Regex Tester & Validator

This regular expression matches text enclosed within parentheses, allowing for one or more opening parentheses but requiring exactly one closing parenthesis. Inside the parentheses, it strictly captures sequences consisting of alphabetical characters (both uppercase and lowercase), commas, and underscores. With the global and multiline flags enabled, it efficiently finds all such occurrences across an entire multiline string. It is highly useful for extracting parameter lists, function-like annotations, or specific bracketed metadata from text files or code.