Re: Index files are not used in the session where they were created

> I am not sure if it's possible to do this, but I think it would be worth
> investigating.

Is it wrong to do something like the following in the 'if
(symbol_matcher == nullptr)'
branch in cooked_index_functions::expand_symtabs_matching?

  enum language cu_lang = entry->per_cu->lang(false);
  if (cu_lang != language_unknown && lookup_name->match_type() ==
symbol_name_match_type::FULL)
    {
      const language_defn *lang_def = language_def (cu_lang);
      symbol_name_matcher_ftype *name_matcher =
lang_def->get_symbol_name_matcher (lookup_name_without_params);
      auto_obstack temp_storage;
      if (!name_matcher(entry->full_name(&temp_storage),
lookup_name_without_params, nullptr))
        continue;
    }

Dmitry