strsep man page on Archlinux

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STRSEP(3)		   Linux Programmer's Manual		     STRSEP(3)

       strsep - extract token from string

       #include <string.h>

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

   Feature Test Macro Requirements for glibc (see feature_test_macros(7)):

       strsep(): _BSD_SOURCE

       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,  that	is  delimited by one of the bytes in the string delim.
       This token is terminated by overwriting the delimiter with a null  byte
       ('\0'),	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.

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

   Multithreading (see pthreads(7))
       The strsep() function is thread-safe.


       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.

       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.

       index(3), memchr(3), rindex(3), strchr(3), string(3), strpbrk(3),  str‐
       spn(3), strstr(3), strtok(3)

       This  page  is  part of release 3.65 of the Linux man-pages project.  A
       description of the project, and information about reporting  bugs,  can
       be found at

GNU				  2014-02-25			     STRSEP(3)

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