:
#	@(#) diff3.sh 1.4 88/11/11 
#
#
#	      UNIX is a registered trademark of AT&T
#		Portions Copyright 1976-1989 AT&T
#	Portions Copyright 1980-1989 Microsoft Corporation
#    Portions Copyright 1983-1989 The Santa Cruz Operation, Inc
#		      All Rights Reserved

:
#	Copyright (c) 1984, 1986, 1987, 1988 AT&T
#	  All Rights Reserved

#	THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF AT&T
#	The copyright notice above does not evidence any
#	actual or intended publication of such source code.


e=
case $1 in
-*)
	e=$1
	shift;;
esac
if test $# = 3 -a -f $1 -a -f $2 -a -f $3
then
	:
else
	echo usage: diff3 file1 file2 file3 1>&2
	exit
fi
trap "rm -f /tmp/d3[ab]$$" 0 1 2 13 15
diff $1 $3 >/tmp/d3a$$
diff $2 $3 >/tmp/d3b$$
/usr/lib/diff3prog $e /tmp/d3[ab]$$ $1 $2 $3
