title: Unexpected red brackets highlight in vim
body: <p>In my C++ code vim shows red highlighted brackets in the following piece:</p>
  
  <p><img src="https://i.stack.imgur.com/gqJd0.png" alt="vim screenshot"></p>
  
  <p>This is some in-built functionality as I tried removing .vimrc, but it still shows them red. What's going on and how to fix it?</p>