4 files changed, 94 insertions, 15 deletions
diff --git a/testsuite/grep.tests b/testsuite/grep.tests
index d4bf80d..e0135dc 100755
--- a/testsuite/grep.tests
+++ b/testsuite/grep.tests
@@ -98,5 +98,9 @@ testing "grep -o does not loop forever" \
 	'grep -o "[^/]*$"' \
 	"test\n" \
 	"" "/var/test\n"
+testing "grep -o does not loop forever on zero-length match" \
+	'grep -o "" | head -n1' \
+	"" \
+	"" "test\n"
 
 exit $FAILCOUNT
diff --git a/testsuite/mdev.tests b/testsuite/mdev.tests
index c375fc7..a46929b 100755
--- a/testsuite/mdev.tests
+++ b/testsuite/mdev.tests
@@ -38,6 +38,16 @@ brw-rw---- 1 0 0 8,0 sda
 SKIP=
 
 # continuing to use directory structure from prev test
+optional STATIC FEATURE_MDEV_CONF FEATURE_LS_TIMESTAMPS FEATURE_LS_USERNAME
+testing "mdev deletes /block/sda" \
+	"env - PATH=$PATH ACTION=remove DEVPATH=/block/sda chroot mdev.testdir /mdev 2>&1;
+	ls -ln mdev.testdir/dev | $FILTER_LS" \
+"\
+" \
+	"" ""
+SKIP=
+
+# continuing to use directory structure from prev test
 rm -rf mdev.testdir/dev/*
 echo ".* 1:1 666" >mdev.testdir/etc/mdev.conf
 echo "sda 2:2 444" >>mdev.testdir/etc/mdev.conf
diff --git a/testsuite/patch.tests b/testsuite/patch.tests
index 749d936..e482304 100755
--- a/testsuite/patch.tests
+++ b/testsuite/patch.tests
@@ -1,13 +1,13 @@
 #!/bin/sh
 # Copyright 2008 by Denys Vlasenko
-# Licensed under GPL v2, see file LICENSE for details.
+# Licensed under GPLv2, see file LICENSE in this source tree.
 
 . ./testing.sh
 
-# testing "test name" "options" "expected result" "file input" "stdin"
+# testing "test name" "command(s)" "expected result" "file input" "stdin"
 
 testing "patch with old_file == new_file" \
-	'patch; echo $?; cat input' \
+	'patch 2>&1; echo $?; cat input' \
 "\
 patching file input
 0
@@ -29,7 +29,7 @@ zxc
 " \
 
 testing "patch with nonexistent old_file" \
-	'patch; echo $?; cat input' \
+	'patch 2>&1; echo $?; cat input' \
 "\
 patching file input
 0
@@ -51,7 +51,7 @@ zxc
 " \
 
 testing "patch -R with nonexistent old_file" \
-	'patch -R; echo $?; cat input' \
+	'patch -R 2>&1; echo $?; cat input' \
 "\
 patching file input
 0
@@ -75,9 +75,12 @@ zxc
 testing "patch detects already applied hunk" \
 	'patch 2>&1; echo $?; cat input' \
 "\
+Possibly reversed hunk 1 at 2
+Hunk 1 FAILED 1/1.
+ abc
++def
+ 123
 patching file input
-patch: hunk #1 FAILED at 1
-patch: 1 out of 1 hunk FAILED
 1
 abc
 def
@@ -97,13 +100,15 @@ def
  123
 " \
 
-# Currently fails (erroneously appends second "456" line):
-false && testing "patch detects already applied hunk" \
+testing "patch detects already applied hunk at the EOF" \
 	'patch 2>&1; echo $?; cat input' \
 "\
+Possibly reversed hunk 1 at 3
+Hunk 1 FAILED 1/1.
+ abc
+ 123
++456
 patching file input
-patch: hunk #1 FAILED at 2
-patch: 1 out of 1 hunk FAILED
 1
 abc
 123
@@ -123,6 +128,53 @@ abc
 +456
 " \
 
+# testing "test name" "command(s)" "expected result" "file input" "stdin"
+testing "patch -N ignores already applied hunk" \
+	'patch -N 2>&1; echo $?; cat input' \
+"\
+patching file input
+0
+abc
+def
+123
+" \
+"\
+abc
+def
+123
+" \
+"\
+--- input
++++ input
+@@ -1,2 +1,3 @@
+ abc
++def
+ 123
+" \
+
+# testing "test name" "command(s)" "expected result" "file input" "stdin"
+testing "patch FILE PATCH" \
+	'cat >a.patch; patch input a.patch 2>&1; echo $?; cat input; rm a.patch' \
+"\
+patching file input
+0
+abc
+def
+123
+" \
+"\
+abc
+123
+" \
+"\
+--- foo.old
++++ foo
+@@ -1,2 +1,3 @@
+ abc
++def
+ 123
+" \
+
 rm input.orig 2>/dev/null
 
 exit $FAILCOUNT
diff --git a/testsuite/sed.tests b/testsuite/sed.tests
index 3301a25..61551e3 100755
--- a/testsuite/sed.tests
+++ b/testsuite/sed.tests
@@ -80,10 +80,18 @@ test x"$SKIP_KNOWN_BUGS" = x"" && {
 # 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"
 }
+# non-GNU sed: N does _not_ flush pattern space, therefore c is eaten @ script end
+# GNU sed: N flushes pattern space, therefore c is printed too @ script end
+testing "sed N (flushes pattern space (GNU behavior))" "sed -e 'N;p'" \
+	"a\nb\na\nb\nc\n" "" "a\nb\nc\n"
+
+testing "sed N test2" "sed ':a;N;s/\n/ /;ta'" \
+	"a b c\n" "" "a\nb\nc\n"
+
+testing "sed N test3" "sed 'N;s/\n/ /'" \
+	"a b\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"
 
@@ -270,11 +278,16 @@ testing "sed a cmd ended by double backslash" \
 	| two \\
 '
 
-# fisrt three lines are deleted; 4th line is matched and printed by "2,3" and by "4" ranges
+# first three lines are deleted; 4th line is matched and printed by "2,3" and by "4" ranges
 testing "sed with N skipping lines past ranges on next cmds" \
 	"sed -n '1{N;N;d};1p;2,3p;3p;4p'" \
 	"4\n4\n" "" "1\n2\n3\n4\n"
 
+testing "sed -i with address modifies all files, not only first" \
+	"cp input input2; sed -i -e '1s/foo/bar/' input input2 && cat input input2; rm input2" \
+	"bar\nbar\n" "foo\n" ""
+
+
 # testing "description" "arguments" "result" "infile" "stdin"
 
 exit $FAILCOUNT