title: in ipython how do I accept and use an autocomplete suggestion?
body: <p>I'm using Python 3.8.9 with IPython 8.0.1 on macOS. When I type anything whatsoever, it displays a predicted suggestion based on past commands. Cool.</p>
  <p>However, how do I actually accept that suggestion? I tried the obvious: tab, which does <em>not</em> accept the suggestion, but rather opens up a menu with <em>different</em> suggestions, while the original suggestion is still there (see screenshot).</p>
  <p>I also tried space, and return, but both of those act as if the suggestion was never made. How the heck do I actually <em>use</em> the ipython autosuggestion? Or is tab supposed to work and something is wrong with my ipython build or something?</p>
  <p><a href="https://i.stack.imgur.com/0x5Au.png" rel="noreferrer"><img src="https://i.stack.imgur.com/0x5Au.png" alt="enter image description here" /></a></p>