I tried <a href="http://www.strfriend.com/vis?re=%28%3F%3A%5B%2B-%5D%3F%29%28%3F%3D%5Cd%7C%5C.%5Cd%29%5Cd*%28%3F%3A%5C.%5Cd*%29%3F%28%3F%3A%5BEe%5D%28%3F%3A%5B%2B-%5D%3F%5Cd%2B%29%29%3F">this one</a>, and got a "not yet implemented" element, for the positive lookahead:<br>
<br> (?:[+-]?)(?=\d|\.\d)\d*(?:\.\d*)?(?:[Ee](?:[+-]?\d+))?<br><br><br><br><div class="gmail_quote">On Wed, Dec 3, 2008 at 8:40 AM, Tom Legrady <span dir="ltr"><<a href="mailto:legrady@gmail.com">legrady@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">If you like regular expressions, you'll love <a href="http://www.strfriend.com" target="_blank">http://www.strfriend.com</a><br>
<br>
<br>
Tom<br>
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</blockquote></div><br><br clear="all"><br>-- <br>-QM<br>Quantum Mechanics: The dreams stuff is made of<br>