title: How to autocomplete in ggplot2 qplot() and geom_()?
body: <p><code>qplot()</code> and <code>geom_()</code> parameters don't include some parameters like color or shape ..etc</p>
  
  <pre><code>help(qplot)
  help(geom_point)
  </code></pre>
  
  <p>However one can write the following code</p>
  
  <pre><code>qplot(x= price , data  = diamonds , color = cut)
  </code></pre>
  
  <p>I know all of these parameters are <code>aes()</code> parameters, But aes() also don't mention these parameters explicitly. </p>
  
  <p>So how can one know if the parameter he is typing is correct if there is no auto-completion?</p>
  
  <h2>Update:</h2>
  
  <p>Now I know that every geom_() function has it's own specified aesthetics in the documentation, but my question now is that why there is no autocomplete instead of opening the documentation. Is there is a way around that?</p>