#!/bin/sh

# Ensure that "-" means "standard input".

. "${srcdir=.}/init.sh"; path_prepend_ ../src

fail=0

cat <<EOF > exp || fail=1

--- -

+++ b

@@ -1 +1 @@

-a

+b

EOF

echo a > a

echo b > b

returns_ 1 diff -u - b < a > out 2> err || fail=1

# Remove date and time.

sed -e 's/^\([-+*][-+*][-+*] [^	]*\)	.*/\1/' out > k; mv k out

compare exp out || fail=1

Exit $fail