id summary reporter owner description type status milestone component version severity resolution keywords cc 4270 Hexadecimal range problem. renhawking@… John Maddock "Sorry for my english. There is a problem with hexadecimal ranges, in perl it is posible to do this: \x5A[\x00-\xCC]{12}\x5A to match almost all hexadecimal numbers, but it's not possible to do it with booost regex. I get this runtime error when I try to run it: Character set declaration starting with [ terminated prematurely - either no ] was found or the set had no content. The error occured while parsing the regular expression: 'Z[>>>HERE>>>'. Thank you" Bugs closed Boost 1.44.0 regex Boost 1.42.0 Problem worksforme