24 files changed, 436 insertions, 91 deletions

diff --git a/t/perf/run b/t/perf/run
index cfd70129b..e8adedadf 100755
--- a/t/perf/run
+++ b/t/perf/run
@@ -30,7 +30,13 @@ unpack_git_rev () {
 }
 build_git_rev () {
 	rev=$1
-	cp ../../config.mak build/$rev/config.mak
+	for config in config.mak config.mak.autogen config.status
+	do
+		if test -e "../../$config"
+		then
+			cp "../../$config" "build/$rev/"
+		fi
+	done
 	(cd build/$rev && make $GIT_PERF_MAKE_OPTS) ||
 	die "failed to build revision '$mydir'"
 }
diff --git a/t/t1401-symbolic-ref.sh b/t/t1401-symbolic-ref.sh
index ca3fa406c..eec3e90f9 100755
--- a/t/t1401-symbolic-ref.sh
+++ b/t/t1401-symbolic-ref.sh
@@ -33,18 +33,25 @@ test_expect_success 'symbolic-ref refuses bare sha1' '
 '
 reset_to_sane
 
-test_expect_success 'symbolic-ref deletes HEAD' '
-	git symbolic-ref -d HEAD &&
+test_expect_success 'HEAD cannot be removed' '
+	test_must_fail git symbolic-ref -d HEAD
+'
+
+reset_to_sane
+
+test_expect_success 'symbolic-ref can be deleted' '
+	git symbolic-ref NOTHEAD refs/heads/foo &&
+	git symbolic-ref -d NOTHEAD &&
 	test_path_is_file .git/refs/heads/foo &&
-	test_path_is_missing .git/HEAD
+	test_path_is_missing .git/NOTHEAD
 '
 reset_to_sane
 
-test_expect_success 'symbolic-ref deletes dangling HEAD' '
-	git symbolic-ref HEAD refs/heads/missing &&
-	git symbolic-ref -d HEAD &&
+test_expect_success 'symbolic-ref can delete dangling symref' '
+	git symbolic-ref NOTHEAD refs/heads/missing &&
+	git symbolic-ref -d NOTHEAD &&
 	test_path_is_missing .git/refs/heads/missing &&
-	test_path_is_missing .git/HEAD
+	test_path_is_missing .git/NOTHEAD
 '
 reset_to_sane
 
diff --git a/t/t2010-checkout-ambiguous.sh b/t/t2010-checkout-ambiguous.sh
index e76e84afb..2e47fe01c 100755
--- a/t/t2010-checkout-ambiguous.sh
+++ b/t/t2010-checkout-ambiguous.sh
@@ -41,6 +41,15 @@ test_expect_success 'check ambiguity' '
 	test_must_fail git checkout world all
 '
 
+test_expect_success 'check ambiguity in subdir' '
+	mkdir sub &&
+	# not ambiguous because sub/world does not exist
+	git -C sub checkout world ../all &&
+	echo hello >sub/world &&
+	# ambiguous because sub/world does exist
+	test_must_fail git -C sub checkout world ../all
+'
+
 test_expect_success 'disambiguate checking out from a tree-ish' '
 	echo bye > world &&
 	git checkout world -- world &&
diff --git a/t/t2024-checkout-dwim.sh b/t/t2024-checkout-dwim.sh
index 468a000e4..3e5ac81bd 100755
--- a/t/t2024-checkout-dwim.sh
+++ b/t/t2024-checkout-dwim.sh
@@ -174,6 +174,18 @@ test_expect_success 'checkout of branch with a file having the same name fails'
 	test_branch master
 '
 
+test_expect_success 'checkout of branch with a file in subdir having the same name fails' '
+	git checkout -B master &&
+	test_might_fail git branch -D spam &&
+
+	>spam &&
+	mkdir sub &&
+	mv spam sub/spam &&
+	test_must_fail git -C sub checkout spam &&
+	test_must_fail git rev-parse --verify refs/heads/spam &&
+	test_branch master
+'
+
 test_expect_success 'checkout <branch> -- succeeds, even if a file with the same name exists' '
 	git checkout -B master &&
 	test_might_fail git branch -D spam &&
diff --git a/t/t2107-update-index-basic.sh b/t/t2107-update-index-basic.sh
index dfe02f481..32ac6e09b 100755
--- a/t/t2107-update-index-basic.sh
+++ b/t/t2107-update-index-basic.sh
@@ -80,4 +80,17 @@ test_expect_success '.lock files cleaned up' '
 	)
 '
 
+test_expect_success '--chmod=+x and chmod=-x in the same argument list' '
+	>A &&
+	>B &&
+	git add A B &&
+	git update-index --chmod=+x A --chmod=-x B &&
+	cat >expect <<-\EOF &&
+	100755 e69de29bb2d1d6434b8b29ae775ad8c2e48c5391 0	A
+	100644 e69de29bb2d1d6434b8b29ae775ad8c2e48c5391 0	B
+	EOF
+	git ls-files --stage A B >actual &&
+	test_cmp expect actual
+'
+
 test_done
diff --git a/t/t3404-rebase-interactive.sh b/t/t3404-rebase-interactive.sh
index 597e94e29..e38e29638 100755
--- a/t/t3404-rebase-interactive.sh
+++ b/t/t3404-rebase-interactive.sh
@@ -1195,7 +1195,7 @@ To avoid this message, use "drop" to explicitly remove a commit.
 Use 'git config rebase.missingCommitsCheck' to change the level of warnings.
 The possible behaviours are: ignore, warn, error.
 
-You can fix this with 'git rebase --edit-todo'.
+You can fix this with 'git rebase --edit-todo' and then run 'git rebase --continue'.
 Or you can abort the rebase with 'git rebase --abort'.
 EOF
 
@@ -1219,7 +1219,7 @@ cat >expect <<EOF
 Warning: the command isn't recognized in the following line:
  - badcmd $(git rev-list --oneline -1 master~1)
 
-You can fix this with 'git rebase --edit-todo'.
+You can fix this with 'git rebase --edit-todo' and then run 'git rebase --continue'.
 Or you can abort the rebase with 'git rebase --abort'.
 EOF
 
@@ -1254,7 +1254,7 @@ cat >expect <<EOF
 Warning: the SHA-1 is missing or isn't a commit in the following line:
  - edit XXXXXXX False commit
 
-You can fix this with 'git rebase --edit-todo'.
+You can fix this with 'git rebase --edit-todo' and then run 'git rebase --continue'.
 Or you can abort the rebase with 'git rebase --abort'.
 EOF
 
diff --git a/t/t3700-add.sh b/t/t3700-add.sh
index 2978cb9d6..924a26612 100755
--- a/t/t3700-add.sh
+++ b/t/t3700-add.sh
@@ -349,4 +349,52 @@ test_expect_success POSIXPERM,SYMLINKS 'git add --chmod=+x with symlinks' '
 	test_mode_in_index 100755 foo2
 '
 
+test_expect_success 'git add --chmod=[+-]x changes index with already added file' '
+	echo foo >foo3 &&
+	git add foo3 &&
+	git add --chmod=+x foo3 &&
+	test_mode_in_index 100755 foo3 &&
+	echo foo >xfoo3 &&
+	chmod 755 xfoo3 &&
+	git add xfoo3 &&
+	git add --chmod=-x xfoo3 &&
+	test_mode_in_index 100644 xfoo3
+'
+
+test_expect_success POSIXPERM 'git add --chmod=[+-]x does not change the working tree' '
+	echo foo >foo4 &&
+	git add foo4 &&
+	git add --chmod=+x foo4 &&
+	! test -x foo4
+'
+
+test_expect_success 'no file status change if no pathspec is given' '
+	>foo5 &&
+	>foo6 &&
+	git add foo5 foo6 &&
+	git add --chmod=+x &&
+	test_mode_in_index 100644 foo5 &&
+	test_mode_in_index 100644 foo6
+'
+
+test_expect_success 'no file status change if no pathspec is given in subdir' '
+	mkdir -p sub &&
+	(
+		cd sub &&
+		>sub-foo1 &&
+		>sub-foo2 &&
+		git add . &&
+		git add --chmod=+x &&
+		test_mode_in_index 100644 sub-foo1 &&
+		test_mode_in_index 100644 sub-foo2
+	)
+'
+
+test_expect_success 'all statuses changed in folder if . is given' '
+	git add --chmod=+x . &&
+	test $(git ls-files --stage | grep ^100644 | wc -l) -eq 0 &&
+	git add --chmod=-x . &&
+	test $(git ls-files --stage | grep ^100755 | wc -l) -eq 0
+'
+
 test_done
diff --git a/t/t4014-format-patch.sh b/t/t4014-format-patch.sh
index b0579dd45..8d90a6e50 100755
--- a/t/t4014-format-patch.sh
+++ b/t/t4014-format-patch.sh
@@ -754,9 +754,22 @@ test_expect_success 'format-patch --ignore-if-in-upstream HEAD' '
 	git format-patch --ignore-if-in-upstream HEAD
 '
 
+git_version="$(git --version | sed "s/.* //")"
+
+signature() {
+	printf "%s\n%s\n\n" "-- " "${1:-$git_version}"
+}
+
+test_expect_success 'format-patch default signature' '
+	git format-patch --stdout -1 | tail -n 3 >output &&
+	signature >expect &&
+	test_cmp expect output
+'
+
 test_expect_success 'format-patch --signature' '
-	git format-patch --stdout --signature="my sig" -1 >output &&
-	grep "my sig" output
+	git format-patch --stdout --signature="my sig" -1 | tail -n 3 >output &&
+	signature "my sig" >expect &&
+	test_cmp expect output
 '
 
 test_expect_success 'format-patch with format.signature config' '
@@ -1502,12 +1515,12 @@ test_expect_success 'format-patch -o overrides format.outputDirectory' '
 
 test_expect_success 'format-patch --base' '
 	git checkout side &&
-	git format-patch --stdout --base=HEAD~3 -1 >patch &&
-	grep "^base-commit:" patch >actual &&
-	grep "^prerequisite-patch-id:" patch >>actual &&
-	echo "base-commit: $(git rev-parse HEAD~3)" >expected &&
+	git format-patch --stdout --base=HEAD~3 -1 | tail -n 7 >actual &&
+	echo >expected &&
+	echo "base-commit: $(git rev-parse HEAD~3)" >>expected &&
 	echo "prerequisite-patch-id: $(git show --patch HEAD~2 | git patch-id --stable | awk "{print \$1}")" >>expected &&
 	echo "prerequisite-patch-id: $(git show --patch HEAD~1 | git patch-id --stable | awk "{print \$1}")" >>expected &&
+	signature >> expected &&
 	test_cmp expected actual
 '
 
@@ -1605,6 +1618,14 @@ test_expect_success 'format-patch --base overrides format.useAutoBase' '
 	test_cmp expected actual
 '
 
+test_expect_success 'format-patch --base with --attach' '
+	git format-patch --attach=mimemime --stdout --base=HEAD~ -1 >patch &&
+	sed -n -e "/^base-commit:/s/.*/1/p" -e "/^---*mimemime--$/s/.*/2/p" \
+		patch >actual &&
+	test_write_lines 1 2 >expect &&
+	test_cmp expect actual
+'
+
 test_expect_success 'format-patch --pretty=mboxrd' '
 	sp=" " &&
 	cat >msg <<-INPUT_END &&
diff --git a/t/t4051-diff-function-context.sh b/t/t4051-diff-function-context.sh
index b79b87790..6154acb45 100755
--- a/t/t4051-diff-function-context.sh
+++ b/t/t4051-diff-function-context.sh
@@ -67,6 +67,15 @@ test_expect_success 'setup' '
 	commit_and_tag long_common_tail file.c &&
 
 	git checkout initial &&
+	cat "$dir/hello.c" "$dir/dummy.c" >file.c &&
+	commit_and_tag hello_dummy file.c &&
+
+	# overlap function context of 1st change and -u context of 2nd change
+	grep -v "delete me from hello" <"$dir/hello.c" >file.c &&
+	sed 2p <"$dir/dummy.c" >>file.c &&
+	commit_and_tag changed_hello_dummy file.c &&
+
+	git checkout initial &&
 	grep -v "delete me from hello" <file.c >file.c.new &&
 	mv file.c.new file.c &&
 	cat "$dir/appended1.c" >>file.c &&
@@ -179,4 +188,20 @@ test_expect_success ' context does not include other functions' '
 	test $(grep -c "^[ +-].*Begin" changed_hello_appended.diff) -le 2
 '
 
+check_diff changed_hello_dummy 'changed two consecutive functions'
+
+test_expect_success ' context includes begin' '
+	grep "^ .*Begin of hello" changed_hello_dummy.diff &&
+	grep "^ .*Begin of dummy" changed_hello_dummy.diff
+'
+
+test_expect_success ' context includes end' '
+	grep "^ .*End of hello" changed_hello_dummy.diff &&
+	grep "^ .*End of dummy" changed_hello_dummy.diff
+'
+
+test_expect_success ' overlapping hunks are merged' '
+	test $(grep -c "^@@" changed_hello_dummy.diff) -eq 1
+'
+
 test_done
diff --git a/t/t4062-diff-pickaxe.sh b/t/t4062-diff-pickaxe.sh
new file mode 100755
index 000000000..f0bf50bda
--- /dev/null
+++ b/t/t4062-diff-pickaxe.sh
@@ -0,0 +1,22 @@
+#!/bin/sh
+#
+# Copyright (c) 2016 Johannes Schindelin
+#
+
+test_description='Pickaxe options'
+
+. ./test-lib.sh
+
+test_expect_success setup '
+	test_commit initial &&
+	printf "%04096d" 0 >4096-zeroes.txt &&
+	git add 4096-zeroes.txt &&
+	test_tick &&
+	git commit -m "A 4k file"
+'
+test_expect_success '-G matches' '
+	git diff --name-only -G "^0{4096}$" HEAD^ >out &&
+	test 4096-zeroes.txt = "$(cat out)"
+'
+
+test_done
diff --git a/t/t5100-mailinfo.sh b/t/t5100-mailinfo.sh
index 1a5a54623..45d228ebc 100755
--- a/t/t5100-mailinfo.sh
+++ b/t/t5100-mailinfo.sh
@@ -7,8 +7,10 @@ test_description='git mailinfo and git mailsplit test'
 
 . ./test-lib.sh
 
+DATA="$TEST_DIRECTORY/t5100"
+
 test_expect_success 'split sample box' \
-	'git mailsplit -o. "$TEST_DIRECTORY"/t5100/sample.mbox >last &&
+	'git mailsplit -o. "$DATA/sample.mbox" >last &&
 	last=$(cat last) &&
 	echo total is $last &&
 	test $(cat last) = 17'
@@ -16,28 +18,28 @@ test_expect_success 'split sample box' \
 check_mailinfo () {
 	mail=$1 opt=$2
 	mo="$mail$opt"
-	git mailinfo -u $opt msg$mo patch$mo <$mail >info$mo &&
-	test_cmp "$TEST_DIRECTORY"/t5100/msg$mo msg$mo &&
-	test_cmp "$TEST_DIRECTORY"/t5100/patch$mo patch$mo &&
-	test_cmp "$TEST_DIRECTORY"/t5100/info$mo info$mo
+	git mailinfo -u $opt "msg$mo" "patch$mo" <"$mail" >"info$mo" &&
+	test_cmp "$DATA/msg$mo" "msg$mo" &&
+	test_cmp "$DATA/patch$mo" "patch$mo" &&
+	test_cmp "$DATA/info$mo" "info$mo"
 }
 
 
 for mail in 00*
 do
 	test_expect_success "mailinfo $mail" '
-		check_mailinfo $mail "" &&
-		if test -f "$TEST_DIRECTORY"/t5100/msg$mail--scissors
+		check_mailinfo "$mail" "" &&
+		if test -f "$DATA/msg$mail--scissors"
 		then
-			check_mailinfo $mail --scissors
+			check_mailinfo "$mail" --scissors
 		fi &&
-		if test -f "$TEST_DIRECTORY"/t5100/msg$mail--no-inbody-headers
+		if test -f "$DATA/msg$mail--no-inbody-headers"
 		then
-			check_mailinfo $mail --no-inbody-headers
+			check_mailinfo "$mail" --no-inbody-headers
 		fi &&
-		if test -f "$TEST_DIRECTORY"/t5100/msg$mail--message-id
+		if test -f "$DATA/msg$mail--message-id"
 		then
-			check_mailinfo $mail --message-id
+			check_mailinfo "$mail" --message-id
 		fi
 	'
 done
@@ -45,7 +47,7 @@ done
 
 test_expect_success 'split box with rfc2047 samples' \
 	'mkdir rfc2047 &&
-	git mailsplit -orfc2047 "$TEST_DIRECTORY"/t5100/rfc2047-samples.mbox \
+	git mailsplit -orfc2047 "$DATA/rfc2047-samples.mbox" \
 	  >rfc2047/last &&
 	last=$(cat rfc2047/last) &&
 	echo total is $last &&
@@ -54,20 +56,20 @@ test_expect_success 'split box with rfc2047 samples' \
 for mail in rfc2047/00*
 do
 	test_expect_success "mailinfo $mail" '
-		git mailinfo -u $mail-msg $mail-patch <$mail >$mail-info &&
+		git mailinfo -u "$mail-msg" "$mail-patch" <"$mail" >"$mail-info" &&
 		echo msg &&
-		test_cmp "$TEST_DIRECTORY"/t5100/empty $mail-msg &&
+		test_cmp "$DATA/empty" "$mail-msg" &&
 		echo patch &&
-		test_cmp "$TEST_DIRECTORY"/t5100/empty $mail-patch &&
+		test_cmp "$DATA/empty" "$mail-patch" &&
 		echo info &&
-		test_cmp "$TEST_DIRECTORY"/t5100/rfc2047-info-$(basename $mail) $mail-info
+		test_cmp "$DATA/rfc2047-info-$(basename $mail)" "$mail-info"
 	'
 done
 
 test_expect_success 'respect NULs' '
 
-	git mailsplit -d3 -o. "$TEST_DIRECTORY"/t5100/nul-plain &&
-	test_cmp "$TEST_DIRECTORY"/t5100/nul-plain 001 &&
+	git mailsplit -d3 -o. "$DATA/nul-plain" &&
+	test_cmp "$DATA/nul-plain" 001 &&
 	(cat 001 | git mailinfo msg patch) &&
 	test_line_count = 4 patch
 
@@ -75,52 +77,52 @@ test_expect_success 'respect NULs' '
 
 test_expect_success 'Preserve NULs out of MIME encoded message' '
 
-	git mailsplit -d5 -o. "$TEST_DIRECTORY"/t5100/nul-b64.in &&
-	test_cmp "$TEST_DIRECTORY"/t5100/nul-b64.in 00001 &&
+	git mailsplit -d5 -o. "$DATA/nul-b64.in" &&
+	test_cmp "$DATA/nul-b64.in" 00001 &&
 	git mailinfo msg patch <00001 &&
-	test_cmp "$TEST_DIRECTORY"/t5100/nul-b64.expect patch
+	test_cmp "$DATA/nul-b64.expect" patch
 
 '
 
 test_expect_success 'mailinfo on from header without name works' '
 
 	mkdir info-from &&
-	git mailsplit -oinfo-from "$TEST_DIRECTORY"/t5100/info-from.in &&
-	test_cmp "$TEST_DIRECTORY"/t5100/info-from.in info-from/0001 &&
+	git mailsplit -oinfo-from "$DATA/info-from.in" &&
+	test_cmp "$DATA/info-from.in" info-from/0001 &&
 	git mailinfo info-from/msg info-from/patch \
 	  <info-from/0001 >info-from/out &&
-	test_cmp "$TEST_DIRECTORY"/t5100/info-from.expect info-from/out
+	test_cmp "$DATA/info-from.expect" info-from/out
 
 '
 
 test_expect_success 'mailinfo finds headers after embedded From line' '
 	mkdir embed-from &&
-	git mailsplit -oembed-from "$TEST_DIRECTORY"/t5100/embed-from.in &&
-	test_cmp "$TEST_DIRECTORY"/t5100/embed-from.in embed-from/0001 &&
+	git mailsplit -oembed-from "$DATA/embed-from.in" &&
+	test_cmp "$DATA/embed-from.in" embed-from/0001 &&
 	git mailinfo embed-from/msg embed-from/patch \
 	  <embed-from/0001 >embed-from/out &&
-	test_cmp "$TEST_DIRECTORY"/t5100/embed-from.expect embed-from/out
+	test_cmp "$DATA/embed-from.expect" embed-from/out
 '
 
 test_expect_success 'mailinfo on message with quoted >From' '
 	mkdir quoted-from &&
-	git mailsplit -oquoted-from "$TEST_DIRECTORY"/t5100/quoted-from.in &&
-	test_cmp "$TEST_DIRECTORY"/t5100/quoted-from.in quoted-from/0001 &&
+	git mailsplit -oquoted-from "$DATA/quoted-from.in" &&
+	test_cmp "$DATA/quoted-from.in" quoted-from/0001 &&
 	git mailinfo quoted-from/msg quoted-from/patch \
 	  <quoted-from/0001 >quoted-from/out &&
-	test_cmp "$TEST_DIRECTORY"/t5100/quoted-from.expect quoted-from/msg
+	test_cmp "$DATA/quoted-from.expect" quoted-from/msg
 '
 
 test_expect_success 'mailinfo unescapes with --mboxrd' '
 	mkdir mboxrd &&
 	git mailsplit -omboxrd --mboxrd \
-		"$TEST_DIRECTORY"/t5100/sample.mboxrd >last &&
+		"$DATA/sample.mboxrd" >last &&
 	test x"$(cat last)" = x2 &&
 	for i in 0001 0002
 	do
 		git mailinfo mboxrd/msg mboxrd/patch \
 		  <mboxrd/$i >mboxrd/out &&
-		test_cmp "$TEST_DIRECTORY"/t5100/${i}mboxrd mboxrd/msg
+		test_cmp "$DATA/${i}mboxrd" mboxrd/msg
 	done &&
 	sp=" " &&
 	echo "From " >expect &&
@@ -142,4 +144,18 @@ test_expect_success 'mailinfo unescapes with --mboxrd' '
 	test_cmp expect mboxrd/msg
 '
 
+test_expect_success 'mailinfo handles rfc2822 quoted-string' '
+	mkdir quoted-string &&
+	git mailinfo /dev/null /dev/null <"$DATA/quoted-string.in" \
+		>quoted-string/info &&
+	test_cmp "$DATA/quoted-string.expect" quoted-string/info
+'
+
+test_expect_success 'mailinfo handles rfc2822 comment' '
+	mkdir comment &&
+	git mailinfo /dev/null /dev/null <"$DATA/comment.in" \
+		>comment/info &&
+	test_cmp "$DATA/comment.expect" comment/info
+'
+
 test_done
diff --git a/t/t5100/comment.expect b/t/t5100/comment.expect
new file mode 100644
index 000000000..722817798
--- /dev/null
+++ b/t/t5100/comment.expect
@@ -0,0 +1,5 @@
+Author: A U Thor (this is (really) a comment (honestly))
+Email: somebody@example.com
+Subject: testing comments
+Date: Sun, 25 May 2008 00:38:18 -0700
+
diff --git a/t/t5100/comment.in b/t/t5100/comment.in
new file mode 100644
index 000000000..c53a192df
--- /dev/null
+++ b/t/t5100/comment.in
@@ -0,0 +1,9 @@
+From 1234567890123456789012345678901234567890 Mon Sep 17 00:00:00 2001
+From: "A U Thor" <somebody@example.com> (this is \(really\) a comment (honestly))
+Date: Sun, 25 May 2008 00:38:18 -0700
+Subject: [PATCH] testing comments
+
+
+
+---
+patch
diff --git a/t/t5100/quoted-string.expect b/t/t5100/quoted-string.expect
new file mode 100644
index 000000000..cab1bcebf
--- /dev/null
+++ b/t/t5100/quoted-string.expect
@@ -0,0 +1,5 @@
+Author: Author "The Author" Name
+Email: somebody@example.com
+Subject: testing quoted-pair
+Date: Sun, 25 May 2008 00:38:18 -0700
+
diff --git a/t/t5100/quoted-string.in b/t/t5100/quoted-string.in
new file mode 100644
index 000000000..e2e627ae2
--- /dev/null
+++ b/t/t5100/quoted-string.in
@@ -0,0 +1,9 @@
+From 1234567890123456789012345678901234567890 Mon Sep 17 00:00:00 2001
+From: "Author \"The Author\" Name" <somebody@example.com>
+Date: Sun, 25 May 2008 00:38:18 -0700
+Subject: [PATCH] testing quoted-pair
+
+
+
+---
+patch
diff --git a/t/t5305-include-tag.sh b/t/t5305-include-tag.sh
index f314ad507..a5eca210b 100755
--- a/t/t5305-include-tag.sh
+++ b/t/t5305-include-tag.sh
@@ -25,58 +25,94 @@ test_expect_success setup '
 	} >obj-list
 '
 
-rm -rf clone.git
 test_expect_success 'pack without --include-tag' '
-	packname_1=$(git pack-objects \
+	packname=$(git pack-objects \
 		--window=0 \
-		test-1 <obj-list)
+		test-no-include <obj-list)
 '
 
 test_expect_success 'unpack objects' '
-	(
-		GIT_DIR=clone.git &&
-		export GIT_DIR &&
-		git init &&
-		git unpack-objects -n <test-1-${packname_1}.pack &&
-		git unpack-objects <test-1-${packname_1}.pack
-	)
+	rm -rf clone.git &&
+	git init clone.git &&
+	git -C clone.git unpack-objects <test-no-include-${packname}.pack
 '
 
 test_expect_success 'check unpacked result (have commit, no tag)' '
 	git rev-list --objects $commit >list.expect &&
-	(
-		test_must_fail env GIT_DIR=clone.git git cat-file -e $tag &&
-		git rev-list --objects $commit
-	) >list.actual &&
+	test_must_fail git -C clone.git cat-file -e $tag &&
+	git -C clone.git rev-list --objects $commit >list.actual &&
 	test_cmp list.expect list.actual
 '
 
-rm -rf clone.git
 test_expect_success 'pack with --include-tag' '
-	packname_1=$(git pack-objects \
+	packname=$(git pack-objects \
 		--window=0 \
 		--include-tag \
-		test-2 <obj-list)
+		test-include <obj-list)
 '
 
 test_expect_success 'unpack objects' '
-	(
-		GIT_DIR=clone.git &&
-		export GIT_DIR &&
-		git init &&
-		git unpack-objects -n <test-2-${packname_1}.pack &&
-		git unpack-objects <test-2-${packname_1}.pack
-	)
+	rm -rf clone.git &&
+	git init clone.git &&
+	git -C clone.git unpack-objects <test-include-${packname}.pack
 '
 
 test_expect_success 'check unpacked result (have commit, have tag)' '
 	git rev-list --objects mytag >list.expect &&
-	(
-		GIT_DIR=clone.git &&
-		export GIT_DIR &&
-		git rev-list --objects $tag
-	) >list.actual &&
+	git -C clone.git rev-list --objects $tag >list.actual &&
 	test_cmp list.expect list.actual
 '
 
+# A tag of a tag, where the "inner" tag is not otherwise
+# reachable, and a full peel points to a commit reachable from HEAD.
+test_expect_success 'create hidden inner tag' '
+	test_commit commit &&
+	git tag -m inner inner HEAD &&
+	git tag -m outer outer inner &&
+	git tag -d inner
+'
+
+test_expect_success 'pack explicit outer tag' '
+	packname=$(
+		{
+			echo HEAD &&
+			echo outer
+		} |
+		git pack-objects --revs test-hidden-explicit
+	)
+'
+
+test_expect_success 'unpack objects' '
+	rm -rf clone.git &&
+	git init clone.git &&
+	git -C clone.git unpack-objects <test-hidden-explicit-${packname}.pack
+'
+
+test_expect_success 'check unpacked result (have all objects)' '
+	git -C clone.git rev-list --objects $(git rev-parse outer HEAD)
+'
+
+test_expect_success 'pack implied outer tag' '
+	packname=$(
+		echo HEAD |
+		git pack-objects --revs --include-tag test-hidden-implied
+	)
+'
+
+test_expect_success 'unpack objects' '
+	rm -rf clone.git &&
+	git init clone.git &&
+	git -C clone.git unpack-objects <test-hidden-implied-${packname}.pack
+'
+
+test_expect_success 'check unpacked result (have all objects)' '
+	git -C clone.git rev-list --objects $(git rev-parse outer HEAD)
+'
+
+test_expect_success 'single-branch clone can transfer tag' '
+	rm -rf clone.git &&
+	git clone --no-local --single-branch -b master . clone.git &&
+	git -C clone.git fsck
+'
+
 test_done
diff --git a/t/t5526-fetch-submodules.sh b/t/t5526-fetch-submodules.sh
index 954d0e43f..f3b0a8d30 100755
--- a/t/t5526-fetch-submodules.sh
+++ b/t/t5526-fetch-submodules.sh
@@ -485,4 +485,39 @@ test_expect_success 'fetching submodules respects parallel settings' '
 	)
 '
 
+test_expect_success 'fetching submodule into a broken repository' '
+	# Prepare src and src/sub nested in it
+	git init src &&
+	(
+		cd src &&
+		git init sub &&
+		git -C sub commit --allow-empty -m "initial in sub" &&
+		git submodule add -- ./sub sub &&
+		git commit -m "initial in top"
+	) &&
+
+	# Clone the old-fashoned way
+	git clone src dst &&
+	git -C dst clone ../src/sub sub &&
+
+	# Make sure that old-fashoned layout is still supported
+	git -C dst status &&
+
+	# "diff" would find no change
+	git -C dst diff --exit-code &&
+
+	# Recursive-fetch works fine
+	git -C dst fetch --recurse-submodules &&
+
+	# Break the receiving submodule
+	rm -f dst/sub/.git/HEAD &&
+
+	# NOTE: without the fix the following tests will recurse forever!
+	# They should terminate with an error.
+
+	test_must_fail git -C dst status &&
+	test_must_fail git -C dst diff &&
+	test_must_fail git -C dst fetch --recurse-submodules
+'
+
 test_done
diff --git a/t/t5541-http-push-smart.sh b/t/t5541-http-push-smart.sh
index 4840c71f0..d38bf3247 100755
--- a/t/t5541-http-push-smart.sh
+++ b/t/t5541-http-push-smart.sh
@@ -74,7 +74,7 @@ test_expect_success 'push to remote repository (standard)' '
 	test_tick &&
 	git commit -m path2 &&
 	HEAD=$(git rev-parse --verify HEAD) &&
-	GIT_CURL_VERBOSE=1 git push -v -v 2>err &&
+	GIT_TRACE_CURL=true git push -v -v 2>err &&
 	! grep "Expect: 100-continue" err &&
 	grep "POST git-receive-pack ([0-9]* bytes)" err &&
 	(cd "$HTTPD_DOCUMENT_ROOT_PATH"/test_repo.git &&
diff --git a/t/t5550-http-fetch-dumb.sh b/t/t5550-http-fetch-dumb.sh
index 3484b6f0f..7641417b4 100755
--- a/t/t5550-http-fetch-dumb.sh
+++ b/t/t5550-http-fetch-dumb.sh
@@ -263,15 +263,15 @@ check_language () {
 		>expect
 		;;
 	?*)
-		echo "Accept-Language: $1" >expect
+		echo "=> Send header: Accept-Language: $1" >expect
 		;;
 	esac &&
-	GIT_CURL_VERBOSE=1 \
+	GIT_TRACE_CURL=true \
 	LANGUAGE=$2 \
 	git ls-remote "$HTTPD_URL/dumb/repo.git" >output 2>&1 &&
 	tr -d '\015' <output |
 	sort -u |
-	sed -ne '/^Accept-Language:/ p' >actual &&
+	sed -ne '/^=> Send header: Accept-Language:/ p' >actual &&
 	test_cmp expect actual
 }
 
@@ -295,8 +295,16 @@ ja;q=0.95, zh;q=0.94, sv;q=0.93, pt;q=0.92, nb;q=0.91, *;q=0.90" \
 '
 
 test_expect_success 'git client does not send an empty Accept-Language' '
-	GIT_CURL_VERBOSE=1 LANGUAGE= git ls-remote "$HTTPD_URL/dumb/repo.git" 2>stderr &&
-	! grep "^Accept-Language:" stderr
+	GIT_TRACE_CURL=true LANGUAGE= git ls-remote "$HTTPD_URL/dumb/repo.git" 2>stderr &&
+	! grep "^=> Send header: Accept-Language:" stderr
+'
+
+test_expect_success 'remote-http complains cleanly about malformed urls' '
+	# do not actually issue "list" or other commands, as we do not
+	# want to rely on what curl would actually do with such a broken
+	# URL. This is just about making sure we do not segfault during
+	# initialization.
+	test_must_fail git remote-http http::/example.com/repo.git
 '
 
 stop_httpd
diff --git a/t/t5551-http-fetch-smart.sh b/t/t5551-http-fetch-smart.sh
index 2f375eb94..1ec5b2747 100755
--- a/t/t5551-http-fetch-smart.sh
+++ b/t/t5551-http-fetch-smart.sh
@@ -43,12 +43,21 @@ cat >exp <<EOF
 < Content-Type: application/x-git-upload-pack-result
 EOF
 test_expect_success 'clone http repository' '
-	GIT_CURL_VERBOSE=1 git clone --quiet $HTTPD_URL/smart/repo.git clone 2>err &&
+	GIT_TRACE_CURL=true git clone --quiet $HTTPD_URL/smart/repo.git clone 2>err &&
 	test_cmp file clone/file &&
 	tr '\''\015'\'' Q <err |
 	sed -e "
 		s/Q\$//
 		/^[*] /d
+		/^== Info:/d
+		/^=> Send header, /d
+		/^=> Send header:$/d
+		/^<= Recv header, /d
+		/^<= Recv header:$/d
+		s/=> Send header: //
+		s/= Recv header://
+		/^<= Recv data/d
+		/^=> Send data/d
 		/^$/d
 		/^< $/d
 
@@ -261,9 +270,9 @@ test_expect_success CMDLINE_LIMIT \
 '
 
 test_expect_success 'large fetch-pack requests can be split across POSTs' '
-	GIT_CURL_VERBOSE=1 git -c http.postbuffer=65536 \
+	GIT_TRACE_CURL=true git -c http.postbuffer=65536 \
 		clone --bare "$HTTPD_URL/smart/repo.git" split.git 2>err &&
-	grep "^> POST" err >posts &&
+	grep "^=> Send header: POST" err >posts &&
 	test_line_count = 2 posts
 '
 
diff --git a/t/t6026-merge-attr.sh b/t/t6026-merge-attr.sh
index dd8f88d18..7a6e33e67 100755
--- a/t/t6026-merge-attr.sh
+++ b/t/t6026-merge-attr.sh
@@ -185,7 +185,9 @@ test_expect_success 'custom merge does not lock index' '
 	git reset --hard anchor &&
 	write_script sleep-one-second.sh <<-\EOF &&
 		sleep 1 &
+		echo $! >sleep.pid
 	EOF
+	test_when_finished "kill \$(cat sleep.pid)" &&
 
 	test_write_lines >.gitattributes \
 		"* merge=ours" "text merge=sleep-one-second" &&
diff --git a/t/t7517-per-repo-email.sh b/t/t7517-per-repo-email.sh
index 337e6e30c..2a22fa758 100755
--- a/t/t7517-per-repo-email.sh
+++ b/t/t7517-per-repo-email.sh
@@ -36,4 +36,51 @@ test_expect_success 'succeeds cloning if global email is not set' '
 	git clone . clone
 '
 
+test_expect_success 'set up rebase scenarios' '
+	# temporarily enable an actual ident for this setup
+	test_config user.email foo@example.com &&
+	test_commit new &&
+	git branch side-without-commit HEAD^ &&
+	git checkout -b side-with-commit HEAD^ &&
+	test_commit side
+'
+
+test_expect_success 'fast-forward rebase does not care about ident' '
+	git checkout -B tmp side-without-commit &&
+	git rebase master
+'
+
+test_expect_success 'non-fast-forward rebase refuses to write commits' '
+	test_when_finished "git rebase --abort || true" &&
+	git checkout -B tmp side-with-commit &&
+	test_must_fail git rebase master
+'
+
+test_expect_success 'fast-forward rebase does not care about ident (interactive)' '
+	git checkout -B tmp side-without-commit &&
+	git rebase -i master
+'
+
+test_expect_success 'non-fast-forward rebase refuses to write commits (interactive)' '
+	test_when_finished "git rebase --abort || true" &&
+	git checkout -B tmp side-with-commit &&
+	test_must_fail git rebase -i master
+'
+
+test_expect_success 'noop interactive rebase does not care about ident' '
+	git checkout -B tmp side-with-commit &&
+	git rebase -i HEAD^
+'
+
+test_expect_success 'fast-forward rebase does not care about ident (preserve)' '
+	git checkout -B tmp side-without-commit &&
+	git rebase -p master
+'
+
+test_expect_success 'non-fast-forward rebase refuses to write commits (preserve)' '
+	test_when_finished "git rebase --abort || true" &&
+	git checkout -B tmp side-with-commit &&
+	test_must_fail git rebase -p master
+'
+
 test_done
diff --git a/t/t9903-bash-prompt.sh b/t/t9903-bash-prompt.sh
index 0db4469c8..97c9b32c2 100755
--- a/t/t9903-bash-prompt.sh
+++ b/t/t9903-bash-prompt.sh
@@ -177,7 +177,7 @@ test_expect_success 'prompt - interactive rebase' '
 	git checkout b1 &&
 	test_when_finished "git checkout master" &&
 	git rebase -i HEAD^ &&
-	test_when_finished "git rebase --abort"
+	test_when_finished "git rebase --abort" &&
 	__git_ps1 >"$actual" &&
 	test_cmp expected "$actual"
 '
diff --git a/t/test-lib.sh b/t/test-lib.sh
index d731d66e3..ac56512a1 100644
--- a/t/test-lib.sh
+++ b/t/test-lib.sh
@@ -89,6 +89,7 @@ unset VISUAL EMAIL LANGUAGE COLUMNS $("$PERL_PATH" -e '
 		UNZIP
 		PERF_
 		CURL_VERBOSE
+		TRACE_CURL
 	));
 	my @vars = grep(/^GIT_/ && !/^GIT_($ok)/o, @env);
 	print join("\n", @vars);
@@ -687,9 +688,9 @@ test_done () {
 		test_results_dir="$TEST_OUTPUT_DIRECTORY/test-results"
 		mkdir -p "$test_results_dir"
 		base=${0##*/}
-		test_results_path="$test_results_dir/${base%.sh}-$$.counts"
+		test_results_path="$test_results_dir/${base%.sh}.counts"
 
-		cat >>"$test_results_path" <<-EOF
+		cat >"$test_results_path" <<-EOF
 		total $test_count
 		success $test_success
 		fixed $test_fixed