# File lib/scrubyt/core/scraping/filters/tree_filter.rb, line 35
    def generate_regexp_for_example
      return if @example_type != EXAMPLE_TYPE_STRING
      return if @temp_sink.nil?
      return if @temp_sink.is_a? String
      return if @example =~ /.+\[.+\]$/

      text = SharedUtils.prepare_text_for_comparison(@temp_sink.inner_html.gsub(/<.*?>/, ''))
      match_range = @temp_sink.match_data.begin(0)..@temp_sink.match_data.end(0)
      return if match_range == (0..text.length)

      @regexp = text
      @temp_sink.changing_ranges.sort.reverse.each do |range|
        @regexp[range] = if range == match_range then '<<<regexp_selection>>>' else '<<<regexp_changing>>>' end
      end
      @regexp = Regexp.escape(@regexp)
      @regexp = @regexp.gsub('<<<regexp_changing>>>', '.*?')
      @regexp = @regexp.gsub('<<<regexp_selection>>>', '(.*?)')
      @regexp = '^' + @regexp + '$'
      @regexp = /#{@regexp}/
    end