Merge branch 'es/rebase-i-count-todo' into maint

"git rebase -i" recently started to include the number of
commits in the insn sheet to be processed, but on a platform
that prepends leading whitespaces to "wc -l" output, the numbers
are shown with extra whitespaces that aren't necessary.

* es/rebase-i-count-todo:
  rebase-interactive: re-word "item count" comment
  rebase-interactive: suppress whitespace preceding item count

git-rebase--interactive.sh

@@ -1030,10 +1030,11 @@ test -n "$autosquash" && rearrange_squash "$todo"
 test -n "$cmd" && add_exec_commands "$todo"
 
 todocount=$(git stripspace --strip-comments <"$todo" | wc -l)
+todocount=${todocount##* }
 
 cat >>"$todo" <<EOF
 
-$comment_char Rebase $shortrevisions onto $shortonto ($todocount TODO item(s))
+$comment_char Rebase $shortrevisions onto $shortonto ($todocount command(s))
 EOF
 append_todo_help
 git stripspace --comment-lines >>"$todo" <<\EOF

t/t3404-rebase-interactive.sh

@@ -1046,4 +1046,13 @@ test_expect_success 'respect core.abbrev' '
 	test 4 = $(grep -c "pick [0-9a-f]\{12,\}" todo-list)
 '
 
+test_expect_success 'todo count' '
+	write_script dump-raw.sh <<-\EOF &&
+		cat "$1"
+	EOF
+	test_set_editor "$(pwd)/dump-raw.sh" &&
+	git rebase -i HEAD~4 >actual &&
+	grep "^# Rebase ..* onto ..* ([0-9]" actual
+'
+
 test_done