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+#!/bin/sh
+
+# SUSv3 compliant sed tests.
+# Copyright 2005 by Rob Landley <rob@landley.net>
+# Licensed under GPL v2, see file LICENSE for details.
+
+. testing.sh
+
+# testing "description" "arguments" "result" "infile" "stdin"
+
+# Corner cases
+testing "sed no files (stdin)" 'sed ""' "hello\n" "" "hello\n"
+testing "sed explicit stdin" 'sed "" -' "hello\n" "" "hello\n"
+testing "sed handles empty lines" "sed -e 's/\$/@/'" "@\n" "" "\n"
+testing "sed stdin twice" 'sed "" - -' "hello" "" "hello"
+
+# Trailing EOF.
+#	Match $, at end of each file or all files?
+
+# -e corner cases
+#	without -e
+#	multiple -e
+#		interact with a
+#	-eee arg1 arg2 arg3
+# -f corner cases
+#	-e -f -e
+# -n corner cases
+#	no newline at EOF?
+# -r corner cases
+#	Just make sure it works.
+# -i corner cases:
+#	sed -i -
+#	permissions
+#	-i on a symlink
+#	on a directory
+#       With $ last-line test
+# Continue with \
+#       End of script with trailing \
+
+# command list
+testing "sed accepts blanks before command" "sed -e '1 d'" "" "" ""
+testing "sed accepts newlines in -e" "sed -e 'i\
+1
+a\
+3'" "1\n2\n3\n" "" "2\n"
+testing "sed accepts multiple -e" "sed -e 'i\' -e '1' -e 'a\' -e '3'" \
+	"1\n2\n3\n" "" "2\n"
+
+# substitutions
+testing "sed -n" "sed -n -e s/foo/bar/ -e s/bar/baz/" "" "" "foo\n"
+testing "sed s//p" "sed -e s/foo/bar/p -e s/bar/baz/p" "bar\nbaz\nbaz\n" \
+	"" "foo\n"
+testing "sed -n s//p" "sed -ne s/abc/def/p" "def\n" "" "abc\n"
+testing "sed s//g (exhaustive)" "sed -e 's/[[:space:]]*/,/g'" ",1,2,3,4,5,\n" \
+	"" "12345\n"
+testing "sed s arbitrary delimiter" "sed -e 's woo boing '" "boing\n" "" "woo\n"
+testing "sed s chains" "sed -e s/foo/bar/ -e s/bar/baz/" "baz\n" "" "foo\n"
+testing "sed s chains2" "sed -e s/foo/bar/ -e s/baz/nee/" "bar\n" "" "foo\n"
+testing "sed s [delimiter]" "sed -e 's@[@]@@'" "onetwo" "" "one@two"
+testing "sed s with \\t (GNU ext)" "sed 's/\t/ /'" "one two" "" "one\ttwo"
+
+# branch
+testing "sed b (branch)" "sed -e 'b one;p;: one'" "foo\n" "" "foo\n"
+testing "sed b (branch with no label jumps to end)" "sed -e 'b;p'" \
+	"foo\n" "" "foo\n"
+
+# test and branch
+testing "sed t (test/branch)" "sed -e 's/a/1/;t one;p;: one;p'" \
+	"1\n1\nb\nb\nb\nc\nc\nc\n" "" "a\nb\nc\n"
+testing "sed t (test/branch clears test bit)" "sed -e 's/a/b/;:loop;t loop'" \
+	"b\nb\nc\n" "" "a\nb\nc\n"
+testing "sed T (!test/branch)" "sed -e 's/a/1/;T notone;p;: notone;p'" \
+	"1\n1\n1\nb\nb\nc\nc\n" "" "a\nb\nc\n"
+
+# Normal sed end-of-script doesn't print "c" because n flushed the pattern
+# space.  If n hits EOF, pattern space is empty when script ends.
+# Query: how does this interact with no newline at EOF?
+testing "sed n (flushes pattern space, terminates early)" "sed -e 'n;p'" \
+	"a\nb\nb\nc\n" "" "a\nb\nc\n"
+# N does _not_ flush pattern space, therefore c is still in there @ script end.
+testing "sed N (doesn't flush pattern space when terminating)" "sed -e 'N;p'" \
+	"a\nb\na\nb\nc\n" "" "a\nb\nc\n"
+testing "sed address match newline" 'sed "/b/N;/b\\nc/i woo"' \
+	"a\nwoo\nb\nc\nd\n" "" "a\nb\nc\nd\n"
+
+# Multiple lines in pattern space
+testing "sed N (stops at end of input) and P (prints to first newline only)" \
+	"sed -n 'N;P;p'" "a\na\nb\n" "" "a\nb\nc\n"
+
+# Hold space
+testing "sed G (append hold space to pattern space)" 'sed G' "a\n\nb\n\nc\n\n" \
+	"" "a\nb\nc\n"
+#testing "sed g/G (swap/append hold and patter space)"
+#testing "sed g (swap hold/pattern space)"
+
+testing "sed d ends script iteration" \
+	"sed -e '/ook/d;s/ook/ping/p;i woot'" "" "" "ook\n"
+testing "sed d ends script iteration (2)" \
+	"sed -e '/ook/d;a\' -e 'bang'" "woot\nbang\n" "" "ook\nwoot\n"
+
+# Multiple files, with varying newlines and NUL bytes
+testing "sed embedded NUL" "sed -e 's/woo/bang/'" "\0bang\0woo\0" "" \
+	"\0woo\0woo\0"
+testing "sed embedded NUL g" "sed -e 's/woo/bang/g'" "bang\0bang\0" "" \
+	"woo\0woo\0"
+echo -e "/woo/a he\0llo" > sed.commands
+testing "sed NUL in command" "sed -f sed.commands" "woo\nhe\0llo\n" "" "woo"
+rm sed.commands
+
+# sed has funky behavior with newlines at the end of file.  Test lots of
+# corner cases with the optional newline appending behavior.
+
+testing "sed normal newlines" "sed -e 's/woo/bang/' input -" "bang\nbang\n" \
+	"woo\n" "woo\n"
+testing "sed leave off trailing newline" "sed -e 's/woo/bang/' input -" \
+	"bang\nbang" "woo\n" "woo"
+testing "sed autoinsert newline" "sed -e 's/woo/bang/' input -" "bang\nbang" \
+	"woo" "woo"
+testing "sed empty file plus cat" "sed -e 's/nohit//' input -" "one\ntwo" \
+	"" "one\ntwo"
+testing "sed cat plus empty file" "sed -e 's/nohit//' input -" "one\ntwo" \
+	"one\ntwo" ""
+testing "sed append autoinserts newline" "sed -e '/woot/a woo' -" \
+	"woot\nwoo\n" "" "woot"
+testing "sed insert doesn't autoinsert newline" "sed -e '/woot/i woo' -" \
+	"woo\nwoot" "" "woot"
+testing "sed print autoinsert newlines" "sed -e 'p' -" "one\none" "" "one"
+testing "sed print autoinsert newlines two files" "sed -e 'p' input -" \
+	"one\none\ntwo\ntwo" "one" "two"
+testing "sed noprint, no match, no newline" "sed -ne 's/woo/bang/' input" \
+	"" "no\n" ""
+testing "sed selective matches with one nl" "sed -ne 's/woo/bang/p' input -" \
+	"a bang\nc bang\n" "a woo\nb no" "c woo\nd no"
+testing "sed selective matches insert newline" \
+	"sed -ne 's/woo/bang/p' input -" "a bang\nb bang\nd bang" \
+	"a woo\nb woo" "c no\nd woo"
+testing "sed selective matches noinsert newline" \
+	"sed -ne 's/woo/bang/p' input -" "a bang\nb bang" "a woo\nb woo" \
+	"c no\nd no"
+testing "sed clusternewline" \
+	"sed -e '/one/a 111' -e '/two/i 222' -e p input -" \
+	"one\none\n111\n222\ntwo\ntwo" "one" "two"
+testing "sed subst+write" \
+	"sed -e 's/i/z/' -e 'woutputw' input -; echo -n X; cat outputw" \
+	"thzngy\nagaznXthzngy\nagazn" "thingy" "again"
+rm outputw
+testing "sed trailing NUL" \
+	"sed 's/i/z/' input -" \
+	"a\0b\0\nc" "a\0b\0" "c"
+testing "sed escaped newline in command" \
+	"sed 's/a/z\\
+z/' input" \
+	"z\nz" "a" ""
+
+# Test end-of-file matching behavior
+
+testing "sed match EOF" "sed -e '"'$p'"'" "hello\nthere\nthere" "" \
+	"hello\nthere"
+testing "sed match EOF two files" "sed -e '"'$p'"' input -" \
+	"one\ntwo\nthree\nfour\nfour" "one\ntwo" "three\nfour"
+# sed match EOF inline: gnu sed 4.1.5 outputs this:
+#00000000  6f 6e 65 0a 6f 6f 6b 0a  6f 6f 6b 0a 74 77 6f 0a  |one.ook.ook.two.|
+#00000010  0a 74 68 72 65 65 0a 6f  6f 6b 0a 6f 6f 6b 0a 66  |.three.ook.ook.f|
+#00000020  6f 75 72                                          |our|
+# which looks buggy to me.
+$ECHO -ne "three\nfour" > input2
+testing "sed match EOF inline" \
+	"sed -e '"'$i ook'"' -i input input2 && cat input input2" \
+	"one\nook\ntwothree\nook\nfour" "one\ntwo" ""
+rm input2
+
+# Test lie-to-autoconf
+
+testing "sed lie-to-autoconf" "sed --version | grep -o 'GNU sed version '" \
+	"GNU sed version \n" "" ""
+
+# Jump to nonexistent label
+testing "sed nonexistent label" "sed -e 'b walrus' 2> /dev/null || echo yes" \
+	"yes\n" "" ""
+
+testing "sed backref from empty s uses range regex" \
+	"sed -e '/woot/s//eep \0 eep/'" "eep woot eep" "" "woot"
+
+testing "sed backref from empty s uses range regex with newline" \
+	"sed -e '/woot/s//eep \0 eep/'" "eep woot eep\n" "" "woot\n"
+
+# -i with no filename
+
+touch ./-  # Detect gnu failure mode here.
+testing "sed -i with no arg [GNUFAIL]" "sed -e '' -i 2> /dev/null || echo yes" \
+	"yes\n" "" ""
+rm ./-     # Clean up
+
+testing "sed s/xxx/[/" "sed -e 's/xxx/[/'" "[\n" "" "xxx\n"
+
+# Ponder this a bit more, why "woo not found" from gnu version?
+#testing "sed doesn't substitute in deleted line" \
+#	"sed -e '/ook/d;s/ook//;t woo;a bang;'" "bang" "" "ook\n"
+
+# This makes both seds very unhappy.  Why?
+#testing "sed -g (exhaustive)" "sed -e 's/[[:space:]]*/,/g'" ",1,2,3,4,5," \
+#	"" "12345"
+
+# testing "description" "arguments" "result" "infile" "stdin"
+
+testing "sed n command must reset 'substituted' bit" \
+	"sed 's/1/x/;T;n;: next;s/3/y/;t quit;n;b next;: quit;q'" \
+	"0\nx\n2\ny\n" "" "0\n1\n2\n3\n"
+
+exit $FAILCOUNT