Only use terminal escapes (in $TB/$TN) when printing to a terminal.

configure.in

@@ -50,8 +50,11 @@ fi
 SHTOOL="$ac_cv_shtool"
 dnl AC_SUBST(SHTOOL)dnl
 
-TB="`$SHTOOL echo -e '%B' 2>/dev/null`"
-TN="`$SHTOOL echo -e '%b' 2>/dev/null`"
+TB="" TN=""
+if test -t 1; then
+	TB="`$SHTOOL echo -e '%B' 2>/dev/null`"
+	TN="`$SHTOOL echo -e '%b' 2>/dev/null`"
+fi
 
 OPENLDAP_CVS=""
 if test -d $ac_aux_dir/CVS; then

tests/scripts/all

@@ -14,8 +14,13 @@
 ## <http://www.OpenLDAP.org/license.html>.
 
 . $SRCDIR/scripts/defines.sh
-TB=`$SHTOOL echo -e "%B"`
-TN=`$SHTOOL echo -e "%b"`
+
+TB="" TN=""
+if test -t 1 ; then
+	TB=`$SHTOOL echo -e "%B" 2>/dev/null`
+	TN=`$SHTOOL echo -e "%b" 2>/dev/null`
+fi
+
 SLEEPTIME=10
 
 echo ">>>>> Executing all LDAP tests for $BACKEND"

tests/scripts/sql-all

@@ -14,8 +14,13 @@
 ## <http://www.OpenLDAP.org/license.html>.
 
 SHTOOL="$SRCDIR/../build/shtool"
-TB=`$SHTOOL echo -e "%B"`
-TN=`$SHTOOL echo -e "%b"`
+
+TB="" TN=""
+if test -t 1 ; then
+	TB=`$SHTOOL echo -e "%B" 2>/dev/null`
+	TN=`$SHTOOL echo -e "%b" 2>/dev/null`
+fi
+
 SLEEPTIME=10
 
 echo "#######################################################################"