15 files changed, 952 insertions, 164 deletions
diff --git a/testsuite/check.sh b/testsuite/check.sh
index 07b0d34..6bdf2d7 100755
--- a/testsuite/check.sh
+++ b/testsuite/check.sh
@@ -32,9 +32,16 @@ in="${testdir}"/test.txt
 in_lz="${testdir}"/test.txt.lz
 in_tar="${testdir}"/test.txt.tar
 in_tar_lz="${testdir}"/test.txt.tar.lz
+inbad1="${testdir}"/test_bad1.txt
+inbad2="${testdir}"/test_bad2.txt
 test3="${testdir}"/test3.tar
 test3_lz="${testdir}"/test3.tar.lz
-test3a_lz="${testdir}"/test3a.tar.lz
+test3dir_lz="${testdir}"/test3_dir.tar.lz
+test3dot_lz="${testdir}"/test3_dot.tar.lz
+t155="${testdir}"/t155.tar
+t155_lz="${testdir}"/t155.tar.lz
+tlzit1="${testdir}"/tlz_in_tar1.tar
+tlzit2="${testdir}"/tlz_in_tar2.tar
 bad1="${testdir}"/test3_bad1.tar
 bad2="${testdir}"/test3_bad2.tar
 bad3="${testdir}"/test3_bad3.tar
@@ -48,10 +55,19 @@ bad5_lz="${testdir}"/test3_bad5.tar.lz
 bad6_lz="${testdir}"/test3_bad6.tar.lz
 eof_lz="${testdir}"/eof.tar.lz
 fail=0
+lwarn=0
 test_failed() { fail=1 ; printf " $1" ; [ -z "$2" ] || printf "($2)" ; }
+lzlib_1_11() { [ ${lwarn} = 0 ] &&
+	printf "\nwarning: testing --keep-damaged requires lzlib-1.11-rc2 or newer\n$1"
+	lwarn=1 ; }
 
-# Description of test files for lziprecover:
+# Description of test files for tarlz:
+# t155.tar[.lz]      directory + file + link + eof, all with 155 char names
+# test_bad1.tar.lz:  truncated at offset 6000 (of 7495)
+# test_bad2.tar.lz:  byte at offset 6000 changed from 0x56 to 0x46
 # test3.tar:         3 members (foo bar baz) + 2 zeroed 512-byte blocks
+# test3_dir.tar.lz:  like test3.tar.lz but members /dir/foo /dir/bar /dir/baz
+# test3_dot.tar.lz:  like test3.tar.lz but members ./foo ./bar ./baz
 # test3_bad1.tar:    byte at offset  259 changed from 't' to '0' (magic)
 # test3_bad2.tar:    byte at offset 1283 changed from 't' to '0' (magic)
 # test3_bad3.tar:    byte at offset 2559 changed from 0x00 to 0x20 (padding)
@@ -60,137 +76,191 @@ test_failed() { fail=1 ; printf " $1" ; [ -z "$2" ] || printf "($2)" ; }
 # test3_bad5.tar:    510 zeros + "LZ" prepended to test3.tar (bogus lz header)
 # test3_bad1.tar.lz: byte at offset    2 changed from 'I' to 'i' (magic)
 # test3_bad2.tar.lz: byte at offset   49 changed from 0x49 to 0x69 (mid stream)
-# test3_bad3.tar.lz: byte at offset  149 changed from 0x2D to 0x3D (mid stream)
+# test3_bad3.tar.lz: byte at offset  176 changed from 0x7D to 0x6D (mid stream)
 # test3_bad4.tar.lz: combined damage of test3_bad2.tar.lz and test3_bad3.tar.lz
 # test3_bad5.tar.lz: [71-134] --> zeroed (first trailer + seconf header)
 # test3_bad6.tar.lz: 510 zeros prepended to test3.tar.lz (header in two blocks)
+# tlz_in_tar1.tar:   1 member (test3.tar.lz) first magic damaged
+# tlz_in_tar2.tar:   2 members (foo test3.tar.lz) first magic damaged
+# ug32chars.tar.lz:  1 member (foo) with 32-character owner and group names
 
 printf "testing tarlz-%s..." "$2"
 
-"${TARLZ}" -qtf ${in}
+"${TARLZ}" -q -tf "${in}"
 [ $? = 2 ] || test_failed $LINENO
-"${TARLZ}" -qtf ${in_lz}
+"${TARLZ}" -q -tf "${in_lz}"
 [ $? = 2 ] || test_failed $LINENO
-"${TARLZ}" -qtf nx_file
+"${TARLZ}" -q -tf nx_file
 [ $? = 1 ] || test_failed $LINENO
 "${TARLZ}" -tf 2> /dev/null
 [ $? = 1 ] || test_failed $LINENO
-"${TARLZ}" -qcf out.tar.lz
+"${TARLZ}" -q -cf out.tar.lz
 [ $? = 1 ] || test_failed $LINENO
 [ ! -e out.tar.lz ] || test_failed $LINENO
 "${TARLZ}" -rf out.tar.lz || test_failed $LINENO
 [ ! -e out.tar.lz ] || test_failed $LINENO
-"${TARLZ}" -qrf - ${in}
+"${TARLZ}" -q -rf - "${in}"
 [ $? = 1 ] || test_failed $LINENO
 [ ! -e - ] || test_failed $LINENO
-"${TARLZ}" -qr ${in}
+"${TARLZ}" -q -r "${in}"
 [ $? = 1 ] || test_failed $LINENO
-"${TARLZ}" --uncompressed -qrf out.tar ${in}
+"${TARLZ}" --uncompressed -q -rf out.tar "${in}"
 [ $? = 1 ] || test_failed $LINENO
 [ ! -e out.tar ] || test_failed $LINENO
-cat ${test3_lz} > test.tar.lz || framework_failure
-"${TARLZ}" --uncompressed -qrf test.tar.lz ${in}
+cat "${test3_lz}" > test.tar.lz || framework_failure
+"${TARLZ}" --uncompressed -q -rf test.tar.lz "${in}"
 [ $? = 1 ] || test_failed $LINENO
-cmp ${test3_lz} test.tar.lz || test_failed $LINENO
+cmp "${test3_lz}" test.tar.lz || test_failed $LINENO
 rm -f test.tar.lz || framework_failure
-cat ${test3} > test.tar || framework_failure
-"${TARLZ}" -qrf test.tar ${in}
+cat "${test3}" > test.tar || framework_failure
+"${TARLZ}" -q -rf test.tar "${in}"
 [ $? = 2 ] || test_failed $LINENO
-cmp ${test3} test.tar || test_failed $LINENO
+cmp "${test3}" test.tar || test_failed $LINENO
 rm -f test.tar || framework_failure
-"${TARLZ}" -qc ${in} nx_file > /dev/null
+"${TARLZ}" -q -c "${in}" nx_file > /dev/null
 [ $? = 1 ] || test_failed $LINENO
-"${TARLZ}" -qc -C nx_dir ${in}
+"${TARLZ}" -q -c -C nx_dir "${in}"
 [ $? = 1 ] || test_failed $LINENO
-"${TARLZ}" -qx -C nx_dir ${test3_lz}
+"${TARLZ}" -q -x -C nx_dir "${test3_lz}"
 [ $? = 1 ] || test_failed $LINENO
-"${TARLZ}" -qcr
+"${TARLZ}" -q -cr
 [ $? = 1 ] || test_failed $LINENO
-"${TARLZ}" -qct
+"${TARLZ}" -q -ct
 [ $? = 1 ] || test_failed $LINENO
-"${TARLZ}" -qcx
+"${TARLZ}" -q -cx
 [ $? = 1 ] || test_failed $LINENO
-"${TARLZ}" -qtx
+"${TARLZ}" -q -tx
 [ $? = 1 ] || test_failed $LINENO
-"${TARLZ}" -qctx
+"${TARLZ}" -q -ctx
 [ $? = 1 ] || test_failed $LINENO
 "${TARLZ}" --help > /dev/null || test_failed $LINENO
 "${TARLZ}" -V > /dev/null || test_failed $LINENO
-"${TARLZ}" --bad_option -tf ${test3_lz} 2> /dev/null
+"${TARLZ}" --bad_option -tf "${test3_lz}" 2> /dev/null
 [ $? = 1 ] || test_failed $LINENO
 "${TARLZ}" -tf 2> /dev/null
 [ $? = 1 ] || test_failed $LINENO
-"${TARLZ}" --owner=invalid_oner_name -tf ${test3_lz} 2> /dev/null
+"${TARLZ}" --owner=invalid_oner_name -tf "${test3_lz}" 2> /dev/null
 [ $? = 1 ] || test_failed $LINENO
-"${TARLZ}" --group=invalid_goup_name -tf ${test3_lz} 2> /dev/null
+"${TARLZ}" --group=invalid_goup_name -tf "${test3_lz}" 2> /dev/null
 [ $? = 1 ] || test_failed $LINENO
 
-"${TARLZ}" -tf ${eof_lz} || test_failed $LINENO
-"${TARLZ}" -xf ${eof_lz} || test_failed $LINENO
-"${TARLZ}" -tf ${in_tar_lz} > /dev/null || test_failed $LINENO
-"${TARLZ}" -xf ${in_tar_lz} || test_failed $LINENO
-cmp ${in} test.txt || test_failed $LINENO
+# test --list and --extract
+"${TARLZ}" -tf "${eof_lz}" --missing-crc || test_failed $LINENO
+"${TARLZ}" -xf "${eof_lz}" --missing-crc || test_failed $LINENO
+"${TARLZ}" -tf "${in_tar_lz}" --missing-crc > /dev/null || test_failed $LINENO
+"${TARLZ}" -xf "${in_tar_lz}" --missing-crc || test_failed $LINENO
+cmp "${in}" test.txt || test_failed $LINENO
 rm -f test.txt || framework_failure
-"${TARLZ}" -C nx_dir -tf ${in_tar} > /dev/null || test_failed $LINENO
-"${TARLZ}" -xf ${in_tar} || test_failed $LINENO
-cmp ${in} test.txt || test_failed $LINENO
+"${TARLZ}" -C nx_dir -tf "${in_tar}" > /dev/null || test_failed $LINENO
+"${TARLZ}" -xf "${in_tar}" --missing-crc || test_failed $LINENO
+cmp "${in}" test.txt || test_failed $LINENO
 rm -f test.txt || framework_failure
 
+printf "foo\n" > cfoo || framework_failure
+printf "bar\n" > cbar || framework_failure
+printf "baz\n" > cbaz || framework_failure
 rm -f foo bar baz || framework_failure
-"${TARLZ}" -xf ${test3_lz} || test_failed $LINENO
-[ -e foo ] || test_failed $LINENO
-[ -e bar ] || test_failed $LINENO
-[ -e baz ] || test_failed $LINENO
+"${TARLZ}" -xf "${test3_lz}" --missing-crc || test_failed $LINENO
+cmp cfoo foo || test_failed $LINENO
+cmp cbar bar || test_failed $LINENO
+cmp cbaz baz || test_failed $LINENO
 rm -f foo bar baz || framework_failure
-"${TARLZ}" -xf ${test3} || test_failed $LINENO
-[ -e foo ] || test_failed $LINENO
-[ -e bar ] || test_failed $LINENO
-[ -e baz ] || test_failed $LINENO
+"${TARLZ}" -q -xf "${test3_lz}" ./foo ./bar ./baz || test_failed $LINENO
+cmp cfoo foo || test_failed $LINENO
+cmp cbar bar || test_failed $LINENO
+cmp cbaz baz || test_failed $LINENO
 rm -f foo bar baz || framework_failure
-"${TARLZ}" -qxf ${test3a_lz} || test_failed $LINENO
-[ -e dir/foo ] || test_failed $LINENO
-[ -e dir/bar ] || test_failed $LINENO
-[ -e dir/baz ] || test_failed $LINENO
+"${TARLZ}" -xf "${test3}" --missing-crc || test_failed $LINENO
+cmp cfoo foo || test_failed $LINENO
+cmp cbar bar || test_failed $LINENO
+cmp cbaz baz || test_failed $LINENO
+rm -f foo bar baz || framework_failure
+"${TARLZ}" -q -xf "${test3dot_lz}" --missing-crc || test_failed $LINENO
+cmp cfoo foo || test_failed $LINENO
+cmp cbar bar || test_failed $LINENO
+cmp cbaz baz || test_failed $LINENO
+rm -f foo bar baz || framework_failure
+"${TARLZ}" -q -xf "${test3dot_lz}" foo bar baz || test_failed $LINENO
+cmp cfoo foo || test_failed $LINENO
+cmp cbar bar || test_failed $LINENO
+cmp cbaz baz || test_failed $LINENO
+rm -f foo bar baz || framework_failure
+"${TARLZ}" -q -xf "${test3dir_lz}" --missing-crc || test_failed $LINENO
+cmp cfoo dir/foo || test_failed $LINENO
+cmp cbar dir/bar || test_failed $LINENO
+cmp cbaz dir/baz || test_failed $LINENO
+rm -rf dir || framework_failure
+"${TARLZ}" -q -xf "${test3dir_lz}" dir/foo dir/bar dir/baz || test_failed $LINENO
+cmp cfoo dir/foo || test_failed $LINENO
+cmp cbar dir/bar || test_failed $LINENO
+cmp cbaz dir/baz || test_failed $LINENO
 rm -rf dir || framework_failure
 
-cat ${in} > test.txt || framework_failure
+# test --concatenate
+cat "${in_tar_lz}" > out.tar.lz || framework_failure
+"${TARLZ}" -Af out.tar.lz "${test3_lz}" || test_failed $LINENO
+"${TARLZ}" -xf out.tar.lz || test_failed $LINENO
+cmp "${in}" test.txt || test_failed $LINENO
+cmp cfoo foo || test_failed $LINENO
+cmp cbar bar || test_failed $LINENO
+cmp cbaz baz || test_failed $LINENO
+touch aout.tar.lz || framework_failure		# concatenate to empty file
+"${TARLZ}" -Af aout.tar.lz "${in_tar_lz}" "${test3_lz}" || test_failed $LINENO
+cmp out.tar.lz aout.tar.lz || test_failed $LINENO
+cat "${in_tar_lz}" > aout.tar.lz || framework_failure
+"${TARLZ}" -Aqf aout.tar.lz "${test3_lz}" "${test3}"
+[ $? = 2 ] || test_failed $LINENO
+cmp out.tar.lz aout.tar.lz || test_failed $LINENO
+rm -f test.txt foo bar baz out.tar.lz aout.tar.lz || framework_failure
+
+# test --create
+cat "${in}" > test.txt || framework_failure
 "${TARLZ}" -0 -cf out.tar.lz test.txt || test_failed $LINENO
 rm -f test.txt || framework_failure
-"${TARLZ}" -xf out.tar.lz || test_failed $LINENO
-cmp ${in} test.txt || test_failed $LINENO
-cat ${in} > test.txt || framework_failure
+"${TARLZ}" -xf out.tar.lz --missing-crc || test_failed $LINENO
+cmp "${in}" test.txt || test_failed $LINENO
+cat "${in}" > test.txt || framework_failure
 "${TARLZ}" --uncompressed -cf out.tar test.txt || test_failed $LINENO
 rm -f test.txt || framework_failure
-"${TARLZ}" -xf out.tar || test_failed $LINENO
-cmp ${in} test.txt || test_failed $LINENO
+"${TARLZ}" -xf out.tar --missing-crc || test_failed $LINENO
+cmp "${in}" test.txt || test_failed $LINENO
 rm -f test.txt out.tar out.tar.lz || framework_failure
 
-printf "foo" > foo || framework_failure
+cat cfoo > foo || framework_failure
 rm -f bar || framework_failure
-printf "baz" > baz || framework_failure
-"${TARLZ}" -qcf out.tar.lz foo bar baz
+cat cbaz > baz || framework_failure
+"${TARLZ}" -q -cf out.tar.lz foo bar baz
 [ $? = 1 ] || test_failed $LINENO
 rm -f foo bar baz || framework_failure
-"${TARLZ}" -xf out.tar.lz || test_failed $LINENO
-[ -e foo ] || test_failed $LINENO
+"${TARLZ}" -xf out.tar.lz --missing-crc || test_failed $LINENO
+cmp cfoo foo || test_failed $LINENO
 [ ! -e bar ] || test_failed $LINENO
-[ -e baz ] || test_failed $LINENO
+cmp cbaz baz || test_failed $LINENO
 rm -f foo bar baz || framework_failure
-"${TARLZ}" -qxf out.tar.lz bar
+"${TARLZ}" -q -xf out.tar.lz bar
 [ $? = 1 ] || test_failed $LINENO
 [ ! -e foo ] || test_failed $LINENO
 [ ! -e bar ] || test_failed $LINENO
 [ ! -e baz ] || test_failed $LINENO
 rm -f out.tar.lz || framework_failure
 
-printf "foo" > foo || framework_failure
-printf "bar" > bar || framework_failure
-printf "baz" > baz || framework_failure
+cat cfoo > foo || framework_failure
+cat cbar > bar || framework_failure
+cat cbaz > baz || framework_failure
 "${TARLZ}" -0 -cf out.tar.lz foo bar baz || test_failed $LINENO
+"${TARLZ}" -0 -q -cf aout.tar.lz foo bar aout.tar.lz baz || test_failed $LINENO
+cmp out.tar.lz aout.tar.lz || test_failed $LINENO
+"${TARLZ}" -q -Af aout.tar.lz aout.tar.lz || test_failed $LINENO
+cmp out.tar.lz aout.tar.lz || test_failed $LINENO
+"${TARLZ}" -q -rf aout.tar.lz aout.tar.lz || test_failed $LINENO
+cmp out.tar.lz aout.tar.lz || test_failed $LINENO
+rm -f aout.tar.lz || framework_failure
+
+# test --append
 "${TARLZ}" --dsolid -0 -cf aout.tar.lz foo bar baz || test_failed $LINENO
 cmp out.tar.lz aout.tar.lz || test_failed $LINENO
 rm -f aout.tar.lz || framework_failure
-"${TARLZ}" -0 -qcf aout.tar.lz foo/ ./bar ./baz/ || test_failed $LINENO
+"${TARLZ}" -0 -q -cf aout.tar.lz foo/ ./bar ./baz/ || test_failed $LINENO
 cmp out.tar.lz aout.tar.lz || test_failed $LINENO
 rm -f aout.tar.lz || framework_failure
 "${TARLZ}" -0 -cf aout.tar.lz foo || test_failed $LINENO
@@ -204,51 +274,49 @@ cmp out.tar.lz aout.tar.lz || test_failed $LINENO
 cmp out.tar.lz aout.tar.lz || test_failed $LINENO
 "${TARLZ}" -0 -rf aout.tar.lz -C nx_dir || test_failed $LINENO
 cmp out.tar.lz aout.tar.lz || test_failed $LINENO
-"${TARLZ}" -0 -qrf aout.tar.lz nx_file
+"${TARLZ}" -0 -q -rf aout.tar.lz nx_file
 [ $? = 1 ] || test_failed $LINENO
 cmp out.tar.lz aout.tar.lz || test_failed $LINENO
-cat ${eof_lz} > aout.tar.lz || framework_failure	# append to empty archive
+cat "${eof_lz}" > aout.tar.lz || framework_failure	# append to empty archive
 "${TARLZ}" -0 -rf aout.tar.lz foo bar baz || test_failed $LINENO
 cmp out.tar.lz aout.tar.lz || test_failed $LINENO
-mv -f foo foo.orig || framework_failure
-mv -f bar bar.orig || framework_failure
-mv -f baz baz.orig || framework_failure
+rm -f foo bar baz || framework_failure
 "${TARLZ}" -xf out.tar.lz foo/ bar// baz/// || test_failed $LINENO
-cmp foo foo.orig || test_failed $LINENO
-cmp bar bar.orig || test_failed $LINENO
-cmp baz baz.orig || test_failed $LINENO
+cmp cfoo foo || test_failed $LINENO
+cmp cbar bar || test_failed $LINENO
+cmp cbaz baz || test_failed $LINENO
 rm -f foo bar baz || framework_failure
 "${TARLZ}" -xf out.tar.lz || test_failed $LINENO
-cmp foo foo.orig || test_failed $LINENO
-cmp bar bar.orig || test_failed $LINENO
-cmp baz baz.orig || test_failed $LINENO
+cmp cfoo foo || test_failed $LINENO
+cmp cbar bar || test_failed $LINENO
+cmp cbaz baz || test_failed $LINENO
 mkdir dir1 || framework_failure
 "${TARLZ}" -C dir1 -xf out.tar.lz || test_failed $LINENO
-cmp dir1/foo foo.orig || test_failed $LINENO
-cmp dir1/bar bar.orig || test_failed $LINENO
-cmp dir1/baz baz.orig || test_failed $LINENO
+cmp cfoo dir1/foo || test_failed $LINENO
+cmp cbar dir1/bar || test_failed $LINENO
+cmp cbaz dir1/baz || test_failed $LINENO
 rm -f aout.tar.lz foo bar baz || framework_failure
 "${TARLZ}" -C dir1 -0 -cf aout.tar.lz foo bar baz || test_failed $LINENO
 "${TARLZ}" -xf aout.tar.lz || test_failed $LINENO
-cmp foo foo.orig || test_failed $LINENO
-cmp bar bar.orig || test_failed $LINENO
-cmp baz baz.orig || test_failed $LINENO
+cmp cfoo foo || test_failed $LINENO
+cmp cbar bar || test_failed $LINENO
+cmp cbaz baz || test_failed $LINENO
 rm -f aout.tar.lz foo bar baz || framework_failure
 "${TARLZ}" -C dir1 -0 -c foo bar baz | "${TARLZ}" -x || test_failed $LINENO
-cmp foo foo.orig || test_failed $LINENO
-cmp bar bar.orig || test_failed $LINENO
-cmp baz baz.orig || test_failed $LINENO
+cmp cfoo foo || test_failed $LINENO
+cmp cbar bar || test_failed $LINENO
+cmp cbaz baz || test_failed $LINENO
 rm -f dir1/foo dir1/bar dir1/baz || framework_failure
 "${TARLZ}" -0 -c foo bar baz | "${TARLZ}" -C dir1 -x || test_failed $LINENO
-cmp dir1/foo foo.orig || test_failed $LINENO
-cmp dir1/bar bar.orig || test_failed $LINENO
-cmp dir1/baz baz.orig || test_failed $LINENO
+cmp cfoo dir1/foo || test_failed $LINENO
+cmp cbar dir1/bar || test_failed $LINENO
+cmp cbaz dir1/baz || test_failed $LINENO
 rm -f dir1/foo dir1/bar dir1/baz || framework_failure
 "${TARLZ}" -0 -c foo bar baz | "${TARLZ}" -x foo bar baz -C dir1 ||
 	test_failed $LINENO
-cmp dir1/foo foo.orig || test_failed $LINENO
-cmp dir1/bar bar.orig || test_failed $LINENO
-cmp dir1/baz baz.orig || test_failed $LINENO
+cmp cfoo dir1/foo || test_failed $LINENO
+cmp cbar dir1/bar || test_failed $LINENO
+cmp cbaz dir1/baz || test_failed $LINENO
 rm -f foo dir1/bar baz || framework_failure
 "${TARLZ}" -0 -cf aout.tar.lz -C dir1 foo -C .. bar -C dir1 baz ||
 	test_failed $LINENO
@@ -256,22 +324,23 @@ cmp out.tar.lz aout.tar.lz || test_failed $LINENO
 "${TARLZ}" -0 -cf aout.tar.lz dir1/foo dir1/baz || test_failed $LINENO
 rm -rf dir1 || framework_failure
 "${TARLZ}" -xf aout.tar.lz dir1 || test_failed $LINENO
-cmp dir1/foo foo.orig || test_failed $LINENO
-cmp dir1/baz baz.orig || test_failed $LINENO
+cmp cfoo dir1/foo || test_failed $LINENO
+cmp cbaz dir1/baz || test_failed $LINENO
 rm -rf dir1 || framework_failure
 rm -f out.tar.lz aout.tar.lz || framework_failure
 
 # append to solid archive
-printf "foo" > foo || framework_failure
-printf "bar" > bar || framework_failure
-printf "baz" > baz || framework_failure
+cat cfoo > foo || framework_failure
+cat cbar > bar || framework_failure
+cat cbaz > baz || framework_failure
 "${TARLZ}" --solid -0 -cf out.tar.lz foo || test_failed $LINENO
+cat out.tar.lz > aout.tar.lz || framework_failure
 for i in --asolid --dsolid --solid -0 ; do
-	"${TARLZ}" $i -qrf out.tar.lz bar baz
+	"${TARLZ}" $i -q -rf out.tar.lz bar baz
 	[ $? = 2 ] || test_failed $LINENO $i
-	[ -e out.tar.lz ] || test_failed $LINENO $i
+	cmp out.tar.lz aout.tar.lz || test_failed $LINENO $i
 done
-rm -f out.tar.lz || framework_failure
+rm -f out.tar.lz aout.tar.lz || framework_failure
 for i in --asolid --dsolid -0 ; do
 	for j in --asolid --dsolid --solid -0 ; do
 		"${TARLZ}" $i -0 -cf out.tar.lz foo ||
@@ -280,14 +349,15 @@ for i in --asolid --dsolid -0 ; do
 			test_failed $LINENO "$i $j"
 		rm -f foo bar baz || framework_failure
 		"${TARLZ}" -xf out.tar.lz || test_failed $LINENO "$i $j"
-		cmp foo foo.orig || test_failed $LINENO "$i $j"
-		cmp bar bar.orig || test_failed $LINENO "$i $j"
-		cmp baz baz.orig || test_failed $LINENO "$i $j"
+		cmp cfoo foo || test_failed $LINENO "$i $j"
+		cmp cbar bar || test_failed $LINENO "$i $j"
+		cmp cbaz baz || test_failed $LINENO "$i $j"
 		rm -f out.tar.lz || framework_failure
 	done
 done
-rm -f foo foo.orig bar bar.orig baz baz.orig || framework_failure
+rm -f foo bar baz || framework_failure
 
+# test directories and links
 mkdir dir1 || framework_failure
 "${TARLZ}" -0 -cf out.tar dir1 || test_failed $LINENO
 rmdir dir1 || framework_failure
@@ -302,131 +372,222 @@ rmdir dir1 || framework_failure
 rmdir dir1
 rm -f out.tar || framework_failure
 
-if ln ${in} dummy_link 2> /dev/null &&
-   ln -s ${in} dummy_slink 2> /dev/null ; then
+touch dummy_file || framework_failure
+if ln dummy_file dummy_link 2> /dev/null &&
+   ln -s dummy_file dummy_slink 2> /dev/null ; then
+	ln_works=yes
 	name_100=name_100_bytes_long_nnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn
 	path_100=dir1/dir2/dir3/path_100_bytes_long_nnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn
 	path_106=dir1/dir2/dir3/path_longer_than_100_bytes_nnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn
 	mkdir dir1 || framework_failure
 	mkdir dir1/dir2 || framework_failure
 	mkdir dir1/dir2/dir3 || framework_failure
-	cat ${in} > dir1/dir2/dir3/in || framework_failure
-	ln dir1/dir2/dir3/in dir1/dir2/dir3/${name_100} || framework_failure
-	ln dir1/dir2/dir3/in ${path_100} || framework_failure
-	ln dir1/dir2/dir3/in ${path_106} || framework_failure
+	cat "${in}" > dir1/dir2/dir3/in || framework_failure
+	ln dir1/dir2/dir3/in dir1/dir2/dir3/"${name_100}" || framework_failure
+	ln dir1/dir2/dir3/in "${path_100}" || framework_failure
+	ln dir1/dir2/dir3/in "${path_106}" || framework_failure
 	ln -s in dir1/dir2/dir3/link || framework_failure
-	ln -s ${name_100} dir1/dir2/dir3/link_100 || framework_failure
+	ln -s "${name_100}" dir1/dir2/dir3/link_100 || framework_failure
 	"${TARLZ}" -0 -cf out.tar dir1 || test_failed $LINENO
 	rm -rf dir1 || framework_failure
 	"${TARLZ}" -xf out.tar || test_failed $LINENO
-	cmp ${in} dir1/dir2/dir3/in || test_failed $LINENO
-	cmp ${in} dir1/dir2/dir3/${name_100} || test_failed $LINENO
-	cmp ${in} ${path_100} || test_failed $LINENO
-	cmp ${in} ${path_106} || test_failed $LINENO
-	cmp ${in} dir1/dir2/dir3/link || test_failed $LINENO
-	cmp ${in} dir1/dir2/dir3/link_100 || test_failed $LINENO
+	cmp "${in}" dir1/dir2/dir3/in || test_failed $LINENO
+	cmp "${in}" dir1/dir2/dir3/"${name_100}" || test_failed $LINENO
+	cmp "${in}" "${path_100}" || test_failed $LINENO
+	cmp "${in}" "${path_106}" || test_failed $LINENO
+	cmp "${in}" dir1/dir2/dir3/link || test_failed $LINENO
+	cmp "${in}" dir1/dir2/dir3/link_100 || test_failed $LINENO
 	rm -f dir1/dir2/dir3/in || framework_failure
-	cmp ${in} dir1/dir2/dir3/link 2> /dev/null && test_failed $LINENO
-	cmp ${in} dir1/dir2/dir3/link_100 || test_failed $LINENO
+	cmp "${in}" dir1/dir2/dir3/link 2> /dev/null && test_failed $LINENO
+	cmp "${in}" dir1/dir2/dir3/link_100 || test_failed $LINENO
 	"${TARLZ}" -xf out.tar || test_failed $LINENO
 	rm -f out.tar || framework_failure
-	cmp ${in} dir1/dir2/dir3/in || test_failed $LINENO
-	cmp ${in} dir1/dir2/dir3/link || test_failed $LINENO
-	"${TARLZ}" -0 -qc ../tmp/dir1 > /dev/null || test_failed $LINENO
+	cmp "${in}" dir1/dir2/dir3/in || test_failed $LINENO
+	cmp "${in}" dir1/dir2/dir3/link || test_failed $LINENO
+	"${TARLZ}" -0 -q -c ../tmp/dir1 > /dev/null || test_failed $LINENO
 	rm -rf dir1 || framework_failure
 else
 	printf "\nwarning: skipping link test: 'ln' does not work on your system."
 fi
-rm -f dummy_link dummy_slink || framework_failure
+rm -f dummy_slink dummy_link dummy_file || framework_failure
+
+printf "\ntesting long names..."
+
+"${TARLZ}" -q -tf "${t155}" || test_failed $LINENO
+"${TARLZ}" -q -tf "${t155_lz}" || test_failed $LINENO
+if [ "${ln_works}" = yes ] ; then
+	mkdir dir1 || framework_failure
+	"${TARLZ}" -C dir1 -xf "${t155}" || test_failed $LINENO
+	mkdir dir2 || framework_failure
+	"${TARLZ}" -C dir2 -xf "${t155_lz}" || test_failed $LINENO
+	diff -r dir1 dir2 || test_failed $LINENO
+	rmdir dir2 2> /dev/null && test_failed $LINENO
+	rmdir dir1 2> /dev/null && test_failed $LINENO
+	rm -rf dir2 dir1 || framework_failure
+fi
+
+"${TARLZ}" -tvf "${testdir}"/ug32chars.tar.lz | grep -q \
+	-e very_long_owner_name_of_32_chars/very_long_group_name_of_32_chars ||
+	test_failed $LINENO
+"${TARLZ}" -tvf "${testdir}"/ug32chars.tar.lz | grep -q \
+	-e very_long_owner_name_of_32_charsvery_long_group_name_of_32_chars &&
+	test_failed $LINENO
+"${TARLZ}" -tvf "${testdir}"/ug32chars.tar.lz | grep -q \
+	-e very_long_group_name_of_32_chars/very_long_group_name_of_32_chars &&
+	test_failed $LINENO
+"${TARLZ}" -xf "${testdir}"/ug32chars.tar.lz || test_failed $LINENO
+cmp cfoo foo || test_failed $LINENO
+rm -f foo || framework_failure
+
+printf "\ntesting bad input..."
 
-"${TARLZ}" -qxf "${testdir}"/dotdot1.tar.lz || test_failed $LINENO
+"${TARLZ}" -q -xf "${testdir}"/dotdot1.tar.lz || test_failed $LINENO
 [ ! -e ../dir ] || test_failed $LINENO
-"${TARLZ}" -qxf "${testdir}"/dotdot2.tar.lz || test_failed $LINENO
+"${TARLZ}" -q -xf "${testdir}"/dotdot2.tar.lz || test_failed $LINENO
 [ ! -e ../dir ] || test_failed $LINENO
-"${TARLZ}" -qxf "${testdir}"/dotdot3.tar.lz || test_failed $LINENO
+"${TARLZ}" -q -xf "${testdir}"/dotdot3.tar.lz || test_failed $LINENO
 [ ! -e dir ] || test_failed $LINENO
-"${TARLZ}" -qxf "${testdir}"/dotdot4.tar.lz || test_failed $LINENO
+"${TARLZ}" -q -xf "${testdir}"/dotdot4.tar.lz || test_failed $LINENO
 [ ! -e dir ] || test_failed $LINENO
-"${TARLZ}" -qxf "${testdir}"/dotdot5.tar.lz || test_failed $LINENO
+"${TARLZ}" -q -xf "${testdir}"/dotdot5.tar.lz || test_failed $LINENO
 [ ! -e dir ] || test_failed $LINENO
 
-printf "\ntesting bad input..."
-
-dd if=${in_tar} of=truncated.tar bs=1000 count=1 2> /dev/null
-"${TARLZ}" -qtf truncated.tar > /dev/null
+dd if="${in_tar}" of=truncated.tar bs=1000 count=1 2> /dev/null
+"${TARLZ}" -q -tf truncated.tar > /dev/null
 [ $? = 2 ] || test_failed $LINENO
-"${TARLZ}" -qxf truncated.tar
+"${TARLZ}" -q -xf truncated.tar
 [ $? = 2 ] || test_failed $LINENO
 [ ! -e test.txt ] || test_failed $LINENO
+rm -f truncated.tar || framework_failure
 
+# test compressed and --keep-damaged
+rm -f test.txt || framework_failure
+for i in "${inbad1}" "${inbad2}" ; do
+	"${TARLZ}" -q -xf "${i}.tar.lz"
+	[ $? = 2 ] || test_failed $LINENO "${i}"
+	[ ! -e test.txt ] || test_failed $LINENO "${i}"
+	rm -f test.txt || framework_failure
+	"${TARLZ}" -q -xf "${i}.tar.lz" --keep-damaged
+	[ $? = 2 ] || test_failed $LINENO "${i}"
+	[ -e test.txt ] || test_failed $LINENO "${i}"
+	cmp "${i}" test.txt 2> /dev/null || lzlib_1_11 "$LINENO ${i}"
+	rm -f test.txt || framework_failure
+done
+#
 rm -f foo bar baz || framework_failure
-"${TARLZ}" -qxf ${bad1_lz}
+"${TARLZ}" -q -xf "${bad1_lz}"
 [ $? = 2 ] || test_failed $LINENO
 [ ! -e foo ] || test_failed $LINENO
-[ -e bar ] || test_failed $LINENO
-[ -e baz ] || test_failed $LINENO
+cmp cbar bar || test_failed $LINENO
+cmp cbaz baz || test_failed $LINENO
 rm -f foo bar baz || framework_failure
-"${TARLZ}" -qxf ${bad2_lz}
+"${TARLZ}" -q -xf "${bad2_lz}"
 [ $? = 2 ] || test_failed $LINENO
 [ ! -e foo ] || test_failed $LINENO
-[ -e bar ] || test_failed $LINENO
-[ -e baz ] || test_failed $LINENO
+cmp cbar bar || test_failed $LINENO
+cmp cbaz baz || test_failed $LINENO
 rm -f foo bar baz || framework_failure
-"${TARLZ}" -qxf ${bad3_lz}
+"${TARLZ}" -q -xf "${bad3_lz}"
 [ $? = 2 ] || test_failed $LINENO
-[ -e foo ] || test_failed $LINENO
+cmp cfoo foo || test_failed $LINENO
 [ ! -e bar ] || test_failed $LINENO
-[ -e baz ] || test_failed $LINENO
+cmp cbaz baz || test_failed $LINENO
+rm -f foo bar baz || framework_failure
+"${TARLZ}" -q -xf "${bad3_lz}" --keep-damaged
+[ $? = 2 ] || test_failed $LINENO
+cmp cfoo foo || test_failed $LINENO
+cmp cbar bar 2> /dev/null || lzlib_1_11 $LINENO
+cmp cbaz baz || test_failed $LINENO
 rm -f foo bar baz || framework_failure
-"${TARLZ}" -qxf ${bad4_lz}
+"${TARLZ}" -q -xf "${bad4_lz}"
 [ $? = 2 ] || test_failed $LINENO
 [ ! -e foo ] || test_failed $LINENO
 [ ! -e bar ] || test_failed $LINENO
-[ -e baz ] || test_failed $LINENO
+cmp cbaz baz || test_failed $LINENO
 rm -f foo bar baz || framework_failure
-"${TARLZ}" -qxf ${bad5_lz}
+"${TARLZ}" -q -xf "${bad4_lz}" --keep-damaged
+[ $? = 2 ] || test_failed $LINENO
+[ ! -e foo ] || test_failed $LINENO
+cmp cbar bar 2> /dev/null || lzlib_1_11 $LINENO
+cmp cbaz baz || test_failed $LINENO
+rm -f foo bar baz || framework_failure
+"${TARLZ}" -q -xf "${bad5_lz}"
 [ $? = 2 ] || test_failed $LINENO
 [ ! -e foo ] || test_failed $LINENO
 [ ! -e bar ] || test_failed $LINENO
-[ -e baz ] || test_failed $LINENO
+cmp cbaz baz || test_failed $LINENO
 rm -f foo bar baz || framework_failure
-"${TARLZ}" -qxf ${bad6_lz}
+"${TARLZ}" -q -xf "${bad5_lz}" --keep-damaged
 [ $? = 2 ] || test_failed $LINENO
-[ -e foo ] || test_failed $LINENO
-[ -e bar ] || test_failed $LINENO
-[ -e baz ] || test_failed $LINENO
+cmp cfoo foo 2> /dev/null || lzlib_1_11 $LINENO
+[ ! -e bar ] || test_failed $LINENO
+cmp cbaz baz || test_failed $LINENO
+rm -f foo bar baz || framework_failure
+"${TARLZ}" -q -xf "${bad6_lz}"
+[ $? = 2 ] || test_failed $LINENO
+cmp cfoo foo || test_failed $LINENO
+cmp cbar bar || test_failed $LINENO
+cmp cbaz baz || test_failed $LINENO
 
+# test uncompressed and --keep-damaged
+rm -f test.txt || framework_failure
+"${TARLZ}" -q -xf "${inbad1}.tar"
+[ $? = 2 ] || test_failed $LINENO
+[ ! -e test.txt ] || test_failed $LINENO
+rm -f test.txt || framework_failure
+"${TARLZ}" -q -xf "${inbad1}.tar" --keep-damaged
+[ $? = 2 ] || test_failed $LINENO
+[ -e test.txt ] || test_failed $LINENO
+cmp "${inbad1}" test.txt 2> /dev/null || test_failed $LINENO
+rm -f test.txt || framework_failure
+#
 rm -f foo bar baz || framework_failure
-"${TARLZ}" -qxf ${bad1}
+"${TARLZ}" -q -xf "${bad1}"
 [ $? = 2 ] || test_failed $LINENO
 [ ! -e foo ] || test_failed $LINENO
-[ -e bar ] || test_failed $LINENO
-[ -e baz ] || test_failed $LINENO
+cmp cbar bar || test_failed $LINENO
+cmp cbaz baz || test_failed $LINENO
 rm -f foo bar baz || framework_failure
-"${TARLZ}" -qxf ${bad2}
+"${TARLZ}" -q -xf "${bad2}"
 [ $? = 2 ] || test_failed $LINENO
-[ -e foo ] || test_failed $LINENO
+cmp cfoo foo || test_failed $LINENO
 [ ! -e bar ] || test_failed $LINENO
-[ -e baz ] || test_failed $LINENO
+cmp cbaz baz || test_failed $LINENO
 rm -f foo bar baz || framework_failure
-"${TARLZ}" -qxf ${bad3}
+"${TARLZ}" -q -xf "${bad3}"
 [ $? = 2 ] || test_failed $LINENO
-[ -e foo ] || test_failed $LINENO
-[ -e bar ] || test_failed $LINENO
+cmp cfoo foo || test_failed $LINENO
+cmp cbar bar || test_failed $LINENO
 [ ! -e baz ] || test_failed $LINENO
 rm -f foo bar baz || framework_failure
-"${TARLZ}" -qxf ${bad4}
+"${TARLZ}" -q -xf "${bad4}"
 [ $? = 2 ] || test_failed $LINENO
-[ -e foo ] || test_failed $LINENO
+cmp cfoo foo || test_failed $LINENO
 [ ! -e bar ] || test_failed $LINENO
 [ ! -e baz ] || test_failed $LINENO
 rm -f foo bar baz || framework_failure
-"${TARLZ}" -qxf ${bad5}
+"${TARLZ}" -q -xf "${bad5}"
 [ $? = 2 ] || test_failed $LINENO
-[ -e foo ] || test_failed $LINENO
-[ -e bar ] || test_failed $LINENO
-[ -e baz ] || test_failed $LINENO
-rm -f foo bar baz || framework_failure
+cmp cfoo foo || test_failed $LINENO
+cmp cbar bar || test_failed $LINENO
+cmp cbaz baz || test_failed $LINENO
+rm -f cfoo cbar cbaz foo bar baz || framework_failure
+#
+rm -f test3.tar.lz || framework_failure
+"${TARLZ}" -q -xf "${tlzit1}"
+[ $? = 2 ] || test_failed $LINENO
+[ ! -e foo ] || test_failed $LINENO
+[ ! -e bar ] || test_failed $LINENO
+[ ! -e baz ] || test_failed $LINENO
+[ ! -e test3.tar.lz ] || test_failed $LINENO
+rm -f foo bar baz test3.tar.lz || framework_failure
+"${TARLZ}" -q -xf "${tlzit2}"
+[ $? = 2 ] || test_failed $LINENO
+[ ! -e foo ] || test_failed $LINENO
+[ ! -e bar ] || test_failed $LINENO
+[ ! -e baz ] || test_failed $LINENO
+cmp "${test3_lz}" test3.tar.lz || test_failed $LINENO
+rm -f foo bar baz test3.tar.lz || framework_failure
 
 echo
 if [ ${fail} = 0 ] ; then
diff --git a/testsuite/t155.tar b/testsuite/t155.tar
new file mode 100644
index 0000000..4a0f37b
--- /dev/null
+++ b/testsuite/t155.tar
diff --git a/testsuite/t155.tar.lz b/testsuite/t155.tar.lz
new file mode 100644
index 0000000..3219071
--- /dev/null
+++ b/testsuite/t155.tar.lz
diff --git a/testsuite/test3_bad3.tar.lz b/testsuite/test3_bad3.tar.lz
index c711a1a..3b46163 100644
--- a/testsuite/test3_bad3.tar.lz
+++ b/testsuite/test3_bad3.tar.lz
diff --git a/testsuite/test3_bad4.tar.lz b/testsuite/test3_bad4.tar.lz
index 226db72..7ac6d98 100644
--- a/testsuite/test3_bad4.tar.lz
+++ b/testsuite/test3_bad4.tar.lz
diff --git a/testsuite/test3a.tar.lz b/testsuite/test3_dir.tar.lz
index 8eb3f43..8eb3f43 100644
--- a/testsuite/test3a.tar.lz
+++ b/testsuite/test3_dir.tar.lz
diff --git a/testsuite/test3_dot.tar.lz b/testsuite/test3_dot.tar.lz
new file mode 100644
index 0000000..3ff8960
--- /dev/null
+++ b/testsuite/test3_dot.tar.lz
diff --git a/testsuite/test_bad1.txt b/testsuite/test_bad1.txt
new file mode 100644
index 0000000..f8463f4
--- /dev/null
+++ b/testsuite/test_bad1.txt
@@ -0,0 +1,307 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
+  The licenses for most software are designed to take away your
+freedom to share and change it.  By contrast, the GNU General Public
+License is intended to guarantee your freedom to share and change free
+software--to make sure the software is free for all its users.  This
+General Public License applies to most of the Free Software
+Foundation's software and to any other program whose authors commit to
+using it.  (Some other Free Software Foundation software is covered by
+the GNU Lesser General Public License instead.)  You can apply it to
+your programs, too.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+this service if you wish), that you receive source code or can get it
+if you want it, that you can change the software or use pieces of it
+in new free programs; and that you know you can do these things.
+
+  To protect your rights, we need to make restrictions that forbid
+anyone to deny you these rights or to ask you to surrender the rights.
+These restrictions translate to certain responsibilities for you if you
+distribute copies of the software, or if you modify it.
+
+  For example, if you distribute copies of such a program, whether
+gratis or for a fee, you must give the recipients all the rights that
+you have.  You must make sure that they, too, receive or can get the
+source code.  And you must show them these terms so they know their
+rights.
+
+  We protect your rights with two steps: (1) copyright the software, and
+(2) offer you this license which gives you legal permission to copy,
+distribute and/or modify the software.
+
+  Also, for each author's protection and ours, we want to make certain
+that everyone understands that there is no warranty for this free
+software.  If the software is modified by someone else and passed on, we
+want its recipients to know that what they have is not the original, so
+that any problems introduced by others will not reflect on the original
+authors' reputations.
+
+  Finally, any free program is threatened constantly by software
+patents.  We wish to avoid the danger that redistributors of a free
+program will individually obtain patent licenses, in effect making the
+program proprietary.  To prevent this, we have made it clear that any
+patent must be licensed for everyone's free use or not licensed at all.
+
+  The precise terms and conditions for copying, distribution and
+modification follow.
+
+                    GNU GENERAL PUBLIC LICENSE
+   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+  0. This License applies to any program or other work which contains
+a notice placed by the copyright holder saying it may be distributed
+under the terms of this General Public License.  The "Program", below,
+refers to any such program or work, and a "work based on the Program"
+means either the Program or any derivative work under copyright law:
+that is to say, a work containing the Program or a portion of it,
+either verbatim or with modifications and/or translated into another
+language.  (Hereinafter, translation is included without limitation in
+the term "modification".)  Each licensee is addressed as "you".
+
+Activities other than copying, distribution and modification are not
+covered by this License; they are outside its scope.  The act of
+running the Program is not restricted, and the output from the Program
+is covered only if its contents constitute a work based on the
+Program (independent of having been made by running the Program).
+Whether that is true depends on what the Program does.
+
+  1. You may copy and distribute verbatim copies of the Program's
+source code as you receive it, in any medium, provided that you
+conspicuously and appropriately publish on each copy an appropriate
+copyright notice and disclaimer of warranty; keep intact all the
+notices that refer to this License and to the absence of any warranty;
+and give any other recipients of the Program a copy of this License
+along with the Program.
+
+You may charge a fee for the physical act of transferring a copy, and
+you may at your option offer warranty protection in exchange for a fee.
+
+  2. You may modify your copy or copies of the Program or any portion
+of it, thus forming a work based on the Program, and copy and
+distribute such modifications or work under the terms of Section 1
+above, provided that you also meet all of these conditions:
+
+    a) You must cause the modified files to carry prominent notices
+    stating that you changed the files and the date of any change.
+
+    b) You must cause any work that you distribute or publish, that in
+    whole or in part contains or is derived from the Program or any
+    part thereof, to be licensed as a whole at no charge to all third
+    parties under the terms of this License.
+
+    c) If the modified program normally reads commands interactively
+    when run, you must cause it, when started running for such
+    interactive use in the most ordinary way, to print or display an
+    announcement including an appropriate copyright notice and a
+    notice that there is no warranty (or else, saying that you provide
+    a warranty) and that users may redistribute the program under
+    these conditions, and telling the user how to view a copy of this
+    License.  (Exception: if the Program itself is interactive but
+    does not normally print such an announcement, your work based on
+    the Program is not required to print an announcement.)
+
+These requirements apply to the modified work as a whole.  If
+identifiable sections of that work are not derived from the Program,
+and can be reasonably considered independent and separate works in
+themselves, then this License, and its terms, do not apply to those
+sections when you distribute them as separate works.  But when you
+distribute the same sections as part of a whole which is a work based
+on the Program, the distribution of the whole must be on the terms of
+this License, whose permissions for other licensees extend to the
+entire whole, and thus to each and every part regardless of who wrote it.
+
+Thus, it is not the intent of this section to claim rights or contest
+your rights to work written entirely by you; rather, the intent is to
+exercise the right to control the distribution of derivative or
+collective works based on the Program.
+
+In addition, mere aggregation of another work not based on the Program
+with the Program (or with a work based on the Program) on a volume of
+a storage or distribution medium does not bring the other work under
+the scope of this License.
+
+  3. You may copy and distribute the Program (or a work based on it,
+under Section 2) in object code or executable form under the terms of
+Sections 1 and 2 above provided that you also do one of the following:
+
+    a) Accompany it with the complete corresponding machine-readable
+    source code, which must be distributed under the terms of Sections
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+
+    b) Accompany it with a written offer, valid for at least three
+    years, to give any third party, for a charge no more than your
+    cost of physically performing source distribution, a complete
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+    distributed under the terms of Sections 1 and 2 above on a medium
+    customarily used for software interchange; or,
+
+    c) Accompany it with the information you received as to the offer
+    to distribute corresponding source code.  (This alternative is
+    allowed only for noncommercial distribution and only if you
+    received the program in object code or executable form with such
+    an offer, in accord with Subsection b above.)
+
+The source code for a work means the preferred form of the work for
+making modifications to it.  For an executable work, complete source
+code means all the source code for all modules it contains, plus any
+associated interface definition files, plus the scripts used to
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+special exception, the source code distributed need not include
+anything that is normally distributed (in either source or binary
+form) with the major components (compiler, kernel, and so on) of the
+operating system on which the executable runs, unless that component
+itself accompanies the executable.
+
+If distribution of executable or object code is made by offering
+access to copy from a designated place, then offering equivalent
+access to copy the source code from the same place counts as
+distribution of the source code, even though third parties are not
+compelled to copy the source along with the object code.
+
+  4. You may not copy, modify, sublicense, or distribute the Program
+except as expressly provided under this License.  Any attempt
+otherwise to copy, modify, sublicense or distribute the Program is
+void, and will automatically terminate your rights under this License.
+However, parties who have received copies, or rights, from you under
+this License will not have their licenses terminated so long as such
+parties remain in full compliance.
+
+  5. You are not required to accept this License, since you have not
+signed it.  However, nothing else grants you permission to modify or
+distribute the Program or its derivative works.  These actions are
+prohibited by law if you do not accept this License.  Therefore, by
+modifying or distributing the Program (or any work based on the
+Program), you indicate your acceptance of this License to do so, and
+all its terms and conditions for copying, distributing or modifying
+the Program or works based on it.
+
+  6. Each time you redistribute the Program (or any work based on the
+Program), the recipient automatically receives a license from the
+original licensor to copy, distribute or modify the Program subject to
+these terms and conditions.  You may not impose any further
+restrictions on the recipients' exercise of the rights granted herein.
+You are not responsible for enforcing compliance by third parties to
+this License.
+
+  7. If, as a consequence of a court judgment or allegation of patent
+infringement or for any other reason (not limited to patent issues),
+conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License.  If you cannot
+distribute so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you
+may not distribute the Program at all.  For example, if a patent
+license would not permit royalty-free redistribution of the Program by
+all those who receive copies directly or indirectly through you, then
+the only way you could satisfy both it and this License would be to
+refrain entirely from distribution of the Program.
+
+If any portion of this section is held invalid or unenforceable under
+any particular circumstance, the balance of the section is intended to
+apply and the section as a whole is intended to apply in other
+circumstances.
+
+It is not the purpose of this section to induce you to infringe any
+patents or other property right claims or to contest validity of any
+such claims; this section has the sole purpose of protecting the
+integrity of the free software distribution system, which is
+implemented by public license practices.  Many people have made
+generous contributions to the wide range of software distributed
+through that system in reliance on consistent application of that
+system; it is up to the author/donor to decide if he or she is willing
+to distribute software through any other system and a licensee cannot
+impose that choice.
+
+This section is intended to make thoroughly clear what is believed to
+be a consequence of the rest of this License.
+
+  8. If the distribution and/or use of the Program is restricted in
+certain countries either by patents or by copyrighted interfaces, the
+original copyright holder who places the Program under this License
+may add an explicit geographical distribution limitation excluding
+those countries, so that distribution is permitted only in or among
+countries not thus excluded.  In such case, this License incorporates
+the limitation as if written in the body of this License.
+
+  9. The Free Software Foundation may publish revised and/or new versions
+of the General Public License from time to time.  Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+Each version is given a distinguishing version number.  If the Program
+specifies a version number of this License which applies to it and "any
+later version", you have the option of following the terms and conditions
+either of that version or of any later version published by the Free
+Software Foundation.  If the Program does not specify a version number of
+this License, you may choose any version ever published by the Free Software
+Foundation.
+
+  10. If you wish to incorporate parts of the Program into other free
+programs whose distribution conditions are different, write to the author
+to ask for permission.  For software which is copyrighted by the Free
+Software Foundation, write to the Free Software Foundation; we sometimes
+make exceptions for this.  Our decision will be guided by the two goals
+of preserving the free status of all derivatives of our free software and
+of promoting the sharing and reuse of software generally.
+
+                            NO WARRANTY
+
+  11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
+FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
+OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
+PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
+OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE RISK AS
+TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE
+PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
+REPAIR OR CORRECTION.
+
+  12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
+REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
+INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
+OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
+TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
+YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
+PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGES.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+convey the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program
+\ No newline at end of file
diff --git a/testsuite/test_bad1.txt.tar b/testsuite/test_bad1.txt.tar
new file mode 100644
index 0000000..dc2140e
--- /dev/null
+++ b/testsuite/test_bad1.txt.tar
diff --git a/testsuite/test_bad1.txt.tar.lz b/testsuite/test_bad1.txt.tar.lz
new file mode 100644
index 0000000..f14173d
--- /dev/null
+++ b/testsuite/test_bad1.txt.tar.lz
diff --git a/testsuite/test_bad2.txt b/testsuite/test_bad2.txt
new file mode 100644
index 0000000..452408f
--- /dev/null
+++ b/testsuite/test_bad2.txt
@@ -0,0 +1,320 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
+  The licenses for most software are designed to take away your
+freedom to share and change it.  By contrast, the GNU General Public
+License is intended to guarantee your freedom to share and change free
+software--to make sure the software is free for all its users.  This
+General Public License applies to most of the Free Software
+Foundation's software and to any other program whose authors commit to
+using it.  (Some other Free Software Foundation software is covered by
+the GNU Lesser General Public License instead.)  You can apply it to
+your programs, too.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+this service if you wish), that you receive source code or can get it
+if you want it, that you can change the software or use pieces of it
+in new free programs; and that you know you can do these things.
+
+  To protect your rights, we need to make restrictions that forbid
+anyone to deny you these rights or to ask you to surrender the rights.
+These restrictions translate to certain responsibilities for you if you
+distribute copies of the software, or if you modify it.
+
+  For example, if you distribute copies of such a program, whether
+gratis or for a fee, you must give the recipients all the rights that
+you have.  You must make sure that they, too, receive or can get the
+source code.  And you must show them these terms so they know their
+rights.
+
+  We protect your rights with two steps: (1) copyright the software, and
+(2) offer you this license which gives you legal permission to copy,
+distribute and/or modify the software.
+
+  Also, for each author's protection and ours, we want to make certain
+that everyone understands that there is no warranty for this free
+software.  If the software is modified by someone else and passed on, we
+want its recipients to know that what they have is not the original, so
+that any problems introduced by others will not reflect on the original
+authors' reputations.
+
+  Finally, any free program is threatened constantly by software
+patents.  We wish to avoid the danger that redistributors of a free
+program will individually obtain patent licenses, in effect making the
+program proprietary.  To prevent this, we have made it clear that any
+patent must be licensed for everyone's free use or not licensed at all.
+
+  The precise terms and conditions for copying, distribution and
+modification follow.
+
+                    GNU GENERAL PUBLIC LICENSE
+   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+  0. This License applies to any program or other work which contains
+a notice placed by the copyright holder saying it may be distributed
+under the terms of this General Public License.  The "Program", below,
+refers to any such program or work, and a "work based on the Program"
+means either the Program or any derivative work under copyright law:
+that is to say, a work containing the Program or a portion of it,
+either verbatim or with modifications and/or translated into another
+language.  (Hereinafter, translation is included without limitation in
+the term "modification".)  Each licensee is addressed as "you".
+
+Activities other than copying, distribution and modification are not
+covered by this License; they are outside its scope.  The act of
+running the Program is not restricted, and the output from the Program
+is covered only if its contents constitute a work based on the
+Program (independent of having been made by running the Program).
+Whether that is true depends on what the Program does.
+
+  1. You may copy and distribute verbatim copies of the Program's
+source code as you receive it, in any medium, provided that you
+conspicuously and appropriately publish on each copy an appropriate
+copyright notice and disclaimer of warranty; keep intact all the
+notices that refer to this License and to the absence of any warranty;
+and give any other recipients of the Program a copy of this License
+along with the Program.
+
+You may charge a fee for the physical act of transferring a copy, and
+you may at your option offer warranty protection in exchange for a fee.
+
+  2. You may modify your copy or copies of the Program or any portion
+of it, thus forming a work based on the Program, and copy and
+distribute such modifications or work under the terms of Section 1
+above, provided that you also meet all of these conditions:
+
+    a) You must cause the modified files to carry prominent notices
+    stating that you changed the files and the date of any change.
+
+    b) You must cause any work that you distribute or publish, that in
+    whole or in part contains or is derived from the Program or any
+    part thereof, to be licensed as a whole at no charge to all third
+    parties under the terms of this License.
+
+    c) If the modified program normally reads commands interactively
+    when run, you must cause it, when started running for such
+    interactive use in the most ordinary way, to print or display an
+    announcement including an appropriate copyright notice and a
+    notice that there is no warranty (or else, saying that you provide
+    a warranty) and that users may redistribute the program under
+    these conditions, and telling the user how to view a copy of this
+    License.  (Exception: if the Program itself is interactive but
+    does not normally print such an announcement, your work based on
+    the Program is not required to print an announcement.)
+
+These requirements apply to the modified work as a whole.  If
+identifiable sections of that work are not derived from the Program,
+and can be reasonably considered independent and separate works in
+themselves, then this License, and its terms, do not apply to those
+sections when you distribute them as separate works.  But when you
+distribute the same sections as part of a whole which is a work based
+on the Program, the distribution of the whole must be on the terms of
+this License, whose permissions for other licensees extend to the
+entire whole, and thus to each and every part regardless of who wrote it.
+
+Thus, it is not the intent of this section to claim rights or contest
+your rights to work written entirely by you; rather, the intent is to
+exercise the right to control the distribution of derivative or
+collective works based on the Program.
+
+In addition, mere aggregation of another work not based on the Program
+with the Program (or with a work based on the Program) on a volume of
+a storage or distribution medium does not bring the other work under
+the scope of this License.
+
+  3. You may copy and distribute the Program (or a work based on it,
+under Section 2) in object code or executable form under the terms of
+Sections 1 and 2 above provided that you also do one of the following:
+
+    a) Accompany it with the complete corresponding machine-readable
+    source code, which must be distributed under the terms of Sections
+    1 and 2 above on a medium customarily used for software interchange; or,
+
+    b) Accompany it with a written offer, valid for at least three
+    years, to give any third party, for a charge no more than your
+    cost of physically performing source distribution, a complete
+    machine-readable copy of the corresponding source code, to be
+    distributed under the terms of Sections 1 and 2 above on a medium
+    customarily used for software interchange; or,
+
+    c) Accompany it with the information you received as to the offer
+    to distribute corresponding source code.  (This alternative is
+    allowed only for noncommercial distribution and only if you
+    received the program in object code or executable form with such
+    an offer, in accord with Subsection b above.)
+
+The source code for a work means the preferred form of the work for
+making modifications to it.  For an executable work, complete source
+code means all the source code for all modules it contains, plus any
+associated interface definition files, plus the scripts used to
+control compilation and installation of the executable.  However, as a
+special exception, the source code distributed need not include
+anything that is normally distributed (in either source or binary
+form) with the major components (compiler, kernel, and so on) of the
+operating system on which the executable runs, unless that component
+itself accompanies the executable.
+
+If distribution of executable or object code is made by offering
+access to copy from a designated place, then offering equivalent
+access to copy the source code from the same place counts as
+distribution of the source code, even though third parties are not
+compelled to copy the source along with the object code.
+
+  4. You may not copy, modify, sublicense, or distribute the Program
+except as expressly provided under this License.  Any attempt
+otherwise to copy, modify, sublicense or distribute the Program is
+void, and will automatically terminate your rights under this License.
+However, parties who have received copies, or rights, from you under
+this License will not have their licenses terminated so long as such
+parties remain in full compliance.
+
+  5. You are not required to accept this License, since you have not
+signed it.  However, nothing else grants you permission to modify or
+distribute the Program or its derivative works.  These actions are
+prohibited by law if you do not accept this License.  Therefore, by
+modifying or distributing the Program (or any work based on the
+Program), you indicate your acceptance of this License to do so, and
+all its terms and conditions for copying, distributing or modifying
+the Program or works based on it.
+
+  6. Each time you redistribute the Program (or any work based on the
+Program), the recipient automatically receives a license from the
+original licensor to copy, distribute or modify the Program subject to
+these terms and conditions.  You may not impose any further
+restrictions on the recipients' exercise of the rights granted herein.
+You are not responsible for enforcing compliance by third parties to
+this License.
+
+  7. If, as a consequence of a court judgment or allegation of patent
+infringement or for any other reason (not limited to patent issues),
+conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License.  If you cannot
+distribute so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you
+may not distribute the Program at all.  For example, if a patent
+license would not permit royalty-free redistribution of the Program by
+all those who receive copies directly or indirectly through you, then
+the only way you could satisfy both it and this License would be to
+refrain entirely from distribution of the Program.
+
+If any portion of this section is held invalid or unenforceable under
+any particular circumstance, the balance of the section is intended to
+apply and the section as a whole is intended to apply in other
+circumstances.
+
+It is not the purpose of this section to induce you to infringe any
+patents or other property right claims or to contest validity of any
+such claims; this section has the sole purpose of protecting the
+integrity of the free software distribution system, which is
+implemented by public license practices.  Many people have made
+generous contributions to the wide range of software distributed
+through that system in reliance on consistent application of that
+system; it is up to the author/donor to decide if he or she is willing
+to distribute software through any other system and a licensee cannot
+impose that choice.
+
+This section is intended to make thoroughly clear what is believed to
+be a consequence of the rest of this License.
+
+  8. If the distribution and/or use of the Program is restricted in
+certain countries either by patents or by copyrighted interfaces, the
+original copyright holder who places the Program under this License
+may add an explicit geographical distribution limitation excluding
+those countries, so that distribution is permitted only in or among
+countries not thus excluded.  In such case, this License incorporates
+the limitation as if written in the body of this License.
+
+  9. The Free Software Foundation may publish revised and/or new versions
+of the General Public License from time to time.  Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+Each version is given a distinguishing version number.  If the Program
+specifies a version number of this License which applies to it and "any
+later version", you have the option of following the terms and conditions
+either of that version or of any later version published by the Free
+Software Foundation.  If the Program does not specify a version number of
+this License, you may choose any version ever published by the Free Software
+Foundation.
+
+  10. If you wish to incorporate parts of the Program into other free
+programs whose distribution conditions are different, write to the author
+to ask for permission.  For software which is copyrighted by the Free
+Software Foundation, write to the Free Software Foundation; we sometimes
+make exceptions for this.  Our decision will be guided by the two goals
+of preserving the free status of all derivatives of our free software and
+of promoting the sharing and reuse of software generally.
+
+                            NO WARRANTY
+
+  11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
+FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
+OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
+PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
+OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE RISK AS
+TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE
+PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
+REPAIR OR CORRECTION.
+
+  12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
+REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
+INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
+OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
+TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
+YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
+PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGES.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+convey the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  Ifodifnperived from the Progr"work based on therogrdifneneraeuse of software generally.
+
+                            NO WARRANTY
+
+  11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
+FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT X FR TO      NO WARRANTY
+
+  11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
+FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT X FR TO      NO WARRANTY
+
+  11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARQIS NO WARRATHERE IS NO WARRANTY
+FOR THE 
+
+    This ee
+\ No newline at end of file
diff --git a/testsuite/test_bad2.txt.tar.lz b/testsuite/test_bad2.txt.tar.lz
new file mode 100644
index 0000000..5d30ebf
--- /dev/null
+++ b/testsuite/test_bad2.txt.tar.lz
diff --git a/testsuite/tlz_in_tar1.tar b/testsuite/tlz_in_tar1.tar
new file mode 100644
index 0000000..f2dfd6c
--- /dev/null
+++ b/testsuite/tlz_in_tar1.tar
diff --git a/testsuite/tlz_in_tar2.tar b/testsuite/tlz_in_tar2.tar
new file mode 100644
index 0000000..be860c6
--- /dev/null
+++ b/testsuite/tlz_in_tar2.tar
diff --git a/testsuite/ug32chars.tar.lz b/testsuite/ug32chars.tar.lz
new file mode 100644
index 0000000..1397b23
--- /dev/null
+++ b/testsuite/ug32chars.tar.lz