If the user explicitly specified a merge strategy or strategy options,
"rebase --interactive" started using the default merge strategy again
after "rebase --continue".

This problem gets fixed by this commit. Add test.

Since the "rebase" options "-s" and "-X" imply "--merge", we can simply
remove the "do_merge" guard in the interactive mode and always compile
the "cherry-pick" arguments from the "rebase" state variables "strategy"
and "strategy_opts".
---
 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 6ec9d3c..817c933 100644
--- a/git-rebase--interactive.sh
+++ b/git-rebase--interactive.sh
@@ -77,17 +77,13 @@ amend="$state_dir"/amend
 rewritten_list="$state_dir"/rewritten-list
 rewritten_pending="$state_dir"/rewritten-pending
 
-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 c0023a5..73849f1 100755
--- a/t/t3404-rebase-interactive.sh
+++ b/t/t3404-rebase-interactive.sh
@@ -998,6 +998,22 @@ 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" &&
-- 
2.0.0

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