If returns a transformer that applies tIn to consecutive runes for which s.Contains(r) and tNotIn to consecutive runes for which !s.Contains(r).

In creates a Set with a Contains method that returns true for all runes in the given RangeTable.

Map returns a Transformer that maps the runes in the input using the given mapping.

In creates a Set with a Contains method that returns true for all runes not in the given RangeTable.

Predicate creates a Set with a Contains method that returns f(r).

Remove returns a Transformer that removes runes r for which s.Contains(r).

ReplaceIllFormed returns a transformer that replaces all input bytes that are not part of a well-formed UTF-8 code sequence with utf8.RuneError.

Transformer implements the transform.Transformer interface.

A Set is a collection of runes.