Performance of filter expression for matching all files : * vs. *.*
<p>Let's say I need to provide a filter to match all files in a given filesystem, not necessarily in linux, but also for matching all files in an IDE with huge code base that supports regex based filtering. Is there any significant performance difference between using </p>

<blockquote>
  <p>*</p>
</blockquote>

<p>vs.</p>

<blockquote>
  <p><strong>*. *</strong></p>
</blockquote>

<p>Note: Please ignore the extra space in above expression, posting it without space makes it a dot for some reason.</p>

<p>Assuming all files have extensions, these expressions are one and the same. However, I would like to know if any one of it outperform the other especially when there are huge number of files to match. </p>