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strsep
======

Syntax
------

     #include <string.h>
     
     char *strsep(char **stringp, char *delim);

Description
-----------

This function retrieves the next token from the given string, where
STRINGP points to a variable holding, initially, the start of the
string.  Tokens are delimited by a character from DELIM.  Each time the
function is called, it returns a pointer to the next token, and sets
*STRINGP to the next spot to check, or `NULL'.

Return Value
------------

The next token, or NULL.

Example
-------

     main()
     {
       char *buf = "Hello  there,stranger";
       char **bp = &buf;
       char *tok;
       while (tok = strsep(bp, " ,"))
         printf("tok = `%s'\n", tok);
     }
     
     tok = `Hello'
     tok = `'
     tok = `there'
     tok = `stranger'