AlteryxTrifacta Classic ExperienceWrangle LanguageOther Language TopicsOther Language TopicsText MatchingEscaping Strings in TransformationsPattern Clause Position MatchingString Collation RulesSupported Special Regular Expression CharactersCapture Group ReferencesValid Data Type StringsData Type Validation PatternsStructure of a URLLanguage Documentation Syntax NotesSource Metadata ReferencesColumn Reference Syntax