Regex Editor & Tester

Matches structured log entries with optional event reason codes in parentheses (such as RRR001, RIR123, PCR456, PRR789, PAR000), followed by a timestamp in YYYYMMDD@HHMMSS format within square brackets, and optionally trailing content wrapped in double angle brackets. Useful for parsing event logs where reason codes include validation markers like RR (reject reason) or PC (process code).