There is no regexp for this. Easiest thing to do is make a package with a single rule in it and pass it into a packagebuilder session. Mark hypnosat7 wrote:

Hi, yes, close to that: name returns [String name] : ID { $name = $ID.text; } | STRING { $name = getString( $STRING.text ); } ; So, a rule name can be either an ID or a STRING. ID is what you got already: ID : ('a'..'z'|'A'..'Z'|'_'|'$'|'\u00c0'..'\u00ff')('a'..'z'|'A'..'Z'|'_'|'0'..'9'|'\u00c0'..'\u00ff')* ; A String is a valid Java string... so pretty much anything enclosed in either " or '. STRING : ('"' ( EscapeSequence | ~('\\'|'"') )* '"') | ('\'' ( EscapeSequence | ~('\\'|'\'') )* '\'') ; In other words, if you want to allow the user to write rule names and don't want to bother in validating it, just enclose the rule name in " and be done with it. The only thing that may be good is to limit the length of the string... you may want to use a hard limit around 60 characters I guess. []s Edson []s Edson 2007/8/2, hypnosat7 <ablarbi(a)yahoo.fr&gt;: -- Edson Tirelli Software Engineer - JBoss Rules Core Developer Office: +55 11 3529-6000 Mobile: +55 11 9287-5646 JBoss, a division of Red Hat @ www.jboss.com