diff -r a659ccd1888d -r ddbd9744a3d5 src/jdk.internal.le/share/classes/jdk/internal/jline/console/completer/NullCompleter.java
--- a/src/jdk.internal.le/share/classes/jdk/internal/jline/console/completer/NullCompleter.java	Tue Dec 11 11:45:43 2018 +0530
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,28 +0,0 @@
-/*
- * Copyright (c) 2002-2016, the original author or authors.
- *
- * This software is distributable under the BSD license. See the terms of the
- * BSD license in the documentation provided with this software.
- *
- * http://www.opensource.org/licenses/bsd-license.php
- */
-package jdk.internal.jline.console.completer;
-
-import java.util.List;
-
-/**
- * Null completer.
- *
- * @author <a href="mailto:mwp1@cornell.edu">Marc Prud'hommeaux</a>
- * @author <a href="mailto:jason@planet57.com">Jason Dillon</a>
- * @since 2.3
- */
-public final class NullCompleter
-    implements Completer
-{
-    public static final NullCompleter INSTANCE = new NullCompleter();
-
-    public int complete(final String buffer, final int cursor, final List<CharSequence> candidates) {
-        return -1;
-    }
-}