</p>
  <p>What is the lightest-weight way to retrieve the contents of a webpage (i.e. preferably without any packages; i.e. using just base R)?</p>