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From: "Elijah Newren via GitGitGadget" <gitgitgadget@gmail.com>
To: git@vger.kernel.org
Cc: "Alex Henrie" <alexhenrie24@gmail.com>,
	"Son Luong Ngoc" <sluongng@gmail.com>,
	"Matthias Baumgarten" <matthias.baumgarten@aixigo.com>,
	"Eric Sunshine" <sunshine@sunshineco.com>,
	"Ævar Arnfjörð Bjarmason" <avarab@gmail.com>,
	"Elijah Newren" <newren@gmail.com>,
	"Elijah Newren" <newren@gmail.com>
Subject: [PATCH 5/9] pull: ensure --rebase overrides ability to ff
Date: Sat, 17 Jul 2021 15:41:43 +0000	[thread overview]
Message-ID: <3d9ff69198e5a604b124bf861df4d6ecf6eb661e.1626536508.git.gitgitgadget@gmail.com> (raw)
In-Reply-To: <pull.1049.git.git.1626536507.gitgitgadget@gmail.com>

From: Elijah Newren <newren@gmail.com>

Now that the handling of fast-forward-only in combination with rebases
has been moved before the merge-vs-rebase logic, we have an unnecessary
special fast-forward case left within the rebase logic.  Actually, more
than unnecessary, it's actually a violation of the rules.  As per
https://lore.kernel.org/git/xmqqwnpqot4m.fsf@gitster.g/, --rebase is
supposed to override all ff flags other than an explicit --ff-only.
Ensure that it does so by removing the fast-forward special case that
exists within the rebase logic.

Signed-off-by: Elijah Newren <newren@gmail.com>
---
 builtin/pull.c  | 8 +-------
 t/t5520-pull.sh | 6 +++---
 2 files changed, 4 insertions(+), 10 deletions(-)

diff --git a/builtin/pull.c b/builtin/pull.c
index 5c9cbea37c9..5ba376a7487 100644
--- a/builtin/pull.c
+++ b/builtin/pull.c
@@ -1070,13 +1070,7 @@ int cmd_pull(int argc, const char **argv, const char *prefix)
 		    submodule_touches_in_range(the_repository, &upstream, &curr_head))
 			die(_("cannot rebase with locally recorded submodule modifications"));
 
-		if (can_ff) {
-			/* we can fast-forward this without invoking rebase */
-			opt_ff = "--ff-only";
-			ret = run_merge();
-		} else {
-			ret = run_rebase(&newbase, &upstream);
-		}
+		ret = run_rebase(&newbase, &upstream);
 
 		if (!ret && (recurse_submodules == RECURSE_SUBMODULES_ON ||
 			     recurse_submodules == RECURSE_SUBMODULES_ON_DEMAND))
diff --git a/t/t5520-pull.sh b/t/t5520-pull.sh
index e2c0c510222..4b50488141f 100755
--- a/t/t5520-pull.sh
+++ b/t/t5520-pull.sh
@@ -295,7 +295,7 @@ test_expect_success '--rebase (merge) fast forward' '
 	# The above only validates the result.  Did we actually bypass rebase?
 	git reflog -1 >reflog.actual &&
 	sed "s/^[0-9a-f][0-9a-f]*/OBJID/" reflog.actual >reflog.fuzzy &&
-	echo "OBJID HEAD@{0}: pull --rebase . ff: Fast-forward" >reflog.expected &&
+	echo "OBJID HEAD@{0}: pull --rebase . ff (finish): returning to refs/heads/to-rebase" >reflog.expected &&
 	test_cmp reflog.expected reflog.fuzzy
 '
 
@@ -307,8 +307,8 @@ test_expect_success '--rebase (am) fast forward' '
 
 	# The above only validates the result.  Did we actually bypass rebase?
 	git reflog -1 >reflog.actual &&
-	sed "s/^[0-9a-f][0-9a-f]*/OBJID/" reflog.actual >reflog.fuzzy &&
-	echo "OBJID HEAD@{0}: pull --rebase . ff: Fast-forward" >reflog.expected &&
+	sed -e "s/^[0-9a-f][0-9a-f]*/OBJID/" -e "s/[0-9a-f][0-9a-f]*$/OBJID/" reflog.actual >reflog.fuzzy &&
+	echo "OBJID HEAD@{0}: rebase finished: refs/heads/to-rebase onto OBJID" >reflog.expected &&
 	test_cmp reflog.expected reflog.fuzzy
 '
 
-- 
gitgitgadget


  parent reply	other threads:[~2021-07-17 15:42 UTC|newest]

Thread overview: 59+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-17 15:41 [PATCH 0/9] Handle pull option precedence Elijah Newren via GitGitGadget
2021-07-17 15:41 ` [PATCH 1/9] t7601: add relative precedence tests for merge and rebase flags/options Elijah Newren via GitGitGadget
2021-07-17 18:03   ` Felipe Contreras
2021-07-19 18:23   ` Junio C Hamano
2021-07-20 17:10     ` Elijah Newren
2021-07-20 18:22       ` Junio C Hamano
2021-07-20 20:29     ` Felipe Contreras
2021-07-17 15:41 ` [PATCH 2/9] t7601: add tests of interactions with multiple merge heads and config Elijah Newren via GitGitGadget
2021-07-17 18:04   ` Felipe Contreras
2021-07-20 23:11   ` Junio C Hamano
2021-07-21  0:45     ` Elijah Newren
2021-07-17 15:41 ` [PATCH 3/9] pull: abort if --ff-only is given and fast-forwarding is impossible Alex Henrie via GitGitGadget
2021-07-17 18:14   ` Felipe Contreras
2021-07-17 15:41 ` [PATCH 4/9] pull: since --ff-only overrides, handle it first Elijah Newren via GitGitGadget
2021-07-17 18:22   ` Felipe Contreras
2021-07-17 15:41 ` Elijah Newren via GitGitGadget [this message]
2021-07-17 18:25   ` [PATCH 5/9] pull: ensure --rebase overrides ability to ff Felipe Contreras
2021-07-20 23:35   ` Junio C Hamano
2021-07-21  0:14     ` Elijah Newren
2021-07-17 15:41 ` [PATCH 6/9] pull: make --rebase and --no-rebase override pull.ff=only Elijah Newren via GitGitGadget
2021-07-17 18:28   ` Felipe Contreras
2021-07-20 23:53   ` Junio C Hamano
2021-07-21  0:09     ` Felipe Contreras
2021-07-17 15:41 ` [PATCH 7/9] pull: abort by default when fast-forwarding is not possible Elijah Newren via GitGitGadget
2021-07-17 18:31   ` Felipe Contreras
2021-07-17 15:41 ` [PATCH 8/9] pull: update docs & code for option compatibility with rebasing Elijah Newren via GitGitGadget
2021-07-21  0:17   ` Junio C Hamano
2021-07-21  0:44     ` Elijah Newren
2021-07-21  1:25       ` Junio C Hamano
2021-07-17 15:41 ` [PATCH 9/9] pull: fix handling of multiple heads Elijah Newren via GitGitGadget
2021-07-17 18:39 ` [PATCH 0/9] Handle pull option precedence Felipe Contreras
2021-07-21  1:42 ` [PATCH v2 0/8] " Elijah Newren via GitGitGadget
2021-07-21  1:42   ` [PATCH v2 1/8] t7601: test interaction of merge/rebase/fast-forward flags and options Elijah Newren via GitGitGadget
2021-07-21 12:24     ` Felipe Contreras
2021-07-21  1:42   ` [PATCH v2 2/8] t7601: add tests of interactions with multiple merge heads and config Elijah Newren via GitGitGadget
2021-07-21  1:42   ` [PATCH v2 3/8] pull: abort if --ff-only is given and fast-forwarding is impossible Alex Henrie via GitGitGadget
2021-07-21 12:25     ` Felipe Contreras
2021-07-21  1:42   ` [PATCH v2 4/8] pull: since --ff-only overrides, handle it first Elijah Newren via GitGitGadget
2021-07-21 19:18     ` Matthias Baumgarten
2021-07-21 21:18       ` Felipe Contreras
2021-07-21 20:18     ` Junio C Hamano
2021-07-22  3:42       ` Elijah Newren
2021-07-21  1:42   ` [PATCH v2 5/8] pull: make --rebase and --no-rebase override pull.ff=only Elijah Newren via GitGitGadget
2021-07-21 12:26     ` Felipe Contreras
2021-07-21  1:42   ` [PATCH v2 6/8] pull: abort by default when fast-forwarding is not possible Elijah Newren via GitGitGadget
2021-07-21 12:27     ` Felipe Contreras
2021-07-21  1:42   ` [PATCH v2 7/8] pull: update docs & code for option compatibility with rebasing Elijah Newren via GitGitGadget
2021-07-21  1:42   ` [PATCH v2 8/8] pull: fix handling of multiple heads Elijah Newren via GitGitGadget
2021-07-21 12:15   ` [PATCH v2 0/8] Handle pull option precedence Felipe Contreras
2021-07-22  5:04   ` [PATCH v3 " Elijah Newren via GitGitGadget
2021-07-22  5:04     ` [PATCH v3 1/8] t7601: test interaction of merge/rebase/fast-forward flags and options Elijah Newren via GitGitGadget
2021-07-22  5:04     ` [PATCH v3 2/8] t7601: add tests of interactions with multiple merge heads and config Elijah Newren via GitGitGadget
2021-07-22  5:04     ` [PATCH v3 3/8] pull: abort if --ff-only is given and fast-forwarding is impossible Alex Henrie via GitGitGadget
2021-07-22  5:04     ` [PATCH v3 4/8] pull: since --ff-only overrides, handle it first Elijah Newren via GitGitGadget
2021-07-22  5:04     ` [PATCH v3 5/8] pull: make --rebase and --no-rebase override pull.ff=only Elijah Newren via GitGitGadget
2021-07-22  5:04     ` [PATCH v3 6/8] pull: abort by default when fast-forwarding is not possible Elijah Newren via GitGitGadget
2021-07-22  5:04     ` [PATCH v3 7/8] pull: update docs & code for option compatibility with rebasing Elijah Newren via GitGitGadget
2021-07-22  5:04     ` [PATCH v3 8/8] pull: fix handling of multiple heads Elijah Newren via GitGitGadget
2021-07-22  7:09     ` [PATCH v3 0/8] Handle pull option precedence Felipe Contreras

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