rebase -i: commit when continuing after "edit"

When doing an "edit" on a commit, editing and git-adding some files,
"git rebase -i" complained about a missing "author-script".  The idea was
that the user would call "git commit --amend" herself.

But we can be nice and do that for the user.

Noticed by Dmitry Potapov.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/t/t3404-rebase-interactive.sh b/t/t3404-rebase-interactive.sh
index 718c9c1..1af73a4 100755
--- a/t/t3404-rebase-interactive.sh
+++ b/t/t3404-rebase-interactive.sh
@@ -80,7 +80,7 @@
 action=pick
 for line in $FAKE_LINES; do
 	case $line in
-	squash)
+	squash|edit)
 		action="$line";;
 	*)
 		echo sed -n "${line}s/^pick/$action/p"
@@ -297,4 +297,16 @@
 	test $HEAD = $(git rev-parse HEAD^)
 '
 
+test_expect_success '--continue tries to commit, even for "edit"' '
+	parent=$(git rev-parse HEAD^) &&
+	test_tick &&
+	FAKE_LINES="edit 1" git rebase -i HEAD^ &&
+	echo edited > file7 &&
+	git add file7 &&
+	FAKE_COMMIT_MESSAGE="chouette!" git rebase --continue &&
+	test edited = $(git show HEAD:file7) &&
+	git show HEAD | grep chouette &&
+	test $parent = $(git rev-parse HEAD^)
+'
+
 test_done