# File lib/ferret/index.rb, line 194
194:     def highlight(query, doc_id, options = {})
195:       @dir.synchronize do
196:         ensure_searcher_open()
197:         @searcher.highlight(do_process_query(query),
198:                             doc_id,
199:                             options[:field]||@options[:default_field],
200:                             options)
201:       end
202:     end