rebase -i: move help to end of todo file

[PATCH] rebase -i: move help to end of todo file

Many editors start in the first line, so the 9-line help text was an
annoyance.  So move it to the end.

Requested by Junio.

While at it, add a hint how to abort the rebase.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

git-rebase--interactive.sh

@@ -485,21 +485,23 @@ do
 		SHORTUPSTREAM=$(git rev-parse --short $UPSTREAM)
 		SHORTHEAD=$(git rev-parse --short $HEAD)
 		SHORTONTO=$(git rev-parse --short $ONTO)
-		cat > "$TODO" << EOF
-# Rebasing $SHORTUPSTREAM..$SHORTHEAD onto $SHORTONTO
+		git rev-list $MERGES_OPTION --pretty=oneline --abbrev-commit \
+			--abbrev=7 --reverse --left-right --cherry-pick \
+			$UPSTREAM...$HEAD | \
+			sed -n "s/^>/pick /p" > "$TODO"
+		cat >> "$TODO" << EOF
+
+# Rebase $SHORTUPSTREAM..$SHORTHEAD onto $SHORTONTO
 #
 # Commands:
 #  pick = use commit
 #  edit = use commit, but stop for amending
 #  squash = use commit, but meld into previous commit
 #
 # If you remove a line here THAT COMMIT WILL BE LOST.
+# However, if you remove everything, the rebase will be aborted.
 #
 EOF
-		git rev-list $MERGES_OPTION --pretty=oneline --abbrev-commit \
-			--abbrev=7 --reverse --left-right --cherry-pick \
-			$UPSTREAM...$HEAD | \
-			sed -n "s/^>/pick /p" >> "$TODO"
 
 		has_action "$TODO" ||
 			die_abort "Nothing to do"

t/t3404-rebase-interactive.sh

@@ -149,7 +149,8 @@ test_expect_success 'stop on conflicting pick' '
 	diff -u expect .git/.dotest-merge/patch &&
 	diff -u expect2 file1 &&
 	test 4 = $(grep -v "^#" < .git/.dotest-merge/done | wc -l) &&
-	test 0 = $(grep -v "^#" < .git/.dotest-merge/git-rebase-todo | wc -l)
+	test 0 = $(grep -ve "^#" -e "^$" < .git/.dotest-merge/git-rebase-todo |
+		wc -l)
 '
 
 test_expect_success 'abort' '