diff --git a/src/bin/psql/tab-complete.c b/src/bin/psql/tab-complete.c
index 4bec69e615..718c1732f0 100644
--- a/src/bin/psql/tab-complete.c
+++ b/src/bin/psql/tab-complete.c
@@ -3,7 +3,7 @@
  *
  * Copyright 2000 by PostgreSQL Global Development Team
  *
- * $Header: /cvsroot/pgsql/src/bin/psql/tab-complete.c,v 1.7 2000/01/18 23:30:24 petere Exp $
+ * $Header: /cvsroot/pgsql/src/bin/psql/tab-complete.c,v 1.8 2000/01/21 23:32:36 tgl Exp $
  */
 
 /*-----------
@@ -532,7 +532,9 @@ char ** psql_completion(char *text, int start, int end)
        attempts filename completion, and that's usually no good. */
     if (matches == NULL) {
         COMPLETE_WITH_CONST("");
+#ifdef HAVE_RL_COMPLETION_APPEND_CHARACTER
         rl_completion_append_character = '\0';
+#endif
     }
 	
 
diff --git a/src/configure b/src/configure
index 8e3865a55e..7ec59cb22d 100755
--- a/src/configure
+++ b/src/configure
@@ -6129,16 +6129,49 @@ fi
 fi
 
 
+cat > conftest.$ac_ext <<EOF
+#line 6134 "configure"
+#include "confdefs.h"
+#include <readline.h>
+EOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  egrep "rl_completion_append_character" >/dev/null 2>&1; then
+  rm -rf conftest*
+  cat >> confdefs.h <<\EOF
+#define HAVE_RL_COMPLETION_APPEND_CHARACTER 1
+EOF
+
+else
+  rm -rf conftest*
+  cat > conftest.$ac_ext <<EOF
+#line 6148 "configure"
+#include "confdefs.h"
+#include <readline/readline.h>
+EOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  egrep "rl_completion_append_character" >/dev/null 2>&1; then
+  rm -rf conftest*
+  cat >> confdefs.h <<\EOF
+#define HAVE_RL_COMPLETION_APPEND_CHARACTER 1
+EOF
+
+fi
+rm -f conftest*
+
+fi
+rm -f conftest*
+
+
 
 for ac_func in getopt_long
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:6137: checking for $ac_func" >&5
+echo "configure:6170: checking for $ac_func" >&5
 if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 6142 "configure"
+#line 6175 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -6161,7 +6194,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:6165: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:6198: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
@@ -6186,18 +6219,17 @@ fi
 done
 
 
-
 echo $ac_n "checking for finite() macro or function""... $ac_c" 1>&6
-echo "configure:6192: checking for finite() macro or function" >&5
+echo "configure:6224: checking for finite() macro or function" >&5
 cat > conftest.$ac_ext <<EOF
-#line 6194 "configure"
+#line 6226 "configure"
 #include "confdefs.h"
 #include <math.h>
 int main() {
 int dummy=finite(1.0);
 ; return 0; }
 EOF
-if { (eval echo configure:6201: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:6233: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   cat >> confdefs.h <<\EOF
 #define HAVE_FINITE 1
@@ -6214,12 +6246,12 @@ rm -f conftest*
 
 HAVE_LONG_INT_64=0
 echo $ac_n "checking whether 'long int' is 64 bits""... $ac_c" 1>&6
-echo "configure:6218: checking whether 'long int' is 64 bits" >&5
+echo "configure:6250: checking whether 'long int' is 64 bits" >&5
 if test "$cross_compiling" = yes; then
   echo "$ac_t""assuming not on target machine" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 6223 "configure"
+#line 6255 "configure"
 #include "confdefs.h"
 typedef long int int64;
 
@@ -6247,7 +6279,7 @@ main() {
   exit(! does_int64_work());
 }
 EOF
-if { (eval echo configure:6251: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:6283: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   HAVE_LONG_INT_64=1
 	 cat >> confdefs.h <<\EOF
@@ -6268,12 +6300,12 @@ fi
 HAVE_LONG_LONG_INT_64=0
 if [ $HAVE_LONG_INT_64 -eq 0 ] ; then
 echo $ac_n "checking whether 'long long int' is 64 bits""... $ac_c" 1>&6
-echo "configure:6272: checking whether 'long long int' is 64 bits" >&5
+echo "configure:6304: checking whether 'long long int' is 64 bits" >&5
 if test "$cross_compiling" = yes; then
   echo "$ac_t""assuming not on target machine" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 6277 "configure"
+#line 6309 "configure"
 #include "confdefs.h"
 typedef long long int int64;
 
@@ -6301,7 +6333,7 @@ main() {
   exit(! does_int64_work());
 }
 EOF
-if { (eval echo configure:6305: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:6337: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   HAVE_LONG_LONG_INT_64=1
 	 cat >> confdefs.h <<\EOF
@@ -6324,7 +6356,7 @@ fi
 if [ $HAVE_LONG_LONG_INT_64 -eq 1 ] ; then
   if [ x$SNPRINTF = x ] ; then
     echo $ac_n "checking whether snprintf handles 'long long int' as %lld""... $ac_c" 1>&6
-echo "configure:6328: checking whether snprintf handles 'long long int' as %lld" >&5
+echo "configure:6360: checking whether snprintf handles 'long long int' as %lld" >&5
     if test "$cross_compiling" = yes; then
    echo "$ac_t""assuming not on target machine" 1>&6
 	# Force usage of our own snprintf, since we cannot test foreign snprintf
@@ -6333,7 +6365,7 @@ echo "configure:6328: checking whether snprintf handles 'long long int' as %lld"
   
 else
   cat > conftest.$ac_ext <<EOF
-#line 6337 "configure"
+#line 6369 "configure"
 #include "confdefs.h"
 #include <stdio.h>
 typedef long long int int64;
@@ -6360,7 +6392,7 @@ main() {
   exit(! does_int64_snprintf_work());
 }
 EOF
-if { (eval echo configure:6364: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:6396: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
    echo "$ac_t""yes" 1>&6
 	  INT64_FORMAT='"%lld"'
@@ -6371,7 +6403,7 @@ else
   rm -fr conftest*
    echo "$ac_t""no" 1>&6
     echo $ac_n "checking whether snprintf handles 'long long int' as %qd""... $ac_c" 1>&6
-echo "configure:6375: checking whether snprintf handles 'long long int' as %qd" >&5 
+echo "configure:6407: checking whether snprintf handles 'long long int' as %qd" >&5 
     if test "$cross_compiling" = yes; then
    echo "$ac_t""assuming not on target machine" 1>&6
 	# Force usage of our own snprintf, since we cannot test foreign snprintf
@@ -6380,7 +6412,7 @@ echo "configure:6375: checking whether snprintf handles 'long long int' as %qd"
   
 else
   cat > conftest.$ac_ext <<EOF
-#line 6384 "configure"
+#line 6416 "configure"
 #include "confdefs.h"
 #include <stdio.h>
 typedef long long int int64;
@@ -6407,7 +6439,7 @@ main() {
   exit(! does_int64_snprintf_work());
 }
 EOF
-if { (eval echo configure:6411: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:6443: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
    echo "$ac_t""yes" 1>&6
     INT64_FORMAT='"%qd"'
@@ -6449,7 +6481,7 @@ EOF
 
 
 echo $ac_n "checking alignment of short""... $ac_c" 1>&6
-echo "configure:6453: checking alignment of short" >&5
+echo "configure:6485: checking alignment of short" >&5
 if eval "test \"`echo '$''{'ac_cv_alignof_short'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -6457,7 +6489,7 @@ else
   ac_cv_alignof_short='sizeof(short)'
 else
   cat > conftest.$ac_ext <<EOF
-#line 6461 "configure"
+#line 6493 "configure"
 #include "confdefs.h"
 #include <stdio.h>
 struct { char filler; short field; } mystruct;
@@ -6469,7 +6501,7 @@ main()
   exit(0);
 }
 EOF
-if { (eval echo configure:6473: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:6505: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   ac_cv_alignof_short=`cat conftestval`
 else
@@ -6489,7 +6521,7 @@ EOF
 
 
 echo $ac_n "checking alignment of int""... $ac_c" 1>&6
-echo "configure:6493: checking alignment of int" >&5
+echo "configure:6525: checking alignment of int" >&5
 if eval "test \"`echo '$''{'ac_cv_alignof_int'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -6497,7 +6529,7 @@ else
   ac_cv_alignof_int='sizeof(int)'
 else
   cat > conftest.$ac_ext <<EOF
-#line 6501 "configure"
+#line 6533 "configure"
 #include "confdefs.h"
 #include <stdio.h>
 struct { char filler; int field; } mystruct;
@@ -6509,7 +6541,7 @@ main()
   exit(0);
 }
 EOF
-if { (eval echo configure:6513: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:6545: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   ac_cv_alignof_int=`cat conftestval`
 else
@@ -6529,7 +6561,7 @@ EOF
 
 
 echo $ac_n "checking alignment of long""... $ac_c" 1>&6
-echo "configure:6533: checking alignment of long" >&5
+echo "configure:6565: checking alignment of long" >&5
 if eval "test \"`echo '$''{'ac_cv_alignof_long'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -6537,7 +6569,7 @@ else
   ac_cv_alignof_long='sizeof(long)'
 else
   cat > conftest.$ac_ext <<EOF
-#line 6541 "configure"
+#line 6573 "configure"
 #include "confdefs.h"
 #include <stdio.h>
 struct { char filler; long field; } mystruct;
@@ -6549,7 +6581,7 @@ main()
   exit(0);
 }
 EOF
-if { (eval echo configure:6553: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:6585: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   ac_cv_alignof_long=`cat conftestval`
 else
@@ -6570,7 +6602,7 @@ EOF
 
 if [ $HAVE_LONG_LONG_INT_64 -eq 1 ] ; then
   echo $ac_n "checking alignment of long long int""... $ac_c" 1>&6
-echo "configure:6574: checking alignment of long long int" >&5
+echo "configure:6606: checking alignment of long long int" >&5
 if eval "test \"`echo '$''{'ac_cv_alignof_long_long_int'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -6578,7 +6610,7 @@ else
   ac_cv_alignof_long_long_int='sizeof(long long int)'
 else
   cat > conftest.$ac_ext <<EOF
-#line 6582 "configure"
+#line 6614 "configure"
 #include "confdefs.h"
 #include <stdio.h>
 struct { char filler; long long int field; } mystruct;
@@ -6590,7 +6622,7 @@ main()
   exit(0);
 }
 EOF
-if { (eval echo configure:6594: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:6626: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   ac_cv_alignof_long_long_int=`cat conftestval`
 else
@@ -6611,7 +6643,7 @@ EOF
 
 fi
 echo $ac_n "checking alignment of double""... $ac_c" 1>&6
-echo "configure:6615: checking alignment of double" >&5
+echo "configure:6647: checking alignment of double" >&5
 if eval "test \"`echo '$''{'ac_cv_alignof_double'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -6619,7 +6651,7 @@ else
   ac_cv_alignof_double='sizeof(double)'
 else
   cat > conftest.$ac_ext <<EOF
-#line 6623 "configure"
+#line 6655 "configure"
 #include "confdefs.h"
 #include <stdio.h>
 struct { char filler; double field; } mystruct;
@@ -6631,7 +6663,7 @@ main()
   exit(0);
 }
 EOF
-if { (eval echo configure:6635: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:6667: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   ac_cv_alignof_double=`cat conftestval`
 else
@@ -6673,9 +6705,9 @@ EOF
 
 
 echo $ac_n "checking for POSIX signal interface""... $ac_c" 1>&6
-echo "configure:6677: checking for POSIX signal interface" >&5
+echo "configure:6709: checking for POSIX signal interface" >&5
 cat > conftest.$ac_ext <<EOF
-#line 6679 "configure"
+#line 6711 "configure"
 #include "confdefs.h"
 #include <signal.h>
 int main() {
@@ -6685,7 +6717,7 @@ act.sa_flags = SA_RESTART;
 sigaction(0, &act, &oact);
 ; return 0; }
 EOF
-if { (eval echo configure:6689: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:6721: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   cat >> confdefs.h <<\EOF
 #define USE_POSIX_SIGNALS 1
@@ -6709,7 +6741,7 @@ then
 	# Extract the first word of "tclsh", so it can be a program name with args.
 set dummy tclsh; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:6713: checking for $ac_word" >&5
+echo "configure:6745: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_path_TCLSH'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -6746,7 +6778,7 @@ fi
 		# Extract the first word of "tcl", so it can be a program name with args.
 set dummy tcl; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:6750: checking for $ac_word" >&5
+echo "configure:6782: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_path_TCLSH'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -6789,7 +6821,7 @@ fi
 if test "$USE_TCL" = true
 then
 	echo $ac_n "checking for tclConfig.sh""... $ac_c" 1>&6
-echo "configure:6793: checking for tclConfig.sh" >&5
+echo "configure:6825: checking for tclConfig.sh" >&5
 	TCL_CONFIG_SH=
 	library_dirs=
 	if test -z "$TCL_DIRS"
@@ -6818,7 +6850,7 @@ USE_TK=$USE_TCL		# If TCL is disabled, disable TK
 if test "$USE_TK" = true
 then
 	echo $ac_n "checking for tkConfig.sh""... $ac_c" 1>&6
-echo "configure:6822: checking for tkConfig.sh" >&5
+echo "configure:6854: checking for tkConfig.sh" >&5
 	TK_CONFIG_SH=
 	# library_dirs are set in the check for TCL
 	for dir in $library_dirs
@@ -6840,7 +6872,7 @@ echo "configure:6822: checking for tkConfig.sh" >&5
 		# Extract the first word of "wish", so it can be a program name with args.
 set dummy wish; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:6844: checking for $ac_word" >&5
+echo "configure:6876: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_path_WISH'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -6890,7 +6922,7 @@ if test "$USE_X" = true; then
 # Uses ac_ vars as temps to allow command line to override cache and checks.
 # --without-x overrides everything else, but does not touch the cache.
 echo $ac_n "checking for X""... $ac_c" 1>&6
-echo "configure:6894: checking for X" >&5
+echo "configure:6926: checking for X" >&5
 
 # Check whether --with-x or --without-x was given.
 if test "${with_x+set}" = set; then
@@ -6952,12 +6984,12 @@ if test "$ac_x_includes" = NO; then
 
   # First, try using that file with no special directory specified.
 cat > conftest.$ac_ext <<EOF
-#line 6956 "configure"
+#line 6988 "configure"
 #include "confdefs.h"
 #include <$x_direct_test_include>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:6961: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:6993: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -7026,14 +7058,14 @@ if test "$ac_x_libraries" = NO; then
   ac_save_LIBS="$LIBS"
   LIBS="-l$x_direct_test_library $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 7030 "configure"
+#line 7062 "configure"
 #include "confdefs.h"
 
 int main() {
 ${x_direct_test_function}()
 ; return 0; }
 EOF
-if { (eval echo configure:7037: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:7069: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   LIBS="$ac_save_LIBS"
 # We can link X programs with no special library path.
@@ -7139,17 +7171,17 @@ else
     case "`(uname -sr) 2>/dev/null`" in
     "SunOS 5"*)
       echo $ac_n "checking whether -R must be followed by a space""... $ac_c" 1>&6
-echo "configure:7143: checking whether -R must be followed by a space" >&5
+echo "configure:7175: checking whether -R must be followed by a space" >&5
       ac_xsave_LIBS="$LIBS"; LIBS="$LIBS -R$x_libraries"
       cat > conftest.$ac_ext <<EOF
-#line 7146 "configure"
+#line 7178 "configure"
 #include "confdefs.h"
 
 int main() {
 
 ; return 0; }
 EOF
-if { (eval echo configure:7153: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:7185: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   ac_R_nospace=yes
 else
@@ -7165,14 +7197,14 @@ rm -f conftest*
       else
 	LIBS="$ac_xsave_LIBS -R $x_libraries"
 	cat > conftest.$ac_ext <<EOF
-#line 7169 "configure"
+#line 7201 "configure"
 #include "confdefs.h"
 
 int main() {
 
 ; return 0; }
 EOF
-if { (eval echo configure:7176: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:7208: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   ac_R_space=yes
 else
@@ -7204,7 +7236,7 @@ rm -f conftest*
     # libraries were built with DECnet support.  And karl@cs.umb.edu says
     # the Alpha needs dnet_stub (dnet does not exist).
     echo $ac_n "checking for dnet_ntoa in -ldnet""... $ac_c" 1>&6
-echo "configure:7208: checking for dnet_ntoa in -ldnet" >&5
+echo "configure:7240: checking for dnet_ntoa in -ldnet" >&5
 ac_lib_var=`echo dnet'_'dnet_ntoa | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -7212,7 +7244,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-ldnet  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 7216 "configure"
+#line 7248 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -7223,7 +7255,7 @@ int main() {
 dnet_ntoa()
 ; return 0; }
 EOF
-if { (eval echo configure:7227: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:7259: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -7245,7 +7277,7 @@ fi
 
     if test $ac_cv_lib_dnet_dnet_ntoa = no; then
       echo $ac_n "checking for dnet_ntoa in -ldnet_stub""... $ac_c" 1>&6
-echo "configure:7249: checking for dnet_ntoa in -ldnet_stub" >&5
+echo "configure:7281: checking for dnet_ntoa in -ldnet_stub" >&5
 ac_lib_var=`echo dnet_stub'_'dnet_ntoa | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -7253,7 +7285,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-ldnet_stub  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 7257 "configure"
+#line 7289 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -7264,7 +7296,7 @@ int main() {
 dnet_ntoa()
 ; return 0; }
 EOF
-if { (eval echo configure:7268: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:7300: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -7293,12 +7325,12 @@ fi
     # The nsl library prevents programs from opening the X display
     # on Irix 5.2, according to dickey@clark.net.
     echo $ac_n "checking for gethostbyname""... $ac_c" 1>&6
-echo "configure:7297: checking for gethostbyname" >&5
+echo "configure:7329: checking for gethostbyname" >&5
 if eval "test \"`echo '$''{'ac_cv_func_gethostbyname'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 7302 "configure"
+#line 7334 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char gethostbyname(); below.  */
@@ -7321,7 +7353,7 @@ gethostbyname();
 
 ; return 0; }
 EOF
-if { (eval echo configure:7325: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:7357: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_gethostbyname=yes"
 else
@@ -7342,7 +7374,7 @@ fi
 
     if test $ac_cv_func_gethostbyname = no; then
       echo $ac_n "checking for gethostbyname in -lnsl""... $ac_c" 1>&6
-echo "configure:7346: checking for gethostbyname in -lnsl" >&5
+echo "configure:7378: checking for gethostbyname in -lnsl" >&5
 ac_lib_var=`echo nsl'_'gethostbyname | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -7350,7 +7382,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-lnsl  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 7354 "configure"
+#line 7386 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -7361,7 +7393,7 @@ int main() {
 gethostbyname()
 ; return 0; }
 EOF
-if { (eval echo configure:7365: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:7397: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -7391,12 +7423,12 @@ fi
     # -lsocket must be given before -lnsl if both are needed.
     # We assume that if connect needs -lnsl, so does gethostbyname.
     echo $ac_n "checking for connect""... $ac_c" 1>&6
-echo "configure:7395: checking for connect" >&5
+echo "configure:7427: checking for connect" >&5
 if eval "test \"`echo '$''{'ac_cv_func_connect'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 7400 "configure"
+#line 7432 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char connect(); below.  */
@@ -7419,7 +7451,7 @@ connect();
 
 ; return 0; }
 EOF
-if { (eval echo configure:7423: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:7455: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_connect=yes"
 else
@@ -7440,7 +7472,7 @@ fi
 
     if test $ac_cv_func_connect = no; then
       echo $ac_n "checking for connect in -lsocket""... $ac_c" 1>&6
-echo "configure:7444: checking for connect in -lsocket" >&5
+echo "configure:7476: checking for connect in -lsocket" >&5
 ac_lib_var=`echo socket'_'connect | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -7448,7 +7480,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-lsocket $X_EXTRA_LIBS $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 7452 "configure"
+#line 7484 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -7459,7 +7491,7 @@ int main() {
 connect()
 ; return 0; }
 EOF
-if { (eval echo configure:7463: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:7495: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -7483,12 +7515,12 @@ fi
 
     # gomez@mi.uni-erlangen.de says -lposix is necessary on A/UX.
     echo $ac_n "checking for remove""... $ac_c" 1>&6
-echo "configure:7487: checking for remove" >&5
+echo "configure:7519: checking for remove" >&5
 if eval "test \"`echo '$''{'ac_cv_func_remove'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 7492 "configure"
+#line 7524 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char remove(); below.  */
@@ -7511,7 +7543,7 @@ remove();
 
 ; return 0; }
 EOF
-if { (eval echo configure:7515: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:7547: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_remove=yes"
 else
@@ -7532,7 +7564,7 @@ fi
 
     if test $ac_cv_func_remove = no; then
       echo $ac_n "checking for remove in -lposix""... $ac_c" 1>&6
-echo "configure:7536: checking for remove in -lposix" >&5
+echo "configure:7568: checking for remove in -lposix" >&5
 ac_lib_var=`echo posix'_'remove | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -7540,7 +7572,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-lposix  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 7544 "configure"
+#line 7576 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -7551,7 +7583,7 @@ int main() {
 remove()
 ; return 0; }
 EOF
-if { (eval echo configure:7555: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:7587: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -7575,12 +7607,12 @@ fi
 
     # BSDI BSD/OS 2.1 needs -lipc for XOpenDisplay.
     echo $ac_n "checking for shmat""... $ac_c" 1>&6
-echo "configure:7579: checking for shmat" >&5
+echo "configure:7611: checking for shmat" >&5
 if eval "test \"`echo '$''{'ac_cv_func_shmat'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 7584 "configure"
+#line 7616 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char shmat(); below.  */
@@ -7603,7 +7635,7 @@ shmat();
 
 ; return 0; }
 EOF
-if { (eval echo configure:7607: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:7639: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_shmat=yes"
 else
@@ -7624,7 +7656,7 @@ fi
 
     if test $ac_cv_func_shmat = no; then
       echo $ac_n "checking for shmat in -lipc""... $ac_c" 1>&6
-echo "configure:7628: checking for shmat in -lipc" >&5
+echo "configure:7660: checking for shmat in -lipc" >&5
 ac_lib_var=`echo ipc'_'shmat | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -7632,7 +7664,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-lipc  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 7636 "configure"
+#line 7668 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -7643,7 +7675,7 @@ int main() {
 shmat()
 ; return 0; }
 EOF
-if { (eval echo configure:7647: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:7679: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -7676,7 +7708,7 @@ fi
   # libraries we check for below, so use a different variable.
   #  --interran@uluru.Stanford.EDU, kb@cs.umb.edu.
   echo $ac_n "checking for IceConnectionNumber in -lICE""... $ac_c" 1>&6
-echo "configure:7680: checking for IceConnectionNumber in -lICE" >&5
+echo "configure:7712: checking for IceConnectionNumber in -lICE" >&5
 ac_lib_var=`echo ICE'_'IceConnectionNumber | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -7684,7 +7716,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-lICE $X_EXTRA_LIBS $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 7688 "configure"
+#line 7720 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -7695,7 +7727,7 @@ int main() {
 IceConnectionNumber()
 ; return 0; }
 EOF
-if { (eval echo configure:7699: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:7731: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -7728,7 +7760,7 @@ fi
 	
 	X11_LIBS=""
 	echo $ac_n "checking for XOpenDisplay in -lX11""... $ac_c" 1>&6
-echo "configure:7732: checking for XOpenDisplay in -lX11" >&5
+echo "configure:7764: checking for XOpenDisplay in -lX11" >&5
 ac_lib_var=`echo X11'_'XOpenDisplay | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -7736,7 +7768,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-lX11 ${X_PRE_LIBS} $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 7740 "configure"
+#line 7772 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -7747,7 +7779,7 @@ int main() {
 XOpenDisplay()
 ; return 0; }
 EOF
-if { (eval echo configure:7751: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:7783: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -7794,17 +7826,17 @@ then
 	PWD_INCDIR=no
 	ac_safe=`echo "pwd.h" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for pwd.h""... $ac_c" 1>&6
-echo "configure:7798: checking for pwd.h" >&5
+echo "configure:7830: checking for pwd.h" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 7803 "configure"
+#line 7835 "configure"
 #include "confdefs.h"
 #include <pwd.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:7808: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:7840: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -8066,6 +8098,7 @@ s%@STRTOL@%$STRTOL%g
 s%@STRTOUL@%$STRTOUL%g
 s%@STRCASECMP@%$STRCASECMP%g
 s%@HPUXMATHLIB@%$HPUXMATHLIB%g
+s%@HAVE_RL_COMPLETION_APPEND_CHARACTER@%$HAVE_RL_COMPLETION_APPEND_CHARACTER%g
 s%@HAVE_POSIX_SIGNALS@%$HAVE_POSIX_SIGNALS%g
 s%@TCLSH@%$TCLSH%g
 s%@TCL_CONFIG_SH@%$TCL_CONFIG_SH%g
diff --git a/src/configure.in b/src/configure.in
index d08fbc9bef..1bef6cd772 100644
--- a/src/configure.in
+++ b/src/configure.in
@@ -840,11 +840,16 @@ AC_CHECK_FUNC(rint,
 	      AC_DEFINE(HAVE_RINT),
 	      AC_CHECK_LIB(m, rint, AC_DEFINE(HAVE_RINT), , $HPUXMATHLIB))
 
+dnl Some old versions of libreadline don't have rl_completion_append_character
+AC_EGREP_HEADER(rl_completion_append_character, readline.h,
+	AC_DEFINE(HAVE_RL_COMPLETION_APPEND_CHARACTER),
+	[AC_EGREP_HEADER(rl_completion_append_character, readline/readline.h,
+		AC_DEFINE(HAVE_RL_COMPLETION_APPEND_CHARACTER))])
+AC_SUBST(HAVE_RL_COMPLETION_APPEND_CHARACTER)
 
 dnl Check for GNU style long options support (getopt_long)
 AC_CHECK_FUNCS(getopt_long)
 
-
 AC_MSG_CHECKING(for finite() macro or function)
 AC_TRY_LINK([#include <math.h>],
 	[int dummy=finite(1.0);],
diff --git a/src/include/config.h.in b/src/include/config.h.in
index 472bb68bf6..ed8356c293 100644
--- a/src/include/config.h.in
+++ b/src/include/config.h.in
@@ -454,6 +454,9 @@ extern void srandom(unsigned int seed);
 /* Set to 1 if you have libhistory.a */
 #undef HAVE_LIBHISTORY
 
+/* Set to 1 if your libreadline defines rl_completion_append_character */
+#undef HAVE_RL_COMPLETION_APPEND_CHARACTER
+
 /* Set to 1 if you have getopt_long() (GNU long options) */
 #undef HAVE_GETOPT_LONG