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, 494 insertions, 0 deletions

diff --git a/t/t7102-reset.sh b/t/t7102-reset.sh
new file mode 100755
index 0000000000..b096dc88c2
--- /dev/null
+++ b/t/t7102-reset.sh
@@ -0,0 +1,494 @@
+#!/bin/sh
+#
+# Copyright (c) 2007 Carlos Rica
+#
+
+test_description='git reset
+
+Documented tests for git reset'
+
+. ./test-lib.sh
+
+test_expect_success 'creating initial files and commits' '
+	test_tick &&
+	echo "1st file" >first &&
+	git add first &&
+	git commit -m "create 1st file" &&
+
+	echo "2nd file" >second &&
+	git add second &&
+	git commit -m "create 2nd file" &&
+
+	echo "2nd line 1st file" >>first &&
+	git commit -a -m "modify 1st file" &&
+
+	git rm first &&
+	git mv second secondfile &&
+	git commit -a -m "remove 1st and rename 2nd" &&
+
+	echo "1st line 2nd file" >secondfile &&
+	echo "2nd line 2nd file" >>secondfile &&
+	git commit -a -m "modify 2nd file"
+'
+# git log --pretty=oneline # to see those SHA1 involved
+
+check_changes () {
+	test "$(git rev-parse HEAD)" = "$1" &&
+	git diff | test_cmp .diff_expect - &&
+	git diff --cached | test_cmp .cached_expect - &&
+	for FILE in *
+	do
+		echo $FILE':'
+		cat $FILE || return
+	done | test_cmp .cat_expect -
+}
+
+>.diff_expect
+>.cached_expect
+cat >.cat_expect <<EOF
+secondfile:
+1st line 2nd file
+2nd line 2nd file
+EOF
+
+test_expect_success 'giving a non existing revision should fail' '
+	test_must_fail git reset aaaaaa &&
+	test_must_fail git reset --mixed aaaaaa &&
+	test_must_fail git reset --soft aaaaaa &&
+	test_must_fail git reset --hard aaaaaa &&
+	check_changes 3ec39651e7f44ea531a5de18a9fa791c0fd370fc
+'
+
+test_expect_success 'reset --soft with unmerged index should fail' '
+	touch .git/MERGE_HEAD &&
+	echo "100644 44c5b5884550c17758737edcced463447b91d42b 1	un" |
+		git update-index --index-info &&
+	test_must_fail git reset --soft HEAD &&
+	rm .git/MERGE_HEAD &&
+	git rm --cached -- un
+'
+
+test_expect_success \
+	'giving paths with options different than --mixed should fail' '
+	test_must_fail git reset --soft -- first &&
+	test_must_fail git reset --hard -- first &&
+	test_must_fail git reset --soft HEAD^ -- first &&
+	test_must_fail git reset --hard HEAD^ -- first &&
+	check_changes 3ec39651e7f44ea531a5de18a9fa791c0fd370fc
+'
+
+test_expect_success 'giving unrecognized options should fail' '
+	test_must_fail git reset --other &&
+	test_must_fail git reset -o &&
+	test_must_fail git reset --mixed --other &&
+	test_must_fail git reset --mixed -o &&
+	test_must_fail git reset --soft --other &&
+	test_must_fail git reset --soft -o &&
+	test_must_fail git reset --hard --other &&
+	test_must_fail git reset --hard -o &&
+	check_changes 3ec39651e7f44ea531a5de18a9fa791c0fd370fc
+'
+
+test_expect_success \
+	'trying to do reset --soft with pending merge should fail' '
+	git branch branch1 &&
+	git branch branch2 &&
+
+	git checkout branch1 &&
+	echo "3rd line in branch1" >>secondfile &&
+	git commit -a -m "change in branch1" &&
+
+	git checkout branch2 &&
+	echo "3rd line in branch2" >>secondfile &&
+	git commit -a -m "change in branch2" &&
+
+	test_must_fail git merge branch1 &&
+	test_must_fail git reset --soft &&
+
+	printf "1st line 2nd file\n2nd line 2nd file\n3rd line" >secondfile &&
+	git commit -a -m "the change in branch2" &&
+
+	git checkout master &&
+	git branch -D branch1 branch2 &&
+	check_changes 3ec39651e7f44ea531a5de18a9fa791c0fd370fc
+'
+
+test_expect_success \
+	'trying to do reset --soft with pending checkout merge should fail' '
+	git branch branch3 &&
+	git branch branch4 &&
+
+	git checkout branch3 &&
+	echo "3rd line in branch3" >>secondfile &&
+	git commit -a -m "line in branch3" &&
+
+	git checkout branch4 &&
+	echo "3rd line in branch4" >>secondfile &&
+
+	git checkout -m branch3 &&
+	test_must_fail git reset --soft &&
+
+	printf "1st line 2nd file\n2nd line 2nd file\n3rd line" >secondfile &&
+	git commit -a -m "the line in branch3" &&
+
+	git checkout master &&
+	git branch -D branch3 branch4 &&
+	check_changes 3ec39651e7f44ea531a5de18a9fa791c0fd370fc
+'
+
+test_expect_success \
+	'resetting to HEAD with no changes should succeed and do nothing' '
+	git reset --hard &&
+		check_changes 3ec39651e7f44ea531a5de18a9fa791c0fd370fc &&
+	git reset --hard HEAD &&
+		check_changes 3ec39651e7f44ea531a5de18a9fa791c0fd370fc &&
+	git reset --soft &&
+		check_changes 3ec39651e7f44ea531a5de18a9fa791c0fd370fc &&
+	git reset --soft HEAD &&
+		check_changes 3ec39651e7f44ea531a5de18a9fa791c0fd370fc &&
+	git reset --mixed &&
+		check_changes 3ec39651e7f44ea531a5de18a9fa791c0fd370fc &&
+	git reset --mixed HEAD &&
+		check_changes 3ec39651e7f44ea531a5de18a9fa791c0fd370fc &&
+	git reset &&
+		check_changes 3ec39651e7f44ea531a5de18a9fa791c0fd370fc &&
+	git reset HEAD &&
+		check_changes 3ec39651e7f44ea531a5de18a9fa791c0fd370fc
+'
+
+>.diff_expect
+cat >.cached_expect <<EOF
+diff --git a/secondfile b/secondfile
+index 1bbba79..44c5b58 100644
+--- a/secondfile
++++ b/secondfile
+@@ -1 +1,2 @@
+-2nd file
++1st line 2nd file
++2nd line 2nd file
+EOF
+cat >.cat_expect <<EOF
+secondfile:
+1st line 2nd file
+2nd line 2nd file
+EOF
+test_expect_success '--soft reset only should show changes in diff --cached' '
+	git reset --soft HEAD^ &&
+	check_changes d1a4bc3abce4829628ae2dcb0d60ef3d1a78b1c4 &&
+	test "$(git rev-parse ORIG_HEAD)" = \
+			3ec39651e7f44ea531a5de18a9fa791c0fd370fc
+'
+
+>.diff_expect
+>.cached_expect
+cat >.cat_expect <<EOF
+secondfile:
+1st line 2nd file
+2nd line 2nd file
+3rd line 2nd file
+EOF
+test_expect_success \
+	'changing files and redo the last commit should succeed' '
+	echo "3rd line 2nd file" >>secondfile &&
+	git commit -a -C ORIG_HEAD &&
+	check_changes 3d3b7be011a58ca0c179ae45d94e6c83c0b0cd0d &&
+	test "$(git rev-parse ORIG_HEAD)" = \
+			3ec39651e7f44ea531a5de18a9fa791c0fd370fc
+'
+
+>.diff_expect
+>.cached_expect
+cat >.cat_expect <<EOF
+first:
+1st file
+2nd line 1st file
+second:
+2nd file
+EOF
+test_expect_success \
+	'--hard reset should change the files and undo commits permanently' '
+	git reset --hard HEAD~2 &&
+	check_changes ddaefe00f1da16864591c61fdc7adb5d7cd6b74e &&
+	test "$(git rev-parse ORIG_HEAD)" = \
+			3d3b7be011a58ca0c179ae45d94e6c83c0b0cd0d
+'
+
+>.diff_expect
+cat >.cached_expect <<EOF
+diff --git a/first b/first
+deleted file mode 100644
+index 8206c22..0000000
+--- a/first
++++ /dev/null
+@@ -1,2 +0,0 @@
+-1st file
+-2nd line 1st file
+diff --git a/second b/second
+deleted file mode 100644
+index 1bbba79..0000000
+--- a/second
++++ /dev/null
+@@ -1 +0,0 @@
+-2nd file
+diff --git a/secondfile b/secondfile
+new file mode 100644
+index 0000000..44c5b58
+--- /dev/null
++++ b/secondfile
+@@ -0,0 +1,2 @@
++1st line 2nd file
++2nd line 2nd file
+EOF
+cat >.cat_expect <<EOF
+secondfile:
+1st line 2nd file
+2nd line 2nd file
+EOF
+test_expect_success \
+	'redoing changes adding them without commit them should succeed' '
+	git rm first &&
+	git mv second secondfile &&
+
+	echo "1st line 2nd file" >secondfile &&
+	echo "2nd line 2nd file" >>secondfile &&
+	git add secondfile &&
+	check_changes ddaefe00f1da16864591c61fdc7adb5d7cd6b74e
+'
+
+cat >.diff_expect <<EOF
+diff --git a/first b/first
+deleted file mode 100644
+index 8206c22..0000000
+--- a/first
++++ /dev/null
+@@ -1,2 +0,0 @@
+-1st file
+-2nd line 1st file
+diff --git a/second b/second
+deleted file mode 100644
+index 1bbba79..0000000
+--- a/second
++++ /dev/null
+@@ -1 +0,0 @@
+-2nd file
+EOF
+>.cached_expect
+cat >.cat_expect <<EOF
+secondfile:
+1st line 2nd file
+2nd line 2nd file
+EOF
+test_expect_success '--mixed reset to HEAD should unadd the files' '
+	git reset &&
+	check_changes ddaefe00f1da16864591c61fdc7adb5d7cd6b74e &&
+	test "$(git rev-parse ORIG_HEAD)" = \
+			ddaefe00f1da16864591c61fdc7adb5d7cd6b74e
+'
+
+>.diff_expect
+>.cached_expect
+cat >.cat_expect <<EOF
+secondfile:
+1st line 2nd file
+2nd line 2nd file
+EOF
+test_expect_success 'redoing the last two commits should succeed' '
+	git add secondfile &&
+	git reset --hard ddaefe00f1da16864591c61fdc7adb5d7cd6b74e &&
+
+	git rm first &&
+	git mv second secondfile &&
+	git commit -a -m "remove 1st and rename 2nd" &&
+
+	echo "1st line 2nd file" >secondfile &&
+	echo "2nd line 2nd file" >>secondfile &&
+	git commit -a -m "modify 2nd file" &&
+	check_changes 3ec39651e7f44ea531a5de18a9fa791c0fd370fc
+'
+
+>.diff_expect
+>.cached_expect
+cat >.cat_expect <<EOF
+secondfile:
+1st line 2nd file
+2nd line 2nd file
+3rd line in branch2
+EOF
+test_expect_success '--hard reset to HEAD should clear a failed merge' '
+	git branch branch1 &&
+	git branch branch2 &&
+
+	git checkout branch1 &&
+	echo "3rd line in branch1" >>secondfile &&
+	git commit -a -m "change in branch1" &&
+
+	git checkout branch2 &&
+	echo "3rd line in branch2" >>secondfile &&
+	git commit -a -m "change in branch2" &&
+
+	test_must_fail git pull . branch1 &&
+	git reset --hard &&
+	check_changes 77abb337073fb4369a7ad69ff6f5ec0e4d6b54bb
+'
+
+>.diff_expect
+>.cached_expect
+cat >.cat_expect <<EOF
+secondfile:
+1st line 2nd file
+2nd line 2nd file
+EOF
+test_expect_success \
+	'--hard reset to ORIG_HEAD should clear a fast-forward merge' '
+	git reset --hard HEAD^ &&
+	check_changes 3ec39651e7f44ea531a5de18a9fa791c0fd370fc &&
+
+	git pull . branch1 &&
+	git reset --hard ORIG_HEAD &&
+	check_changes 3ec39651e7f44ea531a5de18a9fa791c0fd370fc &&
+
+	git checkout master &&
+	git branch -D branch1 branch2 &&
+	check_changes 3ec39651e7f44ea531a5de18a9fa791c0fd370fc
+'
+
+cat > expect << EOF
+diff --git a/file1 b/file1
+index d00491f..7ed6ff8 100644
+--- a/file1
++++ b/file1
+@@ -1 +1 @@
+-1
++5
+diff --git a/file2 b/file2
+deleted file mode 100644
+index 0cfbf08..0000000
+--- a/file2
++++ /dev/null
+@@ -1 +0,0 @@
+-2
+EOF
+cat > cached_expect << EOF
+diff --git a/file4 b/file4
+new file mode 100644
+index 0000000..b8626c4
+--- /dev/null
++++ b/file4
+@@ -0,0 +1 @@
++4
+EOF
+test_expect_success 'test --mixed <paths>' '
+	echo 1 > file1 &&
+	echo 2 > file2 &&
+	git add file1 file2 &&
+	test_tick &&
+	git commit -m files &&
+	git rm file2 &&
+	echo 3 > file3 &&
+	echo 4 > file4 &&
+	echo 5 > file1 &&
+	git add file1 file3 file4 &&
+	test_must_fail git reset HEAD -- file1 file2 file3 &&
+	git diff > output &&
+	test_cmp output expect &&
+	git diff --cached > output &&
+	test_cmp output cached_expect
+'
+
+test_expect_success 'test resetting the index at give paths' '
+
+	mkdir sub &&
+	>sub/file1 &&
+	>sub/file2 &&
+	git update-index --add sub/file1 sub/file2 &&
+	T=$(git write-tree) &&
+	test_must_fail git reset HEAD sub/file2 &&
+	U=$(git write-tree) &&
+	echo "$T" &&
+	echo "$U" &&
+	test_must_fail git diff-index --cached --exit-code "$T" &&
+	test "$T" != "$U"
+
+'
+
+test_expect_success 'resetting an unmodified path is a no-op' '
+	git reset --hard &&
+	git reset -- file1 &&
+	git diff-files --exit-code &&
+	git diff-index --cached --exit-code HEAD
+'
+
+cat > expect << EOF
+Unstaged changes after reset:
+M	file2
+EOF
+
+test_expect_success '--mixed refreshes the index' '
+	echo 123 >> file2 &&
+	git reset --mixed HEAD > output &&
+	test_i18ncmp expect output
+'
+
+test_expect_success 'resetting specific path that is unmerged' '
+	git rm --cached file2 &&
+	F1=$(git rev-parse HEAD:file1) &&
+	F2=$(git rev-parse HEAD:file2) &&
+	F3=$(git rev-parse HEAD:secondfile) &&
+	{
+		echo "100644 $F1 1	file2" &&
+		echo "100644 $F2 2	file2" &&
+		echo "100644 $F3 3	file2"
+	} | git update-index --index-info &&
+	git ls-files -u &&
+	test_must_fail git reset HEAD file2 &&
+	git diff-index --exit-code --cached HEAD
+'
+
+test_expect_success 'disambiguation (1)' '
+
+	git reset --hard &&
+	>secondfile &&
+	git add secondfile &&
+	test_must_fail git reset secondfile &&
+	test -z "$(git diff --cached --name-only)" &&
+	test -f secondfile &&
+	test ! -s secondfile
+
+'
+
+test_expect_success 'disambiguation (2)' '
+
+	git reset --hard &&
+	>secondfile &&
+	git add secondfile &&
+	rm -f secondfile &&
+	test_must_fail git reset secondfile &&
+	test -n "$(git diff --cached --name-only -- secondfile)" &&
+	test ! -f secondfile
+
+'
+
+test_expect_success 'disambiguation (3)' '
+
+	git reset --hard &&
+	>secondfile &&
+	git add secondfile &&
+	rm -f secondfile &&
+	test_must_fail git reset HEAD secondfile &&
+	test -z "$(git diff --cached --name-only)" &&
+	test ! -f secondfile
+
+'
+
+test_expect_success 'disambiguation (4)' '
+
+	git reset --hard &&
+	>secondfile &&
+	git add secondfile &&
+	rm -f secondfile &&
+	test_must_fail git reset -- secondfile &&
+	test -z "$(git diff --cached --name-only)" &&
+	test ! -f secondfile
+'
+
+test_done