Output terminal control sequences only when output is a terminal.

--- kbd-1.08/src/unicode_start	2002-11-22 19:23:00.000000000 -0500

+++ kbd-1.08/src/unicode_start	2002-11-22 19:24:34.000000000 -0500

@@ -1,4 +1,4 @@

-#!/bin/sh

+#!/bin/bash

 # Enables Unicode processing in the current console.

 #

 # 1. The input side: the keyboard driver.

@@ -25,7 +25,9 @@

 # Tell the console output driver that the bytes arriving are UTF-8

 # encoded multibyte sequences.

-echo -n -e '\033%G'

+if test -t 1 -a -t 2 ; then

+	echo -n -e '\033%G'

+fi

 # Tell the graphics card how to display Unicode characters not

 # contained in the IBM 437 character set (on PCs). The font should

--- kbd-1.08/src/unicode_stop	2002-11-22 19:23:30.000000000 -0500

+++ kbd-1.08/src/unicode_stop	2002-11-22 19:24:15.000000000 -0500

@@ -1,4 +1,6 @@

 #!/bin/sh

 # stop unicode

 kbd_mode -a

-echo -n -e '\033%@'

+if test -t ; then

+	echo -n -e '\033%@'

+fi