title: Exact selected multiline string search in vim
body: <p>I have a buffer. In that buffer exists a string that spans multiple lines:</p>
  
  <pre><code>asdf
  qrughatuxlnjtzu
  ... tens more lines...
  </code></pre>
  
  <p>I have one instance of this string readily available under my cursor. I want to search for <em>other</em> instances of this multiline string in the same buffer without having to manually copy/edit significant portions of said multiline string into the command buffer (n.b. manually replacing newlines with their regex equivalents is significant editing).</p>
  
  <p>I've tried using <a href="https://stackoverflow.com/questions/8587136/how-do-i-search-for-the-selected-text">How do I search for the selected text?</a> (visual selection -> yank -> command buffer) + <a href="https://stackoverflow.com/questions/1550734/exact-string-match-in-vim-like-regex-off-mode-in-less">Exact string match in vim? (Like &#39;regex-off&#39; mode in less.)</a> (verbatim search), but the approaches do not appear to work for multiple lines.</p>
  
  <p>How do I perform an exact multiline search of a selected string in Vim?</p>