Hi again, I just found the PBE2 - chapter on Regex. First of all: That is an excellent chapter, thanks a lot guys for writing and providing it!!! It doesn't mention {} quantifiers, so I guess it is simply a feature too new in Regexes for it to be supported by Vassily's Regex code. So I started a new tiny experiment: '123{' matchesRegex: '\123{' --> true which means the regex matcher treats { as a normal character. I guess this is okay with Regex 1.1, a version that didn't know {} quantifiers, right? Is anybody aware of a Regex matcher in Smalltalk that supports a newer Regex version? I am asking because in an application I need to process an impressive set of business rules provided by a third party that is expressed with lots of regexes. It would be nice if I could simply use these expressions uniformly for both HTML5 input fields and my Server application in Seaside... Joachim -- View this message in context: http://forum.world.st/Regex-with-Quantifiers-tp4680523p4681637.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.