[PATCH v4 5/5] rebase: fix format.useAutoBase breakage

From: Denton Liu <liu.denton@gmail.com>
To: Git Mailing List <git@vger.kernel.org>
Cc: "Christian Biesinger" <cbiesinger@google.com>,
	"Eric Sunshine" <sunshine@sunshineco.com>,
	"Junio C Hamano" <gitster@pobox.com>,
	"René Scharfe" <l.s.r@web.de>
Subject: [PATCH v4 5/5] rebase: fix format.useAutoBase breakage
Date: Wed, 4 Dec 2019 13:25:11 -0800	[thread overview]
Message-ID: <210905f16303e9ce7ae3845e252bc07e288f70c1.1575494618.git.liu.denton@gmail.com> (raw)
In-Reply-To: <cover.1575494617.git.liu.denton@gmail.com>

With `format.useAutoBase = true`, running rebase resulted in an
error:

	fatal: failed to get upstream, if you want to record base commit automatically,
	please use git branch --set-upstream-to to track a remote branch.
	Or you could specify base commit by --base=<base-commit-id> manually
	error:
	git encountered an error while preparing the patches to replay
	these revisions:

	    ede2467cdedc63784887b587a61c36b7850ebfac..d8f581194799ae29bf5fa72a98cbae98a1198b12

	As a result, git cannot rebase them.

Fix this by always passing `--no-base` to format-patch from rebase so
that the effect of `format.useAutoBase` is negated.

Reported-by: Christian Biesinger <cbiesinger@google.com>
Signed-off-by: Denton Liu <liu.denton@gmail.com>
---
 builtin/rebase.c  | 3 ++-
 t/t3400-rebase.sh | 2 +-
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/builtin/rebase.c b/builtin/rebase.c
index e755087b0f..51980ab63d 100644
--- a/builtin/rebase.c
+++ b/builtin/rebase.c
@@ -1012,7 +1012,8 @@ static int run_am(struct rebase_options *opts)
 	argv_array_pushl(&format_patch.args, "format-patch", "-k", "--stdout",
 			 "--full-index", "--cherry-pick", "--right-only",
 			 "--src-prefix=a/", "--dst-prefix=b/", "--no-renames",
-			 "--no-cover-letter", "--pretty=mboxrd", "--topo-order", NULL);
+			 "--no-cover-letter", "--pretty=mboxrd", "--topo-order",
+			 "--no-base", NULL);
 	if (opts->git_format_patch_opt.len)
 		argv_array_split(&format_patch.args,
 				 opts->git_format_patch_opt.buf);
diff --git a/t/t3400-rebase.sh b/t/t3400-rebase.sh
index ca99e8c6c4..1323f30fee 100755
--- a/t/t3400-rebase.sh
+++ b/t/t3400-rebase.sh
@@ -159,7 +159,7 @@ test_expect_success 'fail when upstream arg is missing and not configured' '
 	test_must_fail git rebase
 '
 
-test_expect_failure 'rebase works with format.useAutoBase' '
+test_expect_success 'rebase works with format.useAutoBase' '
 	test_config format.useAutoBase true &&
 	git checkout topic &&
 	git rebase master
-- 
2.24.0.578.g4820254054

