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, 112 insertions, 0 deletions

diff --git a/t/t5710-info-alternate.sh b/t/t5710-info-alternate.sh
new file mode 100755
index 0000000000..ef7127c1b3
--- /dev/null
+++ b/t/t5710-info-alternate.sh
@@ -0,0 +1,112 @@
+#!/bin/sh
+#
+# Copyright (C) 2006 Martin Waitz <tali@admingilde.org>
+#
+
+test_description='test transitive info/alternate entries'
+. ./test-lib.sh
+
+# test that a file is not reachable in the current repository
+# but that it is after creating a info/alternate entry
+reachable_via() {
+	alternate="$1"
+	file="$2"
+	if git cat-file -e "HEAD:$file"; then return 1; fi
+	echo "$alternate" >> .git/objects/info/alternate
+	git cat-file -e "HEAD:$file"
+}
+
+test_valid_repo() {
+	git fsck --full > fsck.log &&
+	test `wc -l < fsck.log` = 0
+}
+
+base_dir=`pwd`
+
+test_expect_success 'preparing first repository' \
+'test_create_repo A && cd A &&
+echo "Hello World" > file1 &&
+git add file1 &&
+git commit -m "Initial commit" file1 &&
+git repack -a -d &&
+git prune'
+
+cd "$base_dir"
+
+test_expect_success 'preparing second repository' \
+'git clone -l -s A B && cd B &&
+echo "foo bar" > file2 &&
+git add file2 &&
+git commit -m "next commit" file2 &&
+git repack -a -d -l &&
+git prune'
+
+cd "$base_dir"
+
+test_expect_success 'preparing third repository' \
+'git clone -l -s B C && cd C &&
+echo "Goodbye, cruel world" > file3 &&
+git add file3 &&
+git commit -m "one more" file3 &&
+git repack -a -d -l &&
+git prune'
+
+cd "$base_dir"
+
+test_expect_success 'creating too deep nesting' \
+'git clone -l -s C D &&
+git clone -l -s D E &&
+git clone -l -s E F &&
+git clone -l -s F G &&
+git clone -l -s G H'
+
+test_expect_success 'invalidity of deepest repository' \
+'cd H && {
+	test_valid_repo
+	test $? -ne 0
+}'
+
+cd "$base_dir"
+
+test_expect_success 'validity of third repository' \
+'cd C &&
+test_valid_repo'
+
+cd "$base_dir"
+
+test_expect_success 'validity of fourth repository' \
+'cd D &&
+test_valid_repo'
+
+cd "$base_dir"
+
+test_expect_success 'breaking of loops' \
+'echo "$base_dir"/B/.git/objects >> "$base_dir"/A/.git/objects/info/alternates&&
+cd C &&
+test_valid_repo'
+
+cd "$base_dir"
+
+test_expect_success 'that info/alternates is necessary' \
+'cd C &&
+rm -f .git/objects/info/alternates &&
+! (test_valid_repo)'
+
+cd "$base_dir"
+
+test_expect_success 'that relative alternate is possible for current dir' \
+'cd C &&
+echo "../../../B/.git/objects" > .git/objects/info/alternates &&
+test_valid_repo'
+
+cd "$base_dir"
+
+test_expect_success \
+    'that relative alternate is only possible for current dir' '
+    cd D &&
+    ! (test_valid_repo)
+'
+
+cd "$base_dir"
+
+test_done