+ notmuch_indexopts_t *
+ notmuch_database_get_default_indexopts (notmuch_database_t *db);
+ notmuch_status_t
+ notmuch_indexopts_set_decrypt_policy (notmuch_indexopts_t *indexopts,
+ notmuch_decryption_policy_t decrypt_policy);
+ notmuch_decryption_policy_t
+ notmuch_indexopts_get_decrypt_policy (const notmuch_indexopts_t *indexopts);
+ void
+ notmuch_indexopts_destroy (notmuch_indexopts_t *options);
+
+ notmuch_status_t
+ notmuch_database_set_config (notmuch_database_t *db, const char *key, const char *value);
+ notmuch_status_t
+ notmuch_database_get_config (notmuch_database_t *db, const char *key, char **value);
+ notmuch_config_pairs_t *
+ notmuch_config_get_pairs (notmuch_database_t *db, const char *prefix);
+ notmuch_bool_t
+ notmuch_config_pairs_valid (notmuch_config_pairs_t *config_list);
+ const char *
+ notmuch_config_pairs_key (notmuch_config_pairs_t *config_list);
+ const char *
+ notmuch_config_pairs_value (notmuch_config_pairs_t *config_list);
+ void
+ notmuch_config_pairs_move_to_next (notmuch_config_pairs_t *config_list);
+ void
+ notmuch_config_pairs_destroy (notmuch_config_pairs_t *config_list);