#!/bin/sh

: >dlog

until [ -s dlog ]
do

mkdir -p gnu
(cd gnu
TEST_TAR_FORMAT=gnu
export TEST_TAR_FORMAT
TAR_OPTIONS="-H gnu"
export TAR_OPTIONS
rm -rf *


test -z  || exit 77


mkdir foo
touch  foo/file1
touch  foo/file2

mkdir foo/a
touch  foo/a/filea

mkdir foo/b
touch foo/b/fileb

mkdir foo/c
touch foo/c/filec


echo "First dump"
echo "First dump">&2
tar -g incr -cf arch.1 -v foo 2>tmperr
sort tmperr >&2

# Shuffle directories:
(cd foo
mv a $$
mv c a
mv b c
mv $$ b)

echo "Second dump"
echo "Second dump" >&2
tar -g incr -cf arch.2 -v foo 2>tmperr
sort tmperr >&2

tar xfg arch.1 /dev/null

echo "Begin directory listing 1"
find foo | sort
echo "End directory listing 1"

tar xfgv arch.2 /dev/null
echo Begin directory listing 2
find foo | sort
echo End directory listing 2
) 1>log1

mkdir -p oldgnu
(cd oldgnu
TEST_TAR_FORMAT=oldgnu
export TEST_TAR_FORMAT
TAR_OPTIONS="-H oldgnu"
export TAR_OPTIONS
rm -rf *


test -z  || exit 77


mkdir foo
touch  foo/file1
touch  foo/file2

mkdir foo/a
touch  foo/a/filea

mkdir foo/b
touch  foo/b/fileb

mkdir foo/c
touch  foo/c/filec

echo "First dump"
echo "First dump">&2
tar -g incr -cf arch.1 -v foo 2>tmperr
sort tmperr >&2

# Shuffle directories:
(cd foo
mv a $$
mv c a
mv b c
mv $$ b)

echo "Second dump"
echo "Second dump" >&2
tar -g incr -cf arch.2 -v foo 2>tmperr
sort tmperr >&2

tar xfg arch.1 /dev/null

echo "Begin directory listing 1"
find foo | sort
echo "End directory listing 1"

tar xfgv arch.2 /dev/null
echo Begin directory listing 2
find foo | sort
echo End directory listing 2
) 1>log2

diff -u log1 log2 > dlog
done