Re: [PATCH] Rename ".dotest/" to ".git/rebase" and ".dotest-merge" to "rebase-merge"

[Junio C Hamano <gitster@pobox.com>]

Theodore Tso <tytso@mit.edu> writes:

> While you have "git am" open, how about adding an "git am --abort"
> which nukes the .dotest aka .git/rebase directory, and resets HEAD
> back to the original position?

This does not seem to have reached the list nor its archives.  I cannot
say I have really looked at it deeply but it may be a good starting
point.  It needs docs ;-)

-- >8 --
From: Nanako Shiraishi <nanako3@lavabit.com>
Date: Wed, 16 Jul 2008 19:39:10 +0900
Subject: [PATCH] git am --abort

After failing to apply patches in the middle of a series, "git am --abort"
lets you go back to the original commit.

Signed-off-by: Nanako Shiraishi <nanako3@lavabit.com>
---
 git-am.sh           |   19 +++++++++++++++----
 t/t4151-am-abort.sh |   48 ++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 63 insertions(+), 4 deletions(-)
 create mode 100755 t/t4151-am-abort.sh

diff --git a/git-am.sh b/git-am.sh
index cc8787b..a44bd7a 100755
--- a/git-am.sh
+++ b/git-am.sh
@@ -22,6 +22,7 @@ p=              pass it through git-apply
 resolvemsg=     override error message when patch failure occurs
 r,resolved      to be used after a patch failure
 skip            skip the current patch
+abort           abandon patch application and clear .dotest directory
 rebasing        (internal use for git-rebase)"
 
 . git-sh-setup
@@ -120,7 +121,7 @@ It does not apply to blobs recorded in its index."
 
 prec=4
 dotest="$GIT_DIR/rebase"
-sign= utf8=t keep= skip= interactive= resolved= binary= rebasing=
+sign= utf8=t keep= skip= interactive= resolved= binary= rebasing= abort=
 resolvemsg= resume=
 git_apply_opt=
 
@@ -145,6 +146,8 @@ do
 		resolved=t ;;
 	--skip)
 		skip=t ;;
+	--abort)
+		abort=t ;;
 	--rebasing)
 		rebasing=t threeway=t keep=t binary=t ;;
 	-d|--dotest)
@@ -177,7 +180,7 @@ fi
 
 if test -d "$dotest"
 then
-	case "$#,$skip$resolved" in
+	case "$#,$skip$resolved$abort" in
 	0,*t*)
 		# Explicit resume command and we do not have file, so
 		# we are happy.
@@ -197,9 +200,17 @@ then
 	esac ||
 	die "previous rebase directory $dotest still exists but mbox given."
 	resume=yes
+
+	case "$abort" in
+	t)
+		rm -fr "$dotest" &&
+		git read-tree -m -u ORIG_HEAD &&
+		git reset ORIG_HEAD && :
+		exit ;;
+	esac
 else
-	# Make sure we are not given --skip nor --resolved
-	test ",$skip,$resolved," = ,,, ||
+	# Make sure we are not given --skip, --resolved, nor --abort
+	test "$skip$resolved$abort" = "" ||
 		die "Resolve operation not in progress, we are not resuming."
 
 	# Start afresh.
diff --git a/t/t4151-am-abort.sh b/t/t4151-am-abort.sh
new file mode 100755
index 0000000..96b2cd5
--- /dev/null
+++ b/t/t4151-am-abort.sh
@@ -0,0 +1,48 @@
+#!/bin/sh
+
+test_description='am --abort'
+
+. ./test-lib.sh
+
+test_expect_success setup '
+	for i in a b c d e f g
+	do
+		echo $i
+	done >file-1 &&
+	cp file-1 file-2 &&
+	test_tick &&
+	git add file-1 file-2 &&
+	git commit -m initial &&
+	git tag initial &&
+	for i in 2 3 4 5
+	do
+		echo $i >>file-1 &&
+		test_tick &&
+		git commit -a -m $i || break
+	done &&
+	git format-patch initial &&
+	git checkout -b side initial &&
+	echo local change >file-2 &&
+	cp file-2 file-2-expect
+'
+
+test_expect_success 'am stops at a patch that does not apply' '
+	test_must_fail git am 000[124]-*.patch &&
+	git log --pretty=tformat:%s >actual &&
+	for i in 3 2 initial
+	do
+		echo $i
+	done >expect &&
+	test_cmp expect actual
+'
+
+test_expect_success 'am --abort goes back' '
+	git am --abort &&
+	git rev-parse HEAD >actual &&
+	git rev-parse initial >expect &&
+	test_cmp expect actual &&
+	test_cmp file-2-expect file-2 &&
+	git diff-index --exit-code --cached HEAD
+'
+
+test_done
-- 
1.5.6