diff --git a/t/t3404-rebase-interactive.sh b/t/t3404-rebase-interactive.sh
index 3532c482fc..197914bbd8 100755
--- a/t/t3404-rebase-interactive.sh
+++ b/t/t3404-rebase-interactive.sh
@@ -1281,4 +1281,12 @@ test_expect_success 'editor saves as CR/LF' '
 	)
 '
 
+SQ="'"
+test_expect_success 'rebase -i --gpg-sign=<key-id>' '
+	set_fake_editor &&
+	FAKE_LINES="edit 1" git rebase -i --gpg-sign="\"S I Gner\"" HEAD^ \
+		>out 2>err &&
+	grep "$SQ-S\"S I Gner\"$SQ" err
+'
+
 test_done
diff --git a/t/t3415-rebase-autosquash.sh b/t/t3415-rebase-autosquash.sh
index 8f53e54ce4..48346f1cc0 100755
--- a/t/t3415-rebase-autosquash.sh
+++ b/t/t3415-rebase-autosquash.sh
@@ -271,4 +271,37 @@ test_expect_success 'autosquash with custom inst format' '
 	test 2 = $(git cat-file commit HEAD^ | grep squash | wc -l)
 '
 
+set_backup_editor () {
+	write_script backup-editor.sh <<-\EOF
+	cp "$1" .git/backup-"$(basename "$1")"
+	EOF
+	test_set_editor "$PWD/backup-editor.sh"
+}
+
+test_expect_failure 'autosquash with multiple empty patches' '
+	test_tick &&
+	git commit --allow-empty -m "empty" &&
+	test_tick &&
+	git commit --allow-empty -m "empty2" &&
+	test_tick &&
+	>fixup &&
+	git add fixup &&
+	git commit --fixup HEAD^^ &&
+	(
+		set_backup_editor &&
+		GIT_USE_REBASE_HELPER=false \
+		git rebase -i --force-rebase --autosquash HEAD~4 &&
+		grep empty2 .git/backup-git-rebase-todo
+	)
+'
+
+test_expect_success 'extra spaces after fixup!' '
+	base=$(git rev-parse HEAD) &&
+	test_commit to-fixup &&
+	git commit --allow-empty -m "fixup!  to-fixup" &&
+	git rebase -i --autosquash --keep-empty HEAD~2 &&
+	parent=$(git rev-parse HEAD^) &&
+	test $base = $parent
+'
+
 test_done