Luca Molteni created DROOLS-6035: ------------------------------------ Summary: Some combination of characters in the rule name breaks the ANTLR grammar Key: DROOLS-6035 URL: https://issues.redhat.com/browse/DROOLS-6035 Project: Drools Issue Type: Bug Reporter: Luca Molteni Assignee: Luca Molteni See https://stackoverflow.com/questions/66212287/what-characters-are-allowed-... I think I have discovered, anecdotally, that some "grouping" characters do not work in rule names (seems rules named with can't be found or aren't included) - or at least, in extension rules (the extended rule seems to work with grouping chars, but not its extension; example below): The grouping chars include parentheses "()", square brackets "[]", and "curly braces" "{}". Although less than & greater than "<>" work, so I'm so far replacing the former with the latter. Or are there escape chars for the problematic grouping chars? Example: rule "(grouping chars, and commas, work here)" when // conditions LHS then end // removing parentheses, or replacing with < >, // from below line works rule "(grouping chars DON'T work here)" extends "(grouping chars, and commas, work here)" when then // consequences RHS -- This message was sent by Atlassian Jira (v8.13.1#813001)