<div dir="ltr"><div dir="ltr"></div><br><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
Atom's definition is invalid.<br>
Should be :<br>
<br>
ATOM = [a-z][a-zA-Z0-9_]*<br>
<br></blockquote></div><div><br></div><div>ATOM = [a-z][a-zA-Z0-9_@]*</div></div>