title: Vim and GVim: leader key not working
body: <p>I have some plugins installed, including NERDCommenter and NERDTree.  I can't get the leader key to work right for them, though.  These are the default configs when I type <code>:map</code></p>
  
  <pre><code>v  \c&lt;Space&gt;     &lt;Plug&gt;NERDCommenterToggle
  n  \c&lt;Space&gt;     &lt;Plug&gt;NERDCommenterToggle
  v  \cc           &lt;Plug&gt;NERDCommenterComment
  n  \cc           &lt;Plug&gt;NERDCommenterComment
  </code></pre>
  
  <p><code>\c&lt;space&gt;</code> just works like hitting <code>c&lt;space&gt;</code>.  I've tried remapping the leader key with the following in my <code>.vimrc</code> in my home directory:</p>
  
  <pre><code>let mapleader = ","
  </code></pre>
  
  <p>This is reflected when I restart vim and type <code>:map</code></p>
  
  <pre><code>v  ,c&lt;Space&gt;     &lt;Plug&gt;NERDCommenterToggle
  n  ,c&lt;Space&gt;     &lt;Plug&gt;NERDCommenterToggle
  v  ,cc           &lt;Plug&gt;NERDCommenterComment
  n  ,cc           &lt;Plug&gt;NERDCommenterComment
  </code></pre>
  
  <p>But still, <code>,c&lt;space&gt;</code> just behaves like I'm hitting <code>c&lt;space&gt;</code>.  What's going on and how do I fix this?</p>
  
  <p><strong>Edit</strong>: tested this in VIM as well with the same behavior.</p>