Regular expression matching on text.
System.regex.match_result: Regular expression result object.make System.regex(regex, ): Construct new regular expression object.make System.regex(regex, c_insensitive, ): Construct new regular expression object.case_insensitive: Is match case-insensitive?internal_regex_obj: match(str, ): Match regular expression on text.match(str, start, ): Match regular expression on text.replace(str, replace_with, ): Replaces string matched by regular expression with another.replace(str, replace_with, max, ): Replaces string matched by regular expression with another.split(str, ): Splits a string based on regular expression.split(str, max, ): Splits a string based on regular expression.