Turn off vim syntax highlighting inside C++ comments : <p>I recently downloaded vim 8.0. I don't know if I messed something up or a default changed, but in this code...</p>

<pre><code>int foo()
{
    // This is a comment containing a "string" and the number 5.
    return 42;
}
</code></pre>

<p>...the <code>"string"</code> and <code>5</code> are in a different color. It's the same color as when they appear in normal code.  I've never seen that before.  How can I turn it off?</p>
