# File lib/active_support/core_ext/string/filters.rb, line 38 def truncate(length, options = {}) text = self.dup options[:omission] ||= "..." length_with_room_for_omission = length - options[:omission].mb_chars.length chars = text.mb_chars stop = options[:separator] ? (chars.rindex(options[:separator].mb_chars, length_with_room_for_omission) || length_with_room_for_omission) : length_with_room_for_omission (chars.length > length ? chars[0...stop] + options[:omission] : text).to_s end