title: How to resize split windows in Vim proportionally?
body: <p>Ok so first off, this is <strong>NOT</strong> the answer I'm looking for: </p>
  
  <pre><code>autocmd VimResized * :wincmd =
  </code></pre>
  
  <p>Let me explain: Let's assume I have 2 vertically split windows, one at 30% size and one at 70% size. When I resize my window, I want that percentage to stay the same. Without this command, the split on the right slowly collapses so that you eventually can't see anything in the window. With the command above, once you start resizing the window, the window sizes immediately change to 50%/50%. </p>
  
  <p>I work with a lot of splits (vertical and horizontal) and I don't want the command above to just make everything equal, but at the same time I do want them to resize, just PROPORTIONALLY to the window... I want the percentage height/width of all splits in the window to stay the same when the window is resized. Ideas?</p>