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  26 <a name="boost.xpressive.nil"></a><div class="titlepage"></div>
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  28 <h2><span class="refentrytitle">Global nil</span></h2>
  29 <p>boost::xpressive::nil &#8212; Successfully matches nothing. </p>
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  31 <h2 xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv-title">Synopsis</h2>
  32 <div xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv"><pre class="synopsis"><span class="comment">// In header: &lt;<a class="link" href="../../xpressive/reference.html#header.boost.xpressive.regex_primitives_hpp" title="Header &lt;boost/xpressive/regex_primitives.hpp&gt;">boost/xpressive/regex_primitives.hpp</a>&gt;
  33
  34 </span><span class="emphasis"><em><span class="identifier">unspecified</span></em></span> nil<span class="special">;</span></pre></div>
  35 <div class="refsect1">
  36 <a name="idp537211968"></a><h2>Description</h2>
  37 <p>Successfully matches a zero-width sequence. nil always succeeds and never consumes any characters. </p>
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  42 <td align="right"><div class="copyright-footer">Copyright &#169; 2007 Eric Niebler<p>
  43         Distributed under the Boost Software License, Version 1.0. (See accompanying
  44         file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
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