diff --git a/src/port/getopt_long.c b/src/port/getopt_long.c
new file mode 100644
index d624216..5076bbe
*** a/src/port/getopt_long.c
--- b/src/port/getopt_long.c
*************** getopt_long(int argc, char *const argv[]
*** 60,67 ****
  {

  	static char *place = EMSG;	/* option letter processing */

  	char	   *oli;			/* option letter list index */

! 

! 	if (!*place)

  	{							/* update scanning pointer */

  		if (optind >= argc)

  		{

--- 60,71 ----
  {

  	static char *place = EMSG;	/* option letter processing */

  	char	   *oli;			/* option letter list index */

! 	if (place[0] == '-')		/*Check if current argument is another option to be processed instead of path of file for -f */

! 	{

! 		place++;

! 		optopt = (int) *place++;

! 	}

! 	if (!*place && (optopt != 'f'))//introduced extra check so that if next argument received is 2nd file for -f it doesn't exit.

  	{							/* update scanning pointer */

  		if (optind >= argc)

  		{

*************** getopt_long(int argc, char *const argv[]
*** 157,162 ****
--- 161,168 ----
  		}

  	}

  

+ if ((optopt != 'f'))

+ {

  	/* short option */

  	optopt = (int) *place++;

  

*************** getopt_long(int argc, char *const argv[]
*** 198,202 ****
--- 204,217 ----
  		place = EMSG;

  		++optind;

  	}

+ }

+ else//to update the list of files to be read

+ {

+ 		optarg = argv[optind];

+ 		place = EMSG;

+ 		++optind;

+ 		place = argv[optind];

+ 

+ }

  	return optopt;

  }