*** ./command.c.orig	2009-10-13 23:04:01.000000000 +0200
--- ./command.c	2009-11-15 21:53:25.418639611 +0100
***************
*** 1127,1132 ****
--- 1127,1152 ----
  			free(pattern);
  	}
  
+ 	/* \pexec -- pass parameters separately */
+ 	else if (strcmp(cmd, "pexec") == 0)
+ 	{
+ 		char	   *opt = psql_scan_slash_option(scan_state,
+ 												 OT_NORMAL, NULL, false);
+ 
+ 		if (opt)
+ 			pset.use_parameters = ParseVariableBool(opt);
+ 		else
+ 			pset.use_parameters = !pset.use_parameters;
+ 		if (!pset.quiet)
+ 		{
+ 			if (pset.use_parameters)
+ 				puts(_("Separately passing parameters is on."));
+ 			else
+ 				puts(_("Separately passing parameters is off."));
+ 		}
+ 		free(opt);
+ 	}
+ 
  	/* \! -- shell escape */
  	else if (strcmp(cmd, "!") == 0)
  	{
*** ./common.c.orig	2009-04-11 20:38:54.000000000 +0200
--- ./common.c	2009-11-15 22:28:25.036648416 +0100
***************
*** 852,858 ****
  		if (pset.timing)
  			INSTR_TIME_SET_CURRENT(before);
  
! 		results = PQexec(pset.db, query);
  
  		/* these operations are included in the timing result: */
  		ResetCancelConn();
--- 852,876 ----
  		if (pset.timing)
  			INSTR_TIME_SET_CURRENT(before);
  
! 		if (!pset.use_parameters)
! 			results = PQexec(pset.db, query);
! 		else
! 		{
! 			/* use PQexecParams function instead */
! 			results = PQexecParams(pset.db, query, 
! 							    pset.nparameters, 
! 							    NULL, 
! 							    pset.parameters, 
! 							    NULL, 
! 							    NULL, 
! 							    0);
! 			if (pset.nparameters)
! 			{
! 				pset.nparameters = 0;
! 				pset.maxparameters = 0;
! 				free(pset.parameters);
! 			} 
! 		}
  
  		/* these operations are included in the timing result: */
  		ResetCancelConn();
*** ./psqlscan.l.orig	2009-11-15 21:28:55.000000000 +0100
--- ./psqlscan.l	2009-11-15 22:06:04.814641928 +0100
***************
*** 693,701 ****
  
  					if (value)
  					{
! 						/* It is a variable, perform substitution */
! 						push_new_buffer(value);
! 						/* yy_scan_string already made buffer active */
  					}
  					else
  					{
--- 693,716 ----
  
  					if (value)
  					{
! 						if (pset.use_parameters)
! 						{
! 							char	buffer[10];
! 						
! 							/* add new parameter */
! 							if (pset.nparameters == pset.maxparameters)
! 							{
! 								pset.maxparameters += 100;
! 								pset.parameters = malloc(sizeof(char *) * pset.maxparameters);
! 							}
! 							pset.parameters[pset.nparameters++] = value;
! 							sprintf(buffer, "$%d", pset.nparameters);
! 							push_new_buffer(buffer);
! 						}
! 						else
! 							/* It is a variable, perform substitution */
! 							push_new_buffer(value);
! 							/* yy_scan_string already made buffer active */
  					}
  					else
  					{
*** ./settings.h.orig	2009-02-26 17:02:38.000000000 +0100
--- ./settings.h	2009-11-15 21:54:23.321640498 +0100
***************
*** 111,116 ****
--- 111,120 ----
  	const char *prompt2;
  	const char *prompt3;
  	PGVerbosity verbosity;		/* current error verbosity level */
+ 	bool	use_parameters;
+ 	int 	   nparameters;
+ 	int        maxparameters;
+ 	const char **parameters;
  } PsqlSettings;
  
  extern PsqlSettings pset;
*** ./startup.c.orig	2009-04-05 06:19:58.000000000 +0200
--- ./startup.c	2009-11-15 22:45:02.654643678 +0100
***************
*** 122,127 ****
--- 122,131 ----
  	pset.queryFoutPipe = false;
  	pset.cur_cmd_source = stdin;
  	pset.cur_cmd_interactive = false;
+ 	pset.use_parameters = false;
+ 	pset.parameters = NULL;
+ 	pset.maxparameters = 0;
+ 	pset.nparameters = 0;
  
  	/* We rely on unmentioned fields of pset.popt to start out 0/false/NULL */
  	pset.popt.topt.format = PRINT_ALIGNED;
***************
*** 322,327 ****
--- 326,332 ----
  		{"port", required_argument, NULL, 'p'},
  		{"pset", required_argument, NULL, 'P'},
  		{"quiet", no_argument, NULL, 'q'},
+ 		{"pexec", no_argument, NULL, 'r'},
  		{"record-separator", required_argument, NULL, 'R'},
  		{"single-step", no_argument, NULL, 's'},
  		{"single-line", no_argument, NULL, 'S'},
***************
*** 346,352 ****
  
  	memset(options, 0, sizeof *options);
  
! 	while ((c = getopt_long(argc, argv, "aAc:d:eEf:F:h:HlL:no:p:P:qR:sStT:U:v:VwWxX?1",
  							long_options, &optindex)) != -1)
  	{
  		switch (c)
--- 351,357 ----
  
  	memset(options, 0, sizeof *options);
  
! 	while ((c = getopt_long(argc, argv, "aAc:d:eEf:F:h:HlL:no:p:P:qrR:sStT:U:v:VwWxX?1",
  							long_options, &optindex)) != -1)
  	{
  		switch (c)
***************
*** 432,437 ****
--- 437,445 ----
  			case 'q':
  				SetVariableBool(pset.vars, "QUIET");
  				break;
+ 			case 'r':
+ 				pset.use_parameters = true;
+ 				break;
  			case 'R':
  				pset.popt.topt.recordSep = pg_strdup(optarg);
  				break;