Use our own snprintf() only if NLS is enabled, and support %qd and %I64d.

configure

@@ -14527,7 +14527,8 @@ fi
 
 
 # Force use of our snprintf if system's doesn't do arg control
-if test $pgac_need_repl_snprintf = no; then
+# This feature is used by NLS
+if test "$enable_nls" = yes -a $pgac_need_repl_snprintf = no; then
   echo "$as_me:$LINENO: checking whether printf supports argument control" >&5
 echo $ECHO_N "checking whether printf supports argument control... $ECHO_C" >&6
 if test "${pgac_cv_printf_arg_control+set}" = set; then

configure.in

 dnl Process this file with autoconf to produce a configure script.
-dnl $PostgreSQL: pgsql/configure.in,v 1.403 2005/02/28 20:55:18 tgl Exp $
+dnl $PostgreSQL: pgsql/configure.in,v 1.404 2005/03/02 14:48:22 momjian Exp $
 dnl
 dnl Developers, please strive to achieve this order:
 dnl
@@ -1067,7 +1067,8 @@ AC_MSG_ERROR([[
 
 
 # Force use of our snprintf if system's doesn't do arg control
-if test $pgac_need_repl_snprintf = no; then
+# This feature is used by NLS
+if test "$enable_nls" = yes -a $pgac_need_repl_snprintf = no; then
   PGAC_FUNC_PRINTF_ARG_CONTROL
   if test $pgac_cv_printf_arg_control != yes ; then
     pgac_need_repl_snprintf=yes

src/port/snprintf.c

@@ -65,7 +65,7 @@
  * causing nasty effects.
  **************************************************************/
 
-/*static char _id[] = "$PostgreSQL: pgsql/src/port/snprintf.c,v 1.12 2005/03/02 05:22:22 momjian Exp $";*/
+/*static char _id[] = "$PostgreSQL: pgsql/src/port/snprintf.c,v 1.13 2005/03/02 14:48:22 momjian Exp $";*/
 
 int			snprintf(char *str, size_t count, const char *fmt,...);
 int			vsnprintf(char *str, size_t count, const char *fmt, va_list args);
@@ -259,6 +259,23 @@ dopr(char *buffer, const char *format, va_list args, char *end)
 						else
 							longflag = 1;
 						goto nextch;
+					/*
+					 *	We might export this to client apps so we should
+					 *	support 'qd' and 'I64d'(MinGW) also in case the
+					 *	native version does.
+					 */
+					case 'q':
+						longlongflag = 1;
+						longflag = 1;
+						goto nextch;
+					case 'I':
+						if (*(format+1) == '6' && *(format+2) == '4')
+						{
+							format += 2;
+							longlongflag = 1;
+							longflag = 1;
+							goto nextch;
+						}					
 					case 'u':
 					case 'U':
 						/* fmtnum(value,base,dosign,ljust,len,zpad,&output) */