[PATCH] rebase -i: remember merge options beyond continue actions

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From: Fabian Ruch <bafain@xxxxxxxxx>

If the user specifies a merge strategy or strategy options in
"rebase --interactive", also use these in subsequent calls of
"rebase --continue".

In the implementation, the "do_merge" guard to check for a given
merge strategy or strategy options is implied by passing these
options, but not stored.  This prevents subsequent calls of
"rebase --continue" to use this setting again later.  Remove this
"do_merge" guard to allow a later usage.

Reported-by: Diogo de Campos <campos@xxxxxxxxxxx>
Signed-off-by: Fabian Ruch <bafain@xxxxxxxxx>
Helped-by: Michael Haggerty <mhagger@xxxxxxxxxxxx>
Signed-off-by: Ralf Thielow <ralf.thielow@xxxxxxxxx>
---
I've been applying the original patch for a long time to my tree,
as it helps me to resolve conflicts e.g. when rebasing .po files.
I also think it's a reasonable change for git-rebase.

I've rebased it agains the current master and rewrote the
commit message to try to make this change technically a bit more
easy to understand.

Original patch submit:
http://thread.gmane.org/gmane.comp.version-control.git/251147/

 git-rebase--interactive.sh    | 18 +++++++-----------
 t/t3404-rebase-interactive.sh | 16 ++++++++++++++++
 2 files changed, 23 insertions(+), 11 deletions(-)

diff --git a/git-rebase--interactive.sh b/git-rebase--interactive.sh
index b938a6d..c0cfe88 100644
--- a/git-rebase--interactive.sh
+++ b/git-rebase--interactive.sh
@@ -81,17 +81,13 @@ rewritten_pending="$state_dir"/rewritten-pending
 # and leaves CR at the end instead.
 cr=$(printf "\015")
 
-strategy_args=
-if test -n "$do_merge"
-then
-	strategy_args=${strategy:+--strategy=$strategy}
-	eval '
-		for strategy_opt in '"$strategy_opts"'
-		do
-			strategy_args="$strategy_args -X$(git rev-parse --sq-quote "${strategy_opt#--}")"
-		done
-	'
-fi
+strategy_args=${strategy:+--strategy=$strategy}
+eval '
+	for strategy_opt in '"$strategy_opts"'
+	do
+		strategy_args="$strategy_args -X$(git rev-parse --sq-quote "${strategy_opt#--}")"
+	done
+'
 
 GIT_CHERRY_PICK_HELP="$resolvemsg"
 export GIT_CHERRY_PICK_HELP
diff --git a/t/t3404-rebase-interactive.sh b/t/t3404-rebase-interactive.sh
index 98eb49a..9a2461c 100755
--- a/t/t3404-rebase-interactive.sh
+++ b/t/t3404-rebase-interactive.sh
@@ -1006,6 +1006,22 @@ test_expect_success 'rebase -i with --strategy and -X' '
 	test $(cat file1) = Z
 '
 
+test_expect_success 'interrupted rebase -i with --strategy and -X' '
+	git checkout -b conflict-merge-use-theirs-interrupted conflict-branch &&
+	git reset --hard HEAD^ &&
+	>breakpoint &&
+	git add breakpoint &&
+	git commit -m "breakpoint for interactive mode" &&
+	echo five >conflict &&
+	echo Z >file1 &&
+	git commit -a -m "one file conflict" &&
+	set_fake_editor &&
+	FAKE_LINES="edit 1 2" git rebase -i --strategy=recursive -Xours conflict-branch &&
+	git rebase --continue &&
+	test $(git show conflict-branch:conflict) = $(cat conflict) &&
+	test $(cat file1) = Z
+'
+
 test_expect_success 'rebase -i error on commits with \ in message' '
 	current_head=$(git rev-parse HEAD) &&
 	test_when_finished "git rebase --abort; git reset --hard $current_head; rm -f error" &&
-- 
2.7.0.rc0.174.g1b62464

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