title: Expand aliases in tcsh
body: <p>It looks like in bash it is <code>alias-expand-line</code>.</p>
  
  <p>What is the bindkey command I can add to my .cshrc_custom file?</p>
  
  <p>Sort of related: what is <code>"^[y"</code> referring to for a key bind? I know <code>^</code> is <code>ctrl</code>, but what is <code>[</code>?</p>