1 /* GNU Mailutils -- a suite of utilities for electronic mail 2 Copyright (C) 1999-2021 Free Software Foundation, Inc. 3 4 This library is free software; you can redistribute it and/or 5 modify it under the terms of the GNU Lesser General Public 6 License as published by the Free Software Foundation; either 7 version 3 of the License, or (at your option) any later version. 8 9 This library is distributed in the hope that it will be useful, 10 but WITHOUT ANY WARRANTY; without even the implied warranty of 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 Lesser General Public License for more details. 13 14 You should have received a copy of the GNU Lesser General 15 Public License along with this library. If not, see 16 <http://www.gnu.org/licenses/>. */ 17 18 #ifdef HAVE_CONFIG_H 19 # include <config.h> 20 #endif 21 #include <stdlib.h> 22 #include <mailutils/sys/list.h> 23 24 mu_list_comparator_t mu_list_set_comparator(mu_list_t list,mu_list_comparator_t comp)25mu_list_set_comparator (mu_list_t list, mu_list_comparator_t comp) 26 { 27 mu_list_comparator_t old_comp; 28 29 if (list == NULL) 30 return NULL; 31 old_comp = list->comp; 32 list->comp = comp; 33 return old_comp; 34 } 35