s">val with_positions : lexbuf -&gt; bool</pre><div class="info ">
<div class="info-desc">
<p>Tell whether the lexer buffer keeps track of position fields
    <code class="code">lex_curr_p</code> / <code class="code">lex_start_p</code>, as determined by the corresponding
    optional argument for functions that create lexer buffers
    (whose default value is <code class="code">true</code>).</p>

<p>When <code class="code">with_positions</code> is <code class="code">false</code>, lexer actions should not
  