Merge branch 'maint' into tj/imap-send-remove-unused

* maint: (18123 commits)
  documentation fix: git difftool uses diff tools, not merge tools.
  Git 1.7.7.4
  Makefile: add missing header file dependencies
  notes merge: eliminate OUTPUT macro
  mailmap: xcalloc mailmap_info
  name-rev --all: do not even attempt to describe non-commit object
  Git 1.7.7.3
  docs: Update install-doc-quick
  docs: don't mention --quiet or --exit-code in git-log(1)
  Git 1.7.7.2
  t7511: avoid use of reserved filename on Windows.
  clone: Quote user supplied path in a single quote pair
  read-cache.c: fix index memory allocation
  make the sample pre-commit hook script reject names with newlines, too
  Reindent closing bracket using tab instead of spaces
  Git 1.7.7.1
  RelNotes/1.7.7.1: setgid bit patch is about fixing "git init" via Makefile setting
  gitweb: fix regression when filtering out forks
  Almost ready for 1.7.7.1
  pack-objects: don't traverse objects unnecessarily
  ...

Conflicts:
	imap-send.c

1 files changed, 166 insertions, 0 deletions

diff --git a/t/t5503-tagfollow.sh b/t/t5503-tagfollow.sh
new file mode 100755
index 0000000000..60de2d6ede
--- /dev/null
+++ b/t/t5503-tagfollow.sh
@@ -0,0 +1,166 @@
+#!/bin/sh
+
+test_description='test automatic tag following'
+
+. ./test-lib.sh
+
+if ! test_have_prereq NOT_MINGW; then
+	say "GIT_DEBUG_SEND_PACK not supported - skipping tests"
+fi
+
+# End state of the repository:
+#
+#         T - tag1          S - tag2
+#        /                 /
+#   L - A ------ O ------ B
+#    \   \                 \
+#     \   C - origin/cat    \
+#      origin/master         master
+
+test_expect_success NOT_MINGW setup '
+	test_tick &&
+	echo ichi >file &&
+	git add file &&
+	git commit -m L &&
+	L=$(git rev-parse --verify HEAD) &&
+
+	(
+		mkdir cloned &&
+		cd cloned &&
+		git init-db &&
+		git remote add -f origin ..
+	) &&
+
+	test_tick &&
+	echo A >file &&
+	git add file &&
+	git commit -m A &&
+	A=$(git rev-parse --verify HEAD)
+'
+
+U=UPLOAD_LOG
+
+test_expect_success NOT_MINGW 'setup expect' '
+cat - <<EOF >expect
+#S
+want $A
+#E
+EOF
+'
+
+test_expect_success NOT_MINGW 'fetch A (new commit : 1 connection)' '
+	rm -f $U &&
+	(
+		cd cloned &&
+		GIT_DEBUG_SEND_PACK=3 git fetch 3>../$U &&
+		test $A = $(git rev-parse --verify origin/master)
+	) &&
+	test -s $U &&
+	cut -d" " -f1,2 $U >actual &&
+	test_cmp expect actual
+'
+
+test_expect_success NOT_MINGW "create tag T on A, create C on branch cat" '
+	git tag -a -m tag1 tag1 $A &&
+	T=$(git rev-parse --verify tag1) &&
+
+	git checkout -b cat &&
+	echo C >file &&
+	git add file &&
+	git commit -m C &&
+	C=$(git rev-parse --verify HEAD) &&
+	git checkout master
+'
+
+test_expect_success NOT_MINGW 'setup expect' '
+cat - <<EOF >expect
+#S
+want $C
+want $T
+#E
+EOF
+'
+
+test_expect_success NOT_MINGW 'fetch C, T (new branch, tag : 1 connection)' '
+	rm -f $U &&
+	(
+		cd cloned &&
+		GIT_DEBUG_SEND_PACK=3 git fetch 3>../$U &&
+		test $C = $(git rev-parse --verify origin/cat) &&
+		test $T = $(git rev-parse --verify tag1) &&
+		test $A = $(git rev-parse --verify tag1^0)
+	) &&
+	test -s $U &&
+	cut -d" " -f1,2 $U >actual &&
+	test_cmp expect actual
+'
+
+test_expect_success NOT_MINGW "create commits O, B, tag S on B" '
+	test_tick &&
+	echo O >file &&
+	git add file &&
+	git commit -m O &&
+
+	test_tick &&
+	echo B >file &&
+	git add file &&
+	git commit -m B &&
+	B=$(git rev-parse --verify HEAD) &&
+
+	git tag -a -m tag2 tag2 $B &&
+	S=$(git rev-parse --verify tag2)
+'
+
+test_expect_success NOT_MINGW 'setup expect' '
+cat - <<EOF >expect
+#S
+want $B
+want $S
+#E
+EOF
+'
+
+test_expect_success NOT_MINGW 'fetch B, S (commit and tag : 1 connection)' '
+	rm -f $U &&
+	(
+		cd cloned &&
+		GIT_DEBUG_SEND_PACK=3 git fetch 3>../$U &&
+		test $B = $(git rev-parse --verify origin/master) &&
+		test $B = $(git rev-parse --verify tag2^0) &&
+		test $S = $(git rev-parse --verify tag2)
+	) &&
+	test -s $U &&
+	cut -d" " -f1,2 $U >actual &&
+	test_cmp expect actual
+'
+
+test_expect_success NOT_MINGW 'setup expect' '
+cat - <<EOF >expect
+#S
+want $B
+want $S
+#E
+EOF
+'
+
+test_expect_success NOT_MINGW 'new clone fetch master and tags' '
+	git branch -D cat
+	rm -f $U
+	(
+		mkdir clone2 &&
+		cd clone2 &&
+		git init &&
+		git remote add origin .. &&
+		GIT_DEBUG_SEND_PACK=3 git fetch 3>../$U &&
+		test $B = $(git rev-parse --verify origin/master) &&
+		test $S = $(git rev-parse --verify tag2) &&
+		test $B = $(git rev-parse --verify tag2^0) &&
+		test $T = $(git rev-parse --verify tag1) &&
+		test $A = $(git rev-parse --verify tag1^0)
+	) &&
+	test -s $U &&
+	cut -d" " -f1,2 $U >actual &&
+	test_cmp expect actual
+'
+
+test_done