SYNOPSIS
       #include <string.h>

       char *strsep(char **stringp, const char *delim);

   feature test macro requirements for glibc (see feature_test_macros(7)):

       strsep(): _BSD_SOURCE

DESCRIPTION
       If  *stringp is NULL, the strsep() function returns NULL and does noth-
       ing else.  Otherwise, this function finds the first token in the string
       *stringp,  where  tokens  are delimited by symbols in the string delim.
       This token is terminated with a  '\0'  character  (by  overwriting  the
       delimiter) and *stringp is updated to point past the token.  In case no
       delimiter was found, the  token  is  taken  to  be  the  entire  string
       *stringp, and *stringp is made NULL.

RETURN VALUE
       The  strsep()  function  returns  a  pointer  to the token, that is, it
       returns the original value of *stringp.

CONFORMING TO
       4.4BSD.

NOTES
       the strsep() function was introduced as a  replacement  for  strtok(3),
       since  the  latter cannot handle empty fields.  however, strtok(3) con-
       forms to C89/C99 and hence is more portable.

BUGS
       Be cautious when using this function.  If you do use it, note that:

       * This function modifies its first argument.

       * This function cannot be used on constant strings.

       * The identity of the delimiting character is lost.

SEE ALSO
       index(3),  memchr(3),  rindex(3),  strchr(3),  strpbrk(3),   strspn(3),
       strstr(3), strtok(3)

COLOPHON
       This  page  is  part of release 3.23 of the Linux man-pages project.  A
       description of the project, and information about reporting  bugs,  can
       be found at http://www.kernel.org/doc/man-pages/.