title: How to enable <C-k> to "scroll up" in code sugguestions/hints with vscode vim instead of using arrow keys?
body: <p>VScodevim has <code>extension.vim_ctrl+j</code> by default mapped to Ctrl+j which allows you do navigate <strong>down</strong> pop-up code suggestion windows (triggered by hitting Ctrl+Space in insert mode) like this:</p>
  <p><a href="https://i.stack.imgur.com/7k0hp.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/7k0hp.png" alt="image" /></a></p>
  <p>It also has <code>extension.vim_ctrl+k</code> mapped to Ctrl+k but this binding down not work, so I cannot scroll <strong>up</strong> pop-up code suggestion windows.  in insert mode defaults to entering a <a href="http://vimdoc.sourceforge.net/htmldoc/digraph.html" rel="nofollow noreferrer">digraph</a> but simply adding something like this</p>
  <pre><code>    {
        &quot;before&quot;: [&quot;&lt;C-k&gt;&quot;],
        &quot;after&quot;: [&quot;extension.vim_ctrl+k&quot;]
      }
  </code></pre>
  <p>to my <code>settings.json</code> does not work since although it removes the digraph functionality, from what I understand, whenever I now press Ctrl+k in insert mode, VSCode will consult the <code>settings.json</code>, find the mapping of  to &quot;extension.vim_ctrl+k&quot; which points it back to <code>settings.json</code> in a sort of infinite loop.</p>
  <p><code>:h i_ctrl-j</code> in vim reveals this keybind to be mapped to &quot;Begin new line&quot; so it seems VScode interprets &quot;Begin new line&quot; as navigating <strong>down</strong> a pop-up window in insert mode instead of it's usual vim behaviour of creating a new line and moving the cursor there, although not sure this is how it works. In any case, I could not find an equivalent vim command that perhaps VSCode could use to scroll up in pop-up windows. Any help would be much appreciated!</p>