Issue #20095 has been updated by duerst (Martin Dürst). Status changed from Open to Closed If the duplicate has already be resolved, then let's close this, too. ---------------------------------------- Bug #20095: Regex lookahead behaving strangely in 3.3.0 https://bugs.ruby-lang.org/issues/20095#change-106509 * Author: sisyphus_cg (Sisyphus CG) * Status: Closed * Priority: Normal * ruby -v: 3.3.0 * Backport: 3.0: DONTNEED, 3.1: DONTNEED, 3.2: DONTNEED, 3.3: REQUIRED ---------------------------------------- Multiple regex lookaheads seem to behave strangely in 3.3.0: ```ruby p "xxx" =~ /(?=.*x)x(?=banana)/ # 2 ``` Clearly, the string `xxx` does not contain `banana`, so this regex should never match, but it does. -- https://bugs.ruby-lang.org/