Creates an ICU regular expression object.
Appends a replacement during iterative replacement.
Appends the remaining input after replacements.
Finds the next match.
Returns the find pattern.
Returns capture group count.
Tests whether the pattern matches.
Tests whether input starts with the pattern.
Returns match position.
Returns the last matched string or capture.
Replaces all matches.
Replaces the first match.
Returns the replacement pattern.
Resets input or pattern state.
Splits input around matches.