class Regexp::Syntax::Base
def normalize_backref(type, token)
def normalize_backref(type, token) case token when :name_ref_ab, :name_ref_sq %i[backref name_ref] when :name_call_ab, :name_call_sq %i[backref name_call] when :name_recursion_ref_ab, :name_recursion_ref_sq %i[backref name_recursion_ref] when :number_ref_ab, :number_ref_sq %i[backref number_ref] when :number_call_ab, :number_call_sq %i[backref number_call] when :number_rel_ref_ab, :number_rel_ref_sq %i[backref number_rel_ref] when :number_rel_call_ab, :number_rel_call_sq %i[backref number_rel_call] when :number_recursion_ref_ab, :number_recursion_ref_sq %i[backref number_recursion_ref] else [type, token] end end