title: Command-click doesn't open a new tab, but middle-click does
body: <p>On my website, which is a one-page JS site using Sammy.js and jQuery, when I middle-click a link with a mouse, the link opens in a new tab. But when I command-click on a Mac, it doesn't. This happens in both Firefox and Chrome, so I assume it must be according to spec in some way.</p>
  
  <p>This happens on a Macbook Air (so trackpad + command button). Most sites work just fine though, with command-click being identical to normal middle-click.</p>
  
  <p>Try it out yourself: <a href="https://circleci.com" rel="noreferrer">https://circleci.com</a>. Command-click between "about", "home" and "contact" and you should experience the problem - they don't open in new tabs.</p>