#!/bin/sh
# Ensure that "-" means "standard input".

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

fail=0

echo a > a || framework_failure_
echo b > b || framework_failure_
cat <<'EOF' > exp || framework_failure_
--- -
+++ b
@@ -1 +1 @@
-a
+b
EOF

returns_ 1 diff -u - b < a > out 2> err || fail=1
# Remove date and time.
sed -e 's/^\([-+*][-+*][-+*] [^	]*\)	.*/\1/' out >outk || framework_failure_
compare exp outk || fail=1
compare /dev/null err || fail=1

mkdir d || framework_failure_
echo a >d/a || framework_failure_

diff -u - a <d >out 2>err || fail=1
compare /dev/null out || fail=1
compare /dev/null err || fail=1

Exit $fail