/* -*-comment-start: "//";comment-end:""-*-
 * GNU Mes --- Maxwell Equations of Software
 * Copyright © 2018 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
 *
 * This file is part of GNU Mes.
 *
 * GNU Mes is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or (at
 * your option) any later version.
 *
 * GNU Mes is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with GNU Mes.  If not, see <http://www.gnu.org/licenses/>.
 */

#include <string.h>

#define strspn xstrspn

size_t
strspn (char const *string, char const *skipset)
{
  char *p = string;
  while (*p)
    if (!strchr (skipset, *p))
      break;
    else
      p++;
  return p - string;
}

int
main ()
{
  if (strspn ("hello, world", "abcdefghijklmnopqrstuvwxyz") != 5)
    return 1;

  if (strcspn ("hello, world", " \t\n,.;!?") != 5)
    return 2;

  return 0;
}
