18 files changed, 448 insertions, 43 deletions
diff --git a/testsuite/check.sh b/testsuite/check.sh
index a902d93..e78b7f7 100755
--- a/testsuite/check.sh
+++ b/testsuite/check.sh
@@ -1,9 +1,9 @@
 #! /bin/sh
 # check script for Lziprecover - Data recovery tool for the lzip format
-# Copyright (C) 2009-2019 Antonio Diaz Diaz.
+# Copyright (C) 2009-2021 Antonio Diaz Diaz.
 #
 # This script is free software: you have unlimited permission
-# to copy, distribute and modify it.
+# to copy, distribute, and modify it.
 
 LC_ALL=C
 export LC_ALL
@@ -32,6 +32,7 @@ cd "${objdir}"/tmp || framework_failure
 cat "${testdir}"/test.txt > in || framework_failure
 in_lz="${testdir}"/test.txt.lz
 in_lzma="${testdir}"/test.txt.lzma
+in_em="${testdir}"/test_em.txt.lz
 inD="${testdir}"/test21723.txt
 bad1_lz="${testdir}"/test_bad1.lz
 bad2_lz="${testdir}"/test_bad2.lz
@@ -60,11 +61,15 @@ test_failed() { fail=1 ; printf " $1" ; [ -z "$2" ] || printf "($2)" ; }
 
 # Description of test files for lziprecover:
 # single-member files with one or more errors
-# test_bad1.lz: byte at offset 66 changed from 0xA6 to 0x46
+# test_bad1.lz: byte at offset 66 changed from 0xA6 to 0x26
 # test_bad2.lz: [  34-  65] --> copy of bytes [  68-  99]
 # test_bad3.lz: [ 512-1535] --> zeroed          [2560-3583] --> zeroed
 # test_bad4.lz: [3072-4095] --> random errors   [4608-5631] --> zeroed
 # test_bad5.lz: [1024-2047] --> random errors   [5120-6143] --> random data
+# test_bad6.lz: [ 512-1023] --> zeroed   (reference test.txt [  891- 2137])
+# test_bad7.lz: [6656-7167] --> zeroed   (reference test.txt [20428-32231])
+# test_bad8.lz: [  66-  73] --> zeroed   (reference test.txt [   89-  110])
+# test_bad9.lz: [6491-6498] --> zeroed   (reference test.txt [17977-18120])
 #
 # 6-member files with one or more errors
 # fox6_bad1.lz: byte at offset   5 changed from 0x0C to 0x00 (DS)
@@ -108,6 +113,11 @@ printf "testing lziprecover-%s..." "$2"
 [ $? = 2 ] || test_failed $LINENO
 "${LZIP}" -dq -o in < "${in_lz}"
 [ $? = 1 ] || test_failed $LINENO
+"${LZIP}" -dq -o in "${in_lz}"
+[ $? = 1 ] || test_failed $LINENO
+"${LZIP}" -dq -o out nx_file.lz
+[ $? = 1 ] || test_failed $LINENO
+[ ! -e out ] || test_failed $LINENO
 # these are for code coverage
 "${LZIP}" -lt "${in_lz}" 2> /dev/null
 [ $? = 1 ] || test_failed $LINENO
@@ -115,7 +125,9 @@ printf "testing lziprecover-%s..." "$2"
 [ $? = 1 ] || test_failed $LINENO
 "${LZIP}" -cdt "${in_lz}" > out 2> /dev/null
 [ $? = 1 ] || test_failed $LINENO
-"${LZIP}" -t -- nx_file 2> /dev/null
+"${LZIP}" -t -- nx_file.lz 2> /dev/null
+[ $? = 1 ] || test_failed $LINENO
+"${LZIP}" -t "" < /dev/null 2> /dev/null
 [ $? = 1 ] || test_failed $LINENO
 "${LZIP}" --help > /dev/null || test_failed $LINENO
 "${LZIP}" -n1 -V > /dev/null || test_failed $LINENO
@@ -136,6 +148,9 @@ printf "testing lziprecover-%s..." "$2"
 printf "LZIP\001-.............................." | "${LZIP}" -t 2> /dev/null
 printf "LZIP\002-.............................." | "${LZIP}" -t 2> /dev/null
 printf "LZIP\001+.............................." | "${LZIP}" -t 2> /dev/null
+
+"${LZIPRECOVER}" -eq "${testdir}"/test_bad6.lz
+[ $? = 1 ] || test_failed $LINENO
 "${LZIPRECOVER}" -mq "${bad1_lz}"
 [ $? = 1 ] || test_failed $LINENO
 "${LZIPRECOVER}" -Rq
@@ -201,8 +216,14 @@ printf "LZIP\001+.............................." | "${LZIP}" -t 2> /dev/null
 [ $? = 1 ] || test_failed $LINENO
 "${LZIPRECOVER}" -Akq "${in_lzma}"
 [ $? = 1 ] || test_failed $LINENO
+rm -f copy.lz || framework_failure
+"${LZIPRECOVER}" -A "${in_lzma}" -o copy.lz || test_failed $LINENO
+cmp "${in_lz}" copy.lz || test_failed $LINENO
 "${LZIPRECOVER}" -Ac "${in_lzma}" > copy.lz || test_failed $LINENO
 cmp "${in_lz}" copy.lz || test_failed $LINENO
+rm -f copy.lz || framework_failure
+"${LZIPRECOVER}" -A -o copy.lz < "${in_lzma}" || test_failed $LINENO
+cmp "${in_lz}" copy.lz || test_failed $LINENO
 "${LZIPRECOVER}" -A < "${in_lzma}" > copy.lz || test_failed $LINENO
 cmp "${in_lz}" copy.lz || test_failed $LINENO
 rm -f copy.lz || framework_failure
@@ -220,21 +241,35 @@ printf "to be overwritten" > copy.tar.lz || framework_failure
 "${LZIPRECOVER}" -Af copy.tlz || test_failed $LINENO
 cmp "${in_lz}" copy.tar.lz || test_failed $LINENO
 rm -f copy.tar.lz || framework_failure
-cat "${in_lzma}" > anyothername || framework_failure
-"${LZIPRECOVER}" -A -o copy - anyothername - < "${in_lzma}" ||
+cat in in > in2 || framework_failure
+"${LZIPRECOVER}" -A -o out2.lz - "${in_lzma}" - < "${in_lzma}" ||
 	test_failed $LINENO
-cmp "${in_lz}" copy.lz || test_failed $LINENO
-cmp "${in_lz}" anyothername.lz || test_failed $LINENO
-rm -f copy.lz anyothername.lz || framework_failure
+"${LZIP}" -cd out2.lz > copy2 || test_failed $LINENO
+cmp in2 copy2 || test_failed $LINENO
+rm -f out2.lz copy2 || framework_failure
 
 printf "\ntesting decompression..."
 
-"${LZIP}" -lq "${in_lz}" || test_failed $LINENO
-"${LZIP}" -t "${in_lz}" || test_failed $LINENO
-"${LZIP}" -cd "${in_lz}" > copy || test_failed $LINENO
-cmp in copy || test_failed $LINENO
+for i in "${in_lz}" "${in_em}" ; do
+	"${LZIP}" -lq "$i" || test_failed $LINENO "$i"
+	"${LZIP}" -t "$i" || test_failed $LINENO "$i"
+	"${LZIP}" -d "$i" -o copy || test_failed $LINENO "$i"
+	cmp in copy || test_failed $LINENO "$i"
+	"${LZIP}" -cd "$i" > copy || test_failed $LINENO "$i"
+	cmp in copy || test_failed $LINENO "$i"
+	"${LZIP}" -d "$i" -o - > copy || test_failed $LINENO "$i"
+	cmp in copy || test_failed $LINENO "$i"
+	"${LZIP}" -d < "$i" > copy || test_failed $LINENO "$i"
+	cmp in copy || test_failed $LINENO "$i"
+	rm -f copy || framework_failure
+done
+
+lines=$("${LZIP}" -tvv "${in_em}" 2>&1 | wc -l) || test_failed $LINENO
+[ "${lines}" -eq 8 ] || test_failed $LINENO "${lines}"
+
+lines=$("${LZIP}" -lvv "${in_em}" | wc -l) || test_failed $LINENO
+[ "${lines}" -eq 11 ] || test_failed $LINENO "${lines}"
 
-rm -f copy || framework_failure
 cat "${in_lz}" > copy.lz || framework_failure
 "${LZIP}" -dk copy.lz || test_failed $LINENO
 cmp in copy || test_failed $LINENO
@@ -248,10 +283,16 @@ cmp in copy || test_failed $LINENO
 printf "to be overwritten" > copy || framework_failure
 "${LZIP}" -df -o copy < "${in_lz}" || test_failed $LINENO
 cmp in copy || test_failed $LINENO
+rm -f out copy || framework_failure
+"${LZIP}" -d -o ./- "${in_lz}" || test_failed $LINENO
+cmp in ./- || test_failed $LINENO
+rm -f ./- || framework_failure
+"${LZIP}" -d -o ./- < "${in_lz}" || test_failed $LINENO
+cmp in ./- || test_failed $LINENO
+rm -f ./- || framework_failure
 
-rm -f copy || framework_failure
 cat "${in_lz}" > anyothername || framework_failure
-"${LZIP}" -dv --output copy - anyothername - < "${in_lz}" 2> /dev/null ||
+"${LZIP}" -dv - anyothername - < "${in_lz}" > copy 2> /dev/null ||
 	test_failed $LINENO
 cmp in copy || test_failed $LINENO
 cmp in anyothername.out || test_failed $LINENO
@@ -291,18 +332,20 @@ done
 [ ! -e nx_file ] || test_failed $LINENO
 cmp in copy || test_failed $LINENO
 
-cat in in > in2 || framework_failure
-cat "${in_lz}" "${in_lz}" > in2.lz || framework_failure
-"${LZIP}" -lq in2.lz || test_failed $LINENO
-"${LZIP}" -t in2.lz || test_failed $LINENO
-"${LZIP}" -cd in2.lz > copy2 || test_failed $LINENO
+"${LZIP}" -lq "${in_lz}" "${in_lz}" || test_failed $LINENO
+"${LZIP}" -t "${in_lz}" "${in_lz}" || test_failed $LINENO
+"${LZIP}" -cd "${in_lz}" "${in_lz}" -o out > copy2 || test_failed $LINENO
+[ ! -e out ] || test_failed $LINENO			# override -o
+cmp in2 copy2 || test_failed $LINENO
+rm -f copy2 || framework_failure
+"${LZIP}" -d "${in_lz}" "${in_lz}" -o copy2 || test_failed $LINENO
 cmp in2 copy2 || test_failed $LINENO
+rm -f copy2 || framework_failure
 
-cat in2.lz > copy2.lz || framework_failure
+cat "${in_lz}" "${in_lz}" > copy2.lz || framework_failure
 printf "\ngarbage" >> copy2.lz || framework_failure
 "${LZIP}" -tvvvv copy2.lz 2> /dev/null || test_failed $LINENO
-rm -f copy2 || framework_failure
-"${LZIP}" -aD0 -q copy2.lz
+"${LZIPRECOVER}" -aD0 -q copy2.lz
 [ $? = 2 ] || test_failed $LINENO
 "${LZIP}" -alq copy2.lz
 [ $? = 2 ] || test_failed $LINENO
@@ -319,6 +362,7 @@ rm -f copy2 || framework_failure
 printf "to be overwritten" > copy2 || framework_failure
 "${LZIP}" -df copy2.lz || test_failed $LINENO
 cmp in2 copy2 || test_failed $LINENO
+rm -f copy2 || framework_failure
 
 "${LZIPRECOVER}" -D ,18000 "${in_lz}" > copy || test_failed $LINENO
 "${LZIPRECOVER}" -D 18000 "${in_lz}" >> copy || test_failed $LINENO
@@ -327,19 +371,6 @@ cmp in copy || test_failed $LINENO
 cmp "${inD}" copy || test_failed $LINENO
 "${LZIPRECOVER}" -D 21723,397 "${in_lz}" > copy || test_failed $LINENO
 cmp "${inD}" copy || test_failed $LINENO
-"${LZIPRECOVER}" -D0 -iq "${f6b1_lz}" -fo copy
-[ $? = 2 ] || test_failed $LINENO
-cmp "${f6b1}" copy || test_failed $LINENO
-"${LZIPRECOVER}" -D0 -iq "${f6b1_lz}" > copy
-[ $? = 2 ] || test_failed $LINENO
-cmp "${f6b1}" copy || test_failed $LINENO
-
-printf "LZIP\001+" > in2t.lz || framework_failure	# gap size < 36 bytes
-cat "${in_lz}" in "${in_lz}" >> in2t.lz || framework_failure
-printf "LZIP\001-" >> in2t.lz || framework_failure	# truncated member
-"${LZIPRECOVER}" -D0 -i in2t.lz > copy2 || test_failed $LINENO
-cmp in2 copy2 || test_failed $LINENO
-rm -f in2 in2t.lz copy2 || framework_failure
 
 printf "\ntesting bad input..."
 
@@ -411,6 +442,24 @@ else
 fi
 rm -f int.lz || framework_failure
 
+for i in fox_v2.lz fox_s11.lz fox_de20.lz \
+         fox_bcrc.lz fox_crc0.lz fox_das46.lz fox_mes81.lz ; do
+	"${LZIP}" -tq "${testdir}"/$i
+	[ $? = 2 ] || test_failed $LINENO $i
+done
+
+"${LZIP}" -cd "${fox_lz}" > fox || test_failed $LINENO
+for i in fox_bcrc.lz fox_crc0.lz fox_das46.lz fox_mes81.lz ; do
+	"${LZIP}" -cdq "${testdir}"/$i > out
+	[ $? = 2 ] || test_failed $LINENO $i
+	cmp fox out || test_failed $LINENO $i
+	"${LZIPRECOVER}" -tq -i "${testdir}"/$i || test_failed $LINENO $i
+	"${LZIPRECOVER}" -cdq -i "${testdir}"/$i > out || test_failed $LINENO $i
+	cmp fox out || test_failed $LINENO $i
+done
+rm -f fox out || framework_failure
+
+cat "${in_lz}" "${in_lz}" > in2.lz || framework_failure
 cat "${in_lz}" "${in_lz}" "${in_lz}" > in3.lz || framework_failure
 if dd if=in3.lz of=trunc.lz bs=14752 count=1 2> /dev/null &&
    [ -e trunc.lz ] && cmp in2.lz trunc.lz > /dev/null 2>&1 ; then
@@ -434,11 +483,11 @@ rm -f in3.lz trunc.lz out || framework_failure
 
 for i in "${f6s1_lz}" "${f6s2_lz}" ; do
 	lines=`"${LZIP}" -lvv "$i" | wc -l || test_failed $LINENO "$i"`
-	[ "${lines}" -eq 2 ] || test_failed $LINENO "$i"
+	[ "${lines}" -eq 2 ] || test_failed $LINENO "$i ${lines}"
 done
 for i in "${f6s3_lz}" "${f6s4_lz}" "${f6s5_lz}" "${f6s6_lz}" ; do
 	lines=`"${LZIP}" -lvv "$i" | wc -l || test_failed $LINENO "$i"`
-	[ "${lines}" -eq 9 ] || test_failed $LINENO "$i"
+	[ "${lines}" -eq 9 ] || test_failed $LINENO "$i ${lines}"
 done
 
 cat "${in_lz}" > ingin.lz || framework_failure
@@ -446,13 +495,50 @@ printf "g" >> ingin.lz || framework_failure
 cat "${in_lz}" >> ingin.lz || framework_failure
 "${LZIP}" -lq ingin.lz
 [ $? = 2 ] || test_failed $LINENO
-"${LZIP}" -lq -i ingin.lz || test_failed $LINENO
+"${LZIP}" -atq ingin.lz
+[ $? = 2 ] || test_failed $LINENO
+"${LZIP}" -atq < ingin.lz
+[ $? = 2 ] || test_failed $LINENO
+"${LZIP}" -acdq ingin.lz > out
+[ $? = 2 ] || test_failed $LINENO
+"${LZIP}" -adq < ingin.lz > out
+[ $? = 2 ] || test_failed $LINENO
+"${LZIPRECOVER}" -lq -i ingin.lz || test_failed $LINENO
 "${LZIP}" -t ingin.lz || test_failed $LINENO
+"${LZIP}" -t < ingin.lz || test_failed $LINENO
 "${LZIP}" -cd ingin.lz > copy || test_failed $LINENO
 cmp in copy || test_failed $LINENO
-"${LZIP}" -t < ingin.lz || test_failed $LINENO
 "${LZIP}" -d < ingin.lz > copy || test_failed $LINENO
 cmp in copy || test_failed $LINENO
+"${LZIPRECOVER}" -cd -i ingin.lz > copy2 || test_failed $LINENO
+cmp in2 copy2 || test_failed $LINENO
+
+"${LZIPRECOVER}" -D0 -q "${f6b1_lz}" -fo copy
+[ $? = 2 ] || test_failed $LINENO
+cmp -s "${f6b1}" copy && test_failed $LINENO
+"${LZIPRECOVER}" -D0 -q "${f6b1_lz}" > copy
+[ $? = 2 ] || test_failed $LINENO
+cmp -s "${f6b1}" copy && test_failed $LINENO
+"${LZIPRECOVER}" -D0 -iq "${f6b1_lz}" -fo copy || test_failed $LINENO
+cmp "${f6b1}" copy || test_failed $LINENO
+"${LZIPRECOVER}" -D0 -iq "${f6b1_lz}" > copy || test_failed $LINENO
+cmp "${f6b1}" copy || test_failed $LINENO
+
+touch empty || framework_failure
+"${LZIPRECOVER}" -D0 -q ingin.lz > copy
+[ $? = 2 ] || test_failed $LINENO
+cmp empty copy || test_failed $LINENO
+"${LZIPRECOVER}" -D0 -i ingin.lz > copy2 || test_failed $LINENO
+cmp in2 copy2 || test_failed $LINENO
+printf "LZIP\001+" > in2t.lz || framework_failure	# gap size < 36 bytes
+cat "${in_lz}" in "${in_lz}" >> in2t.lz || framework_failure
+printf "LZIP\001-" >> in2t.lz || framework_failure	# truncated member
+"${LZIPRECOVER}" -D0 -iq in2t.lz > copy2 || test_failed $LINENO
+cmp in2 copy2 || test_failed $LINENO
+"${LZIPRECOVER}" -cd -iq in2t.lz > copy2 || test_failed $LINENO
+cmp in2 copy2 || test_failed $LINENO
+"${LZIPRECOVER}" -t -iq in2t.lz || test_failed $LINENO
+rm -f in2 in2t.lz copy copy2 || framework_failure
 
 printf "\ntesting --merge..."
 
@@ -635,7 +721,78 @@ mv copy.tar.lz copy.lz || framework_failure
 mv copy.lz copy.tlz || framework_failure
 "${LZIPRECOVER}" -R copy.tlz || test_failed $LINENO
 [ -e copy_fixed.tlz ] || test_failed $LINENO
-rm -f copy_fixed.* copy.tlz || framework_failure
+rm -f copy_fixed.tlz copy_fixed.lz copy_fixed.tar.lz copy.tlz ||
+	framework_failure
+
+printf "\ntesting --reproduce..."
+
+if [ -z "${LZIP_NAME}" ] ; then LZIP_NAME=lzip ; fi
+if /bin/sh -c "${LZIP_NAME} -s18KiB" < in > out 2> /dev/null &&
+   cmp "${in_lz}" out > /dev/null 2>&1 ; then
+  rm -f out || framework_failure
+  "${LZIPRECOVER}" --reproduce --lzip-name="${LZIP_NAME}" -o out \
+    --reference-file=foo "${in_lz}" || test_failed $LINENO "${LZIP_NAME}"
+  [ ! -e out ] || test_failed $LINENO
+
+  for i in 6 7 8 9 ; do
+    for f in "${testdir}"/test_bad${i}.txt "${testdir}"/test.txt ; do
+      rm -f out || framework_failure
+      "${LZIPRECOVER}" -q --reproduce --lzip-name="${LZIP_NAME}" \
+        --reference-file="$f" "${testdir}"/test_bad${i}.lz -o out ||
+        test_failed $LINENO "${LZIP_NAME} $i $f"
+      cmp "${in_lz}" out || test_failed $LINENO "${LZIP_NAME} $i $f"
+      rm -f out || framework_failure
+      "${LZIPRECOVER}" -q --reproduce --lzip-name="${LZIP_NAME}" \
+        --reference-file="$f" "${testdir}"/test_bad${i}.lz -o out \
+        --lzip-level=6 || test_failed $LINENO "${LZIP_NAME} $i $f level=6"
+      cmp "${in_lz}" out || test_failed $LINENO "${LZIP_NAME} $i $f level=6"
+      rm -f out || framework_failure
+      "${LZIPRECOVER}" -q --reproduce --lzip-name="${LZIP_NAME}" \
+        --reference-file="$f" "${testdir}"/test_bad${i}.lz -o out \
+        --lzip-level=m36 || test_failed $LINENO "${LZIP_NAME} $i $f level=m36"
+      cmp "${in_lz}" out || test_failed $LINENO "${LZIP_NAME} $i $f level=m36"
+    done
+  done
+
+  cat "${in_lz}" "${in_lz}" "${in_lz}" "${in_lz}" > in4.lz || framework_failure
+  # multimember reproduction using test_bad[6789].txt as reference
+  cat "${testdir}"/test_bad6.lz "${testdir}"/test_bad7.lz \
+      "${testdir}"/test_bad8.lz "${testdir}"/test_bad9.lz > mm_bad.lz ||
+    framework_failure
+  rm -f out || framework_failure
+  for i in 6 7 8 9 ; do			# reproduce one member each time
+    "${LZIPRECOVER}" -q --reproduce --lzip-name="${LZIP_NAME}" \
+      --reference-file="${testdir}"/test_bad${i}.txt mm_bad.lz -o out ||
+      test_failed $LINENO "${LZIP_NAME} $i"
+    mv -f out mm_bad.lz
+  done
+  cmp in4.lz mm_bad.lz || test_failed $LINENO "${LZIP_NAME}"
+
+  # multimember reproduction using test.txt as reference
+  cat "${testdir}"/test_bad6.lz "${testdir}"/test_bad7.lz \
+      "${testdir}"/test_bad8.lz "${testdir}"/test_bad9.lz > mm_bad.lz ||
+    framework_failure
+  rm -f out || framework_failure
+  for i in 6 7 8 9 ; do			# reproduce one member each time
+    "${LZIPRECOVER}" -q --reproduce --lzip-name="${LZIP_NAME}" \
+      --reference-file="${testdir}"/test.txt mm_bad.lz -o out ||
+      test_failed $LINENO "${LZIP_NAME} $i"
+    mv -f out mm_bad.lz
+  done
+  cmp in4.lz mm_bad.lz || test_failed $LINENO "${LZIP_NAME}"
+  rm -f in4.lz mm_bad.lz || framework_failure
+
+  "${LZIPRECOVER}" -q --debug-reproduce=13-7356 --lzip-name="${LZIP_NAME}" \
+    --reference-file="${testdir}"/test.txt "${testdir}"/test.txt.lz ||
+    test_failed $LINENO "${LZIP_NAME}"
+
+  "${LZIPRECOVER}" -q --debug-reproduce=512,5120,512 --lzip-name="${LZIP_NAME}" \
+    --reference-file="${testdir}"/test.txt "${testdir}"/test.txt.lz ||
+    test_failed $LINENO "${LZIP_NAME}"
+else
+  printf "\nwarning: skipping --reproduce test: ${LZIP_NAME} not found or not the right version."
+  printf "\nTry 'make LZIP_NAME=<name_of_lzip_executable> check'."
+fi
 
 printf "\ntesting --split..."
 
@@ -785,7 +942,6 @@ rm -f rec*ingin.lz || framework_failure
 
 printf "\ntesting --*=damaged..."
 
-touch empty || framework_failure
 cat "${in_lz}" > in.lz || framework_failure
 cat "${in_lz}" in > int.lz || framework_failure
 "${LZIPRECOVER}" --dump=damaged in.lz > copy || test_failed $LINENO
diff --git a/testsuite/fox_bcrc.lz b/testsuite/fox_bcrc.lz
new file mode 100644
index 0000000..8f6a7c4
--- /dev/null
+++ b/testsuite/fox_bcrc.lz
diff --git a/testsuite/fox_crc0.lz b/testsuite/fox_crc0.lz
new file mode 100644
index 0000000..1abe926
--- /dev/null
+++ b/testsuite/fox_crc0.lz
diff --git a/testsuite/fox_das46.lz b/testsuite/fox_das46.lz
new file mode 100644
index 0000000..43ed9f9
--- /dev/null
+++ b/testsuite/fox_das46.lz
diff --git a/testsuite/fox_de20.lz b/testsuite/fox_de20.lz
new file mode 100644
index 0000000..10949d8
--- /dev/null
+++ b/testsuite/fox_de20.lz
diff --git a/testsuite/fox_mes81.lz b/testsuite/fox_mes81.lz
new file mode 100644
index 0000000..d50ef2e
--- /dev/null
+++ b/testsuite/fox_mes81.lz
diff --git a/testsuite/fox_s11.lz b/testsuite/fox_s11.lz
new file mode 100644
index 0000000..dca909c
--- /dev/null
+++ b/testsuite/fox_s11.lz
diff --git a/testsuite/fox_v2.lz b/testsuite/fox_v2.lz
new file mode 100644
index 0000000..8620981
--- /dev/null
+++ b/testsuite/fox_v2.lz
diff --git a/testsuite/test_bad1.lz b/testsuite/test_bad1.lz
index 16762ca..2129c90 100644
--- a/testsuite/test_bad1.lz
+++ b/testsuite/test_bad1.lz
diff --git a/testsuite/test_bad6.lz b/testsuite/test_bad6.lz
new file mode 100644
index 0000000..cfea88c
--- /dev/null
+++ b/testsuite/test_bad6.lz
diff --git a/testsuite/test_bad6.txt b/testsuite/test_bad6.txt
new file mode 100644
index 0000000..b47462e
--- /dev/null
+++ b/testsuite/test_bad6.txt
@@ -0,0 +1,26 @@
+)  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
+\ No newline at end of file
diff --git a/testsuite/test_bad7.lz b/testsuite/test_bad7.lz
new file mode 100644
index 0000000..77f2b85
--- /dev/null
+++ b/testsuite/test_bad7.lz
diff --git a/testsuite/test_bad7.txt b/testsuite/test_bad7.txt
new file mode 100644
index 0000000..be54c7c
--- /dev/null
+++ b/testsuite/test_bad7.txt
@@ -0,0 +1,215 @@
+, 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
+\ No newline at end of file
diff --git a/testsuite/test_bad8.lz b/testsuite/test_bad8.lz
new file mode 100644
index 0000000..fca701b
--- /dev/null
+++ b/testsuite/test_bad8.lz
diff --git a/testsuite/test_bad8.txt b/testsuite/test_bad8.txt
new file mode 100644
index 0000000..3cb3ff4
--- /dev/null
+++ b/testsuite/test_bad8.txt
@@ -0,0 +1,3 @@
+1
+
+ Copyright (C) 1989
+\ No newline at end of file
diff --git a/testsuite/test_bad9.lz b/testsuite/test_bad9.lz
new file mode 100644
index 0000000..becb0ec
--- /dev/null
+++ b/testsuite/test_bad9.lz
diff --git a/testsuite/test_bad9.txt b/testsuite/test_bad9.txt
new file mode 100644
index 0000000..b72a626
--- /dev/null
+++ b/testsuite/test_bad9.txt
@@ -0,0 +1,5 @@
+General
+Public License instead of this License.
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 2, June 1991
+
diff --git a/testsuite/test_em.txt.lz b/testsuite/test_em.txt.lz
new file mode 100644
index 0000000..7e96250
--- /dev/null
+++ b/testsuite/test_em.txt.lz