265 int replace_word(char **str, int pos, int len, const char *substr)  in replace_word()  argument
271     str_len = strlen(*str);  in replace_word()
281     strncpy(new_str, *str, pos);  in replace_word()
283     strcat(new_str, *str + pos + len);  in replace_word()
286     free(*str);  in replace_word()
287     *str = new_str;  in replace_word()
327 char   *StrDup(const char *str)  in StrDup()  argument
331     if (NULL == (cp = strdup(str ? str : "")))  in StrDup()
349 char   *StrNDup(const char *str, int len)  in StrNDup()  argument
354     if (str && len)  in StrNDup()
355         (void)strncpy(cp, str, len);  in StrNDup()