[jboss-jira] [JBoss JIRA] (JBRULES-3326) drl compilation failed when encountering multiple continuous '!' (a.k.a 'not' operator)s

drl compilation failed when encountering multiple continuous '!' (a.k.a 'not' operator)s ---------------------------------------------------------------------------------------- Key: JBRULES-3326 URL: https://issues.jboss.org/browse/JBRULES-3326 Project: Drools Issue Type: Bug Security Level: Public(Everyone can see) Components: drools-compiler (expert) Affects Versions: 5.3.0.Final Environment: jdk 1.6u27, ubuntu linux 11.04 Reporter: Miles Wen Assignee: Mark Proctor Labels: compilation, drl this code: rule "out" when Msg(!!!false) then end compile failed with message: Unable to Analyse Expression !!!false: [Error: unexpected operator '!'] [Near : {... !!!false ....}] ^ [Line: 16, Column: 12] : [Rule name='out'] but Msg(!false) compiles correctly.