title: vim conceal with more than one character
body: <p>Actually I'd like to display <code>-&gt;</code> with <code>→</code> (there is a space after the arrow) in haskell files. But I have the impression the conceal mechanism only work to replace <code>-&gt;</code> by one character. An undesirable effect is visually bad indentation.</p>
  
  <p>Is there a way to achieve this?</p>
  
  <p>Thanks.</p>
  
  <p>Edit: Actually I use this, (from <code>haskell.vim</code> (conceal enhancement) plugin)</p>
  
  <pre><code>syntax match hsNiceOperator "&lt;-" conceal cchar=←
  </code></pre>